Modularized quick-release precision metering pump

Abstract

The utility model discloses a modularized quick-release type precision metering pump which comprises a shell, an end cover is arranged at one end of the shell, a pump head is arranged at the other end of the shell, a one-way valve quick connector is arranged on the pump head, a plunger moving in the axial direction of the shell is arranged in the shell, a piston piece is arranged on the plunger, and the piston piece is connected with the pump head. A sealing ring is arranged on the periphery of the piston piece, and a driving device module for driving the plunger to move is detachably connected to the end cover. The plunger pump has the advantages that the plunger pump is simple and reasonable in structure, modular design is adopted, the end cover and the pump head are arranged at the two ends of the shell respectively to form the pump body module, the detachable driving device module is arranged on the end cover, and the plunger is driven by the driving device module to move to achieve conveying of materials. In addition, standard parts are adopted as driving device modules, purchasing is convenient, and the manufacturing cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metering pump manufacturing, and particularly relates to a modular quick-disassembly precision metering pump. Background Art

[0002] In the production processes of many industries such as the pharmaceutical industry, food industry, and pharmaceutical manufacturing industry, there is a filling process. During the filling process, a metering pump is generally used for liquid transportation.

[0002]

[0003] When transporting materials with relatively high viscosity, the materials often adhere to the inside of the metering pump, resulting in the inability of the metering pump to operate normally. Therefore, it is necessary to regularly maintain the metering pump. Since the materials on the surface of the components are difficult to be completely cleaned, the method of directly replacing the components is mostly used for repair. However, there are many non-standard parts in the existing metering pumps, which not only increases the manufacturing cost of the existing metering pumps, but also requires additional configuration of corresponding components for replacement, increasing the use and maintenance costs. Therefore, the existing metering pump structure needs to be further improved. Summary of the Utility Model

[0004] The purpose of the utility model is to make up for the above deficiencies and disclose to the society a modular quick-disassembly precision metering pump with a simple and reasonable structure, convenient disassembly and assembly, and low manufacturing cost.

[0003]

[0005] The technical solution of the utility model is realized as follows:

[0006] A modular quick-disassembly precision metering pump includes a housing. One end of the housing is provided with an end cover, and the other end of the housing is provided with a pump head. A one-way valve quick connector is arranged on the pump head. A plunger that moves axially along the housing is arranged inside the housing. A piston piece is arranged on the plunger. A sealing ring is arranged on the outer periphery of the piston piece. A driving device module for driving the plunger to move is detachably connected to the end cover.

[0007] The measures for further optimizing the technical solution are as follows:

[0004]

[0008] As an improvement, the driving device module is a screw rod stepping motor, and the screw rod of the screw rod stepping motor is connected to the plunger.

[0009] As an improvement, the driving device module is a cylinder, and the piston rod of the cylinder is connected to the plunger.

[0005]

[0010] As an improvement, a quick-connect air source joint is arranged on the cylinder. The setting of the quick-connect air source joint facilitates the connection of the ventilation pipe.

[0011] As an improvement, the end face of the piston piece is of an arc surface structure. The arc surface design can increase the contact area.

[0006]

[0012] As an improvement, an assembly groove is provided on the outer periphery of the piston piece, and the sealing ring is embedded in the assembly groove. The provision of the assembly groove facilitates the assembly of the sealing ring and can also prevent the displacement of the sealing ring.

[0013] As an improvement, a bushing is provided inside the housing. The provision of the bushing can increase the surface smoothness and wear resistance.

[0014] As an improvement, an O-ring is provided between the pump head and the bushing.

[0015] As an improvement, the pump head and the end cover are fixed by a screw.

[0016] The advantages of the present utility model compared with the prior art are:

[0017] The modular quick-disassembly precision metering pump of the present utility model has a simple and reasonable structure, is convenient for disassembly and assembly, adopts a modular design, with an end cover and a pump head respectively provided at both ends of the housing to form a pump body module, and a detachable drive device module is provided on the end cover, and the plunger is driven by the drive device module to realize the conveying of materials. In addition, standard parts are used as the drive device module, which is convenient for procurement and can reduce the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the three-dimensional structure diagram of Embodiment 1 of the present utility model;

[0019] Figure 2 is the cross-sectional structure diagram of Embodiment 1 of the present utility model;

[0020] Figure 3 is Figure 2 the enlarged view of part A in;

[0021] Figure 4 is Figure 2 the enlarged view of part B in;

[0022] Figure 5 is the three-dimensional structure diagram of Embodiment 2 of the present utility model;

[0023] Figure 6 is the cross-sectional structure diagram of Embodiment 2 of the present utility model.

[0024] The names of the reference numerals in the drawings of the present utility model are:

[0025] housing 1, end cover 11, pump head 2, O-ring 2a, one-way valve quick connector 3, plunger 4, piston piece 41, sealing ring 41a, assembly groove 41b, lead screw stepping motor 51, cylinder 52, quick-connect air source joint 52a, bushing 6, screw 7. DETAILED DESCRIPTION OF THE INVENTION

[0026] The present utility model will be further described in detail below in conjunction with the accompanying drawings:

[0027] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious deformations. The basic principles defined in the following description of the present utility model can be used in other implementation schemes, deformation schemes, improvement schemes, equivalent schemes, and other technical schemes that do not deviate from the spirit and scope of the present utility model.

[0028] Those skilled in the art should understand that in the disclosure of the present utility model, the orientations or positions indicated by the terms "longitudinal", "lateral", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or position relationships shown in the drawings. It is only for the convenience of describing the present utility model and is a simplified description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present utility model.

[0029] It can be understood that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "one" should not be construed as a limitation on the number.

[0030] Embodiment 1, as Figures 1 to 4 shown, a modular quick-release precision metering pump includes a housing 1. One end of the housing 1 is provided with an end cover 11, and the other end of the housing 1 is provided with a pump head 2. A one-way valve quick connector 3 is provided on the pump head 2. A plunger 4 that moves axially along the housing 1 is provided inside the housing 1. A piston piece 41 is provided on the plunger 4, and a sealing ring 41a is provided on the outer periphery of the piston piece 41. A driving device module for driving the movement of the plunger 4 is detachably connected to the end cover 11.

[0031] The one-way valve quick connector 3 is a standard part that can be directly purchased on the market, and it is convenient to purchase. Here, the one-way valve quick connector 3 is used as the connection joint at the inlet and outlet of the pump, with a simple structure and convenient connection.

[0032] The precision metering pump of the present utility model adopts a modular design. End covers 11 and a pump head 2 are respectively fixed at both ends of the housing 1 to form a pump body module. The pump body module is detachably matched with the driving device module, which is convenient for disassembly and assembly. A one-way valve quick connector 3 is provided on the pump head 2, which is convenient for connecting the material pipe.

[0033] The described drive device module is a lead screw stepper motor 51, and the lead screw of the lead screw stepper motor 51 is connected to the plunger 4. The lead screw stepper motor 51 is also a standard component that can be directly purchased on the market.

[0034] The end face of the piston piece 41 has an arc surface structure. By adopting the arc surface setting, the area of the material pushing surface of the piston piece 41 can be increased.

[0035] An assembly groove 41b is provided on the outer periphery of the piston piece 41, and the sealing ring 41a is embedded in the assembly groove 41b.

[0036] A bushing 6 is provided inside the housing 1. The setting of the bushing 6 can increase the smoothness and wear resistance of the inner surface of the housing 1; the sealing ring 41a on the piston piece 41 is in contact with the inner surface of the bushing 6 for sealing.

[0037] An O-ring 2a is provided between the pump head 2 and the bushing 6. The setting of the O-ring 2a can increase the sealing performance between the pump head 2 and the bushing 6.

[0038] The pump head 2 and the end cover 11 are fixed by a screw rod 7. By using the screw rod 7 to fix between the pump head 2 and the end cover 11, the pump body module is made more integral.

[0039] Example 1, as Figures 5 to 6 shown, the precision metering pump in this embodiment is similar to that in Example 1. The difference is that the drive device module is a cylinder 52, and the piston rod of the cylinder 52 is connected to the plunger 4.

[0040] A quick-connect air source joint 52a is provided on the cylinder 52. The setting of the quick-connect air source joint 52a facilitates the connection of the ventilation pipe.

[0041] The cylinder 52 is a standard cylinder that can be directly purchased on the market.

[0042] Working principle:

[0043] The precision metering pump of the present utility model adopts a modular design. The drive device module and the pump body module are detachably matched, and the user can select a lead screw stepper motor 51 (electric) or a cylinder 52 (pneumatic) according to the use environment. When the metering pump is working, the drive device module (lead screw stepper motor 51 or cylinder 52) drives the plunger 4 in the housing 1 together with the piston piece 41 to make a reciprocating motion. When the plunger 4 moves away from the one-way valve quick joint 3, the material is drawn into the housing 1 from the feed port. When the plunger 4 moves towards the one-way valve quick joint 3, the material in the housing 1 is discharged from the discharge port, thereby realizing the transportation of the material.

[0044] The above are only the preferred embodiments of the present utility model, and do not limit the implementation manners and protection scope of the present utility model. For those skilled in the art, it should be realized that all the solutions obtained by equivalent substitution and obvious changes made by using the specification and illustrated content of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A modular quick-release precision metering pump, comprising a pump housing (1), characterized in that: One end of the described pump housing (1) is provided with an end cover (11), the other end of the pump housing (1) is provided with a pump head (2), a one-way valve quick connector (3) is arranged on the pump head (2), a plunger (4) that moves axially along the pump housing (1) is arranged inside the pump housing (1), a piston piece (41) is arranged on the plunger (4), a sealing ring (41a) is arranged on the outer periphery of the piston piece (41), a driving device module for driving the movement of the plunger (4) is detachably connected to the end cover (11), the driving device module is a lead screw stepping motor (51), the lead screw of the lead screw stepping motor (51) is connected to the plunger (4), or the driving device module is a cylinder (52), and the piston rod of the cylinder (52) is connected to the plunger (4).

2. The modular quick-release precision metering pump according to claim 1, characterized in that: A quick-connect air source joint (52a) is arranged on the described cylinder (52).

3. A modular quick-release precision metering pump according to claim 1, characterized in that: The end face of the described piston piece (41) is of an arc surface structure.

4. The modular quick-release precision metering pump according to claim 3, characterized in that: An assembly groove (41b) is arranged on the outer periphery of the described piston piece (41), and the sealing ring (41a) is embedded in the assembly groove (41b).

5. The modular quick-release precision metering pump according to claim 4, characterized in that: A bushing (6) is arranged inside the described pump housing (1).

6. The modular quick-release precision metering pump according to claim 5, characterized in that: An O-ring (2a) is arranged between the described pump head (2) and the bushing (6).

7. A modular quick-release precision metering pump according to claim 6, characterized in that: The pump head (2) and the end cover (11) are fixed by a screw (7).

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