CN110038172B - Liquid pump - Google Patents
Liquid pump Download PDFInfo
- Publication number
- CN110038172B CN110038172B CN201910423267.4A CN201910423267A CN110038172B CN 110038172 B CN110038172 B CN 110038172B CN 201910423267 A CN201910423267 A CN 201910423267A CN 110038172 B CN110038172 B CN 110038172B
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- China
- Prior art keywords
- air
- liquid
- liquid collecting
- gear
- sliding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000007788 liquid Substances 0.000 title claims abstract description 273
- 238000007789 sealing Methods 0.000 claims abstract description 132
- 238000000605 extraction Methods 0.000 claims abstract description 44
- 238000005086 pumping Methods 0.000 claims abstract description 33
- 238000001514 detection method Methods 0.000 claims description 68
- 230000000903 blocking effect Effects 0.000 claims description 63
- 238000003825 pressing Methods 0.000 claims description 50
- 230000005540 biological transmission Effects 0.000 claims description 21
- 238000004891 communication Methods 0.000 claims description 19
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 6
- 210000001503 joint Anatomy 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 8
- 206010052428 Wound Diseases 0.000 description 13
- 208000027418 Wounds and injury Diseases 0.000 description 13
- 238000007599 discharging Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000013022 venting Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/71—Suction drainage systems
- A61M1/74—Suction control
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/80—Suction pumps
- A61M1/81—Piston pumps, e.g. syringes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B33/00—Pumps actuated by muscle power, e.g. for inflating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F3/00—Pumps using negative pressure acting directly on the liquid to be pumped
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
- A61M2205/3344—Measuring or controlling pressure at the body treatment site
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Jet Pumps And Other Pumps (AREA)
- External Artificial Organs (AREA)
Abstract
The invention provides a liquid pump which comprises a liquid collecting bottle, a sealing cover, a manual air extracting device, an air pressure sensor, an anti-overpressure air leakage locking device, a control circuit device, a power supply device and a liquid extracting component, wherein the sealing cover is sealed at the top of the liquid collecting bottle, and a sealed liquid collecting cavity is formed by the sealing cover and the liquid collecting bottle; the manual air extracting device is arranged on the liquid collecting bottle and the sealing cover, and is communicated with the liquid collecting cavity, and is operated to extract the gas in the liquid collecting cavity to the outside; the air pressure sensor stretches into the liquid collecting cavity, and when the air pressure sensor detects that the liquid collecting cavity reaches a preset air pressure value, the air extraction end of the manual air extraction device is communicated with the outside through the anti-overpressure air leakage locking device and the manual air extraction device is locked; the control circuit device is electrically connected to the anti-overvoltage air leakage locking device and the air pressure sensor; the power supply device is arranged on the sealing cover and is electrically connected with the control circuit device; the liquid pumping assembly is detachably communicated with the liquid collecting cavity.
Description
Technical Field
The invention relates to the field of medical equipment, in particular to a liquid pump.
Background
For the treatment of wounds after surgical operations, effusion is often generated in the wounds, and the generated effusion needs to be timely sucked out to ensure the normal healing of the wounds.
At present, effusion generated in a suction wound is usually completed through external liquid suction equipment, but the existing liquid suction equipment is often complicated in structure, huge in size, high in manufacturing cost, complicated in operation, incapable of controlling the air pressure value, liquid suction speed and liquid suction amount of liquid suction, complicated and complicated in use process for compensating negative pressure, inconvenient to use and safe in use.
Therefore, there is an urgent need for a liquid pump to overcome the above-mentioned problems.
Disclosure of Invention
An object of the present invention is to provide a liquid pump which has the advantages of simple structure, small volume, low manufacturing cost, simple operation and capability of controlling the air pressure value, liquid pumping speed and liquid pumping amount.
To achieve the above object, the present invention provides a liquid pump comprising:
A liquid collecting bottle;
the sealing cover is sealed at the top of the liquid collecting bottle, and a sealed liquid collecting cavity is formed by the sealing cover and the liquid collecting bottle;
The manual air extracting device is arranged on the liquid collecting bottle and the sealing cover, is communicated with the liquid collecting cavity and is operated to extract the gas in the liquid collecting cavity to the outside;
the air pressure sensor extends into the liquid collecting cavity;
the anti-overpressure air leakage locking device is used for communicating the air extraction end of the air extraction device with the outside and locking the manual air extraction device when the air pressure sensor detects that the preset air pressure value is reached in the liquid collection cavity;
The control circuit device is electrically connected to the overvoltage and air leakage preventing locking device and the air pressure sensor;
The power supply device is arranged on the sealing cover and is electrically connected with the control circuit device; and
The liquid suction assembly is detachably communicated with the liquid collecting cavity.
Preferably, an air extraction pipe body which is isolated from the liquid collection cavity and is vertically arranged is formed in the liquid collection bottle, the upper end of the air extraction pipe body is sealed on the sealing cover, and the lower end of the air extraction pipe body is provided with an air vent communicated with the outside;
The manual air exhaust device comprises a pressing rod, a piston, a first sealing ring and a first elastic piece, wherein the pressing rod is hermetically and slidably arranged on the sealing cover along the vertical direction, and the piston is slidably arranged in the air exhaust tube body; the piston is fixed at the lower end of the pressing rod, an annular mounting groove is formed in the piston, and the first sealing ring is movably sleeved in the annular mounting groove; the upper wall of the annular mounting groove is provided with a first exhaust notch, and the depth of the first exhaust notch is smaller than or equal to the radius of the first sealing ring; the lower wall of the annular mounting groove is provided with a second exhaust notch, and the depth of the second exhaust notch is larger than the diameter of the first sealing ring; when the piston moves upwards, the first sealing ring is far away from the first exhaust notch; when the piston moves downwards, the first sealing ring blocks the first exhaust notch; the first elastic piece is in compression butt between the piston and the bottom of the exhaust tube body.
Preferably, the liquid pump further comprises a middle cover, the middle cover is fixed on the upper side of the sealing cover, an air extraction communicating groove body is formed on the sealing cover, and the middle cover is sealed in a notch of the air extraction communicating groove body; the bottom of the air suction communicating groove body is provided with an air inlet communicated with the liquid collecting cavity and an air outlet communicated with the air suction pipe body, the air inlet is provided with an air inlet one-way valve assembly, and the air inlet one-way valve assembly allows air in the liquid collecting cavity to flow into the air suction communicating groove body in a one-way manner.
Preferably, the air inlet check valve assembly comprises an air inlet valve seat, a second sealing ring and a sealing ball body, wherein the air inlet valve seat is fixed between the bottom of the air suction communication groove body and the middle cover, an air inlet channel communicated with the air inlet is formed on the air inlet valve seat, an annular groove is formed in the air inlet channel, the second sealing ring is fixed in the annular groove, the sealing ball body is movably arranged on the second sealing ring, and an air vent groove communicated between the air inlet channel and the air suction communication groove body is formed in the top of the air inlet valve seat.
Preferably, the middle cover is provided with a gas leakage hole communicated with the air suction communication groove body, the anti-overpressure gas leakage locking device comprises a gas leakage component, a motor, a transmission component, a driving wheel and a sliding contact seat, the gas leakage component is arranged in the air suction communication groove body, and the gas leakage component can selectively block or open the gas leakage hole; the motor is fixed on the sealing cover and is electrically connected with the control circuit device; the driving wheel is pivoted on the sealing cover around a vertical axis, the transmission assembly is connected between the output end of the motor and the driving wheel in a transmission way, the sliding supporting seat horizontally slides on the upper side of the middle cover, a long driving groove perpendicular to the sliding direction of the sliding supporting seat is formed in the sliding supporting seat, the driving wheel vertically extends upwards to form a driving column deviating from the axis of the driving wheel, and the driving column vertically slides in the long driving groove; when the sliding abutting seat slides to the position right above the air release hole to be abutted against the air release assembly, the air release assembly opens the air release hole; when the sliding abutting seat is far away from the air leakage hole, the air leakage assembly blocks the air leakage hole.
Preferably, the transmission assembly comprises a worm, a first gear, a second gear, a third gear and a fourth gear which are vertically pivoted on the upper side of the sealing cover, wherein the second gear is provided with a first upper gear and a first lower gear which are coaxial, and the diameter of the first upper gear is larger than that of the first lower gear; the third gear is provided with a second upper gear and a second lower gear which are coaxial, and the diameter of the second upper gear is smaller than that of the second lower gear; the worm is fixed at the output end of the motor, the worm is meshed with the first gear, the first gear is meshed with the first upper gear, the first lower gear is meshed with the second lower gear, the second upper gear is meshed with the fourth gear, the driving wheel is fixed on the fourth gear, and the driving wheel and the fourth gear are coaxial.
Preferably, the air leakage assembly comprises a second elastic piece, a blocking block and a third sealing ring, an air leakage installation seat is formed in the air exhaust communication groove body and is positioned right below the air leakage hole, the blocking block vertically slides on the air leakage installation seat, the second elastic piece is in compression butt joint between the air leakage installation seat and the blocking block, a convex column is vertically and upwardly extended from the top of the blocking block, the convex column is in clearance penetrating and extends out of the air leakage hole, and the third sealing ring is sleeved on the bottom of the convex column; the sliding abutting seat slides to the position right above the air leakage hole to abut against the convex column to move downwards, and the plugging block and the third sealing ring are separated from the air leakage hole; when the sliding abutting seat is far away from the air leakage hole, the second elastic piece drives the blocking block and the third sealing ring to move upwards to block the air leakage hole.
Preferably, the anti-overpressure leakage locking device further comprises a locking assembly, the locking assembly comprises a sliding blocking piece and a third elastic piece, the sliding blocking piece slides on the sliding blocking piece along the sliding direction of the sliding blocking piece, the third elastic piece is in compression butt joint between the sliding blocking piece and the sliding blocking piece, a blocking groove for the blocking of the sliding blocking piece is formed in the pressing rod, and the blocking groove is right opposite to the sliding blocking piece when the pressing rod is retracted into the exhaust pipe body.
Preferably, the liquid pump further comprises a top cover, the top cover is fixed on the sealing cover, a mounting cavity is formed between the top cover and the sealing cover, and the middle cover is positioned in the mounting cavity;
The manual air exhaust device further comprises a pressing cap, wherein the pressing cap is fixed at the upper end of the pressing rod and is positioned above the top cover;
The sealing cover is provided with a liquid suction channel communicated with the liquid collecting cavity, the lower end of the liquid suction channel is provided with a one-way valve plate, the top cover is provided with a connecting channel, the lower end of the connecting channel is communicated with the upper end of the liquid suction channel, and the upper end of the connecting channel is provided with a horizontally extending inserting port;
The liquid suction assembly comprises a plug connector, a fourth sealing ring, a liquid suction pipe and a sucker, wherein the plug connector is provided with a connecting end and a plug end, the liquid suction pipe is communicated between the connecting end and the sucker, the fourth sealing ring is sleeved on the plug end, a locking groove is formed on the plug end, the plug end is plugged in the plug connector, and the fourth sealing ring is sealed between the inner wall of the plug connector and the outer wall of the plug connector;
The liquid pump further comprises a quick-connection locking piece and a fourth elastic piece, wherein the quick-connection locking piece vertically slides on at least one of the sealing cover, the middle cover and the top cover, and the fourth elastic piece is in compression butt joint between the upper side of the middle cover and the bottom of the quick-connection locking piece; one end of the quick-connection locking piece vertically extends upwards to form a pressing operation part, and the pressing operation part upwards penetrates through and extends out of the top cover; the other end of the quick-connection locking piece extends vertically upwards to form a locking part, and the locking part can be detachably clamped in the locking groove.
Preferably, the liquid pump further comprises a liquid filling dumping detection assembly, the liquid filling dumping detection assembly comprises a first top detection column, a second top detection column, a first bottom detection column and a second bottom detection column, the first top detection column, the second top detection column, the first bottom detection column and the second bottom detection column are all fixed on the sealing cover along the vertical direction, the first top detection column and the second top detection column extend into the top of the liquid collecting cavity to a preset position, and the first bottom detection column and the second bottom detection column extend into the bottom of the liquid collecting cavity to a preset position; the first bottom detection column is positioned at the left upper part of the liquid collecting cavity, and the second bottom detection column is positioned at the right upper part of the liquid collecting cavity; the exhaust pipe body is positioned in the middle of the liquid collecting cavity, the first bottom detection column is positioned at the left side of the exhaust pipe, and the second bottom detection column is positioned at the right side of the exhaust pipe; the first top detection column, the second top detection column, the first bottom detection column and the second bottom detection column are all electrically connected to the control circuit device.
Because the sealing cover of the liquid pump is sealed at the top of the liquid collecting bottle, the sealing cover and the liquid collecting bottle form a sealed liquid collecting cavity; the manual air extracting device is arranged on the liquid collecting bottle and the sealing cover, and is communicated with the liquid collecting cavity, and is operated to extract the gas in the liquid collecting cavity to the outside; the air pressure sensor stretches into the liquid collecting cavity, and when the air pressure sensor detects that the liquid collecting cavity reaches a preset air pressure value, the air extraction end of the manual air extraction device is communicated with the outside through the anti-overpressure air leakage locking device and the manual air extraction device is locked; the control circuit device is electrically connected to the anti-overvoltage air leakage locking device and the air pressure sensor; the power supply device is arranged on the sealing cover and is electrically connected with the control circuit device; the liquid pumping assembly is detachably communicated with the liquid collecting cavity. The liquid suction assembly is sucked and stuck on the wound, the gas in the liquid collection cavity is pumped to the outside through the manual air suction device, when the air pressure sensor detects that the air pressure in the liquid collection cavity reaches a preset air pressure value, the air pressure sensor feeds back to the control circuit device, the control circuit device can control the anti-overpressure air leakage locking device to communicate the air suction end of the manual air suction device with the outside and lock the manual air suction device, negative pressure is formed in the liquid collection cavity and is prevented from being too low, and meanwhile, the negative pressure formed in the liquid collection cavity can suck the accumulated liquid generated in the wound into the liquid collection cavity through the liquid suction assembly. Different liquid pumping speeds and liquid pumping amounts can be realized through different preset air pressure values, negative pressure in the liquid collecting cavity can be conveniently compensated through operating the manual air pumping device according to actual use requirements in the use process, and the liquid collecting device has the advantages of being simple in structure, small in size, low in manufacturing cost, convenient to operate, capable of controlling the air pressure value, the liquid pumping speed and the liquid pumping amount in the liquid collecting cavity, very convenient to use and capable of avoiding safety risks.
Drawings
Fig. 1 is a combined perspective view of the liquid pump of the present invention.
Fig. 2 is an exploded view of fig. 1.
Fig. 3 is a top view of fig. 1.
Fig. 4 is a cross-sectional view taken along line A-A in fig. 3.
Fig. 5 is a sectional view taken along line B-B of fig. 3.
Fig. 6 is an enlarged view of a portion C in fig. 5.
Fig. 7 is a schematic perspective view showing a piston and a first seal ring of the liquid pump according to the present invention.
Fig. 8 is a schematic perspective view of a combination of a liquid collection bottle, a sealing cap, a venting assembly, a motor, a transmission assembly, a driving wheel and an air intake one-way valve assembly of the liquid pump of the present invention.
Detailed Description
The invention will be further described with reference to the drawings and preferred embodiments, but the embodiments of the invention are not limited thereto.
Referring to fig. 1 to 5, a liquid pump 100 of the present invention includes a liquid collecting bottle 10a, a sealing cover 10b, a manual air pumping device 20, an air pressure sensor (not shown), an anti-overpressure air leakage locking device 30, a control circuit device 80a, a power supply device 90 and a liquid pumping assembly 40, wherein the sealing cover 10b is sealed at the top of the liquid collecting bottle 10a, the sealing cover 10b and the liquid collecting bottle 10a form a sealed liquid collecting cavity 11, and the liquid collecting cavity 11 is used for storing the liquid collected by a wound. The manual air extractor 20 is arranged on the liquid collecting bottle 10a and the sealing cover 10b, the manual air extractor 20 is communicated with the liquid collecting cavity 11, and the manual air extractor 20 is operated to extract the gas in the liquid collecting cavity 11 to the outside, so that negative pressure is formed in the liquid collecting cavity 11; the air pressure sensor extends into the liquid collecting cavity 11, and when the air pressure sensor detects that the preset air pressure value is reached in the liquid collecting cavity 11, the anti-overpressure air leakage locking device 30 communicates the air extraction end of the manual air extraction device 20 with the outside and locks the manual air extraction device 20; the control circuit device 80a is electrically connected to the anti-overpressure and anti-deflation locking device 30 and the air pressure sensor; the power supply device 90 is arranged on the sealing cover 10b, and the power supply device 90 is electrically connected with the control circuit device 80a; the liquid pumping assembly 40 is detachably communicated with the liquid collecting cavity 11. The liquid suction assembly 40 is sucked and stuck on the wound, the manual air suction device 20 is operated to suck the air in the liquid collection cavity 11 to the outside, when the air pressure sensor detects that the air pressure in the liquid collection cavity 11 reaches the preset air pressure value, the air pressure sensor feeds back to the control circuit device 80a, the control circuit device 80a can control the anti-overpressure air leakage locking device 30 to communicate the air suction end of the manual air suction device 20 with the outside and lock the manual air suction device 20, negative pressure is formed in the liquid collection cavity 11 and the phenomenon that the negative pressure in the liquid collection cavity 11 is too low is avoided, and meanwhile, the negative pressure formed in the liquid collection cavity 11 can suck the accumulated liquid generated in the wound into the liquid collection cavity 11 through the liquid suction assembly 40. And different preset air pressure values can realize different liquid pumping speeds and liquid pumping amounts, and negative pressure in the liquid collecting cavity 11 can be conveniently compensated by operating the manual air pumping device 20 according to actual use requirements in the use process, so that the liquid collecting device has the advantages of simple structure, small volume, low manufacturing cost, simplicity and convenience in operation, and capability of controlling the air pressure value, the liquid pumping speed and the liquid pumping amount in the liquid collecting cavity 11, is very convenient to use and avoids safety risks.
Referring to fig. 4 and 7, an air extraction tube 12 is formed in the liquid collection bottle 10a, and is isolated from the liquid collection cavity 11 and is vertically arranged, the upper end of the air extraction tube 12 is sealed on the sealing cover 10b, and the lower end of the air extraction tube 12 is provided with an air vent 121 communicated with the outside. A first filter 122 is disposed below the air vent 121 to prevent external impurities from entering the exhaust tube 12, and the first filter 122 is preferably, but not limited to, a sponge in the present embodiment. The manual air extractor 20 comprises a pressing rod 21, a piston 22, a first sealing ring 23 and a first elastic piece 24, wherein the pressing rod 21 is hermetically and slidingly penetrated on the sealing cover 10b along the vertical direction, and the piston 22 is slidingly arranged in the air extraction tube body 12. The piston 22 is fixed at the lower end of the pressing rod 21, the piston 22 is provided with an annular mounting groove 221, and the first sealing ring 23 is movably sleeved in the annular mounting groove 221; the upper wall of the annular mounting groove 221 is provided with a first air discharge gap 222, and the depth of the first air discharge gap 222 is smaller than or equal to the radius of the first sealing ring 23; the lower wall of the annular mounting groove 221 is provided with a second air discharge gap 223, and the depth of the second air discharge gap 223 is larger than the diameter of the first sealing ring 23; when the piston 22 moves upwards, the first sealing ring 23 is far away from the first air discharging gap 222, and at this time, the first air discharging gap 222, the annular mounting groove 221, the second air discharging gap 223 and the air vent 121 are mutually communicated, so that the air between the upper end of the air extracting tube 12 and the piston 22 is discharged to the outside through the first air discharging gap 222, the annular mounting groove 221, the second air discharging gap 223 and the air vent 121 in sequence. When the piston 22 moves downwards, the first sealing ring 23 blocks the first exhaust notch 222, so that the gas in the liquid collecting cavity 11 can be pumped out to the position between the upper end of the exhaust pipe body 12 and the piston 22, and the gas can be continuously discharged to the outside when the piston 22 moves upwards. The first elastic member 24 is preferably a spring, and the first elastic member 24 is in compression contact between the piston 22 and the bottom of the exhaust tube 12, and the piston 22 can be driven to automatically return upwards by the elastic force of the first elastic member 24, so that the operation of exhausting air is more labor-saving and convenient.
Referring to fig. 2, 5, 6 and 8, the liquid pump 100 of the present invention further includes a middle cover 10c, wherein the middle cover 10c is fixed on the upper side of the sealing cover 10b, the sealing cover 10b is formed with a pumping communication groove 13, and the middle cover 10c is sealed in a notch of the pumping communication groove 13. The bottom of the air extraction communicating groove body 13 is provided with an air inlet 131 communicated with the liquid collecting cavity 11 and an air outlet 132 communicated with the air extraction pipe body 12, and air in the liquid collecting cavity 11 can enter the air extraction communicating groove body 13 through the air inlet 131 and then enter the air extraction pipe body 12 through the air outlet 132. The air inlet 131 is provided with an air inlet one-way valve assembly 50, and the air inlet one-way valve assembly 50 allows air in the liquid collecting cavity 11 to flow into the air suction communicating groove body 13 in a one-way mode, so that air in the liquid collecting cavity 11 can only enter the air suction communicating groove body 13 through the air inlet 131, and air in the air suction communicating groove body 13 cannot enter the liquid collecting cavity 11, and negative pressure leakage in the liquid collecting cavity 11 is prevented. Preferably, in this embodiment, a second filter 134 is further disposed at the top of the liquid collecting cavity 11 at the air inlet 131, and the second filter 134 is preferably a sponge, so as to ensure the cleanliness of the air entering the air extracting communicating tank 13 from the inside of the liquid collecting cavity 11.
Referring to fig. 5 and 6, specifically, the intake check valve assembly 50 includes an intake valve seat 51, a second sealing ring 53 and a sealing ball 52, the intake valve seat 51 is fixed between the bottom of the air-extracting communicating groove 13 and the middle cover 10c, an intake channel 511 communicating with the air inlet 131 is formed on the intake valve seat 51, an annular groove 512 is formed in the intake channel 511, and the second sealing ring 53 is fixed in the annular groove 512. The airtight sphere 52 is a metal sphere, the airtight sphere 52 is movably arranged on the second sealing ring 53, and a ventilation groove 513 communicated between the air inlet channel 511 and the air suction communication groove 13 is formed in the top of the air inlet valve seat 51. When the piston 22 moves downwards, the air pressure in the liquid collecting cavity 11 is higher than the air pressure of the air suction communicating groove body 13, so that the sealing ball 52 is separated from the second sealing ring 53, and the air in the liquid collecting cavity 11 can be pumped out. When the piston 22 moves upwards, the air pressure in the liquid collecting cavity 11 is lower than the air pressure of the air suction communicating groove body 13, so that the sealing ball 52 is sealed on the second sealing ring 53, and the air of the air suction communicating groove body 13 cannot enter the liquid collecting cavity 11. Thereby realizing the structure that the air inlet check valve assembly 50 allows the air in the liquid collecting cavity 11 to flow into the air suction communication groove body 13 in a unidirectional way.
Referring to fig. 2, 4, 5, 6 and 8, the middle cover 10c is provided with a vent hole 15 communicated with the air exhaust communicating groove 13, the anti-overpressure vent locking device 30 comprises a vent component 31, a motor 32, a transmission component 33, a driving wheel 34 and a sliding contact seat 35, the vent component 31 is arranged in the air exhaust communicating groove 13, and the vent component 31 can selectively block or open the vent hole 15; the motor 32 is fixed on the sealing cover 10b, and the motor 32 is electrically connected to the control circuit device 80a; the driving wheel 34 is pivoted on the sealing cover 10b around a vertical axis, the transmission assembly 33 is connected between the output end of the motor 32 and the driving wheel 34 in a transmission manner, the sliding supporting seat 35 horizontally slides on the upper side of the middle cover 10c, the sliding supporting seat 35 is provided with a long driving groove 351 perpendicular to the sliding direction of the sliding supporting seat 35, the driving wheel 34 vertically extends upwards to form a driving column 341 deviating from the axis of the driving wheel 34, and the driving column 341 vertically slides in the long driving groove 351; when the sliding contact seat 35 slides to be right above the air leakage hole 15 and is pressed against the air leakage component 31, the air leakage component 31 opens the air leakage hole 15; when the sliding contact seat 35 is far away from the air leakage hole 15, the air leakage assembly 31 blocks the air leakage hole 15. When the air pressure sensor detects that the preset air pressure value is reached in the liquid collection cavity 11, the air pressure sensor is fed back to the control circuit device 80a, the control circuit device 80a can control the motor 32 to rotate and drive the driving wheel 34 through the transmission component 33, the driving wheel 34 which rotates drives the driving column 341 to drive the sliding contact seat 35 to slide to the position right above the air discharge hole 15 to abut against the air discharge component 31, the air discharge component 31 opens the air discharge hole 15, the air discharge communication groove body 13 and the air discharge pipe body 12 are communicated with the outside, and gas in the liquid collection cavity 11 can not be discharged even if the manual air discharge device 20 is continuously operated. When the air pressure sensor detects that the air pressure in the liquid collecting cavity 11 is lower than the preset air pressure value, the air pressure sensor is fed back to the control circuit device 80a, the control circuit device 80a can control the motor 32 to continue to rotate, the driving wheel 34 is driven by the transmission assembly 33, the driving wheel 34 is driven by the driving column 341 to drive the sliding contact seat 35 to be far away from the air leakage hole 15, the air leakage hole 15 can be blocked by the air leakage assembly 31, the air suction communicating groove body 13 and the air suction pipe body 12 are isolated from the outside, and the manual air suction device 20 can be continuously operated to suck negative pressure in the air compensation liquid collecting cavity 11 in the liquid collecting cavity 11.
Referring to fig. 2,4 and 8, the transmission assembly 33 includes a worm 331, a first gear 332, a second gear (not labeled in the drawings), a third gear 334 and a fourth gear 335 all vertically pivoted on the upper side of the sealing cover 10b, wherein the second gear has a first upper gear 3331 and a first lower gear (not shown in the drawings) with coaxial lines, and the diameter of the first upper gear is larger than that of the first lower gear; the third gear 334 has a second upper gear 3341 and a second lower gear 3342 with coaxial lines, and the diameter of the second upper gear 3341 is smaller than that of the second lower gear 3342; the worm 331 is fixed at the output end of the motor 32, the worm 331 is engaged with the first gear 332, the first gear 332 is engaged with the first upper gear, the first lower gear is engaged with the second lower gear 3342, the second upper gear 3341 is engaged with the fourth gear 335, the driving wheel 34 is fixed on the fourth gear 335, and the driving wheel 34 and the fourth gear 335 are coaxial. Thereby achieving a rotation variation ratio required for the motor 32 to output to the driving wheel 34 and enabling the driving wheel 34 to rotate stably.
Referring to fig. 2, 5, 6 and 8, the air release assembly 31 includes a second elastic member 311, a sealing block 312 and a third sealing ring 313, an air release mounting seat 133 disposed right below the air release hole 15 is formed in the air extraction communicating groove 13, the sealing block 312 vertically slides on the air release mounting seat 133, and a gap or a notch for air circulation is formed between the top of the air release mounting seat 133 and the middle cover 10 c. The second elastic member 311 is preferably a spring, but not limited to this, the second elastic member 311 is in compression contact between the venting mounting seat 133 and the plugging block 312, the top of the plugging block 312 extends vertically and upwardly to form a protruding column 3121, the protruding column 3121 extends out of the venting hole 15 in a clearance manner, and the third sealing ring 313 is sleeved at the bottom of the protruding column 3121; the sliding contact seat 35 slides to the position right above the air leakage hole 15 to press the convex column 3121 to move downwards, and the blocking block 312 and the third sealing ring 313 are separated from the air leakage hole 15; when the sliding contact seat 35 is far away from the air leakage hole 15, the second elastic member 311 drives the blocking block 312 and the third sealing ring 313 to move upwards to block the air leakage hole 15. The sliding contact seat 35 can drive the blocking block 312 and the third sealing ring 313 to open the air leakage hole 15 or avoid the blocking block 312 and the third sealing ring 313 to block the air leakage hole 15, so that the air extraction communication groove body 13 and the air extraction pipe body 12 are communicated or isolated from the outside, and the structure is simple and reasonable.
Referring to fig. 2, 4, 5 and 8, the anti-overpressure release locking device 30 further includes a locking component 36, the locking component 36 includes a sliding blocking piece 361 and a third elastic piece 362, the sliding blocking piece 361 slides on the sliding supporting piece 35 along the sliding direction of the sliding supporting piece 35, the third elastic piece 362 is preferably a spring, but not limited thereto, the third elastic piece 362 is in compression contact between the sliding supporting piece 35 and the sliding blocking piece 361, a blocking groove 211 for the sliding blocking piece 361 to be blocked is formed on the pressing rod 21, and when the pressing rod 21 is retracted into the extraction tube 12, the blocking groove 211 is opposite to the sliding blocking piece 361. When the air pressure sensor detects that the preset air pressure value in the liquid collecting cavity 11 is reached, the air pressure sensor feeds back to the control circuit device 80a, the control circuit device 80a can control the motor 32 to rotate, and drives the driving wheel 34 through the transmission component 33, the driving column 341 is driven to drive the sliding contact seat 35 to move towards the air discharging hole 15, the sliding contact seat 35 slides to the position right above the air discharging hole 15 to contact the protruding column 3121 to move downwards, the blocking block 312 and the third sealing ring 313 are separated from the air discharging hole 15 to open the air hole, meanwhile, the sliding contact seat 35 synchronously slides and blocks 361 to be close to the pressing rod 21, if the blocking groove 211 is not right opposite to the sliding blocking seat 361, the sliding blocking seat 361 elastically contacts and presses the pressing rod 21 under the elastic force of the third elastic component 362 until the pressing rod 21 moves to the blocking groove 211 right opposite to the sliding blocking piece 361, and the sliding blocking seat 361 can be blocked to move up and down under the elastic force of the third elastic component 362 to block the pressing rod 211 so that the air suction communicating groove 13 and the air suction pipe body 12 are communicated with the outside and locked by the pressing rod 21. When the air pressure sensor detects that the air pressure in the liquid collecting cavity 11 is lower than the preset air pressure value, the air pressure sensor feeds back to the control circuit device 80a, the control circuit device 80a can control the motor 32 to continue to rotate, and drive the driving wheel 34 through the transmission component 33, the driving wheel 34 rotates drives the driving column 341 to drive the sliding contact seat 35 to be far away from the air discharging hole 15, the sliding contact seat 35 synchronously drives the third elastic piece 362 and the sliding blocking piece 361 to be separated from the blocking groove 211 to be far away from the pressing rod 21, the blocking piece 312 and the third sealing ring 313 can block the air discharging hole 15, the air pumping communicating groove body 13 and the air pumping pipe body 12 are isolated from the outside, and the pressing rod 21 can be continuously operated to pump out negative pressure in the air compensating liquid collecting cavity 11.
Referring to fig. 1,2,3 and 8, the liquid pump 100 of the present invention further includes a top cover 10d, the top cover 10d is fixed on the sealing cover 10b, a mounting cavity 10f is formed between the top cover 10d and the sealing cover 10b, and the middle cover 10c is located in the mounting cavity 10 f. In detail, in the present embodiment, the power supply device 90 includes a battery holder 91 and a battery 92, the battery holder 91 is disposed on the middle cover 10c and is located in the mounting cavity 10f, that is, the battery holder 91 is disposed on the sealing cover 10b through the middle cover 10c, and the battery 92 is detachably mounted on the battery holder 91, and the battery holder 91 is electrically connected to the control circuit device 80a to supply power to internal electronic devices such as the control circuit device 80 a. The manual air extraction device 20 further comprises a pressing cap 25, wherein the pressing cap 25 is fixed on the upper end of the pressing rod 21, and the pressing cap 25 is positioned above the top cover 10d, so that the operation of pressing and air extraction is facilitated. The sealing cover 10b is provided with a liquid suction channel 14 communicated with the liquid collection cavity 11, the lower end of the liquid suction channel 14 is provided with a one-way valve plate (not shown), the top cover 10d is provided with a connecting channel 16, the lower end of the connecting channel 16 is communicated with the upper end of the liquid suction channel 14, and the upper end of the connecting channel 16 is provided with a horizontally extending plug-in port 17. The liquid pumping assembly 40 comprises a plug 41, a fourth sealing ring 42, a liquid pumping tube 43 and a sucker 44, wherein the plug 41 is provided with a connecting end (not shown) and a plug end 412, the liquid pumping tube 43 is communicated between the connecting end and the sucker 44, the fourth sealing ring 42 is sleeved on the plug end 412, and a locking groove 4121 is formed on the plug end 412. The plugging end 412 is plugged into the plugging port 17, and the fourth sealing ring 42 is sealed between the plugging port 17 and the plugging end 412.
Furthermore, the liquid pump 100 further includes a quick-connect locking member 60a and a fourth elastic member 60b, wherein the quick-connect locking member 60a is vertically slid on the sealing cover 10b, and of course, in other embodiments, the quick-connect locking member 60a may be vertically slid on the middle cover 10c, the top cover 10d, the sealing cover 10b, the middle cover 10c and the top cover 10d, or any two of the sealing cover 10b, the middle cover 10c and the top cover 10d, which will not be described herein. The fourth elastic member 60b is preferably a spring, but not limited thereto, and the fourth elastic member 60b is in compression contact between the upper side of the middle cover 10c and the bottom of the quick-connect locking member 60 a; one end of the quick-connection locking piece 60a vertically extends upwards to form a pressing operation part 61, and the pressing operation part 61 is upwards penetrated and extends out of the top cover 10d so as to facilitate external pressing operation; the other end of the quick-connection locking piece 60a extends vertically upwards to form a locking part 62, the locking part 62 is detachably clamped in the locking groove 4121, the plug end 412 is plugged in the plug port 17, and the fourth sealing ring 42 is sealed between the inner wall of the plug port 17 and the outer wall of the plug end 412. The plugging end 412 is plugged into the plugging port 17, and the quick-connection locking member 60a is driven to move upwards under the action of the elastic force of the fourth elastic member 60b, so that the locking portion 62 is clamped in the locking groove 4121, and the plugging end 412 of the plug 41 can be hermetically locked in the plugging port 17. Communication between the spigot 41 and the liquid collection chamber 11 is achieved. When the plugging end 412 needs to be detached from the plugging port 17, the pressing operation portion 61 extending from the top cover 10d is pressed, that is, the quick-connection locking member 60a is driven to move downward against the elastic force of the fourth elastic member 60b, so that the locking portion 62 is disengaged from the locking groove 4121, and the plugging head 41 can be pulled out of the plugging port 17, thereby completing the detachment operation of the liquid pumping assembly 40.
Referring to fig. 2,4 and 8, the liquid pump 100 of the present invention further includes a filling and dumping detection assembly (not labeled in the drawings), wherein the filling and dumping detection assembly includes a first top detection column 71, a second top detection column 72, a first bottom detection column 73 and a second bottom detection column 74, the first top detection column 71, the second top detection column 72, the first bottom detection column 73 and the second bottom detection column 74 are all fixed on the sealing cover 10b along the vertical direction, and the first top detection column 71 and the second top detection column 72 extend into the top of the liquid collection cavity 11 to a preset position, alternatively, the preset positions of the first top detection column 71 and the second top detection column 72 extending into the top of the liquid collection cavity 11 are the positions of filling scales of the liquid in the liquid collection cavity 11. The first bottom detecting column 73 and the second bottom detecting column 74 extend into the bottom of the liquid collecting cavity 11 to a preset position, and optionally, the preset positions of the first bottom detecting column 73 and the second bottom detecting column 74 extending into the bottom of the liquid collecting cavity 11 are positions of the bottoms of the first bottom detecting column 73 and the second bottom detecting column 74 close to or abutting against the bottom of the liquid collecting cavity 11. Specifically, in this embodiment, the overall depth of the liquid collecting cavity 11 is 89.5mm, and the distance from the full scale position in the liquid collecting cavity 11 to the top of the liquid collecting cavity 11 is 13.5mm, that is, the lengths of the first top detecting column 71 and the second top detecting column 72 extending into the liquid collecting cavity 11 are 13.5mm, and the distances from the bottoms of the first bottom detecting column 73 and the second bottom detecting column 74 to the bottom of the liquid collecting cavity 11 are 1.5mm, so as to meet the requirement of the detecting position. Preferably, in the present embodiment, the first bottom detecting column 73 is located at the upper left of the liquid collecting chamber 11, and the second bottom detecting column 74 is located at the upper right of the liquid collecting chamber 11; the exhaust pipe body 12 is located in the middle of the liquid collecting cavity 11, the first bottom detection column 73 is located on the left side of the exhaust pipe, and the second bottom detection column 74 is located on the right side of the exhaust pipe, so that detection accuracy is guaranteed. The first top detecting column 71, the second top detecting column 72, the first bottom detecting column 73 and the second bottom detecting column 74 are all electrically connected to the control circuit device 80a. In this embodiment, the control circuit device 80a is further provided with an alarm speaker and a preset air pressure value adjusting button, and different preset air pressure values can be adjusted through the preset air pressure value adjusting button. When the liquid collection bottle 10a is toppled, the liquid collection stored in the liquid collection cavity 11 can be conducted to the first top detection column 71 and the first bottom detection column 73, or the liquid collection can be conducted to the second top detection column 72 and the second bottom detection column 74, the control circuit device 80a detects that the liquid collection bottle 10a is toppled, and the alarm speaker on the control circuit device 80a can send out corresponding toppling alarm sound. When the accumulated liquid stored in the liquid collecting cavity 11 reaches full liquid, the first top detecting column 71 and the first bottom detecting column 73 and the second top detecting column 72 and the second bottom detecting column 74 are simultaneously conducted by the accumulated liquid, the control circuit device 80a detects that the accumulated liquid in the liquid collecting cavity 11 reaches full liquid position, the alarm speaker on the control circuit device 80a can generate corresponding full liquid alarm sound, meanwhile, the control circuit device 80a can control the motor 32 to rotate, the driving wheel 34 is driven by the transmission component 33, the rotating driving wheel 34 drives the driving column 341 to drive the sliding contact seat 35 to move towards the air release hole 15, when the sliding contact seat 35 slides to the position right above the air release hole 15 and pushes the protruding column 3121 to move downwards, the blocking block 312 and the third sealing ring 313 are separated from the air release hole 15 to open the air holes, meanwhile, the sliding contact seat 35 slides synchronously until the blocking block 361 approaches to the pressing rod 21, if the blocking groove 211 is not right opposite to the sliding blocking block 362, the sliding block 361 is elastically pushed against the pressing rod 21 under the action of the elastic force of the third elastic piece 362 until the pressing rod 21 moves until the blocking groove 21 is right opposite to the blocking groove 211 and the blocking the sliding block 361 is opposite to the sliding block 21, and the sliding block body is enabled to be communicated with the outside, and the air release groove 13 is enabled to move. Preferably, the control circuit device 80a also has a seven-day use alarm locking function, that is, when the use time of the liquid pump 100 of the present invention reaches seven days, the control circuit device 80a controls the alarm speaker to emit a corresponding stop use alarm sound, and locks the pressing rod 21, so as to ensure that the liquid pump 100 of the present invention is in a safe use period.
In the present embodiment, the control circuit device 80a includes a main board PCB, a micro-controller (such as the micro-controller ATMEGA48PA-AU manufactured by ATMEL/aitermer, but not limited thereto), a chip resistor, a chip diode, a chip inductor, and other electronic components, and the specific structure thereof is well known to those skilled in the art, so that the detailed description thereof is omitted herein. Furthermore, the specific technical structures of the control circuit device 80a electrically connected to the air pressure sensor, the motor 32, the first top detecting column 71, the second top detecting column 72, the first bottom detecting column 73 and the second bottom detecting column 74 for detecting the air pressure in the liquid collecting chamber 11, controlling whether to open the air vent hole 15 and lock the pressing rod 21, detecting whether the liquid collecting bottle 10a is toppled over, and detecting whether the liquid collecting chamber 11 is full are also known to those skilled in the art, and will not be repeated herein.
The working principle of the inventive liquid pump 100 will be described in detail with reference to the accompanying drawings:
when in use, firstly, the plugging end 412 of the plugging head 41 of the liquid pumping assembly 40 is plugged into the plugging port 17, the quick-connection locking piece 60a is driven to move upwards under the action of the elastic force of the fourth elastic piece 60b, so that the locking part 62 is clamped in the locking groove 4121, the plugging end 412 of the plugging head 41 can be locked in the plugging port 17 in a sealing manner, and then the sucking disc 44 is sucked and attached on a wound.
When the air pressure sensor detects that the air pressure in the liquid collecting cavity 11 reaches a preset air pressure value, the air pressure sensor feeds back to the control circuit device 80a, the control circuit device 80a can control the motor 32 to rotate, the driving wheel 34 is driven by the transmission assembly 33, the driving wheel 34 is rotated to drive the driving column 341 to drive the sliding contact seat 35 to slide to the position right above the air leakage hole 15 to abut against the air leakage assembly 31, the air leakage assembly 31 opens the air leakage hole 15, and the air leakage communicating groove body 13 and the air extraction pipe body 12 are communicated with the outside, so that the air in the liquid collecting cavity 11 can not be extracted even if the manual air extraction device 20 is continuously operated. Negative pressure is formed in the liquid collecting cavity 11, the negative pressure in the liquid collecting cavity 11 is prevented from being too low, and meanwhile, the negative pressure formed in the liquid collecting cavity 11 can suck accumulated liquid generated in a wound into the liquid collecting cavity 11 through the liquid sucking assembly 40.
When the air pressure sensor detects that the air pressure in the liquid collecting cavity 11 is lower than the preset air pressure value, the air pressure sensor feeds back the negative pressure in the liquid collecting cavity 11 to the control circuit device 80a, the control circuit device 80a can control the motor 32 to continue rotating and drive the driving wheel 34 through the transmission assembly 33, the rotating driving wheel 34 drives the driving column 341 to drive the sliding contact seat 35 to be far away from the air leakage hole 15, the air leakage assembly 31 can block the air leakage hole 15, the air extraction communicating groove body 13 and the air extraction pipe body 12 are isolated from the outside, and the pressing cap 25 of the manual air extraction device 20 can be continuously pressed to extract the negative pressure in the air compensating liquid collecting cavity 11 in the liquid collecting cavity 11. Until the smoking is completed.
When the liquid collection bottle 10a is toppled, the liquid collection stored in the liquid collection cavity 11 can be conducted to the first top detection column 71 and the first bottom detection column 73, or the liquid collection can be conducted to the second top detection column 72 and the second bottom detection column 74, the control circuit device 80a detects that the liquid collection bottle 10a is toppled, and the alarm speaker on the control circuit device 80a can send out a corresponding toppling alarm sound.
When the accumulated liquid stored in the liquid collecting cavity 11 reaches full liquid, the first top detecting column 71 and the first bottom detecting column 73 and the second top detecting column 72 and the second bottom detecting column 74 are simultaneously conducted by the accumulated liquid, the control circuit device 80a detects that the accumulated liquid in the liquid collecting cavity 11 reaches full liquid position, the alarm speaker on the control circuit device 80a can generate corresponding full liquid alarm sound, meanwhile, the control circuit device 80a can control the motor 32 to rotate, the driving wheel 34 is driven by the transmission component 33, the rotating driving wheel 34 drives the driving column 341 to drive the sliding contact seat 35 to move towards the air release hole 15, when the sliding contact seat 35 slides to the position right above the air release hole 15 and pushes the protruding column 3121 to move downwards, the blocking block 312 and the third sealing ring 313 are separated from the air release hole 15 to open the air holes, meanwhile, the sliding contact seat 35 slides synchronously until the blocking block 361 approaches to the pressing rod 21, if the blocking groove 211 is not right opposite to the sliding blocking block 362, the sliding block 361 is elastically pushed against the pressing rod 21 under the action of the elastic force of the third elastic piece 362 until the pressing rod 21 moves until the blocking groove 21 is right opposite to the blocking groove 211 and the blocking the sliding block 361 is opposite to the sliding block 21, and the sliding block body is enabled to be communicated with the outside, and the air release groove 13 is enabled to move.
Since the sealing cover 10b of the liquid pump 100 of the present invention is sealed at the top of the liquid collecting bottle 10a, the sealing cover 10b and the liquid collecting bottle 10a form a sealed liquid collecting cavity 11; the manual air extractor 20 is arranged on the liquid collecting bottle 10a and the sealing cover 10b, the manual air extractor 20 is communicated with the liquid collecting cavity 11, and the manual air extractor 20 is operated to extract the gas in the liquid collecting cavity 11 to the outside; the air pressure sensor extends into the liquid collecting cavity 11, and when the air pressure sensor detects that the preset air pressure value is reached in the liquid collecting cavity 11, the anti-overpressure air leakage locking device 30 communicates the air extraction end of the manual air extraction device 20 with the outside and locks the manual air extraction device 20; the control circuit device 80a is electrically connected to the anti-overpressure and anti-deflation locking device 30 and the air pressure sensor; the power supply device 90 is arranged on the sealing cover 10b, and the power supply device 90 is electrically connected with the control circuit device 80a; the liquid pumping assembly 40 is detachably communicated with the liquid collecting cavity 11. The liquid suction assembly 40 is sucked and stuck on the wound, the manual air suction device 20 is operated to suck the air in the liquid collection cavity 11 to the outside, when the air pressure sensor detects that the air pressure in the liquid collection cavity 11 reaches the preset air pressure value, the air pressure sensor feeds back to the control circuit device 80a, the control circuit device 80a can control the anti-overpressure air leakage locking device 30 to communicate the air suction end of the manual air suction device 20 with the outside and lock the manual air suction device 20, negative pressure is formed in the liquid collection cavity 11 and the phenomenon that the negative pressure in the liquid collection cavity 11 is too low is avoided, and meanwhile, the negative pressure formed in the liquid collection cavity 11 can suck the accumulated liquid generated in the wound into the liquid collection cavity 11 through the liquid suction assembly 40. And different preset air pressure values can realize different liquid pumping speeds and liquid pumping amounts, and negative pressure in the liquid collecting cavity 11 can be conveniently compensated by operating the manual air pumping device 20 according to actual use requirements in the use process, so that the liquid collecting device has the advantages of simple structure, small volume, low manufacturing cost, simplicity and convenience in operation, and capability of controlling the air pressure value, the liquid pumping speed and the liquid pumping amount in the liquid collecting cavity 11, is very convenient to use and avoids safety risks.
The present invention has been described above in connection with the embodiments, but the present invention is not limited to the embodiments disclosed above, but it is intended to cover various modifications, equivalent combinations according to the essence of the present invention.
Claims (7)
1. A fluid pump, comprising:
A liquid collecting bottle;
the sealing cover is sealed at the top of the liquid collecting bottle, and a sealed liquid collecting cavity is formed by the sealing cover and the liquid collecting bottle;
The manual air extracting device is arranged on the liquid collecting bottle and the sealing cover, is communicated with the liquid collecting cavity and is operated to extract the gas in the liquid collecting cavity to the outside;
the air pressure sensor extends into the liquid collecting cavity;
the anti-overpressure air leakage locking device is used for communicating the air extraction end of the air extraction device with the outside and locking the manual air extraction device when the air pressure sensor detects that the preset air pressure value is reached in the liquid collection cavity;
The control circuit device is electrically connected to the overvoltage and air leakage preventing locking device and the air pressure sensor;
The power supply device is arranged on the sealing cover and is electrically connected with the control circuit device; and
The liquid suction assembly is detachably communicated with the liquid collecting cavity;
An exhaust pipe body which is isolated from the liquid collecting cavity and is vertically arranged is formed in the liquid collecting bottle, the upper end of the exhaust pipe body is sealed on the sealing cover, and the lower end of the exhaust pipe body is provided with an air vent communicated with the outside;
The manual air exhaust device comprises a pressing rod, a piston, a first sealing ring and a first elastic piece, wherein the pressing rod is hermetically and slidably arranged on the sealing cover along the vertical direction, and the piston is slidably arranged in the air exhaust tube body; the piston is fixed at the lower end of the pressing rod, an annular mounting groove is formed in the piston, and the first sealing ring is movably sleeved in the annular mounting groove; the upper wall of the annular mounting groove is provided with a first exhaust notch, and the depth of the first exhaust notch is smaller than or equal to the radius of the first sealing ring; the lower wall of the annular mounting groove is provided with a second exhaust notch, and the depth of the second exhaust notch is larger than the diameter of the first sealing ring; when the piston moves upwards, the first sealing ring is far away from the first exhaust notch; when the piston moves downwards, the first sealing ring blocks the first exhaust notch; the first elastic piece is in compression abutting connection between the piston and the bottom of the exhaust pipe body;
The liquid pump further comprises a middle cover, the middle cover is fixed on the upper side of the sealing cover, an air extraction communicating groove body is formed on the sealing cover, and the middle cover is sealed in a notch of the air extraction communicating groove body; the bottom of the air suction communication groove body is provided with an air inlet communicated with the liquid collection cavity and an air outlet communicated with the air suction pipe body, the air inlet is provided with an air inlet one-way valve assembly, and the air inlet one-way valve assembly allows air in the liquid collection cavity to flow into the air suction communication groove body in a one-way manner;
the middle cover is provided with a gas leakage hole communicated with the air suction communication groove body, the anti-overpressure gas leakage locking device comprises a gas leakage component, a motor, a transmission component, a driving wheel and a sliding contact seat, the gas leakage component is arranged in the air suction communication groove body, and the gas leakage component can selectively block or open the gas leakage hole; the motor is fixed on the sealing cover and is electrically connected with the control circuit device; the driving wheel is pivoted on the sealing cover around a vertical axis, the transmission assembly is connected between the output end of the motor and the driving wheel in a transmission way, the sliding supporting seat horizontally slides on the upper side of the middle cover, a long driving groove perpendicular to the sliding direction of the sliding supporting seat is formed in the sliding supporting seat, the driving wheel vertically extends upwards to form a driving column deviating from the axis of the driving wheel, and the driving column vertically slides in the long driving groove; when the sliding abutting seat slides to the position right above the air release hole to be abutted against the air release assembly, the air release assembly opens the air release hole; when the sliding abutting seat is far away from the air leakage hole, the air leakage assembly blocks the air leakage hole.
2. The fluid pump of claim 1, wherein the intake check valve assembly comprises an intake valve seat, a second sealing ring and a sealing ball, the intake valve seat is fixed between the bottom of the air suction communication groove body and the middle cover, an intake channel communicated with the air inlet is formed on the intake valve seat, an annular groove is formed in the intake channel, the second sealing ring is fixed in the annular groove, the sealing ball is movably arranged on the second sealing ring, and a ventilation groove communicated between the intake channel and the air suction communication groove body is formed at the top of the intake valve seat.
3. The fluid pump of claim 1, wherein the transmission assembly comprises a worm and a first gear, a second gear, a third gear and a fourth gear which are all vertically pivoted on the upper side of the sealing cover, the second gear is provided with a first upper gear and a first lower gear which are coaxial, and the diameter of the first upper gear is larger than that of the first lower gear; the third gear is provided with a second upper gear and a second lower gear which are coaxial, and the diameter of the second upper gear is smaller than that of the second lower gear; the worm is fixed at the output end of the motor, the worm is meshed with the first gear, the first gear is meshed with the first upper gear, the first lower gear is meshed with the second lower gear, the second upper gear is meshed with the fourth gear, the driving wheel is fixed on the fourth gear, and the driving wheel and the fourth gear are coaxial.
4. The liquid pump of claim 1, wherein the air leakage component comprises a second elastic member, a blocking block and a third sealing ring, an air leakage installation seat is formed in the air leakage communication groove body and is positioned right below the air leakage hole, the blocking block vertically slides on the air leakage installation seat, the second elastic member is in compression abutting connection between the air leakage installation seat and the blocking block, a convex column vertically extends upwards from the top of the blocking block, the convex column penetrates through the air leakage hole in a clearance way, and the third sealing ring is sleeved at the bottom of the convex column; the sliding abutting seat slides to the position right above the air leakage hole to abut against the convex column to move downwards, and the plugging block and the third sealing ring are separated from the air leakage hole; when the sliding abutting seat is far away from the air leakage hole, the second elastic piece drives the blocking block and the third sealing ring to move upwards to block the air leakage hole.
5. The pump of claim 4, wherein the over-pressure-relief-preventing locking device further comprises a locking assembly, the locking assembly comprises a sliding blocking piece and a third elastic piece, the sliding blocking piece slides on the sliding block seat along the sliding direction of the sliding block seat, the third elastic piece is in compression abutting connection between the sliding block seat and the sliding blocking piece, a blocking groove for the sliding blocking piece to be blocked is formed in the pressing rod, and the blocking groove is opposite to the sliding blocking piece when the pressing rod is retracted into the pumping tube body.
6. The fluid pump of claim 1, further comprising a top cover secured to the sealing cover, a mounting cavity being formed between the top cover and the sealing cover, the middle cover being positioned within the mounting cavity;
The manual air exhaust device further comprises a pressing cap, wherein the pressing cap is fixed at the upper end of the pressing rod and is positioned above the top cover;
The sealing cover is provided with a liquid suction channel communicated with the liquid collecting cavity, the lower end of the liquid suction channel is provided with a one-way valve plate, the top cover is provided with a connecting channel, the lower end of the connecting channel is communicated with the upper end of the liquid suction channel, and the upper end of the connecting channel is provided with a horizontally extending inserting port;
The liquid suction assembly comprises a plug connector, a fourth sealing ring, a liquid suction pipe and a sucker, wherein the plug connector is provided with a connecting end and a plug end, the liquid suction pipe is communicated between the connecting end and the sucker, the fourth sealing ring is sleeved on the plug end, a locking groove is formed on the plug end, the plug end is plugged in the plug connector, and the fourth sealing ring is sealed between the inner wall of the plug connector and the outer wall of the plug connector;
The liquid pump further comprises a quick-connection locking piece and a fourth elastic piece, wherein the quick-connection locking piece vertically slides on at least one of the sealing cover, the middle cover and the top cover, and the fourth elastic piece is in compression butt joint between the upper side of the middle cover and the bottom of the quick-connection locking piece; one end of the quick-connection locking piece vertically extends upwards to form a pressing operation part, and the pressing operation part upwards penetrates through and extends out of the top cover; the other end of the quick-connection locking piece extends vertically upwards to form a locking part, and the locking part can be detachably clamped in the locking groove.
7. The fluid pump of any one of claims 1-6, further comprising a fluid-filled dump detection assembly comprising a first top detection column, a second top detection column, a first bottom detection column, and a second bottom detection column, wherein the first top detection column, the second top detection column, the first bottom detection column, and the second bottom detection column are all secured to the seal cap in a vertical direction, wherein the first top detection column and the second top detection column both extend into a top of the fluid collection chamber to a preset position, and wherein the first bottom detection column and the second bottom detection column both extend into a bottom of the fluid collection chamber to a preset position; the first bottom detection column is positioned at the left upper part of the liquid collecting cavity, and the second bottom detection column is positioned at the right upper part of the liquid collecting cavity; the exhaust pipe body is positioned in the middle of the liquid collecting cavity, the first bottom detection column is positioned at the left side of the exhaust pipe, and the second bottom detection column is positioned at the right side of the exhaust pipe; the first top detection column, the second top detection column, the first bottom detection column and the second bottom detection column are all electrically connected to the control circuit device.
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| CN201910423267.4A CN110038172B (en) | 2019-05-21 | 2019-05-21 | Liquid pump |
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| CN201910423267.4A CN110038172B (en) | 2019-05-21 | 2019-05-21 | Liquid pump |
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| CN110038172B true CN110038172B (en) | 2024-05-03 |
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| CN110038172A (en) | 2019-07-23 |
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