WO2021036475A1

WO2021036475A1 - Low-temperature nitrogen sandblasting device

Info

Publication number: WO2021036475A1
Application number: PCT/CN2020/098991
Authority: WO
Inventors: 孙玉利; 刘旭; 孙淑琴; 谢筱萍; 盛一
Original assignee: 南京星合精密智能制造研究院有限公司
Priority date: 2019-08-29
Filing date: 2020-06-29
Publication date: 2021-03-04

Abstract

A low-temperature nitrogen sandblasting device, comprising a reaction chamber (1), a circulation gas pump (2) being fixedly connected to an outer side wall of the reaction chamber, a material storage tank (3) being fixedly connected to the bottom of the reaction chamber, and the material storage tank being in communication with the circulation gas pump by means of a second valve (7). The material storage tank, the circulation gas pump and a vacuum pump (22) are provided outside the reaction chamber, a gas inlet (8) is provided at a gas inlet end of the circulation gas pump, a connecting pipe (4) is provided at a gas outlet end of the circulation gas pump, and a plurality of nozzles (6) and first valves (5) are provided on the connecting pipe. The low-temperature nitrogen sandblasting device is used to prevent water vapor from turning into frost and then attaching to a workpiece when nitrogen is cooled, the nitrogen and abrasive can be recycled, thereby the machining process is low-carbon and environmentally friendly.

Description

Low-temperature nitrogen sand blasting device

Technical field

The utility model relates to the technical field of sandblasting machines, in particular to a low-temperature nitrogen sandblasting device.

Background technique

The sandblasting machine uses compressed air in the pipeline to transport powdery granular materials from one place to another. In the process of converting kinetic energy into potential energy, the high-speed moving sand particles wash the surface of the object to improve the surface quality of the object. .

Nitrogen sand blasting uses nitrogen to cool the workpiece, thereby facilitating the treatment of the surface of the workpiece. However, the existing low-temperature nitrogen sand blasting device still has shortcomings. Most of the existing sand blasting devices are performed by completely cooling the inside of the reaction chamber. Sandblasting, this method will cause a lot of waste of nitrogen, is not low-carbon and environmentally friendly, and most of the fixtures of existing sandblasting devices are fixed, and there are dead corners in sandblasting, which affects the quality of processing.

technical problem

In order to solve the problems that the existing low-temperature nitrogen sand blasting device wastes a large amount of raw materials and the sand blasting has dead ends, a low-temperature nitrogen sand blasting device is proposed.

Technical solutions

In order to achieve the above purpose, the present utility model adopts the following technical solutions:

A low-temperature nitrogen sand blasting device includes a reaction chamber, the outer side surface of the reaction chamber is fixedly connected with a circulating air pump, and the bottom of the reaction chamber is fixedly connected with a storage box, and the storage box is connected to the bottom of the reaction chamber through a second valve. The circulating air pump is connected, the air inlet of the circulating air pump is provided with an air inlet, the air outlet of the circulating air pump is connected with a connecting pipe, the connecting pipe is connected with a first valve and a plurality of nozzles, the outer surface of the reaction chamber A circulation pipe is provided, and both ends of the circulation pipe are respectively communicated with the reaction chamber and the circulating air pump.

As a further description of the above technical solution:

The side wall of the reaction chamber is provided with a sealed door, both sides of the sealed door are fixedly connected with racks, both sides of the sealed door are provided with first motors, and the output of the two first motors is A gear is connected to the shaft transmission, and the gear is in meshing connection with the rack.

As a further description of the above technical solution:

The bottom of the reaction chamber is bolted to a second motor, and the output shaft of the second motor is drivingly connected to a first electric push rod. The telescopic end of the first electric push rod is fixedly connected with a clamping block. A clamp is arranged inside, and a card slot is opened at the bottom of the clamp.

As a further description of the above technical solution:

A vacuum pump is fixedly connected to the top of the reaction chamber, and the vacuum pump is in communication with the inside of the reaction chamber.

As a further description of the above technical solution:

The card block can be connected to the inside of the card slot.

As a further description of the above technical solution:

The inner surface wall of the reaction chamber is fixedly connected with a second electric push rod, the telescopic end of the second electric push rod is fixedly connected with a third electric push rod, and the telescopic end of the third electric push rod is fixedly connected with a clamping block.

Beneficial effect

1. In the present utility model, a storage tank, a circulating air pump and a vacuum pump are arranged outside the reaction chamber, the air inlet end of the circulating air pump is provided with an air inlet, the air outlet end of the circulating air pump is provided with a connecting pipe, and the connecting pipe is provided with multiple There are two nozzles and the first valve, and the second valve is set on the storage box. The advantage of this design is that the inside of the reaction chamber can be pumped to a near vacuum state by a vacuum pump, because the moisture in the air is drawn out of the reaction chamber, and then nitrogen is used to cool down At the same time, it can avoid water vapor addition and frost from adhering to the workpiece, and at the same time, the circulating pipe can circulate nitrogen and abrasives through the circulating air pump, thereby helping to save the amount of raw materials used, making the processing process low-carbon and environmentally friendly.

2. In the present utility model, a second motor is provided at the bottom of the reaction chamber, a first motor and a sealed door are provided on the side of the reaction chamber, a rack is provided on both sides of the sealed door, and a gear is provided on the output shaft of the first motor. , The inner bottom of the reaction chamber is equipped with a clamp, the output shaft of the second motor is equipped with a first electric push rod, the telescopic end of the first electric push rod is equipped with a clamping block, and the bottom of the clamp is equipped with a clamping slot. The advantages of this design It is: the sealed door is driven by the first motor, which helps to improve the sealing of the reaction chamber, and the second motor can drive the fixture to rotate through the first electric push rod, so that the workpiece can be rotated, so that the workpiece can fully contact with the abrasive and improve the processing efficiency. accuracy.

3. In the present utility model, a second electric push rod is arranged inside the reaction chamber, a third electric push rod is arranged at the telescopic end of the second electric push rod, and a clamping block is arranged at the telescopic end of the third electric push rod. The advantage of the design is: after the processing is finished, the clamp block is clamped by the third electric push rod by stretching, and then the second electric push rod can be stretched to send the clamp out of the reaction chamber, which realizes automatic operation and facilitates the taking of the workpiece. .

Description of the drawings

Fig. 1 shows a schematic diagram of the internal front view structure of a reaction chamber provided according to an embodiment of the present invention;

Figure 2 shows a schematic diagram of the internal side structure of a reaction chamber provided according to an embodiment of the present invention;

FIG. 3 shows a schematic diagram of the connection structure between the second motor and the clamp according to an embodiment of the present invention;

Fig. 4 shows a schematic diagram of the internal top view structure of the reaction chamber provided according to an embodiment of the present invention.

illustration:

1. Reaction chamber; 2. Circulating air pump; 3. Storage box; 4. Connecting pipe; 5. Nozzle; 6. First valve; 7. Second valve; 8. Air inlet; 9. Circulation pipe; 10. Sealed door; 11. The first motor; 12, the gear; 13, the rack; 14, the second motor; 15, the first electric push rod; 16, the clamp; 17, the block; 18, the slot; 19, the second Electric push rod; 20, the third electric push rod; 21, clamp block; 22, vacuum pump.

Embodiments of the present invention

The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, not all implementations. example. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of the present utility model.

Please refer to Figures 1-4, this utility model provides a technical solution: a low-temperature nitrogen sand blasting device, including a reaction chamber 1, the outer side surface wall of the reaction chamber 1 is fixedly connected with a circulating air pump 2, and the bottom of the reaction chamber 1 is fixed The storage tank 3 is connected with the circulating air pump 2 through the second valve 7. The air inlet of the circulating air pump 2 is provided with an air inlet 8, and the air outlet of the circulating air pump 2 is connected with a connecting pipe 4, the connecting pipe 4 is connected with a first valve 5 and a plurality of nozzles 6, the outer wall of the reaction chamber 1 is provided with a circulation pipe 9, and the two ends of the circulation pipe 9 are respectively connected with the reaction chamber 1 and the circulating air pump 2, through the circulating air pump 2 and the circulation The pipe 9 recycles nitrogen and abrasives, which helps to save the amount of raw materials used, and makes the processing low-carbon and environmentally friendly.

Specifically, as shown in Figures 1 and 2, the side wall of the reaction chamber 1 is provided with a sealed door 10, both sides of the sealed door 10 are fixedly connected with racks 13, and both sides of the sealed door 10 are provided with first The motor 11 and the output shafts of the two first motors 11 are drivingly connected with a gear 12, and the gear 12 is meshed and connected with the rack 13, and the sealed door 10 helps to improve the sealing of the reaction chamber 1 and prevent nitrogen leakage.

Specifically, as shown in FIG. 3, the bottom of the reaction chamber 1 is bolted to the second motor 14, and the output shaft of the second motor 14 is drivingly connected to the first electric push rod 15, and the telescopic end of the first electric push rod 15 is fixed. The clamping block 17 is connected, the inside of the reaction chamber 1 is provided with a clamp 16, and the bottom of the clamp 16 is provided with a clamping slot 18, and the clamping block 17 can be clamped to the inside of the clamping slot 18. The first electric push rod 15 can be used after the processing is completed. Shrink to separate the card block 17 from the card slot 18.

Specifically, as shown in FIG. 1, a vacuum pump 22 is fixedly connected to the top of the reaction chamber 1, and the vacuum pump 22 is in communication with the inside of the reaction chamber 1. The vacuum pump 22 can extract the air in the reaction chamber 1 to prevent moisture in the air from forming frost. .

Specifically, as shown in Figure 4, the inner surface of the reaction chamber 1 is fixedly connected with a second electric push rod 19, and the telescopic end of the second electric push rod 19 is fixedly connected with a third electric push rod 20, and the third electric push rod A clamping block 21 is fixedly connected to the telescopic end of 20. Stretching the third electric push rod 20 can push the clamping block 21 to clamp the clamp 16, and stretching the second electric push rod 19 can send the clamp 16 out, facilitating the taking of the workpiece.

Working principle: When in use, the first motor 11, the second motor 14, the first electric push rod 15, the second electric push rod 19 and the third electric push rod 20 are supplied with mains electricity. First, turn on the first motor 11, The gear 12 is driven to rotate. Since the relative position of the gear 12 does not change, the rack 13 is moved to drive the sealing door 10 to open, and then the clamp 16 is placed in the reaction chamber 1, so that the clamping block 17 is clamped into the inside of the clamping slot 18. Then connect the clamp 16 with the first electric push rod 15, and then clamp the workpiece with the clamp 16. When the first motor 11 is reversed, the sealed door 10 is closed; secondly, the vacuum pump 22 is turned on to pump the reaction chamber 1 into a nearly vacuum state , Turn on the second motor 14, drive the fixture 16 to rotate through the rotation of the first electric push rod 15, open the first valve 6, turn on the circulating air pump 2, and pass in nitrogen from the air inlet 8. The nitrogen flows from the nozzle 5 along the connecting pipe 4 Spray to cool the workpiece, the nitrogen in the reaction chamber 1 can be sprayed out from the nozzle 5 again through the circulation pipe 9 to realize recycling. Then the second valve 7 is opened, and the circulating air pump 2 can pump out the abrasive in the storage tank 3 It is discharged through the nozzle 5, and then the workpiece is polished with abrasives. The abrasives can also be recycled through the circulation pipe 9; finally, after the processing is completed, the vacuum pump 22 is turned on to inflate the inside of the reaction chamber 1 to balance the internal and external air pressures, and open the seal The door 10, after the clamp 16 is standing still, stretch the third electric push rod 20 so that the clamp block 21 clamps the clamp 16, and then shrink the first electric push rod 15 to drive the clamp block 17 out of the groove 18, and then stretch the second electric push rod 15 The electric push rod 19 only needs to send the clamp 16 out of the reaction chamber 1, and the above-mentioned steps can solve the problems that the existing low-temperature nitrogen sand blasting device wastes a large amount of raw materials and has dead spots in sand blasting.

The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited to this. Anyone familiar with the technical field within the technical scope disclosed by the present utility model, according to the present utility model The technical solutions of the new type and the concept of the utility model to be equivalently replaced or changed shall be covered by the scope of protection of the present utility model.

Claims

A low-temperature nitrogen sand blasting device, comprising a reaction chamber (1), characterized in that the outer surface wall of the reaction chamber (1) is fixedly connected with a circulating air pump (2), and the bottom of the reaction chamber (1) is fixed A storage tank (3) is connected, and the storage tank (3) is in communication with a circulating air pump (2) through a second valve (7), and the air intake end of the circulating air pump (2) is provided with an air inlet (8). ), the outlet end of the circulating air pump (2) is connected with a connecting pipe (4), the connecting pipe (4) is connected with a first valve (5) and a plurality of nozzles (6), the reaction chamber (1) A circulation pipe (9) is arranged on the outer surface wall, and the two ends of the circulation pipe (9) are respectively communicated with the reaction chamber (1) and the circulating air pump (2).
The low-temperature nitrogen sand blasting device according to claim 1, characterized in that the side surface wall of the reaction chamber (1) is provided with a sealed door (10), and both sides of the sealed door (10) are fixed A rack (13) is connected, a first motor (11) is provided on both sides of the sealed door (10), and the output shafts of the two first motors (11) are drivingly connected with a gear (12), so The gear (12) is in meshing connection with the rack (13).
The low-temperature nitrogen sand blasting device according to claim 1, wherein the bottom of the reaction chamber (1) is bolted to a second motor (14), and the output shaft of the second motor (14) is connected in transmission There is a first electric push rod (15), the telescopic end of the first electric push rod (15) is fixedly connected with a clamping block (17), the reaction chamber (1) is provided with a clamp (16), the A card slot (18) is opened at the bottom of the clamp (16).
The low-temperature nitrogen sandblasting device according to claim 1, characterized in that a vacuum pump (22) is fixedly connected to the top of the reaction chamber (1), and the vacuum pump (22) is in communication with the inside of the reaction chamber (1) .
The low-temperature nitrogen sand blasting device according to claim 3, characterized in that the clamping block (17) can be clamped to the inside of the clamping slot (18).
The low-temperature nitrogen sand blasting device according to claim 1, characterized in that a second electric push rod (19) is fixedly connected to the inner surface of the reaction chamber (1), and a second electric push rod (19) is fixedly connected to the inner surface of the reaction chamber (1). A third electric push rod (20) is fixedly connected to the telescopic end of the third electric push rod (20), and a clamping block (21) is fixedly connected to the telescopic end of the third electric push rod (20).