CN211762206U - Environmentally clean dust-free desktop cutting machine - Google Patents

Abstract

The utility model belongs to the technical field of cutting equipment, in particular to an environment-cleaning dust-free desktop cutting machine. The utility model comprises a casing and a cutting workbench arranged on the casing, a saw cut is provided on the cutting workbench; a suction chamber is arranged under the cutting workbench, and the saw cut doubles as an air inlet of the suction chamber, The air suction chamber is provided with an air outlet of the air suction chamber, and a horizontal centrifugal separator is installed at the air outlet of the air suction chamber; A first ash collecting box is arranged at the ash drop port of the separator, a separator air outlet is arranged at the front end of the horizontal centrifugal separator, a filter cartridge is arranged at the air outlet of the separator, and a filter cartridge is installed at the air outlet of the filter cartridge. There is a negative pressure fan. The utility model can realize the pre-separation of dust and gas for the dust-containing air flow, which can realize dust-free cutting and ensure the long-term stable operation of the equipment. The equipment is small in size and convenient to carry and use.

Description

Environmentally clean dust-free desktop cutting machine

technical field

The utility model belongs to the technical field of cutting equipment, in particular to an environment-cleaning dust-free desktop cutting machine.

Background technique

In production and life, it is necessary to use a desktop cutting machine to cut wood, stone, ceramic tiles and other materials. These materials will generate a lot of dust during the cutting process, which will endanger the health of operators and adversely affect the surrounding environment. For this reason, countries around the world have strict requirements on these dust emissions. The EU standard prEN16770 stipulates that the dust emissions from wood cutting are less than 100μg/m3, and the US Occupational Safety and Health Administration (OSHA) stipulates the dust emissions from stone cutting in OSHA3902-102016. It is required to be less than 50 μg/m ³ and the dust collection rate is greater than 99%.

The main technical solution of some dust-free desktop cutting machines announced now is to use a negative pressure fan to suck the dust generated when cutting the workpiece into the suction chamber with the saw and air inlet, and the suction chamber passes through the dust channel and then enters the dust filter. The air in the dust filter bag is discharged by negative pressure, and then it is discharged from the exhaust port after passing through the negative pressure fan, so as to realize dust-free cutting.

This technical solution has the following disadvantages: (1) It can effectively suppress the dust in the initial stage, but as a large amount of dust is collected, the filter bag is gradually blocked, resulting in a rapid decline in the dust collection capacity; (2) The cleaning of the filter bag is difficult and easy (3) The filtration efficiency of the dust filter bag is not high, and a large amount of small-diameter dust is still discharged into the atmosphere, which cannot meet the dust emission requirement of less than 50 μg/m ³ . HEPA), but a large amount of dust generated in the cutting process will cause the HEPA filter to block sharply, so that it cannot operate normally; (4) Since the cutting machine needs to be frequently transported to the work site for work, the volume of the cutting machine is required not to be too large.

Based on the above reasons, the current desktop cutting machines cannot meet the requirements of dust emission standards in the environment at the same time, but also ensure the long-term stable operation of the equipment and the problem that the volume cannot be too large. How to overcome the above problems is a long-standing technical problem in the industry.

Utility model content

In order to solve the above-mentioned technical problems, the purpose of the present utility model is to provide a clean environment type dust-free desktop cutting machine that can realize the pre-separation of dust and gas on the dust-laden airflow, not only realizes dust-free cutting, but also ensures long-term stable operation of the equipment and is small in size. .

In order to achieve the above technical purpose, the utility model adopts the following technical scheme: an environment-cleaning type dust-free desktop cutting machine, comprising a casing and a cutting workbench arranged on the casing, the cutting workbench is provided with a saw, so A saw blade is installed in the saw mouth, and the saw blade is connected to a drive motor;

A suction chamber is arranged under the cutting table, and the saw edge is also used as an air inlet of the suction chamber. Splitter;

The rear end of the horizontal centrifugal separator is provided with a separator ash drop port, a first ash collecting box is arranged at the ash drop port of the separator, and the front end of the horizontal centrifugal separator is provided with a separator air outlet, A filter cartridge is arranged at the air outlet of the separator, and a negative pressure fan is installed at the air outlet of the filter cartridge.

As a preferred technical solution, the axis of air rotation of the horizontal centrifugal separator is parallel to the cutting table.

As a preferred technical solution, an exhaust bin is arranged in the casing, the saw blade drive motor and the negative pressure fan are installed in the exhaust bin, and an exhaust port is arranged at the rear end of the exhaust bin.

As a preferred technical solution, sound-absorbing cotton is provided at the air outlet.

As a preferred technical solution, a large particle outlet is provided at the bottom of the suction bin, and a second ash collecting box is provided at the large particle outlet.

As a preferred technical solution, a third dust collecting box is provided at the bottom of the filter cartridge.

As a preferred technical solution, the first gray box, the second gray box and the third gray box are integrally provided.

As a preferred technical solution, the cutting table includes a main table and an insert, and the saw edge is arranged on the insert.

Due to the adoption of the above-mentioned technical solutions, compared with the prior art, the present invention has at least the following beneficial effects:

(1) The high-speed airflow at the air inlet of the saw and suction chamber carries the dust/chips generated by cutting into the suction chamber. The dust-containing gas passes through the horizontal centrifugal separator and is filtered to realize the separation of dust and air, and the clean air passes through the negative The compressor is vented to the atmosphere.

(2) Most of the dust has been separated in the horizontal centrifugal separator first, and only a small amount of fine dust needs to be filtered, so the filter material can be filtered with high efficiency, which can meet the dust emission requirement of less than 50μg/m ³ and achieve clean emission. In addition, the filter is not easy to be blocked, and the period of cleaning or replacement is greatly extended, which can ensure the long-term stable operation of the equipment.

(3) The separated dust will fall into the dust box for easy cleaning.

(4) The use of a horizontal centrifugal separator reduces the volume of the equipment and is easy to carry.

Description of drawings

The following drawings are only intended to illustrate and explain the present invention schematically, and do not limit the scope of the present invention. in:

Fig. 1 is the front view structure schematic diagram of the embodiment of the present utility model;

Fig. 2 is the side view structure schematic diagram of the embodiment of the present invention;

Fig. 3 is the top view structure schematic diagram of the embodiment of the present invention;

4 is a schematic structural diagram of a cutting table in an embodiment of the present invention;

5 is a schematic structural diagram of a horizontal centrifugal separator in an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a ash collecting box in an embodiment of the present invention.

In the picture: 1-chassis; 11-exhaust bin; 12-air outlet; 13-silence cotton; 14-workpiece; 2-cutting table; 21-main table; 22-insert; 3-saw ;4-saw blade;5-drive motor;6-suction bin;61-semi-annular suction duct;62-large particle outlet;7-horizontal centrifugal separator;71-separator ash outlet;72-separation 73 - air outlet of suction bin; 8 - ash box; 81 - 1st ash box; 82 - 2nd ash box; 83 - 3rd ash box; 9 - filter cartridge; 10 - negative Compressor.

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings and embodiments. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, as those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and are not intended to limit the scope of protection of the claims.

As shown in FIG. 1 and FIG. 6 , the environment-cleaning dust-free desktop cutting machine includes a casing 1 and a cutting table 2 arranged on the casing 1. The cutting table 2 is provided with a saw 3, and the A saw blade 4 is installed in the saw blade, and the saw blade 4 is connected to the drive motor 5; with reference to FIG. 4 , in this embodiment, the cutting table 2 includes a main table 21 and an insert block 22, and the saw blade 3 is arranged on the on the insert block 22 .

A suction bin 6 is arranged below the cutting table 2, the saw 3 also serves as an air inlet of the suction bin, and the suction bin 6 is provided with a suction bin 73 (ie, the A semi-circular air suction duct 61 is formed in the air chamber 6 along the rotation track of the saw blade, which facilitates the rapid flow of dust-laden airflow to the air outlet of the air suction chamber, prevents dust from overflowing from the saw opening 3, and ensures that the dust emission concentration in the working environment is less than 50 μg/m ³ , to achieve clean discharge; a horizontal centrifugal separator 7 is installed at the air outlet 73 of the suction chamber;

The rear end of the horizontal centrifugal separator 7 is provided with a separator ash drop port 71, the separator ash drop port 71 is provided with a first ash collecting box 81, and the front end of the horizontal centrifugal separator 7 is provided with a The air outlet 72 of the separator, the air outlet 72 of the separator is provided with a filter cartridge 9, the air outlet of the filter cartridge 9 is installed with a negative pressure fan 10, and the bottom of the filter cartridge 9 is provided with a third ash collecting box 83; the dust filtered by the filter cartridge 9 will fall into the third dust collecting box 83 after being scraped off, so that the filtering can be cleaned. The filtration adopts cartridge filtration, which has the advantage of providing a larger filtration area in a smaller space.

Referring to FIG. 2 , the air rotation travel axis of the horizontal centrifugal separator 7 is parallel to the cutting table 2 . When the dust-laden air enters the separator shell and spirals along the inner wall of the shell, the dust-laden air forms a spiral airflow and advances in a fixed direction. It reaches the inner wall of the shell and is separated from the air. The separated dust particles reach the rear end of the separator and then enter the ash drop port 71 of the separator along the tangential direction and fall into the first ash collecting box 81 to complete the separation of dust and gas, and the separated air is behind After the end is folded back, it leaves the separator from the separator outlet 72 . The centrifugal separator adopts a horizontal structure, which can reduce the height of the equipment, reduce the volume of the equipment, and facilitate portability.

During specific installation, the lower part of the insert block 22 is sealed with the main workbench 21 , and the lower part of the main workbench 21 and the upper part of the suction bin 6 are sealed. The wind generated by the negative pressure fan 10 can only enter from the saw opening 3 and the air inlet of the air suction bin. After removing the insert 22, operations such as saw blade replacement can be facilitated. When working, the wind speed at the air inlet of the suction chamber is preferably greater than the linear speed of the rotation of the saw blade 4, so that the high-speed airflow can effectively suck the dust generated by cutting into the suction chamber 6.

Referring to FIG. 3 , the casing 1 is provided with an exhaust bin 11 , the saw blade drive motor 5 and the negative pressure fan 10 are installed in the exhaust bin 11 , and the rear end (C-D) of the exhaust bin 11 is provided There are exhaust vents 12. The air outlet 12 is provided with a sound-absorbing cotton 13, and the sound-absorbing cotton 13 will effectively reduce the noise generated by the saw blade driving motor and the negative pressure fan. It should be noted that, in Figure 2, the air outlet can be arranged at A-B-C-D. As a preferred embodiment of the present invention, C-D is used as the air outlet, and the purpose is to take away the heat generated by the motor when the wind passes through the surface of the motor to prevent the motor from overheating.

Referring to FIG. 1 , a large particle outlet 62 is disposed at the bottom of the suction bin 6 , and a second ash collecting box 82 is disposed at the large particle outlet 62 . Referring to FIG. 6 , in this embodiment, the first gray box 81 , the second gray box 82 and the third gray box 83 are integrally provided, that is, the gray box 8 . The first ash box 81 is used to collect the dust generated by the horizontal centrifugal separator, the second ash box 82 is used to collect larger particles in the suction chamber, and the third ash box 83 is used to collect the dust at the filter cartridge .

1 to 3, the working principle of the present utility model is as follows: when the saw blade 4 rotates at a high speed to cut the workpiece 14, the wind speed at the saw opening 3 (air inlet of the suction bin) is guaranteed to be greater than the linear speed of the rotation of the saw blade 4, so that the suction The high-speed airflow at the air inlet of the silo can effectively carry all the dust/chips generated by cutting into the air suction silo 6, and the dust-laden gas passes through the horizontal centrifugal separator 7 and the filter cartridge 9 to realize the separation of dust and air, and the clean air passes through. The negative pressure fan 10 is discharged into the atmosphere. In this way, most of the dust has been separated in the horizontal centrifugal separator 7 first, and only a small amount of fine dust needs to be filtered, so the filter material can be filtered with high efficiency, which can meet the dust emission requirement of less than 50μg/m ³ , and achieve clean emission. In addition, the filter is not easy to be blocked, and the period of cleaning or replacement is greatly extended, which can ensure the long-term stable operation of the equipment.

The above descriptions are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention. Equivalent changes and modifications made by any person skilled in the art without departing from the concept and principles of the present invention shall fall within the protection scope of the present invention.

Claims (8)

1. The environment-cleaning dust-free table type cutting machine comprises a machine shell and a cutting workbench arranged on the machine shell, wherein a saw cut is formed in the cutting workbench, a saw blade is installed in the saw cut, and the saw blade is connected with a driving motor; the method is characterized in that:

an air suction bin is arranged below the cutting workbench, the saw cut also serves as an air inlet of the air suction bin, the air suction bin is provided with an air outlet of the air suction bin, and a horizontal centrifugal separator is arranged at the air outlet of the air suction bin;

the rear end of the horizontal centrifugal separator is provided with a separator ash falling port, the separator ash falling port is provided with a first ash collecting box, the front end of the horizontal centrifugal separator is provided with a separator air outlet, the separator air outlet is provided with a filter cartridge, and the air outlet of the filter cartridge is provided with a negative pressure fan.

2. An environmentally clean dust-free bench cutter as set forth in claim 1, wherein: the air rotation advancing axis of the horizontal centrifugal separator is parallel to the cutting workbench.

3. An environmentally clean dust-free bench cutter as set forth in claim 1, wherein: an exhaust bin is arranged in the casing, the saw blade driving motor and the negative pressure fan are both arranged in the exhaust bin, and an air outlet is formed in the tail end of the exhaust bin.

4. An environmentally clean dust-free bench cutter as set forth in claim 3, wherein: and the air outlet is provided with silencing cotton.

5. An environmentally clean dust-free bench cutter as set forth in claim 1, wherein: the bottom of the air suction bin is provided with a large particle matter outlet, and the large particle matter outlet is provided with a second ash collecting box.

6. An environmentally clean dust-free bench cutter as set forth in claim 5, wherein: and a third ash collecting box is arranged at the bottom of the filter cylinder.

7. An environmentally clean dust-free bench cutter as set forth in claim 6, wherein: the first ash collecting box, the second ash collecting box and the third ash collecting box are integrally arranged.

8. An environmentally clean dust-free bench cutter as set forth in any of claims 1 to 7, wherein: the cutting workbench comprises a main workbench and an embedded block, and the saw cuts are arranged on the embedded block.

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