CN211715300U - Piston delivery pump for internal spraying - Google Patents

Abstract

The utility model belongs to the technical field of pipeline inner coating spraying, specifically discloses a piston delivery pump for inner spraying, which comprises a speed reducer, wherein the output end of the speed reducer is connected with a telescopic speed reducer sequentially through a driving chain wheel, a chain and a driven chain wheel, and the telescopic speed reducer is connected with a piston rod through a connector; one end of the piston rod extends into the cylinder body and is connected with the piston in the cylinder body; the front end of the cylinder body is provided with an upper cover plate, and the rear end of the cylinder body is provided with a lower cover plate; the cylinder body is provided with a first port, a second port and a third port on one side of the lower cover plate, the first port is connected with the feed inlet electromagnetic valve, the second port is connected with the discharge outlet electromagnetic valve, and the third port is connected with the overflow outlet electromagnetic valve; the input end of the feed port electromagnetic valve is connected with the pressurized charging barrel; the utility model discloses the rotational speed of speed reducer is adjusted to the accessible, the speed of the regulation ejection of compact that can be accurate, and the ejection of compact is even.

Description

Piston delivery pump for internal spraying

Technical Field

The utility model relates to a pipeline undercoating spraying technical field, more specifically relates to a piston delivery pump for interior spraying.

Background

In the process of spraying the coating in the pipeline, a spray gun extends into the pipeline for spraying, but because the length and the diameter of the pipeline are not uniform, the amount of the coating used in each spraying is different, and the conventional piston pump cannot ensure stable feeding pressure and feeding amount in the spraying process, a single-action piston pump is commonly used in the process of spraying the coating in the pipeline, and the amount of the coating conveyed in each spraying is determined by the inner diameter of the steel pipe and the thickness of the coating. In the actual operation process, because the steel pipe undercoating requires highly to the homogeneity of the spraying coating, so need the piston to spout the coating with invariable pressure and speed in the spraying process, and current piston feed pump can not the steady voltage, or because instantaneous pressure fluctuation causes the spraying inhomogeneous, directly influences the homogeneity of steel pipe undercoating spraying, produces nonconforming product easily, causes the coating extravagant, reduces production efficiency.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned drawback that exists among the prior art, the utility model aims at providing a piston delivery pump for interior spraying can provide and compare in the bigger thrust of gear pump, and then can spray the coating of high solid content.

The utility model discloses an aim at and solve its technical problem and adopt following technical scheme to realize:

a piston delivery pump for internal spraying comprises a speed reducer, wherein the output end of the speed reducer is connected with a telescopic speed reducer sequentially through a driving chain wheel, a chain and a driven chain wheel, and the telescopic speed reducer is connected with a piston rod through a connector; one end of the piston rod extends into the cylinder body and is connected with the piston in the cylinder body; the front end of the cylinder body is provided with an upper cover plate, and the rear end of the cylinder body is provided with a lower cover plate; the cylinder body is provided with a first port, a second port and a third port on one side of the lower cover plate, the first port is connected with the feed inlet electromagnetic valve, the second port is connected with the discharge outlet electromagnetic valve, and the third port is connected with the overflow outlet electromagnetic valve; wherein, the input end of the feed inlet electromagnetic valve is connected with the pressurized charging barrel.

Preferably, the feed port electromagnetic valve and the discharge port electromagnetic valve are respectively fixed at the lower end of the lower cover plate, and the overflow port electromagnetic valve is fixed at the upper end of the lower cover plate.

Preferably, the cylinder body is connected with the lower cover plate through a bolt.

Preferably, the cylinder body is connected with the upper cover plate through a bolt.

Preferably, the driven sprocket is fixed at the upper end of the telescopic speed reducer, the driving sprocket is fixed at the lower end of the speed reducer, and the driving sprocket and the driven sprocket are linked through a chain.

The utility model discloses interior for spraying piston delivery pump has following advantage: the discharge speed can be accurately adjusted by adjusting the rotating speed of the speed reducer, the discharge is uniform, air can be completely prevented from entering the cylinder body through the overflow valve outlet and the pressurized charging barrel, and the condition of material interruption in spraying can be completely avoided; the thrust which is higher than that of a gear pump can be provided, and then the high-solid-content coating can be sprayed (the solid content of the coating can reach 100%); additionally, the utility model provides a wearing parts only is piston seal circle, and it is lower to change convenience and price.

Drawings

Fig. 1 is a schematic structural view of a piston delivery pump for internal spraying according to an embodiment of the present invention;

in the figure: 1. a feed port electromagnetic valve; 2. a discharge port electromagnetic valve; 3. an overflow port solenoid valve; 4. a lower cover plate; 5. a cylinder body; 6. a piston; 7. a piston rod; 8. an upper cover plate; 9. a connector 9; 10. a telescopic speed reducer; 11. a driven sprocket; 12. a chain; 13. a drive sprocket; 14. a speed reducer; 15. a pressurized cartridge.

Detailed Description

To further illustrate the technical means and effects of the present invention for achieving the objects of the present invention, the following detailed description will be given with reference to the accompanying drawings and preferred embodiments of the piston transfer pump for internal spraying according to the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, the piston conveying pump for internal spraying comprises a speed reducer 14, wherein the output end of the speed reducer 14 is connected with a telescopic speed reducer 10 through a driving sprocket 13, a chain 12 and a driven sprocket 11 in sequence, and the telescopic speed reducer 10 is connected with a piston rod 7 through a connector 9; one end of the piston rod 7 extends into the cylinder 5 and is connected with the piston 6 in the cylinder 5; the front end of the cylinder body 5 is provided with an upper cover plate 8, and the rear end is provided with a lower cover plate 4; a first port, a second port and a third port are arranged on one side of the lower cover plate 4 of the cylinder body 5, the first port is connected with the feed inlet electromagnetic valve 1, the second port is connected with the discharge outlet electromagnetic valve 2, and the third port is connected with the overflow outlet electromagnetic valve 3; wherein, the input end of the feed inlet electromagnetic valve 1 is connected with a pressurized charging barrel 15.

In this embodiment, the feed port electromagnetic valve 1 and the discharge port electromagnetic valve 2 are respectively fixed at the lower end of the lower cover plate 4, and the overflow port electromagnetic valve 3 is fixed at the upper end of the lower cover plate 4.

In the present embodiment, the cylinder 5 and the lower cover plate 4 are connected by bolts.

In the present embodiment, the cylinder block 5 and the upper cover plate 8 are connected by bolts.

In this embodiment, the driven sprocket 11 is fixed to the upper end of the telescopic speed reducer 10, the driving sprocket 13 is fixed to the lower end of the speed reducer 14, and the driving sprocket 13 and the driven sprocket 11 are linked by a chain 12.

In the present embodiment, the reduction gear 14 is of a model WBE-WD, manufactured by shanghai double mega transmission equipment ltd;

the type of the telescopic speed reducer 10 is QWL10/15, and is produced by Hangzhou Yushen speed reducer company Limited; the inlet port solenoid valve 1, the outlet port solenoid valve 2 and the overflow port solenoid valve 3 are RVZHJV941F-16PG, manufactured by shanghai jianlang science and technology ltd.

The utility model discloses theory of operation and use flow: the speed reducer 14 rotates reversely, the driving sprocket 13, the chain 12 and the driven sprocket 11 provide power for the telescopic speed reducer 10 to drive the piston 6 to move towards the left end of the cylinder body 5, the feed inlet electromagnetic valve 1 is opened, the discharge outlet electromagnetic valve 2 is closed, the overflow outlet electromagnetic valve 3 is closed, the coating enters the cylinder body 5 through the pressure of the pressurization type charging barrel 15 and the suction force of the piston 6, when the piston 6 reaches the maximum position, the speed reducer 14 stops, the piston 6 stops moving, the overflow port electromagnetic valve 3 is opened, the coating enters the piston 6 by the pressure of the pressurization type charging barrel 15, when the cylinder body 5 is completely filled with the coating, the coating can overflow from the overflow port, the overflow port electromagnetic valve 3 is closed at the moment, the feed port electromagnetic valve 1 is closed, the discharge port electromagnetic valve 2 is opened, the spraying process is started, the speed reducer 14 rotates forwards to enable the piston 6 to move rightwards, and the coating is discharged from the discharge port electromagnetic valve 2.

The utility model discloses the rotational speed of speed reducer is adjusted to the accessible, the speed of the regulation ejection of compact that can be accurate, and the ejection of compact is even, can avoid getting into the air in the cylinder body completely through overflow valve export and pressurization formula feed cylinder, and the condition of spraying interrupted material will not appear completely. The utility model can provide much larger thrust compared with a gear pump, and further can spray coating with high solid content (the solid content of the coating can reach 100%); additionally, the utility model provides a wearing parts only is piston seal circle, and it is lower to change convenience and price.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of 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, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent embodiments without departing from the scope of the present invention, but all the technical matters of the present invention are within the scope of the present invention.

Claims (5)

1. The piston delivery pump for internal spraying is characterized by comprising a speed reducer (14), wherein the output end of the speed reducer (14) is connected with a telescopic speed reducer (10) sequentially through a driving chain wheel (13), a chain (12) and a driven chain wheel (11), and the telescopic speed reducer (10) is connected with a piston rod (7) through a connector (9); one end of the piston rod (7) extends into the cylinder body (5) and is connected with the piston (6) in the cylinder body (5); the front end of the cylinder body (5) is provided with an upper cover plate (8), and the rear end is provided with a lower cover plate (4); the cylinder body (5) is provided with a first port, a second port and a third port on one side of the lower cover plate (4), the first port is connected with the feed inlet electromagnetic valve (1), the second port is connected with the discharge outlet electromagnetic valve (2), and the third port is connected with the overflow outlet electromagnetic valve (3); wherein, the input end of the feed inlet electromagnetic valve (1) is connected with the pressurized charging barrel (15).

2. The piston delivery pump for internal spraying according to claim 1, wherein the feed port solenoid valve (1) and the discharge port solenoid valve (2) are respectively fixed at the lower end of the lower cover plate (4), and the overflow port solenoid valve (3) is fixed at the upper end of the lower cover plate (4).

3. Piston-transfer pump for internal spraying according to claim 1, characterised in that the cylinder (5) is bolted to the lower cover plate (4).

4. Piston-transfer pump for internal spraying according to claim 1, characterised in that the cylinder (5) is bolted to the upper cover plate (8).

5. The piston feed pump for internal spraying according to claim 1, wherein the driven sprocket (11) is fixed to an upper end of the telescopic speed reducer (10), the driving sprocket (13) is fixed to a lower end of the speed reducer (14), and the driving sprocket (13) and the driven sprocket (11) are linked by a chain (12).

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