CN113738074B

CN113738074B - Impact type mortar mechanized spraying gun

Info

Publication number: CN113738074B
Application number: CN202111077832.XA
Authority: CN
Inventors: 李胜杰
Original assignee: Shaoxing Vocational and Technical College
Current assignee: Shaoxing Vocational and Technical College
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-12-13
Anticipated expiration: 2041-09-15
Also published as: CN113738074A

Abstract

The invention discloses a spray gun for mechanically coating impact type mortar, which comprises a spray gun body, wherein an anti-blocking actuator is arranged at an outlet of the spray gun body, a one-way valve is arranged at an inlet side of the spray gun body, and a sealing cavity is formed between the one-way valve and the anti-blocking actuator, and the spray gun is characterized in that: the multi-stage power transmission source is arranged on the spray gun body, and the bottom end of the multi-stage power transmission source is driven by the driving source to realize the suction and instant ejection of mortar; the multistage power transmission source comprises an impact piston, a first-stage piston and a second-stage piston which are sequentially and movably arranged in the spray gun body in the vertical direction. The invention carries out upward buffer driving through the arranged multistage power transmission source, has larger impact force to spray out mortar, overcomes the blockage caused by the movement (viscous force) of the mortar in a pipeline, and greatly improves the utilization rate of the mortar. And meanwhile, negative pressure is generated during the return stroke of the power source, so that the mortar can be quickly sucked for the next injection, and the working efficiency is higher.

Description

Impact type mortar mechanized spraying gun

Technical Field

The invention relates to the technical field of spray guns for mechanized coating, in particular to a spray gun for mechanized coating of impact type mortar.

Background

In recent years, with the development of urbanization and improvement of market economy in China, people pursue urban housing to increase greatly year by year. According to the issued message, statistics data of the sales price variation of 70 large and medium-sized city commodity residences in month 2 of 2018 are obtained. From the data, the second and third line cities of China maintain small amplitude fluctuation, wherein the same ratio fluctuation of the newly built commercial houses is 0.4% larger than that of the new commercial houses in the first month, and the same ratio fluctuation of the third line cities is 0.4% larger than that of the new commercial houses in the first month. The concordant fluctuation of Shenyang, kunming and North sea can reach more than 10%. With the aging of urban population and the reduction of workers, urban construction cost is correspondingly improved, so that the research and development of mechanized mortar spray guns are of great significance.

At present, the mortar is mainly used by combining a stirrer, a grouting machine, a suction press and the like, and is heavy and strong in construction, poor in spraying effect and low in efficiency. In order to improve the mechanical spraying operation of the mortar, a method for spraying the mortar out by using the impact action is researched and designed to improve the engineering quality and the working efficiency.

In order to solve the problems, the scheme is developed accordingly.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a spray gun for mechanically coating impact type mortar, which solves the problems in the background art.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a mechanized spray gun of using of scribbling of impact type mortar, includes the spray gun body, and spray gun body export is installed and is prevented blockking up and is touched the ware, and the entry side is equipped with a check valve, and the check valve with prevent blockking up and form sealed chamber, its characterized in that between touching the ware: the multi-stage power transmission source is arranged on the spray gun body, and the bottom end of the multi-stage power transmission source is driven by the driving source to realize the suction and instant ejection of mortar; the multistage power transmission source comprises an impact piston, a first-stage piston and a second-stage piston, which are respectively and sequentially movably arranged in the spray gun body in the vertical direction and are sequentially connected with a thrust spring, an expansion spring and an expansion spring to be used as partial drive of a return stroke.

Preferably, the impact piston is located in the spray gun body, the first-stage piston and the second-stage piston are respectively arranged in a shell with an external corresponding position, and the shell is fixedly connected with the spray gun body and the shell through bolts.

Preferably, the driving source comprises a motor, an output end guide rod of the motor, and a power piston connected to the upper end of the guide rod and driven by the motor to reciprocate up and down.

Preferably, a rubber ring is installed at each piston.

Preferably, a closed cavity is formed in the second stage piston in a sealed environment, and a striker is mounted in the closed cavity and extends downward to the outside of the second stage piston.

(III) advantageous effects

After adopting the technical scheme, compared with the prior art, the invention has the following advantages: according to the impact type spray gun for mechanical mortar coating, the multistage power transmission source is arranged to drive the spray gun to buffer upwards, and the mortar is sprayed out by a larger impact force, so that the blockage caused by the movement (viscous force) of the mortar in a pipeline is overcome, and the utilization rate of the mortar is greatly improved. And meanwhile, negative pressure is generated during the return stroke of the power source, so that the mortar can be quickly sucked for the next injection, and the working efficiency is higher. The multistage power transmission sources can be flexibly matched to achieve the effect that mortar is discharged under different air pressures, so that the multistage power transmission system is suitable for different environmental occasions.

Drawings

FIG. 1 is a schematic side view of a spray gun for mechanically applying an impact mortar.

FIG. 2 is a schematic view of a spray structure of a spray gun for mechanical mortar impact coating.

FIG. 3 is a force diagram of the force system of the spray gun.

Fig. 4 is a graphical representation of a system frequency response function.

In the figure: the anti-blocking trigger comprises an anti-blocking trigger 1, an impact piston 2, a pushing piston 3, a thrust spring 4, a first-stage piston 5, an expansion spring 6, a second-stage piston 7, a power piston 8, a motor 9, a guide rod 10, a bolt 11, a firing pin 12, a return spring 13, a one-way valve 14, a spray gun body 15, a sealing cavity a1 and an inner cavity a2.

Detailed Description

The invention is explained in more detail below with reference to the figures and examples.

As shown in fig. 1-4: the utility model provides a mechanized spray gun of using of scribbling of impact type mortar, includes spray gun body 15, and spray gun body 15 export is installed and is prevented blockking up touch-sensitive organ 1, prevents blockking up touch-sensitive organ 1 and check valve 14, forms sealed chamber a1 between the impact piston 2. The impact piston 2 is connected with the pushing piston 3 through a bolt, and a thrust spring 4 is installed on the pushing piston 3.

The first-stage piston 5 and the second-stage piston 7 are arranged in the spray gun body 15, the first-stage piston 5 and the second-stage piston 7 are provided with the expansion spring 6, and the second-stage piston 7 is internally provided with the firing pin 12; a guide rod 10 is arranged in the power piston 8, and the power piston 8 moves up and down under the driving of a motor 9; each piston is provided with a rubber ring, and the spray gun body 15 is connected with the shell through a bolt 11.

As shown in fig. 1, the multistage power transmission source (buffer structure) mainly includes a first-stage piston 5, a second-stage piston 7, a striker 12, an expansion spring 6, and an inner chamber a2, and the buffer structure is integrally mounted in a gun body 15.

When the impact type mechanical coating spray gun works, in the primary stage, the firing pin 12 is arranged in the second-stage piston 7 under the sealed environment to form a closed cavity a3, the motor 9 drives the power piston 8 to move upwards to collide with the firing pin 12, and air in the closed cavity a3 is compressed to form first-stage buffering; the second-stage piston 7 moves upwards under the push of the firing pin 12, and the first-stage piston 5 moves in a mode shown in fig. 4 under the action of the expansion spring 6 and the inner cavity a 2;

when power is transmitted to the pushing piston 3 to move through buffering, the impact piston 2 is driven to move upwards; when the power disappears, the pushing piston 3 moves downwards under the action of the pushing spring 4, and drives the impact piston 2 to move downwards, so that the sealing cavity a1 is opened and closed in one period.

When the impact piston 2 compresses the mortar in the sealed cavity a1, the mortar closes the one-way valve 14 and opens the anti-blocking trigger 1 to flush the mortar out of the sealed cavity a1; when the impact piston 2 expands the mortar in the sealed cavity a1, the mortar opens the one-way valve 14 and closes the anti-blocking trigger 1, and the mortar is sucked into the sealed cavity a1; therefore, the mortar can be sprayed out, and the utilization rate of the mortar is greatly improved.

Features and advantages: 1, the blockage caused by the movement (viscous force) of mortar in a pipeline is overcome; and 2, discharging the mortar (with different viscosities and sizes) by using different air pressures, so as to adapt to different environmental occasions.

According to the buffer structure, the design principle mode is as follows:

setting a buffer structure to be equivalent to a two-degree-of-freedom system subjected to an instantaneous impact force F ₀ Delta (t), the stiffness of the thrust spring 4 is k, the air damping of the sealed cavity a1 is c, and the mass of the first-stage piston is m ₁ Second stage piston mass is equivalent to m ₂ Applying newton's second law to each mass respectively yields the following differential equation of motion:

the movement of the first stage piston and the second stage piston is shown in fig. 4.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and the protection scope must be determined by the scope of the claims.

Claims

1. The utility model provides a mechanized spray gun of using of scribbling of impact type mortar, includes the spray gun body, and spray gun body (15) export is installed and is prevented blockking up and is touched and move ware (1), and the entry side is equipped with a check valve (14), forms sealed chamber (a 1) between check valve (14) and the prevent blockking up and touch and move ware (1), its characterized in that: the multi-stage power transmission source is arranged on the spray gun body, and the bottom end of the multi-stage power transmission source is driven by the driving source to realize the suction and instant ejection of mortar; the multistage power transmission source comprises an impact piston (2), a first-stage piston (5) and a second-stage piston (7), which are respectively movably arranged in the spray gun body in the vertical direction in sequence and are sequentially connected with a thrust spring (4), an expansion spring (6) and the expansion spring (6) to be used as partial drive of a return stroke;

the impact piston (2) is positioned in the spray gun body (15), the first-stage piston (5) and the second-stage piston (7) are respectively arranged in a shell with an external corresponding position, and the shell and the spray gun body, and the shell are respectively connected and fixed through bolts (11);

the driving source comprises an electric motor (9), an output end guide rod (10) of the electric motor (9), the upper end of the guide rod (10) is connected with a power piston (8), and the power piston (8) is driven by the electric motor (9) to reciprocate up and down;

a closed cavity (a 3) is formed in the second-stage piston (7) under the sealed environment, a striker (12) is installed in the closed cavity (a 3), and the striker (12) extends downwards to the outer side of the second-stage piston (7).

2. The mechanical impact mortar coating spray gun according to claim 1, wherein: and a rubber ring is arranged at each piston.