Pumping structure of folding fluid pump

Abstract

The utility model discloses a pumping structure of a folding type fluid pump, and relates to the technical field of folding type fluid conveying devices. The device comprises an elastic metal bag and a connecting disc, a fluid bag cavity is formed in the middle of each elastic metal bag, the elastic metal bags and the connecting discs are alternately distributed, the connecting discs and the elastic metal bags are coaxially arranged, the outer diameter of each connecting disc is smaller than that of the corresponding elastic metal bag, and the elastic metal bags are arranged in the fluid bag cavities. The elastic metal bag and the connecting disc are combined to form a folded corrugated structure; through holes are formed in the connecting discs, and every two adjacent elastic metal bags communicate with each other through the through holes; and the folded corrugated structure is provided with an inlet and an outlet which are communicated with each other. The metal bag of the pumping structure of the folding fluid pump has high strength and is prevented from being broken by sharp objects; by arranging the connecting disc, the connecting area between the two elastic metal bags is increased, and the risk that the pumping structure of the folding type fluid pump is broken at the connecting position between the two elastic metal bags is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of foldable fluid conveying devices, in particular to a pumping structure of a foldable fluid pump. Background Art

[0002] The pumping structure of the foldable fluid pump is a structure with a wrinkled and corrugated cavity surface, which can realize fluid transportation by changing the volume. The fluid can be a liquid or a gas, such as a sequential foldable artificial blood pump, an artificial heart and its control method disclosed in CN114367030B in the prior art, or a foot-operated air pump in the prior art. The pumping structure of these foldable fluid pumps is usually made of plastic or rubber, which is easily broken by some sharp objects during use, and the wrinkle connection area between two adjacent cavities is relatively small, and the wrinkles between two adjacent cavities are easily broken. Therefore, there is room for improvement. Utility Model Content

[0003] In order to overcome at least one defect of the above-mentioned prior art, the utility model provides a pumping structure of a foldable fluid pump. A connecting plate is arranged between two elastic metal bladders to increase the connection area between the two elastic metal bladders. At the same time, the material of the elastic metal bladder has better material strength performance than traditional plastic or rubber materials, thereby preventing the pump bladder from being broken by sharp objects and reducing the risk of breakage at the folded connection.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a pumping structure of a foldable fluid pump, comprising: an elastic metal bladder and a connecting disk; a plurality of the elastic metal bladders are provided, a fluid sac cavity is provided in the middle of each of the elastic metal bladders, the elastic metal bladders and the connecting disk are alternately distributed, the connecting disk and the elastic metal bladder are coaxially arranged, the outer diameter of the connecting disk is smaller than the outer diameter of the elastic metal bladder, and the elastic metal bladder and the connecting disk are combined to form a folded corrugated structure; a through hole is provided on the connecting disk, and two adjacent elastic metal bladders are interconnected through the through hole; the folded corrugated structure is provided with an inlet and an outlet that are interconnected.

[0005] Furthermore, the elastic metal bag is sealed and fixed to the opposite side of the connecting disk.

[0006] Furthermore, the pumping structure of the foldable fluid pump also includes a fixed seat and a driving seat, the fixed seat and the driving seat are respectively fixedly connected to two ends of the folded corrugated structure, and the fixed seat, the driving seat and the folded corrugated structure are coaxially arranged.

[0007] Furthermore, the inlet passes through the fixing seat or the driving seat to be communicated with the folded corrugated structure; the outlet passes through the fixing seat or the driving seat to be communicated with the folded corrugated structure.

[0008] Furthermore, the elastic metal sac includes: two metal sheets; the middle part of one of the metal sheets protrudes upward to form a first groove, and the middle part of the other metal sheet protrudes downward to form a second groove, the edges of the two metal sheets are sealed and fixed to each other, and the first groove and the second groove together form the fluid sac cavity.

[0009] Furthermore, the thickness of the metal sheet is 0.1 mm-0.5 mm.

[0010] Furthermore, fixing holes are provided on the fixing seat and the driving seat.

[0011] The beneficial effects of the utility model are as follows: a pumping structure of a foldable fluid pump includes an elastic metal bladder and a connecting disk; a plurality of elastic metal bladders are provided, a fluid bladder cavity is provided in the middle of each elastic metal bladder, the elastic metal bladders and the connecting disk are alternately distributed, the connecting disk and the elastic metal bladder are coaxially arranged, the outer diameter of the connecting disk is smaller than the outer diameter of the elastic metal bladder, the elastic metal bladder and the connecting disk are alternately combined to form a folded corrugated structure; the elastic bladder of the folded corrugated structure is made of metal, which increases the strength of the pumping structure of the foldable fluid pump and reduces the damage to the pumping structure of the foldable fluid pump caused by contact with sharp objects, and at the same time, a connecting disk is provided between two adjacent elastic metal bladders, and the contact area between the two adjacent elastic metal bladders is increased by the connecting disk, thereby increasing the strength of the connection between the two elastic metal bladders, and avoiding the folded corrugated structure from being broken and damaged at the connection between the two adjacent elastic metal bladders due to repeated contraction and relaxation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 is a front view of the pumping structure of the folding fluid pump;

[0014] Figure 2 is a three-dimensional diagram of a pumping structure of a folding fluid pump;

[0015] Figure 3 is a cross-sectional view of a pumping structure of a folding fluid pump;

[0016] Figure 4 It is an exploded schematic diagram of the pumping structure of the folding fluid pump;

[0017] Figure 5It is an exploded schematic diagram of the pumping structure of the folding fluid pump in another direction;

[0018] Figure 6 is a schematic structural diagram of a fluid pump with a pumping structure of the present application;

[0019] Figure 7 is a cross-sectional view of a fluid pump with a pumping structure of the present application.

[0020] Explanation of the accompanying drawings: 1. Elastic metal bladder; 2. Connecting plate; 11. Fluid bladder cavity; 21. Through hole; 3. Fixed seat; 31. Inlet; 32. Fixed hole; 4. Driving seat; 41. Outlet; 12. Metal sheet; 5. One-way valve. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0022] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0023] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0024] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of some utility models, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0026] This embodiment relates to a pumping structure of a foldable fluid pump, such as Figure 1-5As shown, it includes: an elastic metal capsule 1 and a connecting disk 2; there are multiple elastic metal capsules 1, each elastic metal capsule 1 is provided with a fluid capsule cavity 11 in the middle, the elastic metal capsules 1 and the connecting disk 2 are alternately distributed, the connecting disk 2 and the elastic metal capsule 1 are coaxially arranged, the outer diameter of the connecting disk 2 is smaller than the outer diameter of the elastic metal capsule 1, and the elastic metal capsule 1 and the connecting disk 2 are alternately combined to form an elastic folded corrugated structure; a through hole 21 is provided on the connecting disk 2, and two adjacent elastic metal capsules 1 are interconnected through the through hole 21; the folded corrugated structure is provided with an inlet 31 and an outlet 41 that are interconnected. The folded corrugated structure can shrink under the action of an external force so that the volume of the elastic metal capsule 1 is reduced; or the folded corrugated structure can be reset and expanded under the action of its own restoring force or an external force, so that the volume of the elastic metal capsule 1 is restored.

[0027] Furthermore, the elastic metal bladder 1 is sealed and fixed to the opposite side of the connecting disk 2. The number of connecting disks 2 is one less than the number of elastic metal bladders 1. A connecting disk 2 is arranged between two adjacent elastic metal bladders 1, and the upper and lower surfaces of the connecting disk 2 are completely fitted and fixed to the two adjacent elastic metal bladders 1. Preferably, the connecting disk 2 is circular but not limited to a circular shape, and the connecting disk 2 is sealed and fixed to the elastic metal bladder 1 by vulcanization or welding. The connecting disk 2 can be made of lightweight metal, such as aluminum alloy or tin alloy. In other embodiments, the connecting disk 2 can be made of sealing silicone or sealing rubber. The distance from the inner diameter to the outer diameter of the connecting disk 2 is 5-10 mm.

[0028] The elastic bladder of the folded corrugated structure is made of metal, which increases the strength of the pumping structure of the foldable fluid pump and reduces the damage to the pumping structure of the foldable fluid pump caused by contact with sharp objects. At the same time, a connecting plate 2 is arranged between two adjacent elastic metal bladders 1, and the contact area between the two adjacent elastic metal bladders 1 is increased by the connecting plate 2, thereby increasing the strength of the connection between the two elastic metal bladders 1, and avoiding the folded corrugated structure from being broken and damaged at the connection between the two adjacent elastic metal bladders 1 due to multiple contractions and expansions.

[0029] like Figure 6 , 7 As shown, the pumping structure of the utility model can be used as a part of a fluid pump. For example, a one-way valve 5 is provided at both the inlet 31 and the outlet 41 of the pumping structure to form a fluid pump with a folded corrugated structure. The fluid capsule 11 of the folded corrugated structure can realize the change of volume and the pumping function without designing a plunger in the cylinder like a plunger pump. Since there is no plunger, the mechanical wear in the fluid capsule 11 is reduced. The fluid pump made of the pumping structure of the utility model can replace the air pump, peristaltic pump or diaphragm pump of the prior art to realize the pumping function of the fluid.

[0030] Optionally, the pumping structure of the foldable fluid pump further includes a fixing seat 3 and a driving seat 4, the fixing seat 3 and the driving seat 4 are respectively fixedly connected to the two ends of the foldable corrugated structure, and the fixing seat 3, the driving seat 4 and the foldable corrugated structure are coaxially arranged. External power can act on the driving seat 4 to achieve the contraction and extension of the foldable corrugated structure, thereby causing the elastic metal bag 1 to contract and expand. The external power can be manpower or a device that transmits linear reciprocating power, such as a hydraulic rod or a cylinder.

[0031] Preferably, the driving seat 4 and the fixing seat 3 are both disc-shaped, and the diameters of the driving seat 4 and the fixing seat 3 are equal to the diameters of the elastic metal bladder 1; in other embodiments, the diameters of the driving seat 4 and the fixing seat 3 are slightly larger or slightly smaller than the diameters of the elastic metal bladder 1. By arranging the driving seat 4 and the fixing seat 3 at both ends of the folded corrugated structure, the force acting on the folded corrugated structure is more uniform.

[0032] Optionally, the inlet 31 or the outlet 41 passes through the fixed seat 3 or the driving seat 4 and is connected to the folded corrugated structure. Preferably, the inlet 31 and the outlet 41 pass through the middle of the fixed seat 3 and the driving seat 4 respectively. The fixed seat 3 and the driving seat 4 are made of hard material. The fixed seat 3 is fixedly connected to the elastic metal bladder 1 on one side of the folded corrugated structure, and the driving seat 4 is fixedly connected to the elastic metal bladder 1 on the other side of the folded corrugated structure.

[0033] Furthermore, the elastic metal capsule 1 includes: two metal sheets 12; the middle part of one metal sheet 12 protrudes upward to form a first groove, and the middle part of the other metal sheet 12 protrudes downward to form a second groove, the edges of the two metal sheets 12 are sealed and fixed to each other, and the first groove and the second groove together form a fluid capsule cavity 11. In this embodiment, the metal sheet 12 is a plane, an inclined surface and a plane from the outside to the inside, so that a groove with a trapezoidal cross-section is formed in the middle of the metal sheet 12, and the depth of the groove is 0.5mm-2.5mm. The outer diameter of the connecting plate 2 is smaller than the outer diameter of the plane of the metal sheet 12 located on the inside.

[0034] Specifically, in order to facilitate the contraction of the elastic metal sac 1 and the resetting and expansion under the action of the restoring force, the thickness of the metal sheet 12 is 0.1mm-0.5mm. The metal sheet 12 is made of a metal with good toughness, such as a memory alloy, a titanium-nickel alloy, a gold-cadmium alloy, a copper-zinc alloy or stainless steel. Optionally, a fixing hole 32 is provided on the fixing seat 3 and the driving seat 4. A fixing member such as a bolt can fix the fixing seat 3 to the outside such as a fixing frame or the ground through the fixing hole 32, and a fixing member such as a screw can fix the power output end of an external power such as a hydraulic cylinder or a cylinder to the driving seat 4 through the fixing hole 32. The fixing seat 3 and the driving seat 4 are both made of metal, such as aluminum alloy, stainless steel and other metals.

[0035] The above is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A pumping structure of a foldable fluid pump, characterized in that: include: An elastic metal bag (1) and a connecting plate (2); The elastic metal sacs (1) are provided in plurality, each of which is provided with a fluid sac cavity (11) in the middle thereof, the elastic metal sacs (1) and the connecting disks (2) are alternately distributed, the connecting disks (2) and the elastic metal sacs (1) are coaxially arranged, the outer diameter of the connecting disks (2) is smaller than the outer diameter of the elastic metal sacs (1), and the elastic metal sacs (1) and the connecting disks (2) are combined to form a folded corrugated structure; the connecting disks (2) are provided with through holes (21), and two adjacent elastic metal sacs (1) are interconnected through the through holes (21); and the folded corrugated structure is provided with an inlet (31) and an outlet (41) that are interconnected.

2. The pumping structure of the foldable fluid pump according to claim 1, characterized in that: The elastic metal bag (1) is sealed and fixed to the opposite side of the connecting plate (2).

3. The pumping structure of the foldable fluid pump according to claim 1, characterized in that: The pumping structure of the foldable fluid pump further comprises a fixed seat (3) and a driving seat (4), wherein the fixed seat (3) and the driving seat (4) are respectively fixedly connected to two ends of the foldable corrugated structure, and the fixed seat (3), the driving seat (4) and the foldable corrugated structure are coaxially arranged.

4. The pumping structure of the foldable fluid pump according to claim 3, characterized in that: The inlet (31) passes through the fixing seat (3) or the driving seat (4) and is connected to the folded corrugated structure; The outlet (41) passes through the fixing seat (3) or the driving seat (4) and is connected to the folded corrugated structure.

5. The pumping structure of the foldable fluid pump according to claim 1, characterized in that: The elastic metal bag (1) comprises: two metal sheets (12); The middle part of one of the metal sheets (12) protrudes upward to form a first groove, and the middle part of the other metal sheet (12) protrudes downward to form a second groove. The edges of the two metal sheets (12) are sealed and fixed to each other, and the first groove and the second groove together enclose the fluid cavity (11).

6. The pumping structure of the foldable fluid pump according to claim 5, characterized in that: The thickness of the metal sheet (12) is 0.1 mm to 0.5 mm.

7. The pumping structure of the foldable fluid pump according to claim 3, characterized in that: The fixing seat (3) and the driving seat (4) are both provided with fixing holes (32).

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