CN216457499U

CN216457499U - Negative pressure dust pelletizing system polishes

Info

Publication number: CN216457499U
Application number: CN202122866270.9U
Authority: CN
Inventors: 刘功磊; 武永辉
Original assignee: Hebei Juxing Intelligent Equipment Manufacturing Co ltd
Current assignee: Hebei Juxing Intelligent Equipment Manufacturing Co ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-05-10
Anticipated expiration: 2031-11-22

Abstract

The utility model discloses a grinding negative pressure dust removal system for grinding and removing dust of castings, which comprises a grinding room, a dust removal system and an air supplement system. The lower part of the polishing area of the polishing room is provided with a dust collecting cover which is communicated with a dust remover through a dust removing pipeline. The blower sends outdoor air into the fan cover and the air distribution device at the top of the polishing room through the air supply pipeline, and the air is uniformly supplied through the closely-arranged small air supply pipes at the lower part of the air distribution device. The air supply amount is 50-70% of the dust removal air amount, and a negative pressure area at the lower part of the polishing room is not provided with a hole. The air supply pipeline is provided with a sealed water tank, and the humidity and the temperature of the polishing room are properly adjusted by using the water temperature. The dust removal pipeline is provided with a dust collecting hopper and a spiral dust remover, so that dust collection can be conveniently cleaned. The utility model forms the pressure distribution of upper positive and lower negative in the polishing room, and avoids the dust formation above the waist of an operator.

Description

Negative pressure dust pelletizing system polishes

Technical Field

The utility model is applied to the field of casting, and relates to an environment-friendly dust removal system during casting polishing.

Background

Casting unpacking and cleaning grinding of the casting are necessary process flows for cleaning the surface of the casting so as to clean casting defects such as surface burrs and the like. The grinding of the casting inevitably causes dust pollution, and in order to meet the requirement of environmental protection, a grinding area is generally divided into a plurality of grinding rooms or grinding rooms, and the top of the grinding rooms or the grinding rooms is subjected to air draft for dust removal. Although the mode can isolate the pollution of dust to a workshop, the grinding room still has the pollution of dust drift, the casting grinding position is mostly at the waist of an operator, and the dust can drift through the nostril space of the operator by upper dust removal, so that the hidden danger of dust occupational diseases can still be generated to the operator. Especially for steel castings, the dust has a high specific gravity, and larger dust particles cannot be pumped away through upper dust removal.

Patent CN210229519U discloses a sanding room dust pelletizing system, and this dust pelletizing system area is little, can arrange nearby the point of polishing, concentrates the dust removal to the point of polishing. Patent CN208289697U discloses a portable sanding room dust pelletizing system, and this technical scheme's thinking carries out regional dust removal of dust concentration through the sanding room that removes, and it is not enough to lie in having door curtain opening and bottom opening, and the negative pressure zone is inhomogeneous in the sanding room.

SUMMERY OF THE UTILITY MODEL

The technical problem solved by the utility model is as follows: the grinding negative pressure dust removal system has the advantages that a negative pressure area is formed at the bottom by utilizing the sedimentation rule of dust, outdoor air is supplemented from the top, and the damage to dust occupational diseases of operators is effectively avoided.

The technical scheme adopted by the utility model is as follows: the polishing negative pressure dust removal system comprises a polishing room, a dust removal system and an air supplement system; the dust removal system comprises a steel grating plate, a dust collection cover, a dust removal pipeline and a dust remover, wherein the steel grating plate is placed in a polishing area of a polishing room, the dust collection cover is installed at the lower part of the polishing room, the dust collection cover is communicated with the dust removal pipeline, and the dust removal pipeline is communicated with an air inlet of the dust remover. The air supplementing system comprises an air blower, an air supply pipeline, a fan cover and an air distribution device, the air distribution device is located at the top of the polishing room, the upper portion of the air distribution device is communicated with the fan cover, the fan cover is communicated with the air supply pipeline, and the air supply pipeline is connected with the air blower.

Further, in order to ensure the negative pressure of the polishing room and prevent dust from escaping out of the polishing room, the air supply quantity of the air supplementing system is 50-70% of the dedusting air quantity of the dedusting system.

Furthermore, in order to ensure the air flow and the negative pressure degree of the polishing room, the door of the polishing room is provided with an upper fan and a lower fan, and a hole is not formed in the negative pressure area at the lower part of the polishing room, so that the air outside the polishing room is prevented from being sucked into the polishing room.

Furthermore, in order to ensure that the grinding room supplies air uniformly, the upper part of the air distribution device is an air supply cavity. The top of the air supply cavity is uniformly distributed with air hoods, and the lower part of the air supply cavity is provided with closely-arranged small air supply pipes.

Further, the fan housing is of a box-type structure, flow guide holes are uniformly distributed in a partition plate between the fan housing and the air supply cavity, a spiral flow guide plate is welded and fixed on the partition plate, the height of the spiral flow guide plate is lower than that of the fan housing, and the height of the spiral flow guide plate is preferably 3/4-4/5 of the height of the fan housing.

Further, for guaranteeing the suitability of the environment of the polishing room, a sealed water tank is installed on the air supply pipeline and is communicated with an inlet pipe, an outlet pipe, an air inlet pipe and an air outlet pipe, the air outlet pipe is positioned at the top of the sealed water tank, and the air inlet pipe extends into the water of the sealed water tank. The air sent into the polishing room can utilize the temperature and atomization of water to adjust the humidity and temperature of the polishing room, and the effect of water vapor is utilized to accelerate dust removal.

Furthermore, in order to simplify the cleaning of dust collection, a dust collecting hopper and a spiral dust collector are arranged on the dust collection pipeline, the dust collecting hopper is positioned at the lower part of the dust collecting cover, and the dust collecting hopper is sealed except for the opening which is communicated with the dust collecting cover and the dust collection pipeline. The dust collecting hopper is used for gravity dust removal, and the spiral dust remover is used for spiral dust removal.

The utility model has the beneficial effects that: this system during operation forms the distribution of pressure of upper and lower burden in the room of polishing, has avoided forming the raise dust above the operative employee's waist, utilizes the humidity and the temperature of water adjustment room of polishing, for the operative employee provides a suitable operating space, adopts gravity to remove dust and spiral dust removal, has made things convenient for the clearance of metal dust, and box fan housing spiral air supply is favorable to the air supply in room of polishing even.

Drawings

FIG. 1 is a schematic structural view of example 1;

FIG. 2 is a schematic structural view of an air distribution device;

FIG. 3 is a schematic view of an improved structure of the air supplement system in the embodiment 2;

FIG. 4 is a schematic view showing a modified structure of a dust removing system in accordance with embodiment 3;

FIG. 5 is a front view of an improved structure of the fan housing in embodiment 4;

FIG. 6 is a top view of FIG. 5;

wherein: 1-blower, 2-air supply pipeline, 3-fan housing, 4-air distribution device, 5-polishing room, 6-steel grating, 7-dust collecting hood, 8-dust removing pipeline, 9-dust remover, 10-air supply cavity, 11-small air supply pipe, 12-sealed water tank, 13-water inlet pipe, 14-water, 15-water outlet pipe, 16-air inlet pipe, 17-air outlet pipe, 18-dust collecting hopper, 19-spiral dust remover, 20-spiral guide plate, 21-guide hole and 22-partition plate.

Detailed Description

Example 1.

FIG. 1 is a schematic structural diagram of this embodiment, and the negative pressure dust removal system of polishing includes dust pelletizing system and air supply system. The dust removal system comprises a steel grating 6, a dust hood 7, a dust removal pipeline 8, a dust remover 9 and the like, wherein the steel grating 6 is placed on the ground of a polishing area of an operator, the dust hood 7 is positioned at the lower part of the steel grating 6 and is communicated with the underground dust removal pipeline 8, and the dust removal pipeline 8 is communicated with an air inlet of the dust remover 9.

The air supplementing system comprises an air blower 1, an air supply pipeline 2, a fan cover 3 and an air distribution device 4, wherein the air distribution device 4 is located at the top of a polishing room 5, the upper part of the air distribution device 4 is communicated with the fan cover 3, the fan cover 3 is communicated with the air supply pipeline 2, and the air supply pipeline 2 is connected with the air blower 1. The blower 1 sends outdoor air into the air distribution device 4 through the air supply pipeline 2 and the air hood 3, and the air distribution device 4 can evenly distribute the outdoor air to the polishing room 5 from top to bottom. In order to prevent dust from escaping to the outside of the polishing room, the air supply quantity of the blower is less than the dedusting air quantity, generally, the air supply quantity is 50-70% of the dedusting air quantity, and micro negative pressure is formed in the polishing room.

When the grinding machine works, the dust removal system forms negative pressure at the lower part of the grinding room, the air supplement system forms positive pressure at the upper part of the grinding room, and air pressure is gradually reduced from top to bottom in the height direction of the grinding room to promote air to flow from top to bottom. The gravity of metal dust ground by the casting is consistent with the direction of the air flow, and the metal dust enters the dust removal pipeline 8 from the dust collection cover 7 under the action of the gravity and the air flow, so that upward floating cannot be formed. That is to say, do not produce the raise dust from above the operator's waist, avoided the hidden danger of operator's dust occupational disease.

The structure of the air distribution device 4 is shown in figure 2, an air supply cavity 10 is arranged at the upper part of the air distribution device, small air supply pipes 11 are densely arranged at the lower part of the air supply cavity 10, positive air pressure is formed in the air supply cavity 10, and then the small closely arranged air supply pipes 11 send air into a polishing room. In order to ensure the uniformity of the positive pressure of the air in the air supply cavity, the air covers 3 are uniformly distributed at the top of the air supply cavity 10. Similarly, the small air supply pipes 11 are uniformly distributed at the lower part of the air distribution device 4 to ensure that air is uniformly supplied from top to bottom in the polishing room 5, so that discomfort of local large air volume to an operator is avoided, and a relatively comfortable operating environment is provided.

In order to ensure the distribution of air pressure of the grinding room, a hole is not required to be formed in the negative pressure area at the lower part of the grinding room, and upper and lower double doors are preferably made for an operator and a casting to pass in and out.

Example 2.

In this embodiment, the air supply system of embodiment 1 is improved, and fig. 3 is a schematic view of a local structure of an air supply pipeline, in which a sealed water tank 12 is installed on the air supply pipeline 2, water 14 is stored in the sealed water tank 12, the sealed water tank 12 is communicated with an inlet pipe 13, an outlet pipe 15, an air inlet pipe 16 and an air outlet pipe 17, the air outlet pipe 17 is located at the top of the sealed water tank 12, the air inlet pipe 16 extends into the water, and valves are installed on the inlet pipe 13 and the outlet pipe 15. Under the condition that the temperature in summer is high, the temperature of the water in the sealed water tank 12 is lower than that of outdoor air, the fed air is cooled by water and carries part of water vapor to enter the polishing room 5, the temperature of the polishing room can be reduced, and a cool working environment is provided for operators. Meanwhile, the moisture can wrap the dust in the grinding room, so that the dust is gathered, and the falling and dust removal of the dust are facilitated. Under the condition that the temperature is lower in spring and winter, the water in the sealed water tank 12 can be replaced by electric furnace induction coil cooling water, and low-temperature outdoor air is heated by the cooling water and is sent into the polishing room, so that the polishing room is prevented from being dry in spring and winter, and the humidity of the polishing room is increased. In case of proper temperature in spring and autumn, the water in the sealed water tank 12 can be emptied. In a word, the water can be used for adjusting the working environment of the polishing room so as to ensure the comfort of an operator.

The air supply amount of the present embodiment is the same as that of embodiment 1, and the polishing room is kept at a micro negative pressure.

Example 3.

The embodiment improves the dust removal system of embodiment 1, and after the dust removal systems of the two embodiments are used for a long time, a large amount of large-particle metal dust which cannot be pumped away is inevitably collected in the underground dust removal pipeline 8. In order to ensure the ventilation volume of the dust removing pipeline and the smoothness of the dust removing pipeline 8, the steel grating 6 on the ground is moved away during cleaning, and the collected metal dust is manually cleaned from the dust collecting cover 7.

The difference between this embodiment and embodiment 1 is mainly in the dust removal system, and this embodiment can simplify the amount of the metal dust collection cleaning work of the dust removal pipeline in embodiment 1. The dust collecting hopper 18 is arranged at the lower part of the dust collecting cover 7, and the dust collecting hopper 18 is sealed except for the opening communicating the dust collecting cover 7 and the dust removing pipeline 8. The cross-sectional area of the dust hopper 18 is larger than that of the dust removal pipeline 8, gravity dust removal is formed in the dust hopper 18, and the dust hopper 18 is periodically lifted out of the pit for cleaning. Meanwhile, a spiral dust remover 19 is arranged in front of the dust remover 9, and dust is removed again in an air flow spiral centrifugal mode, so that the dust removing pressure of the dust remover 9 is reduced, and the maintenance frequency and the cost of the dust remover 9 are reduced.

Because the dust pelletizing system restriction of embodiment 1 and embodiment 2, the negative pressure dust pelletizing system of polishing is applicable to the transformation in casting workshop of polishing, perhaps is applicable to the less room of polishing of volume of polishing, and this embodiment improves dust pelletizing system, is applicable to mass production, perhaps polishes the great room of polishing of volume.

Example 4.

The difference between this embodiment and the above three embodiments is the structural form of the fan housing 3, as shown in fig. 5 and fig. 6, the fan housing 3 is changed into an integral box structure, and is separated from the air supply cavity 10 of the air distribution device 4 by a partition plate 22, and a uniform flow guide hole 21 is processed on the partition plate 22. The spiral guide plate 20 is welded and fixed inside the fan housing 3, and the height of the spiral guide plate 20 is slightly lower than that of the fan housing 3, preferably 3/4-4/5 of the height of the fan housing 3.

The wind that air supply pipeline 2 sent into gets into fan housing 3 and divides into two parts, and partly flows along spiral guide plate 20 spiral, gets into air supply chamber 10 through water conservancy diversion hole 21, and partly flows through the space between 3 roofs of fan housing and the spiral guide plate 20 for the position air supply of bight no spiral wind, and this structure is favorable to guaranteeing that the wind pressure in the air supply chamber 10 is even to guarantee the whole even air supply of polishing room.

In addition, the fan housing structure of this embodiment has reduced the height of fan housing greatly, practices thrift the high space in workshop, is favorable to the arrangement of workshop pipeline and cable.

At present, the applicant has transformed the grinding room of small pipe fittings into the form of the utility model, and although the investment is increased, the workshop is kept clean, no dust is in the grinding room, the environment protection department is ensured, and the feedback of staff is good.

According to the utility model, the pressure distribution of positive and negative pressure in the polishing room is formed, so that the uniform air supply of the polishing room is ensured, the dust formation above the waist of an operator is avoided, and the occupational disease of dust is avoided. The humidity of the polishing room is adjusted by water, the temperature is properly adjusted, a more comfortable operation space is provided for an operator, and the improved dust removal system is convenient for cleaning metal dust.

Claims

1. The utility model provides a negative pressure dust pelletizing system polishes which characterized in that: comprises a grinding room (5), a dust removal system and an air supplement system; the dust removal system comprises a steel grating plate (6), a dust collection cover (7), a dust removal pipeline (8) and a dust remover (9), wherein the steel grating plate (6) is placed in a polishing area of a polishing room (5), the dust collection cover (7) is installed at the lower part of the steel grating plate, the dust collection cover (7) is communicated with the dust removal pipeline (8), and the dust removal pipeline (8) is communicated with an air inlet of the dust remover (9); the air supplementing system comprises an air blower (1), an air supply pipeline (2), a fan cover (3) and an air distribution device (4), wherein the air distribution device (4) is located at the top of a polishing room (5) and communicated with the fan cover (3) at the upper part, the fan cover (3) is communicated with the air supply pipeline (2), and the air blower (1) is connected with the air supply pipeline (2).

2. The negative pressure dust removal system for grinding as claimed in claim 1, wherein: the air supply quantity of the air supplementing system is 50-70% of the dedusting air quantity of the dedusting system.

3. The negative pressure dust removal system for grinding as claimed in claim 1, wherein: the door of the polishing room (5) is an upper door and a lower door, and no hole is formed in the negative pressure area at the lower part of the polishing room (5).

4. The negative pressure dust removal system for grinding as claimed in claim 1, wherein: the upper part of the air distribution device (4) is an air supply cavity (10), the top of the air supply cavity (10) is uniformly distributed with air hoods (3), and the lower part of the air supply cavity is a close-packed small air supply pipe (11).

5. The negative pressure dust removal system for grinding as claimed in claim 4, wherein: the wind shield (3) is of a box-type structure, flow guide holes (21) are uniformly distributed in a partition plate (22) between the wind shield (3) and the air supply cavity (10), a spiral flow guide plate (20) is fixedly welded on the partition plate (22), and the height of the spiral flow guide plate (20) is lower than that of the wind shield (3).

6. The negative pressure dust removal system for grinding as claimed in claim 5, wherein: the height of the spiral guide plate (20) is 3/4-4/5 of the height of the fan cover (3).

7. The negative pressure dust removal system for grinding as claimed in claim 1, wherein: install sealed water tank (12) on blast pipeline (2), this sealed water tank (12) intercommunication inlet tube (13), outlet pipe (15), air-supply line (16) and play tuber pipe (17), it is located sealed water tank (12) top to go out tuber pipe (17), air-supply line (16) stretch into the aquatic of sealed water tank (12).

8. The negative pressure dust removal system for grinding as claimed in claim 1, wherein: the dust removal pipeline (8) is provided with a dust collection hopper (18) and a spiral dust remover (19), the dust collection hopper (18) is positioned at the lower part of the dust collection cover (7), and the dust collection hopper (18) is sealed except for an opening for communicating the dust collection cover (7) with the dust removal pipeline (8).