A high-efficiency and energy-saving fan for medium-flow, medium-high pressure material transportation

Abstract

The present invention relates to the technical field of material conveying fans, and specifically to a high-efficiency and energy-saving fan for conveying materials with medium flow and medium-high pressure, comprising a fan body, the fan body comprising a base, a bracket fixedly mounted on the top surface of the base, a motor fixedly mounted on the top surface of the bracket, a housing fixedly connected to the front side of the bracket, an impeller body movably mounted inside the fan body, the impeller body comprising a blade disk, a blade disk fixedly connected to the front end of the motor, a first mounting groove provided on the front wall of the blade disk, and a second mounting groove provided on the left side of the first mounting groove. The fan of the present invention can protect the surface of the blades by being provided with a protective structure, effectively improve the strength of the blades, and extend the service life of the blades. At the same time, when the protective shell is replaced, only a single group needs to be replaced, without replacing all of them, thereby saving maintenance costs and improving productivity.

Description

Technical Field

[0001] The invention relates to the technical field of material conveying fans, and in particular to a high-efficiency energy-saving fan for conveying materials with medium flow and medium-high pressure. Background Art

[0002] A centrifugal fan is a driven fluid machine that relies on input mechanical energy to increase gas pressure and discharge the gas. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draft of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selection of grains, etc. Centrifugal fans are based on the principle of converting kinetic energy into potential energy. They use a high-speed rotating impeller to accelerate the gas, then decelerate and change the flow direction, so that the kinetic energy is converted into potential energy (pressure). In a single-stage centrifugal fan, the gas enters the impeller from the axial direction, changes to the radial direction when passing through the impeller, and then enters the diffuser. In the diffuser, the gas changes the flow direction and the cross-sectional area of ​​the pipe increases, which slows down the airflow. This deceleration effect converts kinetic energy into pressure energy. The pressure increase mainly occurs in the impeller, and secondly in the expansion process. In a multi-stage centrifugal fan, a returner is used to allow the airflow to enter the next impeller to generate higher pressure.

[0003] However, when the existing fans are conveying materials, the windward side of the blades is subjected to continuous friction and impact from solid particles, which will cause the blades to wear. At the same time, when conveying some corrosive gases, the erosion and wear of the blades will be aggravated. The wear of the blades will affect the dynamic balance of the fan, causing the vibration of the fan bearing to gradually increase and the noise to increase. If not maintained in time, serious safety accidents will occur. At present, most of the blades are repaired by surfacing with wear-resistant alloys, but this will damage the blade body and reduce the blade strength. At the same time, due to the limitation of the thickness of the blade body, the welding difficulty is high.

[0004] Therefore, in order to solve the above problems, a high-efficiency and energy-saving fan for conveying materials with medium flow and medium-high pressure is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide an efficient and energy-saving fan for conveying materials with medium flow and medium to high pressure, so as to solve the problem mentioned in the above background technology that when conveying materials, the windward surface of the blades of the existing fans is subjected to continuous friction and impact by solid particles, which will cause wear of the blades. At the same time, when conveying some corrosive gases, the erosion and wear of the blades will be aggravated. The wear of the blades will affect the dynamic balance of the fan, gradually increase the vibration of the fan bearing, and increase the noise. If it is not maintained in time, serious safety accidents will occur. At present, most of the blades are repaired by surfacing with wear-resistant alloys, but this will damage the blade body and reduce the strength of the blade. At the same time, due to the limitation of the thickness of the blade body, the welding difficulty is high.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-efficiency and energy-saving fan for conveying materials with medium flow and medium to high pressure, comprising a fan body, the fan body comprising a base, a bracket is fixedly installed on the top surface of the base, a motor is fixedly installed on the top surface of the bracket, the front side of the bracket is fixedly connected to a casing, an impeller body is movably installed inside the fan body, the impeller body comprises a blade disk, a blade disk is fixedly connected to the front end of the motor, a first mounting groove is provided on the front wall of the blade disk, a second mounting groove is provided on the left side of the first mounting groove, a third mounting groove is provided on the lower side of the second mounting groove, a first bolt is movably installed on the back side of the blade disk, and the front side of the blade disk is fixedly connected to the casing. Blades are installed, a fixing ring is fixedly installed at the front end of the blade, a second bolt is movably installed on the front wall of the fixing ring, a protective structure is installed on the impeller body, the protective structure includes an outer cylinder, an outer cylinder is movably installed in the middle of the front of the blade disc, a fixing rod is fixedly welded to the side of the outer cylinder, a movable groove is opened inside the fixing rod, a fixing seat is fixedly connected to the top end of the fixing rod, a protective shell is movably installed inside the fixing seat, a receiving groove is opened on the inner side wall of the protective shell, a sliding groove is opened on the rear side wall of the receiving groove, a third bolt is movably installed on the top surface of the protective shell, a connecting plate is fixedly connected to the inner side wall of the fixing seat, and an adjustment structure is installed inside the protective structure.

[0007] Preferably, the adjustment structure includes a rotating cylinder, the inner side of the outer cylinder is threadedly connected to the rotating cylinder, a hand wheel is fixedly installed on the front side of the rotating cylinder, a gear is fixedly connected to the rear wall of the rotating cylinder, a gear ring is movably installed on the outer side of the gear, a fixed shaft is fixedly welded to the outer wall of the gear ring, a connecting rod is movably installed on the inner side of the fixed shaft, an adjustment plate is movably installed inside the storage groove, and a transition plate is movably installed on the left side of the adjustment plate.

[0008] Preferably, the blade is located at the edge of the front side of the blade disk, a circular groove is opened in the middle of the front side of the blade disk, the outer cylinder is installed inside the groove, the first mounting groove is connected to the third mounting groove, and the second mounting groove is connected to the third mounting groove and the groove.

[0009] Preferably, the front end of the first bolt is threadedly connected to the rear wall of the outer cylinder, the blades are arc-shaped, the blades are circumferentially distributed on the edge of the front side of the blade disk, the fixing ring is annular, and the blades are fixedly connected to the fixing ring by a second bolt.

[0010] Preferably, the outer cylinder is a cylindrical structure, the outer cylinder is sleeved on the front end of the motor, a through groove is provided on the side wall of the outer cylinder, and a threaded groove is provided on the inner side wall of the outer cylinder.

[0011] Preferably, the fixing rod is installed inside the second mounting groove, the front side of the fixing rod is flush with the front side of the blade disk, the fixing seat is installed inside the first mounting groove, the front side of the fixing seat is flush with the front side of the blade disk, and the fixing seat is an arc-shaped structure.

[0012] Preferably, the protective shell is installed on the inner side of the fixing seat, the blades are installed on the inner side of the protective shell, the protective shell is fixedly connected to the receiving groove by a third bolt, the connecting plate is installed inside the third mounting groove, and the front side of the connecting plate is flush with the front side of the blade disk.

[0013] Preferably, the rotating cylinder is of cylindrical structure, the rotating cylinder is located outside the front end of the motor, the gear is of annular structure, the gear is meshed with the gear ring, the connecting rod passes through the side wall of the outer cylinder via a through groove, and the connecting rod is movably connected to the outer cylinder.

[0014] Preferably, the middle section of the connecting rod is located on the inner side of the movable groove, a fixing column is provided on the back side of the adjusting plate, and the fixing column is located on the inner side of the sliding groove, and the top end of the connecting rod is movably connected to the fixing column on the back side of the adjusting plate.

[0015] Preferably, the bottom end of the transition plate is located at the bottom end of the storage groove, the bottom end of the adjustment plate is located in the middle of the back of the transition plate, the top end of the transition plate is located in the middle of the adjustment plate, and the adjustment plate and the transition plate are both arc-shaped structures.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the fan of the present invention is provided with a protective structure to protect the surface of the blades, effectively improve the strength of the blades, and extend the service life of the blades. At the same time, when the protective shell is replaced, only a single group needs to be replaced without replacing all of them, thereby saving maintenance costs and improving productivity.

[0017] A protective shell is provided, and the protective shell is sleeved on the outside of the blade, which can provide all-round protection for the surface of the blade, effectively improve the strength of the blade, and extend the service life of the blade. A fixing rod is provided to ensure the connection strength between the fixing seat and the outer cylinder, so that when the protective structure is installed, ten groups of fixing seats can be installed at the same time by installing the outer cylinder on the front of the blade disk, thereby improving the convenience of installation. A third bolt and a second bolt are provided. When replacing the blade, it is only necessary to remove the corresponding second bolt and third bolt to remove the damaged single group of blades without replacing all of them, thereby saving maintenance costs and improving productivity.

[0018] A rotating cylinder is provided, and the rotating cylinder is driven to rotate by rotating the hand wheel. At the same time, the rotation of the rotating cylinder will drive the gear to rotate, so that the angle of the connecting rod is deflected. A fixed column is provided, so that the deflection of the angle of the connecting rod can drive the angle of the adjusting plate to deflect through the fixed column, so that the top of the adjusting plate is exposed from the inside of the storage groove. At the same time, the adjusting plate will push the transition plate to flip out from the inside of the storage groove, so that the inner wall of the protective shell is bent, the interval between the ends of two adjacent groups of protective shells is reduced, the wind loss is reduced, and the maximum value in the middle of the HQ curve is avoided, so as to ensure the stable operation of the fan body and reduce the noise generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic front view of the structure of the fan body of the present invention;

[0020] Figure 2 It is a schematic front view of the structure of the fixing ring of the present invention;

[0021] Figure 3 It is a schematic front cross-sectional view of the structure of the blade of the present invention;

[0022] Figure 4 It is a schematic side cross-sectional view of the structure of the blade disk of the present invention;

[0023] Figure 5 It is a schematic front cross-sectional view of the structure of the movable groove of the present invention;

[0024] Figure 6 It is a schematic side cross-sectional view of the structure of the outer cylinder of the present invention;

[0025] Figure 7 It is a schematic front cross-sectional view of the structure of the storage tank of the present invention;

[0026] Figure 8 It is a schematic side view of the structure of the adjustment plate of the present invention.

[0027] In the figure: 1. fan body; 11. base; 12. bracket; 13. motor; 14. casing; 2. impeller body; 21. blade disk; 22. first mounting slot; 23. second mounting slot; 24. third mounting slot; 25. first bolt; 26. blade; 27. fixing ring; 28. second bolt; 3. protective structure; 31. outer cylinder; 32. fixing rod; 33. movable slot; 34. fixing seat; 35. protective shell; 36. storage slot; 37. slide slot; 38. third bolt; 39. connecting plate; 4. adjustment structure; 41. rotating cylinder; 42. hand wheel; 43. gear; 44. gear ring; 45. fixed shaft; 46. connecting rod; 47. adjustment plate; 48. transition plate. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-8 An embodiment of the present invention is as follows: a high-efficiency and energy-saving fan for conveying materials with medium flow and medium-high pressure, comprising a fan body 1, the fan body 1 comprising a base 11, a bracket 12 is fixedly mounted on the top surface of the base 11, a motor 13 is fixedly mounted on the top surface of the bracket 12, a housing 14 is fixedly connected to the front side of the bracket 12, an impeller body 2 is movably mounted inside the fan body 1, the impeller body 2 comprises a blade disk 21, the front end of the motor 13 is fixedly connected to the blade disk 21, a first mounting groove 22 is provided on the front wall of the blade disk 21, a second mounting groove 23 is provided on the left side of the first mounting groove 22, a third mounting groove 24 is provided on the lower side of the second mounting groove 23, a first bolt 25 is movably mounted on the back side of the blade disk 21, and a blade 26 is fixedly mounted on the front side of the blade disk 21 A fixing ring 27 is fixedly installed at the front end of the blade 26, and a second bolt 28 is movably installed on the front wall of the fixing ring 27. A protective structure 3 is installed on the impeller body 2, and the protective structure 3 includes an outer cylinder 31. The outer cylinder 31 is movably installed in the middle of the front of the blade disk 21, and a fixing rod 32 is fixedly welded to the side of the outer cylinder 31. A movable groove 33 is opened inside the fixing rod 32, and a fixing seat 34 is fixedly connected to the top of the fixing rod 32. A protective shell 35 is movably installed inside the fixing seat 34, and a receiving groove 36 is opened on the inner side wall of the protective shell 35. A sliding groove 37 is opened on the rear side wall of the receiving groove 36. A third bolt 38 is movably installed on the top surface of the protective shell 35, and a connecting plate 39 is fixedly connected to the inner side wall of the fixing seat 34. An adjusting structure 4 is installed inside the protective structure 3.

[0030] Furthermore, the adjustment structure 4 includes a rotating cylinder 41, the inner side of the outer cylinder 31 is threadedly connected to the rotating cylinder 41, a hand wheel 42 is fixedly installed on the front of the rotating cylinder 41, a gear 43 is fixedly connected to the rear wall of the rotating cylinder 41, a gear ring 44 is movably installed on the outer side of the gear 43, a fixed shaft 45 is fixedly welded to the outer wall of the gear ring 44, a connecting rod 46 is movably installed on the inner side of the fixed shaft 45, an adjustment plate 47 is movably installed inside the storage groove 36, and a transition plate 48 is movably installed on the left side of the adjustment plate 47, so that the transition plate 48 is flipped out from the inside of the storage groove 36, so that the inner wall of the protective shell 35 is bent, the interval between the ends of two adjacent groups of protective shells 35 is reduced, the wind loss is reduced, and the maximum value in the middle of the HQ curve is avoided, so as to ensure the stable operation of the fan body 1 and reduce the noise generation.

[0031] Furthermore, the blade 26 is located at the edge of the front side of the blade disk 21, and a circular groove is opened in the middle of the front side of the blade disk 21. The outer cylinder 31 is installed inside the groove. The first mounting groove 22 is connected to the third mounting groove 24, and the second mounting groove 23 is connected to the third mounting groove 24 and the groove, providing a position for the installation of the outer cylinder 31 and ensuring the stability of the installation between the outer cylinder 31 and the fixing rod 32.

[0032] Furthermore, the front end of the first bolt 25 is threadedly connected to the rear side wall of the outer cylinder 31, the blade 26 is an arc-shaped structure, and the blade 26 is circumferentially distributed on the edge of the front side of the blade disk 21. The fixing ring 27 is an annular structure. The blade 26 and the fixing ring 27 are fixedly connected by the second bolt 28, so that the outer cylinder 31 can be fixedly installed on the bracket 12, and the front end of the blade 26 is fixed to ensure the stability of the connection between the blade 26 and the fixing ring 27.

[0033] Furthermore, the outer cylinder 31 is a cylindrical structure, and the outer cylinder 31 is sleeved on the front end of the motor 13. A through groove is opened on the side wall of the outer cylinder 31, and a threaded groove is opened on the inner wall of the outer cylinder 31 to provide space for the connecting rod 46 to pass through the outer cylinder 31, so that the connecting rod 46 can move inside the through groove, which is convenient for the outer cylinder 31 to engage with the rotating cylinder 41 and control the rotation of the gear 43.

[0034] Furthermore, the fixing rod 32 is installed inside the second mounting groove 23, and the front side of the fixing rod 32 is flush with the front side of the blade disk 21. The fixing seat 34 is installed inside the first mounting groove 22, and the front side of the fixing seat 34 is flush with the front side of the blade disk 21. The fixing seat 34 is an arc-shaped structure, which ensures that the surface of the blade disk 21 is flat, reduces the resistance to material transportation, and improves the rotation stability of the blade disk 21.

[0035] Furthermore, the protective shell 35 is installed on the inner side of the fixing seat 34, and the blade 26 is installed on the inner side of the protective shell 35. The protective shell 35 and the receiving groove 36 are fixedly connected by a third bolt 38. The connecting plate 39 is installed inside the third mounting groove 24. The front side of the connecting plate 39 is flush with the front side of the blade disk 21, providing space for the installation of the protective shell 35, protecting the surface of the blade 26, effectively improving the strength of the blade 26, and extending the service life of the blade 26.

[0036] Furthermore, the rotating cylinder 41 is a cylindrical structure, and the rotating cylinder 41 is located on the outer side of the front end of the motor 13. The gear 43 is an annular structure, and the gear 43 is meshed with the gear ring 44. The connecting rod 46 passes through the side wall of the outer cylinder 31 via a through groove, and the connecting rod 46 is movably connected to the outer cylinder 31, so that the rotation of the gear 43 can drive the angle of the gear ring 44 to deflect, so that the storage groove 36 deflects at an angle inside the movable groove 33, which is convenient for controlling the movement of the adjustment plate 47.

[0037] Furthermore, the middle section of the connecting rod 46 is located on the inner side of the movable groove 33, a fixing column is provided on the back side of the adjusting plate 47, and the fixing column is located on the inner side of the sliding groove 37, and the top end of the connecting rod 46 is movably connected with the fixing column on the back side of the adjusting plate 47, so that the connecting rod 46 can rotate inside the movable groove 33, providing space for the movement of the connecting rod 46, so that the connecting rod 46 can drive the adjusting plate 47 to deflect the angle via the fixing column, so that the top end of the adjusting plate 47 is exposed from the inside of the receiving groove 36, and at the same time the adjusting plate 47 will push the transition plate 48 to flip out from the inside of the receiving groove 36.

[0038] Furthermore, the bottom end of the transition plate 48 is located at the bottom end of the storage groove 36, the bottom end of the adjustment plate 47 is located in the middle of the back of the transition plate 48, and the top end of the transition plate 48 is located in the middle of the adjustment plate 47. The adjustment plate 47 and the transition plate 48 are both arc-shaped structures, so that the adjustment plate 47 is exposed from the inside of the storage groove 36, which can drive the transition plate 48 to flip out from the inside of the storage groove 36, so that a transition area is provided between the inner wall of the protective shell 35 and the curved arc of the adjustment plate 47, thereby further reducing wind loss and noise generation.

[0039] Working principle: When in use, the protective shell 35 can provide all-round protection for the surface of the blade 26, effectively improve the strength of the blade 26, and extend the service life of the blade 26. When the protective shell 35 needs to be replaced, the second bolt 28 can be unscrewed and the fixing ring 27 can be removed to release the front end of the blade 26, and then the third bolt 38 can be unscrewed to release the blade 26 and the protective shell 35. Then the protective shell 35 can be pulled off the blade 26, and a new protective shell 35 can be put on the blade 26. Then the third bolt 38 and the second bolt 28 can be re-screwed to realize the convenient replacement of the protective shell 35 without replacing all of it, thereby saving maintenance costs and improving productivity.

[0040] At the same time, when in use, the hand wheel 42 can be rotated, and the hand wheel 42 will drive the rotating cylinder 41 to rotate. At the same time, the rotation of the rotating cylinder 41 will drive the gear 43 to rotate, so that the angle of the connecting rod 46 inside the movable groove 33 is deflected, and then the connecting rod 46 will drive the angle of the adjusting plate 47 to deflect through the fixed column, so that the top of the adjusting plate 47 is exposed from the inside of the storage groove 36. At the same time, the adjusting plate 47 will push the transition plate 48 to flip out from the inside of the storage groove 36, providing a transition area between the inner side wall of the protective shell 35 and the curved arc of the adjusting plate 47, reducing wind resistance, bending the inner side wall of the protective shell 35, reducing the interval between the ends of two adjacent groups of protective shells 35, reducing wind loss, avoiding the maximum value in the middle of the HQ curve, ensuring the stable operation of the fan body 1, and reducing noise generation.

[0041] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A high-efficiency and energy-saving fan for conveying materials with medium flow and medium to high pressure, comprising a fan body (1), characterized in that: The fan body (1) comprises a base (11), a bracket (12) is fixedly mounted on the top surface of the base (11), a motor (13) is fixedly mounted on the top surface of the bracket (12), a housing (14) is fixedly connected to the front side of the bracket (12), an impeller body (2) is movably mounted inside the fan body (1), the impeller body (2) comprises a blade disk (21), the front end of the motor (13) is fixedly connected to the blade disk (21), a first mounting groove (22) is provided on the front wall of the blade disk (21), a second mounting groove (23) is provided on the left side of the first mounting groove (22), a third mounting groove (24) is provided on the lower side of the second mounting groove (23), a first bolt (25) is movably mounted on the back side of the blade disk (21), a blade (26) is fixedly mounted on the front side of the blade disk (21), a fixing ring (27) is fixedly mounted on the front end of the blade (26), the ... A second bolt (28) is movably mounted on the front wall of the fixed ring (27); a protective structure (3) is mounted on the impeller body (2); the protective structure (3) comprises an outer cylinder (31); an outer cylinder (31) is movably mounted on the middle part of the front face of the blade disk (21); a fixing rod (32) is fixedly welded to the side of the outer cylinder (31); a movable groove (33) is provided inside the fixing rod (32); a fixing seat (34) is fixedly connected to the top end of the fixing rod (32); a protective shell (35) is movably mounted inside the fixing seat (34); a receiving groove (36) is provided on the inner side wall of the protective shell (35); a sliding groove (37) is provided on the rear side wall of the receiving groove (36); a third bolt (38) is movably mounted on the top surface of the protective shell (35); a connecting plate (39) is fixedly connected to the inner side wall of the fixing seat (34); an adjusting structure (4) is mounted inside the protective structure (3).

2. According to claim 1, a high-efficiency energy-saving blower for medium-flow, medium-high pressure material transportation is characterized by: The adjustment structure (4) comprises a rotating cylinder (41), the inner side of the outer cylinder (31) is threadedly connected to the rotating cylinder (41), a hand wheel (42) is fixedly mounted on the front side of the rotating cylinder (41), a gear (43) is fixedly connected to the rear wall of the rotating cylinder (41), a gear ring (44) is movably mounted on the outer side of the gear (43), a fixed shaft (45) is fixedly welded to the outer wall of the gear ring (44), a connecting rod (46) is movably mounted on the inner side of the fixed shaft (45), an adjustment plate (47) is movably mounted inside the storage groove (36), and a transition plate (48) is movably mounted on the left side of the adjustment plate (47).

3. The high-efficiency energy-saving blower for medium flow, medium and high pressure material transportation according to claim 1, characterized in that: The blade (26) is located at the edge of the front side of the blade disk (21); a circular groove is provided in the middle of the front side of the blade disk (21); the outer cylinder (31) is installed inside the groove; the first installation groove (22) is communicated with the third installation groove (24); and the second installation groove (23) is communicated with the third installation groove (24) and the groove.

4. The high-efficiency energy-saving blower for medium flow, medium and high pressure material transportation according to claim 1, characterized in that: The front end of the first bolt (25) is threadedly connected to the rear side wall of the outer cylinder (31); the blade (26) is an arc-shaped structure; the blade (26) is distributed in a circumferential direction on the edge of the front side of the blade disk (21); the fixing ring (27) is an annular structure; the blade (26) and the fixing ring (27) are fixedly connected by a second bolt (28).

5. The high-efficiency energy-saving blower for medium flow, medium and high pressure material transportation according to claim 1, characterized in that: The outer cylinder (31) is a cylindrical structure, and is sleeved on the front end of the motor (13). A through groove is provided on the side wall of the outer cylinder (31), and a threaded groove is provided on the inner wall of the outer cylinder (31).

6. The high-efficiency energy-saving blower for conveying medium-flow, medium-high pressure materials according to claim 1, characterized in that: The fixing rod (32) is installed inside the second installation groove (23), and the front face of the fixing rod (32) is flush with the front face of the blade disk (21); the fixing seat (34) is installed inside the first installation groove (22), and the front face of the fixing seat (34) is flush with the front face of the blade disk (21); the fixing seat (34) is an arc-shaped structure.

7. The high-efficiency energy-saving blower for conveying materials with medium flow and medium-high pressure according to claim 1, characterized in that: The protective shell (35) is installed on the inner side of the fixing seat (34), the blade (26) is installed on the inner side of the protective shell (35), the protective shell (35) and the receiving groove (36) are fixedly connected by a third bolt (38), the connecting plate (39) is installed inside the third installation groove (24), and the front side of the connecting plate (39) is flush with the front side of the blade disk (21).

8. The high-efficiency energy-saving blower for conveying materials with medium flow and medium-high pressure according to claim 2, characterized in that: The rotating cylinder (41) is of a cylindrical structure and is located outside the front end of the motor (13). The gear (43) is of an annular structure and meshes with the gear ring (44). The connecting rod (46) passes through the side wall of the outer cylinder (31) via a through groove, and the connecting rod (46) is movably connected to the outer cylinder (31).

9. The high-efficiency energy-saving blower for conveying materials with medium flow and medium-high pressure according to claim 2, characterized in that: The middle section of the connecting rod (46) is located on the inner side of the movable groove (33), a fixing column is provided on the back side of the adjusting plate (47), and the fixing column is located on the inner side of the sliding groove (37), and the top end of the connecting rod (46) is movably connected to the fixing column on the back side of the adjusting plate (47).

10. The high-efficiency energy-saving blower for conveying materials with medium flow and medium-high pressure according to claim 2, characterized in that: The bottom end of the transition plate (48) is located at the bottom end of the storage groove (36), the bottom end of the adjustment plate (47) is located at the middle of the back of the transition plate (48), the top end of the transition plate (48) is located at the middle of the adjustment plate (47), and the adjustment plate (47) and the transition plate (48) are both arc-shaped structures.

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