Labor-saving anti-pinch hand pump

Abstract

The utility model discloses a labor-saving anti-pinch hand pump which comprises a pump cylinder, a water outlet pipe, a hook, a curve handle, a handle connecting base, a limiting check block, a lifting rod, a cylinder cover, a piston assembly, a pressing block, a leather cushion and a connecting flange. By means of the mode, the labor-saving anti-pinch hand pump is convenient to grasp and convenient to use, labor is saved when the hand pump is used, the hand clamping risk of the tail end of the handle and the pump cylinder is avoided through the limiting check block, in addition, a water receiving tool can be directly hung on the hook, and operation is labor-saving and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, in particular to a labor-saving and anti-pinching hand-crank pump. Background Art

[0002] Hand pumps are mainly used in water wells, garden irrigation, etc., and the pumping function is generally achieved by manually pressing the handle lever.

[0003] However, existing hand pump handles usually use straight handles, which are uncomfortable to grip and require a lot of effort to press. Moreover, when the handle is pressed to the lowest position, there is no limit block, which easily causes the risk of pinching the hand. In addition, when the existing hand pump is used to pump water, a bucket or other water-collecting tool needs to be placed under the water outlet pipe of the hand pump, and the user needs to bend over when collecting water and lifting water, which is laborious and inconvenient to operate. Utility Model Content

[0004] The utility model provides a labor-saving and anti-pinch hand pump, which has the advantages of being easy to use, portable and labor-saving, and has broad market prospects in the application and popularization of water pumps.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is:

[0006] Provided is a labor-saving and anti-pinch hand pump, which includes: a pump cylinder, a water outlet pipe, a hook, a curved handle, a handle connecting seat, a limit stopper, a lifting rod, a cylinder cover, a piston assembly, a pressure block, a leather pad, and a connecting flange.

[0007] The cylinder cover is provided on the top of the pump cylinder, and the connecting flange is provided on the bottom surface thereof. The leather pad is provided at the lower part of the pump cylinder, and the piston assembly is movably provided in the pump cylinder above the leather pad. The handle connecting seat and the water outlet pipe are provided on both sides of the upper part of the pump cylinder, and the water outlet pipe is provided with a hook for hanging a water receiving device. The curved handle is rotatably connected to the handle connecting seat through a rotating shaft, one end of the lifting rod is connected to the piston assembly, and the other end is connected to the upper end of the curved handle to drive the piston assembly to move up and down under the swing of the curved handle, and the limit block is provided on the outer side of the handle connecting seat and contacts with the curved handle to limit the swing range of the handle to prevent hand pinching.

[0008] In a preferred embodiment of the utility model, the piston assembly includes a piston upper seat, a piston lower seat, a water stop valve, and a sealing leather cup. The water stop valve can be raised and lowered in the cavity formed between the piston upper seat and the piston lower seat. The inner ring of the sealing leather cup is arranged around the connection between the piston upper seat and the piston lower seat, and its outer portion contacts the inner wall of the pump cylinder for sealing.

[0009] In a preferred embodiment of the present utility model, a pressure block for limiting the upward movement position of the leather pad is arranged in the pump cylinder above the leather pad.

[0010] In a preferred embodiment of the present invention, the water outlet pipe and the hook are welded or integrated structures.

[0011] The beneficial effects of the utility model are: not only is it convenient to grasp and easy to use, but also the limit block is used to avoid the risk of pinching the hand between the handle end and the pump cylinder. In addition, the water collection tool can be directly hung on the hook, which is easy and labor-saving to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0013] Figure 1 This is a structural schematic diagram of a preferred embodiment of a labor-saving and anti-pinch hand pump of the utility model;

[0014] Figure 2 The utility model is a schematic cross-sectional structural diagram of a preferred embodiment of a labor-saving and anti-pinch hand pump. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] See also Figure 1-2 , the utility model embodiment includes:

[0017] A labor-saving and anti-pinch hand pump, the structure of which includes: a pump cylinder 1, a water outlet pipe 2, a hook 3, a curved handle 4, a handle connecting seat 5, a limit stopper 6, a lifting rod 7, a cylinder cover 8, a piston assembly, a water stop valve 9, a sealing leather cup 10, a pressure block 11, a leather pad 12, and a connecting flange 13.

[0018] The cylinder cover is arranged on the top of the pump cylinder, the connecting flange is arranged on the bottom thereof, the leather pad is arranged at the connection between the connecting flange and the pump cylinder, the water stop valve and the sealing leather cup are arranged on the piston assembly, and the piston assembly is movably arranged in the pump cylinder above the leather pad.

[0019] Among them, the piston assembly, water stop valve sealing cup, pressure block, and leather pad can all be made by common technical means in this field, and this case does not involve improvements to them themselves and their connection methods.

[0020] Further preferably, the piston includes a piston upper seat 14 and a piston lower seat 15, and the water stop valve is movably arranged in the cavity formed between the piston upper seat and the piston lower seat, and the inner ring of the sealing leather cup is arranged around the connection between the piston upper seat and the piston lower seat, and its outer part contacts the inner wall of the pump cylinder for sealing.

[0021] Further preferably, a pressure block for limiting the upward position of the leather pad is provided in the pump cylinder above the leather pad.

[0022] The handle connecting seat and the water outlet pipe are arranged on both sides of the upper part of the pump cylinder. The water outlet pipe is provided with a hook for hanging a water receiving device such as a bucket. The curved handle is rotatably connected to the handle connecting seat through a rotating shaft. One end of the lifting rod is connected to the piston assembly, and the other end is connected to the upper end of the curved handle to drive the piston assembly to move up and down under the swing of the curved handle. The limit block is arranged on the outside of the handle connecting seat and contacts the curved handle to limit the swing range of the handle to prevent hands from being pinched.

[0023] Further preferably, the water outlet pipe and the hook are welded or integrated structures.

[0024] When in use, hang a bucket or other container on the hook; press the curved handle, use the lever principle to transmit force to the piston part through the lifting rod. When the piston assembly moves downward, the water stop valve moves upward under the pressure of the water, and water flows from the water stop valve through the piston upper seat and then flows out from the water outlet pipe; when the curved handle is pressed to the lowest position, it is blocked by the limit block and stopped. When the handle moves upward, the water stop valve falls and closes, negative pressure is formed in the pump cylinder, and the water flow pushes open the leather pad and the pressure block and enters the pump cylinder; this reciprocating process realizes the water pumping function.

[0025] The beneficial effects of the labor-saving and anti-pinch hand pump of the utility model are:

[0026] 1. The handle is designed with ergonomic curves, which makes it easier to hold and save effort when pressing.

[0027] 2. When the handle is pressed to the lowest position, a limit stopper is set on the handle connection seat, and the handle will be blocked by the limit stopper to avoid the risk of pinching the hand at the end of the handle and the pump cylinder;

[0028] 3. There is a hook on the water outlet pipe, and the bucket can be hung directly on the hook without bending over, which is labor-saving and convenient to operate.

[0029] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A labor-saving and anti-pinch hand pump, characterized in that: include: Pump cylinder, water outlet pipe, hook, curved handle, handle connecting seat, limit stopper, lifting rod, cylinder cover, piston assembly, pressure block, leather pad, connecting flange, The cylinder cover is provided on the top of the pump cylinder, and the connecting flange is provided on the bottom surface thereof. The leather pad is provided at the lower part of the pump cylinder, and the piston assembly is movably provided in the pump cylinder above the leather pad. The handle connecting seat and the water outlet pipe are provided on both sides of the upper part of the pump cylinder, and the water outlet pipe is provided with a hook for hanging a water receiving device. The curved handle is rotatably connected to the handle connecting seat through a rotating shaft, one end of the lifting rod is connected to the piston assembly, and the other end is connected to the upper end of the curved handle to drive the piston assembly to move up and down under the swing of the curved handle, and the limit block is provided on the outer side of the handle connecting seat and contacts with the curved handle to limit the swing range of the handle to prevent hand pinching.

2. The labor-saving anti-pinch hand pump according to claim 1, characterized in that: The piston assembly includes a piston upper seat, a piston lower seat, a water stop valve, and a sealing leather cup. The water stop valve can be raised and lowered in the cavity formed between the piston upper seat and the piston lower seat. The inner ring of the sealing leather cup is wound around the connection between the piston upper seat and the piston lower seat, and its outer portion contacts the inner wall of the pump cylinder for sealing.

3. The labor-saving and anti-pinch hand pump according to claim 1, characterized in that: A pressure block for limiting the upward movement position of the leather pad is arranged in the pump cylinder above the leather pad.

4. The labor-saving and anti-pinch hand pump according to claim 1, characterized in that: The water outlet pipe and the hook are welded or integrated structures.

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