High-stability low-noise circulating fan

Abstract

The utility model relates to the technical field of circulating fans, and discloses a high-stability low-noise circulating fan which comprises a fan shell and further comprises a silencing assembly arranged on one side of an air inlet and used for weakening working noise of the fan. And the lubricating assembly is arranged in the reinforcing pipe and enables the transmission shaft to rotate more stably. The fan shell is positioned and installed at a preset place through the installation assembly, then the air outlet is connected with an external air exchange pipeline, and during work, external air can enter the fan shell through the air inlet; the noise intensity can be weakened through the sound insulation net cylinder and the sound insulation cotton, then the lubricating assembly is arranged to be matched with the infusion pump, lubricating oil can be introduced into the rolling bearing, and therefore injection of the lubricating oil can be achieved under the non-stop condition, the transmission shaft is kept stable and smooth during rotation, large noise caused by dry grinding due to the fact that the lubricating oil is dried up is avoided, and the service life of the transmission shaft is prolonged. And the effect of low-noise operation is achieved in cooperation with the silencing assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of circulation fans, in particular to a low-noise circulation fan with high stability. Background Technique

[0002] As a commonly used ventilation device, a circulation fan can drive the impeller to rotate through an electric motor, so as to make the air circulate. Its main components include an electric motor, an impeller, a housing and a control system. In the actual use process, staff can select various types of fans such as constant-current circulation fans, constant-pressure circulation fans, and intelligent circulation fans according to different use environments and design requirements to meet production needs.

[0003] When the existing circulation fan is in use, due to the long-term operation of the electric motor, the lubricating oil outside the output end of the electric motor will gradually dry up. At this time, the electric motor will generate greater noise when rotating. At the same time, due to insufficient lubrication and large friction with the inner wall of the casing, the rotation stability of the output end of the electric motor is reduced, and it is very likely to shake and other situations, which is not conducive to the long-term use of the circulation fan. Content of the Utility Model

[0004] The purpose of the utility model is to provide a low-noise circulation fan with high stability to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A low-noise circulation fan with high stability, including a fan housing, both sides of the bottom of the fan housing are fixedly connected with support plates, a bearing plate is arranged below the fan housing, the bottom of the support plate is connected with the bearing plate, and an installation component for positioning and fixing the fan housing on the ground is arranged at the bottom of the bearing plate. An air outlet is opened at the top of the fan housing, and an air inlet is opened on one side of the fan housing. It also includes:

[0006] A silencing component arranged on one side of the air inlet for weakening the working noise of the fan. A strengthening pipe is vertically installed on the side of the fan housing away from the air inlet. A transmission shaft is coaxially arranged inside the strengthening pipe. One end of the transmission shaft penetrates into the fan housing and is fixedly installed with an impeller. A driving component for providing a rotational force for the transmission shaft is arranged at the end of the strengthening pipe away from the fan housing;

[0007] A lubricating component arranged inside the strengthening pipe for making the rotation of the transmission shaft more stable. An oil storage tank is arranged above the strengthening pipe. The oil storage tank is fixedly installed on the fan housing. The bottom of the oil storage tank is fixedly connected with a liquid extraction pump. The liquid inlet of the liquid extraction pump is connected with the liquid outlet of the oil storage tank.

[0008] Preferably, the installation component includes a bottom plate disposed below the bearing plate. A rubber pad is provided between the bottom plate and the bearing plate. The rubber pad is connected to the bottom plate and the bearing plate respectively. Mounting seats are fixedly connected to both sides of the bottom plate.

[0009] Preferably, the sound insulation component includes a first annular seat disposed on one side of the air inlet. A fixed cylinder is fixedly connected to one side of the first annular seat. A sound insulation net cylinder is fixedly installed inside the fixed cylinder. Sound insulation cotton is provided between the sound insulation net cylinder and the fixed cylinder. The sound insulation net cylinder is made of polyester fiber material.

[0010] Preferably, a second annular seat is provided at one end of the fixed cylinder away from the air inlet. A filter screen is fixedly installed inside the second annular seat.

[0011] Preferably, the driving component includes a base fixed to the top of the bearing plate. A motor is fixedly installed on the top of the base. One end of the transmission shaft away from the impeller is connected to the output end of the motor.

[0012] Preferably, the lubrication component includes rolling bearings disposed outside the transmission shaft. There are two rolling bearings. A rotating cavity corresponding to the rolling bearings is formed inside the reinforcing pipe. The rolling bearings are located inside the rotating cavity. First oil channels are formed on the outer surface of the rolling bearings. At least one oil inlet is formed at the bottom of the inner cavity of the first oil channels. The first oil channels communicate with the inside of the rolling bearings through the oil inlets. Second oil channels corresponding to the first oil channels are formed on the inner wall of the reinforcing pipe. The liquid outlet of the liquid pumping pump is connected to a first oil pipeline. The top of the inner cavity of the second oil channels is connected to a second oil pipeline. The top end of the second oil pipeline is connected to the first oil pipeline. An oil outlet is formed at the bottom of the inner cavity of the second oil channels. A plug is provided at the bottom end of the oil outlet. An oil filling port is provided at the top of the oil storage tank.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] The present utility model is positioned and installed at a preset location through the installation component, and then the air outlet is connected to an external air exchange pipeline. During operation, external air enters the inside of the fan housing through the air inlet; the sound insulation net cylinder and sound insulation cotton inside the sound insulation component can weaken the noise intensity. Then, by setting the lubrication component in cooperation with the liquid pumping pump, the lubricating oil liquid inside the oil storage tank can be introduced into the rolling bearings. In this way, the injection of lubricating oil can be achieved without stopping the machine, enabling the transmission shaft to rotate smoothly and without generating excessive noise due to dry grinding caused by the drying up of the lubricating oil. While improving the structural stability, the cooperation with the sound insulation component achieves the effect of low-noise operation. Description of the Drawings

[0015] Figure 1Structural schematic diagram of a low-noise circulation fan with high stability provided by the present utility model;

[0016] Figure 2 Structural schematic diagram of the installation component provided by the present utility model;

[0017] Figure 3 Structural schematic diagram of the sound insulation component provided by the present utility model;

[0018] Figure 4 Structural schematic diagram of the drive component provided by the present utility model;

[0019] Figure 5 Structural schematic diagram of the lubrication component provided by the present utility model.

[0020] In the figure: 1, fan housing; 2, bearing plate; 3, support plate; 4, air outlet; 5, installation component; 51, rubber pad; 52, bottom plate; 53, mounting seat; 6, air inlet; 7, sound insulation component; 71, first annular seat; 72, sound insulation net cylinder; 73, fixed cylinder; 74, sound insulation cotton; 8, second annular seat; 9, filter screen; 10, impeller; 11, reinforcing pipe; 12, lubrication component; 121, first oil pipeline; 122, second oil pipeline; 123, rotating cavity; 124, rolling bearing; 125, first oil liquid channel; 126, oil liquid inlet; 127, second oil liquid channel; 128, sealing ring; 129, oil liquid outlet; 1210, plug; 13, oil storage tank; 14, oil filling port; 15, liquid pumping pump; 16, drive component; 161, motor; 162, base; 17, transmission shaft. Specific implementation manners

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-5As shown in the figure, a low-noise circulation fan with high stability includes a fan housing 1. At the bottom of both sides of the fan housing 1, support plates 3 are fixedly connected. A bearing plate 2 is arranged below the fan housing 1, and the bottom of the support plate 3 is connected to the bearing plate 2. An installation component 5 for positioning and fixing the fan housing 1 on the ground is arranged at the bottom of the bearing plate 2. By setting the installation component 5, it is convenient to fixedly install the present utility model at a preset working position and facilitate the execution of air circulation work. An air outlet 4 is opened at the top of the fan housing 1, and an air inlet 6 is opened on one side of the fan housing 1. It further includes: a silencing component 7 arranged on one side of the air inlet 6 for reducing the working noise of the fan. By setting the silencing component 7, the noise volume generated by the air flow entering the interior of the fan housing 1 from the outside of the air inlet 6 can be weakened, thus achieving a noise reduction effect and realizing low-noise operation. A reinforcing pipe 11 is vertically installed on the side of the fan housing 1 away from the air inlet 6. A transmission shaft 17 is coaxially arranged inside the reinforcing pipe 11. One end of the transmission shaft 17 penetrates into the interior of the fan housing 1 and is fixedly installed with an impeller 10. A driving component 16 capable of providing a rotational force for the transmission shaft 17 is arranged at the end of the reinforcing pipe 11 away from the fan housing 1. By setting the driving component 16, the impeller 10 can be driven to rotate through the transmission shaft 17, so that the air flows in a cycle. A lubricating component 12 arranged inside the reinforcing pipe 11 can make the rotation of the transmission shaft 17 more stable. By setting the lubricating component 12, the transmission shaft 17 can always maintain smooth rotation when rotating, making the rotation of the impeller 10 more stable and improving the structural stability. An oil storage tank 13 is arranged above the reinforcing pipe 11. The oil storage tank 13 is fixedly installed on the fan housing 1. A liquid extraction pump 15 is fixedly connected to the bottom of the oil storage tank 13. The liquid inlet of the liquid extraction pump 15 is connected to the liquid outlet of the oil storage tank 13. By setting the oil storage tank 13 and the liquid extraction pump 15, it is convenient to introduce the lubricating oil into the lubricating component 12.

[0023] The installation component 5 includes a bottom plate 52 arranged below the bearing plate 2. A rubber pad 51 is arranged between the bottom plate 52 and the bearing plate 2. The rubber pad 51 is respectively connected to the bottom plate 52 and the bearing plate 2. Installation seats 53 are fixedly connected to both sides of the bottom plate 52. By setting the rubber pad 51, the seismic performance is enhanced, the vibration generated during the operation of the driving component 16 is weakened, and the stability is further improved.

[0024] The silencing component 7 includes a first annular seat 71 arranged on one side of the air inlet 6. A fixed cylinder 73 is fixedly connected to one side of the first annular seat 71. A sound insulation net cylinder 72 is fixedly installed inside the fixed cylinder 73. Sound insulation cotton 74 is arranged between the sound insulation net cylinder 72 and the fixed cylinder 73. The sound insulation net cylinder 72 is made of polyester fiber material, such as Figure 3As shown, during actual use, when external air enters the interior of the fixed cylinder 73, noise is generated due to air flow. This noise is introduced between the sound-permeable net cylinder 72 and the fixed cylinder 73 through the sound-permeable holes on the sound-insulating net cylinder 72 along the way. Then, the sound-absorbing cotton 74 weakens the noise intensity, thus achieving the effect of low noise.

[0025] A second annular seat 8 is provided at one end of the fixed cylinder 73 away from the air inlet 6. A filter screen 9 is fixedly installed inside the second annular seat 8. By providing the filter screen 9, impurities can be intercepted before the external air enters the interior of the sound-insulating net cylinder 72, thus preventing impurity particles from colliding with the inner wall of the fan housing 1 and generating noise, and further improving the noise reduction effect.

[0026] The drive assembly 16 includes a base 162 fixed to the top of the carrier plate 2. A motor 161 is fixedly installed on the top of the base 162. One end of the transmission shaft 17 away from the impeller 10 is connected to the output end of the motor 161. The motor 161 is used to drive the impeller 10 at one end of the transmission shaft 17 to rotate, so that the air inside the fan housing 1 flows in a cycle.

[0027] The lubrication assembly 12 includes rolling bearings 124 arranged on the outer side of the transmission shaft 17. There are two rolling bearings 124. A rotating cavity 123 corresponding to the rolling bearings 124 is opened inside the reinforcing pipe 11. The rolling bearings 124 are located inside the rotating cavity 123. As Figure 5 shown, by providing two rolling bearings 124, the support strength of the transmission shaft 17 is enhanced, and it is difficult for the transmission shaft 17 to shift due to excessive rotational force; a first oil passage 125 is opened on the outer surface of the rolling bearing 124. At least one oil inlet 126 is opened at the bottom of the inner cavity of the first oil passage 125. The first oil passage 125 is connected to the inside of the rolling bearing 124 through the oil inlet 126. A second oil passage 127 corresponding to the first oil passage 125 is opened on the inner wall of the reinforcing pipe 11. The liquid outlet of the liquid pumping pump 15 is connected to a first oil pipeline 121. The top of the inner cavity of the second oil passage 127 is connected to a second oil pipeline 122. The top end of the second oil pipeline 122 is connected to the first oil pipeline 121. An oil outlet 129 is opened at the bottom of the inner cavity of the second oil passage 127. A plug 1210 is provided at the bottom end of the oil outlet 129. By providing the oil outlet 129, it is convenient to discharge the deteriorated lubricating oil and facilitate the replacement of the lubricating oil; an oil filling port 14 is provided at the top of the oil storage tank 13. The liquid pumping pump 15 can drive the lubricating oil inside the oil storage tank 13 to enter the inside of the rolling bearing 124 through the first oil pipeline 121, the second oil pipeline 122, the second oil passage 127, the first oil passage 125, and the oil inlet 126 in sequence. In this way, lubricating oil can be injected without shutting down the machine, the transmission shaft 17 remains stable and smooth during rotation, the rotation of the impeller 10 is more stable, and the structural stability is improved.

[0028] Working principle: First, the staff locates and installs the present utility model at a preset location through the installation component 5, and then connects the air outlet 4 to an external air exchange pipeline. During operation, external air enters the inside of the fan housing 1 through the air inlet 6. The sound insulation net cylinder 72 and the sound insulation cotton 74 inside the sound insulation component 7 can weaken the noise intensity. Then, by setting the lubrication component 12 in cooperation with the liquid extraction pump 15, the lubricating oil liquid inside the oil storage tank 13 can be introduced into the rolling bearing 124. In this way, the injection of lubricating oil can be realized without shutting down the machine, so that the transmission shaft 17 rotates smoothly. It will not produce large noise due to dry grinding caused by the drying up of the lubricating oil. While improving the structural stability, the effect of low-noise operation is achieved in cooperation with the sound insulation component 7.

[0029] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0030] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A low-noise circulation fan with high stability, comprising a fan housing (1), characterized in that, The bottoms of both sides of the fan housing (1) are fixedly connected to support plates (3), a bearing plate (2) is provided below the fan housing (1), the bottom of the support plate (3) is connected to the bearing plate (2), and a mounting assembly (5) is provided at the bottom of the bearing plate (2) for facilitating the positioning and fixing of the fan housing (1) on the ground, an air outlet (4) is provided at the top of the fan housing (1), an air inlet (6) is provided at one side of the fan housing (1), and further comprises: A silencer assembly (7) is provided on one side of the air inlet (6) for reducing the operating noise of the fan. A reinforcement tube (11) is vertically installed on the side of the fan housing (1) away from the air inlet (6). A transmission shaft (17) is coaxially provided inside the reinforcement tube (11). One end of the transmission shaft (17) passes through the interior of the fan housing (1) and is fixedly installed with an impeller (10). A drive assembly (16) capable of providing rotational force for the transmission shaft (17) is provided on the end of the reinforcement tube (11) away from the fan housing (1). A lubricating assembly (12) is arranged inside a reinforcement tube (11) to make the rotation of a transmission shaft (17) more stable. An oil storage tank (13) is provided above the reinforcement tube (11). The oil storage tank (13) is fixedly mounted on a fan housing (1). A liquid extraction pump (15) is fixedly connected to the bottom of the oil storage tank (13). The liquid inlet of the liquid extraction pump (15) is connected to the liquid outlet of the oil storage tank (13).

2. A low-noise circulating fan with high stability according to claim 1, characterized in that: The mounting assembly (5) comprises a bottom plate (52) arranged below the bearing plate (2), a rubber pad (51) being provided between the bottom plate (52) and the bearing plate (2), the rubber pad (51) being connected to the bottom plate (52) and the bearing plate (2) respectively, and mounting seats (53) being fixedly connected to both sides of the bottom plate (52).

3. A low-noise circulation fan with high stability according to claim 1, characterized in that: The muffler assembly (7) comprises a first annular seat (71) arranged on one side of the air inlet (6); a fixed cylinder (73) is fixedly connected to one side of the first annular seat (71); a sound insulation net cylinder (72) is fixedly installed inside the fixed cylinder (73); sound insulation cotton (74) is provided between the sound insulation net cylinder (72) and the fixed cylinder (73); and the sound insulation net cylinder (72) is made of polyester fiber material.

4. The high-stability and low-noise circulation fan according to claim 3, wherein: A second annular seat (8) is provided at one end of the fixed cylinder (73) away from the air inlet (6), and a filter screen (9) is fixedly installed inside the second annular seat (8).

5. The high-stability and low-noise circulation fan according to claim 1, characterized in that: The driving assembly (16) comprises a base (162) fixed to the top of the carrier plate (2), a motor (161) is fixedly mounted on the top of the base (162), and an end of the transmission shaft (17) away from the impeller (10) is connected to the output end of the motor (161).

6. The low-noise circulating fan with high stability according to claim 1, characterized in that: The lubrication assembly (12) includes rolling bearings (124) arranged outside the transmission shaft (17). There are two rolling bearings (124). A rotating cavity (123) corresponding to the rolling bearings (124) is formed inside the reinforcing pipe (11). The rolling bearings (124) are located inside the rotating cavity (123). A first oil passage (125) is formed on the outer surface of the rolling bearing (124). At least one oil inlet (126) is formed at the bottom of the inner cavity of the first oil passage (125). The first oil passage (125) is communicated with the inside of the rolling bearing (124) through the oil inlet (126). A second oil passage (127) corresponding to the first oil passage (125) is formed on the inner wall of the reinforcing pipe (11). The liquid outlet of the liquid pumping pump (15) is connected with a first oil pipe (121). The top of the inner cavity of the second oil passage (127) is connected with a second oil pipe (122). The top end of the second oil pipe (122) is connected with the first oil pipe (121). An oil outlet (129) is formed at the bottom of the inner cavity of the second oil passage (127). A plug (1210) is arranged at the bottom end of the oil outlet (129). An oil filling port (14) is arranged at the top of the oil storage tank (13).

Images