CN214972944U - Smoke exhauster for manufacturing integrated circuit - Google Patents

Abstract

The utility model belongs to the field of waste gas exhausting devices, in particular to a smoke exhauster for manufacturing integrated circuits, which comprises a smoke exhauster body, wherein the smoke exhauster body is sequentially connected with a smoke inlet, a smoke control port and a smoke outlet through a smoke exhaust pipe; a support rod is fixedly connected between the smoke control port and the smoke outlet along the radial direction of the smoke exhaust pipe, the middle part of the support rod is connected with a driving motor, and an output shaft of the driving motor is connected with a fan blade in a transmission way; an annular recovery box is arranged at the position of the smoke control opening and is attached to the inner wall of the smoke exhaust pipe; the middle part of the inner lower ring surface of the annular recovery box, which is close to the smoke inlet, is provided with a first filter layer, and the middle part of the inner upper ring surface of the annular recovery box, which is close to the smoke outlet, is provided with a second filter layer; the middle part of the outer upper ring surface of the annular recovery box close to the smoke outlet is provided with a third filter layer which is an arc surface protruding towards the smoke outlet. The scheme can filter metal smoke, separates the metal smoke from contacting with the motor, reduces potential safety production hazards caused by the contact, and reduces the maintenance cost of the smoke exhaust fan.

Description

Smoke exhauster for manufacturing integrated circuit

Technical Field

The utility model belongs to the exhaust gas device field, concretely relates to smoke ventilator for preparation integrated circuit.

Background

The welding materials adopted for welding the integrated circuit board in industry include gold silicon alloy, gold tin alloy, indium lead silver alloy, lead tin silver alloy and the like. Metals such as lead, tin and the like are continuously gasified in the welding process to generate metal smoke, and the harm caused by the metal smoke is reduced by adopting a mode of additionally arranging a smoke exhaust fan between welding.

A motor is usually installed in the smoke exhaust machine, an output shaft of the motor is connected with a fan blade in a transmission way, and when metal smoke passes through the motor, part of the metal smoke enters the motor and is cooled and solidified to be integrated with parts in the motor; part of the metal smoke is solidified at the joint of the motor output shaft and the fan blade, so that the use performance of the motor is influenced, certain production potential safety hazards are caused, and the loss cost of the exhaust fan is increased.

Therefore, a smoke exhaust machine for manufacturing the integrated circuit is needed to be provided, so that the influence of metal smoke on the smoke exhaust machine in the smoke exhaust process is avoided, and the maintenance cost of the smoke exhaust machine is reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model provides a following technical scheme: a smoke exhaust machine for manufacturing an integrated circuit comprises a smoke exhaust machine body, wherein the smoke exhaust machine body is sequentially connected with a smoke inlet, a smoke control port and a smoke outlet through a smoke exhaust pipe; the smoke control port is arranged close to the smoke inlet, a support rod is fixedly connected between the smoke control port and the smoke outlet along the radial direction of the smoke exhaust pipe, the middle part of the support rod is connected with a driving motor, and an output shaft of the driving motor is connected with a fan blade in a transmission way; an annular recovery box is arranged at the position of the smoke control port, the annular recovery box has a double-layer structure, and the middle part of the annular recovery box is a cavity; the annular recovery box is attached to the inner wall of the smoke exhaust pipe; the middle part of the inner lower ring surface of the annular recovery box, which is close to the smoke inlet, is connected with a first filter layer, and the middle part of the inner upper ring surface of the annular recovery box, which is close to the smoke outlet, is connected with a second filter layer; the middle part of the outer upper ring surface of the annular recovery box close to the smoke outlet is connected with a third filter layer which is an arc surface protruding towards the smoke outlet. The metal smoke passes through the filter layer, one part of the metal smoke is absorbed by the filter layer, and the other part of the metal smoke enters the annular recovery box after being guided by the arc-shaped surface.

Furthermore, a refrigerating layer is arranged at the bottom of the annular recovery box, and a refrigerant is placed in the refrigerating layer. And the metal smoke entering the annular recovery box is solidified when meeting cold and is left in the annular recovery box to wait for recovery.

Further, the refrigerant is dry ice or liquid ammonia.

Further, the second filter layer is an arc-shaped surface protruding towards the smoke outlet. The arc-shaped second filter layer protruding towards the smoke outlet guides and discharges the metal smoke into the annular recovery box.

Furthermore, the inner side surface of the annular recovery box is of a grid structure. The metal smoke enters the annular recovery box through the grid structure under the guiding action of the second filtering surface.

Further, the second filter layer has a double-layer screen structure. The double-layer screen structure absorbs the metal smoke.

Furthermore, the double-layer screen structure is a steel layer close to the smoke inlet and a carbon layer close to the smoke control port. The steel layer provides support and the carbon layer absorbs metal fumes.

Furthermore, a timing switch is arranged on the outer side of the smoke exhaust pipe, and the input end of the driving motor is connected with a power supply through the timing switch. The welding operation is not carried out constantly, and in order to avoid the drive motor from generating heat after long-time operation, the power-on and power-off time of the drive motor is set through a television switch according to the time proportion and the frequency of welding carried out by the workbench.

The driving motor is connected with a power supply to rotate, the fan blade which is connected with the output shaft of the driving motor in a transmission way is driven to rotate, airflow flowing from the smoke inlet to the smoke outlet is generated, and the airflow sucks metal smoke nearby the smoke inlet. The metal smoke entering the smoke inlet enters the first smoke filtering layer, and part of the metal smoke is absorbed by the first smoke filtering layer; one part continues to move towards the smoke outlet. The smoke reaching the second smoke filtering layer partially passes through the grid structure and enters the annular recovery box under the guiding action of the arc-shaped surface of the second smoke filtering layer; a part of the smoke is absorbed by the second smoke filtering layer; the smoke reaching the third smoke filtering layer enters the annular recovery box under the guiding action of the third filtering layer, and the smoke entering the annular recovery box is cooled under the action of a refrigerant at the bottom of the annular recovery box to form solid metal to wait for recovery; another part of the metal smoke is absorbed by the third smoke filter layer.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the metal smoke is filtered and blocked, so that the metal smoke is prevented from entering the equipment, the potential safety hazard of production is reduced, and the service life of the equipment is prolonged;

2. and heavy metals are recycled, so that pollution is avoided.

3. Simple structure and low manufacturing cost.

Drawings

Fig. 1 is a schematic diagram of the basic structure of embodiment 1 of the present invention.

Reference numerals in the drawings indicate: a smoke exhaust pipe-1, a smoke inlet-2, a smoke control port-3, a smoke outlet-4, a first filter layer-5, a second filter layer-6, a third filter layer-7, a lower ring surface-8 in the annular recovery box, an upper ring surface-9 in the annular recovery box, an upper ring surface-10 outside the annular recovery box, an annular recovery box-11, a refrigeration layer-12, a grid structure-13, a support rod-14, a driving motor-15 and a fan blade-16.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention.

Examples

Referring to the attached drawing 1, the embodiment provides a smoke ventilator for manufacturing an integrated circuit, which comprises a smoke ventilator body, wherein the smoke ventilator body is sequentially connected with a smoke inlet 2, a smoke control port 3 and a smoke outlet 4 from bottom to top through a smoke exhaust pipe 1 which is vertically arranged; the smoke inlet 2 is in a horn shape and is used for aligning with a welding workbench. A supporting rod 14 is fixedly connected between the smoke control port 3 and the smoke outlet 4, the middle part of the supporting rod 14 is fixedly connected with a driving motor 15 through a screw, and an output shaft of the driving motor 15 is connected with a fan blade 16 in a transmission way; the smoke control port 3 is arranged close to the smoke inlet 2. The inner side of the smoke control port 3 is fixedly connected with an annular recovery box 11 through a screw, the annular recovery box has a double-layer structure, and the middle part is a cavity. The outer side surface of the annular recovery box 11 is tightly attached to the inner wall of the smoke exhaust pipe 1 through 3M glue. The lower ring surface 8 in the ring-shaped recovery box 11 is connected with a first filter layer 5 through a screw, the upper ring surface 9 in the ring-shaped recovery box 11 is connected with a curved second filter layer 6 through a screw, the outer upper ring surface 10 of the ring-shaped recovery box 11 is connected with a curved third filter layer 7 through a screw, and the second filter layer 6 and the third filter layer 7 are both convex upwards. The first filter layer 5, the second filter layer 6 and the third filter layer 7 are all of a double-layer screen structure, the lower layer is made of a steel mesh for supporting, and the upper layer is made of a high-temperature-resistant carbon mesh.

Under the power-on state, the driving motor 15 runs to drive the fan blade 16 to rotate, and airflow from bottom to top is generated in the smoke exhaust pipe 1. The worker welds the electronic components to the integrated circuit board, and the metal fumes generated therebetween are sucked into the smoke inlet 2 by the air flow. The smoke passes through the first filter layer 5, and part of the smoke is absorbed by the carbon net of the first filter layer 5; the smoke reaching the second filter layer 6 through the first filter layer 5 is partially absorbed by the carbon net of the second filter layer 6, and is partially impacted by the arc-shaped surface of the second filter layer 6 to change the movement direction, the inner side surface of the annular recovery box 11 is provided with a grid structure 13, and the smoke passes through the grid structure 13 and enters the annular recovery box 11; the smoke passing through the second filter layer 6 impacts the third filter layer 7 and enters the annular recovery box 11 under the guiding action of the arc-shaped surface of the third filter layer 7. The bottom of the annular recovery box 11 is provided with a refrigerating layer 12, a dry ice bag is placed in the refrigerating layer 12, and metal smoke falls into the annular recovery box 11 and condenses at the bottom of the annular recovery box 11 when meeting cold solidification.

The first filter layer 5, the second filter layer 6 and the third filter layer 7 are connected with the annular recovery box 11 through screws, so that the cleaning or the replacement is convenient.

The metal smoke entering the smoke exhaust machine is basically and completely isolated from the driving motor 15 through the multi-layer filtering, absorbing and guiding functions of the first filtering layer 5, the second filtering layer 6 and the third filtering layer 7 of the smoke exhaust machine, so that the metal smoke is effectively prevented from entering the driving motor 15 or being solidified in a connecting port between the driving motor 15 and the fan blade 16, the potential safety hazard caused by the metal smoke is reduced, and the maintenance cost of the smoke exhaust machine is reduced.

The outer side of the smoke exhaust pipe 1 is provided with a timing switch, and the input end of the driving motor 15 is connected with a power supply through the timing switch. According to statistics, the actual welding time of each welding workshop accounts for 50% of the total operation time, the continuous welding time of each welding workshop is about 5 minutes, the timing switch is arranged to be powered on and powered off once every 5 minutes, and the driving motor 15 is suspended for 5 minutes to dissipate heat every 5 minutes when running, so that the driving motor 15 is ensured to fully dissipate heat, and the energy conservation and emission reduction of the driving motor 15 are realized.

The above description is only for the embodiments of the present invention, and the common general knowledge of the known specific structures and characteristics in the schemes is not described herein too much, and those skilled in the art will know all the common technical knowledge in the technical field of the present invention before the application date or the priority date, can know all the prior art in this field, and have the ability to apply the conventional experimental means before this date, and those skilled in the art can combine their own ability to perfect and implement the schemes, and some typical known structures or known methods should not become obstacles for those skilled in the art to implement the present application. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (8)

1. A smoke exhaust machine for manufacturing an integrated circuit comprises a smoke exhaust machine body, wherein the smoke exhaust machine body is sequentially connected with a smoke inlet, a smoke control port and a smoke outlet through a smoke exhaust pipe; the smoke control port is arranged close to the smoke inlet, a support rod is fixedly connected between the smoke control port and the smoke outlet along the radial direction of the smoke exhaust pipe, the middle part of the support rod is connected with a driving motor, and an output shaft of the driving motor is connected with a fan blade in a transmission way; the method is characterized in that: an annular recovery box is arranged at the position of the smoke control port, the annular recovery box has a double-layer structure, and the middle part of the annular recovery box is a cavity; the annular recovery box is attached to the inner wall of the smoke exhaust pipe; the middle part of the inner lower ring surface of the annular recovery box, which is close to the smoke inlet, is connected with a first filter layer, and the middle part of the inner upper ring surface of the annular recovery box, which is close to the smoke outlet, is connected with a second filter layer; the middle part of the outer upper ring surface of the annular recovery box close to the smoke outlet is connected with a third filter layer which is an arc surface protruding towards the smoke outlet.

2. The smoke exhauster for manufacturing the integrated circuit as claimed in claim 1, wherein: the bottom of the annular recovery box is provided with a refrigerating layer, and a refrigerant is placed in the refrigerating layer.

3. The smoke exhauster for manufacturing the integrated circuit as claimed in claim 2, wherein: the refrigerant is dry ice and liquid ammonia.

4. The smoke exhauster for manufacturing the integrated circuit as claimed in claim 1, wherein: the second filter layer is an arc-shaped surface protruding towards the smoke outlet.

5. The smoke exhauster for manufacturing the integrated circuit as claimed in claim 1, wherein: the inner side surface of the annular recovery box is of a grid structure.

6. The smoke exhauster for manufacturing the integrated circuit as claimed in claim 1, wherein: the first filtering layer, the second filtering layer and the third filtering layer are of double-layer screen structures.

7. The smoke exhaust machine for manufacturing integrated circuits according to claim 6, wherein: the double-layer screen structure is a steel layer close to the smoke inlet and a carbon layer close to the smoke control port.

8. The smoke exhauster for manufacturing the integrated circuit as claimed in claim 1, wherein: a timing switch is arranged on the outer side of the smoke exhaust pipe, and the input end of the driving motor is connected with a power supply through the timing switch.

Images