Suction generator, automatic ash discharging device and air purification device

Abstract

The utility model discloses a kind of suction generators, including detachably connected inner side wall and outer side wall, the first chamber for dust movement is enclosed by inner side wall, the second chamber and air duct for gas movement are enclosed by inner side wall and outer side wall, air duct is set in the end close to the first chamber dust discharge, fifth port is provided on outer side wall, after gas flows through fifth port, second chamber and air duct in turn, dust in the first chamber can be discharged to outside. The utility model discloses suction generator dust discharge capacity and can continue to discharge dust, effectively increase the total amount and speed of dust discharge in unit time, improve dust discharge efficiency, airflow moves smoothly inside suction generator, the negative pressure formed is big, conducive to dust rapid discharge, easy to disassemble and maintain, adapt to the air purification device of various specifications of existing, reduce production cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to engine intake filter technical field especially, relate to a kind of suction generator, and automatic ash removal device and air purification device containing the suction generator with it. BACKGROUND

[0002] Engine needs to inhale air when working, in order to reduce or prevent dust impurities in air into engine with airflow, air filter is usually set in engine intake system, and air is filtered by filter element. Although filter element has good filtering effect, but the cost of frequent replacement is very high, and it is inconvenient to replace.

[0003] The existing engine intake system is additionally provided with air prefilter before traditional air cleaner, to prefilter the air entering into filter element. Air prefilter can prefilter a large amount of dust and impurities, so that air cleaner can keep clean for a long time, thereby making the engine run more powerfully, and also prolonging the service life of filter element in air cleaner, reducing the replacement frequency and reducing the maintenance cost of engine.

[0004] However, a large amount of dust and impurities filtered by the air prefilter is collected in the closed dust collecting basin, which has limited capacity, and needs to be cleaned in time after being filled with dust and impurities, and the power machine loaded with the air prefilter needs to be stopped, and then the dust collecting basin is opened manually for cleaning. If not cleaned in time, the engine may be damaged, therefore, the structure of the air prefilter greatly reduces the working efficiency of cleaning the dust collecting basin, increases the working intensity and repetitive labor of personnel, has poor convenience and low economic benefit. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of suction generator, can automatically realize ash removal action, reach the effect of improving the working efficiency of ash removal and operation convenience. The specific technical scheme is as follows:

[0006] The suction generator of the utility model has the following advantages:

[0007] A kind of suction generator, including detachably connected inner side wall and outer side wall, the first chamber for dust movement is enclosed by inner side wall, the second chamber for gas movement and air duct are enclosed by inner side wall and outer side wall, air duct is set to the end close to the first chamber for discharging dust, fifth port is provided on outer side wall, after gas flows through fifth port, second chamber and air duct in sequence, dust in the first chamber can be discharged to outside.

[0008] Further, the air duct is annular structure.

[0009] Further, the air duct is arranged around the first chamber, and one end of the air duct is provided with an air inlet port in communication with the second chamber.

[0010] Further, the sixth chamber is arranged below the first chamber, one end of the sixth chamber is in communication with the air duct, and the other end is in communication with the outside of the suction generator, so that the gas is sequentially discharged to the outside of the suction generator through the air duct and the sixth chamber.

[0011] Further, the air duct is arranged obliquely, so that the gas discharged from the air duct can converge to the middle.

[0012] Further, the inner side wall comprises a first side wall and a second side wall arranged in connection, the inclination angle of the first side wall is greater than that of the second side wall, so that the dust can quickly fall and be discharged after converging in the first chamber.

[0013] Further, the outer side wall comprises a third side wall, a fourth side wall and a fifth side wall arranged in connection, the third side wall and the fourth side wall and the first side wall and the second side wall form the second chamber, and the fourth side wall gradually approaches the second side wall from top to bottom, so that the cross-sectional area of the second chamber gradually decreases from top to bottom.

[0014] Further, the second side wall of the inner side wall and the fifth side wall of the outer side wall form the air duct.

[0015] Further, the bottom of the fifth side wall protrudes from the bottom of the second side wall to form the sixth chamber, which can guide the gas discharged through the air duct to converge below the first chamber.

[0016] Further, the inner side wall further comprises a first flange and a second flange, and the outer side wall further comprises a third flange connected with the third side wall, the first flange and the first side wall are connected through the second flange, and the second flange is detachably connected with the third flange.

[0017] Further, the second flange comprises a plurality of first extension parts, and the third flange comprises a plurality of second extension parts, the second extension parts are arranged correspondingly with the first extension parts and are fixedly connected through bolts.

[0018] Further, the inner side wall of the suction generator is an integral structure, and the outer side wall of the suction generator is an integral structure.

[0019] An automatic ash discharging device, comprising a connecting unit, an ash discharging fan assembly and the above-mentioned suction generator, the connecting unit is in communication with the first chamber of the suction generator, and the ash discharging fan assembly is connected with the fifth port of the suction generator.

[0020] An air purification device, comprising a dust collecting unit, an air filter and the above-mentioned automatic ash discharging device, the dust collecting unit is connected with the connecting unit, and the air filter is connected with the ash discharging fan assembly.

[0021] 1. The suction generator is characterized in that: the inner side wall and the outer side wall are detachably connected, the inner side wall encloses a first chamber for dust movement, and the inner side wall and the outer side wall enclose a second chamber and an air duct for gas movement, and the gas flowing through the second chamber and the air duct can form a negative pressure below the first chamber, realizing the effect of real-time and rapid discharge of dust in the first chamber to the outside.

[0022] 2. The dust discharge amount is large and can be continuously discharged, effectively increasing the total amount and speed of dust discharge per unit time and improving the dust discharge efficiency.

[0023] 3. The gas used to form the negative pressure has high cleanliness, significantly prolonging the service life of the dust discharge fan assembly.

[0024] 4. The internal airflow of the suction generator moves smoothly, and the negative pressure formed has large pressure, which is beneficial to the rapid discharge of dust.

[0025] 5. Easy to disassemble and maintain, suitable for existing various specifications of air purification devices, and reduces production cost. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a perspective view of the air purification device in the embodiment of the suction generator of the utility model.

[0027] Figure 2 It is a sectional view of the air purification device in the embodiment of the suction generator of the utility model.

[0028] Figure 3 It is an explosion view of the air filter in the embodiment of the suction generator of the utility model.

[0029] Figure 4 It is a sectional view of the air filter in the embodiment of the suction generator of the utility model.

[0030] Figure 5 It is a sectional view of the dust discharge fan assembly in the embodiment of the suction generator of the utility model.

[0031] Figure 6 It is a schematic view of the embodiment of the suction generator of the utility model.

[0032] Figure 7 It is a perspective view of the embodiment of the suction generator of the utility model.

[0033] Figure 8 It is a sectional view of the embodiment of the suction generator of the utility model. DETAILED DESCRIPTION

[0034] The air purification device comprises an air pre-filter and an air cleaner arranged from top to bottom, and the air containing dust and impurities is firstly filtered by the air pre-filter, the dust and impurities enter a dust collecting unit of the air pre-filter, the filtered air enters the air cleaner for second-stage filtering, the dust is blocked by a filter element in the air cleaner, and the clean air enters the engine through the inside of the filter element.

[0035] The suction generator of the utility model can be detachably connected with most air pre-filter devices to realize automatic dust removal of the air pre-filter device. Figure 1 and Figure 2 As shown in the drawings, the air pre-filter comprises a cyclone tube for separating dust and impurities in the air, the cyclone tube is composed of an inner tube and an outer tube, the inner tube comprises an air outlet end and a connecting end, the outer tube comprises a dust outlet end and a connecting end, the connecting end of the inner tube extends into the connecting end of the outer tube, and an annular air inlet is formed at the connecting position; the air inlet is provided with a cyclone vane, the air containing dust and impurities enters the cyclone tube through the air inlet, and the air is subjected to cyclone under the action of the cyclone vane; the dust and impurities move spirally along the outer tube and are discharged through the dust outlet end of the outer tube, and the purified air moves spirally along the inner tube and is discharged through the air outlet end of the inner tube; the air outlet end of the inner tube of the cyclone tube can be connected to the air cleaner or the engine through an air outlet pipe or other connecting members to guide the purified air to the air cleaner or the engine.

[0036] Specifically, the air pre-purification device usually comprises a plurality of cyclone tubes arranged side by side, the air outlet ends of the inner tubes of the plurality of cyclone tubes can first collect the purified air together, and then guide the purified air to the air cleaner or the engine through connecting members such as the air outlet pipe. For example, a converging chamber can be arranged in the air pre-purification device, the air outlet end of each inner tube of the cyclone tube is in communication with the converging chamber, one end of the air outlet pipe is in communication with the converging chamber, and the other end is in communication with the engine. Of course, the dust outlet ends of the outer tubes of the plurality of cyclone tubes can also first collect the separated dust and impurities, for example, a dust collecting assembly can be arranged in the air pre-purification device, the dust outlet end of each outer tube of the cyclone tube is in communication with the dust collecting assembly, so as to collect the separated dust and impurities, and the dust collecting assembly is in communication with the automatic dust removal device to realize automatic dust removal.

[0037] The automatic ash discharging device comprises a connecting unit, an ash discharging fan assembly, an ash discharging control assembly and a suction generator, the connecting unit is installed at an ash discharging port at the bottom of the dust collecting unit, the ash discharging control assembly is connected with the ash discharging fan assembly and is used for controlling the opening and closing of the ash discharging fan assembly, one end of the ash discharging fan assembly is communicated with a downstream of the confluence chamber, relatively clean gas is obtained, the other end of the ash discharging fan assembly is connected with the connecting unit through the suction generator, thereby forming a second path of gas flow in the ash discharging fan assembly and the suction generator, forming a first path of dust flow in the connecting unit and the suction generator, the first path and the second path converge below the suction generator, the gas moves along the second path and is sprayed from the bottom of the suction generator, a negative pressure is formed in the surrounding area, and then the dust in the suction generator is guided to be discharged downward along the first path.

[0038] The dust in the first path is finally discharged to the outside of the automatic ash discharging device along a first direction, the gas in the second path is discharged to the outside of the automatic ash discharging device along a second direction, the second direction is the same direction as the first direction, so that a negative pressure is generated in the area where the dust is located, wherein the same direction includes a same direction which is completely parallel or overlaps, or a same direction which has an offset angle, preferably a same direction which has no offset angle, so that the effect of maximizing the negative pressure in the area where the dust is located is realized.

[0039] In order to better understand the purpose, structure and function of the utility model, the suction generator and the air purification device comprising the suction generator will be further described in detail below with reference to the drawings and taking the specific structure of the suction generator as an example.

[0040] As shown in Figure 1 and Figure 2 , the air purification device comprises an air pre-filter 500 and an air filter 200 arranged from top to bottom, a separation unit 10 for separating dust impurities in air is arranged above the air pre-filter, a dust collecting unit 20 is arranged below the air pre-filter, the dust separation unit 10 is usually a cyclone pipe 11, external air containing dust is separated into air and dust in the cyclone pipe 11, clean air enters a clean air collecting unit 30 upwardly and flows into the air filter 200 downwardly through a clean air passage arranged in the middle of the air pre-filter.

[0041] As shown in Figure 3 and Figure 4As shown, the air filter 200 has a cylindrical structure with its axis oriented left-right, including a sealing housing 210 and a filter element installed inside the sealing housing 210. The sealing housing 210 is sealed on both sides with covers, with the right cover having an air outlet pipe 201. The covers on both sides of the sealing housing 210 are detachably installed; preferably, the covers are connected to the sealing housing 210 using snap-fit ​​fasteners. The upper end of the sealing housing 210 is sealed to the lower end of the clean air passage 7. Air enters the sealing housing 210 after preliminary filtration by the air pre-filter, and then passes through the filter element under negative pressure to obtain clean air. The air after the second filtration enters the engine through the air outlet pipe 201.

[0042] The dust separated by the cyclone tube 11 falls downward into the dust collection unit 20. The dust collection unit 20 has a funnel-shaped structure with a dust discharge port 21 at the bottom. The suction generator and the dust discharge port 21 are detachably connected through the connecting unit 40 and maintain a high degree of sealing. The airflow generated by the dust discharge fan assembly is sent into the suction generator through the control system. The bottom of the suction generator generates negative pressure, which guides the dust in the dust collection unit 20 to be sucked downward and discharged.

[0043] like Figures 1 to 4 As shown, the air filter 200 is connected to the air pre-filter 500 through the clean air channel 7. The air filter 200 is a cylindrical structure with the left-right direction as the axis. It includes an outer cylindrical sealing shell 210, a first cover 211, a second cover 212, and an inner first filter element 410, a second filter element 420, and a third filter element 400. The top of the sealing shell 210 has an opening that is sealed to the lower end of the clean air channel. In this embodiment, a clamp structure is used for sealing and fixing. The first cover 211 and the second cover 212 are positioned opposite each other on the left and right sides of the sealing shell 210 to seal the interior of the entire air filter 200 and prevent unpurified air from entering the air filter. The first filter element 410 contains the second filter element 420 and the third filter element 400. The third filter element 400 and the second filter element 420 are positioned opposite each other on both sides of the air filter 200. The second filter element 420 is positioned on the side closer to the second cover 212. Air enters the sealed housing 210 after passing through the first stage of filtration in the air pre-filter, and then undergoes a second stage of filtration through the first filter element 410 under negative pressure, before entering the engine through the exhaust pipe 201.

[0044] Specifically, the second cover 212 is provided with a circular hole opposite to the air inlet pipe of the engine, and the second cover 212 is connected to the sealing shell 210 in a sealed manner by means of a plurality of bolts arranged on the outer edge of the second cover 212. The first cover 211 includes an upper cover 202 and a lower cover 203. The outer edge of the lower cover 203 is detachably connected to the outer edge of the cylinder of the air cleaner. In the present embodiment, a clamping groove and a clamping hoop combination is used for fixation. Meanwhile, an annular flange 214 is formed outwardly from the middle of the lower cover 203. The flange 214 is detachably connected to the circular upper cover 202 and forms a fifth chamber 213. In the present embodiment, a clamping and bolt combination is used for fixation. The fifth chamber 213 contains the shell of the dust removal fan assembly. Holes are formed in the side walls of the upper cover 202 and the lower cover 203 for the exhaust pipe 103 of the dust removal fan assembly to pass through the fifth chamber 213. The exhaust pipe 103 is in communication with the suction generator 300 arranged below the dust collection unit 20. In addition, a circular fourth opening is formed in the middle of the lower cover 203. The suction pipe 102 of the dust removal fan assembly 100 passes through the fourth opening, so that the fourth chamber 206 in the third filter element 400 is in communication with the inside of the dust removal fan assembly 100.

[0045] As shown in Figure 4 The inside of the air cleaner 200 is provided with a first filter element 410, a second filter element 420 and a third filter element 400. The second filter element 420 and the third filter element 400 are accommodated in the first filter element 410. The first filter element 410 is a hollow cylindrical structure as a whole, which includes an annular second end cover (not shown in the figure), a first end cover 215 and a first core body formed by a pleated filter paper. The second end cover is in clamping structure and is in interference fit with the inner side of the second cover 212, so that the first filter element 410 is detachably connected to the second cover. The inner side of the first end cover 215 is provided with an annular first clamping groove 216 and a second clamping groove 217. The first clamping groove is used for accommodating one end of the first core body. The diameter of the second clamping groove is smaller than that of the first clamping groove, and is used for accommodating one end of the third filter element.

[0046] The third filter element is a hollow cylindrical structure as a whole, which includes a circular third end cover 218 and a third core body. The third end cover 218 is arranged on the side close to the second filter element 420, and cooperates with the second clamping groove 217 on the inner side of the first end cover 215 to form a clamping force on the third core body, so that the third filter element is detachably connected to the first filter element. Meanwhile, the third end cover 218, the third core body and the first end cover 215 enclose to form a fourth chamber 206. The inner side of the first end cover 215 is provided with a circular fifth opening. The suction pipe 102 of the dust removal fan assembly 100 passes through the fifth opening, so that the fourth chamber 206 in the third filter element 400 is in communication with the inside of the dust removal fan assembly 100.

[0047] The second filter element 420 is a hollow cylindrical structure, located inside the first filter element near the engine exhaust pipe. The second filter element 420 includes an annular fourth end cap (not shown), a circular fifth end cap 219, and a second core. The fourth and fifth end caps 219 are positioned opposite each other on either side of the second core. The fourth end cap uses a snap-fit ​​structure to form an interference fit with the inner side of the second cover body 212, allowing the second filter element 420 to be detachably connected to the second cover body. The fifth end cap 219 is positioned opposite the third end cap 218 of the third filter element. The fourth end cap, the circular fifth end cap 219, and the second core body together form a third chamber. Understandably, due to the negative pressure generated by the engine's suction, the air filtered by the first filter element enters the engine through the third chamber 205.

[0048] It should be noted that the main purpose of the second filter element in the air filter is to prevent dust on the outside of the first filter element from entering the engine's intake manifold when the first filter element is removed from the air filter due to vibration during the removal process. The second filter element is located between the first filter element and the engine's intake manifold to prevent dust on the first filter element from entering the engine's intake manifold. In addition, the second filter element can provide a certain degree of filtration protection in case the first filter element is accidentally damaged or not installed correctly.

[0049] like Figures 1 to 3 As shown, in this embodiment, the dust collection unit 20 of the air pre-filter 500 has a dust discharge port at its bottom. The suction generator 300 is connected to the dust discharge port via a connecting unit 40. This connecting unit 40 is an annular adapter with different diameters at its upper and lower ends. It is screwed onto the dust discharge port and the suction generator respectively via threads to ensure a sealed connection. The fifth port 308 of the suction generator is connected to the discharge pipe 103 of the dust discharge fan assembly 100 via a connecting pipe 600, so that the dust discharge fan assembly can draw gas filtered by the first filter element from the fourth chamber. The gas enters the second chamber of the suction generator along the connecting pipe 600 and is then discharged to the outside.

[0050] It should be noted that the purpose of the third filter element is to prevent unfiltered external air from entering the ash removal fan assembly 100 through the third opening 307 of the suction generator when the engine is running and the ash removal fan assembly 100 stops working, and then directly enters the first filter element of the air filter 200. Therefore, it performs filtration before entering the first filter element of the air filter 200, preventing the engine's suction power from exceeding that of the ash removal fan assembly, which would cause unfiltered external air to be drawn back into the engine. Furthermore, the air entering the ash removal fan assembly 100 can also be filtered again by the third filter element 400, protecting the internal structure of the ash removal fan assembly, thereby increasing the airflow and improving the efficiency of automatic ash removal.

[0051] Further, the fifth opening outer edge of the first end cover 215 is provided with an annular first sealing strip 207, which is located between the first end cover 215 and the lower cover 203. After the outer edge of the lower cover 203 is fixed to the sealing shell 210 of the air filter through the plurality of clamps, the first sealing strip 207 located between the first end cover 215 and the lower cover 203 can be extruded, thereby improving the sealing performance of the fourth chamber 206. When the dust removal fan assembly is started, a negative pressure is generated in the fourth chamber 206, and then the gas filtered by the first filter element is drawn into the dust removal fan assembly.

[0052] Meanwhile, the outer edge of the fourth opening of the lower cover 203 is provided with a second sealing strip 208, which is located between the lower cover 203 and the dust removal fan assembly shell. When the upper cover 202 and the lower cover 203 are fixed by bolts, the second sealing strip 208 located between the lower cover 203 and the dust removal fan assembly shell is extruded, thereby improving the sealing performance of the fourth chamber 206. In addition, after the second sealing strip 208 and the first sealing strip 207 seal the connection between the shell, the lower cover 203 and the first end cover 215, a negative pressure is generated in the fourth chamber 206 when the dust removal fan assembly is working, which can suck the impurities in the fourth chamber 206, thereby achieving the effect of real-time cleaning and maintenance.

[0053] The dust collection unit 20 is a funnel structure, and a dust discharge port 21 is formed at the bottom. The automatic dust removal device includes a connecting unit 40, a dust removal fan assembly 100, a dust removal control assembly (not shown in the figure), and a suction generator 300. The connecting unit 40 includes two annular side walls connected in an up-down direction, and the two side walls have different diameters. The upper side wall is threadedly engaged with the dust discharge port 21 at the bottom of the dust collection unit 20, and the lower side wall is threadedly engaged with the first flange 309 at the top of the suction generator. The connecting unit 40 serves as an adapter for connecting the dust discharge port 21 and the first flange 309 with different diameters.

[0054] As shown in Figures 1 to 5 , one end of the dust removal fan assembly 100 is in communication with the fifth port 308 of the suction generator 300. The dust removal fan assembly 100 includes a shell 101, a suction pipe 102, a discharge pipe 103, and an input port 104. The dust removal control assembly is connected to the input port 104. The shell 101 is provided with a driving motor 105 and a fan blade. The fan blade (not shown in the figure) is arranged above the driving motor 105. The suction pipe 102 includes a first port 108 and a second port 107. The first port 108 is in communication with the top of the shell 101. The second port 107 is connected to the fourth chamber. The discharge pipe 103 includes a third port 109 and a fourth port 110. The third port 109 is connected to the right side of the shell 101 and is arranged opposite to the fan blade. The fourth port 110 is connected to the fifth port 308 of the suction generator 300 through a connecting pipe 600.

[0055] It can be understood that the second port 107 of the dust discharging fan assembly 100 can also be directly communicated with the external environment, as long as the effect of the dust discharging fan assembly inhaling air through the suction pipe 102 can be achieved. Further, the blades of the fan blade can be made of high-hardness materials such as aluminum alloy and other metals to withstand long-term impact and wear of dust and particles, thereby enhancing the service life of the blades and avoiding frequent replacement of the dust discharging fan assembly.

[0056] As shown in Figures 6 to 8 The suction generator 300 is in the form of an inverted cone structure as a whole, including a funnel-shaped outer wall 303 and an inner wall 304 corresponding to the outer wall 303, the inner wall 304 forms a funnel-shaped first chamber 301, the first chamber 301 is provided with a first opening 305 at the top and a second opening 306 at the bottom, the first opening 305 is communicated with the second communication port 46, so that the first chamber 301 serves as the first path for the downward movement of dust, at the same time, the outer wall 303 and the inner wall 304 form a ring-shaped second chamber 302 with a funnel-shaped cross section, the second chamber 302 is provided with a ring-shaped third opening 307 at the bottom, the outer wall 303 is provided with a fifth port 308, the fifth port 308 is communicated with the fourth port 110 of the discharge pipe 103, the second port 107 of the suction pipe 102 of the dust discharging fan assembly 100 is communicated with the clean air channel through a connecting pipe, so that the second chamber 302 serves as the second path for the downward flow of gas.

[0057] Further, the bottom of the outer wall 303 of the suction generator 300 protrudes from the bottom of the inner wall 304, that is, the position of the second opening 306 of the first chamber 301 is higher than the position of the third opening 307 of the second chamber 302, the position refers to the height position relative to the horizontal plane, thereby forming a cylindrical first area below the second opening 306 enclosed by the outer wall 303, the third opening 307 discharges gas below the first area, so that a greater negative pressure is formed in the first area, thereby increasing the suction force of the dust in the first chamber 301, achieving the effect of increasing the dust discharging efficiency.

[0058] Specifically, as shown in Figures 6 to 8As shown, the suction generator 300 is a whole inverted conical structure, including a funnel-shaped outer side wall 303, and a corresponding inner side wall 304 which is sleeved inside the outer side wall 303, the inner side wall of the suction generator includes an annular first flange 309 arranged upward, the first flange 309 is threadedly engaged with a dust outlet 21 at the bottom of the dust collecting unit 20 through a ring-shaped connecting unit which is an adapter, the inner side wall further includes a second flange, a first side wall 311 and a second side wall 312, the second flange is vertically arranged below the first flange 309, the second flange forms a plurality of first extension portions outwardly, for detachable connection with the flange of the outer side wall below through screws, the inner side of the second flange is connected with the inclined first side wall 311, the bottom of the first side wall 311 is connected with the inclined second side wall 312, and the included angle between the second side wall 312 and the longitudinal axis is smaller than that between the first side wall 311 and the longitudinal axis, so that the dust is quickly collected when passing through the upper part of the first chamber, and quickly falls and is discharged by the weight of the dust impurities when passing through the lower part of the first chamber, keeping the second opening 306 of the first chamber unblocked and avoiding blockage.

[0059] The outer side wall of the suction generator includes a third flange 313, a third side wall 314, a fourth side wall 315 and a fifth side wall 316 connected in sequence, the third flange 313 is transversely arranged and forms three second extension portions outwardly, the second extension portions correspond to the first extension portions and are fixed by bolts to connect the inner side wall with the outer side wall and seal the top of the second chamber, the third side wall 314 is vertically arranged downward and connected with the inclined fourth side wall 315, whereby the third side wall 314, the fourth side wall 315, the first side wall 311 and the second side wall 312 form an annular inverted conical second chamber, the fourth side wall 315 gradually approaches the outside of the second side wall 312, so that the cross-sectional area of the second chamber gradually decreases from top to bottom, thereby compressing the volume of the second chamber to make the gas pressurized and quickly discharged downward, the fourth side wall 315 is connected with the inclined fifth side wall 316, the fifth side wall 316 extends downward while maintaining the distance between the bottom of the fourth side wall 315 and the second side wall 312, thereby forming a third opening 307 between the fifth side wall 316 and the second side wall 312 for the gas in the second chamber to be discharged outward, and forming an annular inverted conical air duct between the fifth side wall 316 and the second side wall 312 for guiding the gas to converge downward, and since the cross-sectional area of the air duct is smaller than that of the second chamber, the gas passing through the air duct is pressurized and discharged, thereby increasing the flow rate of the gas discharged outward along the second path.

[0060] As Figure 8As shown, the bottom of the fifth side wall 316 extends downward beyond the bottom of the second side wall 312, thereby forming a sixth chamber 317 below the second opening, which is enclosed by the fifth side wall 316. The gas discharged through the air duct converges along the fifth side wall 316, thereby rapidly forming a negative pressure area in the sixth chamber 317, which in turn forms a negative pressure on the first chamber above, guiding the dust inside to be rapidly discharged from the second opening 306, thereby increasing the dust discharge efficiency.

[0061] It can be understood that the air duct in the embodiment is a tapered channel with a downwardly inclined cross section, so that the discharged gas converges rapidly in the middle direction, thereby forming a greater gas flow rate to increase the negative pressure intensity.

[0062] It should be particularly emphasized that the air duct in the embodiment is a ring structure with a certain height, which is arranged outside the first chamber. Further, the ring structure of the air duct can also be a ring plane structure enclosed by the inner side wall and the outer side wall, as long as the gas entering the air duct from the second chamber can be accelerated to be discharged outward, thereby forming a negative pressure area below the suction generator.

[0063] It can be understood that the gas entering the fifth port 308 of the suction generator can also come from an external air pump, as long as it can continuously fill the gas into the second chamber, thereby continuously forming a negative pressure area at the bottom of the suction generator.

[0064] Further, the inner side wall and the outer side wall of the suction generator are integrally formed structures to improve the overall sealing and structural strength of the suction generator. At the same time, the inner side wall and the outer side wall are detachable structures to facilitate the maintenance and cleaning of the suction generator.

[0065] The working principle of the embodiment is that the relatively clean air separated by the air pre-filter will enter the air filter 200 through the clean air channel, while the gas in the air filter is sucked into the second chamber 302 of the suction generator 300 by the dust discharge fan assembly 100 and discharged downward through the third opening 307 at the bottom of the second chamber 302. After the dust separated by the air pre-filter enters the first chamber 301 of the suction generator 300 through the connecting unit, it continues to move downward along the funnel-shaped inner side wall 304 of the suction generator 300, and the first direction of the dust outward discharge and the second direction of the gas outward discharge remain in the same direction. The first path for the dust movement and the second path for the gas movement converge at the bottom of the suction generator 300. By the negative pressure formed at the second opening 306 when the gas is discharged downward, a downward suction force is formed on the dust in the first chamber 301, so that the dust in the suction generator 300 is rapidly discharged outward, thereby realizing the effect of automatic dust discharge.

[0066] The control mode of the air purification device is that, during operation, the dust removal fan assembly 100 is started first and then the engine is started, air is discharged to the outside through the discharge pipe 103 of the fan, a negative pressure environment is formed in the connecting unit 40 and the dust collection unit 20, and the external air containing dust or the residual dust in the dust collection unit 20 is prevented from being sucked into the air filter 200 through the third opening 307 of the suction generator when the engine is started, so that the filtering efficiency is improved. During the end, the engine is turned off first and then the dust removal fan assembly 100 is turned off, so that the external air containing dust or the residual dust in the dust collection unit 20 is prevented from being sucked into the air filter 200, and correspondingly, the dust removal control assembly can be provided with a time delay function to automatically realize the control mode of turning off the engine first and then turning off the dust removal fan assembly 100, and the degree of automatic control is improved.

[0067] The above "above", "below", "within", including the number; the "more than" "not including", not including the number.

[0068] The above is further described by means of specific embodiments, but it should be understood that the specific description here should not be understood as limiting the essence and scope of the utility model, and various modifications made by those skilled in the art after reading the above description are within the scope of the utility model. In the above specific embodiments, various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, various possible combinations of the embodiments of the utility model are not described again.

[0069] If the utility model embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), if the specific posture changes, the directional indications also change accordingly.

Claims

1. A suction generator, characterized by, The inner side wall and the outer side wall are detachably connected, the inner side wall encloses a first chamber for dust movement, the inner side wall and the outer side wall enclose a second chamber for gas movement and an air duct, the air duct is arranged at one end of the first chamber for discharging dust, the fifth port is arranged on the outer side wall, and the gas flows through the fifth port, the second chamber and the air duct in sequence, so that the dust in the first chamber is discharged to the outside.

2. The suction generator of claim 1, wherein The air duct is in a ring shape.

3. The suction generator of claim 2, wherein The air duct is arranged around the first chamber, and one end of the air duct is provided with an air inlet port, which is in communication with the second chamber.

4. The suction generator of claim 1, wherein A sixth chamber is further arranged below the first chamber, one end of the sixth chamber is in communication with the air duct, and the other end is in communication with the outside of the suction generator, so that the gas is sequentially discharged to the outside of the suction generator through the air duct and the sixth chamber.

5. The suction generator according to any one of claims 1 to 4, wherein The air duct is arranged obliquely, so that the gas discharged from the air duct can converge to the middle.

6. The suction generator of claim 1, wherein The inner side wall comprises a first side wall and a second side wall arranged in connection, the inclination angle of the first side wall is greater than that of the second side wall, so that the dust in the first chamber can quickly fall and be discharged after being collected.

7. The suction generator of claim 6, wherein The outer side wall comprises a third side wall, a fourth side wall and a fifth side wall arranged in connection, the third side wall and the fourth side wall enclose the second chamber with the first side wall and the second side wall, and the fourth side wall gradually approaches the second side wall from top to bottom, so that the cross-sectional area of the second chamber gradually decreases from top to bottom.

8. The suction generator of claim 7, wherein, The second side wall of the inner side wall and the fifth side wall of the outer side wall enclose the air duct.

9. The suction generator of claim 7, wherein, The bottom of the fifth side wall protrudes from the bottom of the second side wall to form the sixth chamber, which can guide the gas discharged through the air duct to converge below the first chamber.

10. A suction generator as claimed in any one of claims 7 to 9, wherein, The inner side wall further comprises a first flange and a second flange, and the outer side wall further comprises a third flange connected with the third side wall, the first flange and the first side wall are connected through the second flange, and the second flange is detachably connected with the third flange.

11. The suction generator of claim 10, wherein, The second flange comprises a plurality of first extension parts, the third flange comprises a plurality of second extension parts, and the second extension parts are arranged correspondingly with the first extension parts and are fixedly connected through bolts.

12. The suction generator of claim 7, wherein, The inner side wall of the suction generator is in an integral molding structure, and the outer side wall of the suction generator is in an integral molding structure.

13. An automatic ash discharge device characterized by comprising: The connecting unit is in communication with the first chamber of the suction generator, and the dust discharging fan assembly is connected with the fifth port of the suction generator.

14. An air purification device, characterized by The dust collecting unit is connected with the connecting unit, and the air filter is connected with the dust discharging fan assembly.

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