Anesthetic gas purification device

Abstract

The utility model relates to the technical field of anesthesia equipment, in particular to an anesthetic gas purification device. Comprising a box body, the box body is communicated with an air inlet assembly, the upper end of the box body is detachably and fixedly connected with an upper cover, the upper cover is fixedly communicated with an air pipe, the lower end of the box body is filled with absorption liquid, and the air outlet end of the air inlet assembly is immersed in the absorption liquid; the inner cylinder above the filter screen is filled with an adsorption material, an inner ring is fixed in the box body below the inner cylinder, the upper end of the inner ring is hermetically connected with the lower end of the inner cylinder, a plugging assembly is arranged in the inner ring, and the plugging assembly can plug the inner ring after the inner cylinder moves upwards. According to the device, the absorption liquid is arranged in the lower end of the box body, gas fed into the box body can be washed by the absorption liquid, and after the gas in the box body passes through the adsorption material, the adsorption material can effectively adsorb other anesthetic vapor and then discharge the vapor.

Description

TECHNICAL FIELD

[0001] The utility model relates to anesthetic equipment technical field, concretely relates to anesthetic gas purification device. BACKGROUND

[0002] The main role of anesthetic gas scavenging system (AGSS) is to reduce and eliminate the pollution of volatile anesthetics and its waste gas to the environment, and to ensure the safety of medical staff and patients. Specifically, it can effectively remove volatile anesthetic waste gas and avoid the accumulation of anesthetic waste gas in indoor air, thereby reducing the health hazards of anesthetic waste gas to medical staff. Anesthetic gas scavenging system is mainly divided into adsorption type and filtration type.

[0003] Adsorption type anesthetic gas scavenging system is mainly composed of a collection pipe and an absorption tank, the absorption tank is filled with activated carbon, and the anesthetic vapor passing through the purification device is adsorbed by activated carbon, and other gases are discharged into the operating room through the outlet of the absorption tank. However, it cannot adsorb nitrous oxide (laughing gas), and is ineffective for environmental pollution caused by nitrous oxide.

[0004] In order to solve the above problems, the patent file with publication number CN212881578U discloses a kind of operating room anesthetic waste gas purifier, adopt suction fan to extract operating room anesthetic waste gas, utilize double-layer composite activated carbon adsorption purification layer and silicon dioxide filter cotton net layer to carry out primary anesthetic waste gas purification filtering, in the lower part of purification tank body, purification comprehensive filter liquid layer is used to carry out comprehensive purification filtering, operating room anesthetic waste gas can be effectively purified and filtered, so that the discharged gas source meets the discharge standard, with the advantages of double-layer composite primary filter and filter liquid layer comprehensive filtering.The purifier filters and adsorbs anesthetic waste gas by placing the adsorption material layer and the filter liquid layer at the top and bottom of the tank body respectively, but the absorption capacity of the adsorption material will decrease with the increase of the processing capacity, and the integrated tank body is difficult to replace the adsorption material in time, which may reduce the absorption capacity and the waste gas treatment efficiency.

[0005] In order to solve the defects of the technical solutions of the above patent documents, the patent document with publication number CN219002582U discloses an anesthetic waste gas purification device, which is characterized in that one end of the air inlet pipe is connected to the anesthetic waste gas discharge port, the anesthetic waste gas filtering liquid is poured into the gas collecting hopper, the waste liquid enters the inside of the purification tank through the gas guide pipe, the liquid level is kept higher than the opening at the bottom end of the gas guide pipe and lower than the communication position of the air outlet pipe and the purification tank, the air-permeable dense gauze is laid on the air-permeable net, and the active carbon and other adsorbing materials are layered and laid on the gauze, the tank body is placed into the inside of the purification tank through the engagement and sliding installation between the two side sealing limiting blocks through the sliding groove and sliding rail, the cover plate is closed, the cover plate is sealingly engaged in the taking and placing opening, the fan fixedly installed on the inner wall of the air inlet pipe is started to extract the anesthetic waste gas, the waste gas enters the inside of the purification tank through the air inlet pipe, the fan on the installation ring is started to make the waste gas form turbulent flow and fully contact with the adsorbing materials, and the waste gas flows downward into the gas collecting hopper, enters the inside of the purification tank through the gas guide pipe, contacts and neutralizes with the filtering liquid, and the neutralized waste gas rises and separates from the filtering liquid, and the collection device sleeved at one end of the air outlet pipe extracts and collects the waste gas in the inside of the purification tank. Content of the utility model

[0006] The main purpose of the utility model is to provide an anesthetic gas purification device which is convenient to disassemble and assemble the inner cylinder, convenient to replace the adsorbing materials, can guarantee the sealing performance of the inner cylinder and the tank body, and can avoid impurities from falling into the tank body after the inner cylinder is taken out.

[0007] In order to achieve the above purpose, the utility model provides a technical scheme:

[0008] An anesthetic gas purification device, comprising a tank body, the tank body is communicated with an air inlet assembly, the upper end of the tank body is detachably and fixedly connected with an upper cover, the upper cover is fixedly provided with an air pipe, the air pipe is communicated with the inside of the tank body, the lower end of the tank body is filled with an absorbing liquid, the air outlet end of the air inlet assembly is immersed in the absorbing liquid, the upper part of the tank body is detachably and fixedly and sealingly connected with an inner cylinder, the upper end of the inner cylinder is open, the lower end of the inner cylinder is provided with a rectangular hole, a filter screen is fixedly arranged in the rectangular hole, the inner cylinder above the filter screen is filled with adsorbing materials, an inner ring is fixedly arranged in the tank body below the inner cylinder, the upper end of the inner ring is sealingly connected with the lower end of the inner cylinder, a plugging assembly is arranged in the inner ring, and the plugging assembly can plug the inner ring after the inner cylinder moves upward.

[0009] Specifically, the air inlet assembly comprises a fan fixedly arranged on the outer side of the tank body, the air outlet end of the fan is communicated with one end of an inlet pipe, the inlet pipe is fixedly arranged on the tank body, and the other end of the inlet pipe extends into the absorbing liquid in the lower end of the tank body.

[0010] Specifically, the upper end of the inner ring is fixedly and sealingly connected with a sealing ring, and the lower end of the inner cylinder is sealingly connected with the sealing ring.

[0011] Specific, the adsorption material includes sponge layer at the lower end of the inner cylinder, the inner cylinder above the sponge layer is filled with activated carbon layer, and the inner cylinder above the activated carbon layer is filled with silica filter cotton layer.

[0012] Specific, the plugging assembly includes an inner rod fixed on the inner side of the inner ring, a vertical rod elastically and slidably arranged at the center of the inner rod, a top plate fixed on the upper end of the vertical rod, and a sealing plate fixed on the lower end of the vertical rod, the filter screen in the lower end of the inner cylinder abuts against the top plate, and the sealing plate and the lower end of the inner ring have a gas passing gap.

[0013] Specific, the spring is sleeved on the vertical rod between the inner rod and the top plate in the inner ring.

[0014] Specific, the inner cylinder is provided with a handle on the upper end of the inner cylinder, the handle includes an inner straight part, the front and rear sides of the inner straight part are provided with outer straight parts parallel to the inner straight part, the inner straight part and the outer straight part are fixedly connected through a connecting part, the two outer straight parts of the handle penetrate the front and rear side walls of the inner cylinder respectively, the two outer straight parts of the handle are rotatably connected with the front and rear side walls of the inner cylinder respectively, the outer straight parts on the outer side of the inner cylinder are concentrically fixed with gears, the front and rear side walls of the box body are provided with vertical grooves corresponding to the gears, vertical racks are fixed on one side of the vertical grooves, the racks are engaged with the gears, the two gears on the front side are located between the two racks on the front side, the two gears on the rear side are located between the two racks on the rear side, a pin is slidably arranged on the connecting part, the pin is parallel to the inner straight part, the pin penetrates the insertion hole on the inner cylinder, and the pin and the inner straight part are connected through a connecting rope.

[0015] Specific, the box body is fixedly and communicatively provided with a discharge pipe at the lower end, the box body below the inner ring is fixedly and communicatively provided with a filling pipe, and the discharge pipe and the filling pipe are provided with valves.

[0016] Compared with the prior art, the device has the advantages that:

[0017] 1、The device is provided with an absorption liquid in the lower end of the box body, so that the gas sent into the box body can be washed by the absorption liquid, and the nitrous oxide can be effectively removed.

[0018] 2、The sponge layer and the silica filter cotton layer are arranged in the inner cylinder below and above the activated carbon layer respectively, so that the fine activated carbon particles can be prevented from falling into the absorption liquid in the box body, and the fine activated carbon particles can be prevented from falling out of the box body.

[0019] 3, the inner straight part of the handle is lifted, the handle rotates under the gravity of the inner cylinder, and the connecting part is in a vertical state. The inner cylinder is placed in the box body, and the gear is entered into the vertical groove, so that the inner cylinder can descend in the box body. When the lower end of the inner cylinder contacts the sealing ring, the gear meshes with the upper end of the rack. Then the inner straight part of the handle is rotated towards the center of the inner cylinder, and under the meshing action of the gear and the rack, the inner cylinder can continue to descend and press the sealing ring. When the inner straight part of the handle is rotated by 90 degrees, the pin rod corresponds to the insertion hole. Then the pin rod can be inserted into the insertion hole to position the handle, at this time the inner cylinder presses the sealing ring, the inner cylinder is sealingly connected with the inner ring through the sealing ring, which can ensure the sealing performance of the inner cylinder and the inner ring, and ensure that the gas entering the box body is effectively purified.

[0020] 4, after the inner cylinder is installed into the box body, the sealing plate can descend, so that the gas in the box body can effectively pass through the adsorption material. After the inner cylinder ascends in the box body, the inner cylinder loses the pressing on the top plate, and the sealing plate blocks the inner ring under the action of the spring. After the inner cylinder is disassembled, impurities are prevented from accidentally entering the absorption liquid in the box body. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic view of the internal structure of the device.

[0022] Figure 2 It is a schematic view of the inner cylinder placed in the box body.

[0023] Figure 3 It is a position relationship diagram of the rack and the gear when the lower end of the inner cylinder contacts the sealing ring.

[0024] Figure 4 It is a schematic view of the handle.

[0025] The names of the parts in the drawings are: 1, box body, 2, inlet pipe, 3, fan, 4, exhaust pipe, 5, filling pipe, 6, inner ring, 7, inner rod, 8, vertical rod, 9, top plate, 10, spring, 11, sealing plate, 12, sealing ring, 13, inner cylinder, 14, filter screen, 15, sponge layer, 16, activated carbon layer, 17, silicon dioxide filter cotton layer, 18, upper cover, 19, air pipe, 20, vertical groove, 21, handle, 211, outer straight part, 212, connecting part, 213, inner straight part, 22, gear, 23, rack, 24, insertion hole, 25, pin rod, 26, connecting rope. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0027] Embodiment one: refer to Figures 1-4As shown in the figure, the device for purifying anesthetic gas comprises a box 1, the lower end of which is filled with absorbing liquid, and the box 1 is connected with an air inlet assembly, the air outlet end of which is immersed in the absorbing liquid.

[0028] The air inlet assembly comprises a fan 3 fixed outside the box 1, the air outlet end of which is connected with one end of an inlet pipe 2, the other end of which is fixed on the box 1 and extends into the absorbing liquid in the lower end of the box 1.

[0029] After the fan 3 is started, the anesthetic gas can be transported into the box 1 by the fan 3 through the inlet pipe 2, and the anesthetic gas discharged from the inlet pipe 2 can be washed by the absorbing liquid in the lower end of the box 1. The absorbing liquid can be alcohol, which can remove the nitrous oxide in the anesthetic gas.

[0030] The lower end of the box 1 is fixedly connected with a discharge pipe 4, and the box 1 below the inner ring 6 is fixedly connected with a filling pipe 5, and valves are installed on the discharge pipe 4 and the filling pipe 5. Opening the valve on the filling pipe 5 can add absorbing liquid to the box 1. Opening the valve on the discharge pipe 4 can discharge the absorbing liquid in the box 1.

[0031] The upper end of the box 1 is detachably fixedly connected with an upper cover 18, and the upper cover 18 is fixedly connected with an air pipe 19, which is connected with the inside of the box 1.

[0032] The inner cylinder 13 is detachably fixedly and sealingly connected in the upper part of the box 1.

[0033] The inner ring 6 is fixed in the box 1 below the inner cylinder 13, and the upper end of the inner ring 6 is sealingly connected with the lower end of the inner cylinder 13. Specifically, the upper end of the inner ring 6 is fixedly and sealingly connected with a sealing ring 12, and the lower end of the inner cylinder 13 is sealingly connected with the sealing ring 12.

[0034] The upper end of the inner cylinder 13 is open, the lower end of the inner cylinder 13 is provided with a rectangular hole, a filter screen 14 is fixed in the rectangular hole, and absorbing material is filled in the inner cylinder 13 above the filter screen 14.

[0035] The absorbing material comprises a sponge layer 15 at the lower end of the inner cylinder 13, an activated carbon layer 16 filled in the inner cylinder 13 above the sponge layer 15, and a silica filter cotton layer 17 filled in the inner cylinder 13 above the activated carbon layer 16.

[0036] By arranging the sponge layer 15 and the silica filter cotton layer 17 below and above the activated carbon layer 16 in the inner cylinder 13 respectively, fine activated carbon particles can be prevented from falling into the absorbing liquid in the box 1, and fine activated carbon particles can also be prevented from being discharged from the box 1.

[0037] The nitrous oxide-removed anesthetic gas can pass through the sponge layer 15, the activated carbon layer 16 and the silica filter cotton layer 17 in turn after ascending in the box 1, and the activated carbon layer 16 and the silica filter cotton layer 17 can adsorb the anesthetic vapor in the anesthetic gas, and the purified gas is discharged from the air pipe 19.

[0038] Embodiment two: on the basis of embodiment one, referring to Figure 1 As shown in the figure, the inner ring 6 is provided with a plugging assembly, and the inner cylinder 13 can plug the inner ring 6 after ascending.

[0039] The plugging assembly comprises an inner rod 7 fixed in the inner side of the inner ring 6, a vertical rod 8 elastically and slidingly arranged in the center of the inner rod 7, a top plate 9 fixed on the upper end of the vertical rod 8, and a spring 10 sleeved on the vertical rod 8 between the inner rod 7 and the top plate 9. The lower end of the vertical rod 8 is fixed with a sealing plate 11, and the filter screen 14 at the lower end of the inner cylinder 13 abuts against the top plate 9, and the sealing plate 11 has a gas passing gap with the lower end of the inner ring 6.

[0040] After the inner cylinder 13 is installed in the box 1, the sealing plate 11 can be made to descend by the top plate 9 and the vertical rod 8. At the same time, the spring 10 is compressed. The sealing plate 11 descends and separates from the inner ring 6, so that the sealing plate 11 has a gas passing gap with the lower end of the inner ring 6, thereby ensuring that the gas entering the box 1 can pass through the gas passing gap and pass through the adsorption material.

[0041] After the inner cylinder 13 ascends in the box 1, the inner cylinder 13 loses the extrusion on the top plate 9, and the top plate 9, the vertical rod 8 and the sealing plate 11 ascend under the action of the spring 10. The sealing plate 11 ascends and plugs the inner ring 6, and after the inner cylinder 13 is disassembled, it prevents impurities from accidentally entering the absorption liquid in the box 1.

[0042] Embodiment three: on the basis of embodiment one, referring to Figures 1-4 As shown in the figure, the left and right sides of the upper end of the inner cylinder 13 are rotatably provided with a handle 21.

[0043] The handle 21 comprises an inner straight part 213, the front and rear sides of the inner straight part 213 are provided with outer straight parts 211 parallel to the inner straight part 213, and the inner straight part 213 and the outer straight parts 211 are fixedly connected through a connecting part 212. When the inner straight part 213 is rotated, the inner straight part 213 can drive the outer straight parts 211 on the front and rear sides thereof to rotate through the connecting part 212.

[0044] The two outer straight parts 211 of the handle 21 respectively penetrate the front and rear side walls of the inner cylinder 13, and the two outer straight parts 211 of the handle 21 are respectively rotatably connected with the front and rear side walls of the inner cylinder 13.

[0045] The outer straight parts 211 on the outer side of the inner cylinder 13 are concentrically fixed with a gear 22. When the outer straight parts 211 rotate, the gears 22 thereon rotate.

[0046] The vertical slots 20 corresponding to the gear wheels 22 are formed in the front and rear side walls of the box body 1, and vertical racks 23 are fixed to one side of the vertical slots 20.

[0047] The two gear wheels 22 on the front side are located between the two racks 23 on the front side. The two gear wheels 22 on the rear side are located between the two racks 23 on the rear side. When the inner flat part 213 rotates towards the center of the inner cylinder 13, the gear wheels 22 can move downwards during rotation due to the engagement of the gear wheels 22 and the racks 23, and the racks 23 are fixed in the vertical slots 20.

[0048] The pin rod 25 is slidably arranged on the connecting part 212, and the pin rod 25 is parallel to the inner flat part 213 and penetrates the insertion hole 24 on the inner cylinder 13. The cooperation of the pin rod 25 and the insertion hole 24 can position the rotating handle 21.

[0049] The pin rod 25 is connected to the inner flat part 213 through the connecting rope 26. The connecting rope 26 can prevent the pin rod 25 from being lost.

[0050] After the inner flat part 213 of the rotating handle 21 is lifted, the rotating handle 21 rotates under the gravity of the inner cylinder 13, and the connecting part 212 is in a vertical state.

[0051] The inner cylinder 13 is placed into the box body 1, and the gear wheels 22 are arranged in the vertical slots 20, so that the inner cylinder 13 can move downwards in the box body 1.

[0052] When the lower end of the inner cylinder 13 contacts the sealing ring 12, the gear wheels 22 engage with the upper ends of the racks 23. Then, the inner flat part 213 of the rotating handle 21 rotates towards the center of the inner cylinder 13, and the inner cylinder 13 can continue to move downwards and press the sealing ring 12 under the engagement of the gear wheels 22 and the racks 23.

[0053] When the inner flat part 213 of the rotating handle 21 rotates by 90 degrees, the pin rod 25 corresponds to the insertion hole 24. Then, the pin rod 25 is inserted into the insertion hole 24 to position the rotating handle 21, so that the pressing force of the inner cylinder 13 on the sealing ring 12 does not disappear. At this time, the inner cylinder 13 presses the sealing ring 12, and the inner cylinder 13 is sealingly connected to the inner ring 6 through the sealing ring 12, so as to ensure the sealing performance of the inner cylinder 13 and the inner ring 6, and ensure the effective purification of the gas entering the box body 1.

[0054] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An anesthetic gas purifying device, comprising a box body (1) in communication with an air inlet assembly, a top cover (18) detachably fixed to the upper end of the box body (1), a wind pipe (19) fixed to the top cover (18) and in communication with the inside of the box body (1), characterized in that, The lower end of the box (1) is filled with absorption liquid, the air outlet end of the air inlet assembly is immersed in the absorption liquid, the upper part of the box (1) is detachably and sealingly connected with an inner cylinder (13), the upper end of the inner cylinder (13) is open, the lower end of the inner cylinder (13) is provided with a rectangular hole, the rectangular hole is fixed with a filter screen (14), the inner cylinder (13) above the filter screen (14) is filled with adsorption material, the lower part of the box (1) is fixed with an inner ring (6), the upper end of the inner ring (6) is sealingly connected with the lower end of the inner cylinder (13), the inner ring (6) is provided with a plugging assembly, and the plugging assembly can plug the inner ring (6) when moving upwards.

2. The anesthetic gas scavenging apparatus of claim 1, wherein The air inlet assembly comprises a fan (3) fixed outside the box (1), the air outlet end of the fan (3) is communicated with one end of an inlet pipe (2), the inlet pipe (2) is fixed on the box (1), and the other end of the inlet pipe (2) extends into the box (1) and is located in the absorption liquid in the lower end of the box (1).

3. The anesthetic gas scavenging apparatus of claim 1, wherein The upper end of the inner ring (6) is fixed and sealingly connected with a sealing ring (12), and the lower end of the inner cylinder (13) is sealingly connected with the sealing ring (12).

4. The anesthetic gas scavenging apparatus of claim 1, wherein The adsorption material comprises a sponge layer (15) located at the lower end of the inner cylinder (13), the inner cylinder (13) above the sponge layer (15) is filled with an activated carbon layer (16), and the inner cylinder (13) above the activated carbon layer (16) is filled with a silica filter cotton layer (17).

5. The anesthetic gas scavenging apparatus of claim 1, wherein The plugging assembly comprises an inner rod (7) fixed inside the inner ring (6), the inner rod (7) is elastically and slidingly provided with a vertical rod (8) at the center, the upper end of the vertical rod (8) is fixed with a top plate (9), the lower end of the vertical rod (8) is fixed with a sealing plate (11), the filter screen (14) in the lower end of the inner cylinder (13) abuts against the top plate (9), and the sealing plate (11) and the lower end of the inner ring (6) have an air gap.

6. The anesthetic gas scavenging apparatus of claim 5, wherein The vertical rod (8) between the inner rod (7) in the top plate (9) is sleeved with a spring (10).

7. The anesthetic gas scavenging apparatus of claim 1, wherein The left and right sides of the upper end of the inner cylinder (13) are rotatably provided with handles (21), the handle (21) comprises an inner straight portion (213), the front and rear sides of the inner straight portion (213) are provided with outer straight portions (211) parallel thereto, the inner straight portion (213) and the outer straight portion (211) are fixedly connected through a connecting portion (212), the two outer straight portions (211) of the handle (21) penetrate the front and rear side walls of the inner cylinder (13) respectively, the two outer straight portions (211) of the handle (21) are rotatably connected with the front and rear side walls of the inner cylinder (13) respectively, the outer straight portions (211) on the outer side of the inner cylinder (13) are fixedly provided with gears (22) concentrically, the inner sides of the front and rear side walls of the box body (1) are provided with vertical grooves (20) corresponding to the gears (22), the vertical grooves (20) are fixedly provided with vertical racks (23) on one side, the racks (23) are engaged with the gears (22), the two gears (22) on the front side are located between the two racks (23) on the front side, the two gears (22) on the rear side are located between the two racks (23) on the rear side, the connecting portion (212) is slidably provided with a pin rod (25), the pin rod (25) is parallel to the inner straight portion (213), the pin rod (25) penetrates the insertion hole (24) on the inner cylinder (13), and the pin rod (25) and the inner straight portion (213) are connected through a connecting rope (26).

8. The anesthetic gas scavenging apparatus of claim 1, wherein The lower end of the box body (1) is fixedly and communicatively provided with a discharge pipe (4), the lower end of the box body (1) is fixedly and communicatively provided with a filling pipe (5), and the discharge pipe (4) and the filling pipe (5) are provided with valves.

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