Centrifugal fan provided with centrifugal force strengthening separation device

Abstract

The invention relates to a centrifugal fan provided with a centrifugal force strengthening separation device, and belongs to the field of air purification. The technical problem that peculiar smell cannot be removed due to air turbulence and leakage filtration is mainly solved. According to the technical scheme, an annular separation plate is provided with a fan outlet and is inversely arranged at the upper end of a separation box body, the fan outlet is provided with an air guide group plate to form an annular closed and directional air guide reinforced centrifugal force separation device, and the separation device is set as a primary separation chamber; an air guide plate of the air guide group plate enables air at an outlet of the fan to be strongly blown to an angular coaming end of an angular fan shell which is lengthened and enlarged in separation area to generate collision and turbulent flow gravity separation, and a secondary separation chamber is arranged; a sewage discharge water seal is arranged at the bottom of the separation box body, and an opening of the sewage discharge water seal faces upwards and is sleeved with a fan front plate, a fan rear plate and a surrounding plate to form an angular fan shell; the device has the remarkable effects of converting air turbulence, eliminating leakage filtration, improving the separation efficiency of particulate matters in air and being high in separation fineness, and the function of removing peculiar smell is achieved by adding related auxiliaries into water in a specific scene.

Description

Technical Field

[0001] The invention relates to a centrifugal fan equipped with an enhanced centrifugal force separation device, which belongs to the field of air purification and separation of oil smoke and particulate matter in gas, and is particularly aimed at air replacement and odor purification in specific scenes. Background Art

[0002] In the prior art, a filter screen, a bag, an electrostatic dust collector and other devices with adsorption and separation functions are installed at the outer end of a centrifugal fan to remove dust, oil smoke, particulate matter, etc. in the air. The above method can be summarized as a grid filtration technology. When the gas containing particulate matter passes through the grid, the particulate matter can also pass through at the same time, resulting in leakage. When this technical method is used, the grid will be blocked and cannot be used. At the same time, this technical method cannot achieve fine separation processing, and the finer the grid, the easier it is to be blocked. In view of the above technical difficulties, patent technology No. ZL201621072230.x of centrifugal fan equipped with oil fume gas separation and air purification device discloses a centrifugal fan equipped with oil fume gas separation and air purification device. The main structure of the fan is to install a separation box body under the existing centrifugal fan housing, so that the wind body forms a decompression space at the separation box body. Due to the principle of gravity acceleration, the particles change the fluid permeability direction at the separation box body under the action of centrifugal force, so that the particles are separated and collected, thus changing the traditional grid filtration and particle separation technical method. The combination of centrifugal fan and separation box body makes the structural form and function of centrifugal fan have important improvements. The improved centrifugal fan has undoubtedly made qualitative changes in the accuracy, efficiency and convenience of separating particles compared with traditional methods, and the technical method has made new breakthroughs. However, some problems also arise:

[0003] Technical difficulty 1: the distance between the bottom of the separation box and the volute tongue is large, the lower end of the volute tongue is mainly used for exhaust, and the uncontrolled wind body will leak; technical difficulty 2: the pressure difference generated by the wind wheel of the centrifugal fan causes turbulence in the wind body in the fan housing, which causes the water body to not flow in an orderly manner and some water body splashes out. Patent ZL201621072230.x is a centrifugal fan equipped with a device for separating oil fume gas and purifying air, and attempts to install an air regulating plate group between the volute tongue and the water film nozzle to solve the technical difficulties of wind turbulence and disorderly water splashing. However, due to the small space between the wind wheel at the volute tongue of the fan housing and the fan housing enclosure, the adjustment area of ​​the air regulating plate group is small, the effect is limited, the technical adjustment sensitivity is high, the adjustment is difficult to finalize, and it is difficult to eliminate water splashing. Regarding the first technical difficulty, the technical difficulty of leakage filtration of uncontrolled wind body, the centrifugal fan equipped with a centrifugal separation device has been technically improved according to the invention patent No. ZL201811284526.1; the improved technical solution eliminates water splashing and the leakage filtration is also significantly improved, but because the air outlet is simply moved downward, it only changes the air outlet position to reduce the air outlet area to reduce the leakage filtration, and it is difficult to eliminate the leakage filtration fundamentally.

[0004] Technical difficulty 1: The simple fan outlet setting makes the centrifugal separation pass through the water film body, the fan outlet, and then through the water surface filtration of the separation box body. The running trajectory of the intermediate wind body is relatively stable and the wind pressure changes less. The wind wheel wind body of the fan housing blows to the water model body on the surface of the enclosure, which produces resistance and forms laminar flow, making it difficult for particles to touch the water film body and cause leakage, and cannot improve the separation efficiency and separation accuracy.

[0005] Technical difficulty 2: As the height, angle and force of the air outlet change when the volute tongue moves downward, the wind body is affected by the enclosure and separation box, causing resistance rebound and turbulence, and the wind body lacks guidance, resulting in leakage. Summary of the invention

[0006] The purpose of the present invention is to solve the above technical difficulties and provide a centrifugal fan equipped with an enhanced centrifugal force separation device, which has the function of changing the separation mode in the fan housing and changing the fan outlet form, so that the wind resistance and laminar flow are controlled and converted into separation power.

[0007] Another object of the present invention is to increase the space at the fan outlet end in the fan housing, relieve the wind pressure, and make the wind body directional and orderly, so as to enhance the filtering quality, change the wind body turbulence, eliminate leakage, and improve the separation efficiency and separation fineness of particulate matter in the air. A centrifugal fan equipped with an enhanced centrifugal force separation device.

[0008] The final purpose of the present invention is to strengthen the separation force in a specific scenario, utilize the water purification characteristics, adopt chemical additives to expand the purification function, and add relevant additives to the water to have the function of removing odor. A centrifugal fan equipped with an enhanced centrifugal force separation device is provided.

[0009] The technical solution adopted by the present invention to solve the above technical difficulties is: a centrifugal fan equipped with an enhanced centrifugal force separation device, including a centrifugal fan composed of a fan housing and a wind wheel, wherein: it also has an angular fan housing composed of a fan front plate, a fan rear plate, a surrounding plate, an annular separation plate, and a separation box body; the annular separation plate opening is set as a volute tongue opening inverted at one side of the separation box body, one end of the annular separation plate opening is provided with a volute tongue opening end, and the other end is provided with a bent plate vertically downward, which is connected to the fan front plate The plate, the fan rear plate, the angled enclosure plate and the lower enclosure plate form two openings facing downwards, wherein the bent plate end of the annular separation plate and the opening of the angled enclosure plate are set as upward through-ports, and the other end of the bent plate of the annular separation plate and the lower enclosure plate form a box body with the opening facing downwards, the separation box body is opened upwards, one end is inserted into the through-port, and the other end is inserted into the box body with the opening facing downwards, and the sewage is sealed at one end of the bottom of the separation box body, the drainage port is connected to the outside and is opposite to the box body; the wind guide group plate is provided with a plurality of wind guide plates with spacing in between, and the wind guide plates are arranged in strips with inclined surfaces facing the wind and facing downwards , the two ends are fixed by triangular plate frames, the air guide plate is arranged on one side of the triangular plate frame, and the other side of the triangular plate frame is provided with an inner curved angle, the air guide group plate is horizontally placed on the inner wall of the angular fan housing and forms a water stop plate notch with the inner wall of the fan front plate and the fan rear plate, the water stop plate notch is arranged to face the wind, one end of the water stop plate notch is connected with the lower edge of the fan front plate and the fan inlet inner wall, and the other end of the water stop plate notch is placed in the bottom of the separation box body, the height of the water stop plate notch of the fan rear plate is consistent with the height of the water stop plate notch of the fan front plate, and the width of the air guide group plate is consistent with the thickness of the fan housing The angled enclosure is tangent to the maximum outer circular edge of one side of the angled fan housing; an air guide group plate is arranged at the lower end of the volute tongue opening of the annular separation plate, and one end of the annular separation plate is vertically bent and connected to the lower end of the air guide group plate to make the annular separation plate and the air guide group plate structure a closed and directional air-guiding annular body, which is set as a primary separation chamber; the outlet side of the air guide group plate, the separation box body and the angled enclosure form a secondary separation chamber; the angled enclosure side at the upper end of the angled fan housing is set as the fan outlet.

[0010] The present invention describes a centrifugal fan equipped with an enhanced centrifugal force separation device, wherein: it also includes a water film spray device consisting of an annular separation plate, a lower annular separation plate, a water film spray nozzle outlet, and a water supply pipe; the end plane of the lower annular separation plate overlaps with the upper end of the outer side of the arc line of the annular separation plate on one side of the center line of the angular fan housing to form a through-port groove body, the through-port groove body faces the inner wall of the lower annular separation plate, the water film spray nozzle outlet is arranged to face the inner wall of the lower annular separation plate, and the length of the through-port groove body and the length of the water film spray nozzle outlet are adapted to the thickness of the angular fan housing.

[0011] The centrifugal fan equipped with an enhanced centrifugal force separation device described in the present invention further includes an air regulating plate group composed of a plurality of air regulating plates, the air regulating plate group is arranged at the secondary separation chamber position at the bottom of the separation box body and is arranged toward the wind.

[0012] The present invention includes the above-mentioned centrifugal fan equipped with an enhanced centrifugal force separation device and a separation box body that are integrally assembled into an angular fan casing with a sewage seal, wherein: it also includes an angular fan casing composed of a fan front plate, a fan rear plate, an annular separation plate, an angular enclosure, and a separation box body, wherein: the lower ends of the fan front plate and the fan rear plate are integrally provided with a protruding square body and the two side ends are respectively provided with an angular enclosure, a lower enclosure, and a lower annular separation plate bent plate vertical end structure to form a separation box body wall panel, wherein: the vertical end of the lower annular separation plate bent plate and one side of the lower enclosure form a box body, and one side of the angular enclosure and the vertical end of the lower annular separation plate bent plate form an upward passage The opening of the separation box body is flush with that of the wall plate and faces downward, the opening of the separation box body faces upward and is inserted into the opening of the wall plate, and a sewage seal is provided at the bottom of the separation box body and is arranged relative to the box body; it also includes a water film spray device composed of an annular separation plate, a water supply pipe, a water film spray nozzle outlet, and a lower annular separation plate; the lower annular separation plate is overlapped at the outer end plane of the annular separation plate, and a through-port groove body is formed at the upper end on one side of the center line of the angular wind shell body between the front plate and the rear plate of the fan, and the two planes of the through-port groove body face the inner wall of the lower annular separation plate, and the outlet of the water film spray nozzle is arranged to face the inner wall of the lower annular separation plate, and the length of the through-port groove body and the length of the water film spray nozzle outlet are adapted to the thickness of the angular fan shell.

[0013] A centrifugal fan equipped with an enhanced centrifugal force separation device described in the present invention is integrally assembled with a separation box body to form an angular fan housing with a sewage seal, wherein: it also includes an air guide assembly plate composed of a triangular plate frame, an air guide plate, and a water stop plate slot. The triangular plate frame of the air guide assembly plate is integrally assembled with the water stop plate slot. There are a number of air guide plates with intervals, and a triangular plate frame is fixed at each end. One side of the triangular plate frame is equipped with a number of air guide plates, and the other side is bent inward at an angle; the air guide assembly plate is horizontally mounted on the lower end of the fan front plate, and the side of the triangular plate frame that is bent inward at an angle forms a water stop plate slot with the inner walls of the fan front plate and the fan rear plate and is arranged facing the wind, and the inclined surface of the air guide plate is arranged downward facing the wind on the other side of the triangular plate frame.

[0014] The present invention includes the centrifugal fan equipped with the enhanced centrifugal force separation device and the separation box body integrally assembled into an angular fan housing with a sewage discharge seal, wherein: it includes an angular fan housing assembled into a double-body circulation separation by two angular fan housings, wherein: the fan front plate and the fan rear plate of an angular fan housing are interchanged to form two fan rear plate assembly, so that the center and shape of the angular fan housing are the same, and a separation box body is provided with a sewage discharge seal inserted into the lower end of the two fan housings; the two fan front plates are respectively provided with a front guide ring plate and a rear guide ring plate and are provided with a fan inlet and a fan front plate assembly, and the height of the guide ring plate is consistent with the height of the fan outlet, wherein: the rear guide ring plate is provided with a front guide ring plate, and the height of the fan outlet is consistent with the height of the fan outlet, wherein: the rear guide ring plate is provided with a front guide ring plate, and the height of the fan outlet is consistent with the height of the fan outlet, wherein: the rear guide ring plate is provided with a front guide ring plate, and the height of the fan front plate ... front guide ring plate is provided with a front guide ring plate, and the front guide ring plate is provided with a front guide ring plate, and the front guide ring plate is provided with a front guide ring plate, and the front guide ring plate is provided with a front guide ring plate, and the front guide ring plate is provided with a front guide ring plate, and the front guide ring plate is provided with a front guide ring plate, and the front guide ring plate is provided with a front guide ring plate, and The ring plate is provided with an opening at the upper end, and a rear air guide ring hood with an opening facing the inlet of the fan front plate is installed on the outer side of the opening. The duct bend plate is composed of a plane and a vertical surface to form an angular plate, which is installed on a plane formed by the fan front plate, the fan rear plate, the front air guide ring plate, the rear air guide ring plate, the air guide ring hood, and the upper ends of the fan outlets of the two angular fan casings. The vertical plate is installed on the annular separation plate. The duct bend plate forms a fan outlet channel of one angular fan casing connected to the fan inlet of the fan front plate of the other angular fan casing, wherein the fan outlet of one angular fan casing is arranged in the plane of the duct bend plate, and the fan outlet of the other angular fan casing is arranged outside the duct bend plate to form the fan outlet.

[0015] Beneficial Effects

[0016] The present invention adopts the technical solution of the above-mentioned structural form, and adds an air guide group plate at the outlet end of the volute tongue of the annular separation plate, so that the annular separation plate is closed and has the function of guiding ventilation. The annular separation plate and the separation group plate are assembled into an independent separation annular body device. In the relatively closed space of the annular separation plate, the static pressure in the annular separation plate of the air guide group plate is first increased. Secondly, the wind body produces fluid fluctuation changes at the outlet end of the air guide group plate. Due to the principle of gravity acceleration, the fluctuation frequency of particles in the wind body is increased, and the separation rate is improved, which changes the separation mode of separating particles to the water surface of the enclosure by simple centrifugal force, and forms a primary separation chamber in the relatively closed space of the annular separation plate; the outlet side of the air guide group plate and the angular enclosure plate are connected at the upper end of the separation box body and one side of the angular fan housing. The space is set as a secondary separation chamber; since the wind body is blown out from the gaps between the layers of the wind guide plates of the wind guide group plate, the blowing force of the wind body is directed strongly, orderly and fully controlled, the wind body from the wind guide group plate is blown out to the water surface of the separation box body to accelerate, and then blown to the side end of the angled enclosure after filtering. After impact, the particles enter the water downward for filtration and separation due to the principle of gravity acceleration; and because the wind body and the particles are blown out to produce a separation curve under the impact of the inclined surface of the wind guide plate, although the blown wind body hits the angled enclosure and the separation box body rebounds to produce resistance and turbulence, the wind body is strong downward, the wind body has a lighter specific gravity than the particles upward, and the particles have a greater specific gravity than the wind body downward. Therefore, in the directional turbulence of the wind body, the particles are separated and filtered again in the secondary separation chamber. The setting of the angled enclosure and the angled fan housing and the outlet side of the separation group plate expands the area and space. Therefore, the wind pressure is reduced and the turbulence is also reduced accordingly, which is beneficial to the downward inertial acceleration and stabilization of particles in the turbulent flow; the setting of the angled fan housing and the air guide group plate, the overall shape, separation angle and separation position of the angled fan housing make the physical gravity separation properties more sufficient and reasonable; the separation mode is changed in the angled fan housing, so that the stable process of the pure centrifugal force plus water membrane separation mode produces multiple turns at the inlet end, outlet end, angled enclosure side and even in the secondary separation chamber of the air guide group plate, so that the gravity acceleration separation principle produces unexpected significant effects.

[0017] The improved technical solution has significantly transformed the original separation mode, orderly controlling wind turbulence and particle-guided separation, eliminating leakage, improving separation quality and efficiency, raising the separation fineness to a new level, and having a powerful odor removal function.

[0018] The present invention is provided with a double-body circulation separation structure, which has a transient separation and purification function under extreme environments and has unexpectedly significant effects.

[0019] The invention has a concise and centralized structure and is convenient for production and processing.

[0020] The present invention constructs a multi-scenario application platform for separating particulate matter, removing dust, removing oil stains, and purifying the air. It integrates multiple functions into a new type of fan, and integrates multiple physical, mechanical, and chemical technical means and methods to expand the field of air purification in multiple aspects: adding oil cleaning agents to avoid oil cleaning devices; using corresponding additives for specific environments helps to eliminate odors and improve the environment.

[0021] The improved technical solution of the present invention has novel structure, innovative process and achieves unexpected significant effect.

[0022] The centrifugal fan equipped with a centrifugal separation device in the present invention and invention patent No. ZL201811284526.1 forms a series configuration with different contents of particulate matter in the background air. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of installing an air guide plate assembly on the front plate of the fan according to the present invention;

[0024] Figure 2 This is a view in the direction of A of the present invention in which the air guide assembly plate is installed on the front plate of the fan;

[0025] Figure 3 It is a schematic diagram of the structure of the water film spray nozzle installed in the present invention;

[0026] Figure 4 It is a structural schematic diagram of the air regulating plate group installed in the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the angular fan housing with a sewage seal which is integrally assembled with the separation box body of the present invention;

[0028] Figure 6 yes Figure 5 B-direction view;

[0029] Figure 7 yes Figure 6 2---2 side view;

[0030] Figure 8 yes Figure 7 3---3 top view;

[0031] Fig. 9 It is a schematic diagram of the use of the air purifier of the present invention. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below with reference to the accompanying drawings.

[0033] Example 1

[0034] like Figure 1 , Figure 2As shown, a centrifugal fan equipped with an enhanced centrifugal force separation device in this embodiment includes an angular fan housing 1 and a wind wheel 5, wherein: it also includes a fan front plate 7, a fan rear plate 8, an angular enclosure 20, a lower enclosure 10, an annular separation plate 6, and a separation box body 11, which constitute the angular fan housing 1; the opening of the annular separation plate 6 is set as a volute tongue opening 19 inverted at one side of the upper end of the separation box body 11, and one end of the opening of the annular separation plate 21 is provided with a volute tongue opening 19, and the other end is provided with a bent plate vertically downward, and the fan front plate 7, the fan rear plate 8, the angular enclosure 20 , the lower enclosure 10 forms two openings facing downward, wherein the bent plate end of the annular separation plate 6 and the opening of the angular enclosure 20 are set as upward through openings, the other end of the bent plate of the annular separation plate 6 and the lower enclosure 10 form a box body 13 with an opening facing downward, the separation box body 11 opens upward, one end is inserted into the through opening, and the other end is inserted into the box body with an opening facing downward, and the sewage seal 12 is set at one end of the bottom of the separation box body 11, the drainage port is connected to the outside and is opposite to the box body 13; the wind guide group plate 15 is provided with a plurality of wind guide plates 17 with a spacing in the middle, the wind guide plates 17 are arranged in a strip-shaped inclined surface facing downward and facing the wind, and the two ends are fixed by a triangular plate frame 18 The wind guide plate 17 is arranged on one side of the triangular plate frame 18, and the other side of the triangular plate frame 18 is provided with an inner bend angle. The wind guide group plate 15 is horizontally placed on the inner wall of the angular fan housing and the inner walls of the fan front plate 7 and the fan rear plate 8 to form a water stop plate notch 14. The water stop plate notch 14 is arranged to face the wind, one end of the water stop plate notch 14 is connected to the lower edge of the inner wall of the fan front plate 7 and the fan inlet 3, and the other end of the water stop plate notch 14 is placed in the bottom of the separation box body 11. The height of the water stop plate notch 14 of the fan rear plate 8 is consistent with the height of the water stop plate notch 14 of the fan front plate 7, and the width of the wind guide group plate 15 is consistent with the thickness of the angular fan housing 1 The annular separation plate 6 is provided with an air guide plate 15 at the lower end of the volute tongue opening 19, and the upper end of the vertical curved plate at one end of the annular separation plate 6 is connected and assembled with the lower end of the air guide plate 15, so that the annular separation plate 6 and the air guide plate 15 structure form a closed and directional air-guiding annular body, and the closed and directional air-guiding annular body is set as a primary separation chamber 9; the outlet side of the air guide plate 15 and the separation box body 11 and the angular enclosure 20 constitute a secondary separation chamber; the side of the angular enclosure 20 at the upper end of the angular fan housing 1 is set as the fan outlet 2.

[0035] Example 2

[0036] like Figure 1 , Figure 2 , Figure 3As shown, a centrifugal fan equipped with an enhanced centrifugal force separation device in this embodiment, wherein: it also includes a water film spray device consisting of an annular separation plate 21, a lower annular separation plate 25, a water film spray nozzle outlet 23, and a water supply pipe 22; the end plane of the lower annular separation plate 25 overlaps with the upper end of the outer side of the arc of the annular separation plate 21 on one side of the center line 4 of the angular fan housing 1 to form a through slot body 24, the through slot body 24 faces the inner wall of the lower annular separation plate 25, the water film spray nozzle outlet 23 is arranged to face the inner wall of the lower annular separation plate 25, and the length of the through slot body 24 and the length of the water film spray nozzle outlet 23 are adapted to the thickness of the angular fan housing 21.

[0037] Example 3

[0038] like Figure 4 As shown, a centrifugal fan equipped with an enhanced centrifugal force separation device in this embodiment is based on Example 2, wherein: it also includes an air regulating plate group 26 composed of a plurality of air regulating plates, and the air regulating plate group 26 is arranged at the secondary separation chamber 16 at the bottom of the separation box body 11, and is arranged toward the wind.

[0039] Example 4

[0040] like Figure 3 , Figure 4 As shown, this embodiment is an angular fan casing 1 with a sewage seal 12 integrally assembled with a separation box body 11 of the present invention, and is based on embodiment 2 including embodiment 3, wherein: it also includes an angular fan casing 1 composed of a fan front plate 7, a fan rear plate 8, an annular separation plate 21, an angular enclosure 20, and a separation box body 11, wherein: the fan front plate 7 and the fan rear plate 8 are integrally provided with a protruding square body at the lower end and the two side ends are respectively provided with an angular enclosure 20, a lower enclosure 10, and a lower annular separation plate 25 bent plate vertical end structure to form a separation box body 11 wall panel, wherein: the annular separation plate 21 bent plate vertical end and one side of the lower enclosure 10 are structured into a box body 13, and one side of the angular enclosure 20 and the annular separation plate 21 bent plate vertical end form an upward through opening, the The lower end of the wall panel is flush and the opening is facing downward. The opening of the separation box body 11 is facing upward and is inserted into the opening of the wall panel. A sewage seal 12 is provided at the bottom of the separation box body 11 and is arranged relative to the box body 13; it also includes a water film spray device composed of an annular separation plate 21, a water supply pipe 22, a water film spray nozzle outlet 23, and a lower annular separation plate 25; the lower annular separation plate 25 is overlapped at the outer end plane of the annular separation plate 21, and a through-port groove body 24 is formed at the upper end on one side of the center line 4 of the angular wind shell body 1 between the fan front plate 7 and the fan rear plate 8. The two planes of the through-port groove body 24 face the inner wall of the lower annular separation plate 25, and the water film spray nozzle outlet 23 is arranged to face the inner wall of the lower annular separation plate 25. The length of the through-port groove body 24 and the length of the water film spray nozzle outlet 23 are adapted to the thickness of the angular fan shell 1.

[0041] Example 5

[0042] like Figure 2 As shown. This embodiment is an angular fan housing 1 with a sewage seal 12 integrally assembled with a separation box body 11 of the present invention, and is based on the embodiment 4, wherein: it includes an air guide assembly 15 composed of a triangular frame 18, an air guide plate 17, and a water stop plate notch 14, the triangular frame 18 of the air guide assembly 15 is integrally assembled with the water stop plate notch 14, a plurality of air guide plates 17 are provided with a spacing, a triangular frame 18 is fixed at each end, a plurality of air guide plates 17 are assembled on one side of the triangular frame 18, and the other side is bent inward at an angle; the air guide assembly 15 is transversely assembled at the lower end of the fan front plate 7, the inwardly bent side of the triangular frame 18 forms a water stop plate notch 14 with the inner wall of the fan front plate 7 and the fan rear plate 8 and is arranged facing the wind, and the inclined surface of the air guide plate 17 is arranged facing the wind and downward on the other side of the triangular frame 18.

[0043] Example 6

[0044] like Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, this embodiment is an angular fan casing 1 integrally assembled with a separation box body 11 to form a double-body circulation with a sewage discharge seal 12, which is based on Embodiment 4 and Embodiment 5, wherein: it includes an angular fan casing 1 assembled into a double-body circulation separation by two angular fan casings 1, wherein: a fan front plate 7 and a fan rear plate 8 of an angular fan casing 1 are interchanged to form two fan rear plates 8 to make the center and shape of the angular fan casing 1 the same, a separation box body 11 is provided with a sewage discharge seal 12 which is inserted into the lower ends of the two angular fan casings 1; the two fan front plates 7 are respectively provided with a front air guide plate 29 and a rear air guide plate 30, the rear air guide plate 30 is provided with a fan inlet 3 and is assembled with the fan front plate 7, the front air guide plate 29 is at the same height as the fan outlet 2, wherein: the rear air guide plate 30 is at the upper end A rear air guide ring plate air outlet 27 opening is provided, and a rear air guide ring hood 31 with an opening facing the inlet of the fan front plate 7 is installed on the outer side of the opening. The air duct bend plate 28 is composed of a plane and a vertical surface, and is installed on a plane formed by the fan front plate 7, the fan rear plate 8, the front air guide ring plate 29, the rear air guide ring plate 30, the air guide ring hood 31, the fan outlet 2 of the two-corner fan housing 1, and the upper end of the fan outlet 32. The vertical panel of the air duct bend plate 28 is installed on the annular separation plate 21. The air duct bend plate 28 constitutes a fan outlet 2 channel of the one-corner fan housing 1 connected to the fan inlet 3 of the fan front plate 7 of the other-corner fan housing 1, wherein the fan outlet 2 of the one-corner fan housing 1 is arranged in the plane of the air duct bend plate 28, and the fan outlet 32 ​​of the other-corner fan housing is arranged outside the plane of the air duct bend plate 28 to constitute the fan outlet 32.

[0045] Example 7

[0046] like Fig. 9As shown, a centrifugal fan equipped with an enhanced centrifugal force separation device in this embodiment is based on Example 3, wherein: it includes an air purifier case 38, the angular fan housing 1 of the present invention is arranged in the air purifier case 38, a water tank 36 is provided at the lower end, a water pump inlet 35 and a water supply hose 33 are placed in the water tank 37, water is supplied to the angular fan housing 1 through the water film spray nozzle outlet 23, and then returns to the water tank 37 through the sewage seal 12 outlet.

Claims

1. A centrifugal fan equipped with an enhanced centrifugal force separation device, comprising a centrifugal fan consisting of a fan housing and a wind wheel, wherein: The fan housing is formed by a front plate, a rear plate, a surrounding plate, an annular separation plate, and a separation box body; the opening of the annular separation plate is set as a volute tongue opening inverted at the upper end of one side of the separation box body, one end of the annular separation plate opening is provided with a volute tongue opening end, and the other end is provided with a bent plate vertically downwards, forming two downward openings with the fan front plate, the fan rear plate, the angular surrounding plate, and the lower surrounding plate, wherein: the bent plate end of the annular separation plate and the angular surrounding plate opening are set as upward through-ports, and the other end of the bent plate of the annular separation plate and the lower surrounding plate form a box body with the opening facing downwards, the separation box body opening faces upwards, one end is inserted into the through-port, and the other end is inserted into the box body with the opening facing downwards, and the sewage seal is arranged at the drainage outlet at one end of the bottom of the separation box body, which is connected to the outside and is opposite to the box body; the wind guide group plate is provided with a plurality of wind guide plates with spacing in the middle, the wind guide plates are arranged in a strip-shaped inclined surface facing downwards and facing the wind, and are fixed at both ends by triangular plate frames, the wind guide plates are arranged on one side of the triangular plate frames, and the other side of the triangular plate frames is provided with an inner The wind guide plate is placed horizontally on the inner wall of the angular fan housing and forms a water stop plate slot with the inner walls of the fan front plate and the fan rear plate. The water stop plate slot is arranged to face the wind. One end of the water stop plate slot is connected to the lower edge of the fan front plate and the inner wall of the fan inlet, and the other end of the water stop plate slot is placed in the bottom of the separation box. The height of the water stop plate slot of the fan rear plate is consistent with the height of the water stop plate slot of the fan front plate. The width of the wind guide plate is consistent with the thickness of the fan housing. The angular enclosure is consistent with the angular fan housing. The annular separation plate is tangent to the maximum outer circular edge of the side; an air guide group plate is arranged at the lower end of the volute tongue opening, and the upper end of the vertical bent plate at one end of the annular separation plate is connected and assembled with the lower end of the air guide group plate, so that the annular separation plate and the air guide group plate structure become a closed and directional air-guiding annular body, and the closed and directional air-guiding annular body is set as a primary separation chamber; the outlet side of the air guide group plate, the separation box body and the angular enclosure form a secondary separation chamber; the angular enclosure side at the upper end of the angular fan housing is set as the fan outlet.

2. The centrifugal fan equipped with an enhanced centrifugal force separation device according to claim 1, characterized in that: It also includes a water film spray device consisting of a fan front plate, a fan rear plate, an annular separation plate, a lower annular separation plate, a water film spray nozzle outlet, and a water supply pipe; the end plane of the lower annular separation plate is overlapped with the upper end of the outer side of the arc line of the annular separation plate on one side of the center line of the angular fan housing to form a through-port groove body, the through-port groove body faces the inner wall of the lower annular separation plate, the water film spray nozzle outlet is arranged toward the inner wall of the lower annular separation plate, the through-port groove body is arranged between the fan front plate, the fan rear plate, and the length of the through-port groove body and the length of the water film spray nozzle outlet are adapted to the thickness of the angular fan housing.

3. A centrifugal fan equipped with an enhanced centrifugal force separation device according to claim 1 or 2, characterized in that: The utility model also comprises an air regulating plate group composed of a plurality of air regulating plates, wherein the air regulating plate group is arranged at the secondary separation chamber position at the bottom of the separation box body and is arranged toward the downwind.

4. A centrifugal fan equipped with an enhanced centrifugal force separation device and a separation box body are integrally assembled into an angular fan housing with a sewage seal, comprising claim 1, 2, or 3, characterized in that: It also includes an angular fan housing composed of a fan front plate, a fan rear plate, an annular separation plate, an angular enclosure, and a separation box body, wherein: the lower ends of the fan front plate and the fan rear plate are integrally provided with a protruding square body, and the two side ends are respectively provided with an angular enclosure, a lower enclosure, and a lower annular separation plate bent plate vertical end structure to form a separation box body wall plate, wherein: the vertical end of the lower annular separation plate bent plate and one side of the lower enclosure form a box body, one side of the angular enclosure and the vertical end of the lower annular separation plate bent plate form an upward through opening, the lower end of the wall plate is flush and the opening is downward, and the separation box body opening is upwardly inserted into the wall plate An opening is provided, and a sewage seal is provided at the bottom of the separation box body, which is arranged relative to the box body; it also includes a water film spray device composed of an annular separation plate, a water supply pipe, a water film spray nozzle outlet, and a lower annular separation plate; the lower annular separation plate is overlapped at the plane of the outer end portion of the annular separation plate, and a through-port groove body is formed at the upper end on one side of the center line of the angular wind shell body between the front plate and the rear plate of the fan, and the two planes of the through-port groove body face the inner wall of the lower annular separation plate, and the outlet of the water film spray nozzle is arranged to face the inner wall of the lower annular separation plate, and the length of the through-port groove body and the length of the water film spray nozzle outlet are adapted to the thickness of the angular fan shell.

5. According to claim 4, a centrifugal fan equipped with an enhanced centrifugal force separation device is integrally assembled with a separation box body to form an angular fan housing with a sewage seal, wherein: It includes an air guide plate assembly consisting of a triangular plate frame, an air guide plate, and a water stop plate slot. The triangular plate frame of the air guide plate assembly is integrally assembled with the water stop plate slot. There are a number of air guide plates with intervals. A triangular plate frame is fixed at each end. One side of the triangular plate frame is equipped with a number of air guide plates, and the other side is bent inward at an angle. The air guide plate assembly is horizontally assembled at the lower end of the fan front plate. The side of the triangular plate frame bent inward at an angle forms a water stop plate slot with the inner walls of the fan front plate and the fan rear plate and is arranged to face the wind. The inclined surface of the air guide plate is arranged downward to face the wind at the other side of the triangular plate frame.

6. According to claim 4 or 5, the centrifugal fan equipped with the enhanced centrifugal force separation device is integrally assembled with the separation box body to form an angular fan housing with a sewage seal, wherein: It includes an angular fan housing composed of two angular fan housings assembled into a double-body circulation separation, wherein: a fan front plate and a fan rear plate of an angular fan housing are interchanged to form two fan rear plates assembled, so that the center and shape of the angular fan housing are the same, a separation box body is provided with a sewage discharge seal sleeved into the lower end of the two angular fan housings; the two fan front plates are respectively provided with a front air guide plate and a rear air guide plate, the rear air guide plate is provided with a fan inlet and assembled with the fan front plate, and the height of the air guide plate is consistent with the height of the fan outlet, wherein: the rear air guide plate is provided with an opening at the upper end, and an opening facing the fan is arranged on the outer side of the opening The rear air guide ring hood at the front plate inlet, the air duct bend plate is an angular plate composed of a plane and a vertical surface, and is installed on a plane formed by the fan front plate, the fan rear plate, the front air guide ring plate, the rear air guide ring plate, the air guide ring hood, and the upper ends of the fan outlets of the two angular fan casings. The vertical panel of the air duct bend plate is installed on the annular separation plate. The air duct bend plate forms a fan outlet channel of one angular fan casing connected to the fan inlet of the fan front plate of the other angular fan casing, wherein: the fan outlet of one angular fan casing is arranged in the plane of the air duct bend plate, and the fan outlet of the other angular fan casing is arranged outside the plane of the air duct bend plate to form the fan outlet.

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