Screw centrifugal pump impeller balance detection device

Abstract

The utility model relates to a screw centrifugal pump impeller balance detection device, which belongs to the technical field of screw centrifugal pump detection, and comprises a base, a fixed plate is fixed on one side of the top of the base, a servo motor is mounted on one side of the fixed plate, and the servo motor is connected with the base. By means of the structural design of the installation bin and the fixing assembly, the spiral impeller can be fixedly installed, and by means of the fixing mode of the structural design, operators only need to achieve one-time thread rotation work in the later period, the fixing steps are effectively reduced, the fixing efficiency and convenience in the later period are improved, and the practicability is high. Meanwhile, through the design of the mounting bin and the two sets of components above the mounting bin and the connection of the base, the stability of the spiral impeller in the later-stage detection rotation process can be guaranteed, and the detection of the spiral centrifugal pump impeller or the centrifugal pump impeller can be achieved, so that the later-stage application range of the detection device is expanded, and the later-stage use practicability of the detection device is improved.

Description

Technical Field

[0001] This utility model belongs to the field of spiral centrifugal pump testing technology, specifically relating to a spiral centrifugal pump impeller balance testing device. Background Technology

[0002] A spiral centrifugal pump is a type of pump that combines spiral propulsion and centrifugal action. It is mainly used for conveying solid-liquid two-phase fluids, high-viscosity liquids, and drainage applications. Its core component is a twisted spiral blade. These blades extend axially on a conical hub to form a spiral propulsion effect, while the impeller in the volute section generates a centrifugal effect. Compared to a centrifugal pump, it has the characteristics of low noise, low vibration, and the ability to convey liquids containing solid particles. However, the impeller of a spiral centrifugal pump needs to be tested after production. Therefore, it is necessary to design a spiral centrifugal pump impeller balance testing device.

[0003] For example, in Chinese utility model publication CN218882538U, entitled "Detection Device for Centrifugal Pump Impeller Assembly," a housing is included. Inside the housing are two fixed side plate assemblies, each consisting of two side plates. A drive wheel with a shaft is rotatably connected between the two side plates. A motor housing is fixed inside the housing, and the output shaft of the motor housing is fixedly connected to the drive wheel with a shaft. Two through holes are opened on the top of the housing, corresponding vertically to the drive wheel with a shaft. A second round shaft is rotatably connected within each through hole. A belt is fitted between the second round shaft and the outer side of the drive wheel with a belt. The housing is equipped with… The two testing mechanisms, with fixing mechanisms on both the left and right sides of the housing, offer the advantage of ensuring safety during the testing of centrifugal pump impeller assemblies. However, the fixing method for the centrifugal pump impeller assemblies in the prior art is cumbersome, requiring operators to perform multiple fixing steps to complete the limiting and fixing of the impeller assembly. Furthermore, the prior art requires simultaneous fixing and testing of both ends of the centrifugal pump impeller assembly during actual operation. This operating method is not suitable for testing impellers inside spiral centrifugal pumps, thus affecting the applicability of the testing device. Utility Model Content

[0004] The purpose of this invention is to provide a simple and reasonably designed spiral centrifugal pump impeller balance detection device to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A spiral centrifugal pump impeller balance detection device includes a base, a fixing plate fixed to one side of the top of the base, a servo motor mounted on one side of the fixing plate, and mounting chambers mounted on the output end of the servo motor and the other side of the top of the base. Fixing components are installed inside both sets of mounting chambers, and a spiral impeller is placed inside one set of fixing components. Detection components are installed on both sides of the top of the base near the two sets of mounting chambers, and the detection components are in contact with the spiral impeller.

[0007] As a further optimization of this utility model, the fixing component includes mounting sleeves installed on the side of two sets of mounting chambers that are close to each other, and the two sets of mounting sleeves extend into the interior of the mounting chambers. A spiral impeller is placed inside one set of mounting sleeves. Push rods are slidably provided through the top and bottom of the interior of the two sets of mounting sleeves. Arc-shaped fixing blocks are installed on the top of the two sets of push rods and the bottom of the other two sets of push rods. The two sets of arc-shaped fixing blocks on the same side cooperate with the spiral impeller. A spring connected to the arc-shaped fixing block and the mounting sleeve is sleeved on the top of the outer side of the two sets of push rods and the bottom of the outer side of the other two sets of push rods. A fixing screw is rotatably installed on the side of the two sets of mounting sleeves that is far apart from each other, and the side of the two sets of fixing screws that is far apart from each other is rotatably connected to the interior of the mounting chamber. A limiting sleeve is threadedly sleeved on the outside of the two sets of fixing screws, and the limiting sleeve is located outside the mounting sleeve and cooperates with the push rod.

[0008] As a further optimization of this utility model, the detection component includes two limiting sleeves installed on the top of the base near the two sets of mounting chambers. The inner top of each of the two sets of limiting sleeves is slidably fitted with a mounting rod extending to its outside. The inner bottom of each of the two sets of limiting sleeves is provided with a spring connected to the mounting rod. The top of each of the two sets of mounting rods is equipped with a detection sensor that fits against the outside of the spiral impeller, and the top of the detection sensor is equipped with a roller that fits against the outside of the spiral impeller.

[0009] As a further optimization of this utility model, limit rings are installed on the outer sides of the two sets of installation chambers that are close to each other, and the bottom of the outer side of the two sets of limit rings are slidably fitted with arc-shaped grooves that are fixed to the top of the base.

[0010] As a further optimization of this utility model, a guide groove is provided on the side of the top of the base away from the fixed plate, and a limiting slider is slidably provided inside the guide groove. The two sides of the top of the limiting slider are respectively fixedly connected to a set of arc-shaped grooves and the bottom of another set of detection components.

[0011] As a further optimization of this utility model, each of the two sets of installation chambers has a through groove on one side that is far apart from the other, and the through groove is connected to the inside and outside of the installation chamber.

[0012] The beneficial effects of this utility model are as follows: Through the structural design of the installation chamber and fixing components, this utility model can realize the fixed installation of the spiral impeller. Moreover, through the fixing method of this structural design, the operator only needs to perform a single threaded rotation, effectively reducing the fixing steps and improving the efficiency and convenience of subsequent fixing. At the same time, through the connection between the two sets of designs of the installation chamber and the above components and the base, the stability of the spiral impeller during the subsequent testing and rotation process can be guaranteed. It can also realize the testing of spiral centrifugal pump impellers or centrifugal pump impellers, thereby expanding the application range of this testing device and increasing its practicality in later use. Attached Figure Description

[0013] Figure 1 This is a front sectional view of the present invention;

[0014] Figure 2 This is the front view of this utility model;

[0015] Figure 3 This is a three-dimensional sectional view of the fixing component of this utility model;

[0016] Figure 4 This is a utility model Figure 1 Enlarged view of point A in the middle;

[0017] Figure 5 This is a utility model Figure 1 Enlarged view of section B in the middle.

[0018] In the diagram: 1. Base; 2. Fixing plate; 3. Servo motor; 4. Mounting chamber; 5. Spiral impeller; 6. Fixing assembly; 600. Mounting sleeve; 601. Arc-shaped fixing block; 602. Spring one; 603. Push rod; 604. Limiting sleeve one; 605. Fixing screw; 7. Detection assembly; 700. Limiting sleeve two; 701. Spring two; 702. Detection sensor; 703. Mounting rod. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0020] Example 1

[0021] like Figure 1 , Figure 2As shown, a spiral centrifugal pump impeller balancing detection device includes a base 1, which facilitates the installation and placement of the impeller and related components. A fixing plate 2 is fixed to one side of the top of the base 1, allowing for the fixed installation of a servo motor 3. A guide groove is provided on the top side of the base 1 away from the fixing plate 2, and a limiting slider is slidably installed inside the guide groove. The cooperative design of the guide groove and the limiting slider facilitates the sliding displacement of another set of mounting chambers 4 and related components, enabling simultaneous fixing of both ends of centrifugal pump impeller assembly shafts of different lengths. The top two sides of the limiting slider are fixedly connected to a set of arc-shaped grooves and the bottom of another set of detection components 7, respectively, and the top of the limiting slider is fixed to the other set of mounting chambers 4 and related components. It can also be used to fix and install another set of detection components 7, so that the other set of detection components 7 can move with the other set of installation chambers 4 and above in the future. A servo motor 3 is installed on one side of the fixing plate 2. The output end of the servo motor 3 and the other side of the top of the base 1 are both equipped with installation chambers 4. Limiting rings are installed on the outer side of the two sets of installation chambers 4 that are close to each other. The bottom of the outer side of the two sets of limiting rings is slidably fitted with an arc-shaped slide groove that is fixed to the top of the base 1. Through the rotational connection design of the limiting rings and the arc-shaped slide groove, the stability of the installation and rotation of the installation chambers 4 and above in the later stage can be easily improved. Through slots are opened on the two ends of the two sets of installation chambers 4 that are far apart. The through slots are connected to the inside and outside of the installation chambers 4. The opening of the through slots makes it convenient for the operator to manually rotate the fixing screw 605 through the through slots in the later stage.

[0022] like Figure 3 , Figure 4As shown, both sets of mounting chambers 4 are equipped with fixing components 6. The fixing components 6 include mounting sleeves 600 installed on the adjacent side of the two sets of mounting chambers 4, and both sets of mounting sleeves 600 extend into the interior of the mounting chambers 4. A spiral impeller 5 is placed inside one set of mounting sleeves 600. The design of the mounting sleeves 600 facilitates the subsequent installation of components and allows for easy insertion and placement of the rotating shaft on one side of the spiral impeller 5. Push rods 603 are slidably inserted through the top and bottom of both sets of mounting sleeves 600. The top of push rod 603, away from the helical impeller 5, and the bottom of the other two sets of push rods 603, away from the helical impeller 5, are all provided with guide slopes. The tops of the two sets of push rods 603 and the bottoms of the other two sets of push rods 603 are all equipped with arc-shaped fixing blocks 601. Through the structural design of the arc-shaped fixing blocks 601, the rotating shaft on one side of the helical impeller 5 can be easily fixed and clamped. Furthermore, the two sets of arc-shaped fixing blocks 601 on the same side cooperate with the helical impeller 5. The tops of the outer sides of the two sets of push rods 603 and the bottoms of the outer sides of the other two sets of push rods 603 are all fitted with arc-shaped fixing blocks 601. The spring 602 connecting the fixed block 601 and the mounting sleeve 600 facilitates the automatic reset function of the arc-shaped fixed block 601, enabling the cyclic fixing operation of the spiral impeller 5 shaft. Each of the two sets of mounting sleeves 600 has a fixing screw 605 rotatably mounted on its far side, and the far side of the two sets of fixing screws 605 is rotatably connected to the interior of the mounting chamber 4. Each set of fixing screws 605 has a limiting sleeve 604 threaded onto its exterior, and the limiting sleeve 604 is positioned within... The outer side of the mounting sleeve 600 is fitted with the push rod 603. The inner sides of the two sets of limiting sleeves 604 are provided with frustum-shaped guide slopes. Through the fit design of the guide slope of the push rod 603 and the frustum-shaped guide slope on the inner side of the limiting sleeve 604, the push rod 603 can be pushed by the movement of the limiting sleeve 604 to drive the arc-shaped fixing block 601 to move closer inside the mounting sleeve 600, so as to facilitate the fixed clamping of the rotation of one side of the spiral impeller 5. The spiral impeller 5 is placed inside a set of fixing components 6.

[0023] like Figure 1 , Figure 2 , Figure 5As shown, detection components 7 are installed on both sides of the top of the base 1 near the two sets of mounting chambers 4, and the detection components 7 are in contact with the spiral impeller 5. The detection components 7 include limiting sleeves 700 installed on the top of the base 1 near the two sets of mounting chambers 4. The inner top of each of the two sets of limiting sleeves 700 is slidably fitted with a mounting rod 703 extending to its outside. The inner bottom of each of the two sets of limiting sleeves 700 is provided with a spring 701 connected to the mounting rod 703. Through the design and cooperation of the limiting sleeves 700 and the mounting rods 703, the lifting and lowering of the detection sensor 702 can be easily realized later. Then, the spring 701 can realize the limiting and restoration of the lifting and lowering of the detection sensor 702, so that the detection sensor 702 can always maintain contact with the spiral impeller 5, which is convenient. To improve the accuracy of subsequent inspections, both sets of mounting sleeves 703 are equipped with detection sensors 702 that fit against the outside of the spiral impeller 5. The tops of the detection sensors 702 are also equipped with rollers that fit against the outside of the spiral impeller 5. This roller installation design effectively reduces wear caused by the spiral impeller 5 during rotation maintenance, facilitating subsequent testing of the spiral impeller 5's balance performance. The mounting sleeves 703 can be used with piezoelectric or infrared sensors for detection. During high-speed rotation of the spiral impeller 5, uneven mass distribution leads to centrifugal force differences, generating vibrations and bearing pressures. These vibrations can be detected by the mounting sleeves 703 and converted into electrical signals. Finally, the control system analyzes and calculates the magnitude and location of the imbalance.

[0024] It should be noted that, in the use of this spiral centrifugal pump impeller balance testing device, the operator can first move the base 1 and above to the designated position and connect the power supply. Then, the spiral impeller 5 is inserted into the interior of a set of mounting sleeves 600, and the fixing screw 605 is rotated to push the limiting sleeve 604 to move outside. At this time, through the guide slope design of the limiting sleeve 604 and the push rod 603, the push rod 603 can be pushed by the guide slope during the movement of the limiting sleeve 604 to move closer to the arc-shaped fixing block 601 inside the mounting sleeve 600. The approach of the arc-shaped fixing block 601 can achieve the fixed connection of the spiral impeller 5. The movement of the arc-shaped fixing block 601 can also stretch the spring 602. When the fixing is released later, the reverse rotation of the fixing screw 605 can be used to move the limit sleeve 604 in the opposite direction, and then the resistance to the push rod 603 can be released. Finally, the elastic restoring force of the spring 602 can be used to reset the arc-shaped fixing block 601. After the spiral impeller 5 is fixedly installed, the rotation of the installation chamber 4 and above can be realized by the operation of the servo motor 3. Then, the rotation detection of the spiral impeller 5 can be realized by the fixing component 6 designed inside the installation chamber 4. The structural design of the fixing component 6 can improve the fixing efficiency of the spiral impeller 5 in the later stage.

[0025] Meanwhile, the fixed design of one set of mounting chamber 4 and above components and the sliding design of another set of mounting chamber 4 and above components also facilitate the simultaneous fixed testing of both ends of the centrifugal pump impeller assembly in the later stage, thereby improving the applicability, flexibility and practicality of the testing device in the later stage.

[0026] Furthermore, during the fixed installation process, the spiral impeller 5 can also be pushed by the spiral blades on the outside of the spiral impeller 5 to drive the detection sensor 702 to move the mounting sleeve 703 downward inside the limiting sleeve 700, thereby compressing the spring 701. At this time, the elastic restoring force of the spring 701 can always keep the detection sensor 702 in contact with the outside of the spiral impeller 5. Then, the vibration of the spiral impeller 5 during rotation detection can be directly detected by the detection sensor 702, thereby realizing the detection operation of the spiral impeller 5.

[0027] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A device for detecting the balance of a screw centrifugal pump impeller, comprising a base (1), characterized in that, A fixing plate (2) is fixed on one side of the top of the base (1). A servo motor (3) is installed on one side of the fixing plate (2). An installation chamber (4) is installed on the output end of the servo motor (3) and on the other side of the top of the base (1). A fixing component (6) is installed inside both sets of the installation chambers (4). A spiral impeller (5) is placed inside one set of the fixing component (6). Detection components (7) are installed on both sides of the top of the base (1) near the two sets of installation chambers (4), and the detection components (7) are in contact with the spiral impeller (5).

2. A spiral centrifugal pump impeller balance detection device according to claim 1, characterized in that: The fixing assembly (6) includes mounting sleeves (600) installed on the adjacent side of the two sets of mounting chambers (4), and the two sets of mounting sleeves (600) extend into the interior of the mounting chambers (4). A spiral impeller (5) is placed inside one set of mounting sleeves (600). Push rods (603) are slidably provided through the top and bottom of the interior of the two sets of mounting sleeves (600). Arc-shaped fixing blocks (601) are installed on the top of the two sets of push rods (603) and the bottom of the other two sets of push rods (603). The two sets of arc-shaped fixing blocks (601) on the same side cooperate with the spiral impeller (5). The two sets of push rods (603) 03) The top of the outer side and the bottom of the outer side of the other two sets of push rods (603) are all fitted with springs (602) that are connected to the arc-shaped fixing block (601) and the mounting sleeve (600). The two sets of mounting sleeves (600) are rotatably mounted with fixing screws (605) on the opposite side. The opposite side of the two sets of fixing screws (605) is rotatably connected to the inside of the mounting chamber (4). The two sets of fixing screws (605) are threaded with limiting sleeves (604) on the outside. The limiting sleeves (604) are fitted on the outside of the mounting sleeves (600) and cooperate with the push rod (603).

3. A balance detection device for a spiral centrifugal pump impeller according to claim 1, characterized in that: The detection component (7) includes two limiting sleeves (700) installed on the top of the base (1) near the two sets of mounting chambers (4). The inner top of each of the two sets of limiting sleeves (700) is slidably fitted with a mounting rod (703) extending to its outside. The inner bottom of each of the two sets of limiting sleeves (700) is provided with a spring (701) connected to the mounting rod (703). The top of each of the two sets of mounting rods (703) is fitted with a detection sensor (702) that fits against the outside of the spiral impeller (5). The top of the detection sensor (702) is fitted with a roller that fits against the outside of the spiral impeller (5).

4. A balance detection device for a spiral centrifugal pump impeller according to claim 1, characterized in that: Both sets of installation chambers (4) have limit rings installed on the side of their outer surfaces that are close to each other, and the bottom of the outer sides of both sets of limit rings are slidably fitted with arc-shaped grooves that are fixed to the top of the base (1).

5. A balance detection device for a spiral centrifugal pump impeller according to claim 3, characterized in that: The base (1) has a guide groove on the side away from the fixed plate (2) at the top, and a limiting slider is slidably provided inside the guide groove. The two sides of the top of the limiting slider are respectively fixedly connected to a set of arc-shaped grooves and the bottom of another set of detection components (7).

6. The spiral centrifugal pump impeller balance detection device according to claim 1, characterized in that: Both sets of installation chambers (4) have through slots on opposite sides, and the through slots are connected to the inside and outside of the installation chambers (4).

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