Cleaning mechanism and plunger pump with same

Abstract

The utility model discloses a cleaning mechanism and a plunger pump with the same, the cleaning mechanism comprises a first composition part and a second composition part, and the first composition part and the second composition part are integrally manufactured or installed in a combined mode; the first component part comprises a hole part and a groove part, and the groove part is communicated with the communication hole of the second component part. According to the cleaning mechanism, fluid can be introduced through an external circulating pump to clean the sealing ring located in the groove in the cavity and the cavity, so that impurities and the like in the working process of the plunger are effectively taken away through fluid flowing, effective cleaning is achieved, and risks such as damage to the sealing ring and potential safety hazards are avoided; the service life of the plunger pump is prolonged, and damage to the plunger pump or equipment caused by leakage is reduced; moreover, the cleaning mechanism can be directly installed in an existing plunger pump, special design change of the plunger pump is not needed, increase of manufacturing and using cost is avoided, and the cleaning mechanism can be better matched with other products.

Description

Technical Field

[0001] This utility model relates to a plunger pump for a pipetting device, and particularly to a cleaning mechanism and a plunger pump having the mechanism. Background Technology

[0002] A plunger pump is a high-precision, high-reliability liquid transfer device used in pipetting technology, widely applied in fields such as biomedicine, chemical analysis, and molecular biology. Its core components include a precision-machined plunger (piston), pump body, drive mechanism, and sealing system. Driven by a motor or mechanical device, the plunger reciprocates within the pump chamber: when the plunger retracts, a negative pressure is created, drawing liquid into the chamber; when the plunger advances, a positive pressure is generated, achieving precise liquid discharge.

[0003] In existing technologies, plunger pumps use a motor and lead screw mechanism to directly drive the piston, enabling it to perform high-precision linear reciprocating motion within a sealed cavity. A dynamically sealed structure is formed between the cavity and the piston through a precisely matched sealing ring, ensuring no liquid leakage during operation. However, when the pumped liquid contains particulate impurities (such as unfiltered suspended solids) or hard crystals formed after the drying of volatile solvents (such as salt deposits or organic solute sediments), these impurities will cut into the sealing interface as the piston moves, causing scratches or even tears to the sealing ring. The resulting leakage will first corrode internal metal components of the pump (such as stainless steel plungers and aluminum cavities) and transmission components, reducing mechanical lifespan. If the leaking liquid is conductive (such as acid / alkali solutions or ion buffer solutions), it may enter the motor unit's trigger circuit along the lead screw, causing a short circuit. In extreme cases, this could lead to electrical sparks or equipment fires, resulting in experimental interruptions or escalating safety risks.

[0004] Designing a special plunger pump to increase plunger cleaning would increase costs, and the altered design would make it difficult to integrate with other products. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a cleaning mechanism and a plunger pump having the mechanism, which solves the problem that the structure of existing plunger pumps is easily damaged by impurities.

[0006] The technical problem to be solved by this utility model is achieved by the following technical solution:

[0007] This utility model provides a cleaning mechanism, which includes a first component and a second component, wherein...

[0008] The first component and the second component are either integrally manufactured or assembled in combination;

[0009] The first component includes a hole and a groove, wherein,

[0010] The groove is connected to the communication hole of the second component;

[0011] The second component has a connecting hole whose end is an opening located outside the second component.

[0012] As a preferred embodiment of the present invention, the bottom of the first component is a cavity.

[0013] As a preferred embodiment of this utility model, two slots and two connecting holes are provided, and they correspond one to one.

[0014] This utility model also provides a plunger pump having the aforementioned cleaning mechanism, wherein the cleaning mechanism is disposed between the housing and the end cover, wherein...

[0015] The bottom of the end cap is provided with a cavity groove.

[0016] In a preferred embodiment of this invention, the housing portion includes a first plunger portion and a second plunger portion, wherein...

[0017] The second plunger portion passes through the hole in the first component portion.

[0018] As a preferred technical solution of this utility model, the annular protrusion in the first component divided by the groove forms a separation between the groove in the cavity and the cavity.

[0019] As a preferred embodiment of this utility model, the connecting hole is connected to an external circulation pump.

[0020] In a preferred embodiment of this invention, the housing portion is connected to a power unit, wherein...

[0021] The lead screw connected to the power unit is connected to the first plunger unit;

[0022] The end cap may also be connected to a control valve.

[0023] The beneficial effects of this utility model are as follows: The cleaning mechanism of this utility model can introduce fluid through an external circulation pump to clean the groove and sealing ring inside the cavity, thereby effectively removing impurities generated during the plunger's operation through fluid flow, achieving effective cleaning and avoiding risks and safety hazards such as damage to the sealing ring; it also improves the service life of the plunger pump and reduces damage to the plunger pump or equipment due to leakage problems; moreover, this cleaning mechanism can be directly installed into existing plunger pumps without requiring special design modifications to the plunger pump, avoiding increased manufacturing and usage costs, and also better adapting to other products. Attached Figure Description

[0024] Figure 1 This is one of the structural schematic diagrams of this utility model;

[0025] Figure 2 This is one of the structural schematic diagrams of this utility model;

[0026] Figure 3 This is one of the structural schematic diagrams of this utility model;

[0027] Figure 4 This is one of the structural schematic diagrams of this utility model;

[0028] Figure 5 This is one of the structural schematic diagrams of this utility model;

[0029] Figure 6 This is one of the structural schematic diagrams of this utility model;

[0030] Figure 7 This is one of the structural schematic diagrams of this utility model;

[0031] Figure 8 This is one of the structural schematic diagrams of this utility model;

[0032] Figure 9 This is one of the structural schematic diagrams of this utility model;

[0033] Figure 10 This is one of the structural schematic diagrams of this utility model;

[0034] In the diagram: 1. Power unit; 11. Lead screw; 2. Housing; 3. End cap; 31. Groove inside the cavity; 4. Control valve; 5. Cleaning mechanism; 51. First component; 511. Hole; 512. Groove; 513. Cavity; 52. Second component; 521. Opening; 522. Connecting hole; 61. First plunger; 62. Second plunger. Detailed Implementation

[0035] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0036] Example 1

[0037] like Figures 1-3 As shown, this embodiment provides a cleaning mechanism 5, which includes a first component 51 and a second component 52, wherein the first component 51 and the second component 52 are integrally manufactured or assembled in combination.

[0038] The first component 51 includes a hole 511 and a groove 512. The groove 512 is connected to the connecting hole 522 of the second component 52. When fluid enters the cleaning mechanism 5 through the connecting hole 522, it will flow out from the groove 512, thereby achieving the effect of cleaning the groove 31 and the sealing ring in the cavity 513, and removing impurities and crystals.

[0039] The second component 52 has a connecting hole 522 at the end of which is an opening 521 located outside the second component 52, which facilitates connection to an external circulation pump to introduce fluid for circulation within the cleaning mechanism 5.

[0040] Furthermore, the bottom of the first component 51 is a cavity 513 for installing a sealing ring.

[0041] Preferably, in this embodiment, there are two slots 512 and two connecting holes 522, and they correspond one to one.

[0042] Specifically, the cleaning mechanism 5 can be connected to an external circulation pump through a connecting hole 522 to introduce fluid for circulation within the cleaning mechanism 5. That is, after the fluid enters through one connecting hole 522, it flows out from the groove 512, achieving the effect of cleaning the sealing rings in the groove 31 and cavity 513 within the cavity, and removing impurities and crystals. Then, the fluid exits the cleaning mechanism 5 through another connecting hole 522, thus achieving circulation and cleaning.

[0043] Example 2

[0044] like Figures 4-10 As shown, this embodiment provides a plunger pump with a cleaning mechanism as in Embodiment 1. The cleaning mechanism 5 is disposed between the housing 2 and the end cover 3. The end cover 3 has a cavity groove 31 at its bottom, which is also used to install a sealing ring.

[0045] The housing 2 is provided with a first plunger 61 and a second plunger 62, wherein the second plunger 62 passes through the hole 511 of the first component 51.

[0046] The annular protrusion within the first component 51, which is divided by the groove 512, forms a separation between the groove 31 and the cavity 513 inside the cavity, enabling the installation of sealing rings within the groove 31 and the cavity 513.

[0047] The connecting hole 522 is connected to an external circulation pump.

[0048] The housing part 2 is connected to the power part 1, wherein the lead screw 11 connected to the power part 1 is connected to the first plunger part 61; the end cover 3 may also be connected to the control valve 4.

[0049] Specifically, in this embodiment, after the plunger pump is equipped with the cleaning mechanism 5 in embodiment 1, the cleaning mechanism 5 can be connected to an external circulation pump through the connecting hole 522 to introduce fluid for circulation within the cleaning mechanism 5. That is, after the fluid enters through one connecting hole 522, it flows out from the groove 512, achieving the effect of cleaning the sealing rings in the groove 31 and cavity 513 within the cavity, and removing impurities and crystals. Then, the fluid exits the cleaning mechanism 5 through another connecting hole 522, thus achieving circulation and cleaning.

[0050] The cleaning mechanism of this invention can introduce fluid through an external circulation pump to clean the grooves and sealing rings inside the cavity. This effectively removes impurities generated during the plunger's operation through fluid flow, achieving effective cleaning and avoiding risks such as damage to the sealing rings and safety hazards. It also extends the service life of the plunger pump and reduces damage to the plunger pump or equipment due to leakage. Furthermore, this cleaning mechanism can be directly installed into existing plunger pumps without requiring special design modifications, thus avoiding increased manufacturing and usage costs and better compatibility with other products.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cleaning mechanism, characterized in that, The cleaning mechanism (5) includes a first component (51) and a second component (52), wherein, The first component (51) and the second component (52) are integrally manufactured or assembled in combination; The first component (51) includes a hole (511) and a groove (512), wherein, The groove (512) is connected to the connecting hole (522) of the second component (52); The second component (52) has an opening (521) located outside the second component (52) at the end of its connecting hole (522).

2. The cleaning mechanism according to claim 1, characterized in that, The bottom of the first component (51) is a cavity (513).

3. The cleaning mechanism according to claim 1, characterized in that, The groove (512) and the connecting hole (522) are each provided in two parts, and they correspond one to one.

4. A plunger pump having a cleaning mechanism as described in any one of claims 1 to 3, characterized in that, The cleaning mechanism (5) is disposed between the housing part (2) and the end cap (3), wherein, The end cap (3) has a cavity groove (31) at its bottom.

5. A plunger pump according to claim 4, characterized in that, The housing portion (2) is provided with a first plunger portion (61) and a second plunger portion (62), wherein, The second plunger portion (62) passes through the hole portion (511) of the first component portion (51).

6. A plunger pump according to claim 4, characterized in that, The annular protrusion within the first component (51), which is divided by the groove (512), forms a separation between the groove (31) and the cavity (513) inside the cavity.

7. A plunger pump according to claim 4, characterized in that, The connecting hole (522) is connected to an external circulation pump.

8. A plunger pump according to claim 4, characterized in that, The housing part (2) is connected to the power unit (1), wherein, The lead screw (11) connected to the power unit (1) is connected to the first plunger unit (61). The end cap (3) may also be connected to a control valve (4).

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