A piston liquid pump

Abstract

The utility model discloses a piston type liquid pump, including pump body and motor, pump body includes cavity and plug body, and the top of cavity sets up liquid inlet and liquid outlet, and liquid inlet assembly liquid -admission check valve, and liquid outlet assembly liquid -discharge check valve, and the inner wall of cavity is slidably assembled plug body, the output of motor sets up eccentric shaft, and eccentric shaft is connected the bottom of plug body through drive. Therefore, only need small -size rotating motor can drive piston type pump body to carry out reciprocating motion, realizes interval liquid extraction, need not to configure the motor winding of big volume big weight, and the overall volume weight is reduced greatly, and piston type pump body failure rate is low, possesses longer life.

Description

Technical Field

[0001] This utility model relates to the field of liquid pump technology, and in particular to a piston liquid pump. Background Technology

[0002] Liquid pumps have a wide range of applications. In addition to pumping water and draining water in homes, they can also be used to extract engine oil, fuel, and coolant in vehicle malfunctions, providing assistance in emergency situations. However, most existing liquid pumps are vane pumps. To handle scenarios involving the extraction of viscous oils, their drive motors require high power, resulting in larger drive motor windings and rotors. Consequently, the vane pumps are also relatively large and heavy, sometimes weighing tens of kilograms, making them difficult to carry around in vehicles for extended periods and inconvenient to use in emergency situations. Utility Model Content

[0003] This embodiment discloses a piston-type liquid pump, specifically including:

[0004] Pump body 1 and motor 2;

[0005] The pump body 1 includes a cavity 11 and a plug 12. The top of the cavity 11 is provided with an inlet 111 and an outlet 112. The inlet 111 is equipped with an inlet check valve 113, and the outlet 112 is equipped with an outlet check valve 114. The plug 12 is slidably mounted on the inner wall of the cavity 11.

[0006] An eccentric shaft 21 is provided at the output end of the motor 2, and the eccentric shaft 21 is connected to the bottom of the plug body 12 via a drive rod 3.

[0007] As an optional implementation, the outer wall surface of the plug 12 is fitted with a sealing ring 121, and the plug 12 is tightly fitted to the inner wall of the cavity 11 based on the sealing ring 121.

[0008] As an optional implementation, the inlet 111 and the outlet 112 are provided with reducing connectors for assembling the inlet pipe and the outlet pipe.

[0009] As an optional implementation, the motor 2 drives the eccentric shaft 21 to rotate, and through the drive rod 3, drives the plug 12 to reciprocate in the cavity 11.

[0010] As an optional implementation, the liquid inlet check valve 113 is used to open toward the inside of the cavity 11 when the plug 12 moves toward the bottom of the cavity 11, so as to draw liquid from the liquid inlet 111.

[0011] As an optional implementation, the liquid outlet check valve 114 is used to open toward the liquid outlet 112 when the plug 12 moves toward the top of the cavity 11, so as to discharge the liquid in the cavity 11 from the liquid outlet 112.

[0012] As an optional implementation, when the inlet check valve 113 is open, the outlet check valve 114 is closed;

[0013] When the liquid outlet check valve 114 is opened, the liquid inlet check valve 113 is closed.

[0014] As an optional implementation, the reducing connector of the liquid inlet 111 is arranged in the opposite direction to the reducing connector of the liquid outlet 112.

[0015] As an optional implementation, the pump body 1 and the motor 2 are securely assembled inside the portable housing K;

[0016] The portable housing K is provided with a handle K1 on its top.

[0017] As an optional implementation, a button K2 and a power interface K3 are provided on one side of the portable housing K;

[0018] The button K2 is relayed to the wiring terminal 22 of the motor 2 and the power interface K3.

[0019] Compared with the prior art, this embodiment has the following beneficial effects:

[0020] In this embodiment, only a small rotary motor is needed to drive the piston pump body to reciprocate, realizing intermittent liquid extraction. There is no need to configure a large-volume and heavy motor winding, which greatly reduces the overall size and weight. In addition, the piston pump body has a low failure rate and a longer service life. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this embodiment, the accompanying drawings used in the embodiment will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural schematic diagram of a piston-type liquid pump disclosed in this embodiment;

[0023] Figure 2 This is a cross-sectional structural schematic diagram of a piston-type liquid pump disclosed in this embodiment;

[0024] Figure 3This is another cross-sectional structural schematic diagram of a piston-type liquid pump disclosed in this embodiment;

[0025] Figure 4 This is a three-dimensional structural diagram of a piston liquid pump assembled in a portable housing, as disclosed in this embodiment.

[0026] Figure 5 This is a partial structural diagram of a piston-type liquid pump assembled in a portable housing, as disclosed in this embodiment.

[0027] The specific structural component comparison table is as follows:

[0028] Detailed Implementation

[0029] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] Please see Figures 1-5 This embodiment discloses a piston-type liquid pump, comprising:

[0031] Pump body 1 and motor 2;

[0032] The pump body 1 includes a cavity 11 and a plug 12. The top of the cavity 11 is provided with an inlet 111 and an outlet 112. An inlet check valve 113 is installed in the inlet 111, and an outlet check valve 114 is installed in the outlet 112. The plug 12 is slidably installed on the inner wall of the cavity 11.

[0033] An eccentric shaft 21 is provided at the output end of the motor 2, and the eccentric shaft 21 is connected to the bottom of the plug body 12 via the drive rod 3.

[0034] In this embodiment, the motor 2 drives the plug 12 to reciprocate in the cavity 11 based on the eccentric shaft 21. When the plug 12 is withdrawn from the cavity 11, liquid is drawn from the inlet 111 through the liquid inlet check valve 113. When the plug 12 is pushed into the cavity 11, liquid is discharged from the cavity 11 through the liquid outlet check valve 114, thus realizing intermittent extraction.

[0035] Compared to common fan pumps, it only requires a small-power, small-volume rotating motor 2 to achieve efficient liquid extraction. The liquid does not come into direct contact with the rotating parts, which not only greatly reduces the overall size and weight, but also has a lower failure rate and a longer service life.

[0036] As an optional implementation, a sealing ring 121 is fitted to the outer wall surface of the plug body 12, and the plug body 12 is tightly fitted to the inner wall of the cavity 11 based on the sealing ring 121.

[0037] Here, the plug 12 is tightly fitted with the cavity 11 based on the sealing ring 121, thereby ensuring that the liquid does not leak out.

[0038] As an optional implementation, the inlet 111 and outlet 112 are provided with reducing fittings for the outer casing to assemble the inlet pipe and outlet pipe.

[0039] Here, the reducer can be easily fitted with various types of flexible hoses for convenient daily use.

[0040] As an optional implementation, the motor 2 drives the eccentric shaft 21 to rotate, and through the drive rod 3, drives the plug 12 to reciprocate in the cavity 11.

[0041] As an optional implementation, the liquid inlet check valve 113 is used to open toward the inside of the cavity 11 when the plug 12 moves toward the bottom of the cavity 11, so as to draw liquid from the liquid inlet 111.

[0042] As an optional implementation, the liquid outlet check valve 114 is used to open toward the liquid outlet 112 when the plug 12 moves toward the top of the cavity 11, so as to discharge the liquid in the cavity 11 from the liquid outlet 112.

[0043] As an optional implementation, when the inlet check valve 113 is open, the outlet check valve 114 is closed;

[0044] When the outlet check valve 114 is opened, the inlet check valve 113 is closed.

[0045] In this piston pump body 1, there are no rotating parts such as fan blades, paddle blades, or screws that come into direct contact with the liquid, effectively avoiding wear and tear or contamination of the rotating parts due to aging or liquid contamination.

[0046] As an optional implementation, the reducing connector of the liquid inlet 111 is arranged in opposite directions to the reducing connector of the liquid outlet 112.

[0047] Here, the inlet 111 and outlet 112, which are set in opposite directions, are easy to identify. Arrows and other markings can also be set on the outside of them to help users intuitively know how to connect the pipeline.

[0048] As an optional implementation, the pump body 1 and the motor 2 are securely assembled inside the portable housing K;

[0049] A carrying handle K1 is provided on the top of the portable case K.

[0050] As an optional implementation, a button K2 and a power interface K3 are provided on one side of the portable housing K;

[0051] Button K2 is connected to terminal 22 of motor 2 and power interface K3 via relay.

[0052] Here, the pump body 1 and motor 2 are assembled inside the portable housing K, which makes it lightweight and portable, and can be carried in vehicles for a long time.

[0053] In addition, only button K2 is used for opening and closing control to avoid reducing the overall reliability due to additional components and structural parts.

[0054] Compared with the prior art, this embodiment has the following beneficial effects:

[0055] In this embodiment, only a small rotary motor is needed to drive the piston pump body to reciprocate, realizing intermittent liquid extraction. There is no need to configure a large-volume and heavy motor winding, which greatly reduces the overall size and weight. In addition, the piston pump body has a low failure rate and a longer service life.

Claims

1. A piston-type liquid pump, characterized in that, include: Pump body (1) and motor (2); The pump body (1) includes a cavity (11) and a plug (12). The top of the cavity (11) is provided with an inlet (111) and an outlet (112). The inlet (111) is equipped with an inlet check valve (113), and the outlet (112) is equipped with an outlet check valve (114). The plug (12) is slidably mounted on the inner wall of the cavity (11). An eccentric shaft (21) is provided at the output end of the motor (2), and the eccentric shaft (21) is connected to the bottom of the plug (12) via a drive rod (3).

2. A piston-type liquid pump according to claim 1, characterized in that, include: The outer wall of the plug (12) is fitted with a sealing ring (121), and the plug (12) is tightly fitted to the inner wall of the cavity (11) based on the sealing ring (121).

3. A piston-type liquid pump according to claim 2, characterized in that, include: The inlet (111) and outlet (112) are provided with reducing connectors for assembling the inlet pipe and outlet pipe on the outer casing.

4. A piston-type liquid pump according to claim 1, characterized in that, include: The motor (2) drives the eccentric shaft (21) to rotate, and through the drive rod (3), drives the plug (12) to reciprocate in the cavity (11).

5. A piston-type liquid pump according to claim 4, characterized in that, include: The liquid inlet check valve (113) is used to open toward the inside of the cavity (11) when the plug (12) moves toward the bottom of the cavity (11) to draw liquid from the liquid inlet (111).

6. A piston-type liquid pump according to claim 5, characterized in that, include: The liquid outlet check valve (114) is used to open toward the liquid outlet (112) when the plug (12) moves toward the top of the cavity (11) to discharge the liquid in the cavity (11) from the liquid outlet (112).

7. A piston-type liquid pump according to claim 6, characterized in that, include: When the inlet check valve (113) is opened, the outlet check valve (114) is closed; When the liquid outlet check valve (114) is opened, the liquid inlet check valve (113) is closed.

8. A piston-type liquid pump according to claim 1, characterized in that, include: The reduced diameter connector of the liquid inlet (111) is arranged in the opposite direction to the reduced diameter connector of the liquid outlet (112).

9. A piston-type liquid pump according to claim 1, characterized in that, include: The pump body (1) and the motor (2) are securely assembled inside the portable housing (K); The portable housing (K) is provided with a handle (K1) on its top.

10. A piston-type liquid pump according to claim 9, characterized in that, include: A button (K2) and a power interface (K3) are provided on one side of the portable housing (K). The button (K2) is relayed to the wiring terminal (22) of the motor (2) and the power interface (K3).

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