Double-belt nutrition pump with constant-temperature nutrient solution
By introducing insulation mechanism and support mechanism into the nutrition pump, we ensure that the infusion tube is heated evenly and the height can be adjusted, solving the problems of uneven temperature and large area occupied, and achieving the portability and patient comfort of the nutrition pump.
Patent Information
- Application Number
- CN202510676045.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-24
- Publication Date
- 2025-08-15
AI Technical Summary
The existing nutrition pumps have the problem that the gap position between the infusion tube cannot be heated, resulting in uneven temperature, and the nutrition pump occupies a large area when it is not in use.
The insulation mechanism and support mechanism are designed, including heating components, fixed insulation frame, rotary insulation frame and support mechanism. The semicircular structure ensures uniform heating around the infusion tube, and the height adjustment and portability of the nutrition pump are achieved through the roller and support rod.
The liquid temperature in the infusion tube is uniformly heated, avoiding the low liquid temperature stimulation of the gastrointestinal tract of the patient. The nutritional pump can be stored when not in use, reducing space and easy to carry.
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Figure CN120478165A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of double-belt nutrient pumps, in particular to a double-belt nutrient pump with constant temperature for nutrient solution. Background Art
[0002] Nutrition pumps are nutritional infusion pumps used for enteral nutrition. For patients who are unable to swallow or have difficulty swallowing, or are malnourished, nutrition pumps can effectively deliver nutrient solution to patients to achieve nutritional absorption. In the prior art, a nutrition pump and a mobile nutrition pump are disclosed in publication number CN114642597A. The temperature sensor transmits the temperature of the nutrient solution in the infusion tube to the control and display component. The control and display component displays the temperature information on the temperature display and controls the heating temperature in the heating structure to ensure the constant temperature of the nutrient solution. The cited prior art nutrition pump heats the liquid through a heating structure, thereby maintaining a comfortable temperature inside the patient. However, since the infusion tube needs to be removed and installed, the heating structure cannot be designed as a circular structure. A small gap needs to be left to allow the infusion tube to fit inside the heating structure. Due to the gap, the gap in the infusion tube cannot be heated, resulting in uneven temperature of the liquid inside the infusion tube. The prior art discloses an automatic switching device for a nutrient pump channel with a publication number of CN216536164U. The front end of the liquid-stop clamp device is provided with a cover plate; the rear end of the liquid-stop clamp device 1 is provided with a lifting column; a sliding member is provided on the rear end of the liquid-stop clamp device; a bolt is provided on the side surface of the sliding member, and one end of the bolt is fixedly connected to a clamping plate, the position of the clamping plate is adapted to the lifting column; a knob is provided on the other end of the bolt, and the height of the liquid-stop clamp device can be raised or lowered by rotating the knob; The cited prior art nutrient pump can change the height of the nutrient pump by turning a knob. Since the nutrient pump and the lifting column are located on the outside, when the nutrient pump is not in use, it is generally moved to the side. Since the fixing rod on the nutrient pump is high, the nutrient pump and the fixing rod occupy a larger area.
[0003] Therefore, we proposed a double-belt nutrient pump with constant temperature of nutrient solution to solve the problems raised above. Summary of the Invention
[0004] The purpose of the present invention is to provide a double-belt nutrition pump with constant temperature of nutrient solution, so as to solve the problem raised in the above background technology that due to the existence of gaps in the current market, the gap position of the infusion tube cannot be heated, thereby causing the liquid temperature inside the infusion tube to be uneven; and when the nutrition pump is not in use, the nutrition pump is generally moved to the side, and due to the high height of the fixing rod on the nutrition pump, the nutrition pump and the fixing rod occupy a large area.
[0005] To achieve the above object, the present invention provides the following technical solutions: a double-belt nutrient pump with constant nutrient solution temperature, comprising a nutrient pump body, a protective cover and a roller; A protective cover is rotatably connected to the left and right ends of the nutrition pump body, and the left and right ends of the nutrition pump body are both rotatably connected to rollers; The portable box further comprises: a heat preservation mechanism, which is arranged at the left and right ends of the nutrition pump body, and can keep the nutrition solution delivered by the nutrition pump body warm and heat it, so as to prevent the nutrition solution from being too cold to stimulate the patient's gastrointestinal tract. The nutrition pump body can be placed inside the portable box; A support mechanism is provided inside the portable box, and supports the nutrition pump body through the support mechanism so that the nutrition pump body is located at different heights; The adjusting mechanism is arranged at the lower end of the interior of the portable box, and the position of the supporting mechanism is changed by the adjusting mechanism.
[0006] Preferably, the insulation mechanism includes a heating component, a fixed insulation frame, a rotating insulation frame and a torsion spring. Fixed insulation frames are fixed at both ends of the left and right ends of the nutrient pump body, and the outer side of the fixed insulation frame is rotatably connected to a rotating insulation frame. The cross-sections of the rotating insulation frame and the fixed insulation frame are both semicircular. The semicircular structure facilitates the disassembly and installation of the delivery tube.
[0007] Preferably, heating components are installed on the inner side of the rotating insulation frame and the inner side of the rotating insulation frame, and a torsion spring is arranged between the rotating position of the rotating insulation frame and the fixed insulation frame. The rotating insulation frame and the fixed insulation frame form a complete circle, so that the four sides of the conveying pipe can be in contact with the heating component.
[0008] Preferably, fixed plates are hot-pressed at both ends of the interior of the nutrition pump body, and a delivery pipe passes through the interior of the fixed plate, and the delivery pipe passes through the outside of the roller and the inside of the fixed insulation frame. Moreover, the nutrition pump body is a pulse pressure pump, and there is no need to flush the tube regularly.
[0009] Preferably, the left and right ends of the nutrient pump body are slidably connected with side tooth rows, and the front end of the side tooth row can contact the protective cover, and a support spring is provided between the side tooth row and the inside of the nutrient pump body, and the left and right ends of the inside of the nutrient pump body are rotatably connected with transmission gears, and the rotating insulation frame can be pushed by moving the middle tooth row, and there is no need for manual movement of the rotating insulation frame.
[0010] Preferably, both left and right ends of the nutrition pump body are slidably connected with a middle tooth row, and both the middle tooth row and the side tooth row are meshed with the transmission gear, and the moving directions of the middle tooth row and the side tooth row are opposite.
[0011] Preferably, the middle tooth row is arranged in a "U"-shaped structure, and the left and right ends of the middle tooth row are in contact with the outer end of the rotating insulation frame. The rotating insulation frame forms a rotating structure with the nutrition pump body through the middle tooth row, so that the liquid temperature inside the delivery tube is evenly heated.
[0012] Preferably, the supporting mechanism includes a rotating rod, a fixing device, a limiting plate, a screw rod and a rotating frame. The rear end of the nutrient pump body is hot-pressed with a fixing ring, and the interior of the fixing ring is penetrated by a rotating rod, and the rear end of the fixing ring is threadedly connected to the fixing device. Through the setting of the fixing device, the nutrient pump body can be fixed at different heights.
[0013] Preferably, the inner bottom of the portable case is slidably connected to a sliding block, the outer side of the sliding block is rotatably connected to a rotating rod, and a rotating frame is rotatably connected between the two rotating rods, and the front and rear sides of the rotating frame are both threadedly connected to a screw rod, and the outer end of the screw rod is welded with a limiting plate, which can be fitted with the rotating rod. The adjusting mechanism includes a threaded rod and a sliding block, which can fix two adjacent rotating rods, thereby ensuring the stability of the rotating rod.
[0014] Preferably, a threaded rod is rotatably connected to the lower part of the portable box, and a sliding block is threadedly connected to the outer side of the threaded rod. A display screen is installed at the front end of the nutrition pump body, and control buttons are provided on the left and right sides of the front end of the nutrition pump body.
[0015] Compared with the prior art, the present invention has the following advantages: it can heat the liquid, thereby increasing the temperature of the liquid and heating the liquid evenly; it can adjust the height of the nutrient pump; and it can be folded up when it is no longer in use, making it convenient to carry the nutrient pump later. The specific contents are as follows: 1. The rotating insulation frame forms a circle with the fixed insulation frame, so that all sides of the delivery tube can contact the heating component, so that the liquid inside the delivery tube is heated evenly, the temperature of the liquid is kept high, and the liquid temperature is prevented from being too low to stimulate the patient's stomach and intestines, thus protecting the patient's stomach and intestines; 2. The protective cover rotates to move the middle gear row left and right, and the movement of the middle gear row pushes the rotating insulation frame. During the operation of the protective cover, the fixed insulation frame also rotates accordingly. There is no need to manually cover and open the fixed insulation frame, which is convenient for the staff to install the conveying pipe; 3. The nutrient pump body is a pulse pressure type, so there is no need to flush the tube regularly. The two rollers make the nutrient pump body a double-belt structure, which allows the nutrient pump body to pump nutrient solution while pumping water regularly. 4. Multiple rotating rods are connected by rotation to form a vertical structure. The rotating rods are used to support the nutrition pump body, which can be located at different heights and adjusted according to on-site conditions. At the same time, the setting of the portable box can reduce the overall occupied area and facilitate the carrying of the nutrition pump; 5. The sliding block slides inside the portable box, thereby changing the position of the rotating rod, which can be adjusted according to the current situation. There is no need to adjust the position of the portable box to prevent inconvenience in moving due to small space. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the side cross-sectional structure of the nutrition pump body of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the nutrition pump body of the present invention; Figure 4 This is a schematic diagram of the top-down structure of the protective cover of the present invention after it is closed; Figure 5 This is an enlarged structural diagram of Figure A of the present invention; Figure 6 This is a schematic diagram of the main cross-sectional structure of the portable box of the present invention; Figure 7 It is a schematic diagram of the top cross-section structure of the rotating rod of the present invention.
[0017] In the figure: 1. Nutrition pump body; 2. Protective cover; 3. Side gear row; 4. Heating component; 5. Fixed insulation frame; 6. Fixed plate; 7. Roller; 8. Delivery tube; 9. Display screen; 10. Rotating insulation frame; 11. Transmission gear; 12. Support spring; 13. Fixing device; 14. Turning rod; 15. Fixing ring; 16. Middle gear row; 17. Torsion spring; 18. Portable box; 19. Through hole; 20. Threaded rod; 21. Limiting plate; 22. Screw; 23. Rotating frame; 24. Control button; 25. Sliding block. DETAILED DESCRIPTION
[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, and not all of them are indirectly connected. For those of ordinary skill in the art, the above terms can be understood in specific circumstances. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts are within the scope of protection of the present invention.
[0019] See also Figure 1-Figure 7 , the present invention provides a technical solution: a double-belt nutrient pump with constant temperature of nutrient solution, comprising a nutrient pump body 1, a protective cover 2 and a roller 7; The protective cover 2 is rotatably connected to the left and right ends of the nutrition pump body 1, and the left and right ends of the nutrition pump body 1 are rotatably connected to rollers 7; further comprising: a display screen 9 is installed at the front end of the nutrition pump body 1, and control buttons 24 are provided on the left and right sides of the front end of the nutrition pump body 1; the left and right ends of the nutrition pump body 1 are hot-pressed with fixed plates 6, and the interior of the fixed plates 6 is penetrated by a delivery pipe 8, and the delivery pipe 8 passes through the outside of the rollers 7 and the inside of the fixed insulation frame 5, and the nutrition pump body 1 is a pulse pressure pump; Combine Figure 1-Figure 2 As shown, the temperature of the heating component 4 can be set by the control button 24, and the normal operation of the nutrition pump body 1 can be controlled. The nutrition pump body 1 uses a double-belt delivery pipe 8, one delivery pipe 8 is used to pump nutrient solution, and the other delivery pipe 8 is used to pump water and extract water. The nutrition pump body 1 adopts a pulse pressure type, and there is no need to flush the pipe regularly; Example 1
[0020] A double-belt nutrient pump with constant temperature for nutrient solution, with heat preservation mechanisms provided at the left and right ends of the nutrient pump body 1. The heat preservation mechanisms can keep the nutrient solution delivered by the nutrient pump body 1 warm and heat it, preventing the nutrient solution from being too cold to stimulate the patient's gastrointestinal tract. The nutrient pump body 1 can be placed inside a portable box 18; The insulation mechanism includes a heating component 4, a fixed insulation frame 5, a rotating insulation frame 10 and a torsion spring 17. The fixed insulation frame 5 is fixed to both ends of the left and right ends of the nutrition pump body 1, and the outer side of the fixed insulation frame 5 is rotatably connected to the rotating insulation frame 10, and the cross-sections of the rotating insulation frame 10 and the fixed insulation frame 5 are both semicircular; the left and right ends of the nutrition pump body 1 are slidably connected to the middle tooth row 16, and the middle tooth row 16 and the side tooth row 3 are both engaged with the transmission gear 11, and the moving directions of the middle tooth row 16 and the side tooth row 3 are opposite.
[0021] The middle tooth row 16 is arranged in a "U"-shaped structure, and the left and right ends of the middle tooth row 16 are in contact with the outer end of the rotating insulation frame 10. The rotating insulation frame 10 forms a rotating structure with the nutrition pump body 1 through the middle tooth row 16; The inner side of the rotating heat preservation frame 10 and the inner side of the rotating heat preservation frame 10 are both installed with a heating assembly 4, and a torsion spring 17 is provided between the rotating heat preservation frame 10 and the position where the fixed heat preservation frame 5 rotates; the left and right ends of the nutrition pump body 1 are slidably connected with the side tooth row 3, and the front end of the side tooth row 3 can contact the protective cover 2, and a support spring 12 is provided between the side tooth row 3 and the inside of the nutrition pump body 1, and the left and right ends of the inside of the nutrition pump body 1 are rotatably connected with the transmission gear 11; Combine Figure 2-Figure 5As shown, before installing the conveying pipe 8, the protective covers 2 on both sides are opened. When the protective covers 2 are opened, they no longer interfere with the side gear rows 3. At this time, the elastic force of the support spring 12 causes the side gear rows 3 to move outward. During the process of the side gear rows 3 moving outward, the transmission gear 11 rotates. The rotation of the transmission gear 11 causes the middle gear row 16 to move to the middle position. The middle gear row 16 moves to the middle position and separates from the rotating insulation frame 10. At this time, the elastic force of the torsion spring 17 causes the rotating insulation frame 10 to rotate outward. Then, the conveying pipe 8 is manually opened as shown in FIG. Figure 1 As shown in the installation, after the delivery pipe 8 is installed, the protective cover 2 is covered. When the protective cover 2 is rotated to contact with the side tooth row 3, the protective cover 2 pushes the side tooth row 3, thereby moving the side tooth row 3 to the middle position, and the side tooth row 3 causes the transmission gear 11 to rotate in the opposite direction. The transmission gear 11 rotates in the opposite direction to rotate the middle tooth row 16, thereby causing the middle tooth row 16 to move outward. The middle tooth row 16 moves outward to push the rotating insulation frame 10, thereby causing the rotating insulation frame 10 to rotate. When the protective cover 2 is covered, the rotating insulation frame 10 is rotated to contact with the fixed insulation frame 5, thereby wrapping the heating component 4 around the delivery pipe 8, thereby making the heating temperature around the delivery pipe 8 the same, thereby heating the liquid inside the delivery pipe 8, preventing the liquid temperature from being too low to stimulate the patient's gastrointestinal tract, and preventing the patient from having abdominal pain and diarrhea; Example 2
[0022] A dual-belt nutrient pump with constant nutrient solution temperature, wherein the support mechanism is arranged inside a portable box 18, and the nutrient pump body 1 is supported by the support mechanism so that the nutrient pump body 1 is located at different heights; The supporting mechanism includes a rotating rod 14, a fixing device 13, a limiting plate 21, a screw rod 22 and a rotating frame 23. The rear end of the nutrition pump body 1 is hot-pressed with a fixing ring 15, and the interior of the fixing ring 15 is penetrated by the rotating rod 14, and the rear end of the fixing ring 15 is threadedly connected to the fixing device 13; the outer side of the sliding block 25 is rotatably connected to the rotating rod 14, and the rotating frame 23 is rotatably connected between the two rotating rods 14, and the front and rear sides of the rotating frame 23 are both threadedly connected with the screw rod 22, and the outer end of the screw rod 22 is welded to the limiting plate 21, and the limiting plate 21 can fit with the rotating rod 14; through holes 19 are opened on the rotating rod 14 at equal intervals; Combine Figure 6-Figure 7 As shown, the height of the nutrition pump body 1 can be adjusted by setting the rotating rod 14. The uppermost rotating rod 14 is pulled upward by hand, and the upper rotating rod 14 drives the lower rotating rod 14 to move upward until the rotating rod 14 remains vertical. Then, the limiting plate 21 is rotated by hand. The rotation of the limiting plate 21 drives the screw rod 22 to rotate synchronously. During the rotation of the screw rod 22, it moves synchronously toward the side close to the rotating rod 14 until the limiting plate 21 rotates to the point where it can no longer rotate. At this time, the limiting plate 21 and the rotating rod 14 are in contact with each other to fix the rotating rod 14 and prevent the rotating rod 14 from rotating. Example 3
[0023] A dual-belt nutrient pump for constant temperature nutrient solution, with an adjustment mechanism disposed at the lower end of a portable case 18, and the position of the support mechanism is changed by the adjustment mechanism; a sliding block 25 is slidably connected to the bottom of the portable case 18, and the adjustment mechanism includes a threaded rod 20 and the sliding block 25; A threaded rod 20 is rotatably connected to the lower portion of the interior of the portable case 18, and a sliding block 25 is threadedly connected to the outer side of the threaded rod 20; Combine Figure 6 and Figure 3 As shown, the fixing ring 15 is then put on the outside of the rotating rod 14. After the nutrition pump body 1 is moved to the appropriate position, the fixing device 13 is rotated by hand. During the rotation process, the fixing device 13 is synchronously engaged with the inside of the through hole 19, thereby limiting the nutrition pump body 1 and allowing the nutrition pump body 1 to be installed at different heights.
[0024] In the description of the present invention, unless otherwise specified, "plurality" means two or more; terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or through the specific meaning in the present invention.
[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A double-belt nutrient pump for constant temperature nutrient solution, comprising a nutrient pump body (1), a protective cover (2) and a roller (7); A protective cover (2) is rotatably connected to the left and right ends of the nutrition pump body (1), and the left and right ends of the nutrition pump body (1) are both rotatably connected to rollers (7); It is characterized by: Also includes: The heat preservation mechanism is arranged at the left and right ends of the nutrition pump body (1). The nutrition solution delivered by the nutrition pump body (1) can be kept warm and heated by the heat preservation mechanism to prevent the nutrition solution from being too cold and irritating the patient's gastrointestinal tract. The nutrition pump body (1) can be placed inside the portable box (18); A support mechanism is provided inside the portable box (18), and supports the nutrition pump body (1) through the support mechanism, so that the nutrition pump body (1) is located at different heights; The adjustment mechanism is arranged at the lower end of the interior of the portable box (18), and the position of the support mechanism is changed by the adjustment mechanism.
2. A dual-belt nutrient pump for constant temperature nutrient solution according to claim 1, characterized in that: The heat preservation mechanism comprises a heating component (4), a fixed heat preservation frame (5), a rotating heat preservation frame (10) and a torsion spring (17). The fixed heat preservation frames (5) are fixed to both the left and right ends of the nutrition pump body (1), and the outer side of the fixed heat preservation frame (5) is rotatably connected to the rotating heat preservation frame (10). The cross-sections of the rotating heat preservation frame (10) and the fixed heat preservation frame (5) are both semicircular.
3. A dual-belt nutrient pump for constant temperature nutrient solution according to claim 2, characterized in that: The inner side of the rotating heat-insulating frame (10) and the inner side of the rotating heat-insulating frame (10) are both installed with a heating assembly (4), and a torsion spring (17) is provided between the rotating heat-insulating frame (10) and the rotating position of the fixed heat-insulating frame (5).
4. A dual-belt nutrient pump for constant temperature nutrient solution according to claim 1, characterized in that: The left and right ends of the nutrition pump body (1) are both hot-pressed with fixed plates (6), and the interior of the fixed plate (6) is penetrated by a delivery pipe (8), and the delivery pipe (8) passes through the outside of the roller (7) and the interior of the fixed insulation frame (5), and the nutrition pump body (1) is a pulse pressure pump.
5. The dual-belt nutrient pump for constant temperature nutrient solution according to claim 1, characterized in that: The left and right ends of the nutrition pump body (1) are both slidably connected to side tooth rows (3), and the front ends of the side tooth rows (3) can contact the protective cover (2), and a support spring (12) is provided between the side tooth rows (3) and the inside of the nutrition pump body (1), and the left and right ends of the inside of the nutrition pump body (1) are both rotatably connected to transmission gears (11).
6. A dual-belt nutrient pump for constant temperature nutrient solution according to claim 1, characterized in that: The left and right ends of the nutrition pump body (1) are both slidably connected to the inside of a middle tooth row (16), and both the middle tooth row (16) and the side tooth row (3) are meshed with the transmission gear (11), and the movement directions of the middle tooth row (16) and the side tooth row (3) are opposite.
7. A dual-belt nutrient pump for constant temperature nutrient solution according to claim 6, characterized in that: The middle tooth row (16) is arranged in a "U"-shaped structure, and the left and right ends of the middle tooth row (16) are in contact with the outer end of the rotating heat-insulating frame (10), and the rotating heat-insulating frame (10) forms a rotating structure with the nutrition pump body (1) through the middle tooth row (16).
8. The dual-belt nutrient pump for constant temperature nutrient solution according to claim 1, characterized in that: The support mechanism comprises a rotating rod (14), a fixing device (13), a limiting plate (21), a screw rod (22) and a rotating frame (23); a fixing ring (15) is hot-pressed on the rear end of the nutrition pump body (1), and the interior of the fixing ring (15) is penetrated by the rotating rod (14), and the rear end of the fixing ring (15) is threadedly connected to the fixing device (13), and through holes (19) are opened on the rotating rod (14) at equal intervals.
9. The dual-belt nutrient pump for constant temperature nutrient solution according to claim 1, characterized in that: The bottom of the interior of the portable box (18) is slidably connected to a sliding block (25), the outer side of the sliding block (25) is rotatably connected to a rotating rod (14), and a rotating frame (23) is rotatably connected between the two rotating rods (14), and the front and rear sides of the rotating frame (23) are both threadedly connected to a screw rod (22), and the outer end of the screw rod (22) is welded with a limit plate (21), and the limit plate (21) can be fitted with the rotating rod (14), and the adjustment mechanism includes a threaded rod (20) and a sliding block (25).
10. The dual-belt nutrient pump for constant temperature nutrient solution according to claim 9, characterized in that: A threaded rod (20) is rotatably connected to the lower portion of the interior of the portable box (18), and a sliding block (25) is threadedly connected to the outer side of the threaded rod (20). A display screen (9) is installed at the front end of the nutrition pump body (1), and control buttons (24) are provided on both left and right sides of the front end of the nutrition pump body (1).
Citation Information
Patent Citations
Nutrition pump and movable nutrition pump
CN114642597A
Nutrition pump channel automatic switching device
CN216536164U