TW201639608A - Quick valve - Google Patents

Abstract

A quick valve comprises a swing member and an angle adjusting member. The swing member can be rotatingly fixed on a valve body, the valve body has a valve port, the swing member can rotate along the direction that clings to or far away from the valve port. The angle adjusting member can cover the valve port, the angle adjusting member is combined with the swing member, and the angle adjusting member can adjust an angle between itself and the valve port. The quick valve is simple in structure, easy to process, high in sealing reliability, quick in switch and with no abrasion during rotation and no pressure loss.

Description

Shutter valve

The present invention relates to a valve, and more particularly to a low pressure loss valve that can be quickly switched.

In medical devices, such as fully automatic coughing machines, there is a need for valves that can be quickly opened and closed with low pressure loss and good sealing.

Patent WO2012042255A1 describes a valve that can be quickly reversing, comprising a sector-shaped rotor and a stator that is concentric with it as a valve body. The rotor has a central air inlet that communicates with the patient's breathing circuit. At the same time, the rotor has a hole in the radial direction to communicate with the central intake hole. The inner cylindrical surface of the stator is distributed with two holes at a certain angle in the circumferential direction, and the two holes on the stator are respectively communicated with the air inlet and the air outlet of the fan. The radial bore of the rotor can be aligned with one of the two holes in the stator, applying a clockwise or counterclockwise torque to the rotor via a rotating electromagnet, rotating the rotor at a fixed angle, and the radial bore of the rotor can be coupled to the stator One of the two holes is aligned. By swinging the rotor to two different positions, the positive pressure port and the negative pressure port of the fan can respectively communicate with the patient's breathing tube, thereby achieving switching between positive pressure ventilation and cough negative pressure ventilation.

The disadvantage of the patent WO2012042255A1 valve is very obvious: 1. The contact surface between the rotor and the stator is a cylindrical surface, and the sealing performance is poor. If the leakage is required, the machining accuracy of the outer cylindrical surface of the rotor and the cylindrical surface of the stator is extremely high, and the processing difficulty is very high. Big. 2. The preload force cannot be applied in the radial direction, and the sealing reliability is difficult to guarantee. 3, to ensure a reliable seal, the outer cylindrical surface of the rotor and the inner cylindrical surface of the stator must have a small gap, which will cause the friction between the rotor and the stator to rotate with each other. On the one hand, the rotational resistance will be large and require more torque. Affects the switching speed. At the same time, the wear and tear between each other is severe, and as the use time is lengthened, the gap will become larger and larger, which directly affects the seal. 4. In order to achieve no leakage between the center hole of the rotor and the center hole of the stator, the end face of the rotor must also be planarly sealed with the end face of the stator, closely fit, and can slide with each other, which further increases the driving of the rotor. Torque, at the same time, leads to greater wear. 5, the valve switching speed is not high, the valve position from partial alignment to full alignment, it takes a long time, the suddenness of the airflow is not enough, and the pressure loss is increased.

The patent US 2012/0285460 A1 likewise describes a structure similar to the patent WO 2012042255 A1, but the patent uses two valves, the first valve for direction switching and the second valve for air flow disturbance. The first valve is substantially identical to the patent WO2012042255A1 and is also a cylindrical rotor and a cylindrical stator. The outer cylindrical surface of the rotor and the inner cylindrical surface of the stator cooperate with each other to rotate, thereby realizing airflow switching. The second valve includes a valve plate similar to a butterfly valve that turbulates airflow through the rotation of the valve plate.

The patent US 2012/0285460 A1 consists of two valves, the first of which has the same disadvantages as the valve of the patent WO 2012042255 A1. The second valve is easy to leak due to the gap between the valve plate and the valve body, so the depth of the disturbance is limited. If the gap between the valve plate and the valve body is reduced, the valve body and the valve plate are cylindrical surfaces, which is difficult to process. At the same time, the frictional resistance is large when disturbed. In addition, the patent US 2012/0285460 A1 uses two rotary drive components to increase the complexity and cost of the device.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a valve which is quick to open, has a small pressure loss, has no bending inside the valve, and has a small leakage. It can be applied to a fully automatic coughing machine to control the coughing airflow during the coughing process of the automatic coughing machine and increase the suddenness of the airflow. Among them, the automatic cough machine is a medical device that can effectively cough patients with mechanical ventilation.

The invention innovatively designs the valve plane sealing self-adjusting structure, which not only can ensure the high frequency of the valve opening, the pipeline has no bending, throttling and pressure loss, and at the same time, the gravity, the spring force and the fluid pressure are applied to the contact plane. To make the sealing effect better.

Specifically, the shutter valve of the present invention includes: a swinging member rotatably fixed to the valve body, the valve body having a valve port, the swinging member being rotatable toward or away from the valve port; and an angle adjusting member, an angle The adjustment member is capable of covering the valve port, and the angle adjustment member is coupled to the swing member, and the angle adjustment member is capable of adjusting an angle of the swing member with respect to the valve port.

Briefly, the shutter valve includes a door panel member that is rotatable about a fixed center of rotation; a valve port that can be attached to the door panel member at an angle to the horizontal plane; the door panel member can be automatically adjusted and valved by its angle adjustment member The mouth fits the precision and improves the sealing. Applying external rotation torque to the door panel component allows the door panel component to swing a certain angle around the fixed center of rotation to complete or disengage the valve port, thereby achieving rapid opening and closing of the shutter valve and airflow disturbance.

The shutter valve of the invention has the advantages of simple structure, easy processing, high sealing reliability, rapid switching, no wear during operation, and zero pressure loss.

The invention is described below with reference to the accompanying drawings in which like parts are designated by the same reference numerals.

The innovative motivation of the present invention stems from the need for a fully automatic synchronized coughing machine. A fully automatic synchronized coughing machine is used in the ICU ward or respiratory department, in conjunction with a ventilator, to automatically remove the respiratory tract sputum from a mechanically ventilated patient by simulating a person's cough. The so-called simulated patient cough is that when the ventilator gives the patient a positive pressure ventilation with sufficient tidal volume, the coughing machine gives the patient a rapid, sudden reverse expiratory flow. The innovative motivation of the present invention will be briefly described below with reference to FIG.

The coughing machine 1, the ventilator 5, and the patient 6 are vented through the balloon valve 4 and associated tubing. Specifically, the coughing machine 1 is connected to the balloon valve 4 through the coughing machine line and the patient through the patient line. The coughing machine and the patient communicate with each other through their respective lines. The ventilator 5 is connected to the balloon valve 4 through a ventilator exhalation line and an inspiratory line. When not coughing, the shutter valve 3 is closed, the balloon valve 4 is open, and the ventilator will mechanically ventilate the patient in a mode set by the physician. The positive pressure gas generated by the ventilator enters the patient 6 through the inspiratory circuit, the balloon valve 4, and the patient line, so that the patient completes an inhalation. After the inhalation is completed, the ventilator 5 will enter an exhalation state. At this time, the gas in the lungs of the patient 6 will pass through the patient line, the balloon valve 4, and the expiratory circuit, and is discharged to the atmosphere through the ventilator. Complete the entire breathing loop.

When the coughing machine 1 is working, in the expiratory phase, the coughing machine 1 closes the balloon valve 4, the shutter valve 3, and the fan 2 in the coughing machine communicates with the patient line through the coughing machine tube, and the gas is in the patient's lung Positive pressure and coughing machine under the negative pressure of the fan, rushing out, resulting in a rapid and sudden airflow, related research proves that when the peak flow of the expiratory flow is greater than 170L / min, it will be able to effectively cough the patient sputum.

The effect of coughing is closely related to the rapid and suddenness of the expiratory flow. At the same time, in order to increase the coughing effect during the coughing process, the shutter valve 3 is required to open and close at a high frequency during coughing to form a disturbing airflow. The frequency of opening and closing is usually above 3 Hz. Also, the shutter valve 3 is directly connected to the ventilator duct. If the shutter valve 3 is slightly leaked, the ventilator 5 and the coughing machine 1 may be falsely alarmed, or the ventilator 5 and the coughing machine 1 may not operate normally. These requirements and characteristics of the coughing machine place high demands on the shutter valve 3:

1. Open quickly: The speed of full opening and complete closing is required to be within 150 milliseconds, and the faster the better, to meet the suddenness of airflow and the need for coughing airflow disturbance.

2. The pressure loss is small: the higher the peak flow rate, the better the cough effect, but the larger the peak flow rate, the greater the pressure loss for the conventional valve. Therefore, how to ensure that the pressure loss is minimized at a high peak flow rate is a challenge.

3. There is no bending in the internal pipeline of the valve: in order to ensure the control reliability and compact structure, the fluid pipeline inside the valve is usually shaped and tortuous, and the circulation diameter of the pipeline changes drastically, which actually buffers the airflow. , reducing the suddenness of the airflow and increasing the pressure loss.

4, the amount of leakage is small: ordinary large-diameter valves are usually slightly leaked, this slight leakage has no substantial impact on the regular use. However, in the pipeline used in combination with the ventilator and cough machine, the consequences of slight leakage may be serious. For example, the breathing curve is messy, coughing cannot be performed, or the ventilator, coughing machine may give a false alarm, and the patient inhales. Gas and exhaled gas tidal volume is inconsistent and so on. According to the actual use, the leakage of this valve should be controlled below 0.2L/min.

Conventional diaphragm valves and piston valves are structurally short, and the flow path of the airflow after opening is a disadvantage of the tortuousness and the sudden thinning of the internal pipe of the valve, which directly causes the suddenness of the airflow to be insufficient after the valve is opened, and the pressure loss is large. At the same time, the rubber diaphragm is easily opened and closed after long-term high frequency, and is easily damaged. The use of conventional electric, magnetic or pneumatic butterfly valves can significantly improve the rapid and sudden airflow, but the butterfly valve and the side wall are rubber elastic deformation seals or metal seals by improving the machining accuracy. This method is always used in processing and assembly. The problem is that leakage is easy to occur during use. At the same time, due to the fast switching frequency of the valve, the frequent contact and extrusion between the rubber and the metal, the metal and the metal quickly wear out, which makes the leakage more serious.

Fig. 2 is a simplified schematic view showing the mechanical structure of the shutter valve of the present invention.

The shutter valve 3 of the present invention includes a swinging member 8 that is rotatably fixed to the valve body 7, and the valve body 7 has a valve port 10. The swinging member 8 is rotatable in a direction approaching or away from the valve port 10. Specifically, as shown in FIG. 2, the swinging member 8 rotates around the valve body 7 and constitutes a cylindrical rotation 埠A with the center of rotation.

The shutter valve 3 further includes an angle adjusting member 9; an angle adjusting member 9 capable of covering the valve port 10; the angle adjusting member 9 is coupled to the swinging member 8, and the angle adjusting member 9 can adjust the angle with respect to the valve port 10 by its own swing. As shown in Fig. 2, the angle adjustment member 9 and the swing member 8 are connected by a rotation 埠B, for example, by a spherical rotation 埠B like a universal joint. By the rotation of the swinging member 8, the plane of the angle adjusting member 9 and the plane in which the valve port 10 is located may be attached to each other or may be separated. The plane of the angle adjusting member 9 and the plane of the valve port 10 constitute a plane sliding 埠C.

As shown in FIG. 2, when a counterclockwise direction torque M1 is applied to the swinging member 8 in the counterclockwise direction along the cylindrical rotation 埠A, the swinging member 8 brings the angle adjusting member 9 into the plane of the valve port 10 to realize the valve. The partition of the channel on the left and right sides of the mouth 10. When a clockwise torque M2 is applied to the swinging member 8 in the clockwise direction along the cylindrical rotation 埠A, the swinging member 8 disengages the angle adjusting member 9 from the valve port 10, so that the passages on the left and right sides of the valve port 10 are opened.

Still further, in order to increase the fitting effect, the angle adjusting member 9 can adjust the angle between the angle adjusting member 9 and the swinging member 8 by rotating the 埠B to achieve a close fit to the valve port 10.

The shutter valve 3 of the present invention has two members: a swinging member 8 and an angle adjusting member 9. There are a total of three low cymbals, no sorghum: a cylindrical rotation 埠A formed by the oscillating member 8 and the valve body 7, a spherical rotation 埠B formed by the oscillating member 8 and the angle adjustment member 9, an angle adjustment mechanism 9 and a valve port 10 (or The plane formed by the valve body 7) slides 埠C. Each member has 3 degrees of freedom, each low limit two degrees of freedom. Therefore, when the valve realizes the blocking function (ie, it is closed), the degree of freedom of the entire shutter valve is: 2 × 3 - 3 × 2 = 0. The degree of freedom of the system is zero, which means that the reliability of the system will not be affected by the installation or machining error of a certain component, and the space can be effectively cut off.

Preferably, the valve port 10 may be circular (as applied to a coughing machine line) and at an angle a between 0 and 90 degrees from the horizontal, most preferably between 40 and 80 degrees, for the purpose of utilizing The self-weight of the swinging member 8 and the angle adjusting member 9 exerts a pre-tightening force between the angle adjusting member 9 and the valve opening 10, thereby further ensuring a better fit. For the calculation of the component force applied to the fitting surface of the valve port 10, refer to the force analysis diagram in FIG. 2, and the force N1 of the valve port 10 can be calculated according to the formula (1):

N1 = G × cosα (1)

The preloading force can also be applied without gravity or by gravity, such as applying a fixed counterclockwise torque M1 to the swinging mechanism 8 (for example, increasing the torsion spring or rotating the driving member can directly output a counterclockwise torque, at this time other Angle 0-40 °, 80-90 ° also has a good effect). At this time, the pressure N2 received by the contact surface of the valve port 10 can be calculated by the formula (2), which is the pressure acting on the center of the door panel after the pressure is synthesized. In the following formula (2), L represents the distance from the door shaft to the center of the door panel:

N2 = M1/L (2)

It should be noted that, in a state in which the angle adjusting member 9 is in contact with the valve port 10, if the pressure in the pipe on the right side of the valve port 10 is smaller than the pressure in the space on the left side of the swinging member 8, due to the pressure difference between the left and right sides, at the angle The adjustment member 9 and the valve port 10 are more closely attached, and the use effect is better. Thus, the need for a fully automatic coughing machine with a low ventilator is required.

Figure 3 shows an exploded view of a preferred embodiment of the door panel element 11 of the oscillating member 8 and the angle adjustment member 9.

The swinging member 8 includes a door panel 12 and a door panel shaft 20 that can be applied with an external rotational torque to drive the door panel 12 to rotate together. The door panel shaft 20 is provided at the top of the door panel 12, and the door panel shaft 20 is cylindrical, and the coupling rod 25 for the rotation driving member 24 (see Fig. 5, which will be described later in detail) is inserted. The door panel shaft 20 has a screw mounting hole 21 for fastening the shaft rod 25 to the door panel shaft 20.

The angle adjustment member 9 includes a joint bearing 13 and an adjustment plate 14. The joint bearing 13 may be made of carbon steel, stainless steel, non-ferrous metal, plastic or other corrosion-resistant material. The outer circumferential surface of the joint bearing 13 is fastened in the door panel 12 by means of glue, screws, interference fit or the like. For example, the door panel 12 may have an annular hole into which the outer cylindrical surface of the joint bearing 13 is fitted, in such a manner as to be embedded in the door panel 12. Alternatively, in order to simplify the structure, without the adhesive, the outer cylindrical surface of the joint bearing 13 can also be made in one piece with the inner cylindrical surface of the door panel 12, i.e., the final structure is a spherical member that rotates inside the door panel 12. However, such improvements do not go beyond the scope of the present invention.

The adjustment plate 14 has a transition plate 15 and a plug-in program 17 provided on the transition plate 15, and the plug-in program 17 can be inserted into the joint bearing 13 and the adjustment plate 14 and the joint bearing 13 can be fastened by the countersunk screws 18. Preferably, the transition plate 15 is in the shape of a disk, and the plug-in program 17 is cylindrical and located in the middle of the transition plate 15.

Figure 4 further shows a perspective view of the adjustment plate 14. The other side of the transition plate 15 (the other side opposite the plug-in program 17) is provided with a flange 23 having a recess 22 for the placement of the gasket 16. The gasket 16 can be fixed to the adjustment plate 14 by the recess 22 and the limit of the transition plate 15. The thickness of the gasket 16 is such that after it is caught in the recess 52, the surface of the gasket 16 is flush with the surface of the flange 23. The material of the gasket 16 may be soft or hard rubber or silicone rubber or other polymeric elastomer in order to achieve a better sealing of the valve port 10.

The inner cylindrical surface of the door panel 12 and the outer cylindrical surface of the joint bearing 13, the inner cylindrical surface of the joint bearing 13 and the outer cylindrical surface of the plug-in program 17 are both shaft holes, and the two tolerances can be selected as clearance fit, transition fit, and interference. A kind of cooperation. In order to prevent loosening, anaerobic type bearing retaining glue or sealant can be applied between the mating surfaces, such as Loctite 648, 680, or mechanically to prevent loosening, such as tightening screws, lock nuts or shaft holes for elasticity. Retaining ring, etc. For example, in this example, in order to prevent the plug-in program 17 from coming out of the inner surface of the joint bearing 13, the countersunk screw 18 passes through the retaining ring 19 and is connected to the threaded hole in the plug-in program 17, and the joint bearing 13 is fastened.

During operation, the joint bearing 13 performs a slight angle adjustment to ensure that the gasket 16 and the valve port 10 can be closely fitted to improve the sealing effect. In the present embodiment, the joint bearing 13 is used to adjust the angle. Of course, it is not limited to the joint bearing, such as a self-aligning ball bearing having a slight rotation angle of the inner and outer rings, a cylindrical or tapered roller bearing. The core of the invention is that the pivoting member 8 and the angle adjusting member 9 are rotatable.

The shutter valve of the present invention requires a drive member to rotate. The shutter valve 3 of the present invention further includes a rotary drive member 24. FIG. 5 shows a perspective view of one embodiment of a rotary drive member 24.

The rotary drive member 24 includes a power member 28 for generating a rotational force and an output shaft 26, the rotational force being output through the output shaft 26 having a recess 27 at the end. The power member 28 may be a single or bidirectional rotating electromagnet, a rotating cylinder, a motor, or the like capable of outputting a rotational motion. In this embodiment, it is a two-way electromagnet.

The rotary drive member 24 further includes a coupling shaft 25 having a flat projection 30 at one end that cooperates with the recess 27 of the output shaft 26 to transmit torque. The structure for transmitting the torque between the coupling shaft 25 and the output shaft 26 is not limited to the above-mentioned connection manner. For example, the output shaft 26 has a flat protrusion at one end, and the end of the shaft rod 25 is a groove, and the two are screw-fastened and splined. The coupling, or the use of a finished coupling, or to simplify the structure, the shaft 25 and the power element output shaft 26 are machined in one piece.

The coupling rod 25 is inserted into the door panel shaft 20 (see Fig. 3) of the swinging member 8, and is fastened by screws through the screw mounting holes 21. The specific mounting method will be described below with reference to FIG. 6.

Figure 6 shows an exploded view of a preferred embodiment of the shutter valve of the present invention. Figure 7 shows a perspective view of the housing element of Figure 6. Figure 8 is a vertical sectional view of the center line of the inlet and outlet ports after the shutter valve shown in Figure 6 is assembled. Figure 9 is a vertical sectional view of the shutter valve embodiment of the present invention along the center line of the coupling shaft, the two figures depict the internal structure of the shutter valve in two dimensions, for the reader to understand the front three-dimensional explosion map combined with the language description The assembly relationship between the components is important. The design principle, structural features and working process of the shutter valve according to the present invention are further explained below with reference to FIGS. 6 to 9.

In this embodiment, the valve body 7 includes a housing member 35 and an outlet end cap 32 that combine to form a closed cavity 44 (see FIG. 9) in which the door panel assembly 11 is mounted. The specific combination may be as follows: the outlet end cap 32 has three sets of fasteners, namely three sets of screws 42 and washers, and the outer casing element 35 has three threaded holes 39, and the screws 42 are screwed into the threaded holes 39 for fastening.

The inside of the outer casing member 35 has a recess 41 in which an O-ring 33 is formed. When the outer casing member 35 is pressed tightly with the outlet end cap 32, the O-ring 33 prevents leakage between the closed cavity 44 and the external environment.

The outer casing member 35 further includes a first sliding bearing 37 and a second sliding bearing 38, and the coupling rod 25 is sequentially inserted into the first sliding bearing 37, the door shaft 20 of the swinging member 8, and the second sliding bearing 38. The screw mounting hole 21 of the door member member 11 is aligned with the screw hole 31 of the coupling rod 25, and is fastened by the countersunk screw 40 through the two screw holes. The implementation is not limited to screws, but may be other components that transmit torque such as pins, keys, clamps, couplings, and the like. The inner cylindrical faces of the first and second sliding bearings 37, 38 are in clearance fit with the outer cylindrical faces of the coupling rods 25 to ensure that the coupling rods 25 are rotatable along the cylindrical surfaces of the first and second portions 37, 38. The first and second plain bearings 37, 38 may be machined from a self-lubricating material such as bronze, graphite, Teflon plastic or other engineering plastics, or may be finished, such as the product of the German company IGUS. More preferably,

The outer casing member 35 further includes a lip seal 36 that prevents the closed cavity 44 from leaking along the gap formed by the coupling shaft 25, the sliding sleeve 37, the output shaft 26, and the power member 28. The implementation is not limited to a lip seal, but may also be a mechanical seal, a packing seal, a magnetic fluid seal, or the like.

The outer casing member 35 further includes a cushioning block 45 disposed on the outlet end cap 32. In the closed cavity 44, the buffering block 45 functions to slow the impact on the valve body 7 when the door panel 12 is opened, and to reduce noise. It is usually used in combination with a rubber having an energy absorbing effect, a ruthenium rubber, a polymeric elastomer, a buffered metal spring, or a spring in combination with a polymeric elastomer.

The outer casing member 35 also includes two sets of screw washers 34 that are coupled to threaded holes 29 (see Fig. 5) on the rotary drive member 24 to secure the rotary drive member 24 to the outer casing member 35. Of course, it is not limited to this connection method, especially the difference in rotating parts, which may result in different connection methods.

As shown in Fig. 9, the valve port 10 on the outer casing member 35 is preferably of an angle α with the horizontal plane, 0 < α < 90°, to facilitate the door panel 12, the countersunk head screw 40, the coupling rod 25, and the joint bearing 13 The combined gravity of the adjustment plate 14, the gasket 16, the countersunk screw 18, and the retaining ring 19 can be applied to the contact surface of the gasket 16 and the valve port 10 to enhance the fit or seal effect. The most desirable angle range is 40 < α < 80°. For the present embodiment, the angle α between the valve port 10 and the horizontal plane is designed to be 74°.

Referring to Figure 9, the shutter valve embodiment of the present invention operates as follows: When the shutter valve 3 is closed and the negative pressure fan 2 (see Figure 1) is not activated, the gasket 16 is subjected to two pre-tensioning forces:

1. The joint surface of the aforementioned door panel 12, countersunk head screw 40, coupling shaft 25, joint bearing 13, adjustment plate 14, gasket 16, countersunk head screw 18, and retaining ring 19 at the contact surface of the inclined valve port 10. The upper partial pressure N1 has a value according to the formula (1): N1 = G × cos α = G × cos 74 ° = 0.276 G, where G is the total weight of the above components.

2. The rotary driving member 24 applies the counterclockwise torque M1 to the contact surface of the valve port 10, and the contact surface of the valve port 10 is subjected to the pressure N2, which can also be calculated according to the formula (2): N2 = M1/L. As mentioned above, the counterclockwise torque does not necessarily originate from the rotary drive components in the implementation, such as the design of the torsion spring.

When the shutter valve 3 is still closed, after the negative pressure fan 2 is started, the gasket 16 will be subjected to triple external force, except for the above two external forces, since the left space of the shutter valve 3 is the breathing pipe positive pressure P1, and the right side of the shutter valve 3 is The negative pressure P2 generated by the suction of the fan 2 is set to the equivalent diameter D of the valve port 10, and the positive pressure N3 applied to the gasket 16 due to the pressure difference can be calculated by the following formula (3):

N3 = π (D/sinα)2(P1+P2)/4 (3)

By adopting the design described above, the shutter valve 3 can ensure a reliable sealing of the shutter valve 3 by the combined preloading of the triple external force in the closed state.

Referring to Figure 10, when the shutter valve 3 is required to be opened, the rotary drive member 24 will apply a clockwise torque M2 to the coupling rod 25 in the opposite direction of the torque M1. The M2 torque value should be at least greater than the gravity of the shutter valve components, piping The shutter valve 3 can be opened by the combination of the reverse torque formed by the pressure difference of the pressures P1 and P2 and the torque M1 applied to ensure the seal externally. In order to increase the opening speed and reliability of the shutter valve 3, the torque M2 applied to the coupling rod 25 by the rotary drive member 24 is generally much larger than this value. Under the action of the torque M2 outputted by the rotary drive member 24, the coupling rod 25 transmits the torque to the door panel member 11 through the two screws 40, and the door panel member 11 includes the door panel 12, the joint bearing 13, the adjustment plate 14, the gasket 16, and the screw 18. , retaining ring 19. The door panel 12 is rotated in the clockwise direction around the inner bore of the sliding bearings 37, 38. When rotated to the angle β, the door panel assembly 11 is rotated into position and the valve is fully opened. The opening speed of the shutter valve of the automatic coughing machine is required to be no more than 150ms. At this time, the torque M2 should be moderately increased to meet the requirements of use.

The angle β is usually determined by the rotational drive member 24. For example, a unidirectional electromagnet that rotates 45°-70°, a two-way electromagnet that rotates 90-180°, a motor that can adjust the step angle by the number of pulses, or a similar rotary cylinder can be used in the market. Purchased on.

When the shutter valve 3 is required to be closed, referring to Fig. 11, the rotary drive member 24 will apply a counterclockwise torque M3 opposite the M2 to the coupling rod 25, at which time the coupling rod 25 will be subjected to a combination of four gravity: torque M1 The torque M3, the pressure difference between the two sides of the door panel 12, and the gravity G of each component of the door panel, therefore, the speed of the clockwise rotation of the door panel will generally be greater than the speed of the door panel rotating counterclockwise, and the gasket 16 will quickly fit the valve port sealing surface 10. , complete the shutter valve closed.

The embodiments described above are only preferred embodiments of the present invention, and the usual changes and substitutions made by those skilled in the art within the scope of the present invention are included in the scope of the present invention.

1‧‧‧Cough machine
2‧‧‧Fan
3‧‧‧Shutter valve
4‧‧‧Ball valve
5‧‧‧Ventilator
6‧‧‧ patients
7‧‧‧ valve body
8‧‧‧Wobble member
9‧‧‧Angle adjustment member
10‧‧‧ valve port
11‧‧‧ Door panel components
12‧‧‧ Door panel
13‧‧‧ Joint bearing
14‧‧‧Adjustment board
15‧‧‧Transition board
16‧‧‧ Seal
17‧‧‧Plug
18‧‧‧ countersunk head screws
19‧‧ ‧ retaining ring
20‧‧‧door axis
21‧‧‧ Screw mounting holes
22‧‧‧ Groove
23‧‧‧Flange
24‧‧‧Rotary drive components
25‧‧‧With shaft
26‧‧‧ Output shaft
27‧‧‧ Groove
28‧‧‧Power parts
29‧‧‧Threaded holes
30‧‧‧ bumps
31‧‧‧ screw holes
32‧‧‧Export end caps
33‧‧‧O-ring
34‧‧‧ Screw washers
35‧‧‧Shell components
36‧‧‧ sealing ring
37‧‧‧First sliding bearing
38‧‧‧Second plain bearing
39‧‧‧Threaded holes
40‧‧‧ countersunk head screws
41‧‧‧ Groove
42‧‧‧ screws
44‧‧‧Closed cavity
45‧‧‧buffer block
A‧‧‧Cylindrical rotation
B‧‧‧Rotary
C‧‧‧Flat slide
G‧‧‧Gravity
L‧‧‧ distance
M1‧‧‧ Torque
M2‧‧‧ Torque
M3‧‧‧ Torque
N‧‧‧ force
P1‧‧‧ positive pressure
P2‧‧‧ negative pressure α‧‧‧ angle β‧‧‧ angle

Figure 1 is a schematic view of the application of the shutter valve of the present invention. 2 is a simplified schematic view of the mechanical structure of the shutter valve of the present invention. 3 is an exploded view of a preferred embodiment of the shutter valve core component door panel member 11 of the present invention. 4 is a perspective view of an adjustment plate of a shutter valve of the present invention. Fig. 5 is a perspective view of a rotary drive member of the shutter valve of the present invention. Figure 6 is a perspective view of a preferred embodiment of the shutter valve of the present invention. Figure 7 shows a perspective view of the housing element of Figure 6. Figure 8 shows a cross-sectional view of the assembled shutter valve along the centerline of the shaft. Figure 9 shows a cross-sectional view of the assembled shutter valve along the centerline of the pipe. Figure 10 shows a cross-sectional view of the assembled shutter valve in the open state along the centerline of the pipe. Figure 11 shows a cross-sectional view along the centerline of the pipeline during the closing of the assembled shutter valve.

7‧‧‧ valve body

8‧‧‧Wobble member

9‧‧‧Angle adjustment member

10‧‧‧ valve port

A‧‧‧Cylindrical rotation

B‧‧‧Rotary

C‧‧‧Flat slide

G‧‧‧Gravity

L‧‧‧ distance

M1‧‧‧ Torque

M2‧‧‧ Torque

N‧‧‧ force

‧‧‧‧ angle

‧‧‧‧角角

Claims (21)

A shutter valve comprising: a swinging member rotatably fixed to a valve body, the valve body having a valve port, the swinging member being rotatable in a direction close to or away from the valve port; an angle adjustment A member, the angle adjusting member capable of covering the valve port, the angle adjusting member being coupled to the swing member, the angle adjusting member being capable of adjusting an angle thereof with respect to the valve port. The shutter valve of claim 1, wherein the shutter valve comprises: the angle adjusting member and the swinging member forming a spherical rotation 埠. The shutter valve of claim 2, wherein the swinging member and the valve body form a cylindrical rotating jaw, and the angle adjusting member and the valve port form a planar sliding jaw. The shutter valve of claim 1, wherein the swinging member and the valve body form a cylindrical rotating jaw, and the angle adjusting member and the valve port form a planar sliding jaw. The shutter valve of claim 1, wherein the swinging member comprises: a door panel and a door panel shaft, the door panel shaft being capable of being applied with an external rotational torque to drive the door panel to rotate together; the angle adjusting member comprising a joint bearing and an adjusting plate, the outer circumferential surface of the joint bearing is embedded in the door panel, the adjusting plate has a transition plate and an external program disposed on the transition plate, and the plugging program can be inserted into the joint bearing, The adjustment plate and the joint bearing are fastened together. The shutter valve of claim 5, wherein the door panel is integrally formed with the joint bearing. The shutter valve according to claim 5, wherein the door panel has a circular shape and has an annular hole, and the joint bearing is embedded in the inner cylindrical surface by fitting the outer cylindrical surface to the inner surface of the annular hole. In the door panel. The shutter valve of claim 5, wherein the angle adjusting member further comprises a retaining ring, and a countersunk screw is connected to the threaded hole of the plugging program through the retaining ring to prevent the plugging program from The joint bearing is pulled out. The shutter valve of claim 8, wherein the angle adjusting member further comprises a gasket, the adjusting plate further has a flange, and the flange and the plugging program are disposed on the transition plate On the side, the flange has a recess through which the gasket can be fixed to the adjustment plate. The shutter valve of claim 5, wherein the shutter valve further comprises a rotary drive member, the rotary drive member comprising a power element for generating a rotational force and an output shaft, the output shaft being inserted The door shaft is fastened thereto to drive the door shaft to rotate. The shutter valve of claim 5, wherein the shutter valve further includes a rotation driving member including a power component for generating a rotational force, an output shaft, and a coupling shaft, A coupling shaft is coupled to the output shaft to transmit torque, and the coupling rod is inserted into the door shaft and fastened thereto to drive the door shaft to rotate. The shutter valve of claim 11, wherein the coupling of the coupling rod and the output shaft comprises: a joint of a protrusion and a groove, a screw fastening connection, a spline sleeve connection, and a coupling Connected, or connected in one. The shutter valve of claim 11, wherein the valve body further comprises a housing member and an outlet end cover, the two are combined to form a closed cavity, and a door panel assembly is mounted in the closed cavity. The shutter valve of claim 13, wherein the outer side of the outer casing member has a groove, and the groove is provided with an O-ring for preventing the outer casing member from being tightly sealed with the outlet end cover. The closed cavity and the external environment leak from each other. The shutter valve of claim 13, wherein the outer casing member further comprises a first sliding bearing and a second sliding bearing, the coupling rod sequentially inserting the first sliding bearing, the door panel shaft and the first Two sliding bearings. The shutter valve of claim 15, wherein the outer casing member further comprises a sealing ring sleeved on the coupling rod or the output shaft to prevent the closed cavity from being along the connecting rod, A gap is formed between the first sliding bushing, the gap formed between the output shaft and the power element, and the external environment. The shutter valve of claim 15, wherein the coupling formed between the coupling rod, the first sliding sleeve, the output shaft and the power component is mechanically sealed, filled with packing, and magnetically sealed. Rotating the dynamic seal to prevent leakage between the closed cavity and the external environment. The shutter valve of claim 16, wherein the outer casing member further comprises a buffer block for mitigating an impact on the valve body when the door panel is opened, the buffer block being disposed in the closed cavity. The shutter valve of claim 1, wherein the plane of the valve port is at an angle of between 0 and 90 degrees from the horizontal plane. The shutter valve of claim 1, wherein the plane of the valve port is at an angle of between 40 and 80 degrees from the horizontal. The shutter valve according to claim 11, wherein the fastening connection between the coupling rod and the door shaft is connected by a screw, a pin, a key, a clamp, and a coupling.