Portable small aspirator

Abstract

The portable small aspirator comprises a liquid storage bin, one end of the liquid storage bin is provided with an opening, a suction device in sliding fit is arranged in the liquid storage bin, the suction device comprises a flow dividing box and a mounting box, a vacuum pump is mounted in the mounting box, and an air suction cavity is formed in the flow dividing box; the side, facing the liquid storage bin, of the air suction cavity is open and communicates with the liquid storage bin, an air suction connector is fixedly connected to the flow dividing box and connected with a liquid suction hose, a vacuum pump is fixedly installed on the flow dividing box, and the air suction end of the vacuum pump communicates with the air suction cavity. The vacuum pump sucks air in the air suction cavity, so that negative pressure is formed in the air suction cavity, and suffocation liquid in the respiratory tract is sucked into the air suction cavity. The suction device is movably matched with the liquid storage bin in a drawing mode, so that the suction device is contracted into the liquid storage bin during carrying, the overall size is reduced, and carrying is convenient; and the battery voltage is amplified through the voltage amplification circuit and is stably output as the working voltage of the vacuum pump, so that the equipment is miniaturized and the cost is low.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aspirator structure, and particularly relates to a portable small aspirator. BACKGROUND

[0002] The aspirator is commonly used for removing respiratory tract secretions, surgical residues and the like. In modern battlefield first aid, the proportion of respiratory tract obstruction caused by explosion injury is high, and a seriously blocked wounded person can die within 4-6 minutes after suffocation. At present, the first-line quick solution is manual picking out, organ incision, cricothyroid membrane puncture (which is harmful to the wounded person) and the like, which is inconvenient to operate and rescue.

[0003] However, the existing portable aspirator has serious defects: the electric aspirator is too large in size and has no endurance capability, and is difficult to meet the complex battlefield environment; the currently marketed manual portable product is generally >1.5 dm³ in size, which is large in size and inconvenient to carry by a single soldier, cannot be included in the team-level carrying equipment, needs to be carried by medical soldiers to the front line for use on wounded persons, and delays the arrival time and rescue time; it is difficult for a single person to operate, and is insufficient to deal with special situations such as battlefield; the air pump seal is easily damaged due to collision during air drop, and cannot be quickly reconstructed, and it is difficult to form wartime medical support force in time in the face of adverse conditions on the front line.

[0004] In the civil scene, the existing household sputum suction device is also large in size and difficult to be equipped with related patients, and is difficult to rescue in time in the face of sudden respiratory obstruction; and the manual aspirator is still difficult to carry, and is complex to operate, cannot be self-rescued, and has difficulty in being quickly used by non-professionals, and even if it is carried, it is difficult to obtain timely rescue when traveling.

[0005] Therefore, the existing electric aspirator generally has the defects of large size, inconvenience to carry, and lack of anti-backflow structure, and needs to be improved. SUMMARY

[0006] The present application aims to solve the technical problems of the existing electric aspirator, which is generally large in size, inconvenient to carry, and lacks an anti-backflow structure, and provides a portable small aspirator.

[0007] In order to achieve the above-mentioned purpose, the following technical solutions are adopted:

[0008] The utility model provides a portable small suction device, including liquid storage bin, one end of liquid storage bin is arranged as open, be provided with sliding fit suction device in liquid storage bin, the suction device includes shunt box and installation box, shunt box fixedly connected in installation box, vacuum pump is installed in installation box, be provided with suction cavity in shunt box, the side of suction cavity is open to liquid storage bin side and is linked together, fixedly connected with suction connector on shunt box, the chamber communication of suction cavity is connected with suction connector, suction connector is connected with liquid suction hose, fixedly installed with vacuum pump on shunt box, the suction end of vacuum pump is communicated with suction cavity, the inside air of suction cavity is sucked by vacuum pump and makes suction cavity form negative pressure, and the liquid in respiratory tract is sucked to the inside of suction cavity through liquid suction hose, wherein, suction device has first state and second state, when suction device is in first state, suction device is located in the inside of liquid storage bin, when suction device is in second state, suction device is pulled out from the open end of liquid storage bin and makes suction connector part leak outside the outside of liquid storage bin.

[0009] Further, the shunt box is provided with a partition plate, the partition plate divides the shunt box into a suction cavity and an outer cavity, the outer cavity is communicated with the external environment, the mounting plate is fixedly connected to the mounting box, the mounting plate is attached to the side end of the shunt box to block, the first through hole is formed in the mounting plate, the vacuum pump is fixed to the mounting plate, the suction end connector of the vacuum pump extends into the suction cavity through the first through hole, the air outlet end connector of the vacuum pump extends into the outer cavity and is communicated with the external air, the suction connector is located in the outer cavity, and the suction connector is fixed to the partition plate and communicates the liquid suction hose with the suction cavity through the partition plate.

[0010] Further, the shunt box is fixedly connected with a baffle and a protective cover, and the baffle and the protective cover are located in the suction cavity, the baffle is located on the side of the suction connector close to the suction end connector of the vacuum pump, the protective cover is located between the baffle and the suction end connector, the concave cavity with one side open is arranged on the protective cover, and the suction end connector of the vacuum pump extends into the concave cavity of the protective cover.

[0011] Further, the cross section of the baffle is semicircular, and the end of the baffle away from the partition plate extends to the inner wall of the shunt box.

[0012] Further, the end of the baffle away from the suction connector is fixedly connected with a guide plate, and two sharp corners are arranged on the side of the guide plate facing the liquid storage bin.

[0013] Further, the partition plate comprises a first segment plate, a second segment plate and a third segment plate connected in sequence, the first segment plate, the second segment plate and the third segment plate are connected to form a stepped partition plate, the suction connector is fixed to the first segment plate, and the end of the suction connector away from the first segment plate is located between the outer wall of the shunt box and the first segment plate.

[0014] Further, the shunt box is provided with an operation groove, and the air suction connector is located in the operation groove.

[0015] Further, the mounting box is provided with a guide rail, and the liquid storage bin is provided with a guide groove.

[0016] Further, the guide rail is provided with a blocking gap, and the blocking gap is located on the side of the air suction connector close to the liquid storage bin.

[0017] Further, the mounting box is provided with a battery and a circuit board, the circuit board is provided with a power supply circuit of the vacuum pump, the battery is electrically connected with the circuit board to serve as a power supply in the power supply circuit, and the power supply circuit is used for amplifying and stably outputting the voltage of the battery to the motor working voltage of the vacuum pump.

[0018] Further, the upper end of the mounting box is provided with a sealing plate, and the sealing plate is located above the vacuum pump.

[0019] The portable small suction device has the following advantages: the suction device is retracted into the liquid storage bin to reduce the overall size and facilitate carrying when being carried; the suction device is placed upward and the liquid storage bin is placed downward when being used; the suction device is partially drawn out to facilitate the connection of the air suction connector and the liquid suction hose, and the end of the liquid suction hose away from the air suction connector is placed in the respiratory tract to suck the respiratory tract; the inner cavity of the liquid storage bin forms a cavity for storing the suffocating liquid after the suction device is partially drawn out, and the inner cavity of the liquid storage bin is communicated with the air suction cavity; the communication cavity formed by the air suction cavity and the inner cavity of the liquid storage bin is sucked into a negative pressure chamber when the vacuum pump sucks the air suction cavity, so that the liquid sucked by the liquid suction hose enters the air suction cavity and falls into the lower liquid storage bin under the action of gravity; the suffocating liquid stored in the liquid storage bin can be poured out and the internal dirt can be easily cleaned after the suction device is completely pulled out from the liquid storage bin; the battery voltage is amplified and stably output as the working voltage of the vacuum pump through the voltage amplification circuit, so that the device is miniaturized and low-cost; the low input voltage is converted to high voltage through the inductance energy storage, which is suitable for battery power supply scene; the output stability is optimized through the double voltage stabilization design, the maximum output voltage is limited by the primary voltage stabilization diode, and the secondary linear voltage stabilization is smooth and direct current fluctuation, so that the motor speed in the vacuum pump is constant, and the negative pressure fluctuation is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0020] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings:

[0021] Figure 1 Fig. 4 is a perspective view of the suction device of the portable small suction apparatus according to the present application in the state of being extracted from the liquid storage bin;

[0022] Figure 2 Fig. 5 is a sectional view of the suction device of the portable small suction apparatus according to the present application in the state of being extracted from the liquid storage bin;

[0023] Figure 3 Fig. 6 is a sectional view of the suction device of the portable small suction apparatus according to the present application in the state of being retracted into the liquid storage bin;

[0024] Figure 4 Fig. 7 is a perspective view of the suction device of the portable small suction apparatus according to the present application;

[0025] Figure 5 Fig. 8 is a sectional view of the suction device of the portable small suction apparatus according to the present application;

[0026] Figure 6 Fig. 9 is a view of the internal structure of the shunt box of the portable small suction apparatus according to the present application Figure 1 ;

[0027] Figure 7 Fig. 10 is a view of the internal structure of the shunt box of the portable small suction apparatus according to the present application Figure 2 ;

[0028] Figure 8 Fig. 11 is a power supply circuit diagram of the vacuum pump of the portable small suction apparatus according to the present application.

[0029] Fig. 1 is a perspective view of the portable small suction apparatus according to the present application; Fig. 2 is a perspective view of the suction device of the portable small suction apparatus according to the present application in the state of being extracted from the liquid storage bin; Fig. 3 is a sectional view of the suction device of the portable small suction apparatus according to the present application in the state of being extracted from the liquid storage bin; Fig. 4 is a perspective view of the suction device of the portable small suction apparatus according to the present application in the state of being extracted from the liquid storage bin; Fig. 5 is a sectional view of the suction device of the portable small suction apparatus according to the present application in the state of being extracted from the liquid storage bin; Fig. 6 is a sectional view of the suction device of the portable small suction apparatus according to the present application in the state of being retracted into the liquid storage bin; Fig. 7 is a perspective view of the suction device of the portable small suction apparatus according to the present application; Fig. 8 is a sectional view of the suction device of the portable small suction apparatus according to the present application; Fig. 9 is a view of the internal structure of the shunt box of the portable small suction apparatus according to the present application; Fig. 10 is a view of the internal structure of the shunt box of the portable small suction apparatus according to the present application; Fig. 11 is a power supply circuit diagram of the vacuum pump of the portable small suction apparatus according to the present application. 1, liquid storage bin; 11, guide groove; 2, suction device; 3, shunt box; 31, air suction cavity; 32, air suction connector; 33, liquid suction hose; 34, partition plate; 341, first section plate; 342, second section plate; 343, third section plate; 35, outer cavity; 36, blocking piece; 37, protective cover; 38, flow guide plate; 39, sharp corner; 310, operation groove; 4, mounting box; 41, mounting plate; 42, first via hole; 43, guide rail; 431, blocking gap; 5, vacuum pump; 51, air suction end connector; 52, air outlet end connector; 6, battery; 7, circuit board; 8, sealing plate; 81, pull strip. DETAILED DESCRIPTION

[0030] It should be understood that the embodiments described herein merely serve to illustrate the present application and are not intended to limit the present application.

[0031] Clearly and completely describe the technical solutions in the embodiments of the present application in combination with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor belong to the scope of protection of the present application.

[0032] It should be noted that all directional indications (such as up-down-left-right-front-back...) in the embodiments of the present application are only used to explain the relative position relationship between the components, the motion condition, etc. in a certain posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly. The connection can be direct connection or indirect connection.

[0033] As shown in Figures 1-8 A portable small suction device, comprising a liquid storage bin 1, one end of the liquid storage bin 1 is provided as an open end, a sliding fit suction device 2 is arranged in the liquid storage bin 1, the suction device 2 comprises a shunt box 3 and a mounting box 4, the shunt box 3 is fixedly connected to the mounting box 4, a vacuum pump 5 is installed in the mounting box 4, an air suction cavity 31 is arranged in the shunt box 3, the air suction cavity 31 is open towards the side of the liquid storage bin and is in communication with the liquid storage bin 1, an air suction connector 32 is fixedly connected to the shunt box 3, the air suction connector 32 is in communication with the cavity of the air suction cavity 31, a liquid suction hose 33 is connected to the air suction connector 32, the vacuum pump 5 is fixedly installed on the shunt box 3, the air suction cavity 31 is in communication with the air suction end of the vacuum pump 5, the vacuum pump 5 sucks the air inside the air suction cavity 31 to form a negative pressure in the air suction cavity 31, and the liquid in the respiratory tract is sucked out to the air suction cavity 31 through the liquid suction hose 33; wherein the suction device 2 has a first state and a second state, when the suction device 2 is in the first state, the suction device 2 is located inside the liquid storage bin 1, when the suction device 2 is in the second state, the suction device 2 is pulled out from the open end of the liquid storage bin 1 so that the air suction connector 32 is partially exposed outside the liquid storage bin 1.

[0034] By means of the above technical scheme, the suction device 2 is in pulling cooperation with the liquid storage bin 1, so that when the device is carried, the suction device 2 is retracted into the liquid storage bin 1, thereby reducing the overall size and facilitating carrying. When in use, the suction device 2 is placed upward and the liquid storage bin 1 is placed downward. When suctioning sputum or other suffocating liquid in the respiratory tract, the suction device 2 is partially extracted, so that the air suction connector 32 is connected with the liquid suction hose 33, and the end of the liquid suction hose 33 away from the air suction connector 32 is placed in the respiratory tract to perform suction. After the suction device 2 is partially extracted, the inner cavity of the liquid storage bin 1 forms a cavity for storing suffocating liquid, and the inner cavity of the liquid storage bin 1 is in communication with the air suction cavity 31. When the vacuum pump 5 sucks the air suction cavity 31, the communication cavity formed by the air suction cavity 31 and the inner cavity of the liquid storage bin 1 is sucked into a negative pressure chamber, so that the liquid sucked by the liquid suction hose 33 enters the air suction cavity 31 and falls into the liquid storage bin 1 below under the action of gravity and is stored. After use, the suction device 2 is completely pulled out of the liquid storage bin, and the suffocating liquid stored in the liquid storage bin 1 can be poured out, and the interior can be easily cleaned. The vacuum pump 5 is a direct-current micro vacuum pump 5. To facilitate repeated use of the suction device 2, the liquid suction hose 33 is a disposable hose.

[0035] Specifically, the shunt box 3 is provided with a partition plate 34, the partition plate 34 divides the shunt box 3 into an air suction cavity 31 and an outer cavity 35, the outer cavity 35 is in communication with the external environment, the mounting plate 41 is fixedly connected to the mounting box 4, the mounting plate 41 is in close contact with the side end of the shunt box 3 and is sealed, the first through hole 42 is formed in the mounting plate 41, the vacuum pump 5 is fixed to the mounting plate 41, and the air suction end connector 51 of the vacuum pump 5 extends into the air suction cavity 31 through the first through hole 42. The air outlet end connector 52 of the vacuum pump 5 extends into the outer cavity 35 through the mounting plate 41 and is in communication with the external air, the air suction connector 32 is located in the outer cavity 35, and the air suction connector 32 is fixed to the partition plate 34 and passes through the partition plate 34 to connect the liquid suction hose 33 with the air suction cavity 31. The mounting plate 41 is in close contact with the shunt box 3, so that the air suction cavity 31 enclosed by the mounting plate 41, the partition plate 34 and the inner wall of the shunt box 3 forms an independent chamber with an opening facing the liquid storage bin 1, and forms a closed space by cooperating with the inner cavity of the liquid storage bin 1. A negative pressure space can be formed by suction of the vacuum pump 5, so that the external suffocating liquid is sucked into the liquid storage bin 1.

[0036] Specifically, the baffle 36 and the protective cover 37 are fixedly connected in the shunt box 3, and the baffle 36 and the protective cover 37 are located in the suction cavity 31. The baffle 36 is located on the side of the suction joint 32 close to the suction end joint 51 of the vacuum pump 5, and the protective cover 37 is located between the baffle 36 and the suction end joint 51. The protective cover 37 is provided with a recess with one side open, and the suction end joint 51 of the vacuum pump 5 extends into the recess of the protective cover 37. When the asphyxiation liquid sucked into the suction cavity 31 is injected into the suction cavity 31, it is blocked by the baffle 36, avoiding splashing of the sucked liquid to the side of the vacuum pump 5, and at the same time guiding the sucked liquid to the side of the liquid storage bin 1. At the same time, the protective cover 37 covers the suction end joint 51 of the vacuum pump 5 to protect it from being blocked by the sucked liquid from being sucked into the vacuum pump 5, thereby preventing the liquid sucked into the suction cavity 31 from flowing reversely into the vacuum pump 5.

[0037] Specifically, the cross section of the baffle 36 is semicircular, and the end of the baffle 36 away from the partition plate 34 extends to the inner wall of the shunt box 3.

[0038] Specifically, the end of the baffle 36 away from the suction joint 32 is fixedly connected with a flow guide plate 38, and the flow guide plate 38 is provided with two sharp corners 39 on the side facing the liquid storage bin 1. When the suction joint 32 sucks the asphyxiation liquid, the asphyxiation liquid is sprayed into the shunt box 3 along the baffle 36 and impacts on the flow guide plate 38. The sharp corners 39 on the flow guide plate 38 guide the relatively thick liquid, facilitating the asphyxiation liquid to fall into the liquid storage bin 1, and at the same time, the flow guide plate 38 also blocks the sprayed asphyxiation liquid, avoiding the asphyxiation liquid adhering to the inner wall of the shunt box 3.

[0039] Specifically, the partition plate 34 includes a first section plate 341, a second section plate 342 and a third section plate 343 connected in sequence, and the first section plate 341, the second section plate 342 and the third section plate 343 are connected into a stepped partition plate 34. The suction joint 32 is fixed on the first section plate 341, and the end of the suction joint 32 away from the first section plate 341 is located between the outer wall of the shunt box 3 and the first section plate 341. By setting a gap between the first section plate 341 and the outer wall and setting the suction joint 32 between the outer wall of the shunt box 3 and the first section plate 341, the suction joint 32 is prevented from leaking outside the shunt box 3, facilitating storage in the liquid storage bin 1, and also preventing the suction joint 32 from being easily broken by collision when leaking outside the shunt box 3.

[0040] Specifically, the shunt box 3 is provided with an operation groove 310, the operation groove 310 is located in the outer cavity 35, and the suction joint 32 is located in the operation groove 310. Therefore, the liquid suction hose 33 can be easily sleeved on the suction joint 32.

[0041] Specifically, the outer wall of the mounting box 4 is fixedly connected with a guide rail 43, and the inner wall of the liquid storage bin 1 is provided with a guide groove 11, and the guide rail 43 is clamped in the guide groove 11 and is in sliding fit with the guide groove 11. Through the sliding fit of the guide rail 43 and the guide groove 11, the guide fit is more compact, and the shaking of the suction device 2 after the partial structure is pulled out is avoided.

[0042] Specifically, as shown in Figure 4 , the guide rail 43 is provided with a blocking gap 431, and the blocking gap 431 is located on the side of the air inlet joint 32 close to the liquid storage bin 1. By setting the blocking gap, after the suction device 2 is pulled out, hard objects such as branches, coins, etc. are put into the blocking gap, so that the suction device 2 can be avoided to be retracted into the liquid storage bin 1, and when it is stored, the hard objects can be taken out.

[0043] As shown in Figure 5 , 8 , the mounting box 4 is provided with a battery 6 and a circuit board 7, the circuit board 7 is provided with a power supply circuit of the vacuum pump 5, the battery 6 is electrically connected with the circuit board 7 to serve as a power supply in the power supply circuit, and the power supply circuit is used to amplify the battery voltage and stably output the motor working voltage of the vacuum pump. In the power supply circuit of the vacuum pump 5, a voltage amplification circuit is arranged to connect the low-voltage voltage to the electrode of the vacuum pump 5 after boosting, and specifically, the voltage amplification circuit converts the stable output of 2-5V battery voltage into 24V vacuum pump 5 working voltage, so as to realize the stable output of the working voltage of the vacuum pump 5 by the low-voltage battery, improve the suction pressure and working stability.

[0044] Specifically, as shown in Figure 8 , the power supply circuit includes a battery power supply V1, a transistor Q2 and a transistor Q3, a switch tube Q1, an inductor L1, a primary filter capacitor C1, a high-frequency filter capacitor C2, a secondary filter capacitor C3, a voltage stabilizing diode D1A, a clamping diode D2, a diode D3, a resistor R1 and a resistor R2.

[0045] Specifically, the battery power supply V1 provides a battery voltage of 2-5V through the battery 6; the switch tube Q1 is an NPN transistor, and a triode with a specification type of 2N2222 is adopted; the transistor Q2 and the transistor Q3 are both PNP transistors, and a transistor with a specification type of 2N2904A is adopted; the primary filter capacitor C1 has a specification of 100μF; the high-frequency filter capacitor C2 has a specification of 510pF; the secondary filter capacitor C3 has a specification of 100μF; the voltage stabilizing diode D1A adopts a diode with a specification type of BZB784-C9V1 to ensure the working of the transistor Q3; the clamping diode D2 adopts a diode with a specification type of 1N4148; the diode D3 adopts a diode with a specification type of 1N4148; the resistor R1 has a specification of 5.1kΩ; and the resistor R2 has a specification of 22kΩ.

[0046] The power supply circuit has an input filtering function, the primary filtering capacitor C1 in the circuit constitutes an input filtering network, eliminates battery power supply ripple, and avoids load changes causing input voltage fluctuations; has an inductive energy storage boost function, stores energy in inductor L1 when switch tube Q1 is turned on, and releases energy in inductor L1 when it is turned off, generates a reverse electromotive force higher than the input voltage through electromagnetic induction principle; has a high-voltage output rectification function, realizes primary rectification and voltage amplitude limitation by voltage stabilizing diode D1A, converts pulse high voltage into DC output; has a dual linear voltage stabilizing function, uses dual PNP transistor Q2 and transistor Q3 to build a parallel linear voltage stabilizing structure, stabilizes output through base-emitter voltage drop, and reduces ripple noise; has a ripple suppression function, connects high-frequency filtering capacitor C2 in parallel in the oscillation link to absorb switching noise and prevent high-frequency interference from being coupled to the output end; has a dynamic protection mechanism of reverse peak voltage clamping, uses clamping diode D2 to absorb the reverse high voltage generated at the moment when inductor L1 is turned off, and protects switch tube Q1 from being broken down. The whole realizes high-efficiency boost capability, realizes low-input-voltage-to-high-voltage conversion through inductor L1 energy storage, adapts to battery power supply scenarios; optimizes output stability, uses dual voltage stabilizing design, primary voltage stabilizing diode D1A limits the maximum output voltage, and secondary linear voltage stabilizing smooths DC fluctuations, ensures constant motor speed in vacuum pump 5, and avoids negative pressure fluctuations; realizes anti-interference reliability, uses input / output end filtering capacitors such as primary filtering capacitor C1 and secondary filtering capacitor C3 to suppress power supply noise, and high-frequency noise reduction capacitor to block oscillation interference; realizes critical state protection, uses clamping diode D2 to prevent switch tube Q1 from being damaged by overvoltage, and improves circuit robustness in a field vibration environment.

[0047] Specifically, as shown in Figure 3 The upper end of the mounting box 4 is packaged with an enclosure plate 8, and the enclosure plate 8 is located above the vacuum pump 5. The enclosure plate 8 is fixedly connected with a pull belt 81. The battery 6, the circuit board and the vacuum pump 5 are packaged in the mounting box 4 by adhesive packaging of the enclosure plate 8. The suction device 2 can be easily pulled out of the liquid storage bin 1 by pulling the pull belt 81.

[0048] The part not involved in the technical scheme can be realized by using the prior art.

[0049] The basic principles, main features and characteristics of the present application have been shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application includes the appended claims and their equivalents.

Claims

1. A portable miniature suction device, characterized in that: The system includes a liquid storage tank (1), one end of which is open. A sliding suction device (2) is installed in the liquid storage tank (1). The suction device (2) includes a diversion box (3) and a mounting box (4). The diversion box (3) is fixedly connected to the mounting box (4). A vacuum pump (5) is installed in the mounting box (4). A suction chamber (31) is provided in the diversion box (3). The suction chamber (31) is open on the side facing the liquid storage tank and communicates with the liquid storage tank (1). A suction connector (32) is fixedly connected to the diversion box (3). The suction connector (32) communicates with the chamber of the suction chamber (31). The suction connector (32) is connected to a liquid suction soft... The tube (33) is fixedly installed with a vacuum pump (5). The suction end of the vacuum pump (5) is connected to the suction chamber (31). The vacuum pump (5) draws air from the suction chamber (31) to form a negative pressure in the suction chamber (31). The suffocating liquid in the respiratory tract is drawn out into the suction chamber (31) through the suction hose (33). The suction device (2) has a first state and a second state. When the suction device (2) is in the first state, the suction device (2) is located inside the liquid storage tank (1). When the suction device (2) is in the second state, the suction device (2) is pulled out from the open end of the liquid storage tank (1) so that the suction connector (32) is partially exposed outside the liquid storage tank (1).

2. The portable mini suction device according to claim 1, characterized in that: The flow divider (3) is provided with a partition (34), which divides the flow divider (3) into an intake chamber (31) and an outer chamber (35). The outer chamber (35) is in communication with the external environment. A mounting plate (41) is fixedly connected to the mounting box (4). The mounting plate (41) is fitted and sealed to the side of the flow divider (3). A first through hole (42) is provided on the mounting plate (41). The vacuum pump (5) is fixed to the mounting plate (41). Above, the suction end connector (51) of the vacuum pump (5) extends through the first through hole (42) into the suction chamber (31); the outlet end connector (52) of the vacuum pump (5) extends through the mounting plate (41) into the outer cavity (35) and communicates with the outside air; the suction connector (32) is located in the outer cavity (35), and the suction connector (32) is fixed on the partition plate (34) and communicates the liquid suction hose (33) with the suction chamber (31) through the partition plate (34).

3. A portable mini suction device according to claim 2, characterized in that: The flow divider box (3) is fixedly connected with a baffle (36) and a protective cover (37), and the baffle (36) and the protective cover (37) are located in the suction chamber (31). The baffle (36) is located on the side of the suction connector (32) and the partition (34) near the suction end connector (51) of the vacuum pump (5). The protective cover (37) is located between the baffle (36) and the suction end connector (51). The protective cover (37) is provided with a concave cavity with one side open, and the suction end connector (51) of the vacuum pump (5) extends into the concave cavity of the protective cover (37).

4. A portable mini suction device according to claim 3, characterized in that: The cross-section of the baffle (36) is semi-circular, and the end of the baffle (36) away from the partition (34) extends to the inner wall of the diversion box (3).

5. A portable mini suction device according to claim 3, characterized in that: The baffle (36) is fixedly connected to a guide plate (38) at the end away from the suction connector (32), and the guide plate (38) has two sharp corners (39) on the side facing the liquid storage tank (1).

6. A portable mini suction device according to claim 3, characterized in that: The partition (34) includes a first section plate (341), a second section plate (342), and a third section plate (343) connected in sequence. The first section plate (341), the second section plate (342), and the third section plate (343) are connected in a stepped form of the partition (34). The suction connector (32) is fixed on the first section plate (341). The part of the suction connector (32) away from the first section plate (341) is located between the outer wall of the diversion box (3) and the first section plate (341).

7. A portable miniature suction device according to claim 1, characterized in that: The mounting box (4) is fixedly connected to the outer wall of the mounting box (4), and the liquid storage tank (1) is provided with a guide groove (11). The guide rail (43) is embedded in the guide groove (11) and slides in cooperation with the guide groove (11).

8. A portable miniature suction device according to claim 7, characterized in that: The guide rail (43) has a blocking notch located on the side of the suction connector (32) near the liquid storage tank (1).

9. A portable miniature suction device according to claim 1, characterized in that: The mounting box (4) contains a battery (6) and a circuit board (7). The circuit board (7) contains a power supply circuit for the vacuum pump (5). The battery (6) is electrically connected to the circuit board (7) to serve as a power source in the power supply circuit. The power supply circuit is used to amplify the voltage of the battery (6) and output it stably to the motor operating voltage of the vacuum pump (5).

10. A portable miniature suction device according to claim 1, characterized in that: The upper end of the mounting box (4) is encapsulated with a sealing plate (8), which is located above the vacuum pump (5); a pull strap (81) is fixedly connected to the sealing plate (8).

Images