Pressureless differential plunger pump and dispenser

Abstract

The application provides a kind of pressureless plunger pump and glue dispenser in the technical field of plunger pump, including piston and plunger cylinder, piston is arranged in plunger cylinder, and one end of piston is connected with upper piston rod, the other end of piston is connected with lower piston rod, upper piston rod and lower piston rod are arranged to be same size.Glue in pressureless plunger pump is continuously output from glue outlet one and glue outlet two through the up-down movement of upper piston rod, piston and lower piston rod together.The application adopts upper piston rod and lower piston rod with same size design, so that the pressure area of upper and lower cavities of plunger pump is equal, and the effect of no pressure difference of output glue is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plunger pump, in particular to a differential pressure-free plunger pump and a glue dispenser. BACKGROUND

[0002] The existing plunger pump on the glue dispenser on the market will produce a large pressure difference fluctuation in the up-down movement process, which will affect the output glue effect and cause inconvenience to the dispensing work of the glue dispenser. SUMMARY

[0003] In view of the defects in the prior art, the purpose of the present application is to provide a differential pressure-free plunger pump and a glue dispenser.

[0004] According to the differential pressure-free plunger pump provided by the present application, the plunger and the plunger cylinder are provided, the plunger is arranged in the plunger cylinder, one end of the plunger is connected with an upper plunger rod, the other end of the plunger is connected with a lower plunger rod, and the upper plunger rod and the lower plunger rod are arranged to be the same size.

[0005] Through the up-down movement of the upper plunger rod, the plunger and the lower plunger rod, the glue in the differential pressure-free plunger pump is continuously output from the glue outlet one and the glue outlet two.

[0006] In some embodiments, the differential pressure plunger pump is provided with a cavity one and a cavity two at one end inside, and the cavity one is arranged axially in the differential pressure plunger pump, and the cavity two is arranged radially in the differential pressure plunger pump.

[0007] In some embodiments, the differential pressure plunger pump is further provided with a lower fixed pressing sheet and a lower movable pressing sheet at one end outside, and the lower fixed pressing sheet and the lower movable pressing sheet are arranged at intervals.

[0008] In some embodiments, the differential pressure plunger pump is further provided with an upper movable pressing sheet at one end inside, and the upper movable pressing sheet is arranged opposite to the other side of the lower fixed pressing sheet and the lower movable pressing sheet.

[0009] In some embodiments, the differential pressure-free plunger pump is further provided with a check ball, and the check ball is connected to the plunger.

[0010] In some embodiments, the differential pressure-free plunger pump is further provided with a glue outlet one and a glue outlet two, the glue outlet one is arranged on one side of the upper cavity of the differential pressure-free plunger pump, and the glue outlet two is arranged on one side of the lower cavity of the differential pressure-free plunger pump.

[0011] In some embodiments, when the upper plunger rod, the plunger and the lower plunger rod move downward together, the pressure of the glue makes the upper movable pressing sheet be tightly arranged, and the glue in the lower cavity is output from the glue outlet two.

[0012] Meanwhile, the lower fixed pressing plate and the lower movable pressing plate are arranged separately, the check ball is arranged in an open state, the glue in the cavity one flows into the upper cavity through the glue channel, and the glue in the cavity one fills the cavity two when flowing.

[0013] In some embodiments, when the upper piston rod, the piston and the lower piston rod move upward together, the pressure generated by the glue makes the lower fixed pressing plate and the lower movable pressing plate press each other.

[0014] Meanwhile, the check ball is arranged in a closed state, the upper movable pressing plate is arranged in an open state, the glue in the cavity two flows into the lower cavity, and the glue in the upper cavity is output from the glue outlet one.

[0015] A glue dispensing machine comprising the above pressureless piston pump.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] 1. The upper piston rod and the lower piston rod of the same size are adopted, so that the upper and lower cavities of the piston pump have equal pressure areas, and the output pressure of the glue is without pressure difference.

[0018] 2. The glue outlet is arranged at the upper and lower cavities of the piston pump, so that the glue in the upper and lower cavities of the piston pump can be stably output, and the effect of continuous and uninterrupted glue supply is achieved.

[0019] 3. Two cavities are arranged in the piston pump for glue feeding, so that the glue can be stably fed into the upper and lower cavities of the piston pump, the effect of continuous and uninterrupted glue feeding is achieved, and the problem of glue feeding interference is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0020] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments with reference to the attached drawings:

[0021] Fig. 1 It is an internal cross-sectional structure diagram of the pressureless piston pump of the present application.

[0022] Fig. 2 It is an overall structure diagram of the appearance of the pressureless piston pump of the present application.

[0023] REFERENCE NUMERALS:

[0024] Upper piston rod 1 Cavity one 9

[0025] Piston 2 Glue outlet one 10

[0026] Lower piston rod 3 Cavity two 11

[0027] Lower fixed pressing plate 4 glue outlet 2 12

[0028] Lower movable pressing plate 5 Upper cavity 13

[0029] Upper movable pressing plate 6 Lower cavity 14

[0030] Check ball 7 channel 15

[0031] Plunger cylinder 8 DETAILED DESCRIPTION

[0032] The present invention will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, without departing from the scope of the present invention, a number of variations and improvements may be made by those skilled in the art. These all fall within the scope of protection of the present invention.

[0033] Example 1

[0034] like Figs. 1-2 As shown, the present invention comprises a zero-pressure differential plunger pump comprising a piston 2 and a plunger cylinder 8. The piston 2 is disposed within the plunger cylinder 8, with one end of the piston 2 connected to an upper piston rod 1 and the other end of the piston 2 connected to a lower piston rod 3. The upper and lower piston rods 1 and 3 are configured to be the same size. Through the upward and downward motion of the upper, piston 2, and lower piston rods 3, the glue in the zero-pressure differential plunger pump is continuously discharged from the first and second glue outlets 10 and 12.

[0035] A cavity 1 9 and a cavity 2 11 are provided at one end of the pressure differential plunger pump, and cavity 1 9 is axially provided in the pressure differential plunger pump, and cavity 2 11 is radially provided in the pressure differential plunger pump. A lower fixed pressure plate 4 and a lower movable pressure plate 5 are also provided at one end of the outside of the pressure differential plunger pump, and the lower fixed pressure plate 4 and the lower movable pressure plate 5 are spaced apart. An upper movable pressure plate 6 is also provided at one end of the pressure differential plunger pump, and the upper movable pressure plate 6 is relatively provided on the other side of the lower fixed pressure plate 4 and the lower movable pressure plate 5. A check ball 7 is also provided inside the non-pressure differential plunger pump, and the check ball 7 is connected to the piston 2. A glue outlet 1 10 and a glue outlet 2 12 are also provided on the non-pressure differential plunger pump, and the glue outlet 10 is provided on one side of the upper cavity 13 of the non-pressure differential plunger pump, and the glue outlet 2 12 is provided on one side of the lower cavity 14 of the non-pressure differential plunger pump.

[0036] Example 2

[0037] A glue dispensing machine includes the zero-pressure differential plunger pump of the above-mentioned embodiment 1.

[0038] How it works

[0039] The present application makes the upper piston rod 1, the piston 2 and the lower piston rod 3 jointly circulate and move up and down, so that the glue in the differential pressure-free plunger pump is continuously output from the glue outlet one 10 and the glue outlet two 12.

[0040] When the upper piston rod 1, the piston 2 and the lower piston rod 3 jointly move downward, the pressure generated by the glue makes the upper movable pressing plate 6 be tightly arranged, the glue in the lower cavity 14 is output from the glue outlet two 12; at the same time, the lower fixed pressing plate 4 and the lower movable pressing plate 5 are arranged separately, the check ball 7 is opened, the glue in the cavity one 9 flows into the upper cavity 13 through the channel 15, and the glue in the cavity one 9 fills the cavity two 11 when flowing.

[0041] When the upper piston rod 1, the piston 2 and the lower piston rod 3 jointly move upward, the pressure generated by the glue makes the lower fixed pressing plate 4 and the lower movable pressing plate 5 be tightly arranged; at the same time, the check ball 7 is closed, the upper movable pressing plate 6 is opened, the glue in the cavity two 11 flows into the lower cavity 14, and the glue in the upper cavity 13 is output from the glue outlet one 10.

[0042] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in 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 device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0043] The specific embodiments of the present application are described above. It should be understood that the present application is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essential content of the present application. The embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other without conflict.

Claims

1. A differential pressure free piston pump characterized by, Including piston (2) and plunger cylinder (8), the piston (2) is arranged in the plunger cylinder (8), and one end of the piston (2) is connected with upper piston rod (1), the other end of the piston (2) is connected with lower piston rod (3), the upper piston rod (1) and the lower piston rod (3) are arranged to be the same size; Through the upper piston rod (1), the piston (2) and the lower piston rod (3) are cyclically moved up and down, the glue in the differential pressure plunger pump is continuously output from glue outlet one (10) and glue outlet two (12); The differential pressure plunger pump is internally provided with cavity one (9) and cavity two (11), and the cavity one (9) is arranged axially in the differential pressure plunger pump, and the cavity two (11) is arranged radially in the differential pressure plunger pump; The differential pressure plunger pump is externally provided with lower fixed pressing plate (4) and lower movable pressing plate (5), and the lower fixed pressing plate (4) and the lower movable pressing plate (5) are arranged with a spacing therebetween; The differential pressure plunger pump is internally further provided with upper movable pressing plate (6), and the upper movable pressing plate (6) is oppositely arranged on the other side of the lower fixed pressing plate (4) and the lower movable pressing plate (5); The differential pressure plunger pump is internally further provided with check ball (7), and the check ball (7) is connected to the piston (2); The differential pressure plunger pump is externally further provided with glue outlet one (10) and glue outlet two (12), the glue outlet one (10) is arranged on one side of the upper cavity (13) of the differential pressure plunger pump, and the glue outlet two (12) is arranged on one side of the lower cavity (14) of the differential pressure plunger pump; When the upper piston rod (1), the piston (2) and the lower piston rod (3) move downward together, the pressure generated by the glue makes the upper movable pressing plate (6) be arranged tightly, and the glue in the lower cavity (14) is output from the glue outlet two (12); At the same time, the lower fixed pressing plate (4) and the lower movable pressing plate (5) are arranged separately, the check ball (7) is arranged to be open, the glue in the cavity one (9) flows into the upper cavity (13) through the channel (15), and the glue in the cavity one (9) fills the cavity two (11) when flowing; When the upper piston rod (1), the piston (2) and the lower piston rod (3) move upward together, the pressure generated by the glue makes the lower fixed pressing plate (4) and the lower movable pressing plate (5) be arranged tightly with each other; At the same time, the check ball (7) is arranged to be closed, the upper movable pressing plate (6) is arranged to be open, the glue in the cavity two (11) flows into the lower cavity (14), and the glue in the upper cavity (13) is output from the glue outlet one (10).

2. A glue dispenser, characterized in that, The differential pressure plunger pump of claim 1.

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