CN211819821U

CN211819821U - Hand pump

Info

Publication number: CN211819821U
Application number: CN202020178067.5U
Authority: CN
Inventors: 李玉洁; 张红; 涂爱斌; 张明亮
Original assignee: Greenman Machinery Co
Current assignee: Greenman Machinery Co
Priority date: 2020-02-17
Filing date: 2020-02-17
Publication date: 2020-10-30
Anticipated expiration: 2030-02-17

Abstract

A manual pump comprises a one-way liquid inlet valve, a one-way liquid outlet valve, a three-way pipe, an organic glass pipe, a piston and a piston rod, first sleeve, the second sleeve, the third sleeve, spring and rocker component, the piston is located in the organic glass, first sleeve cup joints in the organic glass pipe outside, the one end of organic glass pipe is through one-way feed liquor valve of three-way pipe intercommunication and one-way liquid outlet valve, the second sleeve includes big footpath section and path section, the nut is passed through with organic glass pipe and first sleeve fastening together to first telescopic one end, the other end and big footpath section spiro union, third sleeve and path section spiro union, the third sleeve is equipped with first guide and second guide, the piston rod is connected with the piston, the piston rod includes first pole portion, second pole portion and rank portion, the spring cup joints on second pole portion, the first guide of one end top, the other end top rank portion, rocker component connection first pole portion. The utility model discloses corrosion resistance is strong, need not to lubricate, can be according to different tree species or the nimble single injection volume of adjusting of liquid medicine.

Description

Hand pump

Technical Field

The utility model relates to a fluid pump technical field, concretely relates to hand pump.

Background

The manual pump is a device for conveying liquid or pressurizing liquid through manual force application, does not need electric drive, and is convenient and safe to use. Most of working media of the existing manual pump are hydraulic oil, most of materials of a pump body are cast iron, and the corrosion resistance of the pump body is poor. In the forestry injection operation, some liquid medicine is corrosive and different dosage is injected according to different requirements of tree symptoms,

therefore, there is a need in the art for a new manual pump that solves the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hand pump, its corrosion resistance is strong, need not the lubrication, can adjust single injection volume according to different tree species or liquid medicine are nimble.

In order to realize the aim, the manual pump provided by the utility model comprises a one-way liquid inlet valve, a one-way liquid outlet valve, a three-way pipe, an organic glass pipe, a piston rod, a first sleeve, a second sleeve, a third sleeve, a spring and a rocker component,

the piston is arranged in the organic glass, the first sleeve is sleeved outside the organic glass pipe, one end of the organic glass pipe is communicated with the one-way liquid inlet valve and the one-way liquid outlet valve through the three-way pipe, external threads are arranged at two ends of the first sleeve, the second sleeve comprises a large-diameter section and a small-diameter section, internal threads are arranged on the large-diameter section and the small-diameter section, the organic glass pipe and the first sleeve are fastened together through a nut at one end of the first sleeve close to the three-way pipe, and the other end of the first sleeve is in threaded connection with the internal threads of the large-diameter section of the second sleeve,

the third sleeve is provided with an external thread, the external thread of the third sleeve is in threaded connection with the internal thread of the small-diameter section of the second sleeve, so that the third sleeve can be screwed in or out along the inner side of the second sleeve, one end of the third sleeve, which extends into the second sleeve, is provided with a first guide part, the other end of the third sleeve is provided with a second guide part, the piston rod penetrates through the second guide part, the third sleeve, the first guide part and the second sleeve and then is connected with the piston,

the piston rod comprises a first rod part and a second rod part which are different in diameter, the diameter of the first rod part is larger than that of the second rod part, a step part is formed between the first rod part and the second rod part, the spring is sleeved on the second rod part, one end of the spring abuts against the first guide part, the other end of the spring abuts against the step part, and the rocker member is connected with the first rod part and used for driving the piston rod to further drive the piston to reciprocate in the organic glass tube.

In an embodiment, the second guide has an inner diameter slightly larger than the diameter of the first shaft part, such that the second guide provides directional guidance for the first shaft part, and the first guide has an inner diameter slightly larger than the diameter of the second shaft part, such that the first guide provides directional guidance for the second shaft part.

In one embodiment, the rocker member includes a pressing rod, a shaft seat, a first connecting rod and a second connecting rod, the first connecting rod is rotatably connected to the shaft seat, the first connecting rod is L-shaped, one end of the first connecting rod is fixedly connected to the pressing rod, the other end of the first connecting rod is hinged to one end of the second connecting rod, and the other end of the second connecting rod is hinged to the first rod.

In one embodiment, the outer peripheral wall of the piston is provided with a plurality of annular grooves, and each groove is clamped with an O-shaped gasket.

In one embodiment, the end of the second rod part has a three-degree-of-freedom ball hinge, and the ball hinge extends into the piston so that the piston rod is connected with the piston.

In one embodiment, the first guide part is integrally conical, and a clamp spring is arranged at the conical top end of the first guide part.

In one embodiment, both ends of the first sleeve are provided with rubber gaskets.

In one embodiment, the second sleeve is mounted on a fixed mount.

In one embodiment, the manual pump further comprises a mounting plate for fixing the manual pump.

The utility model has the advantages that:

the utility model provides a hand pump, its corrosion resistance is strong, need not to lubricate, can be applicable to the plant protection field better according to the nimble single injection volume of adjusting of different tree species or liquid medicine, especially is used for injecting liquid medicine or nutrient solution for trees.

Drawings

Fig. 1 is a schematic view of a main structure of a hand pump according to an embodiment of the present invention.

Fig. 2 is an exploded schematic view of a hand pump according to an embodiment of the present invention.

Detailed Description

Referring to fig. 1 and 2, fig. 1 and 2 exemplarily show the main structure of a hand pump, and as shown in the drawings, the hand pump provided by the present invention may include a one-way liquid inlet valve 311, a one-way liquid outlet valve 312, a three-way pipe 321, a plexiglas pipe 322, a piston 331, a piston rod 332, a first sleeve 341, a second sleeve 342, a third sleeve 343, a spring 351, and a rocker member 361.

The piston 331 is arranged in the organic glass tube 322, the peripheral wall of the piston 331 is provided with a plurality of annular grooves 333, and an O-shaped gasket 338 is clamped in each groove 333 and forms a seal with the inner wall of the organic glass tube 322. The outer peripheral wall of the piston 331 in this embodiment is provided with two annular grooves 333. The first sleeve 341 is attached to the outside of the plexiglas tube 322. One end of the organic glass tube 322 is communicated with the one-way liquid inlet valve 311 and the one-way liquid outlet valve 312 through the three-way tube 321, the two ends of the first sleeve 341 are provided with external threads, the second sleeve 342 comprises a large-diameter section and a small-diameter section, the large-diameter section and the small-diameter section are provided with internal threads, one end of the first sleeve 341 close to the three-way tube 321 is fastened with the organic glass tube 322 and the first sleeve 341 through the nut 323, the other end of the first sleeve is screwed with the internal threads of the large-diameter section of the second sleeve 342, and the two ends of the first sleeve 341 are provided with rubber sealing. It should be noted that the tee 321 and the nut 323 may be provided independently or integrally, and the plug 313 is provided in the integrally formed structure to increase the sealing performance.

The third sleeve 343 has an external thread, the external thread of the third sleeve 343 is screwed with the internal thread of the small diameter section of the second sleeve 342, so that the third sleeve 343 can be screwed in or out along the inner side of the second sleeve 342, one end of the third sleeve 343 extending into the second sleeve 342 is provided with a first guide 344, the other end is provided with a second guide 345, and the piston rod passes through the second guide 345, the third sleeve 343, the first guide 344 and the second sleeve 342 and then is connected with the piston 331.

Piston rod 332 includes a first rod part 334 and a second rod part 335 with different diameters, and the end of second rod part 335 has a three-degree-of-freedom ball hinge 336, and ball hinge 336 extends into piston 331 so that piston rod 332 is connected to piston 331. The diameter of the first rod part 334 is larger than that of the second rod part 335, a step part 337 is formed between the first rod part 334 and the second rod part 335, the spring 351 is sleeved on the second rod part 335, one end of the spring 351 abuts against the first guide part 344, the other end abuts against the step part 337, and the rocker member 361 is connected with the first rod part 334 and used for driving the piston rod 332 to further drive the piston 331 to reciprocate in the organic glass tube 322. The inner diameter of second guide 345 is slightly larger than the diameter of first stem 344 such that second guide 345 provides directional guidance for first stem 344, and the inner diameter of first guide 345 is slightly larger than the diameter of second stem 335 such that first guide 345 provides directional guidance for second stem 335. The first guiding part 344 is generally conical, and a clamp spring 346 is arranged at the conical top end of the first guiding part 344, and the clamp spring 346 can limit the piston rod 332.

The rocker member 361 includes a pressing rod 362, an axle seat 363, a first connecting rod 364 and a second connecting rod 365, the first connecting rod 364 is rotatably connected to the axle seat 363, the first connecting rod 364 is L-shaped, one end of the first connecting rod 364 is fixedly connected to the pressing rod 362, the other end of the first connecting rod 364 is hinged to one end of the second connecting rod 365, and the other end of the second connecting rod 365 is hinged to the first rod part 335. The first connecting rod 364 is hinged on the axle seat 363 through a wear-resistant bushing and a lock nut. The pressing rod 362, the shaft seat 363, the first link 364, and the second link 365 constitute a link mechanism such that the circular motion of the first link 364 is transmitted to the linear motion of the piston rod 332. The second sleeve 342 is mounted on a fixed seat 347. The shaft seat 363 and the fixing seat 347 can be used as fixing devices of the whole manual pump. The shaft mount 363 and the fixed mount 347 may be secured to a mounting plate 314 for mounting to other equipment, such as a medicine chest or a water tank.

The user can be through the application of force to depression bar 362, it is circular motion around the axle bed to drive first connecting rod 264, transmit second connecting rod 365 through first connecting rod 364, make piston rod 332 and piston 331 do linear motion, the space in the organic glass pipe 322 of piston 331 compression, the play liquid valve 312 outflow from one-way of liquid medicine or nutrient solution, accomplish the work of pump once, at this moment, spring 351 has the trend of resumeing owing to being compressed, make piston 331, piston rod 332, depression bar component 361 resume initial position, the volume in the organic glass pipe 322 is by little grow, liquid medicine or nutrient solution flow into in organic glass pipe 322 from one-way feed liquor valve 311, prepare for injection next time.

If the single injection amount needs to be adjusted, the adjustment of the depth of the third sleeve 343 into the second sleeve 342 is achieved by adjusting the depth of the third sleeve 343 into the second sleeve 342, i.e. when the depth of the third sleeve 343 into the second sleeve 342 is adjusted, the rocker member 361, the piston rod 332, the clamp spring 346 and the piston 331 move integrally to adjust the volume in the plexiglas tube 322.

To sum up, the utility model discloses a whole exogenesis of manual pump is long and thin, and is even at fixed back weight distribution, and the non-concentration is a bit, is favorable to the user to bear, and organic glass pipe 322 corrosion resistance is strong, increases the life of whole manual pump, and it need not to lubricate, can adjust the single injection volume according to different tree species or liquid medicine are nimble, is applicable to the plant protection field better, is particularly useful for injecting liquid medicine or nutrient solution for trees.

The above description is the preferred embodiment of the present invention and the technical principle applied by the preferred embodiment, and for those skilled in the art, without departing from the spirit and scope of the present invention, any obvious changes based on the equivalent transformation, simple replacement, etc. of the technical solution of the present invention all belong to the protection scope of the present invention.

Claims

1. A manual pump is characterized by comprising a one-way liquid inlet valve, a one-way liquid outlet valve, a three-way pipe, an organic glass pipe, a piston rod, a first sleeve, a second sleeve, a third sleeve, a spring and a rocker member,

2. Manual pump according to claim 1, characterized in that the inner diameter of the second guide is slightly larger than the diameter of the first shaft part, such that the second guide provides directional guidance for the first shaft part, and the inner diameter of the first guide is slightly larger than the diameter of the second shaft part, such that the first guide provides directional guidance for the second shaft part.

3. The hand pump of claim 1, wherein the rocker member comprises a compression bar, an axle seat, a first link rotatably coupled to the axle seat, and a second link having an L-shape with one end fixedly coupled to the compression bar and the other end hingedly coupled to one end of the second link, the other end hingedly coupled to the first link.

4. A hand pump according to claim 1, wherein the outer peripheral wall of the piston is provided with a plurality of annular recesses, each of which is captured by an O-ring.

5. The hand pump of claim 1, wherein said second rod portion terminates in a three degree-of-freedom ball hinge extending into said piston to connect said piston rod to said piston.

6. The hand pump as in claim 1, wherein said first guide member is generally conical, and wherein a snap spring is provided at a conical tip of said first guide member.

7. The hand pump of claim 1, wherein said first sleeve is provided with rubber seals at both ends.

8. A hand pump according to claim 1, wherein the second sleeve is mounted on a fixed mount.

9. The hand pump according to any of claims 1 to 8, further comprising a mounting plate to which said hand pump is secured.