Plunger pump used in spraying machine

Abstract

The plunger pump comprises a shell, a piston arranged in the shell and a plunger pump assembly driven by the piston, a through opening is formed in the bottom of the shell, the end portion of the plunger pump assembly is inserted into the through opening, the end portion of the plunger pump assembly is sleeved with a locking sleeve, and the plunger pump assembly is arranged in the locking sleeve. The locking sleeve is provided with two convex lugs, and the convex lugs are connected with the bottom of the shell. The plunger pump assembly is fixed to the through opening of the shell through the locking sleeve, the plunger pump assembly can be effectively prevented from loosening in the reciprocating drawing process, the stability of the plunger pump assembly is improved, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a spraying machine assembly, especially a plunger pump for spraying machine. BACKGROUND

[0002] The prior art spraying machine is a device for high-pressure spraying, and its core component is a plunger pump. The plunger pump reciprocates under the drive of a piston. For example, a spraying machine reciprocating plunger pump capable of being rapidly disassembled is disclosed in Chinese Patent No. 201821024038.2, published on January 18, 2019. The plunger pump assembly is fixed by a quick disassembly mechanism. When the plunger pump assembly works for a long time, the quick disassembly mechanism is prone to loosening, which causes the plunger pump assembly to loosen, affects the work of the plunger pump assembly, and shortens the service life of the plunger pump assembly. SUMMARY

[0003] The utility model provides a plunger pump for spraying machine which is firm in connection and long in service life.

[0004] According to the utility model provides a kind of plunger pump for spraying machine, including shell, the piston being arranged in the shell and the plunger pump assembly being driven by the piston, the bottom of the shell is shaped with through port, the end of the plunger pump assembly is inserted into the through port, the end of the plunger pump assembly is sleeved with a locking sleeve, the locking sleeve has two lugs, the lug is connected with the bottom of the shell.

[0005] According to the utility model provides a kind of plunger pump for spraying machine, it further has the following subsidiary technical features:

[0006] Further, the lug is shaped with a mounting hole, the bottom of the shell is provided with a threaded hole, the threaded hole is close to the through port, and the mounting hole corresponds to the threaded hole.

[0007] Further, it further includes a fastener, and the fastener is screwed into the threaded hole through the mounting hole.

[0008] Further comprising, the end of the plunger pump assembly is shaped with a neck, the neck is clamped at the through port.

[0009] Further comprising, a convex ring is shaped on the plunger pump assembly, the convex ring abuts against the bottom of the shell.

[0010] Further comprising, the locking sleeve abuts against the convex ring.

[0011] Compared with the prior art, the plunger pump for the spraying machine has the following advantages: the plunger pump assembly is fixed at the through port of the shell through the locking sleeve, which can effectively prevent the plunger pump assembly from loosening during reciprocating pulling, increase the stability of the plunger pump assembly, and improve the service life. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a perspective view of the utility model.

[0013] Figure 2 It is a perspective exploded view of the utility model. DETAILED DESCRIPTION

[0014] In order to clearly illustrate the scheme in the utility model, the preferred embodiments are given below and are described in detail in combination with the drawings. The following description is essentially only exemplary and is not intended to limit the application or use of the present disclosure. It should be understood that in all the drawings, corresponding reference numerals represent the same or corresponding parts and features.

[0015] As shown in Figure 1 and Figure 2 The utility model provides a kind of plunger pump for spraying machine, including shell 1, plunger and plunger pump assembly 2 driven by the plunger being arranged in the shell 1, the bottom of the shell 1 is shaped with through port 11, the end of the plunger pump assembly 2 is inserted into the through port 11, the end of the plunger pump assembly 2 is sleeved with locking sleeve 3, the locking sleeve 3 has two lugs 31, the lug 31 is connected with the bottom of the shell 1.The plunger and plunger pump assembly in the utility model all belong to relatively mature marketable product, and its specific structure and working principle are not repeated here.The main improvement of the utility model is the fixed installation of the plunger pump assembly 2, the plunger pump assembly 2 is fixedly installed at the through port 11 of the shell 1 by the locking sleeve 3, this installation mode is more firm, the plunger pump assembly 2 is not easy to loosen during reciprocating pulling movement, increase stability, improve service life.

[0016] Referring to Figure 1 and Figure 2In the above embodiment given by the utility model further includes, the lug 31 on the forming has the mounting hole 32, the bottom of the shell 1 is provided with the threaded hole 12, the threaded hole 12 is close to the through hole 11, the mounting hole 32 corresponds with the threaded hole 12. It further includes fastener 4, the fastener 4 passes through the mounting hole 32 and is screwed into the threaded hole 12. Through the above structure to the locking sleeve 3 is fixed, simple structure, and better stability, not easy to loosen.

[0017] Referring to Figure 1 and Figure 2 In the above embodiment given by the utility model further includes, the end of the plunger pump assembly 2 is shaped with a neck 21, the neck 21 is clamped at the through hole 11. The neck 21 is closely attached to the inner wall of the through hole 11, with limiting effect, prevent deviation.

[0018] Referring to Figure 1 and Figure 2 In the above embodiment given by the utility model further includes, the plunger pump assembly 2 is shaped with a convex ring 22, the convex ring 22 is abutted on the bottom of the shell 1. The locking sleeve 3 is pressed against the convex ring 22, the convex ring 22 is pressed in the bottom of the shell 1, so as to complete the fixed installation. This pressing structure, the plunger pump assembly 2 is connected more firmly, not easy to loosen, improve the service life.

[0019] In summary, the above-mentioned content is only the embodiment of the utility model, only for the principle of the utility model for explanation, and is not used to limit the protection scope of the utility model. Any modification, equivalent replacement, improvement etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A plunger pump for use in a spray machine, comprising a housing, a piston disposed in the housing, and a plunger pump assembly driven by the piston, a bottom of the housing being shaped with a through opening into which an end of the plunger pump assembly is inserted, characterized in that: The end of the plunger pump assembly is sleeved with a locking sleeve, which has two lugs connected with the bottom of the shell.

2. A piston pump for use in an applicator as defined in claim 1, characterized in that: Mounting holes are formed on the lugs, and the bottom of the shell is provided with threaded holes close to the through opening, which correspond to the mounting holes.

3. A piston pump for use in an applicator as defined in claim 2, characterized in that: Fasteners are further included, which are screwed into the threaded holes through the mounting holes.

4. A piston pump for use in an applicator as defined in claim 1, characterized in that: The end of the plunger pump assembly is formed with a neck, which is clamped at the through opening.

5. A piston pump for use in an applicator as defined in claim 1, wherein: A convex ring is formed on the plunger pump assembly, which abuts against the bottom of the shell.

6. A piston pump for use in an applicator as defined in claim 5, characterized in that: The locking sleeve is pressed against the convex ring.

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