A high power density centrifugal fan

Abstract

The present invention discloses a high power density centrifugal fan, belonging to the technical field of centrifugal fans. The present invention includes a casing fixedly installed in a factory building, and the side and upper surface of the casing are respectively provided with an air inlet and an air outlet, and a driving motor is fixedly installed on the outer side of the casing, and an impeller assembly is fixedly installed on the output end of the driving motor; it also includes: a cleaning assembly installed on the outer side of the blade, used to realize automatic cleaning of the blade, the cleaning assembly includes a cleaning member sleeved on the outer side of the blade, and a connecting member is fixedly connected to the side of the cleaning member close to the output end of the driving motor; a lubrication assembly is installed on the outer side of the first side plate, used to realize filtering and circulation of lubricating oil. The high power density centrifugal fan can automatically clean the blades after a single work is completed, and can filter and circulate the lubricating oil by using the centrifugal force when the blades rotate, effectively improving the lubrication effect.

Description

Technical Field

[0001] The invention relates to the technical field of centrifugal fans, in particular to a high power density centrifugal fan. Background Art

[0002] High power density centrifugal fan is a kind of driven fluid machinery that relies on input mechanical energy to increase gas pressure and discharge gas. It is widely used in factories, mines, tunnels, cooling towers, vehicles, ships and buildings for ventilation, dust removal and cooling.

[0003] In the prior art, there is a high power density centrifugal fan and a control system of the centrifugal fan, such as the publication number CN109882424A. The high power density centrifugal fan of the present invention adopts an integrated structural solution, which greatly simplifies the system structure; in addition, the cabinet is entirely covered with silencer cotton, which blocks most of the noise when the centrifugal fan is working; and the high-speed gearbox integrates the transmission system and the lubrication system, and the oil tank of the lubrication system serves as the support seat of the transmission system, which further simplifies the system structure and improves the power density of the centrifugal fan. However, the lubrication system you use only uses a multi-layer lubrication layer structure for contact lubrication, and it is unable to filter out the wear debris generated in the lubricating oil during operation, which makes it easy to further aggravate the wear of the equipment under high power density operation;

[0004] Another example is a centrifugal fan with a self-cleaning function, which is disclosed in CN116292339B, and includes a supporting main frame and a centrifugal fan main body, wherein the centrifugal fan main body is installed on the top of the supporting main frame; a flushing mechanism, wherein the flushing mechanism is provided on the upper part of the centrifugal fan main body; and a closing mechanism, wherein the closing mechanism is provided on the centrifugal fan main body. The present invention sprays the cleaning liquid to the inner upper part of the centrifugal fan main body through a nozzle, and then the centrifugal fan main body drives the cleaning liquid to rotate, so that the cleaning strength of the cleaning liquid on the inside of the centrifugal fan main body can be enhanced, and under the sealing effect of the first baffle and the second baffle, the cleaning liquid can be prevented from being blown out by the centrifugal fan main body during flushing, so that the inner wall of the centrifugal fan can be repeatedly flushed to improve the flushing effect, but during its use, it is necessary to start the cleaning mechanism separately to realize the flushing of the inner side of the fan to realize the cleaning effect, and the direct flushing method makes it easy for water to remain inside the body, and at the same time, it is not allowed to contact water in some air supply environments, such as the transportation of powder, so there are certain use defects. Summary of the invention

[0005] The purpose of the present invention is to provide a high power density centrifugal fan to solve the problems raised by the above background technology that the high power density centrifugal fans currently on the market are inconvenient to filter and circulate the lubricating oil and have limited blade cleaning effect.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: A high power density centrifugal fan, comprising a casing fixedly mounted on a factory building, and the side and upper surface of the casing are respectively provided with an air inlet and an air outlet, and a driving motor is fixedly mounted on the outer side of the casing, and an impeller assembly is fixedly mounted on the output end of the driving motor, the driving motor comprises a first side plate fixedly mounted on the output end of the driving motor, and blades are evenly fixedly mounted on the outer side of the first side plate, and an end of the blade away from the first side plate is fixedly connected to a second side plate;

[0007] It also includes: a cleaning assembly installed on the outer side of the blade, used to automatically clean the blade, the cleaning assembly includes a cleaning piece sleeved on the outer side of the blade, and a connecting piece is fixedly connected to the side of the cleaning piece close to the output end of the drive motor, and a counterweight is fixedly installed on the outer side of the cleaning piece;

[0008] A lubrication assembly is installed on the outer side of the first side plate and is used to realize the filtering circulation of the lubricating oil. The lubrication assembly includes an embedded part fixedly installed on the outer side of the first side plate, and an elastic liquid bag is embedded and installed on the inner side of the embedded part, and a filter is fixedly installed on the inner side of the elastic liquid bag. At the same time, the elastic liquid bag is evenly connected with an oil injection pipe and an oil suction pipe to realize the circulation and transportation of the lubricating oil.

[0009] Preferably, the blades are arranged in an inclined shape, and the second side plate connected to the outer side of the blades is arranged in an annular structure, and the second side plate and the air inlet are arranged coaxially.

[0010] By adopting the above technical solution, when the blades are rotating stably, they can inhale air through the air inlet, pressurize it and discharge it through the air outlet, thereby achieving efficient air supply.

[0011] Preferably, the cleaning member is arranged in an annular structure, and the annular inner wall of the cleaning member is in contact with the outer wall of the blade, and the counterweight member on the outer side of the cleaning member is arranged to be inclined toward the driving motor.

[0012] By adopting the above technical solution, when the blade rotates at high speed, the counterweight on the outside of the blade will drive the cleaning element to slide along the surface of the blade under the action of centrifugal force, thereby facilitating the subsequent cleaning of dust and the like attached to the surface of the blade.

[0013] Preferably, the cleaning member is made of rubber material, and generates static electricity through friction with the blades.

[0014] By adopting the above technical solution, the cleaning member rubs against the blades during the reciprocating sliding process, thereby generating static electricity, so that the dust scraped by the cleaning member can be prevented from falling due to the electrostatic adsorption, thereby achieving sufficient cleaning and collection.

[0015] Preferably, a first magnetic block is fixedly mounted on one side of the connecting member close to the first side plate, and an electromagnet is fixedly mounted on the inner wall of the housing, and the positions of the electromagnet and the first magnetic block are correspondingly arranged, and the magnetic poles of the opposite surfaces of the first magnetic block and the electromagnet are the same.

[0016] By adopting the above technical solution, when the fan stops working, the electromagnet starts automatically, so that it pushes the cleaning member to slide and reset along the blade through the magnetic effect, thereby scraping off and cleaning the dust attached to the outer side of the blade when working.

[0017] Preferably, the outer side of the connecting piece is threadedly connected to a collecting piece, and a sealing piece is slidably provided on the inner side of the collecting piece, and a pull rod is fixedly connected to the outer side of the sealing piece, and the pull rod passes through the collecting piece and forms an elastic telescopic structure with it, and the end of the pull rod away from the collecting piece is fixedly connected to a second magnetic piece, and a spring is connected between the second magnetic piece and the collecting piece, and a third magnetic piece is fixedly connected to the inner side of the air inlet, and the positions of the third magnetic piece and the second magnetic piece correspond and are both annular structures, and the magnetic poles of the opposing surfaces of the third magnetic piece and the second magnetic piece are opposite.

[0018] By adopting the above technical solution, when the cleaning member slides and resets, when the second magnetic sheet approaches the third magnetic sheet, the sealing sheet will be pulled to move through the pull rod.

[0019] Preferably, the connecting member and the internal cavity of the cleaning member are connected, and a one-way dust suction hole is opened on the cleaning member, and the connecting member and the collecting member are connected through a one-way valve pipe, and the collecting member is connected with a filter air hole for exhaust.

[0020] By adopting the above technical solution, when the sealing sheet moves, the collecting piece can extract the scraped dust through the dust suction hole, and discharge the air after filtering through the filter pores, thereby realizing automatic collection and storage of dust. The collecting piece can be disassembled later to clean the internal dust.

[0021] Preferably, the embedded part is arranged in an annular structure, and the cross section of the embedded part is arranged in a concave-shaped structure, and the elastic liquid sac is arranged in an annular structure, and the inner ring of the elastic liquid sac is evenly and fixedly connected with a centrifugal block.

[0022] By adopting the above technical solution, when the first side plate drives the embedded part and the elastic liquid bag to rotate, the centrifugal block will automatically squeeze the elastic liquid bag under the action of centrifugal force.

[0023] Preferably, the elastic liquid bag is divided into two spaces by a filter, and the liquid inlet end of the oil injection pipe is located on the outside of the filter, while the liquid outlet end of the oil suction pipe is located on the inside of the filter, and a sealing material port for cleaning waste chips is opened on the elastic liquid bag, and the liquid outlet of the oil injection pipe faces the shaft of the drive motor.

[0024] By adopting the above technical solution, when the centrifugal block squeezes the elastic liquid bag, the lubricating oil stored inside it can be sprayed toward the shaft of the drive motor through the oil spray pipe to achieve automatic lubrication. When the elastic liquid bag is reset, the dripping oil can be sucked in through the oil suction pipe, and the impurities in the oil can be effectively centrifugally filtered through the filter in the subsequent rotation.

[0025] Compared with the prior art, the beneficial effects of the present invention are: the high power density centrifugal fan can automatically clean the blades after a single work is completed, and can filter and circulate the lubricating oil by using the centrifugal force of the rotating blades, thereby effectively improving the lubrication effect. The specific contents are as follows;

[0026] 1. A cleaning part and a counterweight are provided. Through the high-speed rotation of the blade, the cleaning part on the outside of the blade can slide under the centrifugal force of the counterweight. At this time, the cleaning part can scrape off the dust and the like attached to the outside of the blade, and the scraped dust and impurities can be adsorbed by electrostatic action to prevent them from escaping;

[0027] 2. A collecting piece and a sealing piece are provided. When the collecting piece is close to the third magnetic piece, the second magnetic piece and the third magnetic piece are attracted and brought close to each other under the action of magnetic force. At this time, the second magnetic piece pulls the sealing piece to move inside the collecting piece through the pull rod, so that the collecting piece can absorb dust through the dust suction hole, and when the sealing piece is reset, the gas is filtered and discharged through the filter pores, and the collecting piece can be disassembled and cleaned in subsequent use;

[0028] 3. An embedded part, an elastic liquid bag and a filter are provided. With the rotation of the first side plate, the embedded part and the elastic liquid bag on the outside thereof will drive the centrifugal block to rotate synchronously, so that the centrifugal block squeezes the elastic liquid bag under the action of centrifugal force. The lubricating oil in the elastic liquid bag is sprayed evenly to the shaft of the driving motor through the oil spray pipe to realize automatic lubrication and flushing. When the elastic liquid bag recovers its elasticity, the elastic liquid bag will absorb the dripping oil through the oil suction pipe, and in the process of rotation, it will be centrifugally filtered through the filter to realize automatic filtration of wear and waste, and ensure the cleanliness of the subsequent lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0031] Figure 3 It is a schematic diagram of the cross-sectional structure of the casing of the present invention;

[0032] Figure 4 This is a schematic diagram of the blade installation structure of the present invention;

[0033] Figure 5 This is a schematic diagram of the three-dimensional structure of the cleaning component of the present invention;

[0034] Figure 6 This is a schematic diagram of the disassembled structure of the cleaning component of the present invention;

[0035] Figure 7 This is a schematic cross-sectional view of the cleaning component of the present invention;

[0036] Figure 8 For the present invention Figure 7 The enlarged structural diagram at A in the middle;

[0037] Fig. 9 It is a schematic cross-sectional view of the lubrication assembly of the present invention;

[0038] Fig.10 For the present invention Fig. 9 Enlarged structural diagram at B in the middle.

[0039] In the figure: 1. casing; 2. air inlet; 3. air outlet; 4. driving motor; 5. first side panel; 6. blades; 7. second side panel; 8. cleaning assembly; 801. connecting piece; 802. cleaning piece; 8021. dust suction hole; 803. counterweight piece; 804. collecting piece; 805. first magnetic block; 806. sealing piece; 807. pull rod; 808. second magnetic piece; 809. spring; 9. electromagnet; 10. third magnetic piece; 11. lubricating assembly; 1101. embedded piece; 1102. elastic liquid bag; 1103. centrifugal block; 1104. fuel injection pipe; 1105. fuel suction pipe; 1106. filter. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Example 1: Please refer to Figure 1-Figure 8 As shown, it is inconvenient for the existing high-power density centrifugal fan to automatically clean the dust on the fan blades after a single work is completed. In order to solve this technical problem, the present embodiment discloses the following technical content: a high-power density centrifugal fan, comprising a casing 1 fixedly installed in a factory building, and the side and upper surfaces of the casing 1 are respectively provided with an air inlet 2 and an air outlet 3, and a driving motor 4 is fixedly installed on the outer side of the casing 1, and an impeller assembly is fixedly installed at the output end of the driving motor 4, and the driving motor 4 includes a first side plate 5 fixedly installed at the output end of the driving motor 4, and blades 6 are evenly fixedly installed on the outer side of the first side plate 5, and the end of the blade 6 away from the first side plate 5 is fixedly connected to the second side plate 7;

[0042] It also includes: a cleaning assembly 8, which is installed on the outside of the blade 6 and is used to automatically clean the blade 6. The cleaning assembly 8 includes a cleaning member 802 sleeved on the outside of the blade 6, and a connecting member 801 is fixedly connected to the side of the cleaning member 802 close to the output end of the drive motor 4, and a counterweight 803 is fixedly installed on the outside of the cleaning member 802; the blade 6 is arranged in an inclined shape, and the second side plate 7 connected to the outside of the blade 6 is arranged in an annular structure, and the second side plate 7 and the air inlet 2 are arranged coaxially. The cleaning member 802 is arranged in an annular structure, and the annular inner wall of the cleaning member 802 is attached to the outer wall of the blade 6, and the counterweight 803 on the outside of the cleaning member 802 is arranged inclined toward the drive motor 4.

[0043] The cleaning member 802 is made of rubber material, and generates static electricity through friction with the blade 6. A first magnetic block 805 is fixedly installed on one side of the connecting member 801 close to the first side plate 5, and an electromagnet 9 is fixedly installed on the inner wall of the housing 1, and the positions of the electromagnet 9 and the first magnetic block 805 are correspondingly arranged, and the magnetic poles of the first magnetic block 805 and the opposite surfaces of the electromagnet 9 are the same.

[0044] The outer side of the connecting member 801 is threadedly connected to the collecting member 804, and a sealing sheet 806 is slidably provided on the inner side of the collecting member 804, and a pull rod 807 is fixedly connected to the outer side of the sealing sheet 806. At the same time, the pull rod 807 passes through the collecting member 804 and forms an elastic telescopic structure with it. The end of the pull rod 807 away from the collecting member 804 is fixedly connected to the second magnetic sheet 808, and a spring 809 is connected between the second magnetic sheet 808 and the collecting member 804. A third magnetic sheet 10 is fixedly connected to the inner side of the air inlet 2, and the positions of the third magnetic sheet 10 and the second magnetic sheet 808 correspond and are both annular structures, and the magnetic poles of the opposing surfaces of the third magnetic sheet 10 and the second magnetic sheet 808 are opposite.

[0045] The connecting member 801 and the cleaning member 802 are connected to each other, and the cleaning member 802 is provided with a one-way dust suction hole 8021, and the connecting member 801 and the collecting member 804 are connected through a one-way valve pipe, and the collecting member 804 is connected with a filter hole for exhaust.

[0046] When the fan is started, the driving motor 4 will drive the first side plate 5, the blade 6, and the second side plate 7 to rotate synchronously, so that the counterweight 803 on the outside of the blade 6 will drive the cleaning member 802 to slide along the surface of the blade 6 under the action of centrifugal force and approach the first side plate 5. When the fan is finished, the blade 6 stops rotating, and the electromagnet 9 is automatically connected to generate a repulsive magnetic force with the first magnetic block 805, thereby pushing the connecting member 801 and the cleaning member 802 to slide and reset. At this time, the cleaning member 802 will automatically clean the dust and the like attached to the blade 6 during a single working process. The friction of sheet 6 will generate a certain amount of static electricity to absorb the scraped dust, and when the second magnetic sheet 808 is close to the third magnetic sheet 10, the second magnetic sheet 808 will pull the sealing sheet 806 to slide on the inner side of the collecting piece 804 through the pull rod 807 under the action of magnetic force, so that the collecting piece 804 can absorb the scraped dust through the dust suction holes 8021 on the cleaning piece 802 under the action of negative pressure, and when the sealing sheet 806 is elastically reset, the filter pores can filter the dust to ensure that the collecting piece 804 can collect the dust. By disassembling the collecting piece 804 later, centralized treatment of the dust can be achieved.

[0047] Embodiment 2: The technical content disclosed in this embodiment is a further improvement on the above embodiment 1. The existing high power density centrifugal fan has a single lubrication method during use, and the waste chips generated by wear will be mixed in the lubricating oil, thereby increasing wear. In order to further solve this technical problem, this embodiment discloses the following technical content, such as Figure 9-10 As shown, the lubrication assembly 11 is installed on the outer side of the first side plate 5 to realize the filtering and circulation of the lubricating oil. The lubrication assembly 11 includes an insert 1101 fixedly installed on the outer side of the first side plate 5, and an elastic liquid capsule 1102 is embedded and installed on the inner side of the insert 1101, and a filter 1106 is fixedly installed on the inner side of the elastic liquid capsule 1102. At the same time, the elastic liquid capsule 1102 is evenly connected with an oil injection pipe 1104 and an oil suction pipe 1105 to realize the circulation and transportation of the lubricating oil.

[0048] The insert 1101 is provided in an annular structure, and the cross section of the insert 1101 is provided in a concave shape, and the elastic liquid capsule 1102 is provided in an annular structure, and the inner ring of the elastic liquid capsule 1102 is evenly fixedly connected with the centrifugal block 1103;

[0049] The elastic liquid sac 1102 is divided into two spaces by the filter 1106, and the liquid inlet end of the oil injection pipe 1104 is located on the outside of the filter 1106, while the liquid outlet end of the oil suction pipe 1105 is located on the inside of the filter 1106, and a sealing material port for cleaning waste chips is opened on the elastic liquid sac 1102, and the liquid outlet of the oil injection pipe 1104 is toward the shaft of the drive motor 4.

[0050] When the first side plate 5 rotates, the embedded parts 1101 and the elastic liquid capsule 1102 on its outer side will drive the centrifugal block 1103 to rotate synchronously, so that the centrifugal block 1103 squeezes the elastic liquid capsule 1102 under the action of centrifugal force, so that the lubricating oil in the elastic liquid capsule 1102 is evenly sprayed to the shaft of the driving motor 4 through the oil injection pipe 1104, thereby realizing automatic lubrication and flushing. When the elastic liquid capsule 1102 recovers its elasticity, the elastic liquid capsule 1102 will suck in the dripping oil through the oil suction pipe 1105, and during the rotation process, it will be centrifugally filtered through the filter screen 1106, thereby realizing automatic filtration of wear waste and ensuring the cleanliness of the subsequent lubricating oil.

[0051] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0052] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high power density centrifugal fan, comprising a casing (1) fixedly mounted on a factory building, wherein the side and upper surfaces of the casing (1) are respectively provided with an air inlet (2) and an air outlet (3), and a driving motor (4) is fixedly mounted on the outer side of the casing (1), and an impeller assembly is fixedly mounted on the output end of the driving motor (4), wherein the driving motor (4) comprises a first side plate (5) fixedly mounted on the output end of the driving motor (4), and blades (6) are evenly fixedly mounted on the outer side of the first side plate (5), and an end of the blade (6) away from the first side plate (5) is fixedly connected to a second side plate (7); It is characterized in that Also includes: A cleaning assembly (8) is mounted on the outside of the blade (6) and is used to automatically clean the blade (6), the cleaning assembly (8) comprising a cleaning member (802) sleeved on the outside of the blade (6), a connecting member (801) being fixedly connected to a side of the cleaning member (802) close to an output end of the drive motor (4), and a counterweight member (803) being fixedly mounted on the outside of the cleaning member (802); A lubrication component (11) is installed on the outside of the first side plate (5) and is used to filter and circulate lubricating oil. The lubrication component (11) includes an embedded component (1101) fixedly installed on the outside of the first side plate (5), and an elastic liquid capsule (1102) is embedded and installed on the inner side of the embedded component (1101), and a filter (1106) is fixedly installed on the inner side of the elastic liquid capsule (1102). At the same time, the elastic liquid capsule (1102) is evenly connected with an oil injection pipe (1104) and an oil suction pipe (1105) to realize the circulation and transportation of lubricating oil. The embedded component (1101) is arranged in an annular structure, and the embedded component The cross-section of (1101) is arranged in a concave-shaped structure, and the elastic liquid capsule (1102) is arranged in a ring-shaped structure. At the same time, the inner ring of the elastic liquid capsule (1102) is evenly fixedly connected with a centrifugal block (1103). The elastic liquid capsule (1102) is divided into two spaces by a filter (1106), and the liquid inlet end of the oil injection pipe (1104) is located on the outside of the filter (1106), while the liquid outlet end of the oil suction pipe (1105) is located on the inside of the filter (1106). In addition, a sealing material port for cleaning waste chips is opened on the elastic liquid capsule (1102), and the liquid outlet of the oil injection pipe (1104) faces the shaft of the drive motor (4).

2. A high power density centrifugal fan according to claim 1, characterized in that: The blades (6) are arranged in an inclined shape, and the second side plate (7) connected to the outside of the blades (6) is arranged in an annular structure, and the second side plate (7) and the air inlet (2) are arranged coaxially.

3. A high power density centrifugal fan according to claim 1, characterized in that: The cleaning member (802) is arranged in an annular structure, and the annular inner wall of the cleaning member (802) is fitted to the outer wall of the blade (6), and the counterweight member (803) outside the cleaning member (802) is arranged to be inclined toward the drive motor (4).

4. A high power density centrifugal fan according to claim 1, characterized in that: The cleaning member (802) is made of rubber material, and the cleaning member (802) generates static electricity through friction with the blade (6).

5. A high power density centrifugal fan according to claim 1, characterized in that: A first magnetic block (805) is fixedly mounted on one side of the connecting member (801) close to the first side plate (5), and an electromagnet (9) is fixedly mounted on the inner wall of the housing (1), and the positions of the electromagnet (9) and the first magnetic block (805) are correspondingly arranged, and the magnetic poles of the opposing surfaces of the first magnetic block (805) and the electromagnet (9) are the same.

6. A high power density centrifugal fan according to claim 1, characterized in that: The outer side of the connecting member (801) is threadedly connected to a collecting member (804), and a sealing sheet (806) is slidably provided on the inner side of the collecting member (804), and a pull rod (807) is fixedly connected to the outer side of the sealing member (806), and the pull rod (807) passes through the collecting member (804) and forms an elastic telescopic structure therewith, and the end of the pull rod (807) away from the collecting member (804) is fixedly connected to a second magnetic sheet (808), and a spring (809) is connected between the second magnetic sheet (808) and the collecting member (804), and the inner side of the air inlet (2) is fixedly connected to a third magnetic sheet (10), and the positions of the third magnetic sheet (10) and the second magnetic sheet (808) correspond and are both annular structures, and the magnetic poles of the opposing surfaces of the third magnetic sheet (10) and the second magnetic sheet (808) are opposite.

7. A high power density centrifugal fan according to claim 6, characterized in that: The connecting member (801) and the cleaning member (802) are connected to each other in their internal cavities, and the cleaning member (802) is provided with a one-way dust suction hole (8021), and the connecting member (801) and the collecting member (804) are connected via a one-way valve pipe, while the collecting member (804) is connected with a filter air hole for exhausting air.

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