A micro pump, its closed fluid channel module and manufacturing method

Abstract

The present invention relates to a micro pump, its enclosed fluid channel module and manufacturing method, which includes a module body (20), a fluid inlet (15) and a fluid outlet (16) provided on one side plane of the module body (20). It is characterized in that it further includes an inlet channel opening (111, 112), an outlet channel opening (113) provided on the other side plane of the module body (20), and an inlet channel cavity (21) integrally formed inside the module body (20) for connecting the fluid inlet (15) and the inlet channel cavity opening (111, 112), and an outlet channel cavity (22) for connecting the fluid outlet (16) and the outlet channel cavity opening (113). This achieves more convenient installation of the micro pump and simplifies the manufacturing process.

Description

Technical Field

[0001] The present invention relates to a micro - pump device, specifically to a micro - diaphragm pump with a closed fluid channel, and particularly to a micro - pump, its closed fluid channel module, and a manufacturing method therefor. Background Art

[0002] The miniaturization of the volume and the delicate structure of the micro - pump require ultra - precise micro - manufacturing of mechanical kinetic energy structures in the processing technology. The arrangement in the structural design has a relatively large impact on the simplicity of product installation and the functional effect. Moreover, the arrangement design of the outlet and inlet channel structures also affects the overall volume and aesthetic effect of the micro - pump.

[0003] For example, in the Chinese invention disclosure "CN113530799A Series - connected diaphragm pump", the cuboid structure with two diaphragm sacs arranged side - by - side linearly. If a parallel - type structure where the two diaphragm sacs suck in and out simultaneously is required to achieve a larger flow rate pumping function, it is relatively difficult in the structural design. Because the structure of the two side - by - side diaphragm sacs in the cuboid is different from that in the Chinese invention "CN103591003B A vacuum pump", where multiple diaphragm sacs form a circular array arrangement and can be designed with an inner circle as the fluid outflow cavity and an outer circle as the fluid inlet cavity, simply realizing the parallel - type structure where each diaphragm sac sucks in and out simultaneously. How to achieve the parallel - type design where the two side - by - side diaphragm sacs in the cuboid - shaped diaphragm micro - pump suck in and out simultaneously, and realize the simple large - flow - rate structural function of the flat cuboid micro - diaphragm pump is one of the problems solved by the present invention.

[0004] In view of the above - mentioned drawbacks and problems, the present invention adopts the following technical solutions for improvement. Summary of the Invention

[0005] The object of the present invention is to provide a micro - pump, its closed fluid channel module, and a manufacturing method therefor. The disclosed technical solutions are as follows:

[0006] A closed fluid channel module of a micro - pump, the closed fluid channel module is integrally formed on the main body part of the outlet cover plate (11) of the micro - pump, including a module main body (20), a fluid inlet (15), and a fluid outlet (16) provided on one side plane of the module main body (20). It is characterized in that it further includes an inlet channel opening (111, 112), an outlet channel opening (113) provided on the other side plane of the module main body (20), and an inlet channel cavity (21) integrally formed inside the module main body (20) for connecting the fluid inlet (15) and the inlet channel cavity opening (111, 112), and an outlet channel cavity (22) for connecting the fluid outlet (16) and the outlet channel cavity opening (113).

[0007] Among them, the import channel cavity (21) includes a laterally integrated channel cavity (211) and a number of vertical channel cavities (212, 213) that connect the laterally integrated channel cavity (211) and a number of import channel openings (111, 112).

[0008] Furthermore, the number of vertical channel cavities (212, 213) is set to two, which are symmetrically connected and arranged at both end positions in the axial direction of the laterally integrated channel cavity (211).

[0009] Furthermore, one end of the laterally integrated channel cavity (211) is sealed by a plug (114). In the manufacturing process, the processing of a completely enclosed cavity is relatively difficult. After using a process where one end can be core-pulled and then plugged after overall mold forming, it is more conducive to the processing and manufacturing of the enclosed fluid channel. The plug (114) can be made of steel balls or the like.

[0010] Furthermore, the laterally integrated channel cavity (211) is arranged at the central lateral position of the channel module. Grooves (23) are provided around the position without the laterally integrated channel cavity (211). Half of the laterally integrated channel cavity (211) forms a protrusion that is separately formed on the upper surface. The design of the grooves (23) is not only more aesthetically pleasing but also saves materials.

[0011] The present invention also discloses a micro pump, which includes an outlet cover plate (11), a valve device (12), a diaphragm device (13), and a driving device (14). The outlet cover plate (11) is provided with a fluid inlet (15) and a fluid outlet (16). It is characterized in that it further includes a module main body (20) integrally formed on the main body part of the outlet cover plate (11). Import channel openings (111, 112), an outlet channel opening (113) are arranged on the other plane of the module main body (20), and an import channel cavity (21) integrally formed inside the module main body (20) for connecting the fluid inlet (15) and the import channel cavity opening (111), and an outlet channel cavity (22) for connecting the fluid outlet (16) and the outlet channel cavity opening (113).

[0012] Among them, the import channel cavity (21) includes a laterally integrated channel cavity (211) and a number of vertical channel cavities (212, 213) that connect the laterally integrated channel cavity (211) and a number of import channel openings (111, 112).

[0013] Furthermore, the vertical channel cavities (212, 213) are symmetrically connected and arranged at both end positions in the axial direction of the laterally integrated channel cavity (211).

[0014] Furthermore, the diaphragm device (13) includes a diaphragm (131) having a number of diaphragm sacs (1311) arranged side by side, and a corresponding diaphragm seat (132), and the valve device (12) includes a valve disc (121) arranged corresponding to the diaphragm (131) of a number of diaphragm sacs and a valve seat (122) of a corresponding structure. Among them, there are two diaphragm sacs (1311) designed to be arranged side by side, and the corresponding valve disc device is also symmetrically arranged into an inlet and outlet structure.

[0015] Furthermore, the valve disc (121) is arranged as a single-piece structure, and valve diaphragms are symmetrically distributed. The inlet channel openings (111, 112) form one-way opening and closing corresponding to the center position of the valve diaphragm, and the outlet channel opening (113) corresponds to the gap between the valve diaphragms. Compared with the commonly used umbrella-shaped one-way valve disc at present, the valve disc of the single-piece structure is more conducive to assembly and installation during the manufacturing process.

[0016] Furthermore, the transverse channel cavity (211) is arranged at the central transverse position of the channel module, and grooves (23) are arranged around the position without the transverse channel cavity (211). Half of the transverse channel cavity (211) is formed to protrude from the upper surface and is separately formed.

[0017] The present invention also discloses a manufacturing method for a micro-pump closed fluid channel module, which is used for the manufacturing process of an integrated closed fluid channel module of a micro-pump. The characteristics lie in using the method of core pulling and one-side plugging to form the manufacturing process of the internal transverse channel cavity. The specific steps are as follows:

[0018] a. Mold making: Place the forming core of the internal transverse channel cavity of the micro-pump upper cover at the corresponding position in the corresponding mold of the micro-pump upper cover. One end of the forming core is exposed on one side of the upper cover body, and injection molding is carried out to form the micro-pump upper cover.

[0019] b. Demolding: Detach the injection-molded micro-pump upper cover from the mold to form a finished product of the micro-pump upper cover body.

[0020] c. Core pulling: Pull out the forming core of the internal transverse channel cavity of the micro-pump upper cover in the finished product of the micro-pump upper cover body, and the internal transverse channel cavity is formed in the micro-pump upper cover.

[0021] d. Plugging: Use a plug to plug the side of the micro-pump upper cover from which the forming core is pulled out to form an integrally sealed internal transverse channel cavity for fluid flow.

[0022] Among them, the manufacturing process also includes the manufacturing method of the vertical channel cavities (212, 213). Generally, because the channels of the vertical channel cavities (212, 213) are short, the method of forming together in the mold is selected.

[0023] According to the above technical scheme, the present invention has the following beneficial effects:

[0024] 1. The present invention provides a micro pump and a closed fluid channel module and a manufacturing method thereof. By integrally forming a closed fluid channel module structure, the manufacturing process of the fluid channel of the micro pump is simplified, so that the installation and assembly are more convenient.

[0025] 2. The closed fluid channel module structure of the micro pump of the present invention forms a transverse channel and connects the side-by-side diaphragm bags to realize a parallel structure with the same inlet and outlet, making the one-way valve device and the fluid channel cavity structure more concise. The integrated structure of the one-way valve device, compared with the small-volume multiple umbrella-shaped valve structure in the prior art, also reduces the difficulty of production and assembly, simplifies the production process, and improves production work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the overall structure of a pump according to a preferred embodiment of the present invention;

[0027] Figure 2 It is a schematic diagram of the explosion and decomposition of the pump structure of the best embodiment of the present invention;

[0028] Figure 3 It is a schematic diagram of the explosion and decomposition of the pump structure of the best embodiment of the present invention;

[0029] Figure 4 AA is a cross-sectional schematic diagram of the internal structure of the pump of the best embodiment of the present invention;

[0030] Figure 5 BB is a cross-sectional schematic diagram of the internal structure of the pump of the best embodiment of the present invention;

[0031] Figure 6 A three-dimensional schematic diagram of the fluid channel opening of the micro pump upper cover according to the best embodiment of the present invention;

[0032] Figure 7 A three-dimensional schematic diagram of the fluid channel opening of the micro pump upper cover according to the best embodiment of the present invention;

[0033] Figure 8 A bottom view of the fluid channel opening of the micro pump upper cover according to the best embodiment of the present invention;

[0034] Figure 9 It is a partial enlarged schematic diagram of the cross-sectional view of the internal structure of the pump according to the best embodiment of the present invention;

[0035] Figure 10 A schematic cross-sectional view of the internal structure CC of the integrated fluid channel of the pump according to the best embodiment of the present invention;

[0036] Figure 11Schematic diagram of the D-D cross-section of the internal structure of the integrated fluid channel of the pump according to the best embodiment of the present invention;

[0037] Figure 12 Schematic diagram of the partial B-B enlarged view of the cross-section of the internal structure of the pump according to the best embodiment of the present invention;

[0038] Figure 13 Schematic diagram of the manufacturing process flow of the integrated fluid channel of the pump according to the best embodiment of the present invention.

[0039] In the figure, pump 10, outlet cover plate 11, valve device 12, diaphragm device 13, drive device 14, fluid inlet 15, fluid outlet 16;

[0040] Inlet channel openings 111, 112, outlet channel opening 113, plug 114;

[0041] Valve plate 121;

[0042] Diaphragm 131, diaphragm seat 132, diaphragm bladder 1311;

[0043] Module main body 20, inlet channel cavity 21, transverse channel cavity 211, vertical channel cavities 212, 213, outlet channel cavity 22, groove 23. Detailed implementation manner

[0044] The following further describes the present invention in conjunction with the accompanying drawings and specific implementation manners. As Figures 1 to 12 shown, a closed fluid channel module of a micro pump is integrally formed on the main body part of the outlet cover plate 11 of the micro pump, including a module main body 20, a fluid inlet 15 and a fluid outlet 16 provided on one side plane of the module main body 20, and also including inlet channel openings 111, 112, an outlet channel opening 113 provided on the other side plane of the module main body 20, and an inlet channel cavity 21 integrally formed inside the module main body 20 for connecting the fluid inlet 15 and the inlet channel openings 111, 112, and an outlet channel cavity 22 for connecting the fluid outlet 16 and the outlet channel opening 113,

[0045] As Figure 9 、 Figure 11 and Figure 12 shown, the inlet channel cavity 21 includes an integrally formed transverse channel cavity 211 and a plurality of vertical channel cavities 212, 213 connecting the transverse channel cavity 211 and a plurality of inlet channel openings 111, 112.

[0046] As Figure 9 、 Figure 11 and Figure 12 shown, the vertical channel cavities 212, 213 are provided in two, and are symmetrically connected to two end portions in the axial direction of the transverse channel cavity 211 respectively.

[0047] As shown in Figure 7 , Figure 9 , Figure 11 and Figure 12 shown in, one end of the transverse channel cavity 211 is sealed by a plug 114. In the manufacturing process, the processing of a completely enclosed cavity is relatively difficult. After using a core-pulling method at one end and overall mold forming, the core-pulling and plugging manufacturing process is more conducive to the processing and manufacturing of a closed fluid channel. The plug 114 can be made of steel balls or the like.

[0048] As shown in Figure 6 shown in, the transverse channel cavity 211 is arranged at the central transverse position of the channel module. Grooves 23 are arranged around the position without the transverse channel cavity 211. Half of the transverse channel cavity 211 protrudes from the upper surface and is formed separately. The design of the grooves 23 is not only more beautiful in appearance but also saves materials.

[0049] As shown in Figures 1 to 6 shown in, a micro pump includes an outlet cover plate 11, a valve device 12, a diaphragm device 13, and a driving device 14. The outlet cover plate 11 is provided with a fluid inlet 15 and a fluid outlet 16. It also includes a module main body 20 integrally formed on the main body part of the outlet cover plate 11. On the other side plane of the module main body 20, an inlet channel opening 111, 112, an outlet channel opening 113 are provided, and an inlet channel cavity 21 for communicating the fluid inlet 15 and the inlet channel cavity opening 111, and an outlet channel cavity 22 for communicating the fluid outlet 16 and the outlet channel cavity opening 113 are integrally formed inside the module main body 20.

[0050] As shown in Figure 9 , Figure 11 and Figure 12 shown in, the inlet channel cavity 21 includes an integrally formed transverse channel cavity 211 and a plurality of vertical channel cavities 212, 213 for communicating the transverse channel cavity 211 and a plurality of inlet channel openings 111, 112.

[0051] As shown in Figure 9 , Figure 11 and Figure 12 shown in, the vertical channel cavities 212, 213 are symmetrically and communicatively arranged at both end positions in the axial direction of the transverse channel cavity 211.

[0052] As shown in Figure 2 and Figure 3 shown in, the diaphragm device 13 includes a diaphragm 131 having a plurality of diaphragm sacs 1311 arranged side by side, and a corresponding diaphragm seat 132. The valve device 12 includes a valve plate 121 corresponding to the diaphragm 131 of a plurality of diaphragm sacs and a valve seat 122 with a corresponding structure. Among them, there are two diaphragm sacs 1311 arranged side by side, and the corresponding valve plate device is also symmetrically arranged into an inlet and outlet structure.

[0053] The valve disc 121 is arranged as a whole structure, and the valve diaphragm is symmetrically distributed. The inlet channel openings 111 and 112 form one-way opening and closing corresponding to the center position of the valve diaphragm, and the outlet channel opening 113 corresponds to the gap between the valve diaphragms. Compared with the commonly used umbrella-shaped one-way valve disc at present, the valve disc with a whole structure is more conducive to assembly and installation during the manufacturing process.

[0054] As Figure 6 shown in [reference], the transverse channel cavity 211 is arranged at the central transverse position of the channel module. Grooves 23 are arranged around the position without the transverse channel cavity 211. Half of the transverse channel cavity 211 is formed to protrude from the upper surface and is separately formed.

[0055] As Figure 13 shown in [reference], a manufacturing method of a micro-pump closed fluid channel module, a manufacturing process for an integrated closed fluid channel module of a micro-pump, uses a core-pulling and one-side plugging method to form the manufacturing process of the internal transverse channel cavity. The specific steps are as follows: a. Mold making: Place the forming core of the internal transverse channel cavity of the micro-pump upper cover at the corresponding position in the corresponding mold of the micro-pump upper cover. One end of the forming core protrudes from one side of the upper cover body, and injection molding is performed to form the upper cover of the micro-pump;

[0056] b. Demolding: Detach the injection-molded micro-pump upper cover from the mold to form a finished product of the micro-pump upper cover body;

[0057] c. Core-pulling: Pull out the forming core of the internal transverse channel cavity of the micro-pump upper cover from the finished product of the micro-pump upper cover body, and the internal transverse channel cavity is formed in the micro-pump upper cover

[0058] d. Plugging: Use a plug to plug the side of the micro-pump upper cover from which the forming core is pulled out to form an integrally sealed internal transverse channel cavity for fluid flow.

[0059] Among them, the manufacturing process also includes the manufacturing method of the vertical channel cavities 212 and 213. Generally, because the channels of the vertical channel cavities 212 and 213 are short, the method of forming together in the mold is selected.

[0060] The above is one of the implementation manners of the present invention. In addition, it should be noted that all equivalent or simple changes made according to the structure, features, and principles described in the concept of this patent are included in the protection scope of this patent.

Claims

1. A closed fluid channel module of a micro pump, comprising a module body (20), and a fluid inlet (15) and a fluid outlet (16) arranged on one side plane of the module body (20), characterized in that, It further includes an inlet channel opening (111, 112) and an outlet channel opening (113) provided on the other planar side of the module body (20), and an inlet channel cavity (21) integrally formed inside the module body (20) for communicating the fluid inlet (15) and the inlet channel opening (111, 112), and an outlet channel cavity (22) for communicating the fluid outlet (16) and the outlet channel opening (113). Among them, the inlet channel cavity (21) includes an integrally formed transverse channel cavity (211) and a plurality of vertical channel cavities (212, 213) for communicating the transverse channel cavity (211) and a plurality of inlet channel openings (111, 112); one end of the transverse channel cavity (211) is sealed by a plug (114); the transverse channel cavity (211) is disposed at the central transverse position of the channel module, and a groove (23) is provided around the position without the transverse channel cavity (211), and half of the transverse channel cavity (211) is formed to protrude and be separately formed on the upper surface.

2. The enclosed fluid passage module of a micro pump according to claim 1, wherein The vertical channel cavities (212, 213) are provided in two numbers and are symmetrically communicated and disposed at both end portions in the axial direction of the transverse channel cavity (211).

3. A micro pump, comprising an outlet cover plate (11), a valve device (12), a diaphragm device (13) and a driving device (14), wherein the outlet cover plate (11) is provided with a fluid inlet (15) and a fluid outlet (16), characterized in that, It further includes a module body (20) integrally formed on the main body part of the outlet cover plate (11). The module body (20) is provided with an inlet channel opening (111, 112), an outlet channel opening (113), and an inlet channel cavity (21) integrally formed inside the module body (20) for communicating the fluid inlet (15) and the inlet channel opening (111, 112), and an outlet channel cavity (22) for communicating the fluid outlet (16) and the outlet channel opening (113). Among them, the inlet channel cavity (21) includes an integrally formed transverse channel cavity (211) and a plurality of vertical channel cavities (212, 213) for communicating the transverse channel cavity (211) and a plurality of inlet channel openings (111, 112); one end of the transverse channel cavity (211) is sealed by a plug (114); the transverse channel cavity (211) is disposed at the central transverse position of the channel module, and a groove (23) is provided around the position without the transverse channel cavity (211), and half of the transverse channel cavity (211) is formed to protrude and be separately formed on the upper surface.

4. A micro pump according to claim 3, characterized in that, The vertical channel cavities (212, 213) are symmetrically communicated and disposed at both end portions in the axial direction of the transverse channel cavity (211).

5. A micro pump according to claim 3, characterized in that, The diaphragm device (13) includes a diaphragm (131) having a plurality of diaphragm sacs (1311) arranged side by side, and a corresponding diaphragm seat (132). The valve device (12) includes a valve plate (121) provided corresponding to the diaphragm (131) of a plurality of diaphragm sacs and a valve seat (122) with a corresponding structure.

6. A micro pump according to claim 5, characterized in that, The described valve plate (121) is arranged as a whole structure, and the valve membrane plates are symmetrically distributed. The inlet channel openings (111, 112) form one-way opening and closing corresponding to the center positions of the valve membrane plates, and the outlet channel opening (113) corresponds to the gap between the valve membrane plates.

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