A liquid food supply device for digestive care

Abstract

This invention discloses a liquid food supply device for digestive care, relating to the field of gastroenterology. It includes a housing, which serves as the supporting base for the entire device and integrates all functional components. A first partition and a second partition are fixedly arranged on the inner wall of the housing, forming a T-shape. The T-shaped partition physically separates the cavities, preventing crosstalk between different areas. One side of the first partition is a water storage cavity. This invention features a partitioned layout with independent water storage and insulation cavities, ensuring constant temperature storage of the liquid food and eliminating the need for repeated preparation. The insulation cavity contains a liquid food storage box. Multiple sets of electric heating tubes are arranged within the insulation cavity, forming a circulating heat exchange system with a circulating liquid guide shell and a guide impeller. This ensures a uniform and constant temperature around the liquid food storage box, allowing for pre-stored and insulated liquid food, eliminating the need for temporary preparation for each patient and significantly reducing repetitive operations.

Description

Technical Field

[0001] This invention relates to the field of gastroenterology, specifically to a liquid food supply device for digestive care. Background Technology

[0002] In the Department of Gastroenterology, nasogastric feeding is commonly used to provide nutrition for patients with dysphagia, postoperative fasting, and severe bedridden conditions. The feeding device is a basic clinical nursing device.

[0003] Existing traditional liquid food supply equipment has the following two drawbacks: First, traditional equipment relies solely on manual feeding, making it impossible to precisely control the feeding time and dosage, resulting in a heavy workload for medical staff. The tubing lacks an automatic flushing system, allowing food residue to easily adhere to the tubing walls and breed bacteria, easily leading to tubing blockages and gastrointestinal infections in patients. Furthermore, the lack of an independent clean water supply chamber means that water must be drawn temporarily each time the tubing is flushed, making the operation cumbersome and hindering the achievement of ward cleanliness standards. Second, commercially available equipment lacks a sealed, temperature-controlled storage chamber, requiring liquid food to be prepared and used immediately, making bulk storage impossible and repeatedly adjusting the preparation significantly increasing the workload for nursing staff.

[0004] Therefore, the present invention proposes a liquid food supply device for digestive care. Summary of the Invention

[0005] The purpose of this invention is to provide a liquid food supply device for digestive care, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a liquid food supply device for digestive care, comprising a shell, which serves as the supporting base for the entire machine and is used to integrate and install all functional components; a first partition and a second partition are fixedly arranged on the inner wall of the shell, the first partition and the second partition are distributed in a T-shape, and the T-shaped partition achieves physical separation of the cavity and prevents crosstalk between the media in each area; one side of the first partition is a water storage cavity, which is used to independently store sterile water for flushing the pipeline, and the other side of the first partition is a heat preservation cavity, which constitutes a closed constant temperature heat exchange cavity; a liquid food storage box is fixedly arranged inside the heat preservation cavity, which is used to pre-fill the prepared nasogastric liquid food to achieve constant temperature storage of the liquid food; The housing contains a liquid food supply mechanism, a rinsing mechanism, a transmission mechanism, and a circulating heating mechanism. These four mechanisms respectively perform four core care functions: quantitative food delivery, pipeline rinsing, unified power output, and constant temperature maintenance. The liquid food supply mechanism includes a peristaltic pump housing fixed to the surface of the second partition. The peristaltic pump housing provides a sealed and protected installation space for the peristaltic delivery components. A liquid food tube is fixedly embedded in the surface of the liquid food storage box. The liquid food tube serves as a flexible pipeline for liquid food delivery. The end of the liquid food tube away from the liquid food storage box passes through the inside of the peristaltic pump housing, and the tube is squeezed by rollers to achieve uniform feeding. The device rapidly delivers liquid food. A protective cover is fixedly installed on the outside of the housing to physically protect the exposed pipe joints from impacts, detachment, and liquid leakage. The output end of the liquid food tube extends into the inside of the protective cover and is fixedly connected to a T-connector. The T-connector allows for the convergence and diversion of fluids in the liquid food pathway and the rinsing pathway. The rinsing mechanism includes a rinsing water pipe fixedly installed at the bottom input end of the T-connector, which is used to deliver rinsing water. The output end of the T-connector is fixedly connected to a liquid food supply tube, which connects to the patient's gastric tube to complete the delivery of liquid food to the stomach.

[0007] Preferably, the transmission mechanism is a unified power unit for the entire machine, synchronously providing rotational power for liquid food delivery and medium circulation. The transmission mechanism includes a drive motor fixed to the inner wall of the housing, which outputs rotational torque as the sole power source, and a drive shaft rotatably mounted on the inner wall of the housing. The drive shaft is used to transmit motor power. The drive shaft is coaxially distributed with the peristaltic pump housing, and the end of the drive shaft away from the drive motor extends into the interior of the peristaltic pump housing. The end of the drive shaft is coaxially fixed with the peristaltic disc inside the peristaltic pump housing, driving the peristaltic disc to rotate synchronously and squeeze the liquid food tube to deliver liquid. A first synchronous wheel is fixedly connected to the surface of the drive shaft, which transmits power to the heating and circulation components as a power output wheel. A worm gear is fixedly connected to the output end of the drive motor. The worm gear and the drive shaft are arranged in a cross shape, and a worm wheel is fixedly connected to the surface of the drive shaft. The worm gear and the worm wheel mesh, and through cooperation, transmission and self-locking when stopping are achieved, preventing backflow of liquid in the pipeline after the motor stops, which could cause incorrect material discharge.

[0008] Preferably, the circulating heating mechanism is used to realize the circulating flow of heat exchange medium inside the heat-insulating cavity, and uniformly maintain the constant temperature of the liquid food storage box; the circulating heating mechanism includes a circulating liquid guide shell fixedly connected to the surface of the second partition plate. The circulating liquid guide shell serves as a medium circulation sealed cavity. A linkage shaft is coaxially rotatably provided at the end of the circulating liquid guide shell. The linkage shaft is used to drive the internal impeller to rotate. A second synchronous wheel is fixedly connected to the end of the linkage shaft away from the circulating liquid guide shell. The position of the second synchronous wheel corresponds to that of the first synchronous wheel. A synchronous belt is assembled between the first and second synchronous wheels. Power is transmitted across the components by means of the synchronous belt. The diameter of the first synchronous wheel is six times that of the second synchronous wheel, forming an acceleration transmission structure, increasing the impeller speed, allowing the heat exchange medium to circulate, and ensuring that the temperature inside the cavity is uniform and without temperature difference.

[0009] Preferably, the end of the linkage shaft away from the second synchronous wheel extends into the interior of the circulating liquid guide shell and is fixedly connected to a guide impeller. The rotation of the guide impeller drives the heat exchange medium to circulate in a directional manner. A circulating liquid outlet pipe is fixedly embedded on the surface of the circulating liquid guide shell. The input end of the circulating liquid outlet pipe corresponds to the output end of the guide impeller and is used to output the pressurized high-temperature medium. A circulating liquid inlet pipe is fixedly embedded on the surface of the first partition. The output end of the circulating liquid inlet pipe extends into the interior of the circulating liquid guide shell, and the input end of the circulating liquid inlet pipe extends into the interior of the heat insulation cavity. It is used to recover the cooled medium. The end of the circulating liquid outlet pipe away from the circulating liquid guide shell extends into the interior of the heat insulation cavity. The circulating liquid inlet pipe and the circulating liquid outlet pipe cooperate to form a closed circulation loop, continuously and uniformly heat-exchanging and heat-insulating the outer periphery of the liquid food storage box.

[0010] Preferably, the rinsing mechanism is equipped with an independent clean water delivery power to achieve self-cleaning of the high-pressure pipeline; the rinsing mechanism also includes a rinsing pump fixedly installed on the surface of the second partition plate. The rinsing pump independently draws clean water to provide rinsing water pressure. The input end of the rinsing pump extends into the interior of the water storage cavity to fully draw the clean water stored in the cavity. The end of the rinsing water pipe away from the T-connector is fixedly connected to the output end of the rinsing pump to deliver pressurized rinsing water; the two input ends of the T-connector are respectively fixedly installed with a first solenoid valve and a second solenoid valve. The two solenoid valves are independently controlled without interlocking. The first solenoid valve and the second solenoid valve correspond to the output ends of the liquid food hose and the rinsing water pipe, respectively, to independently guide the liquid food passage or the rinsing passage, preventing clean water and liquid food from mixing and contaminating the pipeline and the storage box.

[0011] Preferably, the inner wall of the insulated cavity is fixedly provided with several electric heating tubes, which serve as heat sources to heat the heat exchange medium inside the cavity. The several electric heating tubes are evenly distributed on one side of the liquid food storage box, providing all-round heating, eliminating local low-temperature dead zones, stabilizing the liquid food intake temperature, and avoiding discomfort caused by low-temperature liquid food irritating the patient's stomach and intestines.

[0012] Preferably, a knob adjustment mechanism is fixedly provided on the upper surface of the housing. The knob adjustment mechanism is used to switch between automatic liquid food supply and automatic flushing pipeline functions. It relies on a purely mechanical structure to trigger the control signal and stably adapt to the humid environment of the ward. The knob adjustment mechanism includes a fixing ring fixed on the upper surface of the housing, which provides a positioning base for the rotating component, and a rotating column rotatably disposed on the upper surface of the housing. The rotating column rotates synchronously with the knob to realize gear switching. The rotating column and the fixing ring are coaxially distributed, and an adjustment knob is fixedly connected to the top of the rotating column. The adjustment knob is exposed above the housing for medical staff to rotate and operate with one hand.

[0013] Preferably, the inner side of the fixing ring is provided with several limiting grooves, which provide installation and accommodating space for the switch and the top block. The inner walls of the several limiting grooves are respectively fixedly installed with a first micro switch and a second micro switch. The two micro switches correspond to the circuit opening and closing of the feeding and rinsing working modes, respectively. The inner wall of the limiting groove is slidably installed with a movable top block. The movable top block triggers the micro switch by sliding and pressing. The positions of the first micro switch and the second micro switch are both corresponding to the movable top block, ensuring that the squeezing action can accurately touch the switch contacts.

[0014] Preferably, an arc-shaped extrusion block is fixedly connected to the circumferential surface of the rotating column. The arc-shaped extrusion block extrudes the movable top block as the rotating column moves in a circular motion. The position of the arc-shaped extrusion block corresponds to that of the movable top block. An anti-slip rubber sleeve is fixedly provided on the surface of the arc-shaped extrusion block to increase the extrusion contact friction and prevent slippage that would prevent the switch from being triggered. Two return springs are fixedly provided on the inner wall of the limiting groove. One end of the return spring is fixedly connected to the surface of the movable top block. After the knob is turned away, the spring automatically pulls the top block back, disconnects the micro switch, and stops the corresponding working process.

[0015] Preferably, a water inlet pipe and a liquid food inlet pipe are fixedly embedded on the upper surface of the shell, so as to realize the separate and independent filling of clean water and liquid food, avoiding cross-contamination during feeding. The ends of the water inlet pipe and the liquid food inlet pipe are threaded with sealing caps. After the sealing caps are tightened, the pipe openings are sealed to prevent dust and bacteria in the ward from entering the cavity. The bottom ends of the water inlet pipe and the liquid food inlet pipe extend into the interior of the water storage cavity and the liquid food storage box, respectively, so that the medium can be directly replenished into the corresponding cavity. The operation of opening the cap to add food is simple and convenient.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This digestive care liquid food supply device features a separate layout with independent water storage and insulation cavities. The stored food is kept at a constant temperature, eliminating the need for repeated preparation. The shell is divided into independent water storage and insulation cavities by T-shaped first and second partitions. The water storage cavity is specifically for storing rinsing water, while the insulation cavity houses the liquid food storage box. Multiple electric heating tubes are arranged in the insulation cavity, forming a circulating heat exchange system with a circulating liquid guide shell and impeller. This ensures a uniform and constant temperature around the liquid food storage box, allowing for pre-stored and insulated liquid food. Medical staff no longer need to prepare the food for each nursing session, significantly reducing repetitive operations and improving nursing efficiency. The constant temperature environment prevents cold liquid food from irritating the patient's stomach and intestines, reducing discomfort and complications such as bloating and diarrhea.

[0017] This liquid food supply device for digestive care features a first solenoid valve and a second solenoid valve at the two input ends of the three-way connector. The liquid food tube and the flushing water tube are independently controlled, allowing for separate liquid food supply and flushing, or simultaneous flushing as needed. The two fluids are physically isolated to prevent cross-contamination between the liquid food and the flushing water, meeting the requirements of medical aseptic care. A knob adjustment mechanism is located on the top of the housing. Rotating the adjustment knob rotates the rotating column and the arc-shaped squeezing block, which in turn triggers the first and second microswitches, switching between automatic liquid food supply and automatic tubing flushing modes. Medical staff can switch modes with one hand, adapting to rapid operation scenarios in wards.

[0018] This liquid food supply device for digestive care uses a drive motor to drive the peristaltic pump's internal peristaltic disc through one end of the drive shaft to achieve quantitative delivery of liquid food. At the same time, the first synchronous pulley on the drive shaft drives the second synchronous pulley via a synchronous belt, which in turn drives the guide impeller to circulate the heat transfer medium in the insulated cavity. One power source drives the delivery and circulation heating mechanisms simultaneously, reducing the size of the equipment and its power consumption. Multiple sets of electric heating tubes are arranged in the insulated cavity to ensure that the temperature around the liquid food storage box is uniform and constant. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a side view of the housing structure of the present invention; Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the internal structure of the housing of the present invention; Figure 5 This is a partially enlarged schematic diagram of the internal structure of the housing of the present invention; Figure 6 This is a partial structural diagram of the transmission mechanism of the present invention; Figure 7 This is a top view of the structure of the present invention; Figure 8 This is a schematic diagram of the rear view structure of the present invention; Figure 9 This is a schematic diagram of the internal structure of the knob adjustment mechanism of the present invention.

[0020] In the diagram: 1. Shell; 2. Washing mechanism; 3. Liquid food supply mechanism; 4. Transmission mechanism; 5. Circulating heating mechanism; 6. Protective cover; 7. Knob adjustment mechanism; 101. First partition; 102. Second partition; 103. Water storage cavity; 104. Insulation cavity; 105. Liquid food storage box; 106. Water inlet pipe; 107. Liquid food inlet pipe; 201. Flushing water pipe; 202. Flushing pump; 301. Peristaltic pump housing; 302. Liquid food tubing; 303. T-connector; 304. Liquid food supply tube; 305. First solenoid valve; 306. Second solenoid valve; 401. Drive motor; 402. Drive shaft; 403. First synchronous pulley; 404. Worm gear; 405. Worm wheel; 406. Second synchronous pulley; 407. Synchronous belt; 501. Circulating liquid guide shell; 502. Linkage shaft; 503. Guide impeller; 504. Circulating liquid outlet pipe; 505. Circulating liquid inlet pipe; 506. Electric heating tube; 701. Fixed ring; 702. Rotating column; 703. Adjusting knob; 704. Limiting groove; 705. First micro switch; 706. Second micro switch; 707. Movable top block; 708. Arc-shaped pressing block; 709. Return spring. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-9 This invention provides a technical solution: a liquid food supply device for digestive care, comprising a shell 1, which is an integrated medical rigid plastic molded box. A first partition 101 and a second partition 102 are vertically fixedly installed on the inner wall of the shell 1. The first partition 101 and the second partition 102 are fixedly intersected in a T-shape. The two partitions divide the internal space of the shell 1 into independent functional cavities that do not cross-flow, thereby achieving a zoned layout, avoiding the mixing and contamination of liquid food, water, and heating medium, improving the overall cleanliness of the equipment, and meeting the hospital's sterile nursing standards.

[0023] The space to the left of the first partition 101 forms a water storage cavity 103, which is specifically used to store sterile water for flushing the pipeline. The space to the right of the first partition 101 forms an insulated cavity 104, inside which a liquid food storage box 105 is fixedly installed. The liquid food storage box 105 is a food-grade transparent sealed box used to store pre-prepared nasogastric feeding liquid food. The T-shaped partition design brings significant advantages: water storage and food storage are completely physically isolated, and the operations of adding water and liquid food do not interfere with each other. There is no need for medical staff to repeatedly prepare liquid food on-site, and liquid food can be stored in batches at one time, which greatly reduces the frequency of nursing operations and improves the efficiency of ward nursing work.

[0024] The shell 1 integrates a liquid food supply mechanism 3, a rinsing mechanism 2, a transmission mechanism 4, and a circulating heating mechanism 5. A protective cover 6 is fixedly installed on the outer wall of the shell 1. The protective cover 6 covers the pipe joint area, which can effectively protect the T-joint and pipe insertion position, avoid the pipe from loosening and leakage caused by the patient's limbs or medical staff's operation, and improve the stability of the equipment.

[0025] A water inlet pipe 106 and a liquid food inlet pipe 107 are fixedly embedded on the upper surface of the shell 1. Both the upper ends of the water inlet pipe 106 and the liquid food inlet pipe 107 are equipped with threaded sealing caps. After tightening the sealing caps, the pipe openings can be completely sealed to prevent dust and bacteria in the ward from falling into the cavity and contaminating the medium. The bottom end of the water inlet pipe 106 extends vertically into the water storage cavity 103, and the bottom end of the liquid food inlet pipe 107 connects vertically to the liquid food storage box 105. The separate independent inlet pipe structure allows for separate replenishment of clean water and liquid food, and there will be no cross-leakage of liquids during the inlet process. The operation of opening the cap to add food is simple. After the sealing cap is locked, the cavity is sealed and has good heat preservation and water retention effects. The liquid food is not easy to spoil after long-term storage, and the burden of frequent liquid food replacement is reduced.

[0026] A knob adjustment mechanism 7 is fixedly installed in the middle of the upper surface of the housing 1. The knob adjustment mechanism 7 realizes the switching between two working modes: automatic liquid food supply and automatic tubing flushing, which is suitable for long-term and high-frequency clinical use scenarios.

[0027] The liquid food supply mechanism 3 is fixedly installed on the front surface of the second partition 102 and includes a peristaltic pump housing 301. The peristaltic pump housing 301 is locked and fixed to the surface of the second partition 102. The liquid food storage box 105 has an opening in the side wall for sealing and embedding of a liquid food tube 302. One end of the liquid food tube 302 extends into the liquid food storage box 105 to draw liquid food, and the other end passes horizontally through the internal cavity of the peristaltic pump housing 301. The liquid food is quantitatively delivered by peristaltic squeezing.

[0028] The liquid feeding tube 302 extends outward from the peristaltic pump housing 301 and into the outer protective cover 6 of the housing 1. The end of the tube is sealed and connected to a three-way connector 303. The three-way connector 303 is a fluid connector with one inlet and two outlets. The three-way connector 303 is equipped with two inlet ends and one outlet end. The outlet end is fixedly connected to the liquid feeding tube 304. The end of the liquid feeding tube 304 is connected to a clinically standard gastric tube to directly deliver liquid food to the patient's stomach.

[0029] The two input ends of the three-way connector 303 are respectively equipped with a first solenoid valve 305 and a second solenoid valve 306. The first solenoid valve 305 corresponds to the output end of the liquid food hose 302, and the second solenoid valve 306 corresponds to the output end of the flushing water pipe 201. The two solenoid valves are independently controlled to open and close without mechanical interlocking. They can be opened and closed individually or simultaneously.

[0030] It is worth noting that the liquid food delivery and pipeline flushing are physically isolated. When one pipeline is working, the other is completely closed, preventing cross-flow of clean water and liquid food and avoiding backflow of liquid food residue to contaminate the liquid food storage box 105. After the first feeding, the second solenoid valve 306 can be opened separately to start flushing the entire pipeline with clean water, washing away liquid food residue attached to the pipe wall, reducing the probability of pipeline blockage and bacterial growth, and reducing complications such as gastrointestinal infection, abdominal distension and diarrhea in patients. The solenoid valve has a fast on / off response speed and precise dosage control. Combined with the peristaltic pump, it ensures that the dosage of each nasogastric feeding is uniform and stable, solving the defects of large dosage error and uneven feeding interval of traditional manual feeding.

[0031] The flushing mechanism 2 includes a flushing water pipe 201 and a flushing pump 202. The flushing pump 202 is locked and fixed to the lower part of the second partition 102. The water inlet pipe of the flushing pump 202 extends vertically downward to the bottom of the water storage cavity 103, which can fully extract the clean water inside the water storage cavity 103. The water outlet of the flushing pump 202 is sealed and connected to the flushing water pipe 201. The flushing water pipe 201 extends upward and is connected to the bottom input end of the tee connector 303. The second solenoid valve 306 is connected in series in the middle section of the pipe.

[0032] The flushing pump 202 is an independent power unit, separate from the peristaltic pump for supplying liquid food. The flushing water pressure can be adjusted independently, and the flushing water flow has sufficient impact force to thoroughly flush away residual viscous liquid food on the inner wall of the pipe. Compared with traditional equipment that relies on the liquid food delivery pump as a flushing power source, the flushing cleanliness is greatly improved. The water storage cavity 103 has a large capacity water storage design, which can store several days' worth of flushing water at one time, eliminating the need to refill water every time the pipe is flushed, further simplifying the nursing operation process.

[0033] The transmission mechanism 4 includes a drive motor 401. The output shaft of the drive motor 401 is horizontally fixedly connected to a worm gear 404. The worm gear 404 and the drive shaft 402 are arranged vertically in a cross pattern. The two ends of the drive shaft 402 are rotatably mounted on the inner wall of the housing 1 through bearings. A worm wheel 405 is fixedly mounted on the outer wall of the middle section of the drive shaft 402. The worm wheel 405 meshes with the worm gear 404. When the drive motor 401 is running, it drives the drive shaft 402 to rotate synchronously.

[0034] One end of the drive shaft 402 extends horizontally into the peristaltic pump housing 301. The end of the shaft is coaxially and securely connected to the peristaltic disc inside the pump. When the drive shaft 402 rotates, it directly drives the peristaltic disc to rotate synchronously. The rollers on the outer periphery of the disc circulate and squeeze the liquid food tube 302, achieving uniform delivery of the liquid food through the deformation of the tube. A first synchronous pulley 403 is also fixedly mounted on the outer wall of the drive shaft 402. A synchronous belt 407 is fitted between the first synchronous pulley 403 and the second synchronous pulley 406, achieving synchronous power transmission through belt friction. The diameter of the first synchronous pulley 403 is set to six times that of the second synchronous pulley 406, forming an accelerating transmission. The rotational speed of the second synchronous pulley 406 is much higher than that of the drive shaft 402, causing the guide impeller 503 to rotate at high speed. The heat-conducting medium inside the insulation cavity 104 circulates, ensuring uniform heat diffusion and preventing local overheating or insufficient temperature.

[0035] The transmission mechanism 4 can drive the peristaltic turntable and the guide impeller 503 to operate synchronously with only a single drive motor 401, eliminating the need for two separate motors. This significantly reduces the number of electrical components inside the equipment, shrinks the overall size, and lowers the production cost. At the same time, it reduces the need for multi-motor synchronous control circuits, lowers the probability of equipment failure, and achieves significant energy saving and consumption reduction.

[0036] The circulating heating mechanism 5 is responsible for maintaining the constant temperature of the liquid food. It includes a circulating liquid guide shell 501, a linkage shaft 502, a guide impeller 503, a circulating liquid outlet pipe 504, a circulating liquid inlet pipe 505, and an electric heating tube 506. The circulating liquid guide shell 501 is fixedly locked to the side of the second partition plate 102. The linkage shaft 502 is rotatably mounted at the end of the circulating liquid guide shell 501. The second synchronous pulley 406 is fixedly installed at the outer end of the linkage shaft 502, and the power transmitted by the drive shaft 402 is received by the synchronous belt 407. The other end of the linkage shaft 502 extends into the interior of the circulating liquid guide shell 501, and the guide impeller 503 is fixed at the end of the shaft. The rotation of the impeller drives the heat transfer medium to circulate.

[0037] The sidewalls of the circulating liquid guide shell 501 are connected to the circulating liquid outlet pipe 504 and the circulating liquid inlet pipe 505, respectively. One end of the circulating liquid inlet pipe 505 is connected to the liquid inlet of the circulating liquid guide shell 501, and the other end extends into the heat-insulating cavity 104 to extract the low-temperature medium. One end of the circulating liquid outlet pipe 504 is connected to the liquid outlet end of the guide impeller 503, and the other end flows back into the heat-insulating cavity 104, forming a complete closed-loop heat exchange circuit. Multiple electric heating tubes 506 are evenly arranged on the inner wall of the heat-insulating cavity 104. All electric heating tubes 506 are distributed around the outside of the liquid food storage box 105. After the heating tubes are energized, they heat the heat-conducting medium inside the heat-insulating cavity 104. The medium continuously circulates under the impeller, completely enveloping the liquid food storage box 105.

[0038] Compared to traditional single-point heating equipment, the circulating constant-temperature heating structure has multiple advantages. The circulating medium eliminates heating dead zones, ensuring uniform temperature around the liquid food storage box 105. The overall temperature of the liquid food is maintained within the human body's suitable eating range, preventing the upper layer of liquid food from cooling down while the lower layer becomes overheated. Constant-temperature storage of liquid food avoids the intestinal mucosa from being irritated by cold liquid food, reducing gastrointestinal complications such as abdominal pain, bloating, and diarrhea. It is suitable for patients with weak digestive function, those who are bedridden after surgery, and those requiring nasogastric feeding. The closed-loop circulating medium has no evaporation loss, eliminating the need for frequent replenishment of the heat exchange medium during long-term use, and simplifying maintenance.

[0039] The knob adjustment mechanism 7 is the manual mode switching component for the entire machine, including a fixed ring 701, a rotating column 702, an adjustment knob 703, a limiting groove 704, a first micro switch 705, a second micro switch 706, a movable top block 707, an arc-shaped pressing block 708, and a return spring 709. The fixed ring 701 is fixedly embedded in the upper surface of the housing 1. The rotating column 702 is coaxially mounted with the central through hole of the fixed ring 701. The top of the rotating column 702 extends upward out of the housing 1, and the end is fastened with the adjustment knob 703. Medical personnel can directly rotate the adjustment knob 703 to drive the rotating column 702 to rotate synchronously in the circumferential direction.

[0040] Multiple sets of limiting grooves 704 are formed on the inner annular wall of the fixed ring 701. The first micro switch 705 and the second micro switch 706 are fixed in the two sets of limiting grooves 704 respectively. The movable top block 707 is slidably assembled in the inner wall of each set of limiting grooves 704. Two return springs 709 are connected to the tail of the movable top block 707. The other end of the return spring 709 is fixed to the inner wall of the groove. When there is no external force, the spring pushes the movable top block 707 away from the micro switch, and the switch remains in the open state.

[0041] An arc-shaped extrusion block 708 is integrally formed on the outer circumference of the rotating column 702. The outer surface of the arc-shaped extrusion block 708 is covered with an anti-slip rubber sleeve to increase the extrusion contact friction. When the adjustment knob 703 is rotated, the arc-shaped extrusion block 708 rotates circumferentially with the rotating column 702, and sequentially extrudes the corresponding movable top block 707. The movable top block 707 slides into the groove, and pressing it triggers the first micro switch 705 or the second micro switch 706, which respectively conducts the flow supply and pipeline flushing control circuit. After the knob is released, the reset spring 709 pulls the movable top block 707 to reset, and the switch is disconnected to stop the corresponding work process.

[0042] Working principle: Before using this device, medical staff first unscrew the sealing cap at the top of the water inlet pipe 106 and add sterile rinsing water into the water storage cavity 103. After adding the water, tighten the sealing cap. Then, unscrew the sealing cap of the liquid food inlet pipe 107, inject the prepared nasogastric liquid food into the liquid food storage box 105, and seal the liquid food inlet pipe 107 to complete the media filling. After the equipment is powered on, the electric heating tube 506 inside the insulation cavity 104 starts heating, and the drive motor 401 starts synchronously. The worm gear 404 at the output end of the motor meshes with the worm wheel 405, driving the drive shaft 402 to rotate continuously. The peristaltic turntable at the end of the drive shaft 402 rotates at a constant speed inside the peristaltic pump housing 301. At the same time, the first synchronous wheel 403 drives the second synchronous wheel 406 to rotate at a low speed through the synchronous belt 407. The linkage shaft 502 drives the guide impeller 503 to continuously push the heat transfer medium inside the insulation cavity 104 to circulate along the circulating liquid inlet pipe 505, the circulating liquid guide shell 501, and the circulating liquid outlet pipe 504, continuously keeping the liquid food storage box 105 at a constant temperature.

[0043] Medical staff rotate the top adjustment knob 703 of the housing 1 according to nursing needs. The knob drives the rotating column 702 and the arc-shaped squeezing block 708 to rotate synchronously, switching between two working modes: The first mode is the automatic liquid food supply mode: rotating the adjustment knob 703, the arc-shaped squeezing block 708 squeezes the corresponding movable top block 707 to press the first micro switch 705. After receiving the signal, the whole machine control circuit opens the first solenoid valve 305 and closes the second solenoid valve 306. The liquid food inside the liquid food storage box 105 is uniformly transported under the action of the peristaltic turntable squeezing the liquid food tube 302. The liquid food enters the three-way connector 303 along the liquid food tube 302, and is transported to the external gastric tube through the opened first solenoid valve 305 and liquid food supply tube 304, and is uniformly and quantitatively delivered into the patient's stomach; the liquid food delivery flow rate and single supply dose are precisely controlled, and the entire process does not require medical staff to push it manually. After the single feeding process is completed, the first micro switch 705 is turned off, the first solenoid valve 305 is automatically closed, and the liquid food supply stops.

[0044] The second mode is the automatic pipeline flushing mode: Reverse rotation of the adjustment knob 703 causes the arc-shaped squeezing block 708 to press against another set of movable top blocks 707, triggering the second microswitch 706. This closes the first solenoid valve 305 and opens the second solenoid valve 306, simultaneously starting the flushing pump 202. The flushing pump 202 draws clean water from the water storage cavity 103. The clean water flows along the flushing water pipe 201 and the second solenoid valve 306 into the three-way connector 303, flushing the entire delivery pipeline in reverse along the liquid food supply pipe 304. The water flow impact force washes away any liquid food residue adhering to the pipe wall. After flushing, closing the knob disconnects the second microswitch 706, stops the flushing pump 202, and closes the second solenoid valve 306, ending the pipeline flushing operation. The automatic flushing function can be activated after each feeding to promptly remove residual liquid food from the pipeline, preventing residue from drying and clogging the pipeline, and promoting bacterial growth, thus reducing the risk of gastrointestinal infection in patients. The entire flushing process is automated, eliminating the need for medical staff to manually draw clean water to flush the pipeline, simplifying the nursing operation process.

Claims

1. A liquid food supply device for digestive care, characterized in that, The device includes a housing (1), which serves as the base for the entire machine and is used to integrate and install all functional components. The inner wall of the housing (1) is fixedly provided with a first partition (101) and a second partition (102). The first partition (101) and the second partition (102) are distributed in a T-shape, and the T-shaped partitions achieve physical separation of the cavity and prevent crosstalk between the media in each area. One side of the first partition (101) is a water storage cavity (103), which is used to independently store sterile water for flushing the pipeline. The other side of the first partition (101) is a heat preservation cavity (104), which constitutes a closed constant temperature heat exchange cavity. A liquid food storage box (105) is fixedly provided inside the heat preservation cavity (104). The liquid food storage box (105) is used to pre-fill the prepared nasal feeding liquid food to achieve constant temperature storage of the liquid food. The housing (1) is equipped with a liquid food supply mechanism (3), a rinsing mechanism (2), a transmission mechanism (4), and a circulating heating mechanism (5). These four mechanisms respectively complete the four core nursing functions of quantitative food delivery, pipeline rinsing, unified power output, and constant temperature insulation. The liquid food supply mechanism (3) includes a peristaltic pump housing (301) fixed on the surface of the second partition (102). The peristaltic pump housing (301) provides a sealed protective installation space for the peristaltic delivery component. A liquid food tube (302) is fixedly embedded on the surface of the liquid food storage box (105). The liquid food tube (302) serves as a flexible pipeline for liquid food delivery. The end of the liquid food tube (302) away from the liquid food storage box (105) passes through the inside of the peristaltic pump housing (301) and is squeezed by rollers to achieve the desired effect. The liquid food is pushed out at a constant speed and in a quantitative manner. A protective cover (6) is fixedly installed on the outside of the shell (1). The protective cover (6) provides physical protection for the exposed pipe joints to prevent them from falling off due to impact or liquid leakage. The output end of the liquid food tube (302) extends into the inside of the protective cover (6) and is fixedly connected to a three-way connector (303). The three-way connector (303) realizes the convergence and diversion of two fluid paths: the liquid food path and the rinsing path. The rinsing mechanism (2) includes a rinsing water pipe (201) fixedly installed at the bottom input end of the three-way connector (303). The rinsing water pipe (201) is used to transport rinsing water. The output end of the three-way connector (303) is fixedly connected to a liquid food supply tube (304). The liquid food supply tube (304) is connected to the patient's gastric tube to complete the delivery of liquid food to the stomach.

2. The liquid food supply device for digestive care according to claim 1, characterized in that: The transmission mechanism (4) is a unified power unit for the whole machine, providing rotational power synchronously for liquid food conveying and medium circulation; the transmission mechanism (4) includes a drive motor (401) fixed to the inner wall of the housing (1), the drive motor (401) outputs rotational torque as the sole power source, and a drive shaft (402) rotatably disposed on the inner wall of the housing (1), the drive shaft (402) is used to transmit motor power, the drive shaft (402) is coaxially distributed with the peristaltic pump housing (301), and the end of the drive shaft (402) away from the drive motor (401) extends into the interior of the peristaltic pump housing (301), the end of the drive shaft (402) is parallel to the peristaltic pump housing (301). The peristaltic turntable inside is fixed coaxially, driving the peristaltic turntable to rotate synchronously and squeeze the liquid feeding tube to achieve liquid delivery; the surface of the drive shaft (402) is fixedly connected to the first synchronous wheel (403), which serves as the power output wheel to transmit power to the heating circulation component; the output end of the drive motor (401) is fixedly connected to the worm (404), which is arranged in a cross shape with the drive shaft (402), and the surface of the drive shaft (402) is fixedly connected to the worm wheel (405). The worm (404) and the worm wheel (405) mesh, and through the cooperation, transmission and self-locking when stopping are achieved, so as to avoid the backflow of liquid in the pipeline after the motor stops and cause accidental discharge.

3. A liquid food supply device for digestive care according to claim 2, characterized in that: The circulating heating mechanism (5) is used to realize the circulation of heat exchange medium inside the heat-insulating cavity and uniformly maintain the constant temperature of the liquid food storage box; the circulating heating mechanism (5) includes a circulating liquid guide shell (501) fixedly connected to the surface of the second partition (102), the circulating liquid guide shell (501) serves as a medium circulation sealed cavity, and a linkage shaft (502) is coaxially rotatably provided at the end of the circulating liquid guide shell (501), the linkage shaft (502) is used to drive the internal impeller to rotate, and the linkage shaft (502) is away from the circulating liquid guide shell ( One end of 501 is fixedly connected to a second synchronous pulley (406), the position of the second synchronous pulley (406) corresponds to that of the first synchronous pulley (403), and a synchronous belt (407) is assembled between the first synchronous pulley (403) and the second synchronous pulley (406). The power is transmitted across components by means of the synchronous belt. The diameter of the first synchronous pulley (403) is six times that of the second synchronous pulley (406), forming an acceleration transmission structure, increasing the impeller speed, allowing the heat exchange medium to circulate, and ensuring that the temperature inside the cavity is uniform and without temperature difference.

4. A liquid food supply device for digestive care according to claim 3, characterized in that: The end of the linkage shaft (502) away from the second synchronous wheel (406) extends into the interior of the circulating liquid guide shell (501) and is fixedly connected to a guide impeller (503). The guide impeller (503) rotates to drive the heat exchange medium to circulate in a directional manner. A circulating liquid outlet pipe (504) is fixedly embedded on the surface of the circulating liquid guide shell (501). The input end of the circulating liquid outlet pipe (504) corresponds to the output end of the guide impeller (503) and is used to output the pressurized high-temperature medium. The surface of the first partition plate (101) A circulating liquid inlet pipe (505) is fixedly embedded. The output end of the circulating liquid inlet pipe (505) extends into the interior of the circulating liquid guide shell (501), and the input end of the circulating liquid inlet pipe (505) extends into the interior of the heat-insulating cavity (104) for recovering the cooled medium. The end of the circulating liquid outlet pipe (504) away from the circulating liquid guide shell (501) extends into the interior of the heat-insulating cavity (104). The circulating liquid inlet pipe and the circulating liquid outlet pipe cooperate to form a closed circulation loop, continuously and evenly heat-exchange and heat-insulate the outer periphery of the liquid food storage box.

5. A liquid food supply device for digestive care according to claim 4, characterized in that: The flushing mechanism (2) is equipped with an independent clean water delivery power to achieve self-cleaning of the high-pressure pipeline; the flushing mechanism (2) also includes a flushing pump (202) fixedly installed on the surface of the second partition (102). The flushing pump (202) independently draws clean water to provide flushing water pressure. The input end of the flushing pump (202) extends into the interior of the water storage cavity (103) to fully draw the clean water stored in the cavity. The end of the flushing water pipe (201) away from the three-way connector (303) is fixedly connected to the output end of the flushing pump (202) to deliver pressurized flushing water; the two input ends of the three-way connector (303) are respectively fixedly installed with a first solenoid valve (305) and a second solenoid valve (306). The two solenoid valves are independently controlled without interlocking. The first solenoid valve (305) and the second solenoid valve (306) correspond to the output ends of the liquid food hose (302) and the flushing water pipe (201) respectively, and independently guide the liquid food passage or the flushing passage to prevent the clean water and liquid food from mixing and contaminating the pipeline and the storage box.

6. A liquid food supply device for digestive care according to claim 5, characterized in that: The inner wall of the insulated cavity (104) is fixedly provided with several electric heating tubes (506). The electric heating tubes (506) serve as heat sources to heat the heat exchange medium inside the cavity. The several electric heating tubes (506) are evenly distributed on one side of the liquid food storage box (105) to provide all-round heating, eliminate local low temperature dead zones, stabilize the liquid food intake temperature, and avoid low temperature liquid food irritating the patient's stomach and intestines and causing discomfort.

7. A liquid food supply device for digestive care according to claim 6, characterized in that: A knob adjustment mechanism (7) is fixedly installed on the upper surface of the housing (1). The knob adjustment mechanism (7) is used to switch between automatic liquid food supply and automatic flushing pipeline functions. It relies on a purely mechanical structure to trigger control signals and stably adapt to the humid environment of the ward disinfection. The knob adjustment mechanism (7) includes a fixing ring (701) fixed on the upper surface of the housing (1). The fixing ring (701) provides a positioning base for the rotating component, and a rotating column (702) rotatably installed on the upper surface of the housing (1). The rotating column (702) rotates synchronously with the knob to realize gear switching. The rotating column (702) and the fixing ring (701) are coaxially distributed, and an adjustment knob (703) is fixedly connected to the top of the rotating column (702). The adjustment knob (703) is exposed above the housing for medical staff to rotate with one hand.

8. A liquid food supply device for digestive care according to claim 7, characterized in that: The inner side of the fixed ring (701) is provided with several limiting grooves (704). The limiting grooves (704) provide installation space for the switch and the top block. The inner walls of the several limiting grooves (704) are respectively fixedly installed with a first micro switch (705) and a second micro switch (706). The two micro switches correspond to the circuit opening and closing of the two working modes of feeding and rinsing, respectively. The inner wall of the limiting groove (704) is slidably installed with a movable top block (707). The movable top block (707) triggers the micro switch by sliding and pressing. The positions of the first micro switch (705) and the second micro switch (706) are both corresponding to the movable top block (707) to ensure that the squeezing action can accurately touch the switch contacts.

9. A liquid food supply device for digestive care according to claim 8, characterized in that: An arc-shaped extrusion block (708) is fixedly connected to the circumferential surface of the rotating column (702). The arc-shaped extrusion block (708) extrudes the movable top block as the rotating column moves in a circular motion. The position of the arc-shaped extrusion block (708) corresponds to that of the movable top block (707). An anti-slip rubber sleeve is fixedly provided on the surface of the arc-shaped extrusion block (708) to increase the friction of the extrusion contact and prevent slippage that would prevent the switch from being triggered. Two return springs (709) are fixedly provided on the inner wall of the limiting groove (704). One end of the return spring (709) is fixedly connected to the surface of the movable top block (707). After the knob is turned away, the spring automatically pulls the top block back, disconnects the micro switch, and stops the corresponding working process.

10. A liquid food supply device for digestive care according to claim 9, characterized in that: The upper surface of the shell (1) is fixedly embedded with a water inlet pipe (106) and a liquid food inlet pipe (107), so that water and liquid food can be added separately and independently to avoid cross-contamination during feeding. The ports of the water inlet pipe (106) and the liquid food inlet pipe (107) are threaded with sealing caps. After the sealing caps are tightened, the pipe openings are closed to prevent dust and bacteria in the ward from entering the cavity. The bottom ends of the water inlet pipe (106) and the liquid food inlet pipe (107) extend into the water storage cavity (103) and the liquid food storage box (105) respectively, so that the medium can be directly added to the corresponding cavity. The operation of opening the cap and adding food is simple and convenient.

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