Dust removal device of grinding machine

Abstract

The dust removal device comprises a dust collection pipe, an air inlet cylinder, an air outlet cylinder and a filter unit which are fixedly connected to the bottom of a protective cover of the grinding machine in sequence, the protective cover, the dust collection pipe, the air inlet cylinder, the air outlet cylinder and the filter unit are communicated in sequence, a nozzle is fixedly connected in the air outlet cylinder, an outlet of the nozzle faces the filter unit, and the filter unit is fixedly connected with the dust collection pipe. A compressed air inlet pipe is fixedly connected to the air outlet cylinder in a penetrating mode and fixedly communicates with the nozzle. The dust removal device can be used for removing dust when the grinding machine works by utilizing the existing compressed air system in a workshop, so that vacuum negative pressure equipment does not need to be arranged, the structure is simple, and the production cost can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to grinding equipment technical field especially relates to a grinding machine dust collector. BACKGROUND

[0002] Grinding machine is a kind of common production equipment in workshop, is used to polish various parts, tools and blank.For preventing the dust and grinding scrap generated during the operation of grinding machine from polluting the surrounding environment or being inhaled by operator to cause respiratory diseases, the current grinding machine is usually equipped with dust collection device.Dust collection device sucks away the dust and grinding scrap generated during grinding through hose, to avoid polluting the environment.Because the suction pipe of dust collection device is usually made of rubber or plastic, and the temperature of the grinding scrap just generated during grinding is very high, the suction pipe can be easily burnt out.In addition, because there is usually only compressed air pipeline in workshop, without negative pressure equipment, the negative pressure equipment for dust removal needs to be equipped separately, thereby increasing production cost.

[0003] Patent with publication number CN204366747U discloses a grinding machine dust collector, which is arranged at the bottom end of grinding machine workbench, and comprises dust removal shell, air draught device and dust recovery device.Because dust removal device needs to be additionally equipped with air draught device, it will increase the investment of production cost, also increase the failure rate of equipment, and needs to be regularly maintained and maintained.The dust removal device disclosed by patent with publication number CN201693458U also needs to be additionally equipped with fan, so it also has the same problem. SUMMARY

[0004] The utility model provides a grinding machine dust collector to solve the problem that the dust removal device of current grinding machine needs to be equipped with separate negative pressure equipment to suck away the dust and grinding scrap generated during the operation of grinding machine, and increases production cost.

[0005] To solve the above technical problem, the utility model adopts the technical scheme of

[0006] A grinding machine dust collector, comprising dust collection pipe, air inlet cylinder, air outlet cylinder and filter unit fixedly connected in sequence at the bottom of the shroud of grinding machine, the shroud, dust collection pipe, air inlet cylinder, air outlet cylinder and filter unit are communicated in sequence, a nozzle is fixedly connected in the air outlet cylinder, the outlet of the nozzle faces the filter unit, a compressed air inlet pipe is fixedly connected through the air outlet cylinder, and the compressed air inlet pipe is fixedly communicated with the nozzle.

[0007] Further, a conical pipe is fixedly connected in the air outlet cylinder, the inner diameter of one end of the conical pipe close to the air inlet cylinder is small, and the inner diameter of the other end is large, and the nozzle is located in the conical pipe.

[0008] Further, the filter unit comprises a vertical closed cylinder, an air outlet pipe fixedly connected to the top of the cylinder, an air inlet pipe fixedly connected to the cylinder near the top in tangential direction, and a dust falling pipe fixedly connected to the bottom of the cylinder, the air inlet pipe, the air outlet pipe and the dust falling pipe being communicated with the inside of the cylinder respectively, and the air inlet pipe being communicated with the air outlet pipe.

[0009] Further, the filter unit comprises a closed filter box and a drawer arranged in the filter box and capable of being pulled out from one side of the filter box, the bottom of the drawer being a steel wire mesh, filter cotton being laid on the steel wire mesh in the drawer, an air outlet hole being formed in the bottom of the filter box, and the top of the filter box being communicated with the dust collecting pipe.

[0010] Further, the lower part of the cylinder is conical with the diameter being larger at the top and smaller at the bottom, and the dust falling pipe is located at the center of the bottom of the cylinder.

[0011] Further, the dust shield is provided with a dust discharging port in the tangential direction corresponding to the grinding wheel piece of the grinding machine and the worktable of the grinding machine, and the end of the dust collecting pipe away from the air inlet pipe corresponds to the dust discharging port.

[0012] Further, the bottom of the dust falling pipe is detachably connected with a dust collecting box.

[0013] The positive effects of the present application are as follows:

[0014] 1. The dust collecting pipe, the air inlet pipe, the air outlet pipe and the filter unit are arranged, a nozzle is arranged in the air outlet pipe, and the nozzle is connected with the workshop compressed air pipeline. Therefore, the existing compressed air system of the workshop can be used to realize dust removal during the operation of the grinding machine, so that a vacuum negative pressure device is not needed, and the production cost is reduced.

[0015] 2. The filter unit is divided into two stages, the first stage removes most of the particles with large specific gravity through the conical cylinder, and the second stage filters the very small dust with small specific gravity through the filter cotton, so that the service life of the filter cotton is prolonged, and the replacement period is reduced.

[0016] 3. Since the present application does not have electrical components and does not have components that rotate and move relative to each other, regular maintenance and maintenance are not needed, and only the dust on the dust collecting box at the bottom of the cylinder and the filter cotton needs to be cleaned regularly. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic view of the present application;

[0018] Figure 2is a structural schematic diagram of the inside of the air inlet cylinder and the air outlet cylinder;

[0019] Figure 3 is a schematic diagram of the inside of the filter box;

[0020] in the figure:

[0021] 1, drawer; 2, filter box; 3, air duct; 4, shroud; 5, grinding wheel piece; 6, dust collection pipe; 7, air inlet cylinder; 8, compressed air inlet pipe; 9, air outlet cylinder; 10, dust collection box; 11, cylinder body; 12, dust fall pipe; 13, nozzle; 14, conical pipe; 15, filter cotton; 16, air outlet hole; 17, air outlet pipe; 18, air inlet pipe; 19, workbench; 20, dust outlet. DETAILED DESCRIPTION

[0022] Example 1

[0023] As shown in Figure 1 and Figure 2 , the shroud 4 of the grinding machine covers the grinding wheel piece 5 of the grinding machine, the shroud 4 has a gap on the right side, the grinding machine is provided with a workbench 19 at the bottom of the gap, and the outer circle of the grinding wheel piece 5 is a working surface. In use, one end of the part to be polished is placed on the workbench 19, and then the part is pushed to the left, so that the part can be polished.

[0024] The shroud 4 is provided with a dust outlet 20 in the tangential direction corresponding to the grinding wheel piece 5 and the workbench 19 (in the Figure 1 , the dust outlet 20 is arranged at the lower left of the shroud 4), a kind of grinding machine dust removal device, including dust collection pipe 6, air inlet cylinder 7, air outlet cylinder 9 and filter unit fixedly connected in sequence from right to left at the bottom of shroud 4, the material of dust collection pipe 6, air inlet cylinder 7 and air outlet cylinder 9 is metal. The right end of the dust collection pipe 6 is inserted into the dust outlet 20 and corresponds to the shape of the dust outlet 20. The shroud 4, dust collection pipe 6, air inlet cylinder 7, air outlet cylinder 9 and filter unit are in sequence communication, the air inlet cylinder 7 and the air outlet cylinder 9 are coaxial and are arranged in horizontal direction, the left end of the air inlet cylinder 7 is a circular truncated cone with diameter decreasing from right to left.

[0025] The air outlet cylinder 9 is fixedly connected with a 7-shaped nozzle 13, the outlet of the nozzle 13 is located at the center of the air outlet cylinder 9 and extends horizontally to the left, the lower side wall of the air outlet cylinder 9 is fixedly connected with a compressed air inlet pipe 8, the compressed air inlet pipe 8 is fixedly communicated with the nozzle 13, and the outer end of the compressed air inlet pipe 8 is connected with the compressed air pipeline of the workshop.

[0026] When the abrasive wheel piece 5 rotates, the dust and grinding powder generated during grinding is thrown to the dust discharging port 20 along the tangential direction. Compressed air is sent to the nozzle 13 through the compressed air inlet pipe 8, and then is sprayed out at high speed to the left through the nozzle 13. According to the principle of jet flow, the air around the nozzle 13 is driven to flow to the left, so that a negative pressure is formed, and a wind flowing from right to left is formed in the dust collecting pipe 6. Under the driving of the wind, the dust and grinding powder at the dust discharging port 2 are sent to the filtering unit for filtering, so as to prevent the dust and grinding powder from polluting the surrounding environment.

[0027] The dust removal device for a grinding machine has the advantages that the structure is simple, dust removal during the working of the grinding machine can be realized by using the existing compressed air system in the workshop, and thus a vacuum device is not needed, and the production cost is reduced.

[0028] In addition, after the compressed air is sprayed into the air outlet cylinder 9 at high speed through the nozzle 13, the temperature of the air flow is reduced due to the volume expansion, so that the temperature of the dust and grinding powder is reduced, and damage of the filtering unit caused by the dust and grinding powder is prevented.

[0029] The air outlet cylinder 9 is fixedly connected with a conical pipe 14 with a large inner diameter on the left and a small inner diameter on the right along the axial direction of the air outlet cylinder 9, the nozzle 13 is located in the conical pipe 14, the lower end of the nozzle 13 is hexagonal at the connecting position with the conical pipe 14, so that the nozzle 13 is prevented from rotating during working, and the direction of the air flow sprayed out by the nozzle 13 is prevented from changing, and the lower end of the nozzle 13 is threadedly connected with the compressed air inlet pipe 8. After the conical pipe 14 is arranged, the speed of the air flow sprayed out is faster.

[0030] Example 2

[0031] The difference between the embodiment and example 1 is that:

[0032] The filtering unit comprises a vertical closed cylinder body 11, an air outlet pipe 17 fixedly connected through the top of the cylinder body 11, an air inlet pipe 18 fixedly connected in the tangential direction near the top of the cylinder body 11, and an ash falling pipe 12 fixedly connected at the bottom of the cylinder body 11, the air inlet pipe 18, the air outlet pipe 17 and the ash falling pipe 12 are respectively communicated with the inside of the cylinder body 11, and the air inlet pipe 18 is communicated with the air outlet cylinder 9.

[0033] The upper part of the cylinder body 11 is a cylindrical shape, and the lower part is a conical shape with a large diameter on the top and a small diameter on the bottom, and the ash falling pipe 12 is located at the center of the bottom of the cylinder body 11. The bottom of the ash falling pipe 12 is detachably connected with a dust collecting box 10 through threads.

[0034] The dust and grinding dust flow into the air inlet pipe 18 from the air outlet pipe 9 at high speed, then enter into the cylinder 11 in tangential direction, and then rotate spirally in the cylinder 11. The particles with large specific gravity are thrown to the inner wall of the cylinder 11 under the centrifugal force, and fall to the bottom of the cylinder 11 under the gravity, and then are collected into the dust collecting box 10 through the lower part of the cylinder 11. The dust collecting box 10 is taken out periodically, and the particles in the dust collecting box 10 can be cleaned.

[0035] Embodiment 3

[0036] In combination Figure 3 The embodiment is different from the embodiment 2 in that:

[0037] The filter unit comprises a closed rectangular filter box 2 and a drawer 1 arranged in the filter box 2 and capable of being pulled out from the left side of the filter box 2. The bottom of the drawer 1 is a steel wire mesh, and filter cotton 15 is laid on the steel wire mesh in the drawer 1. Angle irons are respectively welded in the filter box 2 at positions corresponding to the front and back sides of the drawer 1, and the drawer 1 is supported on the two angle irons. When the drawer 1 is pulled, the drawer 1 slides on the angle irons. The bottom of the filter box 2 is uniformly provided with air outlet holes 16, and the top of the filter box 2 is communicated with the dust collecting pipe 6.

[0038] An air guide pipe 3 is connected between the air outlet pipe 17 and the top of the filter box 2, and the air guide pipe 3 is communicated with the top of the filter box 2. The dust with small specific gravity flows out from the air outlet pipe 17, and then is sent into the filter box 2 through the air outlet pipe 17, and then is filtered by the filter cotton 15 and discharged from the air outlet holes 16. The drawer 1 is pulled out, and the dust can be cleaned or the filter cotton 15 can be replaced.

[0039] Therefore, the dust and grinding dust generated by the grinding wheel piece 5 during work are removed in two steps, only a small amount of dust is filtered by the filter cotton, and the service life of the filter cotton 15 is prolonged.

[0040] The above-described embodiments are described in detail and concretely, express the preferred embodiments of the utility model, are used only for explaining the technical thought and characteristics of the utility model, and its purpose is to enable the person skilled in the art to understand the content of the utility model and to implement it, but are not limited to the utility model, and the patent range of the utility model cannot be limited to the embodiments, that is, any equivalent change or modification of the utility model disclosed by the utility model is still within the patent range of the utility model, and the local improvement of the system and the change between the subsystems, the transformation, etc. are still within the patent range of the utility model.

Claims

1. A dust removing device for a grinder, characterized by comprising: The dust collecting pipe (6), the air inlet tube (7), the air outlet tube (9) and the filtering unit are sequentially fixedly connected at the bottom of the shroud (4) of the grinding machine, and sequentially communicate with each other, the nozzle (13) is fixedly connected in the air outlet tube (9), the outlet of the nozzle (13) faces the filtering unit, the compressed air inlet pipe (8) is fixedly connected through the air outlet tube (9), and the compressed air inlet pipe (8) fixedly communicates with the nozzle (13).

2. The dust removal device for a grinding machine according to claim 1, characterized in that, The conical pipe (14) is fixedly connected in the air outlet tube (9), one end of the conical pipe (14) near the air inlet tube (7) has a small inner diameter, the other end has a large inner diameter, and the nozzle (13) is located in the conical pipe (14).

3. The dust removal device for a grinding machine according to claim 1, wherein The filtering unit comprises a vertical closed cylinder (11), an air outlet pipe (17) fixedly connected through the top of the cylinder (11), an air inlet pipe (18) fixedly connected in a tangential direction near the top of the cylinder (11) and an ash falling pipe (12) fixedly connected at the bottom of the cylinder (11), the air inlet pipe (18), the air outlet pipe (17) and the ash falling pipe (12) respectively communicate with the inside of the cylinder (11), and the air inlet pipe (18) communicates with the air outlet tube (9).

4. The dust removal device for a grinding machine according to claim 1 or 2, characterized in that, The filtering unit comprises a closed filtering box (2) and a drawer (1) arranged in the filtering box (2) and capable of being pulled out from one side of the filtering box (2), the bottom of the drawer (1) is a steel wire mesh, filter cotton (15) is laid on the steel wire mesh in the drawer (1), the bottom of the filtering box (2) is provided with an air outlet hole (16), and the top of the filtering box (2) communicates with the dust collecting pipe (6).

5. The dust removal device for a grinding machine according to claim 3, wherein The lower part of the cylinder (11) is a circular cone with a large diameter at the top and a small diameter at the bottom, and the ash falling pipe (12) is located at the center of the bottom of the cylinder (11).

6. The dust removal device for a grinding machine according to claim 1, wherein The shroud (4) is provided with a dust discharging port (20) in the tangential direction corresponding to the grinding wheel sheet (5) of the grinding machine and the workbench (19) of the grinding machine, and one end of the dust collecting pipe (6) away from the air inlet tube (7) corresponds to the dust discharging port (20).

7. The dust removal device for a grinding machine according to claim 3, wherein The bottom of the ash falling pipe (12) is detachably connected with a dust collecting box (10).

Images