Hand-operated water pump

Abstract

The utility model relates to the technical field of liquid pumping equipment, in particular to a hand-operated water pump. The hand-operated water pump comprises a base; the two barrels are mounted on the base side by side; the liquid inlet pipe comprises a main pipe and two branch pipes, the first ends of the two branch pipes are respectively communicated with the main pipe, and the second ends of the two branch pipes are respectively communicated with the two barrels; one ends of the two piston assemblies extend into the two barrels respectively, and the piston assemblies are connected with the corresponding barrels in a sliding mode; the charging barrel is mounted on the two barrel bodies and is communicated with the two barrel bodies respectively; the first end of the rocking handle is hinged to the charging barrel, and the two sides of the first end of the rocking handle are connected with the other ends of the two piston assemblies respectively; one end of the liquid outlet pipe is communicated with the charging barrel. And when the electric pump cannot be electrified, the hand-operated water pump can realize uninterrupted liquid transfer, so that the workload of workers is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of liquid pumping equipment, and in particular to a hand-cranked water pump. Background Art

[0002] When carrying out flood prevention and control work outdoors in summer, it is necessary to drain the accumulated water in the equipment area or low-lying areas to ensure that the equipment will not be damaged.

[0003] At present, the accumulated water in the equipment area or low-lying areas can be drained by electric pumps. However, when the flood situation is severe, the electric pump cannot be powered on due to equipment power outages and emergency power failures. Workers are required to use water-holding tools to gradually drain the accumulated water in the equipment area or low-lying areas, which results in a heavy workload for the workers. Utility Model Content

[0004] Based on this, the present application provides a hand-cranked water pump to solve the problem in the related technology that when the electric pump cannot be powered on, the staff needs to use water-holding tools to gradually drain the accumulated water in the equipment area or low-lying areas, which results in a heavy workload for the staff.

[0005] The hand-cranked water pump provided in this application comprises:

[0006] Base;

[0007] Two cylinders, the two cylinders are installed side by side on the base;

[0008] The liquid inlet pipe comprises a main pipe and two branch pipes, wherein the first ends of the two branch pipes are respectively connected to the main pipe, and the second ends of the two branch pipes are respectively connected to the two cylinders;

[0009] Two piston assemblies, one end of each of the two piston assemblies extends into the interior of the two cylinders respectively, and the piston assemblies are slidably connected with the corresponding cylinders;

[0010] A barrel, mounted on the two barrels and connected to the two barrels respectively;

[0011] A crank handle, wherein the first end of the crank handle is hingedly mounted on the barrel, and the two sides of the first end of the crank handle are respectively connected to the other ends of the two piston assemblies;

[0012] One end of the liquid outlet pipe is connected with the barrel.

[0013] In one possible implementation, the crank includes a first connecting rod and a second connecting rod, one end of the first connecting rod is fixedly connected to the middle of the second connecting rod, the second connecting rod is hingedly mounted on the barrel, and both ends of the second connecting rod are respectively connected to the second ends of the two piston assemblies.

[0014] In a possible implementation, the crank also includes two reinforcing rods, the extension direction of the reinforcing rods is inclined to the extension direction of the first connecting rod, one end of the two reinforcing rods is respectively connected to the two ends of the second connecting rod, and the other ends of the two reinforcing rods are respectively connected to the first connecting rod.

[0015] In one possible implementation, the piston assembly includes a piston and a connecting piece, the piston is arranged at one end of the connecting piece, the piston extends into the interior of the cylinder and is slidably connected to the cylinder, a hook-shaped portion is provided at the end of the connecting piece away from the piston, and a hanging hole is provided at the end of the second connecting rod, and the hook-shaped portion is hung on the hanging hole.

[0016] In a possible implementation, a sealing ring is sleeved on the side surface of the piston.

[0017] In a possible implementation, two support members are spaced apart inside the barrel, a middle portion of the second connecting rod is located between the two support members, and the second connecting rod is hinged to the two support members respectively.

[0018] In a possible implementation, the hand-cranked water pump also includes a first locking member and a second locking member, the first locking member passes through the second connecting rod and two supporting members, the second locking member is installed on the first locking member, and the two supporting members are located between the head of the first locking member and the second locking member.

[0019] In a possible implementation, the base is provided with a plurality of first support rods, the bottom of the barrel is provided with a flange, and the top end of each first support rod passes through the flange and is fixedly connected to the flange.

[0020] In a possible implementation, two fixing members are installed on the top end of each first support rod, and the flange is clamped between the two fixing members.

[0021] In one possible implementation, the base also includes a first support plate, a second support plate and a plurality of second support rods, the second support plate is located above the first support plate, the plurality of second support rods are connected between the first support plate and the second support plate, the cylinder is mounted on the second support plate, and the liquid inlet pipe is located between the first support plate and the second support plate.

[0022] The hand-cranked water pump provided in the present application includes a base, two cylinders, a liquid inlet pipe, two piston assemblies, a barrel, a crank and a liquid outlet pipe. The base of the hand-cranked water pump can play a supporting role, and the liquid inlet pipe can be extended to the area where liquid needs to be pumped through the pipeline. The staff can shake the crank to drive the two piston assemblies to reciprocate, and the two piston assemblies can drive the two cylinders to alternately extract liquid. The liquid extracted from the cylinders can enter the barrel and be discharged from the liquid outlet pipe. In this way, when the electric pump cannot be powered on, uninterrupted liquid transfer can be achieved, reducing the workload of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 The structure of the hand-cranked water pump provided in the embodiment of the present application is schematically shown. Figure 1 ;

[0025] Figure 2 The structure of the hand-cranked water pump provided in the embodiment of the present application is schematically shown. Figure 2 ;

[0026] Figure 3 An exploded view of a hand-cranked water pump provided in an embodiment of the present application;

[0027] Figure 4 A front view of a hand-cranked water pump provided in an embodiment of the present application;

[0028] Figure 5 A left view of a hand-cranked water pump provided in an embodiment of the present application;

[0029] Figure 6 A right side view of a hand-cranked water pump provided in an embodiment of the present application;

[0030] Figure 7 A rear view of a hand-cranked water pump provided in an embodiment of the present application;

[0031] Figure 8 A bottom view of a hand-cranked water pump provided in an embodiment of the present application;

[0032] Fig. 9 A top view of a hand-cranked water pump provided in an embodiment of the present application;

[0033] Fig.10 A cross-sectional view of a hand-cranked water pump provided in an embodiment of the present application;

[0034] Fig.11 A schematic diagram of the structure of a crank provided in an embodiment of the present application;

[0035] Fig.12 A schematic diagram of the connection between the barrel and the liquid outlet pipe provided in an embodiment of the present application.

[0036] Description of reference numerals:

[0037] 100 - base; 110 - first support rod; 111 - fixing member; 120 - first support plate; 130 - second support plate; 140 - second support rod;

[0038] 200-cylinder;

[0039] 300-liquid inlet pipe; 310-main pipe; 320-branch pipe;

[0040] 400-piston assembly; 410-piston; 420-connecting piece; 421-hook portion;

[0041] 500-barrel; 510-support; 520-flange;

[0042] 600-crank handle; 610-first connecting rod; 620-second connecting rod; 621-hanging hole; 630-reinforcement rod;

[0043] 700-liquid outlet pipe;

[0044] 810 - first locking member; 820 - second locking member. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme in the embodiment of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application. The embodiments of the present application are described in detail below in conjunction with the drawings.

[0046] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are orientations or positional relationships based on the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0048] The terms "first", "second" and "third" (if any) in the specification and claims of this application and the above drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0049] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or display comprising a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, product, or display.

[0050] In the prior art, water in the equipment area or low-lying areas can be drained by electric pumps. However, when the flood situation is serious, the electric pump cannot be powered on due to power outages and emergency power failures. Workers need to use water-holding tools to gradually drain the water in the equipment area or low-lying areas, which causes a lot of work for the workers. The manual pump in the prior art can manually drive the piston to reciprocate relative to the cylinder. However, the piston can only drive the cylinder to pump liquid during one section of the reciprocating motion, so that the manual pump can only pump liquid intermittently, with low pumping efficiency and a lot of work for the workers.

[0051] After repeated thinking and verification, the inventor found that if the manual pump has two cylinders side by side, a piston is set in each cylinder, and a crank is set on the manual pump to drive the piston to reciprocate relative to the cylinder, and at the same time, when the staff shakes the crank, the pistons in the two cylinders move alternately. In this way, uninterrupted liquid pumping can be achieved without power, improving the efficiency of liquid pumping and reducing the workload of the staff.

[0052] In view of this, the inventor designed a hand-cranked water pump, which is provided by installing two cylinders side by side on the base, using two piston assemblies to be slidably connected to the two cylinders respectively, and the two piston assemblies are respectively connected to the crank handle, which is hingedly installed on the barrel, and the barrel is respectively connected to the two cylinders. The liquid inlet pipe is respectively connected to the two cylinders, and the liquid outlet pipe is connected to the barrel. In this way, when power cannot be supplied, the staff can drive the two piston assemblies to move alternately when shaking the crank handle, and then the two cylinders can pump liquid alternately, realizing uninterrupted pumping of the hand-cranked water pump, reducing the workload of the staff.

[0053] The technical solution of the hand-cranked water pump provided in the embodiment of the present application is described in detail below in conjunction with the accompanying drawings.

[0054] Reference Figures 1 to 10As shown, the hand-cranked water pump provided in the embodiment of the present application includes a base 100, two cylinders 200, a liquid inlet pipe 300, two piston assemblies 400, a barrel 500, a crank 600 and a liquid outlet pipe 700. The two cylinders 200 are installed side by side on the base 100; the liquid inlet pipe 300 includes a main pipe 310 and two branch pipes 320, the first ends of the two branch pipes 320 are respectively connected to the main pipe 310, and the second ends of the two branch pipes 320 are respectively connected to the two cylinders 200; one end of the two piston assemblies 400 extends into the interior of the two cylinders 200, and the piston assemblies 400 are slidably connected to the corresponding cylinders 200; the barrel 500 is installed on the two cylinders 200 and is respectively connected to the two cylinders 200; the first end of the crank 600 is hingedly installed on the barrel 500, and the two sides of the first end of the crank 600 are respectively connected to the other ends of the two piston assemblies 400; one end of the liquid outlet pipe 700 is connected to the barrel 500.

[0055] It is understandable that the base 100 can play a role in supporting the hand-cranked water pump, and the hand-cranked water pump can be placed in a preset position before pumping liquid. Exemplarily, the two cylinders 200 have the same structure, and have the same height when the two cylinders 200 are installed on the base 100. Exemplarily, the length of the base 100 can be 620 mm, and the width of the base 100 can be 320 mm. The diameter of the cylinder 200 can be 90 mm.

[0056] Schematically, the liquid inlet pipe 300 can be installed on the base 100, the second ends of the two branch pipes 320 can be located at the bottom of the two cylinders 200 and communicated with the two cylinders 200 respectively, and the end of the main pipe 310 away from the branch pipe 320 can be connected to an external pipeline, and the pipeline can extend to the position where liquid needs to be pumped. Optionally, a one-way valve can be installed on the main pipe 310 of the liquid inlet pipe 300, or a one-way valve can be set at the position where the cylinder 200 is connected to the branch pipe 320, and the one-way valve can prevent the liquid in the cylinder 200 from flowing back.

[0057] In a possible implementation, one-way valves may be provided on the two piston assemblies 400, respectively. When the piston assembly 400 descends relative to the corresponding cylinder 200, the one-way valve opens, and when the piston assembly 400 ascends relative to the corresponding cylinder 200, the one-way valve closes. In this way, when the piston assembly 400 reciprocates relative to the cylinder 200, the cylinder 200 can pump liquid.

[0058] Exemplarily, a through hole communicating with the barrel 200 is provided at the position of the barrel 500 facing the barrel 200, and the through hole is arranged facing the barrel 200, and the liquid in the barrel 200 can enter the interior of the barrel 500 through the through hole. The present embodiment does not limit the cross-sectional shape of the barrel 500, such as circular, rectangular or elliptical, and those skilled in the art can set it as needed. Optionally, the barrel 500 can be fixed to the two barrels 200 by welding after being arranged on the two barrels 200. Exemplarily, the length of the barrel 500 can be 360mm, and the width of the barrel 500 can be 110mm.

[0059] It can be understood that the first end of the crank handle 600 can rotate relative to the barrel 500. Since the two piston assemblies 400 are respectively connected to the two sides of the first end of the crank handle 600, when the staff shakes the crank handle 600 to rotate relative to the barrel 500, the crank handle 600 can drive the two piston assemblies 400 to move alternately, and then the two cylinders 200 of the hand-cranked water pump can achieve uninterrupted liquid pumping.

[0060] Figure 1-Figure 10 As shown, the liquid outlet pipe 700 can be connected to the side wall of the barrel 500 , and when the liquid in the barrel body 200 enters the barrel 500 , it can be discharged from the liquid outlet pipe 700 .

[0061] Optionally, hot-dip galvanizing can be used on the components of the hand-cranked water pump, so that the corrosion resistance of the hand-cranked water pump is ≤1.5g / ㎡. For example, the hand-cranked water pump provided in this embodiment has a flame retardancy (oxygen index method) of ≥27%; a bending strength of 180MPa; an impact strength of ≥70kJ / ㎡; and a heat deformation temperature of ≥200℃.

[0062] The hand-cranked water pump provided in this embodiment needs to be checked before use, and the parts such as the barrel 500 and the piston assembly 400 need to be well sealed, and can only be used after the inspection is qualified. A pipeline is connected to the liquid inlet pipe 300, and the pipeline extends to the position where the liquid needs to be pumped. Before using the hand-cranked water pump, the corresponding liquid needs to be poured into the barrel 500, and the liquid enters the two cylinders 200 through the barrel 500 and covers one end of the two piston assemblies 400 that extends into the cylinder 200. After pouring the corresponding liquid, the staff needs to quickly shake the handle 600, and when the liquid flows out of the liquid outlet pipe 700, the speed of shaking the handle 600 can be slowed down. After using the hand-cranked water pump, it is necessary to clean the liquid in the hand-cranked water pump to prevent the parts of the hand-cranked water pump from corrosion and ensure the service life of the hand-cranked water pump.

[0063] The hand-cranked water pump provided in this embodiment has no special requirements on the ambient temperature, storage temperature and atmospheric pressure, and the relative humidity must be maintained at ≦95% during use.

[0064] The hand-cranked water pump provided in this embodiment includes a base 100, two cylinders 200, a liquid inlet pipe 300, two piston assemblies 400, a barrel 500, a crank 600 and a liquid outlet pipe 700. The base 100 of the hand-cranked water pump can play a supporting role, the liquid inlet pipe 300 can be extended to the area where liquid needs to be pumped through the pipeline, the staff can shake the crank 600 to drive the two piston assemblies 400 to reciprocate, the two piston assemblies 400 can drive the two cylinders 200 to alternately extract liquid, and the liquid extracted from the cylinder 200 can enter the barrel 500 and be discharged from the liquid outlet pipe 700. In this way, when the electric pump cannot be powered on, uninterrupted liquid transfer can be achieved, reducing the workload of the staff.

[0065] In one embodiment, Figure 1 , Figure 3 , Fig. 9 and Fig.11 As shown, the crank 600 includes a first connecting rod 610 and a second connecting rod 620. One end of the first connecting rod 610 is fixedly connected to the middle of the second connecting rod 620. The second connecting rod 620 is hingedly mounted on the barrel 500, and both ends of the second connecting rod 620 are respectively connected to the second ends of the two piston assemblies 400.

[0066] Schematically, the first connecting rod 610 and the second connecting rod 620 form an approximate "T"-shaped structure, and the middle part of the top of the "T"-shaped structure is hingedly mounted on the barrel 500. When the second connecting rod 620 rotates relative to the barrel 500, the piston assembly 400 connected to the end of the second connecting rod 620 can be driven to move relative to the cylinder 200. In a possible implementation, the first connecting rod 610 and the second connecting rod 620 can be fixed by welding. This embodiment does not limit the length of each of the first connecting rod 610 and the second connecting rod 620, and those skilled in the art can set it as needed.

[0067] In this structure, a worker can hold the top of the first connecting rod 610 to shake the handle 600 , and the first connecting rod 610 can drive the second connecting rod 620 to rotate relative to the barrel 500 , thereby driving the piston assembly 400 to move relative to the cylinder body 200 .

[0068] like Figure 1 , Figure 3 and Fig.11 As shown, in a specific embodiment, the crank 600 further includes two reinforcing rods 630. The extending direction of the reinforcing rod 630 is inclined to the extending direction of the first connecting rod 610, one end of the two reinforcing rods 630 is respectively connected to the two ends of the second connecting rod 620, and the other ends of the two reinforcing rods 630 are respectively connected to the first connecting rod 610.

[0069] Illustratively, the two reinforcing rods 630 are symmetrically arranged relative to the first connecting rod 610 , and both ends of the reinforcing rod 630 can be respectively connected to the first connecting rod 610 and the second connecting rod 620 by welding.

[0070] This structure can improve the structural strength of the crank handle 600 by providing a reinforcing rod 630, so that the second connecting rod 620 of the crank handle 600 is not easily bent or deformed during repeated shaking, which is beneficial to improving the service life of the hand-cranked water pump.

[0071] like Figure 3 and Fig. 9 As shown, the piston assembly 400 includes a piston 410 and a connecting member 420. The piston 410 is disposed at one end of the connecting member 420, and the piston 410 extends into the interior of the cylinder 200 and is slidably connected to the cylinder 200. A hook-shaped portion 421 is disposed at one end of the connecting member 420 away from the piston 410, and a hanging hole 621 is disposed at the end of the second connecting rod 620, and the hook-shaped portion 421 is hung on the hanging hole 621.

[0072] It can be understood that when the piston 410 reciprocates inside the cylinder 200, it can drive the cylinder 200 to pump liquid. Figure 3 It is shown that the connecting member 420 can be a rod-shaped structure, and the bottom end of the rod-shaped structure is connected to the piston 410. Schematically, the hanging hole 621 on the second connecting rod 620 can be a waist-shaped hole. When the hook-shaped portion 421 is hung on the hanging hole 621, there is a certain movable space between the connecting member 420 and the second connecting rod 620, so that when the second connecting rod 620 rotates relative to the barrel 500, it can drive the connecting member 420 and the piston 410 to move, and at the same time, there will be no interference between the second connecting rod 620 and the connecting member 420.

[0073] In this embodiment, the second connecting rod 620 can drive the piston 410 to slide relative to the cylinder 200. At the same time, the assembly between the second connecting rod 620 and the connecting member 420 is relatively easy, which is conducive to improving the assembly efficiency of the hand-cranked water pump.

[0074] Optionally, a sealing ring is provided on the side of the piston 410 .

[0075] It can be understood that the piston 410 is in sliding contact with the inner wall of the cylinder 200 through the sealing ring. For example, an annular groove can be provided on the side of the piston 410. After the sealing ring is sleeved on the piston 410, part of the sealing ring can extend into the annular groove. The annular groove can limit the sealing ring and ensure the reliability of the connection between the sealing ring and the piston 410. Among them, the piston 410 can be sleeved with one sealing ring or multiple sealing rings, which is not limited here.

[0076] By providing a sealing ring, the sealing effect between the piston 410 and the cylinder 200 is improved, so that the piston 410 can more easily drive the cylinder 200 to pump liquid.

[0077] like Fig. 9 and Fig.12 As shown, two support members 510 are spaced apart inside the barrel 500. The middle of the second connecting rod 620 is located between the two support members 510, and the second connecting rod 620 is hinged to the two support members 510 respectively.

[0078] Exemplarily, each support member 510 may be a strip-shaped sheet structure, and two support members 510 are arranged in parallel. The bottom end of each support member 510 may be installed inside the barrel 500 by welding. The middle part of the second connecting rod 620 may be hinged to the positions near the top ends of the two support members 510, respectively.

[0079] This structure can limit the second connecting rod 620 through the two supporting members 510, thereby preventing the second connecting rod 620 from moving in a direction parallel to its own rotation axis, thereby ensuring that the staff can reliably shake the handle 600.

[0080] like Figure 3 and Fig. 9 As shown, the hand-cranked water pump further includes a first locking member 810 and a second locking member 820. The first locking member 810 passes through the second connecting rod 620 and the two supporting members 510, and the second locking member 820 is mounted on the first locking member 810. The two supporting members 510 are located between the head of the first locking member 810 and the second locking member 820.

[0081] Schematically, a bolt can be used as the first locking member 810, and a nut can be used as the second locking member 820. Each support member 510 and the second connecting rod 620 are provided with a hole for the first locking member 810 to pass through. After the first locking member 810 passes through one support member 510, the second connecting rod 620 and another support member 510 in sequence, the second locking member 820 is installed on the first locking member 810. The first locking member 810 can also act as a rotating shaft, that is, the second connecting rod 620 can rotate around the axis of the first locking member 810.

[0082] In this structure, the first locking member 810 can limit the second connecting rod 620 to prevent the second connecting rod 620 from moving in a direction perpendicular to its own rotation axis, and the first locking member 810 can also serve as a rotating shaft. By installing the second locking member 820 on the first locking member 810, the first locking member 810 can be prevented from coming off the support member 510 and the second connecting rod 620.

[0083] In one embodiment, Figure 1-Figure 7As shown, the base 100 is provided with a plurality of first support rods 110, and the bottom of the barrel 500 is provided with a flange 520. The top end of each first support rod 110 passes through the flange 520 and is fixedly connected to the flange 520.

[0084] Schematically, the barrel 500 includes a bottom plate and a side panel mounted on the bottom plate, and the bottom plate and the side panel can be fixed by welding. The edge of the bottom plate exceeds the side panel to form a flange 520, and the flange 520 can extend in the horizontal direction. Among them, the width of the flange 520 is non-restrictive, and those skilled in the art can set it as needed. Exemplarily, the number of the first support rods 110 can be four, and the four first support rods 110 are respectively located at the four corners of the base 100. When each first support rod 110 is fixedly connected to the flange 520, the four first support rods 110 are also located at the four corners of the barrel 500.

[0085] In this embodiment, the base 100 can also support the barrel 500 through the first support rod 110, so that the cylinder body 200 below the barrel 500 is not easily squeezed and damaged, which is beneficial to improving the service life of the hand-cranked water pump.

[0086] In a specific embodiment, Figure 1-Figure 7 As shown, two fixing members 111 are installed at the top end of each first support rod 110 , and the flange 520 is clamped between the two fixing members 111 .

[0087] Schematically, a threaded section is provided at the top of the barrel 500, and a nut can be used as a fixing member 111. Two nuts are respectively sleeved on the threaded section and threadedly connected with the threaded section. The height of the fixing member 111 on the first support rod 110 can be adjusted by rotating the fixing member 111. During the assembly process of the barrel 500, a fixing member 111 can be first installed on the first support rod 110, and the top of the first support rod 110 is passed through the flange 520 of the barrel 500. At this time, the fixing member 111 on the first support rod 110 is against the bottom surface of the flange 520, and another fixing member 111 is installed on the first support rod 110, and the position of the fixing member 111 is adjusted so that the fixing member 111 is against the top surface of the flange 520.

[0088] In this structure, the position of the barrel 500 on the first support rod 110 can be limited by the two fixing members 111 , thereby ensuring the reliability of the connection between the barrel 500 and the base 100 .

[0089] In one possible implementation, Figure 1-Figure 7As shown, the base 100 further includes a first support plate 120, a second support plate 130 and a plurality of second support rods 140. The second support plate 130 is located above the first support plate 120, and the plurality of second support rods 140 are connected between the first support plate 120 and the second support plate 130. The cylinder 200 is mounted on the second support plate 130, and the liquid inlet pipe 300 is located between the first support plate 120 and the second support plate 130.

[0090] Among them, the shapes of the first support plate 120 and the second support plate 130 can both be rectangular, the number of the second support rods 140 can be four, and the four second support rods 140 can be respectively located at the four corners of the base 100. The size of the second support plate 130 can be smaller than the size of the first support plate 120, and then each second support rod 140 can be tilted. Schematically, two holes are provided on the second support plate 130, and a hole is provided on the bottom surface of each cylinder 200, and the hole on the second support plate 130 is directly opposite to the hole position on the cylinder 200. The second end of each branch pipe 320 can be connected to the second support plate 130, and the two branch pipes 320 are respectively connected to the two holes on the second support plate 130. This embodiment does not limit the spacing height between the first support plate 120 and the second support plate 130, and those skilled in the art can set it as needed.

[0091] The above arrangement ensures that the liquid inlet pipe 300 will not be squeezed and blocked, thereby ensuring that the hand-cranked water pump can pump liquid reliably.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A hand-cranked water pump, characterized in that: include: Base; Two cylinders, the two cylinders are installed side by side on the base; A liquid inlet pipe, comprising a main pipe and two branch pipes, wherein the first ends of the two branch pipes are respectively connected to the main pipe, and the second ends of the two branch pipes are respectively connected to the two cylinders; Two piston assemblies, one end of each of the two piston assemblies extends into the interior of the two cylinders respectively, and the piston assemblies are slidably connected to the corresponding cylinders; A barrel, mounted on the two barrels and respectively connected to the two barrels; A crank, wherein the first end of the crank is hingedly mounted on the barrel, and the two sides of the first end of the crank are respectively connected to the other ends of the two piston assemblies; A liquid outlet pipe has one end connected to the barrel.

2. The hand-operated water pump according to claim 1, characterized in that: The crank handle includes a first connecting rod and a second connecting rod, one end of the first connecting rod is fixedly connected to the middle of the second connecting rod, the second connecting rod is hingedly mounted on the barrel, and both ends of the second connecting rod are respectively connected to the second ends of the two piston assemblies.

3. The hand-operated water pump according to claim 2, characterized in that: The crank also includes two reinforcing rods, the extension direction of the reinforcing rods is inclined to the extension direction of the first connecting rod, one end of the two reinforcing rods is respectively connected to the two ends of the second connecting rod, and the other ends of the two reinforcing rods are respectively connected to the first connecting rod.

4. The hand-operated water pump according to claim 2, characterized in that: The piston assembly includes a piston and a connecting piece, wherein the piston is arranged at one end of the connecting piece, the piston extends into the interior of the cylinder and is slidably connected to the cylinder, a hook-shaped portion is arranged at one end of the connecting piece away from the piston, a hanging hole is arranged at the end of the second connecting rod, and the hook-shaped portion is hung on the hanging hole.

5. The hand-operated water pump according to claim 4, characterized in that: A sealing ring is sleeved on the side surface of the piston.

6. The hand-operated water pump according to claim 2, characterized in that: Two support members are arranged at intervals inside the barrel, the middle part of the second connecting rod is located between the two support members, and the second connecting rod is hinged to the two support members respectively.

7. The hand-operated water pump according to claim 6, characterized in that: The hand-cranked water pump also includes a first locking member and a second locking member, the first locking member passes through the second connecting rod and the two supporting members, the second locking member is installed on the first locking member, and the two supporting members are located between the head of the first locking member and the second locking member.

8. The hand-operated water pump according to any one of claims 1 to 7, characterized in that: The base is provided with a plurality of first support rods, the bottom of the barrel is provided with a flange, and the top end of each of the first support rods passes through the flange and is fixedly connected to the flange.

9. The hand-operated water pump according to claim 8, characterized in that: Two fixing members are installed on the top end of each of the first support rods, and the flange is clamped between the two fixing members.

10. The hand-operated water pump according to claim 8, characterized in that: The base also includes a first support plate, a second support plate and a plurality of second support rods, the second support plate is located above the first support plate, the plurality of second support rods are connected between the first support plate and the second support plate, the cylinder is mounted on the second support plate, and the liquid inlet pipe is located between the first support plate and the second support plate.

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