A high-sealing, noise-reducing explosion-proof vortex fan

Abstract

The present invention provides a high-sealing and noise-reducing explosion-proof vortex fan, which belongs to the technical field of vortex fans. The high-sealing and noise-reducing explosion-proof vortex fan mainly includes a pump cover, a pump bottom, a long shaft sleeve, an explosion-proof motor and an anti-vibration base. The connection between the pump cover and the pump bottom is respectively formed with a flange convex ring and a flange concave ring. The convex ring sealing ring installed on the flange convex ring corresponds to the concave ring sealing groove opened on the flange concave ring; a shaft sleeve clamp ring is formed at the inner ring edge of the shaft sleeve flange at both ends of the long shaft sleeve, and a shaft sleeve sealing ring is sleeved thereon. The first shaft sleeve clamping groove opened on the extended shaft sleeve of the pump bottom and the second shaft sleeve clamping groove opened on the working end surface of the explosion-proof motor correspond to the shaft sleeve clamping rings at both ends of the long shaft sleeve; the front end of the anti-vibration base is fixedly connected to the pump cover, and the rear end is fixedly connected to the motor support column formed at the bottom of the explosion-proof motor; a primary pump disc and a secondary pump disc are installed between the pump cover and the pump bottom. The present invention has the advantages of high sealing, shock absorption and noise reduction, high exhaust pressure and high efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of vortex blowers, and in particular relates to a high-sealing and noise-reducing explosion-proof vortex blower. Background Art

[0002] The vortex fan is a gas source power device with both blowing and suction functions. It is widely used in various industries. When it is used in flammable and explosive environments such as petrochemicals, coal mines, pharmaceuticals, and textiles, special explosion-proof vortex fans are required. However, due to its operating principle, explosion-proof vortex fans have disadvantages such as high noise, low exhaust pressure, and the need for regular maintenance. In addition, since it is in a flammable and explosive environment during operation, there may be a large amount of flammable gas and high-density dust, so the demand for the sealing of explosion-proof vortex fans is relatively high.

[0003] According to the patent number CN202121292670.7, a new explosion-proof variable frequency vortex blower is provided, including a motor, a pump head and a base. The motor is fixed to the base through a bracket, so that the motor is not easy to shake during operation. The pump head is fixed to the base through a baffle. The motor and the pump head are driven by a coupling. The motor and the pump head are further connected by a flange, which protects the coupling and makes the overall structure more solid. This patent can reduce vibration to a certain extent, thereby achieving a noise reduction effect, but it does not solve other problems of explosion-proof vortex blowers. Summary of the invention

[0004] The purpose of the present invention is to provide a high-sealing and noise-reducing explosion-proof vortex blower in view of the above-mentioned problems existing in the prior art.

[0005] The object of the present invention can be achieved by the following technical solutions: A high-sealing and noise-reducing explosion-proof vortex fan mainly includes a pump cover, a pump bottom, a long shaft sleeve, an explosion-proof motor and a seismic base;

[0006] The connection between the pump cover and the pump bottom is formed with a flange convex ring and a flange concave ring on the connection edges of the two, and a plurality of corresponding connection protrusions are formed on the flange convex ring and the flange concave ring at equal intervals in the circumferential direction, and the fastening bolts pass through the two corresponding connection protrusions from front to back to fasten the pump cover and the pump bottom; a convex ring sealing ring is installed on the outer side wall of the annular protrusion of the flange convex ring, and a concave ring sealing groove is opened on the inner side wall of the annular groove of the flange concave ring, and the convex ring sealing ring is matched with the concave ring sealing groove;

[0007] A pair of mounting feet are formed at the bottom of the pump cover, and the anti-vibration base is fixedly connected to the bottom of the fan through the mounting feet. A long strip-shaped motor mounting groove is provided on the anti-vibration base; a first air duct and a second air duct are formed at the bottom of the pump bottom as air inlet and outlet ducts;

[0008] The long shaft sleeve is an annular structure, with shaft sleeve flanges formed at both ends, the inner ring edge of the shaft sleeve flange protrudes outward to form a shaft sleeve clamp ring, and the shaft sleeve clamp ring is sleeved with a shaft sleeve sealing ring; the pump bottom is connected to the explosion-proof motor through the long shaft sleeve, and the pump bottom is formed with an extended shaft sleeve on the side facing the long shaft sleeve, and the extended shaft sleeve is provided with a first shaft sleeve clamping groove at the inner edge, and the explosion-proof motor is provided with a second shaft sleeve clamping groove on the working end face facing the long shaft sleeve, and the first shaft sleeve clamping groove and the second shaft sleeve clamping groove respectively correspond to the shaft sleeve clamping rings at both ends of the long shaft sleeve;

[0009] A vertical motor support column is formed downward at the bottom of the explosion-proof motor, and the bottom of the motor support column is abutted against the top of the earthquake-resistant base. A fixing bolt passes through the motor mounting slot from bottom to top and is fixedly connected to the bottom end of the motor support column to fix the earthquake-resistant base to the explosion-proof motor.

[0010] In the above-mentioned high-sealing, noise-reducing explosion-proof vortex blower, a base bolt groove is provided on the mounting foot, and a base mounting bolt matching the base bolt groove is installed at a position corresponding to the mounting foot on the seismic-resistant base, and base mounting holes are provided on both sides of the seismic-resistant base.

[0011] In the above-mentioned high-sealing, noise-reducing explosion-proof vortex blower, a number of reinforcing ribs connecting the two end sleeve flanges of the long shaft sleeve are formed circumferentially and equidistantly on the outer wall, and a number of heat conducting plates are evenly arranged on the outer wall of the long shaft sleeve between adjacent reinforcing ribs.

[0012] In the above-mentioned high-sealing, noise-reducing explosion-proof vortex blower, a primary pump disc and a secondary pump disc are installed between the pump cover and the pump bottom, the primary pump disc is provided with a primary air port at the bottom, and the secondary pump disc is provided with a secondary air port at the bottom, the primary air port and the secondary air port both correspond to the positions of the air ducts on the pump bottom, the pump cover and the primary pump disc are combined to form a primary impeller cavity, the secondary pump disc and the pump bottom are combined to form a secondary impeller cavity, and the primary impeller cavity and the secondary impeller cavity are connected and transmitted through the primary air port and the secondary air port.

[0013] In the above-mentioned high-sealing, noise-reducing explosion-proof vortex blower, a plum blossom-shaped sleeve is formed in the center on the opposite surfaces of the first-stage pump disc and the second-stage pump disc, and circumferentially distributed structural sheets are formed radiating outward from the plum blossom-shaped protrusions of the plum blossom-shaped sleeve, and corresponding pump disc bolt holes are formed on each structural sheet.

[0014] In the above-mentioned high-sealing and noise-reducing explosion-proof vortex blower, a third air duct is formed on the side of the first-level pump disc, and the original second air duct is closed and sealed by a sealing cover. The first-level pump disc is provided with circumferentially evenly distributed first-level heat sinks on the outer wall, and the second-level pump disc is also provided with circumferentially evenly distributed second-level heat sinks on the outer wall.

[0015] In the above-mentioned high-sealing, noise-reducing explosion-proof vortex blower, the first-level pump disc and the second-level pump disc are respectively formed with a first-level connecting bolt hole and a second-level connecting bolt hole at positions corresponding to the connecting protrusions. During installation and connection, long fastening bolts are passed through the flange convex ring connecting protrusion, the first-level connecting bolt hole, the second-level connecting bolt hole and the flange concave ring connecting protrusion from front to back in sequence to fix the pump cover, the first-level pump disc, the second-level pump disc and the pump bottom to each other.

[0016] In the above-mentioned high-sealing and noise-reducing explosion-proof vortex blower, a positioning groove is formed at one end of the first-level connecting bolt hole facing the second-level pump disc, and a positioning protrusion is formed at one end of the second-level connecting bolt hole facing the first-level pump disc, and the positioning protrusion and the positioning groove correspond to each other.

[0017] Compared with the prior art, the high-sealing and noise-reducing explosion-proof vortex fan provided by the present invention has the following advantages:

[0018] 1. By setting sealing structures between the pump cover and the pump bottom, between the pump bottom and the long shaft sleeve, and between the long shaft sleeve and the explosion-proof motor, the overall high sealing performance of the fan is effectively enhanced, making it difficult for gas or dust to invade the interior in a flammable and explosive environment;

[0019] Second, by setting up an anti-vibration base and setting up a motor support column at the bottom of the explosion-proof motor to connect with the anti-vibration base, the vibration of the pump head and the motor during operation can be effectively transmitted and buffered, thereby achieving noise reduction; by setting up a long shaft sleeve to increase the shaft length space, the fan uses a long shaft fan, which can reduce vibration and noise while reducing energy consumption;

[0020] 3. By adding a primary pump disc and a secondary pump disc between the pump bottom and the pump cover, the single impeller cavity is converted into a double impeller cavity to obtain a larger exhaust volume and exhaust pressure, thereby improving the overall operating efficiency of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention;

[0022] Figure 2 It is an exploded view of the front and side structures and a partial enlarged view of the first embodiment of the present invention;

[0023] Figure 3 It is an exploded view and a partial enlarged view of the rear side structure of the first embodiment of the present invention;

[0024] Figure 4 is a structural diagram of Embodiment 2 of the present invention;

[0025] Figure 5 It is an exploded view of the front and side structures and a partial enlarged view of the second embodiment of the present invention;

[0026] Figure 6It is an exploded view and a partial enlarged view of the rear side structure of the second embodiment of the present invention.

[0027] In the above figure, 100, pump cover; 110, flange convex ring; 111, connecting convex block; 112, convex ring sealing ring; 120, mounting foot; 121, foot bolt groove; 130, fastening bolt; 140, primary pump disc; 141, primary heat sink; 142, primary air port; 143, positioning groove; 144, primary connecting bolt hole; 145, third air duct; 150, secondary pump disc; 151, secondary heat sink; 152, secondary air port; 153, positioning convex block; 154, secondary connecting bolt hole; 160, plum blossom-shaped shaft sleeve; 161, structural sheet; 162, pump disc bolt hole;

[0028] 200, pump bottom; 210, flange concave ring; 211, concave ring sealing groove; 220, extended sleeve; 221, first sleeve slot; 231, first air duct; 232, second air duct; 233, sealing cover; 300, long sleeve; 310, sleeve flange; 311, sleeve clamp ring; 312, sleeve sealing ring; 320, reinforcing rib; 330, heat conductive sheet; 400, explosion-proof motor; 410, second sleeve slot; 420, motor support column; 421, fixing bolt; 500, earthquake-resistant base; 510, base mounting bolt; 520, motor mounting slot; 530, base mounting hole. DETAILED DESCRIPTION

[0029] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0030] Embodiment 1: Figures 1 to 3 As shown, the high-sealing and noise-reducing explosion-proof vortex fan mainly includes a pump cover 100, a pump bottom 200, a long shaft sleeve 300, an explosion-proof motor 400 and a shock-resistant base 500. The pump cover 100 and the pump bottom 200 are fixedly connected by fastening bolts 130. A long shaft sleeve 300 is arranged between the pump bottom 200 and the explosion-proof motor 400 to increase the shaft length space, which is convenient for using a long-axis fan with low energy consumption, shock absorption and noise reduction. The shock-resistant base 500 is installed at the bottom of the fan.

[0031] like Figures 2 to 3As shown, a flange convex ring 110 is formed on the edge of the connection of the pump cover 100 toward the pump bottom 200, and an annular protrusion is formed on the side of the flange convex ring 110 toward the pump bottom 200, and a convex ring sealing ring 112 is installed on the outer wall of the annular protrusion; a flange concave ring 210 corresponding to the flange convex ring 110 is formed on the edge of the connection of the pump bottom 200 toward the pump cover 100, and an annular groove corresponding to the annular protrusion is formed on the side of the flange concave ring 210 toward the pump cover 100, and a concave ring sealing groove 211 is formed on the inner wall of the annular groove; the convex ring sealing ring 112 and the concave ring sealing groove 211 are installed in correspondence with each other to seal the connection between the pump cover 100 and the pump bottom 200, so as to prevent external gas or dust from invading the impeller cavity of the pump head when the fan is in a flammable and explosive environment and affecting the normal operation of the fan, thereby ensuring safety.

[0032] A plurality of corresponding connecting protrusions 111 are formed on the flange convex ring 110 and the flange concave ring 210 at circumferentially equal intervals, and a corresponding bolt hole is opened in the center of the connecting protrusion 111. When installing the fan pump head, the fastening bolts 130 pass through the connecting protrusion 111 of the flange convex ring 110 and the connecting protrusion 111 of the flange concave ring 210 from front to back respectively, thereby fastening the pump cover 100 and the pump bottom 200 together.

[0033] A pair of mounting feet 120 are formed at the bottom of the pump cover 100, and a foot bolt groove 121 is provided on the mounting feet 120. The anti-seismic base 500 is installed with a base mounting bolt 510 at a position corresponding to the mounting feet 120. The anti-seismic base 500 is fixedly connected to the bottom of the fan by the base mounting bolt 510 and the foot bolt groove 121. The anti-seismic base 500 is provided with base mounting holes 530 on both sides. A first air duct 231 and a second air duct 232 are formed at the bottom of the pump bottom 200 as air inlet and outlet ducts. The anti-seismic base 500 is a symmetrical and tortuous plate-like structure as a whole, and a peak-shaped protrusion is formed at the position where it is fixedly connected to the mounting feet 120, which is conducive to buffering and transmitting the vibration generated by the pump head, and a bridge-shaped protrusion is formed in the middle, which is convenient for supporting the pump head and positioning and installing the first air duct 231 and the second air duct 232.

[0034] The pump bottom 200 and the explosion-proof motor 400 are connected through a long shaft sleeve 300. The pump bottom 200 is formed with an extended shaft sleeve 220 on the side facing the long shaft sleeve 300. The extended shaft sleeve 220 is provided with a first shaft sleeve groove 221 at the inner edge. The explosion-proof motor 400 is provided with a second shaft sleeve groove 410 on the working end face facing the long shaft sleeve 300.

[0035] The long shaft sleeve 300 is annular in structure as a whole, with shaft sleeve flanges 310 formed at both ends of the ring. The inner ring edge of the shaft sleeve flange 310 protrudes outward to form a shaft sleeve clamp ring 311, and a shaft sleeve sealing ring 312 is sleeved on the shaft sleeve clamp ring 311. The first shaft sleeve groove 221 and the second shaft sleeve groove 410 respectively correspond to the shaft sleeve clamp rings 311 at both ends of the long shaft sleeve 300. The connecting end faces at both ends are sealed by the shaft sleeve sealing ring 312 to prevent external gas or dust from invading the pump head and the inside of the motor when the fan is in a flammable and explosive environment, thereby affecting the normal operation of the fan.

[0036] Compared with the conventional vortex blower whose shaft sleeve needs to have heat dissipation holes on the annular wall, the long shaft sleeve 300 of the explosion-proof vortex blower has no holes on the annular wall, and a number of reinforcing ribs 320 connecting the shaft sleeve flanges 310 at both ends are formed at equal distances on the outer wall in the annular direction between the shaft sleeve flanges 310 at both ends of the long shaft sleeve 300, which are used to strengthen the structural strength of the long shaft sleeve 300, and a number of heat conductive plates 330 are evenly arranged on the outer wall of the long shaft sleeve 300 between adjacent reinforcing ribs 320, so as to enhance the heat dissipation effect by increasing the contact area between the outer surface of the long shaft sleeve 300 and the outside air.

[0037] A vertical motor support column 420 is formed downward at the bottom of the explosion-proof motor 400, and the bottom of the motor support column 420 is against the top of the anti-vibration base 500. The anti-vibration base 500 is provided with a long strip of motor mounting slot 520, and a fixing bolt 421 passes through the motor mounting slot 520 from bottom to top and is fixed to the bottom end of the motor support column 420, so as to fix the anti-vibration base 500 with the explosion-proof motor 400. The vibration of the explosion-proof motor 400 is transmitted to the anti-vibration base 500 through the motor support column 420, and then further shock-absorbing and buffering is performed through the anti-vibration base 500, thereby realizing the overall shock absorption and noise reduction of the explosion-proof vortex fan.

[0038] Embodiment 2: Figures 4 to 6 As shown, in order to further increase the exhaust volume and exhaust pressure of the explosion-proof vortex blower, the present invention converts the single-impeller pump head into a double-impeller pump head by installing a primary pump disc 140 and a secondary pump disc 150 between the pump cover 100 and the pump bottom 200, so that the air is gradually compressed through the two sets of impellers in the pump head to increase the wind pressure.

[0039] like Figures 5 and 6As shown, the primary pump disc 140 is combined with the pump cover 100 to form a primary impeller chamber, the primary pump disc 140 is provided with a primary air port 142 at the bottom, and a third air duct 145 is formed on the side; the secondary pump disc 150 is combined with the pump bottom 200 to form a secondary impeller chamber, the secondary pump disc 150 is provided with a secondary air port 152 at the bottom, and the original second air duct 232 is closed and sealed by the sealing cover 233. The primary air port 142 and the secondary air port 152 correspond to the positions of the first air duct 231 and the original second air duct 232 on the pump bottom 200, the primary impeller chamber and the secondary impeller chamber are connected and transmitted through the primary air port 142 and the secondary air port 152, the air enters the primary impeller chamber in the pump body from the third air duct 145, enters the secondary impeller chamber from the primary air port 142 and the secondary air port 152 after being compressed by the primary impeller, and is discharged from the first air duct 231 after being further compressed by the secondary impeller.

[0040] A plum blossom-shaped sleeve 160 is formed in the center on the opposite surfaces of the primary pump disc 140 and the secondary pump disc 150, and circumferentially distributed structural sheets 161 are formed radiating outward from the plum blossom-shaped protrusions of the plum blossom-shaped sleeve 160. The structural sheets 161 are used to increase the structural strength. Corresponding pump disc bolt holes 162 are formed on each structural sheet 161. The primary pump disc 140 and the secondary pump disc 150 are fixedly connected by bolts to cooperate with the pump disc bolt holes 162 of the two.

[0041] The primary pump disc 140 and the secondary pump disc 150 are respectively formed with a primary connection bolt hole 144 and a secondary connection bolt hole 154 at positions corresponding to the connection protrusion 111. When installing and connecting, the long fastening bolt 130 passes through the flange protrusion ring 110 connection protrusion 111, the primary connection bolt hole 144, the secondary connection bolt hole 154 and the flange concave ring 210 connection protrusion 111 from front to back in sequence to connect the pump cover 100, the primary pump disc 140, the secondary pump disc 150 and the pump bottom 200 to each other. The primary connection bolt hole 144 is provided with a positioning groove 143 at one end facing the secondary pump disc 150, and the secondary connection bolt hole 154 is formed with a positioning protrusion 153 at one end facing the primary pump disc 140. The positioning protrusion 153 and the positioning groove 143 correspond to each other to facilitate the positioning and installation of the primary pump disc 140 and the secondary pump disc 150 when they are connected.

[0042] The first-stage pump disc 140 is provided with a first-stage heat sink 141 evenly distributed circumferentially on the outer wall, and the second-stage pump disc 150 is also provided with a second-stage heat sink 151 evenly distributed circumferentially on the outer wall. Both the first-stage heat sink 141 and the second-stage heat sink 151 increase heat dissipation by increasing the contact area between the outer surface of the pump disc and the outside air.

[0043] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0044] Although various terms are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A high-sealing noise-reducing explosion-proof vortex fan, mainly comprising a pump cover (100), a pump bottom (200), a long shaft sleeve (300), an explosion-proof motor (400) and a shockproof base (500); a pair of mounting feet (120) is formed at the bottom of the pump cover (100), the shockproof base (500) is fixedly connected to the bottom of the fan through the mounting feet (120), and a first air duct (231) and a second air duct (232) are formed at the bottom of the pump bottom (200) as air inlet and outlet ducts; It is characterized in that A flange convex ring (110) and a flange concave ring (210) are formed on the connection edges of the pump cover (100) and the pump bottom (200), and a plurality of corresponding connection protrusions (111) are formed on the flange convex ring (110) and the flange concave ring (210) at equal intervals in the circumferential direction. The fastening bolts (130) pass through the two corresponding connection protrusions (111) from front to back to fasten the pump cover (100) and the pump bottom (200); a convex ring sealing ring (112) is installed on the outer wall of the annular protrusion of the flange convex ring (110), and a concave ring sealing groove (211) is opened on the inner wall of the annular groove of the flange concave ring (210), and the convex ring sealing ring (112) and the concave ring sealing groove (211) are matched with each other; A primary pump disc (140) and a secondary pump disc (150) are installed between the pump cover (100) and the pump bottom (200). The primary pump disc (140) and the secondary pump disc (150) are respectively formed with a primary connection bolt hole (144) and a secondary connection bolt hole (154) at positions corresponding to the connection protrusion (111). When installing and connecting, the long fastening bolts (130) pass through the flange protrusion ring (110), the connection protrusion (111), the primary connection bolt hole (144), and the secondary connection bolt hole (154) in sequence from front to back. (154) and the flange concave ring (210) are connected with the protrusion (111), so as to mutually fix the pump cover (100), the primary pump disc (140), the secondary pump disc (150) and the pump bottom (200); the primary connecting bolt hole (144) is provided with a positioning groove (143) at one end facing the secondary pump disc (150), and the secondary connecting bolt hole (154) is formed with a positioning protrusion (153) at one end facing the primary pump disc (140), and the positioning protrusion (153) and the positioning groove (143) are mutually corresponding; The long shaft sleeve (300) is an annular structure, with shaft sleeve flanges (310) formed at both ends, and the inner ring edge of the shaft sleeve flange (310) protrudes outward to form a shaft sleeve clamp ring (311), and the shaft sleeve clamp ring (311) is sleeved with a shaft sleeve sealing ring (312); the pump bottom (200) and the explosion-proof motor (400) are connected through the long shaft sleeve (300), and the pump bottom (200) is formed with an extended shaft sleeve (220) on the side facing the long shaft sleeve (300), and the extended shaft sleeve (220) is provided with a first shaft sleeve clamping groove (221) at the inner edge, and the explosion-proof motor (400) is provided with a second shaft sleeve clamping groove (410) on the working end surface facing the long shaft sleeve (300), and the first shaft sleeve clamping groove (221) and the second shaft sleeve clamping groove (410) respectively correspond to the shaft sleeve clamping rings (311) at both ends of the long shaft sleeve (300); The anti-vibration base (500) is provided with an elongated motor mounting groove (520), and a vertical motor support column (420) is formed downwardly at the bottom of the explosion-proof motor (400), the bottom of the motor support column (420) abuts against the top of the anti-vibration base (500), and a fixing bolt (421) passes through the motor mounting groove (520) from bottom to top and is fixedly connected to the bottom end of the motor support column (420), thereby fixing the anti-vibration base (500) and the explosion-proof motor (400).

2. A high-sealing noise-reducing explosion-proof vortex blower according to claim 1, characterized in that: The installation foot (120) is provided with a foot bolt groove (121), and the anti-seismic base (500) is provided with a base mounting bolt (510) matching the foot bolt groove (121) at a position corresponding to the installation foot (120), and the anti-seismic base (500) is provided with a base mounting hole (530) on both sides.

3. The high-sealing noise-reducing explosion-proof vortex blower according to claim 1, characterized in that: A plurality of reinforcing ribs (320) connecting the two end sleeve flanges (310) are formed at equal distances in an annular direction on the outer side wall of the long sleeve (300), and a plurality of heat conducting plates (330) are evenly arranged on the outer side wall of the long sleeve (300) between adjacent reinforcing ribs (320).

4. The high-sealing noise-reducing explosion-proof vortex blower according to claim 1, characterized in that: The primary pump disc (140) is provided with a primary air port (142) at the bottom, and the secondary pump disc (150) is provided with a secondary air port (152) at the bottom. The primary air port (142) and the secondary air port (152) correspond to the positions of the air duct on the pump bottom (200). The pump cover (100) and the primary pump disc (140) are combined to form a primary impeller cavity. The secondary pump disc (150) and the pump bottom (200) are combined to form a secondary impeller cavity. The primary impeller cavity and the secondary impeller cavity are connected and transmitted through the primary air port (142) and the secondary air port (152).

5. The high-sealing noise-reducing explosion-proof vortex blower according to claim 1, characterized in that: A plum blossom-shaped shaft sleeve (160) is formed at the center on the opposing surfaces of the primary pump disc (140) and the secondary pump disc (150), and circumferentially distributed structural pieces (161) are formed radiating outward from the plum blossom-shaped protrusion of the plum blossom-shaped shaft sleeve (160), and each structural piece (161) is formed with a corresponding pump disc bolt hole (162).

6. The high-sealing noise-reducing explosion-proof vortex blower according to claim 1, characterized in that: The first-stage pump disc (140) is formed with a third air duct (145) on the side, and the original second air duct (232) is closed and sealed by a sealing cover (233). The first-stage pump disc (140) is provided with first-stage heat sinks (141) evenly distributed in the circumferential direction on the outer wall, and the second-stage pump disc (150) is also provided with second-stage heat sinks (151) evenly distributed in the circumferential direction on the outer wall.

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