Axial-flow type stirrer with blades capable of stretching out and drawing back automatically
By introducing slidable sliding blades and compression springs into the agitator, the blades can be automatically expanded and contracted by different speeds of the motor, solving the problem of excessive power during high-solid content stirring start-up, and improving the stirring efficiency and starting convenience.
Patent Information
- Application Number
- CN202323490313.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2033-12-20
AI Technical Summary
The power of the existing stirrer is too high when starting in a high solids content deposition system, and the blade power drops after normal operation, so it cannot effectively deal with the variable power demand during stirrer start.
An automatic telescopic blade axial flow agitator is designed. By setting slidable sliding blades and compression springs, the centrifugal force difference during low-speed and high-speed operation of the motor is used to realize automatic telescopicity of the sliding blades to adapt to different solid content rates. The stirring is started.
Under high solids content, the sliding blades automatically shrink at low speed, reducing the initial starting power, ensuring smooth start; stretching during high-speed operation, increasing the blade area, meeting normal stirring needs, and automatically shrinking after shutdown, reducing the power To improve stirring efficiency.
Smart Images
Figure CN222239679U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of stirrers, and more specifically to an axial flow stirrer with automatically retractable blades. Background Art
[0002] The suspension operation of solid particles in the liquid phase is a very common type of stirring operation, which is widely used in industrial processes such as chemical industry, metallurgy, food and pharmaceutical industry. CN114832669A discloses an S-shaped stirring paddle for improving the solid-liquid suspension effect, which includes a stirring blade and a stirring shaft. The stirring blade is a curved surface, the lower half of the stirring blade is in a downward bending state, and the upper part is in an upward bending state, which is mainly used for downward stirring. Compared with the traditional folding blade stirring paddle, the stirring paddle can produce a better suspension effect of the solid-liquid system under the same blade volume and the same stirring power, and the structure is simple and easy to use. This device can reduce the stirring power consumption to a certain extent, but because the structure is fixed, the operating power is constant. For high solid content applications, the power is too large when the stirring is started, and the blade power decreases after normal operation. Therefore, it is necessary to reduce the power consumption at startup to facilitate the smooth startup of the blade. The device cannot cope with the demand for variable power when the stirring paddle is started.
[0003] Therefore, how to solve the stirring start-up problem of a high solid content deposition system is an urgent problem to be solved by those skilled in the art. Utility Model Content
[0004] In view of this, the purpose of the utility model is to provide an axial flow agitator with automatically retractable blades, which can adapt to the stirring start-up under different solid contents by setting slidable sliding blades, thereby meeting the stirring start-up requirements of a high solid content system.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] An axial flow agitator with automatically retractable blades, comprising:
[0007] A motor having a rotating shaft for outputting power;
[0008] A shaft sleeve, sleeved on the circumference of the rotating shaft;
[0009] The fixed blade is arranged in the circumferential direction of the shaft sleeve, a detachable limit block is arranged on the side of the end of the fixed blade close to the shaft sleeve, and a guide rail extending along the length direction of the fixed blade is arranged on the side of the end of the fixed blade away from the shaft sleeve, and the limit block and the guide rail are arranged on the same side of the fixed blade;
[0010] The sliding blade is connected to the fixed blade through a compression spring, and the sliding blade is slidably arranged along the guide rail.
[0011] Preferably, a first mounting groove is provided on the guide rail, the first mounting groove is provided at one end close to the shaft sleeve, the first mounting groove extends along the length direction of the guide rail, and is used for installing the compression spring.
[0012] Preferably, a guide rail block cooperating with the guide rail is provided on the side of the sliding blade, and the guide rail block extends along the length direction of the sliding blade. Through the cooperation between the guide rail block and the guide rail, the sliding blade can slide linearly along the guide rail.
[0013] Preferably, projections are provided on both sides of the end of the sliding blade close to the shaft sleeve, the projections and the sliding blade are in the same plane, and the projections are arranged in cooperation with the guide rail.
[0014] Preferably, a second mounting groove is provided on the protrusion, the second mounting groove is provided at an end away from the sleeve, the second mounting groove is provided corresponding to the first mounting groove, and the second mounting groove is used to install the compression spring.
[0015] Preferably, the first mounting groove and the second mounting groove are used to install a compression spring to connect the fixed blade and the sliding blade.
[0016] Preferably, the limiting block is provided with at least two through holes, and the at least two through holes cooperate with screws to fix the limiting block to the fixed blade.
[0017] Preferably, a plurality of fixed blades and a plurality of sliding blades are provided, and the plurality of fixed blades and the plurality of sliding blades are connected in a one-to-one correspondence.
[0018] The utility model provides an axial-flow agitator with automatically retractable blades, comprising a motor, a sleeve, a fixed blade, a sliding blade, a limit block and a compression spring. Specifically, the motor has a rotating shaft for outputting power, the sleeve is sleeved on the circumference of the rotating shaft, the rotating shaft is driven to rotate by the motor, the fixed blade is arranged on the circumference of the sleeve, the rotation of the fixed blade is driven by the rotation of the sleeve, a detachable limit block is provided on the end side of the fixed blade close to the sleeve, a guide rail extending along the length direction of the fixed blade is provided on the end side of the fixed blade away from the sleeve, the limit block and the guide rail are provided on the same side of the fixed blade, the sliding blade is connected to the fixed blade by the compression spring, the automatic extension and retraction of the sliding blade is achieved by the compression spring, so that the sliding blade is slidably arranged along the guide rail, the limit block is provided to limit the sliding distance of the sliding blade, so that the compression spring has a certain preload force in the initial state.
[0019] In the axial flow agitator with automatically retractable blades arranged in the above manner, in the initial state, the compression spring has a certain preload force, and the preload force of the compression spring pushes the sliding blade against the limit block. When the rotating shaft runs at a low speed, the centrifugal force of the sliding blade does not exceed the preload force of the compression spring, and the sliding blade cannot be extended and unfolded to meet the stirring start-up requirements of a high solid content system; when the rotating shaft runs at a high speed, the centrifugal force of the sliding blade exceeds the preload force of the compression spring, and the compression spring is compressed to drive the sliding blade to slide linearly in the guide rail of the fixed blade to extend the sliding blade. When the compression amount of the compression spring reaches the limit, the compression force of the compression spring is balanced with the centrifugal force, and the sliding blade no longer extends to ensure normal operation. After the stirring stops, the sliding blade automatically contracts under the drive of the restoring force of the compression spring. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] 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 in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.
[0021] Figure 1 A schematic diagram of the structure of the axial flow agitator with automatically retractable blades provided by the utility model;
[0022] Figure 2 A schematic diagram of the structure of the guide rail provided by the utility model;
[0023] Figure 3 A schematic diagram of the structure of the sliding blade provided by the utility model;
[0024] Figure 4 A side view of the sliding blade provided by the utility model;
[0025] Figure 5 This is a schematic diagram of the structure of the axial flow agitator with automatically retractable blades provided by the utility model in the initial state;
[0026] Figure 6 This is a schematic structural diagram of the axial flow agitator with automatically retractable blades provided by the utility model in an extended state.
[0027] Figure 1-Figure 6 , the reference numerals include:
[0028] 1- bushing;
[0029] 2-fixed blades;
[0030] 3-limiting block;
[0031] 4-guide rail, 41-first mounting slot;
[0032] 5-sliding blade, 51-protrusion, 511-second mounting groove;
[0033] 6-Compression spring;
[0034] 7- Screws. DETAILED DESCRIPTION
[0035] 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.
[0036] The core of the utility model is to provide an axial flow agitator with automatically retractable blades, which can adapt to the stirring start-up under different solid contents by arranging slidable sliding blades 5, thereby meeting the stirring start-up requirements of a high solid content system.
[0037] Please refer to Figure 1 An axial flow agitator with automatically retractable blades includes a motor, a shaft sleeve 1, a fixed blade 2, a limit block 3, a guide rail 4, a sliding blade 5 and a compression spring 6.
[0038] Specifically, the motor has a rotating shaft for outputting power, and the sleeve 1 is sleeved on the circumference of the rotating shaft. The motor drives the rotating shaft to rotate, thereby driving the sleeve 1 to rotate. The fixed blade 2 is arranged on the circumference of the sleeve 1, and the rotation of the sleeve 1 drives the fixed blade 2 to rotate. A detachable limit block 3 is provided on the side of the end of the fixed blade 2 close to the sleeve 1, and a guide rail 4 extending along the length direction of the fixed blade 2 is provided on the side of the end of the fixed blade 2 away from the sleeve 1. The limit block 3 and the guide rail 4 are arranged on the same side of the fixed blade 2. The sliding blade 5 is connected to the fixed blade 2 through a compression spring 6, and the compression spring 6 is used to realize automatic extension and retraction of the sliding blade 5, so that the sliding blade 5 is slidably set along the guide rail 4. The limit block 3 is set to limit the sliding distance of the sliding blade 5, so that the compression spring 6 has a certain preload force in the initial state.
[0039] It should be noted that two or more groups of compression springs 6 may be provided, and there is no limitation thereto. The compression springs 6 are used to balance the centrifugal force of the sliding blades 5 .
[0040] In the axial-flow agitator with automatically retractable blades arranged in the above manner, in the initial state, the compression spring 6 has a certain preload force, and the preload force of the compression spring 6 pushes the sliding blade against the limit block 3. When the rotating shaft runs at a low speed, the centrifugal force of the sliding blade 5 does not exceed the preload force of the compression spring 6, and the sliding blade 5 cannot be extended and unfolded to meet the stirring start-up requirements of the high solid content system; when the rotating shaft runs at a high speed, the centrifugal force of the sliding blade 5 exceeds the preload force of the compression spring 6, and the compression spring 6 is compressed to drive the sliding blade 5 to slide linearly in the guide rail 4 of the fixed blade 2 to extend the sliding blade 5. When the compression amount of the compression spring 6 reaches the limit, the compression force of the compression spring 6 is balanced with the centrifugal force, and the sliding blade 5 no longer extends to ensure normal operation. After the stirring stops, the sliding blade 5 automatically contracts under the drive of the restoring force of the compression spring 6.
[0041] Please refer to Figure 2 A first mounting groove 41 is provided on the guide rail 4 . The first mounting groove 41 is provided at one end close to the shaft sleeve 1 . The first mounting groove 41 extends along the length direction of the guide rail 4 and is used for installing the compression spring 6 .
[0042] It should be noted that, by providing the first mounting groove 41 on the guide rail 4 to connect the compression spring 6 , one end of the compression spring 6 is disposed in the first mounting groove 41 .
[0043] The first mounting groove 41 is extended along the length direction of the fixed blade 2 .
[0044] In the above situation, a guide rail block cooperating with the guide rail 4 is provided on the side of the sliding vane 5 , and the guide rail block extends along the length direction of the sliding vane 5 . Through the cooperation between the guide rail block and the guide rail 4 , the sliding vane 5 can slide linearly along the guide rail 4 .
[0045] It can be understood that the guide rail block is arranged in cooperation with the guide rail 4 so that the sliding blade 5 can slide smoothly and linearly in the guide rail 4 .
[0046] Please refer to Figure 3 , protrusions 51 are provided on both sides of the end of the sliding blade 5 close to the shaft sleeve 1 , the protrusions 51 and the sliding blade 5 are in the same plane, and the protrusions 51 are arranged in cooperation with the guide rail 4 .
[0047] It should be noted that a protrusion 51 is provided on the sliding vane 5 , and the protrusion 51 cooperates with the guide rail 4 to prevent the sliding vane 5 from slipping off the guide rail 4 , thereby playing the role of clamping the sliding vane 5 .
[0048] Please refer to Figure 4 A second mounting groove 511 is provided on the protrusion 51 . The second mounting groove 511 is provided at an end away from the sleeve 1 . The second mounting groove 511 is provided corresponding to the first mounting groove 41 . The second mounting groove 511 is used for installing the compression spring 6 .
[0049] It can be understood that by setting the second mounting groove 511 on the protrusion 51 to connect the compression spring 6, the other end of the compression spring 6 is set in the second mounting groove 511, and the position of the compression spring 6 is fixed by the cooperation between the first mounting groove 41 and the second mounting groove 511.
[0050] Furthermore, by installing a compression spring 6 in the first mounting groove 41 and the second mounting groove 511 to connect the fixed blade 2 and the sliding blade 5, the sliding blade 5 can slide linearly along the guide rail 4 through the preload force and elastic restoring force of the compression spring 6 itself, so that the sliding blade 5 can extend or retract linearly according to the output force of the motor.
[0051] The second mounting groove 511 is extended along the length direction of the sliding blade 5 .
[0052] In the present embodiment, the automatic extension and retraction of the sliding blade 5 is achieved by compressing the spring 6 . However, in real life, there is no limitation on the automatic extension and retraction method of the sliding blade 5 , as long as the above-mentioned technical effect can be achieved.
[0053] In the above embodiment, at least two through holes are provided on the limiting block 3 , and the at least two through holes cooperate with the screws 7 to fix the limiting block 3 to the fixed blade 2 .
[0054] It can be understood that by installing the limit block 3 on the fixed blade 2, the initial state of the sliding blade 5 is restricted. The compression spring 6 has a certain pre-tightening force in the initial state, so that the sliding blade 5 is subjected to a force pressing in the direction of the sleeve 1 in the initial state. The setting of the limit block 3 can prevent the sliding blade 5 from continuing to slide in the direction of the sleeve 1 under the pre-tightening force of the compression spring 6, thereby colliding with the sleeve 1, and can also prevent the sliding blade 5 from colliding with the sleeve 1 when retracting, thereby damaging the sliding blade 5 and the sleeve 1.
[0055] Furthermore, the length of the sliding blade 5 is smaller than that of the fixed blade 2, but the sliding blade 5 can be replaced in a variety of lengths to adapt to different solid contents. The sliding blade 5 can be quickly disassembled and replaced by disassembling the limit block 3 to achieve variable diameter operation, thereby enhancing the applicability of the agitator and increasing maintenance convenience.
[0056] Among them, in this embodiment, the limit block 3 is detachably fixed to the fixed blade 2 through the cooperation of the through hole and the screw 7, but in actual life, there is no restriction on the connection method between the limit block 3 and the fixed blade 2, and there is no restriction on the number, shape and size of the through holes on the limit block 3, as long as the above-mentioned technical effect can be achieved.
[0057] As a preferred embodiment, a plurality of fixed blades 2 and a plurality of sliding blades 5 are provided, and the plurality of fixed blades 2 and the plurality of sliding blades 5 are connected in a one-to-one correspondence.
[0058] It should be noted that the number of the fixed blades 2 and the sliding blades 5 corresponds to each other, and can be 3, 4 or even 6, without limitation, as long as the above technical effect can be achieved. Usually, the fixed blades 2 are uniformly welded on the circumference of the sleeve 1.
[0059] In summary, the axial flow agitator with automatically retractable blades provided by the utility model is initially Figure 5 As shown, the compression spring 6 has a certain preload force, so that the sliding blade 5 is pressed against the limit block 3. When the fixed blade 2 runs at a low speed of 100-200rpm, the centrifugal force of the sliding blade 5 does not exceed the preload force of the compression spring 6, and the sliding blade 5 cannot be extended and expanded, and maintains the initial diameter, which meets the stirring start of the high solid content system. After the solid-liquid suspension is started, when the fixed blade 2 runs at a working speed of more than 300rpm, the centrifugal force of the sliding blade 5 exceeds the preload force of the compression spring 6, and the sliding blade 5 slides linearly in the guide rail 4 of the fixed blade 2, and the sliding blade 5 extends and expands, and the total blade diameter increases, which meets the normal stirring operation. Figure 6 As shown, the compression spring 6 is compressed. When the compression amount of the compression spring 6 reaches the limit value, the compression force is balanced with the centrifugal force, and the sliding blade 5 no longer extends. After the motor stops, the compression force of the compression spring 6 is restored to drive the sliding blade 5 to automatically shrink, maintain the initial diameter, and ensure normal start next time. The sliding blade 5 does not expand at low speed, the fixed blade 2 has a small area and low torque, and the fixed blade 2 can be started. When the solid particles are suspended, the speed increases to the working speed for normal operation, and the sliding blade 5 expands, thereby solving the problem of starting the high solid content system.
[0060] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.
[0061] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.
[0062] The above is a detailed introduction to an axial flow agitator with automatically retractable blades provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the method and core idea of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.
Claims
1. An axial flow agitator with automatically retractable blades, characterized in that: include: A motor having a rotating shaft for outputting power; A shaft sleeve (1) is sleeved on the circumference of the rotating shaft; A fixed blade (2) is arranged in the circumferential direction of the shaft sleeve (1); a detachable stop block (3) is arranged on the side surface of the end of the fixed blade (2) close to the shaft sleeve (1); a guide rail (4) extending along the length direction of the fixed blade (2) is arranged on the side surface of the end of the fixed blade (2) away from the shaft sleeve (1); the stop block (3) and the guide rail (4) are arranged on the same side surface of the fixed blade (2); The sliding blade (5) is connected to the fixed blade (2) via a compression spring (6), and the sliding blade (5) is slidably arranged along the guide rail (4).
2. The axial flow agitator with automatically retractable blades according to claim 1, characterized in that: The guide rail (4) is provided with a first mounting groove (41), the first mounting groove (41) being provided at one end close to the shaft sleeve (1), the first mounting groove (41) extending along the length direction of the guide rail (4), and being used for mounting the compression spring (6).
3. The axial flow agitator with automatically retractable blades according to claim 2, characterized in that: A guide rail block cooperating with the guide rail (4) is provided on the side of the sliding blade (5); the guide rail block extends along the length direction of the sliding blade (5); and the guide rail block cooperates with the guide rail (4) so that the sliding blade (5) can slide linearly along the guide rail (4).
4. The axial flow agitator with automatically retractable blades according to claim 3, characterized in that: The sliding blade (5) is provided with protrusions (51) on both sides of the end portion close to the shaft sleeve (1); the protrusions (51) and the sliding blade (5) are located in the same plane; the protrusions (51) are arranged in coordination with the guide rail (4).
5. The axial flow agitator with automatically retractable blades according to claim 4, characterized in that: The protrusion (51) is provided with a second mounting groove (511), the second mounting groove (511) is arranged at an end away from the shaft sleeve (1), the second mounting groove (511) is arranged corresponding to the first mounting groove (41), and the second mounting groove (511) is used to install the compression spring (6).
6. The axial flow agitator with automatically retractable blades according to claim 5, characterized in that: The limiting block (3) is provided with at least two through holes, and at least two of the through holes cooperate with screws (7) to fix the limiting block (3) to the fixed blade (2).
7. The axial flow agitator with automatically retractable blades according to any one of claims 1 to 6, characterized in that: The fixed blades (2) and the sliding blades (5) are each provided in plurality, and the plurality of fixed blades (2) and the plurality of sliding blades (5) are connected in a one-to-one correspondence.