Feeding and discharging system for automatic flushing closestool of nursing bed

Abstract

The invention discloses a feeding and discharging system for an automatic flushing closestool of a nursing bed, which comprises a cold water tank, a bottom outlet of the cold water tank is connected with an inlet of a cold water pump through a cold water pipeline, and an outlet of the cold water pump is connected with a flushing port of the automatic flushing closestool through a pipeline; a first branch is connected to a pipeline between a bottom outlet of the cold water tank and an inlet of the cold water pump, and the first branch is connected with an inlet of the hot water pump; the first branch is connected with a second branch, the second branch is connected with an outlet of a hot water tank, and an inlet of the hot water tank is connected with an outlet of a water heater; an outlet of the hot water pump is connected with the nozzle combination on the automatic flushing closestool, a third branch is connected to the hot water pipeline between the outlet of the hot water pump and the nozzle combination on the automatic flushing closestool, and an inlet of the water heater is connected with the third branch.

Description

Technical Field

[0001] The invention relates to the technical field of nursing equipment, and in particular to a water supply and drainage system for automatically flushing a toilet on a nursing bed. Background Art

[0002] At present, mainstream nursing beds are generally equipped with intelligent automatic flushing toilet systems. The technical integration and functional perfection of these systems have significantly improved the quality of care for disabled people, allowing disabled elderly people to use the toilet independently without the need for frequent assistance from nursing staff. In addition, some nursing beds have wireless remote control functions, allowing autonomous use at night to avoid the risk of falling due to frequent getting up.

[0003] The applicant of the present invention disclosed a toilet lifting mechanism for a nursing bed in patent CN202320584618.1, comprising a chassis mounted on a nursing bed bracket at the rear of the nursing bed, a first connecting rod hinged on each side of the middle of the chassis, a second connecting rod hinged on each side of the front of the chassis, the middle parts of the two second connecting rods are connected by a first fixed rod, the center of the rear of the chassis is hinged to the tail end of the first telescopic device, the front end of the first telescopic device is hinged to the middle of the first fixed rod; the top of each first connecting rod is hinged to the rear end of a third connecting rod, the middle of the third connecting rod is hinged to the top of the second connecting rod on the same side, and the front ends of the two third connecting rods are respectively hinged to the left and right sides of the toilet. When the toilet is not in use, it can be hidden under the bed surface of the nursing bed and does not occupy space; when in use, the toilet is exposed from the bed surface of the nursing bed. Moreover, if a high degree of fit is required between the toilet and the user's body, a second telescopic device is also designed in the toilet lifting mechanism to further fine-tune the posture of the toilet to ensure that the toilet fits closely to the user's body.

[0004] Patent CN202310289207.4 discloses an automatic flushing toilet cover and working method for a nursing bed, including a cover frame, a plurality of skeleton joints arranged in sequence from top to bottom, the left and right sides of the front ends of two adjacent skeleton joints are hinged through a skeleton shaft, and the rear ends of two adjacent skeleton joints are hinged to each other through a telescopic device; the left and right sides of the front end of the lowest skeleton joint are hinged to the left and right sides of the middle part of the base through a skeleton shaft, and its rear end is hinged to the rear part of the base through a telescopic device; the edge of each skeleton joint and the edge of the base that will contact the human body are installed with a buffer device. The automatic flushing toilet cover can be used for the automatic flushing toilet of a nursing bed, and can be deformed and adjusted according to the user's body posture, which can effectively avoid the problem of urine splashing and soiling the mattress when the bedridden user defecates or liquid splashing and wetting the mattress when flushing.

[0005] However, a supporting water supply and drainage system has not been developed for this set of automatic flushing toilets. Therefore, it is urgent for R & D personnel in this field to develop a water supply and drainage system for the automatic flushing toilet of the nursing bed. Summary of the Invention

[0006] The purpose of the present invention is to provide a water supply and drainage system for the automatic flushing toilet of the nursing bed.

[0007] To achieve the above purpose, the technical solution adopted by the present invention is specifically as follows:

[0008] A water supply and drainage system for the automatic flushing toilet of the nursing bed includes a cold water tank. The bottom outlet of the cold water tank is connected to the inlet of a cold water pump through a cold water pipeline, and the outlet of the cold water pump is connected to the flushing water inlet of the automatic flushing toilet through a pipeline.

[0009] A first branch is connected to the pipeline between the bottom outlet of the cold water tank and the inlet of the cold water pump. The first branch is connected to the inlet of a hot water pump.

[0010] A second branch is connected to the first branch. The second branch is connected to an outlet of a hot water tank. The inlet of the hot water tank is connected to the outlet of a water heater.

[0011] The outlet of the hot water pump is connected to a nozzle assembly on the automatic flushing toilet. A third branch is connected to the hot water pipeline between the outlet of the hot water pump and the nozzle assembly on the automatic flushing toilet. The inlet of the water heater is connected to the third branch.

[0012] Among them, a first electromagnetic valve is provided on the first branch. The first electromagnetic valve is located between the connection point of the first branch and the cold water pipeline and the connection point of the first branch and the second branch.

[0013] Among them, a second electromagnetic valve is provided on the second branch.

[0014] Among them, a third electromagnetic valve is provided on the third branch.

[0015] Among them, a fourth electromagnetic valve is provided on the pipeline between the outlet of the cold water pump and the flushing water inlet. A fifth electromagnetic valve is provided on the inlet pipeline of the nozzle assembly.

[0016] Among them, the air inlet pipe of the automatic flushing toilet is connected to a dryer. A warm air fan and a heating wire are provided in the dryer.

[0017] Among them, the sewage discharge pipe of the automatic flushing toilet is connected to the sewage inlet of a sewage tank. The air extraction port of the sewage tank is connected to a negative pressure fan.

[0018] Among them, both the cold water tank and the hot water tank are placed on a bracket, and the sewage tank is placed on another bracket. The backs of the two brackets are fixed on the back panel.

[0019] Among them, the first solenoid valve, the second solenoid valve and the third solenoid valve are all fixed on the bracket, and the water heater, the dryer, the negative pressure fan, the cold water pump, the hot water pump, the fourth solenoid valve and the fifth solenoid valve are all fixed on the back plate through the tray or the bracket.

[0020] Among them, the back plate is fixed at the tail of the nursing bed.

[0021] Compared with the prior art, the outstanding effects of the present invention are as follows:

[0022] (1) Modular integrated design: The cold water tank, the hot water tank and the sewage tank of the water supply and drainage system of the present invention are separately arranged and fixed on the back plate through the bracket, with a compact structure and saving space for the nursing bed; the pipelines and solenoid valves are hierarchically arranged (the cold / hot water pumps, heaters, fans, etc. are integrated on the back plate), which is convenient for installation and maintenance.

[0023] (2) Dual-tank dynamic water supply system: The cold water tank is separated from the hot water tank, and the solenoid valve is used to switch between cold water, hot water or mixed water modes to meet different cleaning needs (such as post-defecation flushing, female-specific cleaning); the hot water tank is linked with the instant water heater to achieve heating on demand and avoid energy waste.

[0024] (3) Multiple controls and safety redundancy: Multiple solenoid valves (the first to fifth solenoid valves) are used to segmentally control the water flow direction and flow rate, accurately adjusting the flushing intensity and range; the combination design of normally closed / normally open solenoid valves (such as the fourth solenoid valve is "one-in-two-out") supports the switching of multi-scene flushing modes.

[0025] (4) Negative pressure deodorization and drying integration: The sewage tank actively extracts air through the negative pressure fan to prevent the diffusion of odors; the dryer integrates a warm air fan and heating wires to achieve rapid warm air drying, reducing the risk of pressure sores caused by skin moisture.

[0026] (5) Improving nursing efficiency: The automated flushing and drying processes reduce manual intervention, and the work efficiency of nursing staff is increased by at least 60%; it supports the independent use of disabled users and reduces the risk of falls.

[0027] (6) Optimizing the user experience: The cleaning comfort can be improved by constant temperature hot water (35 - 40°C) and controlling the multi-stage water spraying pressure; the closed treatment of wastewater and dirt (siphon sewage discharge + negative pressure deodorization) ensures health and safety and avoids cross-infection.

[0028] (7) The water supply and drainage system of the present invention fills the gap in the water supply and drainage system supporting the automatic flushing toilet for nursing beds, with significant technical differentiation; it can be adapted to a variety of nursing bed models, has strong adaptability, and is easy to promote on a large scale; it is applicable to scenarios such as elderly care institutions, home care, and intensive care units in hospitals, meeting the long-term care needs of disabled people; it supports customized development (such as integrating AI sensors to predict excretion needs), expanding the smart elderly care ecosystem.

[0029] The following further describes the water supply and drainage system for the automatic flushing toilet of the nursing bed of the present invention in conjunction with the accompanying drawings and specific embodiments. Description of the Drawings

[0030] Figure 1 It is a schematic structural diagram of the water supply and drainage system for the automatic flushing toilet of the nursing bed.

[0031] Figure 2 It is a partial schematic structural diagram of the water supply and drainage system for the automatic flushing toilet of the nursing bed (components such as the cold water tank, hot water tank, and back panel are not drawn).

[0032] Figure 3 It is a schematic diagram of the pipeline connection between the water supply and drainage system for the automatic flushing toilet of the nursing bed and the automatic flushing toilet.

[0033] Figure 4 It is a three-dimensional perspective schematic diagram of the automatic flushing toilet for the nursing bed.

[0034] Figure 5 It is a three-dimensional schematic diagram of the rear side of the automatic flushing toilet for the nursing bed.

[0035] Figure 6 It is a three-dimensional schematic diagram of the front lower part of the automatic flushing toilet for the nursing bed.

[0036] Figure 7 It is a half-sectional three-dimensional schematic diagram of the automatic flushing toilet for the nursing bed.

[0037] Figure 8 It is a top view of the toilet body.

[0038] Figure 9 It is a schematic diagram of the flow channel of the toilet body.

[0039] Figure 10 It is a side view of the toilet body.

[0040] Among them, 1 - cold water tank, 2 - hot water tank, 3 - water heater, 4 - dryer, 5 - negative pressure fan, 6 - sewage tank, 7 - bracket, 8 - back plate, 9 - cold water pump, 10 - hot water pump, 11 - first solenoid valve, 12 - second solenoid valve, 13 - third solenoid valve, 14 - fourth solenoid valve, 15 - fifth solenoid valve, 16 - sewage discharge pipe, 17 - sewage inlet, 18 - air extraction port, 19 - air inlet pipe, 20 - warm air fan, 21 - heating wire, 22 - nozzle combination.

[0041] 101 - toilet body, 102 - toilet cover, 103 - cover nozzle, 104 - first laser sensor, 105 - second laser sensor, 106 - rear nozzle, 107 - atomizing nozzle, 108 - drying air inlet, 109 - negative pressure relief valve, 110 - sewage discharge port, 111 - drying air duct, 112 - left flush water inlet, 113 - central flush water inlet, 114 - right flush water inlet, 115 - front nozzle, 116 - flow channel, 117 - sewage discharge channel. Specific embodiments

[0042] As Figure 1-3 shown, a water supply and drainage system for an automatically flushing toilet of a nursing bed includes a cold water tank 1. The bottom outlet of the cold water tank 1 is connected to the inlet of a cold water pump 9 through a cold water pipeline, and the outlet of the cold water pump 9 is connected to the flush water inlet of the automatically flushing toilet through a pipeline. A first branch is connected to the pipeline between the bottom outlet of the cold water tank 1 and the inlet of the cold water pump 9, and the first branch is connected to the inlet of a hot water pump 10.

[0043] A second branch is connected to the first branch. The second branch is connected to an outlet of the hot water tank 2, and the inlet of the hot water tank 2 is connected to the outlet of a water heater 3; the outlet of the hot water pump 10 is connected to a nozzle combination 22 on the automatically flushing toilet. A third branch is connected to the hot water pipeline between the outlet of the hot water pump 10 and the nozzle combination 22 on the automatically flushing toilet, and the inlet of the water heater 3 is connected to the third branch.

[0044] A first solenoid valve 11 is provided on the first branch, and the first solenoid valve 11 is located between the connection point of the first branch and the cold water pipeline and the connection point of the first branch and the second branch. A second solenoid valve 12 is provided on the second branch. A third solenoid valve 13 is provided on the third branch. A fourth solenoid valve 14 is provided on the pipeline between the outlet of the cold water pump 9 and the flush water inlet; a fifth solenoid valve 15 is provided on the inlet pipeline of the nozzle combination 22.

[0045] Among them, the first solenoid valve 11 is a normally closed solenoid valve, and both the second solenoid valve 12 and the third solenoid valve 13 are normally open solenoid valves. The fourth solenoid valve 14 is a one-in-two-out solenoid valve. The fifth solenoid valve 15 is a one-in-four-out solenoid valve.

[0046] The flushing nozzles of the automatic flushing toilet include a middle flushing nozzle and two side flushing nozzles, which are respectively connected to two outlet pipelines controlled by the fourth electromagnetic valve 14. The nozzle assembly 22 includes a shield nozzle, a front nozzle, a rear nozzle and a steam nozzle. The four nozzles are respectively connected to 4 outlet pipelines controlled by the fifth electromagnetic valve 15.

[0047] The air inlet pipe 19 of the automatic flushing toilet is connected to the dryer 4, and a warm air fan 20 and a heating wire 21 are arranged in the dryer 4.

[0048] The sewage discharge pipe 16 of the automatic flushing toilet is connected to the sewage inlet 17 of the sewage tank 6, and the air extraction port 18 of the sewage tank 6 is connected to the negative pressure fan 5.

[0049] The cold water tank 1 and the hot water tank 2 are both placed on a bracket 7, and the sewage tank 6 is placed on another bracket 7. The backs of the two brackets 7 are both fixed on the back plate 8. The first electromagnetic valve 11, the second electromagnetic valve 12 and the third electromagnetic valve 13 are all fixed on the right bracket 7, and the water heater 3, the dryer 4, the negative pressure fan 5, the cold water pump 9, the hot water pump 10, the fourth electromagnetic valve 14 and the fifth electromagnetic valve 15 are all fixed on the back plate 8 through a tray or a bracket. The back plate 8 is fixed at the tail of the nursing bed. The cold water tank 1, the hot water tank 2 and the sewage tank 6 are all detachable.

[0050] In other beneficial embodiments, the first electromagnetic valve 11 and the second electromagnetic valve 12 (i.e., Figure 3 at point A) can be replaced by a three-way reversing valve.

[0051] As Figures 4-8 shown, the automatic flushing toilet for a nursing bed includes a toilet body 101 and a toilet shield 102 installed on the toilet body 101. A first laser sensor 104 is provided at the center of the inner wall surface of the top of the toilet shield 102, and a shield nozzle 103 is provided below the first laser sensor 104. The first laser sensor 104 and the shield nozzle 103 are both located on the central axis of the inner wall surface of the toilet shield 102;

[0052] An air inlet for drying 108 and a negative pressure relief valve 109 are provided at the upper part of the inner wall surface at the rear of the toilet body 101. A second laser sensor 105 is provided at the center of the inner wall surface at the rear of the toilet body 101, and a rear nozzle 106 is provided below the second laser sensor 105. The second laser sensor 105 and the rear nozzle 106 are both located on the central axis of the inner wall surface of the toilet body 101.

[0053] Atomizing nozzles 107 are provided at the centers of the left side wall surface and the right side wall surface of the toilet body 101, and a front nozzle 115 is provided at the center of the front wall surface of the toilet body 101. Among them, the atomizing nozzle 107 is used for steam sitz bath. The front nozzle 115, the rear nozzle 106 and the shield nozzle 103 are used for flushing the body.

[0054] Below the front outer edge of the top of the toilet body 101, there are a left flushing port 112, a central flushing port 113, and a right flushing port 114. On the upper left and right sides of the inner wall surface of the toilet body 101, they both bulge inward to form two stepped flow channels 116. The left flushing port 112 is connected to the left flow channel 116, and the right flushing port 114 is connected to the right flow channel 116. When flushing, the left flushing port 112 and the right flushing port 114 conduct wall flushing from front to back and downward along the left and right flow channels, and the central flushing port 113 flushes from top to bottom, ensuring that the urine and feces on the toilet wall can all be flushed to the bottom of the toilet.

[0055] Below the rear of the toilet body 101, there are a sewage discharge port 110 and a drying air duct 111. The sewage discharge port 110 is connected to the sewage discharge channel 117 in the toilet body 101, and the drying air duct 111 is connected to the drying air inlet 108. There is a reduced-diameter port on the bottom surface of the toilet body 101, and the reduced-diameter port is connected to the sewage discharge port 110 through an inclined upward sewage discharge channel 117. Warm air can be introduced through the drying air inlet 108 to dry the user's body.

[0056] As Figure 9 shown, the shape of the top edge of the inner wall surface of the toilet body 101 is wider in the front and narrower in the back, approximately elliptical in the front, both the left and right sides in the middle contract inward, and the back is in an inverted U shape.

[0057] As Figure 10 shown, the connection line between the center of the front side center of the top of the toilet body 101 and the center of the reduced-diameter port on the bottom surface is in a parabolic shape.

[0058] Buffer devices are installed at the parts of the edge of the toilet body 101 and the edge of the toilet cover 102 that come into contact with the user's body. A number of pressure sensors are evenly distributed on the outside, inside, or inner side of the buffer device. Among them, the buffer device can be selected as a soft cushion block. The specific setting method of the buffer device and the pressure sensor can refer to the arrangement method in Patent CN202310289207.4.

[0059] The negative pressure relief valve 109 is composed of a baffle blocked by a spring, and its opening direction is towards the inside of the toilet. After the toilet cover is buckled onto the user's body, a sealed space is formed inside the toilet. When discharging sewage, the negative pressure fan 5 sucks, and a negative pressure is formed inside the toilet. At this time, the negative pressure relief valve 109 is sucked open to maintain the pressure balance inside and outside the toilet, and sewage such as urine and feces is sucked into the sewage tank 6 through the sewage pipe 16.

[0060] As Figure 3As shown in the figure, when in use, the automatic flushing toilet is connected to the water supply and drainage system. The water supply and drainage system for the automatic flushing toilet of the nursing bed solves the problems of relying on manual labor, having many hygienic hazards, and insufficient comfort in the traditional nursing bed flushing system through an innovative sub-water tank structure and high-efficiency component integration. While improving the user experience, it reduces the nursing cost, improves the quality of life of the disabled population, and alleviates the pressure of shortage of nursing resources; it promotes the upgrading of the nursing instrument industry towards intelligence and humanization, and has significant industrial application prospects.

[0061] It should be noted that the Figures 4-7 reference numerals of components such as nozzles, pressure relief valves, and sensors in the attached drawings of the specification of the present invention only represent the installation positions of these components in the automatic flushing toilet of the present invention. In order to keep the schematic diagram simple and easy to understand, the specific shapes of these components are not drawn. Components such as nozzles, pressure relief valves, sensors, solenoid valves, water pumps, fans, heating wires, air blowers, heaters, and dryers involved in the present invention are all conventional components that can be purchased in the market, and those skilled in the art can select components with appropriate technical parameters according to different toilet sizes and working requirements.

[0062] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A water supply and drainage system for an automatic flushing toilet of a nursing bed, characterized in that: It includes a cold water tank (1). The bottom outlet of the cold water tank (1) is connected to the inlet of a cold water pump (9) through a cold water pipeline, and the outlet of the cold water pump (9) is connected to the flush water inlet of an automatic flushing toilet through a pipeline. A first branch is connected to the pipeline between the bottom outlet of the cold water tank (1) and the inlet of the cold water pump (9), and the first branch is connected to the inlet of a hot water pump (10). A second branch is connected to the first branch, and the second branch is connected to an outlet of a hot water tank (2). The inlet of the hot water tank (2) is connected to the outlet of a water heater (3). The outlet of the hot water pump (10) is connected to a nozzle assembly (22) on the automatic flushing toilet. A third branch is connected to the hot water pipeline between the outlet of the hot water pump (10) and the nozzle assembly (22) on the automatic flushing toilet, and the inlet of the water heater (3) is connected to the third branch.

2. The water supply and drainage system for the automatic flushing toilet of the nursing bed according to claim 1, characterized in that: A first solenoid valve (11) is provided on the first branch. The first solenoid valve (11) is located between the connection point of the first branch and the cold water pipeline and the connection point of the first branch and the second branch.

3. The water supply and drainage system for the automatic flushing toilet of the nursing bed according to claim 2, characterized in that: A second solenoid valve (12) is provided on the second branch.

4. The water supply and drainage system for an automatically flushing toilet of a nursing bed according to claim 3, characterized in that: A third solenoid valve (13) is provided on the third branch.

5. The water supply and drainage system for an automatically flushing toilet of a nursing bed according to claim 4, wherein: A fourth solenoid valve (14) is provided on the pipeline between the outlet of the cold water pump (9) and the flush water inlet; a fifth solenoid valve (15) is provided on the inlet pipeline of the nozzle assembly (22).

6. The water supply and drainage system for the automatic flushing toilet of the nursing bed according to claim 5, characterized in that: The air inlet pipe (19) of the automatic flushing toilet is connected to a dryer (4), and a warm air fan (20) and a heating wire (21) are provided in the dryer (4).

7. The water supply and drainage system for an automatic flushing toilet of a nursing bed according to claim 6, characterized in that: The sewage discharge pipe (16) of the automatic flushing toilet is connected to the sewage inlet (17) of a sewage tank (6), and the air extraction port (18) of the sewage tank (6) is connected to a negative pressure fan (5).

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