Centrifugal high-pressure fan

Abstract

The utility model relates to the technical field of fans, and discloses a centrifugal high-pressure fan which comprises a base, a motor is fixedly connected to the upper surface of the base, a mounting sleeve is slidably connected to the output end of the motor, and a positioning assembly is arranged at one end of the mounting sleeve; the positioning assembly comprises a rotating block, the end, away from the output end of the motor, of the rotating block is fixedly connected to one end of the mounting sleeve, the end, away from the mounting sleeve, of the rotating block is fixedly connected with a ball, the outer wall of the ball is rotationally connected with a connecting plate, and a first spring is fixedly connected into the connecting plate. One end of the first spring is fixedly connected with an extrusion rod, and the interior of the extrusion rod is rotationally connected with a fixing rod. According to the utility model, the ball is arranged to rotate in the connecting plate, so that the mounting sleeve can rotate during mounting, and the coupler is designed to be rotatable, so that the strict requirement on coaxiality during mounting of the motor shaft and the impeller shaft is greatly reduced, and the mounting efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan technical field especially centrifugal high pressure fan. BACKGROUND

[0002] Centrifugal high pressure fan occupies the pivotal position in modern industrial field, is widely used in chemical industry, electric power, metallurgy, building material and many trades, and the electric power industry relies on it for boiler ventilation and air induction, guarantees the efficient operation of power generation process, and the metallurgical field uses its powerful wind to blast furnace blast, and helps metal smelting. And as the key part of connecting motor and fan impeller, the coupling plays a vital role in the power transmission process of the fan, and it must ensure that the power of the motor can be accurately and stably transmitted to the impeller, so that the fan can operate normally.

[0003] In the traditional centrifugal high pressure fan, the coupling is mostly rigid or semi-rigid structure, which can transmit power when connecting the motor and the impeller, but has obvious defects in installation and positioning. The rigid coupling requires high coaxiality of the motor shaft and the impeller shaft, and it is difficult to achieve the ideal coaxiality requirement in the actual installation process due to the influence of factors such as machining error and installation environment, which leads to complicated and time-consuming installation process. The motor position needs to be adjusted repeatedly during installation, and a large number of precision measuring tools are used. Even so, it is still difficult to completely avoid the additional stress caused by the deviation of coaxiality, which not only reduces the service life of the coupling, but also may cause problems such as fan vibration and noise increase, affecting the overall performance and stability of the fan. UTILITY MODEL CONTENTS

[0004] In order to make up for the above shortcomings, the utility model provides a centrifugal high pressure fan, which aims at improving the problem that the rigid coupling requires high coaxiality of the motor shaft and the impeller shaft, which makes it difficult to achieve the ideal coaxiality requirement in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: a centrifugal high pressure fan, comprising a base, a protection assembly is arranged on the upper surface of the base, a motor is fixedly connected to the upper surface of the base, an installation sleeve is slidably connected to the output end of the motor, and a positioning assembly is arranged at one end of the installation sleeve; the positioning assembly comprises a rotating block, one end of the rotating block away from the output end of the motor is fixedly connected to one end of the installation sleeve, a ball is fixedly connected to one end of the rotating block away from the installation sleeve, a connecting plate is rotatably connected to the outer wall of the ball, a spring one is fixedly connected inside the connecting plate, one end of the spring one is fixedly connected to an extrusion rod, the extrusion rod is rotatably connected inside the fixed rod, the fixed rod is fixedly connected to the fixed block at both ends, and the outer wall of the fixed block is fixedly connected to the outer wall of the rotating block.

[0006] Further, the protection assembly comprises a partition plate, the lower surface of the partition plate is fixedly connected to the upper surface of the base, and the outer wall of the connecting plate is rotationally connected to the inside of the partition plate.

[0007] Further, the upper surface of the base is fixedly connected with a support, the outer wall of the support is fixedly connected with a shell, the inside of the shell is slidably connected with a dustproof plate, the inner wall of the shell is slidably connected with a sliding block, the upper surface of the sliding block is fixedly connected with a second spring, the end, away from the sliding block, of the second spring is fixedly connected to the inner wall of the shell, the outer wall of the sliding block is fixedly connected with an extrusion block, the outer wall of the extrusion block is slidably connected with a fixed plate, and the outer wall of the fixed plate is fixedly connected to the outer wall of the dustproof plate.

[0008] Further, the outer wall of the fixed plate is slidably connected at the recess of the shell, the outer wall of the fixed plate is fixedly connected with a connecting block, and the outer wall of the connecting block is slidably connected at the recess of the shell.

[0009] Further, the inside of the shell is fixedly connected with a guide plate, and the inner wall of the shell is rotationally connected with a fan blade.

[0010] Further, the inside of the mounting sleeve is slidably connected with a connecting rod, and the end, away from the connecting plate, of the connecting rod is fixedly connected to one side of the fan blade.

[0011] Further, the outer wall of the connecting rod is rotationally connected to the inside of the shell.

[0012] Further, the inside of the motor is threadedly connected with a screw, and the outer wall of the screw is threadedly connected to the inside of the base.

[0013] The utility model has the advantages of the following:

[0014] 1、The utility model discloses a rotatable coupling is designed, which greatly reduces the strict requirement on coaxiality when the motor shaft and the impeller shaft are installed, in actual installation, the traditional rigid coupling cannot self-adaptively adjust the angle, needs to accurately adjust the motor position to guarantee the coaxiality, often consumes a large amount of time and manpower, and needs to use a precision measuring tool, but the rotatable coupling allows angle adjustment within a certain range, the installer only needs to preliminarily connect, and through the rotation characteristic, quick and accurate positioning can be realized, without repeatedly performing the tedious coaxiality adjustment process, the installation time is significantly shortened, and the installation efficiency is improved.

[0015] 2、 The utility model discloses, through pressing fixed plate lets it slide to the inside of shell, through the extrusion of fixed plate lets extrusion block deformation, when extrusion block and the recess of fixed plate coincide, and extrusion block will be fixed in the recess and realize the fixing of dustproof board, and this provides reliable dustproof barrier for the inside of fan, during the operation of fan, dust and other impurities in external environment are easily sucked into fan, if enters the key component such as motor, can be accumulated in motor winding, bearing and other parts, influence motor heat dissipation and normal operation, reduce motor insulation performance, even cause short circuit and other faults, the setting of dustproof board can effectively block dust and enter, ensure the inside of fan clean, maintain the normal working environment of motor and other components, prolong the maintenance cycle of equipment, when the dust accumulated on dustproof board reaches a certain amount, just need to dismount dustproof board, can carry out separate cleaning or replacement, simple and quick operation, do not need to carry out large-scale disassembly to the overall structure of fan, greatly reduce the maintenance workload and difficulty, shorten the equipment downtime maintenance time. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the three-dimensional structure schematic diagram of centrifugal high pressure fan that the utility model provides;

[0017] Figure 2 It is the base part structure schematic diagram of centrifugal high pressure fan that the utility model provides;

[0018] Figure 3 It is the shell part structure schematic diagram of centrifugal high pressure fan that the utility model provides;

[0019] Figure 4 It is the enlarged view of A in Figure 2

[0020] Figure 5 It is the enlarged view of B in Figure 2

[0021] Legend:

[0022] 1, base;2, shell;3, partition;4, motor;5, screw;6, support;7, mounting sleeve;8, connecting plate;9, fixed block;10, spring one;11, extrusion rod;12, fixed rod;13, ball;14, rotary block;15, dustproof board;16, spring two;17, sliding block;18, fixed plate;19, extrusion block;20, connecting block;21, connecting rod;22, fan blade;23, guide plate. DETAILED DESCRIPTION

[0023] ​​With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0024] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application. Figure 1 Figure 4 The present application provides an embodiment: a centrifugal high-pressure fan, comprising a base 1, the base 1 provides a stable support foundation for the whole fan, a protection assembly is arranged on the upper surface of the base 1, the protection assembly plays a protective role on the shaft coupling, at the same time, the upper surface of the base 1 is fixedly connected with a motor 4, the motor 4 is the power source of the fan, a screw 5 is threadedly connected in the motor 4, and the outer wall of the screw 5 is threadedly connected in the base 1; this connection mode enables the motor 4 to be firmly installed on the base 1, guarantees the stability of the motor 4 in the running process, prevents the overall performance of the fan from being affected due to the shaking of the motor 4, and the output end of the motor 4 is slidably connected with a mounting sleeve 7, one end of the mounting sleeve 7 is provided with a positioning assembly, the positioning assembly is used for realizing the accurate connection of the mounting sleeve 7 and other components, and ensures the accuracy of power transmission; the positioning assembly comprises a rotating block 14, one end of the rotating block 14 away from the output end of the motor 4 is fixedly connected with one end of the mounting sleeve 7, so that the mounting sleeve 7 can move along with the movement of the rotating block 14, a ball 13 is fixedly connected with one end of the mounting sleeve 7 away from the rotating block 14, and the outer wall of the ball 13 is rotatably connected with a connecting plate 8; this rotatable connection mode enables the ball 13 to rotate flexibly in the connecting plate 8, so as to drive the rotating block 14 and the mounting sleeve 7 to rotate, and then the mounting sleeve 7 can be adjusted in angle according to actual conditions during installation, the connection and positioning of other components are facilitated, the requirement for the coaxiality of the motor shaft and the impeller shaft is reduced, a spring 10 is fixedly connected in the connecting plate 8, one end of the spring 10 is fixedly connected with an extrusion rod 11, the spring 10 provides elastic force for the extrusion rod 11, a fixed rod 12 is rotatably connected in the extrusion rod 11, both ends of the fixed rod 12 are fixedly connected with fixed blocks 9, the outer wall of the fixed blocks 9 is fixedly connected with the outer wall of the rotating block 14, the fixed rod 12 and the fixed blocks 9 play a role in stabilizing the position of the extrusion rod 11, at the same time, the extrusion rod 11 can be relatively stable within a certain range when the rotating block 14 rotates, the reliability of the connection is ensured, the lower surface of a partition plate 3 in the protection assembly is fixedly connected with the upper surface of the base 1, the outer wall of the connecting plate 8 is rotatably connected in the partition plate 3, and the partition plate 3 provides support and protection for the connecting plate 8, so as to prevent external factors from damaging the shaft coupling.

[0025] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application. Figure 1 Figure 2 Figure 3 Figure 5 ​​​​The upper surface of the base 1 is fixedly connected with a support 6, the support 6 is used for supporting the shell 2, the shell 2 is kept in a proper position, the outer wall of the support 6 is fixedly connected with the shell 2, the shell 2 plays a protective and containing role on the internal components of the fan, the inside of the shell 2 is slidably connected with a dustproof plate 15, the dustproof plate 15 can effectively block the dust from the outside into the fan, the inner wall of the shell 2 is slidably connected with a sliding block 17, the upper surface of the sliding block 17 is fixedly connected with a spring 16, the end, away from the sliding block 17, of the spring 16 is fixedly connected to the inner wall of the shell 2, the spring 16 provides elastic force for the sliding block 17, the outer wall of the sliding block 17 is fixedly connected with an extrusion block 19, the outer wall of the extrusion block 19 is slidably connected with a fixed plate 18, the outer wall of the fixed plate 18 is fixedly connected to the outer wall of the dustproof plate 15, when it is needed to install or dismount the dustproof plate 15, the fixed plate 18 is pressed, the sliding of the fixed plate 18 will extrude the extrusion block 19, so that the extrusion block 19 is deformed, when the extrusion block 19 coincides with the groove of the fixed plate 18, the extrusion block 19 is clamped in the groove to realize the fixation of the dustproof plate 15, this structure is convenient for the installation and dismounting of the dustproof plate 15, is convenient for the cleaning or replacement of the dustproof plate 15, effectively maintains the cleanliness of the inside of the fan, the outer wall of the fixed plate 18 is slidably connected to the groove of the shell 2, the outer wall of the fixed plate 18 is fixedly connected with a connecting block 20, the outer wall of the connecting block 20 is slidably connected to the groove of the shell 2, the sliding connection of the connecting block 20 and the fixed plate 18 with the shell 2 further guarantees the stability and convenience of the installation of the dustproof plate 15, the inside of the shell 2 is fixedly connected with a guide plate 23, the guide plate 23 plays a guiding role on the flow of gas, so that the gas can flow more smoothly in the inside of the fan, improves the working efficiency of the fan, the inner wall of the shell 2 is rotatably connected with a fan blade 22, the fan blade 22 rotates under the action of the airflow, can make the fan blade 22 inhale the air from the outside, guarantees that the temperature is kept in a reasonable range during the operation of the fan, the inside of the mounting sleeve 7 is slidably connected with a connecting rod 21, the end, away from the connecting plate 8, of the connecting rod 21 is fixedly connected to one side of the fan blade 22, the movement of the mounting sleeve 7 can drive the movement of the connecting rod 21, and then control the rotation of the fan blade 22, realize the function of inhaling of the fan, the outer wall of the connecting rod 21 is rotatably connected to the inside of the shell 2, this rotatable connection mode makes the connecting rod 21 can rotate flexibly when transmitting power, reduces the energy loss, improves the power transmission efficiency.

[0026] Working principle: motor 4 is firmly installed on the base 1 through the internal threaded connection screw 5, which ensures the stability of the motor during operation. When the motor 4 starts, its output end begins to rotate. Because the output end of the motor 4 is slidingly connected with the mounting sleeve 7, the rotational movement of the motor is transmitted to the mounting sleeve 7. The positioning assembly at one end of the mounting sleeve 7 plays a key role. The rotating block 14 is fixedly connected to the mounting sleeve 7, and the ball 13 at the other end rotates in the connecting plate 8, allowing the mounting sleeve 7 to rotate flexibly within a certain range. The spring 10 inside the connecting plate 8 provides a spring force for the extrusion rod 11. The extrusion rod 11 is fixed to the outer wall of the rotating block 14 through the internal rotating connection of the fixed rod 12 and the fixed blocks 9 at both ends of the fixed rod 12, keeping relative stability, ensuring the reliability of the connection when the rotating block 14 rotates. In this way, the power of the motor 4 is accurately transmitted through the mounting sleeve 7 and the positioning assembly, providing power for the subsequent operation of the fan. As the motor 4 drives the mounting sleeve 7 to rotate, the connecting rod 21 slidingly connected inside the mounting sleeve 7 moves accordingly. The connecting rod 21 is fixedly connected to one side of the fan blade 22 away from the connecting plate 8, thereby driving the fan blade 22 to rotate inside the outer shell 2. The rotation of the fan blade 22 creates a negative pressure inside the outer shell 2. Under the action of the pressure difference, external gas enters the fan through the dustproof plate 15 slidingly connected inside the outer shell 2. The dustproof plate 15 can effectively prevent dust from entering the interior of the fan, protecting key components such as the motor 4. After entering, the gas is driven by the high-speed rotation of the fan blade 22 to obtain centrifugal force, which is thrown from the edge of the fan blade 22 to the inner wall of the outer shell 2. The guide plate 23 fixedly connected inside the outer shell 2 plays a guiding role in the flow of gas, allowing it to flow more smoothly inside the fan, gradually moving towards the air outlet. In this process, the pressure of the gas increases, achieving pressurized delivery.

[0027] When the fan blade 22 rotates, it not only realizes the intake and pressurized delivery of gas, but also helps to ventilate and dissipate heat inside the fan. During the flow of air inside the fan, the heat generated by components such as the motor 4 is carried away, ensuring that the temperature of the fan remains within a reasonable range during operation. The lower surface of the partition plate 3 in the protection assembly is fixedly connected to the upper surface of the base 1, and the outer wall of the connecting plate 8 is rotatably connected to the inside of the partition plate 3. The partition plate 3 provides support and protection for components such as the connecting plate 8, preventing external debris from damaging internal components of the fan and helping to maintain the integrity of the internal structure of the fan. The support 6 fixedly connected to the upper surface of the base 1 supports the outer shell 2, making the entire fan structure stable and ensuring normal operation of the fan. When maintenance of the dustproof plate 15 is required, press the fixed plate 18. The sliding of the fixed plate 18 will extrude the extrusion block 19 fixedly connected to the outer wall of the sliding block 17, causing the extrusion block 19 to deform. When the extrusion block 19 coincides with the groove of the fixed plate 18, the extrusion block 19 is clamped in the groove to fix or release the dustproof plate 15, facilitating the installation and removal of the dustproof plate 15 for cleaning or replacement, maintaining the cleanliness of the fan interior and ensuring the long-term stable operation of the fan.

[0028] It should be pointed out finally that: the above only for the preferred embodiments of the utility model have, and do not for limiting the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. that is made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A centrifugal high pressure fan comprising a base (1), characterized in that: The upper surface of the base (1) is provided with a protection assembly, the upper surface of the base (1) is fixedly connected with a motor (4), the output end of the motor (4) is slidably connected with a mounting sleeve (7), one end of the mounting sleeve (7) is provided with a positioning assembly; The positioning assembly comprises a rotating block (14), one end of the rotating block (14) away from the output end of the motor (4) is fixedly connected to one end of the mounting sleeve (7), the rotating block (14) is fixedly connected with a ball (13) away from one end of the mounting sleeve (7), the outer wall of the ball (13) is rotatably connected with a connecting plate (8), the connecting plate (8) is fixedly connected with a spring (10) in the inside, one end of the spring (10) is fixedly connected with a pressing rod (11), the pressing rod (11) is rotatably connected with a fixed rod (12) in the inside, both ends of the fixed rod (12) are fixedly connected with a fixed block (9), and the outer wall of the fixed block (9) is fixedly connected to the outer wall of the rotating block (14).

2. The centrifugal high pressure fan according to claim 1, characterized in that: The protection assembly comprises a partition plate (3), the lower surface of the partition plate (3) is fixedly connected to the upper surface of the base (1), and the outer wall of the connecting plate (8) is rotatably connected to the inside of the partition plate (3).

3. The centrifugal high pressure fan according to claim 1, characterized in that: The upper surface of the base (1) is fixedly connected with a support (6), the outer wall of the support (6) is fixedly connected with a shell (2), the inside of the shell (2) is slidably connected with a dustproof plate (15), the inner wall of the shell (2) is slidably connected with a sliding block (17), the upper surface of the sliding block (17) is fixedly connected with a spring (16), one end of the spring (16) away from the sliding block (17) is fixedly connected to the inner wall of the shell (2), the outer wall of the sliding block (17) is fixedly connected with a pressing block (19), the outer wall of the pressing block (19) is slidably connected with a fixed plate (18), and the outer wall of the fixed plate (18) is fixedly connected to the outer wall of the dustproof plate (15).

4. The centrifugal high pressure fan according to claim 3, characterized in that: The outer wall of the fixed plate (18) is slidably connected at the groove of the shell (2), the outer wall of the fixed plate (18) is fixedly connected with a connecting block (20), and the outer wall of the connecting block (20) is slidably connected at the groove of the shell (2).

5. The centrifugal high pressure fan according to claim 3, characterized in that: The inside of the shell (2) is fixedly connected with a guide plate (23), and the inner wall of the shell (2) is rotatably connected with a fan blade (22).

6. The centrifugal high pressure fan according to claim 5, characterized in that: The inside of the mounting sleeve (7) is slidably connected with a connecting rod (21), and one end of the connecting rod (21) away from the connecting plate (8) is fixedly connected to one side of the fan blade (22).

7. The centrifugal high pressure fan according to claim 6, characterized in that: The outer wall of the connecting rod (21) is rotatably connected to the inside of the shell (2).

8. The centrifugal high pressure fan of claim 1, wherein: The inside of the motor (4) is threadedly connected with a screw (5), and the outer wall of the screw (5) is threadedly connected to the inside of the base (1).

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