Diffuser mechanism of centrifugal machine

Abstract

The utility model belongs to the technical field of centrifugal machines, and particularly relates to a centrifugal machine diffuser mechanism which comprises a base, blades are installed on a diffuser, two sets of grooves are symmetrically formed in the side wall of the diffuser, a sliding groove is formed in a guide plate, two sets of sliding blocks are symmetrically assembled in the sliding groove, clamping plates are welded to the sliding blocks, and the clamping plates are welded to the guide plate. A first ball is rotatably installed in the first circular groove, a second ball is rotatably installed in the second circular groove, the second ball is assembled in the groove, the two sets of sliding blocks drive the two sets of clamping plates to synchronously and relatively move, the two sets of clamping plates are attached to the side wall of the diffuser, and at the moment, the two sets of clamping plates clamp and fix the diffuser. The second balls are clamped in the grooves of the diffuser to limit the diffuser in the left-right direction and the up-down direction, and the clamping plates limit the diffuser in the front-back direction, so that efficient limiting of the diffuser is achieved, noise and vibration of the diffuser are avoided, and the stability of the diffuser is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifuges, in particular to a centrifuge diffuser mechanism. Background Art

[0002] Centrifuge is an important process equipment that provides gas power in industrial production. It is widely used in many important industries such as steel, cement, electricity, coal mining, petrochemical, waste gas and sewage treatment. The air accelerated by the impeller in the centrifuge is decelerated through the diffuser and converted into pressure.

[0003] A Chinese patent with publication number CN111336115A discloses a centrifugal impeller assembly and a centrifugal unit with variable speed adjustment, the centrifugal impeller assembly includes: a housing; a centrifugal impeller; a diffuser blade; a connecting shaft for driving the diffuser blade to rotate; the connecting shaft is connected to the diffuser blade, and the diffuser blade is rotatably arranged on the housing; a variable geometry adjustment mechanism for driving the connecting shaft to rotate to adjust the installation angle of the diffuser blade in the housing; a locking assembly for locking the centrifugal impeller. The centrifugal unit including the above-mentioned centrifugal impeller assembly provided by the embodiment of the present invention is convenient for rapid adjustment of the diffuser, and can use both direct drive and adjustable diffuser to meet the working conditions of repeated rapid changes in working conditions.

[0004] During the operation of the existing centrifuge diffuser, the diffuser is prone to surge, causing the vibration value of the rotating shaft to increase sharply. If it runs in surge for a long time, the rotating shaft will be damaged. In severe cases, it will cause functional damage and lead to poor stability of the diffuser. Therefore, a centrifuge diffuser mechanism is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the problems existing in the prior art, the utility model proposes a centrifuge diffuser mechanism.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a centrifuge diffuser mechanism described in the utility model comprises a base, a support seat is installed on the base, a volute is installed on the support seat, a stator is installed on the side wall of the volute, a rotating shaft passes through the stator, a diffuser is installed on the rotating shaft through a bearing, blades are installed on the diffuser, two groups of grooves are symmetrically opened on the side wall of the diffuser, the grooves are annular structures, a positioning assembly is symmetrically installed on the inner wall of the volute, the positioning assembly comprises a guide plate, a slide groove is opened in the guide plate, a screw rod is rotatably installed on the inner wall of the slide groove, the thread directions on the screw rod are symmetrically opposite, a knob is welded at one end of the screw rod, and the groove is symmetrically opened in the inner wall of the slide groove. Two groups of sliders are equipped, and a clamping plate is welded on the slider. A plurality of first circular grooves and a second circular groove are opened on the inner wall of the clamping plate. A first ball is rotatably installed in the first circular groove, and a second ball is rotatably installed in the second circular groove. The first ball is in contact with the side wall of the diffuser, and the second ball is installed in the groove. The two groups of sliders drive the two groups of clamping plates to move synchronously relative to each other, so that the two groups of clamping plates are in contact with the side wall of the diffuser. At this time, the two groups of clamping plates clamp and fix the diffuser, and the second ball is stuck in the groove of the diffuser to limit the diffuser in the left and right directions and the up and down directions, while the clamping plate limits the diffuser in the front and back directions, thereby realizing efficient limiting of the diffuser, avoiding noise and vibration of the diffuser, and being beneficial to improving the stability of the diffuser.

[0007] Preferably, an air inlet is provided on the side wall of the volute, an exhaust port is provided on the side wall of the volute, an exhaust pipe is installed on the volute at the exhaust port, an impeller is rotatably installed on the rotating shaft through a bearing, a wheel cover is installed on the impeller, a speed-increasing gear is fixedly sleeved on the rotating shaft, a driving gear is rotatably installed on the side wall of the volute, the driving gear and the speed-increasing gear are meshed with each other, a fixing seat is installed on the base, a machine base is installed on the fixing seat, a motor is installed on the machine base, and the output shaft of the motor is fixedly connected to the driving gear. After the gas enters the diffuser, due to the high speed of rotation of the rotating shaft and the shape of the blades, the gas is forced to move outward and generates centrifugal force on the blades. Under the action of centrifugal force, the pressure of the gas gradually increases, and then the pressurized gas is output through the exhaust pipe. In the process of completing the diffusion, it is beneficial to improve the supercharging effect of the diffuser.

[0008] The utility model is beneficial in that:

[0009] 1. The utility model drives two groups of clamping plates to move synchronously relative to each other through two groups of sliders, so that the two groups of clamping plates are attached to the side walls of the diffuser. At this time, the two groups of clamping plates clamp and fix the diffuser, and the second ball is stuck in the groove of the diffuser to limit the diffuser in the left and right and up and down directions, while the clamping plates limit the diffuser in the front and back directions, thereby realizing efficient limiting of the diffuser, avoiding noise and vibration of the diffuser, and being beneficial to improving the stability of the diffuser.

[0010] 2. After the gas enters the diffuser through the utility model, due to the high speed of the rotating shaft and the shape of the blades, the gas is forced to move outward and generates centrifugal force on the blades. Under the action of the centrifugal force, the pressure of the gas gradually increases, and then the pressurized gas is output through the exhaust pipe, completing the process of pressure diffusion, which is beneficial to improving the pressure-boosting effect of the diffuser. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0012] Figure 1 It is a schematic diagram of a three-dimensional structure from a first-person perspective;

[0013] Figure 2 It is a schematic diagram of the internal three-dimensional structure of the volute;

[0014] Figure 3 It is a schematic diagram of the three-dimensional structure of the positioning component;

[0015] Figure 4 It is a schematic diagram of the three-dimensional structure of the splint;

[0016] Figure 5 It is a schematic diagram of the three-dimensional structure of the motor.

[0017] In the figure: 1. base; 2. support base; 3. volute; 4. air inlet; 5. exhaust pipe; 6. stator; 7. rotating shaft; 8. diffuser; 9. blades; 10. groove; 11. guide plate; 12. slide groove; 13. screw rod; 14. knob; 15. slider; 16. clamping plate; 17. first ball bearing; 18. second ball bearing; 19. impeller; 20. wheel cover; 21. speed increasing gear; 22. driving gear; 23. fixed seat; 24. base; 25. motor. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-5As shown, a centrifuge diffuser mechanism comprises a base 1, a support base 2 is mounted on the base 1, a volute 3 is mounted on the support base 2, a stator 6 is mounted on the side wall of the volute 3, a rotating shaft 7 is passed through the stator 6, a diffuser 8 is mounted on the rotating shaft 7 through a bearing, a blade 9 is mounted on the diffuser 8, two groups of grooves 10 are symmetrically opened on the side wall of the diffuser 8, the grooves 10 are annular structures, a positioning assembly is symmetrically installed on the inner wall of the volute 3, the positioning assembly comprises a guide plate 11, a slide groove 12 is opened in the guide plate 11, a screw rod 13 is rotatably installed on the inner wall of the slide groove 12, the threads on the screw rod 13 are symmetrically opposite, and one end of the screw rod 13 is symmetrically opposite to the other end of the screw rod 13. A knob 14 is welded, two groups of sliders 15 are symmetrically assembled in the slide groove 12, a clamping plate 16 is welded on the slider 15, a plurality of first circular grooves and a second circular groove are opened on the inner wall of the clamping plate 16, a first ball 17 is rotatably installed in the first circular groove, a second ball 18 is rotatably installed in the second circular groove, the first ball 17 is attached to the side wall of the diffuser 8, and the second ball 18 is assembled in the groove 10, an air inlet 4 is opened on the side wall of the volute 3, an exhaust port is opened on the side wall of the volute 3, an exhaust pipe 5 is installed at the exhaust port of the volute 3, an impeller 19 is rotatably installed on the rotating shaft 7 through a bearing, a wheel cover 20 is installed on the impeller 19, and a rotating shaft 7 is provided. The fixed sleeve is provided with a speed-increasing gear 21, a driving gear 22 is rotatably installed on the side wall of the volute 3, the driving gear 22 and the speed-increasing gear 21 are meshed with each other, a fixed seat 23 is installed on the fixed seat 23, a machine base 24 is installed on the machine base 24, and a motor 25 is installed on the machine base 24, and the output shaft of the motor 25 is fixedly connected with the driving gear 22; when working, the existing centrifuge diffuser 8 is in the process of operation, the diffuser 8 is prone to surge, causing the vibration value of the rotating shaft 7 to increase sharply. If it runs for a long time in surge, the rotating shaft 7 will be damaged, and in severe cases, the function will be damaged, resulting in poor stability of the diffuser 8, which is operated by the motor 25. The driving gear 22 is driven to rotate, the driving gear 22 drives the speed increasing gear 21 to rotate, the speed increasing gear 21 drives the rotating shaft 7 to rotate at a high speed, the rotating shaft 7 drives the diffuser 8 and the impeller 19 to rotate at a high speed, the impeller 19 rotates at a high speed, and the gas is introduced into the volute 3. When the rotating shaft 7 rotates, the gas is compressed due to the centrifugal force. After the gas enters the diffuser 8, due to the high speed of the rotating shaft 7 and the shape of the blades 9, the gas is forced to move outward and generates centrifugal force on the blades 9. Under the action of the centrifugal force, the pressure of the gas gradually increases, and then the pressurized gas is output through the exhaust pipe 5, completing the process of pressure diffusion;

[0020] During this process, the rotating shaft 7 drives the diffuser 8 to rotate at a high speed, and the diffuser 8 is prone to noise and vibration. By installing two sets of positioning components, the knob 14 is turned to drive the screw rod 13 to rotate, and the screw rod 13 drives the two sets of sliders 15 thereon to move synchronously relative to each other. The two sets of sliders 15 drive the two sets of clamping plates 16 to move synchronously relative to each other, so that the two sets of clamping plates 16 are attached to the side walls of the diffuser 8. At this time, the two sets of clamping plates 16 clamp and fix the diffuser 8. By installing the first ball 17 and the second ball 17 on the surface of the clamping plate 16, the first ball 17 and the second ball 17 are installed on the surface of the clamping plate 16. The diffuser 8 has sliding friction with the first ball 17 and the second ball 18 on the clamping plate 16 when rotating, so the diffuser 8 can still rotate freely, and the second ball 18 is stuck in the groove 10 of the diffuser 8. The two groups of second balls 18 cooperate to limit the diffuser 8 in the left and right directions and the up and down directions, while the clamping plate 16 limits the diffuser 8 in the front and back directions, thereby realizing efficient limiting of the diffuser 8, avoiding noise and vibration of the diffuser 8, and being beneficial to improving the stability of the diffuser 8.

[0021] Working principle: during the operation of the existing centrifuge diffuser 8, the diffuser 8 is prone to surge, causing the vibration value of the rotating shaft 7 to increase sharply. If it runs for a long time in surge, the rotating shaft 7 will be damaged. In severe cases, it will cause functional damage, resulting in poor stability of the diffuser 8. The motor 25 drives the driving gear 22 to rotate, and the driving gear 22 drives the speed-increasing gear 21 to rotate. The speed-increasing gear 21 drives the rotating shaft 7 to rotate at a high speed. The rotating shaft 7 drives the diffuser 8 and the impeller 19 to rotate at a high speed. The impeller 19 rotates at a high speed to introduce gas into the volute 3. When the rotating shaft 7 rotates, the gas is compressed due to the centrifugal force. After the gas enters the diffuser 8, due to the high speed of the rotating shaft 7 and the shape of the blades 9, the gas is forced to move outward and generates centrifugal force on the blades 9. Under the action of centrifugal force, the pressure of the gas gradually increases, and then the pressurized gas is output through the exhaust pipe 5 to complete the diffusion process; in this process, the rotating shaft 7 drives The diffuser 8 rotates at a high speed, and the diffuser 8 is prone to noise and vibration. By installing two sets of positioning components, the knob 14 is turned to drive the screw rod 13 to rotate, and the screw rod 13 drives the two sets of sliders 15 thereon to move relatively synchronously, and the two sets of sliders 15 drive the two sets of clamping plates 16 to move relatively synchronously, so that the two sets of clamping plates 16 are attached to the side wall of the diffuser 8. At this time, the two sets of clamping plates 16 clamp and fix the diffuser 8. By installing the first ball 17 and the second ball 18 on the surface of the clamping plate 16, the diffuser 8 is When the diffuser 8 rotates, sliding friction occurs between the first ball 17 and the second ball 18 on the clamping plate 16, so the diffuser 8 can still rotate freely, and the second ball 18 is stuck in the groove 10 of the diffuser 8. The two groups of second balls 18 cooperate to limit the diffuser 8 in the left and right directions and the up and down directions, while the clamping plate 16 limits the diffuser 8 in the front and back directions, thereby achieving efficient limiting of the diffuser 8, avoiding noise and vibration of the diffuser 8, and helping to improve the stability of the diffuser 8.

[0022] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A centrifuge diffuser mechanism, characterized in that: The invention comprises a base (1), a support base (2) is mounted on the base (1), a volute (3) is mounted on the support base (2), a stator (6) is mounted on the side wall of the volute (3), a rotating shaft (7) runs through the stator (6), a diffuser (8) is mounted on the rotating shaft (7) via a bearing, a blade (9) is mounted on the diffuser (8), two groups of grooves (10) are symmetrically provided on the side wall of the diffuser (8), the grooves (10) are annular structures, a positioning assembly is symmetrically provided on the inner wall of the volute (3), the positioning assembly comprises a guide plate (11), a slide groove (12) is provided in the guide plate (11) A screw rod (13) is rotatably mounted on the inner wall of the slide groove (12), the screw threads (13) are symmetrically opposite in direction, a knob (14) is welded to one end of the screw rod (13), two groups of sliders (15) are symmetrically mounted in the slide groove (12), a clamping plate (16) is welded to the slider (15), a plurality of first circular grooves and a second circular groove are provided on the inner wall of the clamping plate (16), a first ball (17) is rotatably mounted in the first circular groove, a second ball (18) is rotatably mounted in the second circular groove, the first ball (17) is in contact with the side wall of the diffuser (8), and the second ball (18) is mounted in the groove (10).

2. A centrifuge diffuser mechanism according to claim 1, characterized in that: An air inlet (4) is provided on the side wall of the volute (3), an exhaust port is provided on the side wall of the volute (3), and an exhaust pipe (5) is installed at the exhaust port of the volute (3).

3. A centrifuge diffuser mechanism according to claim 1, characterized in that: An impeller (19) is rotatably mounted on the rotating shaft (7) via a bearing, and a wheel cover (20) is mounted on the impeller (19).

4. A centrifuge diffuser mechanism according to claim 1, characterized in that: A speed increasing gear (21) is fixedly sleeved on the rotating shaft (7), and a driving gear (22) is rotatably mounted on the side wall of the volute (3).

5. A centrifuge diffuser mechanism according to claim 4, characterized in that: The driving gear (22) and the speed increasing gear (21) are meshed with each other. A fixing seat (23) is installed on the base (1), and an organic seat (24) is installed on the fixing seat (23).

6. A centrifuge diffuser mechanism according to claim 5, characterized in that: A motor (25) is mounted on the machine base (24), and an output shaft of the motor (25) is fixedly connected to the driving gear (22).

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