Waste gas filter of die casting machine

Abstract

The utility model relates to a waste gas filter of a die-casting machine, which belongs to the field of waste gas filtration and comprises a filter box, a gas inlet pipe fixedly connected to the left side of the filter box and a gas outlet pipe fixedly connected to the right side of the filter box, a partition plate is fixedly connected between the inner top wall and the inner bottom wall of the filter box, and the inner side of the partition plate is fixedly connected with a connecting pipe. A filtering assembly for filtering waste gas is arranged at the top of the filtering box; the filter assembly comprises a motor fixedly connected to the top of the filter box, a connecting rod fixedly connected to an output shaft of the motor, a separation fan fixedly connected to the outer side of the connecting rod, and a first metal filter screen and a second metal filter screen which are fixedly connected between the inner top wall and the inner bottom wall of the filter box. According to the waste gas filter of the die-casting machine, the separation fan is driven by the motor to rotate at a high speed, large-particle dust and oil drops in waste gas are effectively separated through centrifugal force, and medium and small particles can be efficiently intercepted by combining the double filtering effects of the first metal filter screen and the second metal filter screen.

Description

TECHNICAL FIELD

[0001] The utility model relates to a die casting machine's waste gas filter belongs to waste gas filtration field. BACKGROUND

[0002] In the industrial production process, as important forming equipment, die casting machine is widely used in the manufacturing field such as automobile parts, electronic product shell etc. However, die casting machine will produce a large amount of harmful substances containing oil mist, dust etc. in the operation process, and these waste gas will not only cause pollution to the environment if not treated directly, but also will constitute the threat to the health of operating personnel.

[0003] In order to solve the above problem, a series of filtering devices for die casting machine waste gas appear in the market. But these devices are mostly complex structure, and the operation is tedious, and the dust cleaning effect is not ideal, leading to frequent filter screen blockage, affecting production efficiency and waste gas treatment effect. Therefore, it is particularly important to develop a kind of die casting machine waste gas filter with simple structure, high filtration efficiency and convenient dust cleaning. UTILITY MODEL CONTENTS

[0004] (I) technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a kind of die casting machine's waste gas filter, with high efficiency filtration, intelligent dust cleaning and other advantages.

[0006] (II) technical scheme

[0007] To realize the above-mentioned high efficiency filtration, intelligent dust cleaning purposes, the utility model provides the following technical scheme: a kind of die casting machine's waste gas filter, including filter box, fixedly connected with the air inlet pipe of filter box left side and fixedly connected with the air outlet pipe of filter box right side, the inner top wall and inner bottom wall of filter box are fixedly connected with the partition, the inner side of partition is fixedly connected with the connecting pipe, the top of filter box is equipped with the filter assembly for waste gas filtration;

[0008] The filter assembly includes motor fixedly connected to the top of filter box, connecting rod fixedly connected to the output shaft of motor, separation fan fixedly connected to the outer side of connecting rod and first metal filter screen and second metal filter screen fixedly connected between the inner top wall and inner bottom wall of filter box;

[0009] The top of filter box is equipped with dust cleaning assembly for preventing filter screen blockage.

[0010] Further, the top of filter box is provided with a rotating hole, and a bushing is fixedly connected to the inner side of the rotating hole, and the bottom end of the connecting rod penetrates the sleeve hole of the bushing and extends to the inner side of the filter box and is fixedly connected with the separation fan.

[0011] Furthermore, the separating fan is located on the left side of the partition, and both the first metal filter and the second metal filter are located on the right side of the partition. A polyurethane sponge is fixedly connected to the inner bottom wall of the filter box on the right side of the partition.

[0012] Furthermore, the first metal filter and the second metal filter are arranged sequentially along the left and right direction of the filter box, and the mesh size of the first metal filter is larger than that of the second metal filter.

[0013] Furthermore, a first differential pressure sensor is fixedly connected to the air inlet end of the air inlet pipe, and a second differential pressure sensor is fixedly connected to the air outlet end of the air outlet pipe.

[0014] Furthermore, the dust removal assembly includes an air pump fixedly connected to the top of the filter box, an air supply pipe fixedly connected to the air supply end of the air pump, and an air jet head fixedly connected to the air outlet of the air supply pipe.

[0015] Furthermore, the end of the air supply pipe away from the air pump passes through the top of the filter box and extends to the inside of the filter box, where it is fixedly connected to the inner bottom wall of the filter box, and the air outlet of the air supply pipe is located inside the filter box.

[0016] Furthermore, eight air outlets are provided on the left side of the gas pipeline wall, and the eight air outlets are arranged equidistantly along the vertical direction of the gas pipeline.

[0017] Furthermore, a connecting frame is fixedly connected to the bottom of the filter box by bolts. A first ash-collecting box and a second ash-collecting box are fixedly connected to the inner bottom wall of the connecting frame. The ash-collecting opening of the first ash-collecting box is located between the partition and the opposite side wall of the first metal filter screen, and the ash-collecting opening of the second ash-collecting box is located between the opposite side wall of the first metal filter screen and the second metal filter screen.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, this utility model provides an exhaust gas filter for a die-casting machine, which has the following beneficial effects:

[0020] The exhaust gas filter of this die-casting machine uses a motor-driven high-speed rotating separator fan to effectively separate large dust particles and oil droplets from the exhaust gas using centrifugal force. Combined with the dual filtration effect of the first and second metal filters, it can efficiently intercept medium and fine particulate matter, ensuring that the purified gas meets environmental emission standards. Furthermore, by setting a first differential pressure sensor and a second differential pressure sensor, the pressure difference before and after the filter is monitored in real time. When the pressure difference exceeds a set threshold, the cleaning operation is automatically triggered. The air pump delivers compressed air to the jet head through the air supply pipe to achieve intelligent cleaning, effectively avoiding filter clogging, extending the filter's service life, and reducing maintenance costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a perspective view of the filter box in the structure of this utility model;

[0023] Figure 3 This is a perspective view of the connecting frame, the first ash-bearing box, and the second ash-bearing box in the structure of this utility model;

[0024] Figure 4 This is a front view of the present utility model.

[0025] In the diagram: 1. Filter box; 2. Inlet pipe; 3. Outlet pipe; 4. Partition plate; 401. Connecting pipe; 5. Motor; 6. Connecting rod; 7. Separator fan; 8. First metal filter screen; 9. Second metal filter screen; 10. Polyurethane foam; 11. First differential pressure sensor; 12. Second differential pressure sensor; 13. Air pump; 14. Air delivery pipe; 15. Jet nozzle; 16. Connecting frame; 17. First dust collection box; 18. Second dust collection box. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1 to 4 This utility model provides a technical solution: an exhaust gas filter for a die casting machine, including a filter box 1, an inlet pipe 2 fixedly connected to the left side of the filter box 1, and an outlet pipe 3 fixedly connected to the right side of the filter box 1. A partition 4 is fixedly connected between the inner top wall and the inner bottom wall of the filter box 1. A connecting pipe 401 is fixedly connected to the inner side of the partition 4. A filter assembly for exhaust gas filtration is provided on the top of the filter box 1.

[0028] like Figure 1 As shown, the filter assembly includes a motor 5 fixedly connected to the top of the filter box 1, a connecting rod 6 fixedly connected to the output shaft of the motor 5, a separation fan 7 fixedly connected to the outside of the connecting rod 6, and a first metal filter screen 8 and a second metal filter screen 9 fixedly connected between the inner top wall and the inner bottom wall of the filter box 1.

[0029] The top of the filter box 1 is provided with a dust removal assembly to prevent filter screen clogging. The dust removal assembly includes an air pump 13 fixedly connected to the top of the filter box 1, an air supply pipe 14 fixedly connected to the air supply end of the air pump 13, and an air jet head 15 fixedly connected to the air outlet of the air supply pipe 14.

[0030] It should be noted that the top of the filter box 1 is provided with a rotating hole, and a bushing is fixedly connected to the inner side of the rotating hole. The bushing is fixed inside the rotating hole to provide support and sealing, prevent exhaust gas leakage, and reduce friction and wear when the connecting rod 6 rotates. The bottom end of the connecting rod 6 passes through the bushing hole and extends to the inner side of the filter box 1 to be fixedly connected to the separator fan 7.

[0031] The separator 7 is located on the left side of the partition 4, and the first metal filter 8 and the second metal filter 9 are both located on the right side of the partition 4. A polyurethane sponge 10 is fixedly connected to the inner bottom wall of the filter box 1 on the right side of the partition 4 to absorb the oil droplets remaining after passing through the separator 7.

[0032] The first metal filter 8 and the second metal filter 9 are arranged sequentially along the left and right direction of the filter box 1. The mesh size of the first metal filter 8 is larger than that of the second metal filter 9. The larger mesh size of the first metal filter 8 is used to intercept medium-sized particles, while the smaller mesh size of the second metal filter 9 is used to intercept fine particles.

[0033] The intake end of the intake pipe 2 is fixedly connected to a first differential pressure sensor 11, and the outlet end of the outlet pipe 3 is fixedly connected to a second differential pressure sensor 12. By monitoring the pressure difference before and after the filter, the clogging status of the filter screen is determined, providing a basis for the dust removal operation.

[0034] The end of the air supply pipe 14 away from the air pump 13 passes through the top of the filter box 1 and extends to the inside of the filter box 1, and is fixedly connected to the inner bottom wall of the filter box 1. The air outlet of the air supply pipe 14 is located inside the filter box 1. Eight air outlets are opened on the left side of the pipe wall of the air supply pipe 14, and the eight air outlets are arranged equidistantly along the vertical direction of the air supply pipe 14.

[0035] A connecting frame 16 is bolted to the bottom of the filter box 1. A first dust collection box 17 and a second dust collection box 18 are fixedly connected to the inner bottom wall of the connecting frame 16. The dust collection port of the first dust collection box 17 is located between the partition plate 4 and the opposite side wall of the first metal filter screen 8, and the dust collection port of the second dust collection box 18 is located between the opposite side walls of the first metal filter screen 8 and the second metal filter screen 9. Both the first dust collection box 17 and the second dust collection box 18 are used to collect the dust that falls off during the dust removal process, making it easy to clean.

[0036] In addition, two extraction ports are provided at the bottom of the filter box 1. The first dust collection box 17 and the second dust collection box 18 are located inside the corresponding extraction ports. By removing the bolts, the connecting frame 16 is disconnected from the filter box 1, thereby allowing the first dust collection box 17 and the second dust collection box 18 to be extracted from the filter box 1, which facilitates the cleaning of the collected dust.

[0037] The working principle of the above embodiments is as follows:

[0038] Exhaust gas enters the left cavity of filter box 1 through inlet pipe 2. Motor 5 drives connecting rod 6 and separator fan 7 to rotate at high speed, generating centrifugal force. Large dust particles and oil droplets in the exhaust gas are thrown towards the inner wall of filter box 1 under the action of centrifugal force, and slide down the wall to the bottom where they are adsorbed by polyurethane sponge 10. The separated gas enters the right cavity of filter box 1 through connecting pipe 401. The gas passes through the first metal filter 8 and the second metal filter 9 in sequence. The first metal filter 8 intercepts medium-sized particles, and the second metal filter 9 intercepts fine particles. The purified gas is discharged through outlet pipe 3.

[0039] The first differential pressure sensor 11 and the second differential pressure sensor 12 monitor the pressure difference before and after the filter in real time. When the pressure difference exceeds the set threshold, the control system triggers the dust removal operation, the air pump 13 starts, and delivers compressed air to the jet head 15 through the air supply pipe 14. The compressed air is sprayed from eight air outlets to remove the dust attached to the first metal filter screen 8 and the second metal filter screen 9. The detached dust falls into the first dust collection box 17 and the second dust collection box 18.

[0040] All electrical components mentioned in the text are electrically connected to the main controller and power supply. The main controller can be a conventional and known device such as a computer, and the existing publicly available power connection technology will not be elaborated in the text.

[0041] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A filter for exhaust gases from a die casting machine, comprising a filter box (1), an inlet pipe (2) fixedly connected to the left side of the filter box (1), and an outlet pipe (3) fixedly connected to the right side of the filter box (1), characterized in that: The inner top wall and the inner bottom wall of the filter box (1) are fixedly connected with a partition plate (4), the inner side of the partition plate (4) is fixedly connected with a connecting pipe (401), and the top of the filter box (1) is provided with a filter assembly for filtering exhaust gas. The filter assembly comprises a motor (5) fixedly connected to the top of the filter box (1), a connecting rod (6) fixedly connected to the output shaft of the motor (5), a separation fan (7) fixedly connected to the outer side of the connecting rod (6), and a first metal filter screen (8) and a second metal filter screen (9) fixedly connected between the inner top wall and the inner bottom wall of the filter box (1). The top of the filter box (1) is provided with a dust cleaning assembly for preventing the filter screen from being blocked.

2. A filter according to claim 1, characterised in that: The top of the filter box (1) is provided with a rotating hole, and the inner side of the rotating hole is fixedly connected with a bushing, the bottom end of the connecting rod (6) penetrates through the sleeve hole of the bushing and extends to the inner side of the filter box (1) and is fixedly connected with the separation fan (7).

3. A filter according to claim 1, wherein: The separation fan (7) is located on the left side of the partition plate (4), and the first metal filter screen (8) and the second metal filter screen (9) are both located on the right side of the partition plate (4), and the inner bottom wall of the filter box (1) and located on the right side of the partition plate (4) is fixedly connected with a polyurethane sponge (10).

4. A filter according to claim 1, wherein: The first metal filter screen (8) and the second metal filter screen (9) are arranged in sequence along the left-right direction of the filter box (1), and the mesh aperture of the first metal filter screen (8) is larger than that of the second metal filter screen (9).

5. A filter according to claim 1, wherein: The air inlet end of the air inlet pipe (2) is fixedly connected with a first differential pressure sensor (11), and the air outlet end of the air outlet pipe (3) is fixedly connected with a second differential pressure sensor (12).

6. A filter according to claim 1, wherein: The dust cleaning assembly comprises an air pump (13) fixedly connected to the top of the filter box (1), an air conveying pipe (14) fixedly connected to the air conveying end of the air pump (13), and a jet head (15) fixedly connected to the air outlet of the air conveying pipe (14).

7. A filter according to claim 6, wherein: The end of the air conveying pipe (14) away from the air pump (13) penetrates through the top of the filter box (1) and extends to the inner side of the filter box (1) and is fixedly connected with the inner bottom wall of the filter box (1), and the air outlet of the air conveying pipe (14) is located on the inner side of the filter box (1).

8. A filter according to claim 6, wherein: Eight air outlets are formed in the left side of the wall of the air conveying pipe (14), and the eight air outlets are arranged in sequence at equal distances along the up-down direction of the air conveying pipe (14).

9. A filter according to claim 1, wherein: The bottom of the filter box (1) is fixedly connected with a connecting frame (16) through bolts, the inner bottom wall of the connecting frame (16) is fixedly connected with a first dust receiving box (17) and a second dust receiving box (18), the dust receiving port of the first dust receiving box (17) is located between the opposite side walls of the partition plate (4) and the first metal filter screen (8), and the dust receiving port of the second dust receiving box (18) is located between the opposite side walls of the first metal filter screen (8) and the second metal filter screen (9).

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