CN211964649U

CN211964649U - Spraying air compression all-in-one

Info

Publication number: CN211964649U
Application number: CN201922244019.1U
Authority: CN
Inventors: 年艳茹
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-07
Filing date: 2019-12-07
Publication date: 2020-11-20
Anticipated expiration: 2029-12-07

Abstract

The utility model relates to a spraying air compression all-in-one, the connection mode is: the overflow valve (1) is connected with the tank body (2) through a threaded connector welded on the tank body (2), an overflow port (35) is arranged on one side of the overflow valve (1), the funnel valve (23) is connected with the tank body (2) through a threaded connector welded on the tank body (2), a funnel (22) is arranged on the upper portion of the funnel valve (23), the discharge pipe (3) is welded on the tank body (2), a drain valve (4) is arranged on the tank body (2) at a position corresponding to a lower port of the discharge pipe (3), a three-way connector (36) is connected with the threaded portion at the upper end of the discharge pipe (3), one connector of the three-way connector (36) is provided with a low-pressure discharge valve (21), the other connector is provided with a feed valve (20), and the feed valve (20) is.

Description

Spraying air compression all-in-one

Technical Field

The utility model relates to a spraying equipment technical field especially relates to a spraying air compressor all-in-one.

Background

In engineering construction, various coatings are often required to be coated, manual coating is time-consuming and labor-consuming, the working efficiency is low, and the existing coating machine on the market can reduce the workload of coating personnel to a certain extent, but usually needs an additional high-pressure air source for atomization, so that the operation is inconvenient, and the application range is limited; the existing spraying machine has single function, liquid materials cannot be flexibly adjusted when the spraying machine is used, and the spraying effect can be greatly influenced when the liquid materials are thick.

SUMMERY OF THE UTILITY MODEL

The utility model provides a can provide high-pressure gas, can adjust liquid material in a flexible way when using and glue the degree, improve atomization effect, it can regard as the spraying pneumatics all-in-one that air compressor machine and flush coater used, the technical problem that solve need plus high pressurized air source for current flush coater atomizes, the operation is inconvenient, the restriction application range, and existing flush coater function singleness, when using, can not adjust liquid material in a flexible way, when liquid material is thick relatively, then can influence the spraying effect greatly.

In order to solve the technical problem, the utility model discloses a following technical scheme: a spraying air compression all-in-one machine, comprising: spraying mechanism, compressing mechanism and controlling means specifically include: the device comprises an overflow valve (1), a tank body (2), a discharge pipe (3), a blow-down valve (4), a gas storage tank (5), a six-way joint (6), a spraying switch (7), a pressure release valve (8), a gas outlet (9), a pressure gauge (10), a pressure switch (11), a one-way valve (12), a cooling fin (13), a clutch control lever (14), a motor (15), a diaphragm pump (16), a pressure regulating valve (17), a reflux valve (18), a high-pressure discharge port (19), a feed valve (20), a low-pressure discharge valve (21), a funnel (22), a funnel valve (23), an oil storage cavity (24), an eccentric wheel (25), a connecting shaft (26), a driven wheel (27), a movable wheel (28), a base (29), a motor shaft (30), a positioning bead (31), a piston (32), a long shaft (33), a gas inlet valve (34), an, A handrail (38) and a compression chamber (39). The concrete connection mode is as follows: the overflow valve (1) is connected with the tank body (2) through a threaded interface welded on the tank body (2), an overflow port (35) is arranged on one side of the overflow valve (1), the hopper valve (23) is connected with the tank body (2) through a threaded interface welded on the tank body (2), a funnel (22) is arranged on the upper portion of the hopper valve (23), the discharge pipe (3) is welded on the tank body (2), a blow-down valve (4) is arranged on the tank body (2) at a position corresponding to a lower port of the discharge pipe (3), a three-way interface (36) is connected with a threaded part at the upper end of the discharge pipe (3), one interface of the three-way interface (36) is provided with a low-pressure discharge valve (21), the other interface is provided with a feed valve (20), the feed valve (20) is connected with the diaphragm pump (16) through a hose, and a pressure regulating valve, The device comprises a reflux valve (18) and a high-pressure discharge hole (19), wherein the lower part of a diaphragm pump (16) is connected with an oil storage cavity (24), an eccentric wheel (25) is arranged in the oil storage cavity (24), the eccentric wheel (25) is arranged at one end of a connecting shaft (26), the other end of the connecting shaft (26) is connected with a driven wheel (27), a round hole is formed in the driven wheel (27), a movable wheel (28) is arranged at a corresponding position of the driven wheel, two round iron columns are arranged on one side of the movable wheel (28) corresponding to the driven wheel (27), the diameter and the distance of each round iron column correspond to the round hole in the driven wheel (27), the movable wheel (28) is connected with a motor shaft (30), a positioning bead (31) is arranged on the motor shaft (30), a groove is arranged on the outer side of the movable wheel (28), a clutch operating lever (14) is arranged at a corresponding position of the groove, the motor shaft (30) is arranged on a rotor of the motor (15), two motor shafts are arranged at two ends of the motor (15), the other motor shaft is connected with the long shaft (33), a piston (32) is arranged on the long shaft (33), the long shaft (33) and the piston (32) are arranged inside the compression chamber (39), a radiating fin (13) is arranged at the upper part of the compression chamber (39), a check valve (12) is connected with an air outlet of the compression chamber (39), the other end of the check valve (12) is connected with a three-way connector, one connector of the three-way connector is connected with an air inlet valve (34), the other connector is connected with a circulating connector (6), a pressure release valve (8), an air outlet (9), a pressure gauge (10) and a pressure switch (11) are arranged on the six-way connector (6), an air storage tank (5) is arranged at the lower part of the six-way connector (6), and, one side of the six-way connector (6) is provided with a spraying switch (7), the spraying switch (7) is fixed on the tank body (2), one end of the tank body (2) is provided with a handrail (38), and the bottom of the tank body (2) is provided with a caster (37).

Preferably, the discharge pipe (3) is welded inside the tank body (2), and the bottom of the discharge pipe (3) is provided with an inclined opening of 10-15 degrees.

Preferably, the driven wheel (27) and the movable wheel (28) can be exchanged in position.

Preferably, the compression chamber (39) and the oil storage chamber (24) are disposed on both sides of the motor (15).

Preferably, the compression chamber (39) and the oil storage chamber (24) can be exchanged.

Preferably, the gas storage tank (5) is welded inside the tank body (2).

Preferably, the blowdown valve (4) is arranged at the lower part of the air storage tank (5) and the tank body (2).

Preferably, the spraying switch (7) is provided with a start-stop switch and a click switch.

The utility model has the advantages that: when the spraying machine is used as a spraying machine, the spraying liquid materials are various, the liquid material viscosity degree is high, the atomization effect is good, when the spraying machine is used as an air compressor, high-pressure gas can be provided, the pressure is high, the multiple purposes of one machine are achieved, the structure is simple, and the operation is convenient.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Detailed Description

As shown in fig. 1, the utility model comprises: jar body, spraying mechanism, compressing mechanism and controlling means specifically include: the device comprises an overflow valve (1), a tank body (2), a discharge pipe (3), a blow-down valve (4), a gas storage tank (5), a six-way joint (6), a spraying switch (7), a pressure release valve (8), a gas outlet (9), a pressure gauge (10), a pressure switch (11), a one-way valve (12), a cooling fin (13), a clutch control lever (14), a motor (15), a diaphragm pump (16), a pressure regulating valve (17), a reflux valve (18), a high-pressure discharge port (19), a feed valve (20), a low-pressure discharge valve (21), a funnel (22), a funnel valve (23), an oil storage cavity (24), an eccentric wheel (25), a connecting shaft (26), a driven wheel (27), a movable wheel (28), a base (29), a motor shaft (30), a positioning bead (31), a piston (32), a long shaft (33), a gas inlet valve (34), an, A handrail (38) and a compression chamber (39). The concrete connection mode is as follows: the overflow valve (1) is connected with the tank body (2) through a threaded interface welded on the tank body (2), an overflow port (35) is arranged on one side of the overflow valve (1), the hopper valve (23) is connected with the tank body (2) through a threaded interface welded on the tank body (2), a funnel (22) is arranged on the upper portion of the hopper valve (23), the discharge pipe (3) is welded on the tank body (2), a blow-down valve (4) is arranged on the tank body (2) at a position corresponding to a lower port of the discharge pipe (3), a three-way interface (36) is connected with a threaded part at the upper end of the discharge pipe (3), one interface of the three-way interface (36) is provided with a low-pressure discharge valve (21), the other interface is provided with a feed valve (20), the feed valve (20) is connected with the diaphragm pump (16) through a hose, and a pressure regulating valve, The device comprises a reflux valve (18) and a high-pressure discharge hole (19), wherein the lower part of a diaphragm pump (16) is connected with an oil storage cavity (24), an eccentric wheel (25) is arranged in the oil storage cavity (24), the eccentric wheel (25) is arranged at one end of a connecting shaft (26), the other end of the connecting shaft (26) is connected with a driven wheel (27), a round hole is formed in the driven wheel (27), a movable wheel (28) is arranged at a corresponding position of the driven wheel, two round iron columns are arranged on one side of the movable wheel (28) corresponding to the driven wheel (27), the diameter and the distance of each round iron column correspond to the round hole in the driven wheel (27), the movable wheel (28) is connected with a motor shaft (30), a positioning bead (31) is arranged on the motor shaft (30), a groove is arranged on the outer side of the movable wheel (28), a clutch operating lever (14) is arranged at a corresponding position of the groove, the motor shaft (30) is arranged on a rotor of the motor (15), two motor shafts are arranged at two ends of the motor (15), the other motor shaft is connected with the long shaft (33), a piston (32) is arranged on the long shaft (33), the long shaft (33) and the piston (32) are arranged inside the compression chamber (39), a radiating fin (13) is arranged at the upper part of the compression chamber (39), a check valve (12) is connected with an air outlet of the compression chamber (39), the other end of the check valve (12) is connected with a three-way connector, one connector of the three-way connector is connected with an air inlet valve (34), the other connector is connected with a circulating connector (6), a pressure release valve (8), an air outlet (9), a pressure gauge (10) and a pressure switch (11) are arranged on the six-way connector (6), an air storage tank (5) is arranged at the lower part of the six-way connector (6), and, one side of the six-way connector (6) is provided with a spraying switch (7), the spraying switch (7) is fixed on the tank body (2), one end of the tank body (2) is provided with a handrail (38), and the bottom of the tank body (2) is provided with a caster (37).

The invention is described in detail below with reference to the following figures and examples:

example 1, this technical solution, when implemented: when the spraying machine is used, in a shutdown state, all valves and switches are in a closed state, an overflow valve (1) and a funnel valve (23) are opened, liquid materials (liquid state) to be sprayed are added from a funnel (22), when the liquid materials overflow from an overflow port (35), the liquid materials are filled, one valve of the overflow valve (1) and the funnel valve (23) is closed, a spraying side clutch operating rod (14) is pulled, a movable wheel (28) is completely meshed with a driven wheel (27), a positioning bead (31) is clamped in a groove, if the movable wheel (28) and the driven wheel (27) cannot be completely meshed and the positioning bead (31) cannot be clamped in the groove, a jog switch on a spraying switch (7) needs to be pressed, a motor shaft (30) rotates at a low speed, the clutch operating rod (14) is pulled, the movable wheel (28) and the driven wheel (27) are completely meshed, and the positioning bead (31) is clamped in the groove, the inching switch is loosened, the spray gun or the nozzle is connected to the high-pressure discharge port (19), the low-pressure discharge valve (21) is closed, and the feed valve (20) is opened. When the spraying function and the liquid material are ready, the spraying switch (7) is opened, the motor (15) rotates, the pressure regulating valve (17) on the upper part of the diaphragm pump (16) is loosened, the backflow valve (18) is screwed, the liquid material is sucked from the discharge pipe (3), and when the liquid material is sprayed out from the spray gun or the nozzle, the pressure regulating valve (17) is screwed again to start the spraying operation. After all the liquid materials are sprayed, the spraying switch (7) is closed, and the liquid materials are continuously added for spraying again.

Example 2, this technical solution, when implemented: when the spraying machine is used, in a shutdown state, all valves and switches are in a closed state, an overflow valve (1) and a funnel valve (23) are opened, liquid materials (liquid materials) to be sprayed are added from a funnel (22), the overflow port (35) is filled with the liquid materials when the liquid materials overflow, the overflow valve (1) and the funnel valve (23) are closed at the same time, a clutch operating rod (14) at one side is pulled and compressed to enable a movable wheel (28) to be completely meshed with a driven wheel (27), a positioning bead (31) is clamped in a groove, if the movable wheel (28) and the driven wheel (27) cannot be completely meshed and the positioning bead (31) cannot be clamped in the groove, a click switch on a spraying switch (7) needs to be pressed to enable a motor shaft (30) to rotate at a low speed, then the clutch operating rod (14) is pulled to enable the movable wheel (28) to be completely meshed with the driven wheel (27), and the positioning bead (31) is clamped, the inching switch is loosened, the spray gun or the nozzle is connected to the low-pressure discharge valve (21), and the low-pressure discharge valve (21) and the feed valve (20) are in a closed state. The spraying function and the liquid material are ready, the pressure switch (11) and the air inlet valve (34) are opened, the motor (15) rotates, when the pressure in the air storage tank (5) reaches the highest pressure, the pressure switch (11) is automatically closed, the low-pressure discharge valve (21) is opened, and the spraying operation is started. After all the liquid materials are sprayed, the pressure switch (11) is closed, and the liquid materials are continuously added for spraying again.

Example 3, this technical solution, when implemented: when the spraying machine is used, in a shutdown state, all valves and switches are in a closed state, the overflow valve (1) and the funnel valve (23) are opened, liquid materials (viscous state) to be sprayed are added from the funnel (22), the liquid materials are filled when the liquid materials overflow from the overflow port (35), the overflow valve (1) and the funnel valve (23) are closed at the moment, the clutch operating rod (14) at the spraying side and the compression side is pulled, the movable wheel (28) is completely meshed with the driven wheel (27), the positioning bead (31) is clamped in the groove, if the movable wheel (28) and the driven wheel (27) cannot be completely meshed, the positioning bead (31) cannot be clamped in the groove, the inching switch on the spraying switch (7) needs to be pressed, the motor shaft (30) rotates at a low speed, the clutch operating rod (14) is pulled, and the movable wheel (28) and the driven wheel (27) are completely meshed, the positioning ball (31) is clamped in the groove, the inching switch is loosened, the spray gun or the nozzle is connected to the high-pressure discharge port (19), the low-pressure discharge valve (21) is closed at the moment, and the feed valve (20) and the air inlet valve (34) are opened. Spraying function and liquid material are ready, open spraying switch (7), motor (15) rotate, spraying function and compression function simultaneous working this moment, compressed gas in gas holder (5) is the liquid material toward the external pressure from discharging pipe (3), diaphragm pump (16) is the liquid material toward outer absorption from discharging pipe (3), loosen air-vent valve (17) on diaphragm pump (16) upper portion, screw up backward flow valve (18), when treating that spray gun or nozzle department have the liquid material blowout, screw up air-vent valve (17) again, begin the spraying operation. After all liquid materials are sprayed, the spraying switch (7) is closed, the overflow valve (1) is opened, residual gas is discharged, and the liquid materials are continuously filled for spraying again.

Example 4, this technical solution, when implemented: when the spraying machine is used, in a shutdown state, all valves and switches are in a closed state, an overflow valve (1) and a funnel valve (23) are opened, liquid materials (viscous state) to be sprayed are added from a funnel (22), when the liquid materials overflow from an overflow port (35), the liquid materials are filled, one valve of the overflow valve (1) and the funnel valve (23) is closed, a clutch operating rod (14) at one spraying side and one compression side is pulled, a movable wheel (28) is completely meshed with a driven wheel (27), a positioning bead (31) is clamped in a groove, if the movable wheel (28) and the driven wheel (27) cannot be completely meshed and the positioning bead (31) cannot be clamped in the groove, a point-action switch on a movable spraying switch (7) needs to be pressed, a motor shaft (30) rotates at a low speed, the clutch operating rod (14) is pulled, and the movable wheel (28) and the driven wheel (27) are completely meshed, the positioning ball (31) is clamped in the groove, the inching switch is loosened, the high-pressure discharge port (19) is connected with a liquid port of the spray gun, the gas outlet (9) is connected with a gas port of the spray gun, the low-pressure discharge valve (21) and the gas inlet valve (34) are in a closed state at the moment, and the feed valve (20) is in an open state. The spraying function and the liquid material are ready, the spraying switch (7) is turned on, the motor (15) rotates, the spraying function and the compression function work simultaneously, the pressure regulating valve (17) at the upper part of the diaphragm pump (16) is loosened, the reflux valve (18) is screwed, and when the liquid material is sprayed out from the spray gun or the nozzle, the pressure regulating valve (17) is screwed again to start the spraying operation. At the moment, the compressed gas in the gas storage tank (5) blows out the liquid material from the nozzle of the spray gun to form good atomization effect. After all liquid materials are sprayed, the spraying switch (7) is closed, the overflow valve (1) is opened, residual gas is discharged, and the liquid materials are continuously filled for spraying again.

Example 5, this technical solution, when implemented: when the air compressor is used as an air compressor, under the shutdown state, all valves and switches are in the closed state, the clutch operating lever (14) at one compression side is pulled to enable the movable wheel (28) to be completely meshed with the driven wheel (27), the positioning bead (31) is clamped in the groove, if the movable wheel (28) and the driven wheel (27) cannot be completely meshed, the positioning bead (31) cannot be clamped in the groove, the inching switch on the spraying switch (7) needs to be pressed to enable the motor shaft (30) to rotate at a low speed, then the clutch operating lever (14) is pulled to enable the movable wheel (28) and the driven wheel (27) to be completely meshed, the positioning bead (31) is clamped in the groove, the inching switch is loosened, a pneumatic tool is connected to the air outlet (9), the pressure switch (11) and the air inlet valve (34) are opened, the motor (15) rotates, the compression function works at the moment, the compressed air in the air storage tank (5), when the pressure reaches the maximum pressure, the pressure switch (11) is automatically closed, at the moment, the pressures in the air storage tank (5) and the tank body (2) are the set maximum values, and the pneumatic tool is opened to work.

Example 6, this technical solution, when implemented: when the spraying machine is used as an air compressor and a spraying machine at the same time, in a shutdown state, all valves and switches are in a closed state, an overflow valve (1) and a funnel valve (23) are opened, liquid materials (liquid materials) to be sprayed are added from a funnel (22), when the overflow port (35) is filled with the liquid materials, one valve of the overflow valve (1) and the funnel valve (23) is closed, a clutch operating rod (14) at the spraying side and the compression side is pulled, a movable wheel (28) is completely meshed with a driven wheel (27), a positioning bead (31) is clamped in a groove, if the movable wheel (28) and the driven wheel (27) cannot be completely meshed and the positioning bead (31) cannot be clamped in the groove, a jog switch on a spraying switch (7) needs to be pressed, a motor shaft (30) rotates at a low speed, then the clutch operating rod (14) is pulled, and the movable wheel (28) is completely meshed with the driven wheel (27), the positioning ball (31) is clamped in the groove, the inching switch is loosened, the spray gun or the nozzle is connected to the high-pressure discharge port (19), the low-pressure discharge valve (21) is closed at the moment, and the feed valve (20) is opened. When the spraying function and the liquid material are ready, the spraying switch (7) is opened, the motor (15) rotates, the pressure regulating valve (17) on the upper part of the diaphragm pump (16) is loosened, the backflow valve (18) is screwed, the liquid material is sucked from the discharge pipe (3), and when the liquid material is sprayed out from the spray gun or the nozzle, the pressure regulating valve (17) is screwed again to start the spraying operation. At the moment, the compression function is also working, the inside of the air storage tank (5) is filled with compressed air, and the pneumatic tool is opened to work.

It can be seen from the above embodiment that, when using as the flush coater, the spraying liquid material's kind is many, and the liquid material glues thick degree greatly, and atomization effect is good, when using as the air compressor machine, can provide high-pressure gas, and pressure is big, reaches a tractor serves several purposes, and simple structure, convenient operation.

Claims

1. A spraying air compression all-in-one machine, comprising: spraying mechanism, compressing mechanism and controlling means, its characterized in that: the method specifically comprises the following steps: the device comprises an overflow valve (1), a tank body (2), a discharge pipe (3), a blow-down valve (4), a gas storage tank (5), a six-way joint (6), a spraying switch (7), a pressure release valve (8), a gas outlet (9), a pressure gauge (10), a pressure switch (11), a one-way valve (12), a cooling fin (13), a clutch control lever (14), a motor (15), a diaphragm pump (16), a pressure regulating valve (17), a reflux valve (18), a high-pressure discharge port (19), a feed valve (20), a low-pressure discharge valve (21), a funnel (22), a funnel valve (23), an oil storage cavity (24), an eccentric wheel (25), a connecting shaft (26), a driven wheel (27), a movable wheel (28), a base (29), a motor shaft (30), a positioning bead (31), a piston (32), a long shaft (33), a gas inlet valve (34), an, A handrail (38), a compression chamber (39); the concrete connection mode is as follows: the overflow valve (1) is connected with the tank body (2) through a threaded interface welded on the tank body (2), an overflow port (35) is arranged on one side of the overflow valve (1), the hopper valve (23) is connected with the tank body (2) through a threaded interface welded on the tank body (2), a funnel (22) is arranged on the upper portion of the hopper valve (23), the discharge pipe (3) is welded on the tank body (2), a blow-down valve (4) is arranged on the tank body (2) at a position corresponding to a lower port of the discharge pipe (3), a three-way interface (36) is connected with a threaded part at the upper end of the discharge pipe (3), one interface of the three-way interface (36) is provided with a low-pressure discharge valve (21), the other interface is provided with a feed valve (20), the feed valve (20) is connected with the diaphragm pump (16) through a hose, and a pressure regulating valve (17), a reflux, The high-pressure discharge port (19), the lower part of the diaphragm pump (16) is connected with an oil storage cavity (24), an eccentric wheel (25) is arranged inside the oil storage cavity (24), the eccentric wheel (25) is arranged at one end of a connecting shaft (26), the other end of the connecting shaft (26) is connected with a driven wheel (27), a circular hole is formed in the driven wheel (27), a movable wheel (28) is arranged at a corresponding position of the circular hole, two circular iron columns are arranged on one side of the movable wheel (28) corresponding to the driven wheel (27), the diameter and the distance of each circular iron column correspond to the circular hole in the driven wheel (27), the movable wheel (28) is connected with a motor shaft (30), a positioning bead (31) is arranged on the motor shaft (30), a groove is formed in the outer side of the movable wheel (28), a clutch operating rod (14) is arranged at a corresponding position of the groove, and the lower end of, the motor shaft (30) is arranged on a rotor of the motor (15), two motor shafts are arranged at two ends of the motor (15), the other motor shaft is connected with the long shaft (33), a piston (32) is arranged on the long shaft (33), the long shaft (33) and the piston (32) are arranged inside the compression chamber (39), a radiating fin (13) is arranged at the upper part of the compression chamber (39), a check valve (12) is connected with an air outlet of the compression chamber (39), the other end of the check valve (12) is connected with a three-way connector, one connector of the three-way connector is connected with an air inlet valve (34), the other connector is connected with a six-way connector (6), a pressure release valve (8), an air outlet (9), a pressure gauge (10) and a pressure switch (11) are arranged on the six-way connector (6), an air storage tank (5) is arranged at the lower part of the six-way connector (6), one side of the six-way connector (6) is provided with a spraying switch (7), the spraying switch (7) is fixed on the tank body (2), one end of the tank body (2) is provided with a handrail (38), and the bottom of the tank body (2) is provided with a caster (37).

2. A combined air and fuel spraying and pressing machine as claimed in claim 1, wherein the discharge pipe (3) is welded inside the tank body (2).

3. The integrated spraying and air compressing machine as claimed in claim 1, wherein the bottom of the discharging pipe (3) is provided with a bevel opening of 10-15 degrees.

4. A painting and air compression machine according to claim 1, characterised in that the driven wheel (27) and the active wheel (28) can be transposed.

5. A painting and air compressing all-in-one machine according to claim 1, wherein the compression chamber (39) and the oil storage chamber (24) are provided on both sides of the motor (15).

6. A combined air and fuel spraying and compressing machine as claimed in claim 1, wherein the compression chamber (39) and the fuel reservoir (24) are reversible.

7. A painting and air-compressing all-in-one machine according to claim 1, characterized in that the air storage tank (5) is welded inside the tank body (2).

8. The integrated spraying and air-compressing machine as claimed in claim 1, wherein the spraying switch (7) is provided with a start-stop switch and a click switch.

9. A painting and air compressing all-in-one machine as claimed in claim 1, wherein the blowoff valve (4) is disposed at the lower part of the air storage tank (5) and the tank body (2).