A segmented air-suspended blower

Abstract

The application discloses a sectional air suspension blower, and belongs to the field of air suspension blowers, and aims at solving the problems of the traditional air suspension blower, such as difficulty in sealing, difficulty in controlling noise, frequent replacement of filters, inconvenience in maintenance and the like. The sectional air suspension blower comprises a filtering and noise reduction box part, a main machine main body part and a main electric box part and the like multiple independent box parts, and the multiple independent box parts are respectively processed as required and then combined into a complete machine which can run, wherein the filtering and noise reduction box part and the main electric box part are small in size and easy to seal, filter and reduce noise, and the main machine main body part which accounts for the largest proportion is in a natural state without sealing. The sectional air suspension blower can be applied to the fields of sewage treatment, breeding and cement and the like.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of air suspension blowers, in particular to a sectional air suspension blower. BACKGROUND

[0002] The operation of the air suspension blower is that the motor shaft is supported by the air bearing, the high-speed permanent magnet motor is driven to rotate the three-element centrifugal impeller, so as to realize the conversion and delivery of the flow and pressure of the gas. Among them, the core components such as air bearing and three-element centrifugal impeller have requirements for the cleanliness of the gas, especially the air bearing, which has high requirements for the filtration of the gas entering its internal contact, usually less than 1 micron particles, while the filtration requirement of the air passing through the three-element centrifugal impeller is not very high, even about 10 microns of particles can operate normally.

[0003] The traditional air suspension blowers on the market are basically all integrated in a large box, such as the Chinese invention patent application published as CN113217427A, which discloses an oil-free air suspension blower device. The first air chamber 13 and the second air chamber 14 are connected to each other through the heat dissipation guide port 17. Due to the need to consider the requirements of the core components, the box including the two air chambers 13 and 14 must be sealed except for the heat dissipation air outlet. The large space environment in the box must be in accordance with the requirements of the core components, the sealing difficulty is large, and the sealing requirement of the filtration place must also be correspondingly improved. Due to the large size of the box, the overall manufacturing process is relatively complicated, especially the overall sealing is difficult to do well, and finally the situation of "high cost and large leakage" may still occur. Through practice verification, after the whole machine runs for a period of time, the dust in the box increases, the conventional internal air cooling principle blower, the dust is sucked into the main machine, which affects the performance and shortens the service life.

[0004] The conventional air suspension blower considers the filtration requirement of the air bearing, and all the air inlets are installed with filters according to the highest level. According to the resistance parameter of the rated air volume of the filter GB / T14295, the initial air resistance of the medium efficiency filter meeting the requirement is not higher than 100 pa, the final resistance is not higher than 300 pa, and the filtration precision is 0.5 microns. Under the condition that the size of the box is unchanged, the filter will be blocked and replaced in a very short time, which results in high replacement cost, affected performance and user experience, and cannot achieve the "symptomatic treatment" of filtration.

[0005] According to our practice measurement and observation, about 90% of the noise source of the air suspension blower comes from the air inlet and outlet of the impeller end. The air outlet of the impeller end is generally circumscribed by the user pipeline, and a silencer can be added outside to reduce noise. However, the air inlet is in the box, so in order to reduce the noise of the whole machine, the sound absorption / separation treatment must be done in the whole box. The air inlet filter port needs special design for noise reduction treatment. For example, the air suspension blower device without oil disclosed in Chinese invention patent application (publication number CN113217427A) has a noise reduction silencer 4 only arranged at the air outlet of the motor heat dissipation exhaust pipe 26 which is not the largest noise source. This way of reducing noise is far from enough. Moreover, since the frequency converter 3 is installed in the first air chamber 13, the external normal temperature gas will be significantly increased. The heated gas enters the second air chamber 14 and then enters the core components inside the main machine. The cooling effect is very unsatisfactory.

[0006] Moreover, due to the large space of the large box, the amount of sound absorption material used is large, the overall installation is complicated, and the material cost and labor cost are high. In addition, since the box contains other components such as the main machine, the layout design of the noise reduction part will be hindered, and the final noise reduction effect is still unsatisfactory, and it is not possible to achieve a truly industry "silent fan" (within 80 decibels), which lacks market competitiveness. SUMMARY

[0007] The present application aims to solve the problems of traditional air suspension blowers, such as difficulty in sealing the large box, difficulty in controlling noise, frequent replacement of filters in the large box, and inconvenience in maintenance.

[0008] The invention discloses a segmented air suspension blower, which comprises a filtering and noise reduction box part, a main machine body part and a main electric box part, and the main machine body part occupies the largest proportion and is made in a whole natural state without sealing.

[0009] Further optimization is that an initial filter is arranged at the main air inlet of the filtering and noise reduction box part, and a filter is arranged at the heat dissipation air inlet of the main electric box part.

[0010] Further optimization is that two layers of filters are arranged at the heat dissipation air inlet of the main electric box part, and the filters are an initial filter and a medium filter in sequence.

[0011] Further optimization is that sound-absorbing cotton is arranged at several positions in the interior of the filtering and noise reduction box part, and sound-absorbing cotton is arranged in the interior of the main electric box part.

[0012] Further optimization is that a perforated plate sound-absorbing device is arranged in the interior of the filtering and noise reduction box part.

[0013] Further optimization is that two layers of filters are arranged at the heat dissipation air inlet of the main electric box part, and the filters are an initial filter and a medium filter in sequence; sound-absorbing cotton is arranged in the main electric box part; and sound-absorbing cotton and a perforated plate sound-absorbing device are arranged in the filtering and noise reduction box part.

[0014] The sectional air suspension blower under the technical scheme above is a novel air suspension blower comprising a main body part, a main electric box part, a filtering and noise reduction box part and other independent and combinable structures, solves the sealing and air inlet filtering difficulty of the overall machine box or large box body, improves the service life, easily reduces the noise of the overall machine, is more convenient than the traditional blower in installation, is convenient in maintenance, has a longer filter replacement period and reduced cost, and has obviously improved heat dissipation effect due to the optimized structure. BRIEF DESCRIPTION OF DRAWINGS

[0015] Herein, all the drawings in the application are briefly described:

[0016] Figure 1 The overall structure diagram of the sectional box body; wherein,

[0017] 1, the filtering and noise reduction box part: 1.1, the primary filter; 1.2, the first sound absorbing cotton; 1.3, the second sound absorbing cotton; 1.4, the third sound absorbing cotton; 1.5, the orifice plate sound absorbing device;

[0018] 2, the main body part: 2.1, the main air outlet pipeline; 2.2, the heat dissipation air outlet pipeline; 2.3, the main machine; 2.4, the air bearing;

[0019] 2.5, the heat dissipation air inlet pipeline; 2.6, the main air inlet pipeline; 2.7, the impeller

[0020] 3, the main electric box part: 3.1, the primary filter; 3.2, the medium filter; 3.3, the fourth sound absorbing cotton;

[0021] Figure 2 The overall machine top view layout diagram of the sectional air suspension blower;

[0022] Figure 3 The overall machine appearance perspective diagram of the sectional air suspension blower. DETAILED DESCRIPTION

[0023] According to the technical scheme concept of the application, two specific embodiments are shown here to illustrate.

[0024] Embodiment one: the sectional air suspension blower as shown in Figure 1 , Figure 2 , comprises a filtering and noise reduction box part 1, a main body part 2 and a main electric box part 3 and other multiple independent designed box bodies; the multiple independent box bodies can be combined into the overall machine operation as shown in Figure 3 ; wherein, the box bodies of the filtering and noise reduction box part 1 and the main electric box part 3 are only small box bodies and are partially sealed, and the main body part 2 with the largest proportion is in a natural state without sealing.

[0025] The host body part 2 contains the host 2.3 and its.

[0026] The core components impeller 2.7 and air bearing 2.4 supporting the rotation axis of the impeller; the front end of the host 2.3 is provided with a main air inlet pipe 2.6 and a main air outlet pipe 2.1; the rear end of the host 2.3 is provided with a heat dissipation air inlet pipe 2.5 and a heat dissipation air outlet pipe 2.2;

[0027] The filter and noise reduction box part 1 is only provided with a main air inlet and another pipe opening of the main air inlet pipe 2.6 placed in the host body part 2, and the rest is in a sealed state; the main air inlet of the filter and noise reduction box part 1 is provided with a primary filter, which meets the requirements of the initial air resistance of the primary filter not higher than 50 pa, the final resistance not higher than 200 pa, and the filtering accuracy greater than 2 microns (or even greater) according to the resistance parameters of the rated air volume of GB / T14295 filter. Figure 1 The main air inlet direction is shown, and the host 2.3 starts working from the impeller 2.7 to deliver gas from the main air outlet pipe 2.1.

[0028] On the main electric box part 3, only the air inlet for heat dissipation of the host 2.3 and the other pipe opening of the heat dissipation air inlet pipe 2.5 placed in the host body part 2 are provided, and the rest of the main electric box part 3 is in a sealed state; two layers of filters are provided at the heat dissipation air inlet of the main electric box part 3, i.e. a primary filter 3.1 and a medium-efficiency filter 3.2.

[0029] For the heat dissipation of the host 2.3, the external cold air is sent from the air inlet of the main electric box part 3, which can take away part of the temperature of the weak current in the box, so that the electrical devices in the box are always in a "cooling" effect, thereby prolonging the service life of the electrical devices. The heat dissipation air inlet pipe 2.5 has a very small flow rate and a very small noise, but the filtering accuracy is very high. Therefore, the primary filter 3.1 and the medium-efficiency filter 3.2 are used, which can significantly prolong the replacement period of the filters compared with the traditional structure under the same filtering area due to the small flow rate.

[0030] From Figure 1 As shown in the main electric box part 3 and the filter and noise reduction box 1, compared with the traditional whole-welded box, this independent segmented box has stronger versatility and is more convenient to maintain.

[0031] Example two: based on example one, further optimization and improvement are made, and noise reduction is processed in multiple aspects, such as Figure 1As shown, a first sound-absorbing cotton 1.2, a second sound-absorbing cotton 1.3, and a third sound-absorbing cotton 1.4 are arranged inside the filter noise reduction box section 1; a fourth sound-absorbing cotton 3.3 is arranged near the heat dissipation air intake pipe 2.5 inside the main electrical box section 3; and a perforated plate sound-absorbing device 1.5 is installed inside the filter noise reduction box section 1, i.e., according to... Figure 1 The main intake noise source shown is at point 2.6 in the main intake duct. The loudest noise source must first pass through... Figure 1 The perforated plate sound-absorbing device 1.5 shown (with specific sound-absorbing cotton filled inside the perforated plate) absorbs most of the high / low frequency noise energy through the sound trap noise reduction principle. Then, the third sound-absorbing cotton 1.4 and the second sound-absorbing cotton 1.3 absorb some of the audio energy. Finally, the sound source is partially absorbed by the first sound-absorbing cotton 1.2 before passing through the initial pre-filter 1.1. In practical cases, noise levels of around 100 decibels can be reduced to below 80 decibels. Unlike traditional whole-machine noise reduction, the noise source is enclosed separately in a filter noise reduction box, achieving a truly "silent fan" in the industry.

[0032] As described above, the implementation process demonstrated the significant advantages of disassembling the components of the air-suspension blower and designing each section's housing independently. Because the filter and noise reduction box (section 1) and the main electrical box (section 3) are relatively small, sealing, filtration, and noise reduction are easily achieved. The main unit's large components and other accompanying smaller parts are all installed within the main unit's main body (section 2), which has the largest volume and the most welded sections, thus eliminating the need for sealing. This segmented structure effectively solves the problems of "difficult sealing of large housings, difficulty in noise reduction, and inconvenient and frequent filter replacement" inherent in previous integrated units. The independently designed housings facilitate disassembly, installation, and maintenance. Compared to traditional integrated structures, the structure is simpler, installation is more convenient, and maintenance is easier. It also effectively maintains the entire unit, provides high-quality airflow, and improves user comfort.

Claims

1. A segmented air-suspension blower, characterized in that, The system comprises a segmented independent housing consisting of a noise reduction and filtration box (1), a main unit (2), and a main electrical control box (3). These segmented independent housings are processed separately and then reassembled into a fully functional unit. The noise reduction and filtration box (1) and the main electrical control box (3) are partially sealed, while the main unit (2) is in a completely unsealed state. The main unit (2) includes the main unit (2.3), as well as the impeller (2.7), a core component within the main unit, and an air bearing (2.4) supporting the impeller's rotation shaft. A main air intake pipe (2.6) is installed at the front end of the main unit (2.3), and a main air outlet pipe (2.1) is installed at the air outlet end of the main unit (2.3). A heat dissipation air intake pipe (2.5) and a heat dissipation air outlet pipe (2.2) are installed at the rear end of the main unit (2.3). The noise reduction and filtration box (1) housing has only one main air intake port and another main air intake port placed inside the main unit (2). The inlet of the main air intake pipe (2.6); when the inlet of the main air intake pipe (2.6) extends into the filter noise reduction box section (1), the box body of the filter noise reduction box section (1), except for one main air intake, is sealed; on the box body of the main electrical box section (3), only an air intake for internal heat dissipation of the host (2.3) and another heat dissipation air intake pipe (2.5) placed in the host body section (2) are opened; when the heat dissipation air intake pipe (2.6) is opened into the main electrical box section (3), the filter noise reduction box section (1) is sealed. After the pipe opening of the air pipe (2.5) extends into the main electrical box (3), the main electrical box (3) is sealed except for the air inlet for internal heat dissipation of the host (2.3); while the main body (2) is in a completely unsealed state, ensuring that the gas coming from the main air intake direction is discharged only from the main air outlet pipe (2.1), and the gas coming from the heat dissipation air intake pipe (2.5) is discharged only from the heat dissipation air outlet pipe (2.2); A primary filter (1.1) is installed at the main air inlet of the filtration and noise reduction box section (1); a filter is installed at the heat dissipation air inlet of the main electrical box section (3); Two layers of filters are installed at the heat dissipation air inlet of the main electrical box (3): first a primary filter (3.1), and then a medium-efficiency filter (3.2); The first sound-absorbing cotton (1.2), the second sound-absorbing cotton (1.3) and the third sound-absorbing cotton (1.4) are arranged in the filter noise reduction box section (1); the fourth sound-absorbing cotton (3.3) is arranged in the main electrical box section (3).

2. The segmented air-suspension blower as described in claim 1, characterized in that, A perforated plate sound-absorbing device (1.5) is provided at the front end of the main air intake pipe (2.6) of the filter noise reduction box section (1).

3. The segmented air-suspension blower as described in claim 1, characterized in that, Two layers of filters are provided at the heat dissipation air inlet of the main electrical box section (3), namely, a primary filter (3.1) and a medium-efficiency filter (3.2); sound-absorbing cotton is provided in the main electrical box section (3); in the filter noise reduction box section (1), not only is sound-absorbing cotton provided, but also a perforated plate sound-absorbing device (1.5) is provided at the front end of the main air intake pipe (2.6).

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