High-pressure-resistant diaphragm infusion device

Abstract

The utility model discloses a high pressure resistant diaphragm transfusion device, including main part, membrane cavity, diaphragm and drive mechanism, the membrane cavity is provided in the main part and is used for pumping liquid, the diaphragm is provided on one side of the membrane cavity, the drive mechanism is connected with the diaphragm through the connector and is used for making the diaphragm act to change the volume of the membrane cavity, a backing ring moving along with the diaphragm is arranged between the connector and the diaphragm, and a blocking part used for limiting the moving range of the backing ring is arranged on the body. The high-pressure-resistant diaphragm infusion device has the advantages that the service life is prolonged, the high-pressure-resistant capacity is improved, and the overall size, weight and occupied space are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to food, medicine packing mechanical equipment technical field, concretely relates to a kind of high-pressure diaphragm infusion device. BACKGROUND

[0002] The Chinese patent document with the existing application number CN202311719079.9 discloses a liquid delivery device, specifically discloses a main body, an inlet flow channel and an outlet flow channel arranged on the main body, the inlet flow channel and the outlet flow channel are communicated with a membrane cavity through a first one-way valve, the membrane cavity is provided with a diaphragm and a driving mechanism for changing the volume of the membrane cavity by driving the diaphragm, the driving mechanism includes a push-pull rod and a driving assembly for driving the push-pull rod to reciprocate, one end of the push-pull rod is provided with a connector, the middle part of the connector is provided with a connecting part connected with the diaphragm, the outer periphery of the connector at the connecting part is provided with a diaphragm pushing part, one side of the diaphragm pushing part facing the diaphragm is a concave annular arc surface, the main body is provided with an oil cavity between the diaphragm and the push-pull rod, and the oil cavity is connected with an oil supplementing mechanism. The applicant found that the liquid delivery device still has the following improvements:

[0003] 1) Although the service life of the diaphragm is good, there is still a large gap between the driving assembly and the main body, and the diaphragm at the gap is easily subjected to concentrated stress during the movement of the diaphragm driven by the driving mechanism, which causes large deformation. If the concentrated stress on the diaphragm at the gap can be reduced, the service life of the diaphragm can be further improved.

[0004] 2) In order to improve the pressure resistance of the diaphragm, the oil cavity needs to be supplied with oil by the oil supplementing mechanism. However, the oil supplementing mechanism needs to occupy a large space, making the overall volume and weight large. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art, and to provide a high-pressure diaphragm infusion device that improves the service life and pressure resistance, reduces the overall volume, weight and occupied space.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A high-pressure diaphragm infusion device includes a main body, a membrane cavity, a diaphragm and a driving mechanism. The membrane cavity is arranged in the main body for pumping liquid. The diaphragm is arranged on one side of the membrane cavity. The driving mechanism is connected to the diaphragm through a connector and is used to change the volume of the membrane cavity by driving the diaphragm. A gasket ring is arranged between the connector and the diaphragm and moves with the diaphragm. A blocking part is arranged on the main body to limit the movement range of the gasket ring.

[0008] As a further improvement of the above technical solution:

[0009] The top of the gasket ring is provided with a pushed surface pushed by the connecting head, and the bottom surface of the gasket ring abuts against the diaphragm.

[0010] The gasket ring is lifted and slides in the main body.

[0011] The main body is provided with a guide column surface, and the outer peripheral surface of the gasket ring is slidably matched with the guide column surface.

[0012] The blocking part is a step surface provided on the top of the guide column surface.

[0013] The gasket ring is provided with one, and the blocking part is correspondingly arranged above the gasket ring.

[0014] The gasket ring and the blocking part are both provided with a plurality of ones, each of the blocking parts is correspondingly arranged above each of the gasket rings, and each of the gasket rings is stacked above and below.

[0015] The diaphragm is provided with a plurality of layers.

[0016] The middle part of the connecting head is provided with a connecting part connected with the diaphragm, the connecting head is provided with a membrane pushing part on the outer periphery of the connecting part, and one side of the membrane pushing part facing the diaphragm is a ring-shaped arc surface with a recessed middle part.

[0017] The driving mechanism comprises a push-pull rod and a driving assembly for driving the push-pull rod to reciprocate, and the driving assembly is connected with the connecting head through the push-pull rod.

[0018] Compared with the prior art, the advantages of the utility model lie in that:

[0019] The anti-high-pressure diaphragm infusion device of the utility model, the gasket ring moves with the diaphragm, that is, moves with the diaphragm in the direction of the membrane cavity, when the gasket ring is blocked by the blocking part, the gasket ring is stationary, the driving mechanism drives the connecting head and the middle part of the diaphragm to continue to move away from the membrane cavity, in the process that the diaphragm continues to move away from the membrane cavity, the gasket ring abuts against the diaphragm in the gap between the connecting head and the main body, the concentrated stress of the diaphragm at the gap can be reduced, so that the service life of the diaphragm is further improved.

[0020] This invention relates to a high-pressure diaphragm infusion device. A movable gasket is incorporated between the connector and the diaphragm. During the movement of the diaphragm's center relative to the membrane cavity in both directions driven by the connector, the gasket effectively presses against the diaphragm within the gap between the connector and the main body. This reduces concentrated stress on the diaphragm at this gap, resulting in smoother overall diaphragm deformation and thus improving the diaphragm's service life and high-pressure resistance. Furthermore, the gasket significantly enhances the diaphragm's high-pressure resistance, enabling it to withstand high pressure. This eliminates the need for a separate oil replenishment mechanism to provide hydraulic support for the diaphragm, reducing overall size, weight, and space requirements. Attached Figure Description

[0021] Figure 1 This is a front view schematic diagram of one embodiment of the high-pressure diaphragm infusion device of this utility model.

[0022] Figure 2 yes Figure 1 A magnified structural diagram of point A in the middle.

[0023] Figure 3 yes Figure 1 A magnified structural diagram at point B in the middle.

[0024] Figure 4 This is a front view schematic diagram of another embodiment of the high-pressure diaphragm infusion device of this utility model.

[0025] Figure 5 yes Figure 4 A magnified structural diagram at point C.

[0026] Figure 6 yes Figure 4 A magnified structural diagram at point D.

[0027] The labels in the diagram represent:

[0028] 1. Main body; 11. Guide column surface; 2. Membrane cavity; 3. Diaphragm; 4. Drive mechanism; 41. Push-pull rod; 42. Drive assembly; 5. Connector; 51. Connecting part; 52. Membrane pushing part; 53. Annular arc surface; 6. Washer ring; 61. Pushing surface; 7. Blocking part. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] In the description of the utility model, it is understood that the directions or position relations indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are the directions or position relations shown based on the drawings, and are only for the convenience of describing the utility model and simplifying the description, and thus cannot be understood as indicating or implying that the devices or elements indicated must have a specific direction, be constructed and operated in a specific direction, and thus cannot be understood as limiting the utility model.

[0031] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0032] In the utility model, unless otherwise specified and limited, the terms "assembly", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrated; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium; can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0033] Embodiment one:

[0034] Figures 1 to 3 An embodiment of the utility model anti high pressure diaphragm infusion device is shown, the anti high pressure diaphragm infusion device of this embodiment, including main body 1, membrane cavity 2, diaphragm 3 and drive mechanism 4, membrane cavity 2 is arranged in main body 1 and is used for pumping liquid, diaphragm 3 is arranged in one side of membrane cavity 2, drive mechanism 4 is connected with diaphragm 3 through connecting head 5, is used for making diaphragm 3 action changes the volume of membrane cavity 2, connecting head 5 and diaphragm 3 between being equipped with with the action of diaphragm 3 gasket ring 6, main body 1 is equipped with the blocking portion 7 for limiting the action range of gasket ring 6.

[0035] The liquid extraction process of the anti-high pressure diaphragm infusion device: the driving mechanism 4 drives the connecting head 5 and the diaphragm 3 to move away from the diaphragm cavity 2, the grommet 6 moves with the diaphragm 3, that is, the diaphragm 3 moves away from the diaphragm cavity 2, when the grommet 6 is blocked by the blocking part 7, the grommet 6 is stationary, the driving mechanism 4 drives the connecting head 5 and the middle part of the diaphragm 3 to continue to move away from the diaphragm cavity 2, in the process of the diaphragm 3 continuing to move away from the diaphragm cavity 2, the grommet 6 abuts against the diaphragm 3 in the gap between the connecting head 5 and the main body 1, which can reduce the concentrated stress of the diaphragm 3 in the gap, thereby further improving the service life of the diaphragm.

[0036] The liquid extraction process of the anti-high pressure diaphragm infusion device: the driving mechanism 4 drives the connecting head 5 and the diaphragm 3 to move away from the diaphragm cavity 2, the driving mechanism 4 first drives the connecting head 5 and the middle part of the diaphragm 3 to move away from the diaphragm cavity 2, when the connecting head 5 and the grommet 6 abut, the grommet 6 is pushed by the connecting head 5 and pushes the diaphragm 3 in the gap between the connecting head 5 and the main body 1 to move away from the diaphragm cavity 2, in the process of the diaphragm 3 moving away from the diaphragm cavity 2, the grommet 6 can reduce the concentrated stress of the diaphragm 3 in the gap, thereby further improving the service life of the diaphragm. Overall, the diaphragm 3 is first pulled in the middle by the connecting head 5, and then resisted by the grommet 6 in the gap between the connecting head 5 and the main body 1, on the one hand, the deformation of the diaphragm 3 in the gap between the connecting head 5 and the main body 1 is small, and on the other hand, the overall deformation of the diaphragm 3 is more gentle, thereby improving the service life and anti-high pressure ability of the diaphragm 3.

[0037] The anti-high pressure diaphragm infusion device, the grommet 6 moves with the diaphragm 3, that is, the diaphragm 3 moves away from the diaphragm cavity 2, when the grommet 6 is blocked by the blocking part 7, the grommet 6 is stationary, the driving mechanism 4 drives the connecting head 5 and the middle part of the diaphragm 3 to continue to move away from the diaphragm cavity 2, in the process of the diaphragm 3 continuing to move away from the diaphragm cavity 2, the grommet 6 abuts against the diaphragm 3 in the gap between the connecting head 5 and the main body 1, which can reduce the concentrated stress of the diaphragm 3 in the gap, thereby further improving the service life of the diaphragm. Overall, the diaphragm 3 is first pushed in the middle by the connecting head 5, and then pushed by the grommet 6 in the gap between the connecting head 5 and the main body 1, on the one hand, the deformation of the diaphragm 3 in the gap between the connecting head 5 and the main body 1 is small, and on the other hand, the overall deformation of the diaphragm 3 is more gentle, thereby improving the service life and anti-high pressure ability of the diaphragm 3.

[0038] The anti-high-pressure diaphragm infusion device sets the movable grommet 6 at the connecting head 5 and the diaphragm 3, and the grommet 6 can tightly abut the diaphragm 3 in the gap between the connecting head 5 and the main body 1 during the movement of the middle part of the diaphragm 3 in two directions driven by the connecting head 5 relative to the diaphragm cavity 2, thereby reducing the concentrated stress of the diaphragm 3 at the gap between the connecting head 5 and the main body 1, making the overall deformation of the diaphragm 3 more gentle, and improving the service life and anti-high-pressure capacity of the diaphragm 3. Moreover, under the action of the grommet 6, the anti-high-pressure capacity of the diaphragm 3 is greatly improved, and the diaphragm 3 can withstand high pressure (such as 100 bar or more), so that the diaphragm 3 does not need to be provided with liquid force support by setting an oil supplementing mechanism, thereby reducing the overall volume, weight and occupied space.

[0039] Further, as shown in Figure 2 and Figure 3 in the embodiment, the top of the grommet 6 is provided with a pushed surface 61 pushed by the connecting head 5, and the bottom surface of the grommet 6 abuts against the diaphragm 3. During the pumping and conveying of liquid of the anti-high-pressure diaphragm infusion device, the bottom surface of the grommet 6 generally abuts against the diaphragm 3, and the pushed surface 61 is combined with the connecting head 5 first and then separated during the pumping process, and is separated first and then combined during the conveying process.

[0040] Further, in the embodiment, the grommet 6 is slidably arranged in the main body 1. Preferably, the connecting head 5 moves up and down under the driving action of the driving mechanism 4, the diaphragm 3 is located on the upper side of the diaphragm cavity 2, and the connecting head 5 is located above the diaphragm 3.

[0041] Further, in the embodiment, the main body 1 is provided with a guide cylindrical surface 11, and the outer peripheral surface of the grommet 6 is slidably matched with the guide cylindrical surface 11, thereby improving the stability of the movement of the grommet 6, and further improving the stability of the action of the grommet 6 on the diaphragm 3, and further improving the anti-high-pressure strength and service life of the diaphragm 3.

[0042] Further, in the embodiment, the blocking part 7 is a step surface arranged at the top of the guide cylindrical surface 11, which has a simple structure and is convenient to process. Preferably, the step surface is horizontally arranged, the top surface of the grommet 6 is provided with a blocked surface parallel to the step surface, and the blocked surface is matched with the step surface, thereby improving the stability of the grommet 6 in the blocked and stationary state, and further improving the stability of the abutting and limiting of the grommet 6 on the diaphragm 3.

[0043] Further, in the embodiment, the grommet 6 is provided with one. Further, in the embodiment, the blocking part 7 is correspondingly arranged above the grommet 6.

[0044] Further, in the embodiment, the diaphragm 3 is provided with multiple layers. Compared with the diaphragm 3 with the same total thickness of a single layer, the diaphragm 3 with multiple layers can greatly improve the fatigue resistance of the diaphragm 3 in reciprocating motion under the premise of ensuring the same tensile strength (the same material and the same total thickness), thereby increasing the service life of the diaphragm 3.

[0045] Preferably, the diaphragm 3 is fixed to the connecting head 5 by a locking member, and at least the lowermost diaphragm 3 is tightly attached to the bottom surface of the locking member to form a sealed separation between the connecting head 5 and the membrane cavity 2.

[0046] Further, in the embodiment, the middle part of the connecting head 5 is provided with a connecting part 51 connected with the diaphragm 3, and the connecting head 5 is provided with a diaphragm pushing part 52 around the connecting part 51, and the diaphragm pushing part 52 is provided with a middle-recessed annular arc surface 53 facing the diaphragm 3.

[0047] It can be understood that, during operation, the driving mechanism 4 drives the connecting head 5 to reciprocate, and drives the diaphragm 3 to reciprocate, so that the liquid is pumped into and discharged from the membrane cavity 2.

[0048] Further, in the embodiment, the driving mechanism 4 comprises a push-pull rod 41 and a driving assembly 42 for driving the push-pull rod 41 to reciprocate, and the driving assembly 42 is connected with the connecting head 5 through the push-pull rod 41.

[0049] It can be understood that, the anti-high-pressure diaphragm infusion device can resist high pressure above 100 bar without hydraulic oil protection, and the reason is that a gasket ring 6 capable of following the diaphragm 3 to move up and down is ingeniously designed. During the movement of the diaphragm 3, the gasket ring 6 can tightly adhere to the diaphragm 3, and when the diaphragm 3 is subjected to high pressure from the liquid side, the gasket ring 6 can dynamically adhere to the diaphragm 3 at all times to provide support to the diaphragm 3 at all times. At the same time, during the movement, the gap formed between the connecting head 5 and the gasket ring 6 and between the gasket ring 6 and the main body 1 is always in a very small range, so that when the diaphragm 3 is subjected to high pressure, the force borne by the diaphragm 3 can be transferred to the gasket ring 6, the main body 1 and the connecting head 5, thereby protecting the diaphragm 3 from being damaged, greatly improving the pressure resistance of the diaphragm 3, and enabling the diaphragm 3 to have an ultra-long service life when operating in a high-pressure environment.

[0050] Embodiment two:

[0051] Figures 4 to 6 Another embodiment of the anti-high-pressure diaphragm infusion device is shown, and the structure of the anti-high-pressure diaphragm infusion device of the embodiment is basically the same as that of the first embodiment, and the only difference is that the gasket ring 6 and the blocking part 7 are provided with a plurality of (at least two) blocking parts 7, each blocking part 7 is arranged above each gasket ring 6 one by one, and each gasket ring 6 is vertically overlapped. In this way, the diaphragm 3 at the gap between the connecting head 5 and the main body 1 is subjected to the abutting action of the plurality of gasket rings 6, and is dispersedly pushed by the gasket rings 6, thereby better preventing concentrated stress and further improving the anti-high-pressure capability and service life of the diaphragm 3.

[0052] Further, the outer diameter of the guide cylinder surface 11 gradually increases from top to bottom, that is, the outer diameter of the upper guide cylinder surface 11 is smaller than that of the lower guide cylinder surface 11, and the top of each guide cylinder surface 11 is provided with a step surface, the largest gasket ring 6 is in sliding fit with the largest guide cylinder surface 11, and the smallest gasket ring 6 is separated from the connector 5 or in abutting fit.

[0053] Further, the guide cylinder surface 11 in the main body 1 can also be provided with multiple guide cylinder surfaces 11, and one gasket ring 6 corresponds to one guide cylinder surface 11. Preferably, the gasket ring 6 between the largest gasket ring 6 and the smallest gasket ring 6 is in fit with the corresponding guide cylinder surface 11, which can be in sliding fit, or in separate or sliding contact fit.

[0054] In the embodiment, the gasket ring 6 and the blocking part 7 are provided with two as an example.

[0055] Although the utility model has disclosed as above with preferred embodiments, however, it is not used to limit the utility model. Any skilled person in the art, without departing from the technical scheme range of the utility model, can utilize the above disclosed technical content to make many possible changes and modifications to the utility model technical scheme, or modify as equivalent variation equivalent embodiments. Therefore, any simple modification, equivalent variation and modification made to the above embodiments according to the technical essence of the utility model technical scheme, which does not depart from the technical scheme of the utility model, should fall within the protection scope of the utility model technical scheme.

Claims

1. A high-pressure resistant diaphragm infusion device, comprising a main body (1), a membrane cavity (2), a diaphragm (3) and a driving mechanism (4), the membrane cavity (2) is arranged in the main body (1) for pumping liquid, the diaphragm (3) is arranged on one side of the membrane cavity (2), the driving mechanism (4) is connected with the diaphragm (3) through a connecting head (5) and used for driving the diaphragm (3) to change the volume of the membrane cavity (2), characterized in that: The connecting head (5) and the diaphragm (3) are provided with a gasket ring (6) which moves with the diaphragm (3), and the main body (1) is provided with a blocking part (7) for limiting the movement range of the gasket ring (6). ​ 2. The anti-hyperbaric membrane infusion device of claim 1, wherein: The top of the gasket ring (6) is provided with a push surface (61) which is pushed downward by the connecting head (5), and the bottom surface of the gasket ring (6) abuts against the diaphragm (3).

3. The anti-hyperbaric membrane infusion device of claim 1, wherein: The gasket ring (6) is lifted and lowered in the main body (1).

4. The anti-hyper-tube membrane infusion device of claim 3, wherein: The main body (1) is provided with a guide cylindrical surface (11), and the outer peripheral surface of the gasket ring (6) is in sliding fit with the guide cylindrical surface (11).

5. The anti-hyper-tube membrane infusion device of claim 4, wherein: The blocking part (7) is a stepped surface provided on the top of the guide cylindrical surface (11).

6. The anti-hyperbaric membrane infusion device of claim 1, wherein: The gasket ring (6) is provided with one, and the blocking part (7) is correspondingly arranged above the gasket ring (6).

7. The anti-hyper-tube membrane infusion device of claim 1, wherein: The gasket ring (6) and the blocking part (7) are each provided with a plurality of gasket rings (6), and each blocking part (7) is correspondingly arranged above each gasket ring (6), and each gasket ring (6) is stacked above and below.

8. The anti-hyper-tube membrane infusion device according to any one of claims 1 to 7, wherein: The diaphragm (3) is provided with a plurality of layers.

9. The anti-hyper-tube membrane infusion device according to any one of claims 1 to 7, wherein: The middle part of the connecting head (5) is provided with a connecting part (51) connected with the diaphragm (3), the outer periphery of the connecting part (51) is provided with a diaphragm pushing part (52), and the side of the diaphragm pushing part (52) facing the diaphragm (3) is a middle recessed annular arc surface (53).

10. The anti-hyper-tube membrane infusion device according to any one of claims 1 to 7, wherein: The driving mechanism (4) comprises a push-pull rod (41) and a driving assembly (42) for driving the push-pull rod (41) to reciprocate, and the driving assembly (42) is connected with the connecting head (5) through the push-pull rod (41).

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