Toilet negative ion air curtain deodorization circulation airway system

Abstract

The present invention discloses a toilet negative ion air curtain deodorization circulation air duct system, which includes a sitting toilet. An activated carbon deodorization device is installed in the tail box of the toilet pit of the sitting toilet; the activated carbon deodorization device includes a gas ejection pipe and a negative pressure suction pipe. The jet end of the gas ejection pipe and the suction end of the negative pressure suction pipe are far away from each other and respectively correspond to the tails of the two inner side walls of the toilet pit; the gas jet ejected from the jet end of the gas ejection pipe is turned back in a circle under the constraint of the inner contour of the toilet pit and then is re-sucked into the activated carbon deodorization device by the suction end of the negative pressure suction pipe; thereby forming a continuous turning-back air flow in the toilet pit; and it can solve the problems of uneven odor absorption and inactivation of activated carbon.

Description

Technical Field

[0001] The present invention belongs to the field of toilet deodorization. Background Art

[0002] The sitting toilet itself plays a certain role in odor isolation. When a person sits on the sitting toilet, the buttocks play a role of covering. Under the covering action of the buttocks, a relatively independent space is formed in the toilet pit. The feces temporarily accumulated at the bottom of the toilet pit continuously diffuse odor molecules into the toilet pit, thus causing the accumulation of odor molecules. The toilet pit is not completely closed under the covering action of the buttocks, so the user can smell the odor.

[0003] Generally, a toilet with a deodorizing function has only one deodorizing air suction port at the tail of the toilet pit. The volume of the toilet pit is relatively large. During the working process of the activated carbon deodorizing device with only one air suction port, it can only effectively absorb the odor in the local area of the air suction port, and the absorption capacity for the odor molecules far away from the air suction port is limited. Therefore, there is a problem of low uniformity in absorbing the odor in the toilet pit.

[0004] During the deodorization process, activated carbon is used to absorb odor molecules. Activated carbon itself is a consumable. Over time, the activated carbon will eventually fail. Therefore, many toilets have good deodorizing effects when they are newly bought, but the effects become unsatisfactory after a long time, which is all due to the failure of the activated carbon. Summary of the Invention

[0005] Object of the Invention: In order to overcome the deficiencies existing in the prior art, the present invention provides a toilet negative ion air curtain deodorizing circulation air duct system, which can solve the problems of uneven odor absorption and activated carbon failure.

[0006] Technical Solution: To achieve the above object, the toilet negative ion air curtain deodorizing circulation air duct system of the present invention includes a sitting toilet, and an activated carbon deodorizing device is installed in the tail box of the toilet pit of the sitting toilet.

[0007] The activated carbon deodorizing device includes a gas ejection pipe and a negative pressure suction pipe. The gas ejection end of the gas ejection pipe and the suction end of the negative pressure suction pipe are far away from each other and respectively correspond to the two inner side walls at the tail of the toilet pit. The gas jet ejected from the gas ejection end of the gas ejection pipe folds back in a circle under the constraint of the inner contour of the toilet pit and is then re-sucked into the activated carbon deodorizing device by the suction end of the negative pressure suction pipe. Thus, a continuous folded-back air flow is formed in the toilet pit.

[0008] Furthermore, the activated carbon deodorizing device includes an outer shell of the activated carbon circulating air duct. A disc-shaped inner shell is arranged inside the outer shell of the activated carbon circulating air duct. An activated carbon odor filtering unit is rotatably arranged in the disc-shaped inner shell. A number of activated carbon filling bins are arranged on the activated carbon odor filtering unit. The rotation of the activated carbon odor filtering unit can make each activated carbon filling bin sequentially correspond to and communicate with the air outlet end of the upper part of the negative pressure suction pipe. The channel in the negative pressure suction pipe trends downward, so that the activated carbon particles entering the channel in the negative pressure suction pipe will automatically slide down under the action of gravity. When any activated carbon filling bin on the activated carbon odor filtering unit communicates with the air outlet end of the negative pressure suction pipe, the activated carbon particles filled in the activated carbon filling bin connected to the air outlet end of the negative pressure suction pipe leak into the toilet pit through the negative pressure suction pipe under the action of gravity.

[0009] Furthermore, a negative ion generating chamber is arranged between the outer shell of the activated carbon circulating air duct and the disc-shaped inner shell. A negative ion generator is arranged in the negative ion generating chamber.

[0010] Furthermore, the air inlet end of the gas ejection pipe communicates with the negative ion generating chamber. An axial flow fan is arranged in the gas ejection pipe. When the axial flow fan in the gas ejection pipe operates, gas is ejected from the gas ejection end of the gas ejection pipe, and a negative pressure is generated in the negative ion generating chamber.

[0011] Furthermore, the activated carbon odor filtering unit includes an annular disc. The upper surface of the annular disc is slidably matched with the lower surface of the upper wall of the disc-shaped inner shell. A number of vertically penetrating activated carbon adsorption cylinders are integrally arranged in a circumferential array on the lower surface of the annular disc. The lower end surfaces of the activated carbon adsorption cylinders are slidably matched with the upper surface of the lower wall of the disc-shaped inner shell. Each activated carbon adsorption cylinder is an activated carbon filling bin, and activated carbon particles are filled in the activated carbon filling bin; The activated carbon filling bins between any two adjacent activated carbon adsorption cylinders are interconnected by arc-shaped one-way air ducts.

[0012] Furthermore, gas one-way valves are arranged in the air guide channels of the arc-shaped one-way air ducts. The gas one-way valves make the gas in each arc-shaped one-way air duct can only flow in the clockwise direction, so that the activated carbon odor filtering unit forms a closed-loop communication structure in the clockwise direction;

[0013] An activated carbon storage tank body is integrally arranged on the outer shell of the activated carbon circulating air duct. Activated carbon particles are filled in the activated carbon storage bin in the activated carbon storage tank body. The lower end of the activated carbon storage tank body is connected with a vertically penetrating activated carbon feeding tube. The lower end contour of the activated carbon feeding tube is integrally connected to the upper wall. A number of gas overflow holes are evenly distributed in a hollow manner on the side wall of the activated carbon feeding tube; When the lower end of any activated carbon filling bin communicates with the air outlet end of the negative pressure suction pipe, the lower end of the activated carbon feeding tube just coaxially communicates with the upper end of another activated carbon filling bin.

[0014] Furthermore, it also includes a central driving shaft coaxial with the annular disk, and the central driving shaft is fixedly connected to each activated carbon adsorption cylinder through a connecting rod.

[0015] Furthermore, the connection point between the arc-shaped one-way air guide pipe and the activated carbon filling bin is connected through a plurality of mesh holes that are impermeable to the activated carbon particles.

[0016] Beneficial effects: The gas jet ejected from the jet end of the gas ejection pipe of the present invention is re-absorbed into the activated carbon deodorization device by the suction end of the negative pressure suction pipe after being turned back once under the constraint of the inner contour of the toilet pit; thereby forming a continuous re-entry airflow in the toilet pit; the odorous gas molecules generated by the feces at the bottom of the toilet pit will be continuously entrained in the continuous re-entry circulating airflow formed in the toilet pit, and each cycle of the continuous re-entry circulating airflow formed in the toilet pit will be absorbed by the activated carbon of the activated carbon deodorization device, so the odor molecules in the continuous re-entry circulating airflow formed in the toilet pit will be continuously absorbed, thereby suppressing the escape of the odor molecules, which can also be called the "wind curtain air shield" effect;

[0017] At the same time, it also plays a role in renewing the activated carbon. When the toilet is used for a predetermined period of time, the activated carbon in the second activated carbon filling bin will fail first, and the motor will be controlled to rotate the activated carbon odor filtering unit 90° counterclockwise as a whole under the transmission of the output gear and the transmission gear; so that the lower end of the second activated carbon filling bin is just connected to the air outlet end of the negative pressure suction pipe, and the upper end of the first activated carbon filling bin is just connected to the lower end of the inner cavity of the activated carbon discharge barrel; at this time, the activated carbon particles originally filled in the second activated carbon filling bin automatically slide down through the channel in the downward-trending negative pressure suction pipe under the action of gravity, and finally exit from the negative pressure suction pipe. The air suction end of the air pipe leaks downward into the toilet pit and is discharged into the sewer when the toilet is drained next time; at the same time, the activated carbon particles in the inner cavity of the activated carbon discharge barrel leak down into the first activated carbon filling bin under the action of gravity until the first activated carbon filling bin is fully filled with activated carbon. At the same time, fresh activated carbon particles in the activated carbon storage bin are added to the inner cavity of the activated carbon discharge barrel; at this point, an activated carbon renewal is completed, and the structure is restored to its initial state. In the next deodorization process, fresh activated carbon will participate in the adsorption of odor, thereby extending the service life of the deodorization system and the sustainability of the deodorization effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 Schematic diagram of the air shield curtain formed by the gas recirculation in the toilet pit;

[0019] Attached Figure 2 It is a first cross-sectional view of an activated carbon deodorization device;

[0020] Attached Figure 3 is a second cross-sectional view of the activated carbon deodorization device;

[0021] Attached Figure 4Schematic diagram of the upward view of the activated carbon deodorizing device;

[0022] Attached Figure 5 Cross-sectional view of the activated carbon deodorizing device in a disassembled state;

[0023] Attached Figure 6 Schematic diagram of the activated carbon deodorizing device with the activated carbon odor filtering unit hidden;

[0024] Attached Figure 7 Schematic diagram of the activated carbon odor filtering unit;

[0025] Attached Figure 8 Attached Figure 7 Cross-sectional view of Specific embodiments

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] As shown in the attached Figures 1 to 8 The toilet negative ion air curtain deodorizing circulation airway system, as Figure 1 including a sitting toilet, an activated carbon deodorizing device 4 is installed in the tail box of the toilet pit 7 of the sitting toilet; the activated carbon deodorizing device 4 includes a gas ejection pipe 9 and a negative pressure suction pipe 8, the jet end 13 of the gas ejection pipe 9 and the suction end 12 of the negative pressure suction pipe 8 are far away from each other and respectively correspond to the two inner side wall tails of the toilet pit 7; the gas jet ejected from the jet end 13 of the gas ejection pipe 9 is turned back in a circle under the constraint of the inner contour of the toilet pit 7 and then is re-sucked into the activated carbon deodorizing device 4 by the suction end 12 of the negative pressure suction pipe 8; thereby forming a continuous turning-back air flow in the toilet pit 7; the odor gas molecules generated by the feces at the bottom of the toilet pit 7 will be continuously entrained in the continuous turning-back circulation air flow formed in the toilet pit 7, and each cycle of the continuous turning-back circulation air flow formed in the toilet pit 7 has to pass through the activated carbon absorption of the activated carbon deodorizing device 4, so the odor molecules in the continuous turning-back circulation air flow formed in the toilet pit 7 will be continuously absorbed, thereby inhibiting the escape of odor molecules, which can also be called the "air curtain gas shield" effect; as Figure 1 shown; avoiding that ordinary deodorizing devices have only one suction port and can only absorb odor in a local area near the suction port during the working process, and have limited absorption ability for odor molecules far away from the suction port;

[0028] As Figure 2 、 3, 4, 5, 6; The activated carbon deodorization device 4 includes an activated carbon circulation airway housing 10. Inside the activated carbon circulation airway housing 10, a disc-shaped inner housing 16 is provided. An activated carbon odor filtration unit 5 is rotatably arranged in the disc-shaped inner housing 16. A number of activated carbon filling bins 1 are provided on the activated carbon odor filtration unit 5. The rotation of the activated carbon odor filtration unit 5 enables each activated carbon filling bin 1 to be successively and correspondingly connected to the air outlet end of the upper part of the negative pressure suction pipe 8. The channel in the negative pressure suction pipe 8 trends downward, so that the activated carbon particles in the channel of the negative pressure suction pipe 8 will automatically slide down under the action of gravity. When any activated carbon filling bin on the activated carbon odor filtration unit 5 is connected to the air outlet end of the negative pressure suction pipe 8, the activated carbon particles filled in the activated carbon filling bin 1 connected to the air outlet end of the negative pressure suction pipe 8 leak into the toilet pit 7 through the negative pressure suction pipe 8 under the action of gravity.

[0029] Between the activated carbon circulation airway housing 10 and the disc-shaped inner housing 16 is a negative ion generation chamber 15, and a negative ion generator is provided in the negative ion generation chamber 15.

[0030] The air inlet end of the gas ejection pipe 9 is connected to the negative ion generation chamber 15. An axial flow fan is provided in the gas ejection pipe 9. When the axial flow fan in the gas ejection pipe 9 operates, the gas ejection end 13 of the gas ejection pipe 9 ejects gas and creates a negative pressure in the negative ion generation chamber 15.

[0031] The activated carbon odor filtration unit 5 includes a coaxial annular disc 14 and a central drive shaft 23. The upper surface of the annular disc 14 is in sliding fit with the lower surface of the upper wall 16.1 of the disc-shaped inner housing 16. The lower surface of the annular disc 14 is integrally provided with a number of vertically penetrating activated carbon adsorption cylinders 2 in a circumferential array. The lower end surfaces of the activated carbon adsorption cylinders 2 are in sliding fit with the upper surface of the lower wall 16.2 of the disc-shaped inner housing 16. The central drive shaft 23 is fixedly connected to each activated carbon adsorption cylinder 2 through a connecting rod 21. Inside each activated carbon adsorption cylinder 2 is an activated carbon filling bin 1, and activated carbon particles are filled in the activated carbon filling bin 1; between any two adjacent activated carbon adsorption cylinders 2, the two activated carbon filling bins 1 are interconnected through an arc-shaped one-way air duct 3; the axes of the arc-shaped one-way air ducts 3 coincide with the axis of the central drive shaft 23, and a gas one-way valve is provided in the air duct of each arc-shaped one-way air duct 3. The gas one-way valve enables the gas in each arc-shaped one-way air duct 3 to flow only in the clockwise direction, so that the activated carbon odor filtration unit 5 forms a closed-loop communication structure in the clockwise direction; as Figure 8 (The annular disc 14 is hidden);

[0032] An activated carbon storage tank body 11 is integrally provided on the activated carbon circulation airway housing 10, as Figure 3, the activated carbon storage bin 19 in the activated carbon storage tank 11 is filled with activated carbon particles. The lower end of the activated carbon storage tank 11 is connected to an activated carbon feeding tube 18 that penetrates up and down. The lower end contour of the activated carbon feeding tube 18 is integrally connected to the upper wall 16.1. A number of gas overflow holes 17 are evenly distributed in a hollow manner on the side wall of the activated carbon feeding tube 18;

[0033] When the air outlet end of the negative pressure suction pipe 8 is connected to the lower end of any one of the activated carbon filling bins 1, the lower end of the activated carbon feeding tube 18 is just coaxially connected to the upper end of another activated carbon filling bin 1;

[0034] The connection between the arc-shaped one-way air duct 3 and the activated carbon filling bin 1 is connected through a number of mesh holes 20 that cannot penetrate the activated carbon particles;

[0035] A motor 41 is fixedly installed on the activated carbon circulation air duct housing 10. The output end of the motor 41 is drivingly connected to an output gear 42. The output gear 42 is meshed with a transmission gear 22. The transmission gear 22 is coaxially fixedly connected to a central drive shaft 23;

[0036] Such as Figure 7 , 8 ; A number of activated carbon adsorption cylinders 2 include a first activated carbon adsorption cylinder 2.1, a second activated carbon adsorption cylinder 2.2, a third activated carbon adsorption cylinder 2.3, and a fourth activated carbon adsorption cylinder 2.4 that are circumferentially arrayed; inside the first activated carbon adsorption cylinder 2.1, the second activated carbon adsorption cylinder 2.2, the third activated carbon adsorption cylinder 2.3, and the fourth activated carbon adsorption cylinder 2.4 are the first activated carbon filling bin 1.1, the second activated carbon filling bin 1.2, the third activated carbon filling bin 1.3, and the fourth activated carbon filling bin 1.4 respectively; the four arc-shaped one-way air ducts 3 are the first arc-shaped one-way air duct 3.1, the second arc-shaped one-way air duct 3.2, the third arc-shaped one-way air duct 3.2, and the fourth arc-shaped one-way air duct 3.4 respectively;

[0037] Working principle:

[0038] Factory state:

[0039] In the initial state, the activated carbon storage bin 19 is filled with activated carbon particles. The first activated carbon filling bin 1.1 is not filled with activated carbon particles and is in a cavity state. The second activated carbon filling bin 1.2, the third activated carbon filling bin 1.3, and the fourth activated carbon filling bin 1.4 are all filled with activated carbon particles; and in the initial state, the lower end of the first activated carbon filling bin 1.1 is connected to the air outlet end of the negative pressure suction pipe 8; at the same time, the lower end of the activated carbon feeding tube 18 is connected to the upper end of the fourth activated carbon filling bin 1.4;

[0040] Working principle of the deodorization function:

[0041] When a person sits on the sitting toilet, the buttocks play a role in covering. A relatively independent space is formed in the toilet pit 7 under the covering action of the buttocks. The feces temporarily accumulated at the bottom of the toilet pit 7 continuously diffuse odor molecules into the toilet pit 7. When the deodorization program is started, the axial flow fan in the gas ejection pipe 9 operates. The axial flow fan in the gas ejection pipe 9 causes the gas ejection end 13 of the gas ejection pipe 9 to eject gas and creates a negative pressure in the negative ion generation chamber 15. The "gas path" through which the gas near the air intake end 12 of the negative pressure air intake pipe 8 flows successively under the action of the negative pressure transmission in the negative ion generation chamber 15 is: air intake end 12, negative pressure air intake pipe 8, the first activated carbon filling chamber 1.1, the second activated carbon filling chamber 1.2, the third activated carbon filling chamber 1.3, the fourth activated carbon filling chamber 1.4, the inner cavity of the activated carbon feeding cylinder 18, each gas overflow hole 17, the negative ion generation chamber 15, the gas ejection pipe 9 and finally is ejected into the toilet pit 7 through the gas ejection end 13;

[0042] Since the gas one-way valve makes the gas in each arc-shaped one-way guide pipe 3 can only flow in the clockwise direction, the gas in the first activated carbon filling chamber 1.1 cannot directly enter the fourth activated carbon filling chamber 1.4 along the "shortcut" of the fourth arc-shaped one-way guide pipe 3.4 in the counterclockwise direction. Therefore, the above "gas path" is the only path, ensuring the certainty of the gas path of the multi-stage adsorption that needs to be explained later;

[0043] Since the second activated carbon filling chamber 1.2, the third activated carbon filling chamber 1.3, the fourth activated carbon filling chamber 1.4 and the inner cavity of the activated carbon feeding cylinder 18 are all filled with activated carbon particles; therefore, during the above "gas path" process, when the gas flows through the second activated carbon filling chamber 1.2, the third activated carbon filling chamber 1.3, the fourth activated carbon filling chamber 1.4 and the inner cavity of the activated carbon feeding cylinder 18 in sequence, it is successively subjected to the first-stage odor adsorption, the second-stage odor adsorption, the third-stage odor adsorption and the fourth-stage odor adsorption;

[0044] During the above process, the gas jet ejected from the gas ejection end 13 of the gas ejection pipe 9 is turned back in a circle under the constraint of the inner contour of the toilet pit 7 and then is re-sucked into the activated carbon deodorization device 4 by the air intake end 12 of the negative pressure air intake pipe 8; thus, a continuous turning-back air flow is formed in the toilet pit 7. The odor gas molecules generated by the feces at the bottom of the toilet pit 7 will be continuously wrapped in the continuous turning-back circulating air flow formed in the toilet pit 7, and the continuous turning-back circulating air flow formed in the toilet pit 7 needs to be absorbed by the activated carbon in the activated carbon deodorization device 4. Therefore, the odor molecules in the continuous turning-back circulating air flow formed in the toilet pit 7 will be continuously absorbed, thereby inhibiting the accumulation and escape of odor molecules, which can also be called the "air curtain air shield" effect; at the same time, the negative ions generated by the negative ion generator also have a certain inhibitory effect on the odor molecules;

[0045] Since the gas is adsorbed step by step in the clockwise direction in the activated carbon odor filtration unit 5, the activated carbon in the second activated carbon filling bin 1.2, which is the first-stage odor adsorption, has the fastest failure rate. Over time, the activated carbon in the second activated carbon filling bin 1.2 fails first and needs to be discarded after being used for a long enough time.

[0046] Process of discarding the failed activated carbon and filling fresh activated carbon:

[0047] When the toilet is used for a predetermined period, the activated carbon in the second activated carbon filling bin 1.2 fails first. Control the motor 41, and under the transmission of the output gear 42 and the transmission gear 22, rotate the activated carbon odor filtration unit 5 counterclockwise by 90° as a whole; make the lower end of the second activated carbon filling bin 1.2 just communicate with the air outlet end of the negative pressure suction pipe 8, and the upper end of the first activated carbon filling bin 1.1 just communicate with the lower end of the inner cavity of the activated carbon feeding cylinder 18; at this time, the activated carbon particles originally filled in the second activated carbon filling bin 1.2 automatically slide down through the channel in the downward-trending negative pressure suction pipe 8 under the action of gravity, and finally leak out from the suction end 12 of the negative pressure suction pipe 8 into the toilet pit 7 and are discharged into the sewer during the next toilet flushing; at the same time, the activated carbon particles in the inner cavity of the activated carbon feeding cylinder 18 leak into the first activated carbon filling bin 1.1 under the action of gravity until the first activated carbon filling bin 1.1 is fully filled with activated carbon. At the same time, fresh activated carbon particles in the activated carbon storage bin 19 are replenished into the inner cavity of the activated carbon feeding cylinder 18; thus, one update of the activated carbon is completed, and the structure returns to the initial state. During the next deodorization process, fresh activated carbon participates in adsorbing odors, thereby extending the service life of this deodorization system and the persistence of the deodorization effect.

[0048] When the activated carbon needs to be updated next time, just rotate the activated carbon odor filtration unit 5 counterclockwise by 90° as a whole. According to the above rule, every time the activated carbon odor filtration unit 5 rotates counterclockwise by 90°, an activated carbon update cycle is completed until the fresh activated carbon particles in the activated carbon storage bin 19 are completely consumed.

[0049] The above is only the preferred implementation mode of the present invention. It should be pointed out that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and retouches can still be made, and these improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. Toilet negative ion air curtain deodorization circulation airway system, including a sitting toilet, an activated carbon deodorization device (4) is installed in the tail box of the toilet pit (7) of the sitting toilet; It is characterized in that: The activated carbon deodorization device (4) includes a gas ejection pipe (9) and a negative pressure suction pipe (8). The gas ejection end (13) of the gas ejection pipe (9) and the suction end (12) of the negative pressure suction pipe (8) are far away from each other and respectively correspond to the tails of the two inner side walls of the toilet pit (7). The gas jet ejected from the gas ejection end (13) of the gas ejection pipe (9) turns back in a circle under the constraint of the inner contour of the toilet pit (7) and is re - inhaled into the activated carbon deodorization device (4) by the suction end (12) of the negative pressure suction pipe (8). Thus, a continuous turning - back air flow is formed in the toilet pit (7); The activated carbon deodorization device (4) includes an activated carbon circulation airway housing (10). A disc - shaped inner housing (16) is arranged in the activated carbon circulation airway housing (10). An activated carbon odor filtering unit (5) is rotatably arranged in the disc - shaped inner housing (16). A number of activated carbon filling bins (1) are arranged on the activated carbon odor filtering unit (5). The rotation of the activated carbon odor filtering unit (5) can make each activated carbon filling bin (1) sequentially correspond to and communicate with the air outlet end of the upper part of the negative pressure suction pipe (8). The channel in the negative pressure suction pipe (8) trends downward. Thus, the activated carbon particles entering the channel in the negative pressure suction pipe (8) will automatically slide down under the action of gravity. When any activated carbon filling bin on the activated carbon odor filtering unit (5) communicates with the air outlet end of the negative pressure suction pipe (8), the activated carbon particles filled in the activated carbon filling bin (1) connected to the air outlet end of the negative pressure suction pipe (8) leak into the toilet pit (7) through the negative pressure suction pipe (8) under the action of gravity.

2. The toilet negative ion air curtain deodorizing circulation airway system according to claim 1, wherein: Between the activated carbon circulation airway housing (10) and the disc - shaped inner housing (16) is a negative ion generation chamber (15). A negative ion generator is arranged in the negative ion generation chamber (15).

3. The toilet negative ion air curtain deodorization circulation airway system according to claim 2, wherein: The air inlet end of the gas ejection pipe (9) communicates with the negative ion generation chamber (15). An axial - flow fan is arranged in the gas ejection pipe (9). When the axial - flow fan in the gas ejection pipe (9) operates, the gas ejection end (13) of the gas ejection pipe (9) ejects gas and makes a negative pressure generated in the negative ion generation chamber (15).

4. The toilet negative ion air curtain deodorizing circulation airway system according to claim 3, characterized in that: The activated carbon odor filtering unit (5) includes an annular disc (14). The upper surface of the annular disc (14) is in sliding fit with the lower surface of the upper wall (16.1) of the disc - shaped inner housing (16). A number of vertically - penetrating activated carbon adsorption cylinders (2) are integrally arranged in a circumferential array on the lower surface of the annular disc (14). The lower end surfaces of each activated carbon adsorption cylinder (2) are in sliding fit with the upper surface of the lower wall (16.2) of the disc - shaped inner housing (16). Each activated carbon adsorption cylinder (2) is the activated carbon filling bin (1). Activated carbon particles are filled in the activated carbon filling bin (1). The activated carbon filling bins (1) between any two adjacent activated carbon adsorption cylinders (2) are communicated with each other through an arc - shaped one - way air duct (3).

5. The toilet negative ion air curtain deodorization circulation airway system according to claim 4, characterized in that: A gas one-way valve is provided in the gas conduction channels of each arc-shaped one-way air duct (3). The gas one-way valve enables the gas in each arc-shaped one-way air duct (3) to flow only in the clockwise direction, so that the activated carbon odor filtration unit (5) forms a closed-loop communication structure in the clockwise direction; An activated carbon storage tank body (11) is integrally provided on the activated carbon circulation air duct housing (10). Activated carbon particles are filled in the activated carbon storage bin (19) in the activated carbon storage tank body (11). The lower end of the activated carbon storage tank body (11) is communicated with an activated carbon feeding cylinder (18) that penetrates up and down. The lower end contour of the activated carbon feeding cylinder (18) is integrally connected to the upper wall (16.1). A number of gas overflow holes (17) are evenly distributed in a hollow manner on the side wall of the activated carbon feeding cylinder (18); when the lower end of any activated carbon filling bin (1) is communicated with the air outlet end of the negative pressure suction pipe (8), the lower end of the activated carbon feeding cylinder (18) is just coaxially communicated with the upper end of another activated carbon filling bin (1).

6. The toilet negative ion air curtain deodorization circulation airway system according to claim 5, characterized in that: It further includes a central drive shaft (23) coaxial with the annular disc (14). The central drive shaft (23) is fixedly connected to each of the activated carbon adsorption cylinders (2) through a connecting rod (21).

7. The toilet negative ion air curtain deodorization circulation airway system according to claim 6, characterized in that: The connection between the arc-shaped one-way air duct (3) and the activated carbon filling bin (1) is communicated through a number of mesh holes (20) that cannot penetrate the activated carbon particles.

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