Three-way valve structure

Abstract

The utility model relates to the technical field of three-way valves, and discloses a three-way valve structure which comprises a shell 1 and a valve element 2, a ventilation structure is arranged in the shell 1 and the valve element 2, the ventilation structure comprises an air inlet 3, a first air outlet 4, a second air outlet 5, a first through hole 6 and a second through hole 7, the air inlet 3 is formed in one end of the shell 1, and the first air outlet 4 is formed in the other end of the shell 1. A first air outlet 4 and a second air outlet 5 are formed in the other end of the shell 1, and a first through hole 6 and a second through hole 7 are machined in the valve element 2. According to the three-way valve structure, the air flow direction can be rapidly switched, and the output pressure adjustment and air flow oscillation functions can be achieved by controlling the position of the valve; the oscillation frequency and amplitude can be controlled according to requirements; through the combination of the valves, air can be fed through the same air inlet, and therefore pipeline pollution is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to three -way valve technical field, concretely is a three -way valve structure. BACKGROUND

[0002] There are many noninvasive sputum machines based on MI-E technology on the market, and the technical principle is to first introduce positive pressure into the airway, and then quickly switch to negative pressure to generate shear force on the sputum in the trachea, thereby assisting patients without coughing ability to expel sputum. In recent years, high-frequency oscillation function has also been added to noninvasive sputum machines. This function helps to loosen sputum and improve treatment effect by oscillating airflow when air is supplied to the patient's body.

[0003] However, most of the switching structures on the market are based on electromagnetic valve principle, which can only control the switch and cannot finely adjust the output pressure. The control pressure can only be adjusted by adjusting the fan speed. When the positive and negative pressures are inconsistent, the adjustment speed is slow, the pressure cannot quickly reach the target pressure when switching between positive and negative pressures, and the treatment effect is not good.

[0004] The realization of the oscillation function mainly uses a combination of a stepper motor and a servo motor to control the valve to bleed air. This structure opens a hole on the output pipeline and installs two ball valve structures. The first valve is controlled by the rotation of the stepper motor. During treatment, the stepper motor rotates according to the set oscillation frequency to control the output pipeline to open and close regularly, thereby producing an oscillation effect. The second valve is connected to the servo motor. This valve controls the opening that connects to the atmosphere to achieve the effect of controlling the oscillation amplitude. This structure is complex, requires the use of multiple control devices in series, and completely relies on passive control of oscillation, which is slow in response. The pressure oscillation at the patient end is not strong, and since it is directly connected to the atmosphere, air is sucked into the device without being filtered by the filter cotton when the pipeline is under negative pressure, which can cause pipeline contamination and even the entry of foreign matter to damage the valve or fan. CONTENT OF THE UTILITY MODEL

[0005] To solve the technical problems of the existing ball valve structure, which is complex, requires the use of multiple control devices in series, and completely relies on passive control of oscillation, which is slow in response, the pressure oscillation at the patient end is not strong, and since it is directly connected to the atmosphere, air is sucked into the device without being filtered by the filter cotton when the pipeline is under negative pressure, which can cause pipeline contamination and even the entry of foreign matter to damage the valve or fan, the utility model provides a three-way valve structure.

[0006] The utility model adopts the following technical scheme to realize: a three-way valve structure, including casing and valve core, the inside of casing and valve core is provided with ventilation structure, the ventilation structure includes air inlet, first gas outlet, second gas outlet, first through hole and second through hole, the one end of casing is provided with air inlet, the other end of casing is provided with first gas outlet and second gas outlet, the inside of valve core is processed with first through hole and second through hole;

[0007] Wherein, the shell includes shell a, shell b and shell c, the valve core includes valve core a, valve core b and valve core c, the air inlet includes air inlet a, air inlet b and air inlet c, the first air outlet includes first air outlet a, first air outlet b and first air outlet c, the second air outlet includes second air outlet a and second air outlet c, the first through hole includes first through hole a, first through hole b and first through hole c, the second through hole includes second through hole a, second through hole b and second through hole c.

[0008] Preferably, when the valve core a is located at the inside one end of shell a, the first air outlet a is communicated with the air inlet a through the first through hole a, and the valve core a blocks the top of the second air outlet a; when the valve core a is located at the inside middle end of shell a, the first air outlet a is communicated with the air inlet a through the first through hole a, and the second air outlet a is communicated with the air inlet a through the second through hole a; when the valve core a is located at the inside other end of shell a, the second air outlet a is communicated with the air inlet a through the second through hole a, and the valve core a blocks the top of the first air outlet a.

[0009] Preferably, when the shell b is located at the inside one end of valve core b, the first through hole b is communicated with the air inlet b through the first air outlet b, and the shell b blocks the inside of the second through hole b; when the first air outlet b is located between the first through hole b and the second through hole b, the first through hole b is communicated with the air inlet b through the first air outlet b, and the second through hole b is communicated with the air inlet b through the first air outlet b; when the shell b moves downward, the second through hole b is communicated with the air inlet b through the first air outlet b, and the shell b blocks the inside of the first through hole b.

[0010] Preferably, when the shell c rotates to make the first through hole c communicated with the first air outlet c, the valve core c blocks the bottom of the second air outlet c; when the shell c rotates to make the first air outlet c and the second air outlet c located between the first through hole c and the second through hole c, the first through hole c is communicated with the air inlet c through the first air outlet c, and the second through hole c is communicated with the air inlet c through the second air outlet c; when the shell c rotates to make the second through hole c communicated with the second air outlet c, the valve core c blocks the bottom of the first air outlet c.

[0011] Compared with the prior art, the utility model has the advantages of:

[0012] The utility model discloses a three -way valve structure can realize the quick switching of airflow direction to can realize output pressure regulation and airflow oscillation function through the position of control valve, can also control oscillation frequency, amplitude according to the demand, can realize the air admission of using same air inlet through the combination of valve, thereby avoiding pipeline pollution. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the schematic diagram of principle of the utility model;

[0014] Figure 2 It is the schematic diagram of the communication structure of air inlet a and first through hole a of the utility model;

[0015] Figure 3 It is the schematic diagram of the communication structure of air inlet a and first through hole a of the utility model respectively and first air outlet a, second air outlet a;

[0016] Figure 4 It is the schematic diagram of the communication structure of air inlet a and first through hole a of the utility model respectively and first air outlet a, second air outlet a;

[0017] Figure 5 It is the schematic diagram of the communication structure of air inlet b and first through hole b of the utility model;

[0018] Figure 6 It is the schematic diagram of the communication structure of air inlet b and first through hole b of the utility model respectively and first through hole b, second through hole b;

[0019] Figure 7 It is the schematic diagram of the communication structure of air inlet b and first through hole b of the utility model respectively and first through hole b, second through hole b;

[0020] Figure 8 It is the schematic diagram of the communication structure of air inlet c and first air outlet c of the utility model;

[0021] Figure 9 It is the schematic diagram of the communication structure of air inlet c and first air outlet c of the utility model respectively and first air outlet c, second air outlet c;

[0022] Figure 10 It is the schematic diagram of the communication structure of air inlet c and first air outlet c of the utility model respectively and first air outlet c, second air outlet c;

[0023] Figure 11 It is the schematic diagram of the application principle of the utility model.

[0024] In the drawing:

[0025] 1, shell;101, shell a;102, shell b;103, shell c;

[0026] 2, valve core;201, valve core a;202, valve core b;203, valve core c;

[0027] 3, air inlet; 301, air inlet a; 302, air inlet b; 303, air inlet c;

[0028] 4, first air outlet; 401, first air outlet a; 402, first air outlet b; 403, first air outlet c;

[0029] 5, second air outlet; 501, second air outlet a; 503, second air outlet c;

[0030] 6, first through hole; 601, first through hole a; 602, first through hole b; 603, first through hole c;

[0031] 7, second through hole; 701, second through hole a; 702, second through hole b; 703, second through hole c. DETAILED DESCRIPTION

[0032] Next, the utility model is described further in combination with the drawings and specific embodiments, and it should be noted that the following described embodiments or technical features can be combined to form new embodiments without conflict.

[0033] Embodiment 1: please refer to Figure 1 - Figure 11 The structure of the three-way valve of the embodiment includes a shell 1 and a valve core 2, and the inside of the shell 1 and the valve core 2 is provided with a ventilation structure, which includes an air inlet 3, a first air outlet 4, a second air outlet 5, a first through hole 6 and a second through hole 7, one end of the shell 1 is provided with the air inlet 3, the other end of the shell 1 is provided with the first air outlet 4 and the second air outlet 5, and the inside of the valve core 2 is processed with the first through hole 6 and the second through hole 7;

[0034] Among them, the shell 1 includes shell a 101, shell b 102 and shell c 103, the valve core 2 includes valve core a 201, valve core b 202 and valve core c 203, the air inlet 3 includes air inlet a 301, air inlet b 302 and air inlet c 303, the first air outlet 4 includes first air outlet a 401, first air outlet b 402 and first air outlet c 403, the second air outlet 5 includes second air outlet a 501 and second air outlet c 503, the first through hole 6 includes first through hole a 601, first through hole b 602 and first through hole c 603, and the second through hole 7 includes second through hole a 701, second through hole b 702 and second through hole c 703;

[0035] The device is a three-way valve composed of a housing 1 and a valve core 2, the housing 1 and the valve core 2 contain three passages: an air inlet and two air outlets, the valve core 2 has a certain passage structure, by controlling the position of the valve core 2 to control the size of the air outlet, so that the air of the air inlet can flow out from the designated air outlet through the passage;

[0036] The switch can be adjusted in two directions, and has the following states:

[0037] When the switch is in the middle state, both the first through hole 6 and the second through hole 7 of the valve are opened to a small extent;

[0038] When the switch moves in the direction of opening the first through hole 6, the opening of the first through hole 6 becomes larger, and the opening of the second through hole 7 becomes smaller;

[0039] Continue to move in the direction of opening the first through hole 6, so that the opening of the first through hole 6 becomes larger, and the second through hole 7 is just closed;

[0040] Continue to move in the direction of opening the first through hole 6, so that the opening of the first through hole 6 continues to become larger, and the second through hole 7 remains closed;

[0041] Continue to move in the direction of opening the first through hole 6, the first through hole 6 is completely opened, and the second through hole 7 remains closed;

[0042] Move in the direction of opening the second through hole 7, the situation is the same as the first through hole 6.

[0043] Example 2: Based on example 1, this example introduces the internal structure of the housing a101 and the valve core a201. When the valve core a201 is located at one end of the internal structure of the housing a101, the first air outlet a401 is connected to the air inlet a301 through the first through hole a601, and the valve core a201 blocks the top of the second air outlet a501. When the valve core a201 is located at the middle of the internal structure of the housing a101, the first air outlet a401 is connected to the air inlet a301 through the first through hole a601, and at the same time, the second air outlet a501 is connected to the air inlet a301 through the second through hole a701. When the valve core a201 is located at the other end of the internal structure of the housing a101, the second air outlet a501 is connected to the air inlet a301 through the second through hole a701, and the valve core a201 blocks the top of the first air outlet a401;

[0044] The device consists of a housing a101 and a valve core a201. The upper part is an air inlet a301, and the lower part is a first air outlet a401 and a second air outlet a501. The valve core a201 is a slider with two through holes inside, a first through hole a601 and a second through hole a701, which allow gas to flow in the through holes. The slider can slide inside the housing a101, so that the through hole of the valve core a201 overlaps with the air outlet of the housing a101, thereby controlling the amount of gas passing through the first air outlet a401 and the second air outlet a501.

[0045] The limiting condition of the slider is: when it is at the extreme point on one side of the housing a101, the air outlet near that side is fully open and the air outlet on the other side is fully closed; when it is in the middle position, both air outlets are opened or closed to a small extent.

[0046] When valve core a201 is in such a state Figure 2 At the position shown, the gas enters through the inlet a301 and flows out completely through the first outlet a401 via the first through hole a601.

[0047] like Figure 3 When the valve core a201 is in the middle position, the gas flows out from the first outlet a401 and the second outlet a501.

[0048] like Figure 4 When the valve core a201 is in the right position, the gas enters from the inlet a301, passes through the second through hole a701 and flows out from the second outlet a501.

[0049] When the control valve core a201 is slightly tilted to the left, the second outlet a501 is completely closed and the first outlet a401 is partially opened, thereby controlling a small amount of gas to flow out.

[0050] The opening shape of the housing a101 and the channel shape of the valve core a201 are designed according to actual needs, so as to achieve different flow control requirements.

[0051] Embodiment 3: Based on Embodiment 1, this embodiment introduces the internal structure of the shell b102 and the valve core b202. When the shell b102 is located at the inner end of the valve core b202, the first through hole b602 is connected with the air inlet b302 through the first air outlet b402, and the shell b102 blocks the inner side of the second through hole b702. When the first air outlet b402 is located between the first through hole b602 and the second through hole b702, the first through hole b602 is connected with the air inlet b302 through the first air outlet b402, and at the same time, the second through hole b702 is connected with the air inlet b302 through the first air outlet b402. When the shell b102 moves downward, the second through hole b702 is connected with the air inlet b302 through the first air outlet b402, and the shell b102 blocks the inner side of the first through hole b602.

[0052] The air inlet b302 is located at the bottom of the shell b102, the valve core b202 is vertically through, the valve core b202 is provided with a first through hole b602 and a second through hole b702 on the side surface, the shell b102 is provided with a first air outlet b402 on the side surface, and the shell b102 can slide up and down to control the opening size of the air outlet of the valve core b202.

[0053] As shown in Figure 5 , the shell b102 is located at the top position, the first air outlet b402 is completely opened, the gas enters from the air inlet b302 and flows out from the first through hole b602 through the first air outlet b402.

[0054] As shown in Figure 6 , the shell b102 is in the middle position, and the gas flows out from the first through hole b602 and the second through hole b702.

[0055] As shown in Figure 7 , the shell b102 is in the bottom position, at this time the second through hole b702 is completely opened, the gas enters from the air inlet b302 and flows out from the second through hole b702 through the first air outlet b402.

[0056] When the shell b102 is in the middle position, at this time the first through hole b602 is completely closed, the second through hole b702 is opened by a small part, and further downward can control the opening size of the second through hole b702 to realize the control of the flow size.

[0057] The through hole in the figure is only for the purpose of illustration, and in actual use, different shapes can be designed according to the needs to meet the fine control of the size of the air outlet opening. Embodiment

[0058] Based on the embodiment 1, this embodiment introduces the internal structure of the shell c103 and the valve core c203. When the shell c103 rotates to make the first through hole c603 communicate with the first gas outlet c403, the valve core c203 blocks the bottom of the second gas outlet c503. When the shell c103 rotates to make the first gas outlet c403 and the second gas outlet c503 located between the first through hole c603 and the second through hole c703, the first through hole c603 communicates with the air inlet c303 through the first gas outlet c403, and the second through hole c703 communicates with the air inlet c303 through the second gas outlet c503. When the shell c103 rotates to make the second through hole c703 communicate with the second gas outlet c503, the valve core c203 blocks the bottom of the first gas outlet c403.

[0059] Wherein, the shell c103 is a bowl-shaped cylinder, the upper side has an air inlet c303, the bottom is a first gas outlet c403 and a second gas outlet c503, the valve core c203 is a disc, the upper side has a first through hole c603 and a second through hole c703, the shell c103 can rotate on the top of the valve core c203, thereby controlling the opening degree of the first through hole c603 and the second through hole c703.

[0060] As shown in Figure 8 , the shell c103 rotates to make the first gas outlet c403 completely open, the gas enters from the air inlet c303, and flows out from the first through hole c603 through the first gas outlet c403.

[0061] As shown in Figure 9 , the shell c103 rotates to make the first gas outlet c403 and the second gas outlet c503 located between the first through hole c603 and the second through hole c703, the gas flows out from the first through hole c603 and the second through hole c703.

[0062] As shown in Figure 10 , the shell c103 rotates to make the second through hole c703 completely open, the gas enters from the air inlet c303, and flows out from the second through hole c703 through the first gas outlet c403. Embodiment

[0063] Based on the embodiment 1, the three-way valve structure is applied to the positive and negative pressure switching device in this embodiment, and the position of the valve core 2 can be adjusted to control the pressure quick switching and pressure size control.

[0064] The application device is composed of a fan, two above-mentioned positive and negative pressure switching devices A and B, a power source for controlling the switching device, and a pipeline, and the P end is an output end.

[0065] The position of the A and B valves can be controlled to control the pressure, and the details are as follows:

[0066] In the table:

[0067] The left four columns of valve control part 1 represent complete opening, 0 represents complete closing, and 0.x represents opening to a certain extent;

[0068] The output part Pmax represents the maximum pressure determined by the fan speed, 0 represents that the output pressure is 0, and P represents an adjustable pressure between 0 and Pmax;

[0069] By fixing the position of one valve, the rapid reciprocating motion of the other valve can be controlled to realize the rapid oscillation of the pressure;

[0070] For example

[0071] The A1 valve is completely closed, and the A2 valve is completely opened, at this time the maximum pressure is output, and the state of the switching valve is switched to the A1 valve being completely opened and the A2 valve being completely closed, so that the positive and negative pressure can be rapidly switched;

[0072] The A1 valve is completely opened, and the A2 valve is completely closed, at this time the reciprocating motion of the control valve B can control the rapid change of the pressure in the negative pressure, thereby generating a negative pressure oscillation effect;

[0073] The B1 valve is completely opened, and the B2 valve is completely closed, at this time the reciprocating motion of the control valve B can control the rapid change of the pressure in the positive pressure, thereby generating a positive pressure oscillation effect.

[0074] Working principle: The three-way valve structure can realize the rapid switching of the airflow direction, and can realize the output pressure adjustment and airflow oscillation function by controlling the position of the valve, and can also control the oscillation frequency and amplitude according to the requirements; through the combination of the valves, in addition, the same air inlet can be used for air intake, thereby avoiding pipeline pollution.

[0075] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application, and any non-substantial changes and replacements made by those skilled in the art on the basis of the present application all belong to the scope of protection required by the present application.

Claims

1. A tee valve structure comprising a housing (1) and a valve core (2), characterized in that, The shell (1) and the valve core (2) are internally provided with a ventilation structure, which comprises an air inlet (3), a first air outlet (4), a second air outlet (5), a first through hole (6) and a second through hole (7), one end of the shell (1) is provided with an air inlet (3), the other end of the shell (1) is provided with a first air outlet (4) and a second air outlet (5), and the inside of the valve core (2) is processed with a first through hole (6) and a second through hole (7); Wherein, the shell (1) comprises a shell a (101), a shell b (102) and a shell c (103), the valve core (2) comprises a valve core a (201), a valve core b (202) and a valve core c (203), the air inlet (3) comprises an air inlet a (301), an air inlet b (302) and an air inlet c (303), the first air outlet (4) comprises a first air outlet a (401), a first air outlet b (402) and a first air outlet c (403), the second air outlet (5) comprises a second air outlet a (501) and a second air outlet c (503), the first through hole (6) comprises a first through hole a (601), a first through hole b (602) and a first through hole c (603), and the second through hole (7) comprises a second through hole a (701), a second through hole b (702) and a second through hole c (703).

2. The tee valve structure of claim 1, wherein When the valve core a (201) is located at the inside one end of the shell a (101), the first air outlet a (401) is communicated with the air inlet a (301) through the first through hole a (601), and the valve core a (201) blocks the top of the second air outlet a (501); when the valve core a (201) is located at the inside middle end of the shell a (101), the first air outlet a (401) is communicated with the air inlet a (301) through the first through hole a (601), and the second air outlet a (501) is communicated with the air inlet a (301) through the second through hole a (701); when the valve core a (201) is located at the inside other end of the shell a (101), the second air outlet a (501) is communicated with the air inlet a (301) through the second through hole a (701), and the valve core a (201) blocks the top of the first air outlet a (401).

3. The three-way valve structure according to claim 1, wherein When the shell b (102) is located at the inner end of the valve core b (202), the first through hole b (602) is communicated with the air inlet b (302) through the first air outlet b (402), and the shell b (102) blocks the inner side of the second through hole b (702); when the first air outlet b (402) is located between the first through hole b (602) and the second through hole b (702), the first through hole b (602) is communicated with the air inlet b (302) through the first air outlet b (402), and at the same time, the second through hole b (702) is communicated with the air inlet b (302) through the first air outlet b (402); when the shell b (102) moves downward, the second through hole b (702) is communicated with the air inlet b (302) through the first air outlet b (402), and the shell b (102) blocks the inner side of the first through hole b (602).

4. The three-way valve structure according to claim 1, wherein When the shell c (103) rotates to make the first through hole c (603) communicated with the first air outlet c (403), the valve core c (203) blocks the bottom of the second air outlet c (503); when the shell c (103) rotates to make the first air outlet c (403) and the second air outlet c (503) located between the first through hole c (603) and the second through hole c (703), the first through hole c (603) is communicated with the air inlet c (303) through the first air outlet c (403), and the second through hole c (703) is communicated with the air inlet c (303) through the second air outlet c (503); when the shell c (103) rotates to make the second through hole c (703) communicated with the second air outlet c (503), the valve core c (203) blocks the bottom of the first air outlet c (403).

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