A centering device suitable for degasser rotors

Abstract

This utility model relates to a centering device suitable for a degasser rotor, including a fixed support assembly, a positioning rotation assembly, and a clamping support assembly. The fixed support assembly includes a mounting flange, which is mounted on the end face of the rotor by fixing bolts. The positioning rotation assembly includes a rotating disk and ball-head plungers. The rotating disk is located inside the mounting flange, and the ball-head plungers are evenly distributed on the side of the rotating disk. By turning the ball-head plungers, the rotating disk and the rotor are kept concentric. The clamping support assembly includes a jaw, a jaw sleeve, and a tension spring. The jaw sleeve is mounted on the rotating disk, and the jaw passes through the jaw sleeve and slides freely within the jaw sleeve. The two ends of the tension spring are respectively mounted on the front end of the jaw and on the mounting flange. Compared with the prior art, this utility model solves the problem of difficulty in coaxial welding of the degasser feed pipe, greatly reduces the time for subsequent debugging, and avoids secondary welding or adjustment due to welding deviation.

Description

[Technical Field]

[0001] This utility model relates to the field of pipeline welding alignment technology, specifically an alignment device suitable for degasser rotors. [Background Technology]

[0002] A vacuum degasser is a device that uses vacuum suction to remove non-condensable gases from a liquid. Utilizing Henry's Law, it creates a vacuum environment using a vacuum pump, reducing the pressure above the liquid and releasing free and dissolved gases. These gases are then discharged from the system via an automatic exhaust valve. Modern vacuum degassers are widely used in the food, chemical, pharmaceutical, electronics, and cosmetic industries.

[0003] Currently, mainstream degassing machines mainly consist of four major systems: a vacuum system, a degassing system, a material conveying system, and a control system. When fabricating and installing the material conveying system, it is usually necessary to weld the feed pipe on-site to determine its specific location. However, due to the lack of a certain alignment reference, the welded pipe cannot guarantee its coaxiality with the internal rotating device, increasing the difficulty of subsequent equipment installation and commissioning. Furthermore, because the welded pipe lacks a stable fixing device, it often undergoes partial deformation, resulting in a significant deviation from the ideal state, increasing processing time and operating costs. [Utility Model Content]

[0004] The purpose of this invention is to address the aforementioned shortcomings by providing an alignment device suitable for the rotor of a degasser. This solves the problem of difficulty in achieving coaxiality during the welding of the degasser feed pipe, greatly reduces the time required for subsequent debugging, and avoids secondary welding or adjustments due to welding deviations.

[0005] To achieve the above objectives, a centering device suitable for a degasser rotor is designed, comprising a fixed support assembly 1, a positioning rotation assembly 2, and a clamping support assembly 3. The fixed support assembly 1 includes a mounting flange 101, which is mounted on the end face of the rotor by fixing bolts 102. The positioning rotation assembly 2 includes a rotating disk 201 and ball plungers 202. The rotating disk 201 is located inside the mounting flange 101, and the ball plungers 202 are evenly distributed on the side of the rotating disk 201. By rotating the ball plungers 202, the rotating disk 201 is kept concentric with the rotor. The clamping support assembly 3 includes a jaw 301, a jaw sleeve 303, and a tension spring 307. The jaw sleeve 303 is mounted on the rotating disk 201, and the jaw 301 passes through the jaw sleeve 303 and slides freely within the jaw sleeve 303. The two ends of the tension spring 307 are respectively mounted on the front end of the jaw 301 and the mounting flange 101.

[0006] Furthermore, the ball-head plunger 202 is installed on the inner wall of the rotating disk 201 and is evenly arranged at a 120° angle. The ball head portion of the ball-head plunger 202 contacts the guide groove inside the mounting flange 101, thereby causing the rotating disk 201 to rotate around the axis along the guide groove.

[0007] Furthermore, the outer surface of the rotating disk 201 is fixed with an installation handle 203 by a fixing bolt 204. The installation handle 203 is used to facilitate the subsequent rotation operation of opening the gripper 301.

[0008] Furthermore, the end of the gripper 301 passes through the gripper sleeve 303 and is fixed to the mounting flange 101 by bearing bolts 302. The protruding cylindrical pin of the gripper sleeve 303 is mounted on the rotating disk 201, and the gripper 301 is opened and closed by rotating the rotating disk 201.

[0009] Furthermore, the middle section of the bearing bolt 302 is a smooth cylindrical pin, the bottom of the bearing bolt 302 is a cylindrical external thread, the middle section of the bearing bolt 302 is connected to the pin hole at the end of the clamp 301, and the external thread at the bottom of the bearing bolt 302 is installed in the corresponding hole of the mounting flange 101.

[0010] Furthermore, the two ends of the tension spring 307 are respectively installed on the front end of the gripper 301 and the corresponding position of the mounting flange 101 by mounting bolt 1 305 and mounting bolt 2 306. After installation, the tension spring 307 has a preload force. The contraction force of the tension spring 307 will retract the gripper 301 inward, thereby making the gripper 301 in a contracted state in its natural state.

[0011] Furthermore, one end of the tension spring 307 is fixed to the middle section of the gripper 301 by mounting bolt 2 306, and the other end of the tension spring 307 is fixed to the mounting flange 101 by mounting bolt 1 305 and spring mounting sleeve 304.

[0012] Compared with the prior art, this utility model has the following advantages:

[0013] (1) This utility model solves the problem of difficulty in coaxial welding of the feed pipe of the degasser, greatly reduces the time for later debugging, and avoids secondary welding or adjustment due to welding deviation;

[0014] (2) Since the opening angle of the clamps is adjustable, this utility model can be adapted to welded straight pipes of different sizes. And because of the tension spring, the clamping force will increase as the diameter of the straight pipe increases.

[0015] (3) The clamps of this utility model are inside the rotor, so they will not interfere with the welding pipeline during the welding operation, and can be continuously clamped until the pipeline cools down.

[0016] (4) This utility model has a centering function and can always maintain a clamped state during the cooling process after the welding of the conveying pipeline is completed, so as to control the welding deformation within an acceptable range and solve the objective processing and assembly problems of the degassing machines currently sold on the market. [Image Description]

[0017] Figure 1 This is an overall three-dimensional sectional view of the present invention (including the rotor);

[0018] Figure 2 This is a cross-sectional view of the working clamping and welding pipe of this utility model;

[0019] Figure 3a This utility model is an overall three-dimensional view Figure 1 (Excluding the rotor);

[0020] Figure 3b This utility model is an overall three-dimensional view Figure 2 (Excluding the rotor);

[0021] Figure 4a This is the overall front view of this utility model;

[0022] Figure 4b This is an overall rear view of the present invention;

[0023] Figure 5 This is an exploded view of the entire utility model;

[0024] Figure 6 This is an exploded view of the fixed support assembly of this utility model;

[0025] Figure 7 This is an exploded view of the positioning and rotating assembly of this utility model;

[0026] Figure 8 This is an exploded view of the clamping support assembly of this utility model;

[0027] In the diagram: 1. Fixed support assembly; 2. Positioning and rotating assembly; 3. Clamping support assembly; 101. Mounting flange; 102. Fixing bolt one; 103. Rotor assembly; 201. Rotating disk; 202. Ball plunger; 203. Mounting handle; 204. Fixing bolt two; 301. Clamping jaw; 302. Bearing bolt; 303. Clamping jaw sleeve; 304. Spring mounting sleeve; 305. Mounting bolt one; 306. Mounting bolt two; 307. Tension spring. [Detailed Implementation]

[0028] As attached Figure 1 To be continued Figure 8As shown, this utility model provides a centering device suitable for a degasser rotor, including a fixed support assembly 1, a positioning rotation assembly 2, and a clamping support assembly 3. The fixed support assembly 1 includes a mounting flange 101, which is mounted on the end face of the rotor by fixing bolts 102. The positioning rotation assembly 2 includes a rotating disk 201 and ball plungers 202. The rotating disk 201 is located inside the mounting flange 101, and the ball plungers 202 are evenly distributed on the side of the rotating disk 201. By turning the ball plungers 202, the rotating disk 201 is kept concentric with the rotor. The clamping support assembly 3 includes a jaw 301, a jaw sleeve 303, and a tension spring 307. The jaw sleeve 303 is mounted on the rotating disk 201, and the jaw 301 passes through the jaw sleeve 303 and slides freely within the jaw sleeve 303. The two ends of the tension spring 307 are respectively mounted on the front end of the jaw 301 and the mounting flange 101.

[0029] The outer surface of the rotating disk 201 is fixed with an installation handle 203 by a fixing bolt 204. The installation handle 203 is used to facilitate the subsequent rotation operation of the gripper 301. The ball plunger 202 is installed on the inner wall of the rotating disk 201 and is evenly arranged at a 120° angle. The ball head of the ball plunger 202 contacts the guide groove inside the mounting flange 101, thereby causing the rotating disk 201 to rotate around the axis along the guide groove.

[0030] The end of the gripper 301 passes through the gripper sleeve 303 and is fixed to the mounting flange 101 by the bearing bolt 302. The protruding cylindrical pin of the gripper sleeve 303 is installed on the rotating disk 201, and the gripper 301 is opened and closed by rotating the rotating disk 201. The middle section of the bearing bolt 302 is a smooth cylindrical pin, and the bottom of the bearing bolt 302 is a cylindrical external thread. The middle section of the bearing bolt 302 is connected to the pin hole at the end of the gripper 301, and the bottom external thread of the bearing bolt 302 is installed in the corresponding hole of the mounting flange 101.

[0031] The two ends of the tension spring 307 are respectively installed on the front end of the gripper 301 and the corresponding position of the mounting flange 101 by mounting bolt 1 305 and mounting bolt 2 306. After installation, the tension spring 307 has a preload force. The contraction force of the tension spring 307 will retract the gripper 301 inward, thereby making the gripper 301 in a retracted state in its natural state. Furthermore, one end of the tension spring 307 is fixed to the middle section of the gripper 301 by mounting bolt 2 306, and the other end of the tension spring 307 is fixed to the mounting flange 101 by mounting bolt 1 305 and spring mounting sleeve 304.

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0033] A centering and clamping mechanism suitable for a degasser rotor, comprising:

[0034] The fixed support assembly 1 includes a mounting flange and fixing bolts installed on the rotor end face. The mounting flange is installed on the rotor end face by the fixing bolts.

[0035] The positioning rotating assembly 2 includes a rotating disk, a mounting handle, a fixing bolt, and a ball-head plunger for adjusting the center. By turning the plunger, the rotating disk and the rotor are kept concentric.

[0036] The clamping support assembly 3 includes a clamp, a tension spring, a bearing bolt, a clamp sliding sleeve, a spring mounting sleeve, and mounting bolts;

[0037] The rotating disk and the gripper sleeve are installed through corresponding holes. Then the gripper is passed through the gripper sleeve so that the gripper can slide freely inside the sleeve.

[0038] The jaws are mounted to the mounting flange using fixing bolts. The middle section of these bolts is a smooth cylindrical pin with an external cylindrical thread at the bottom. The middle section of the bolt connects to the pin hole at the jaw's end, and the external thread at the bottom of the bolt is fitted into the corresponding hole on the mounting flange, ensuring the jaws can rotate around the central axis of the fixing bolt. Two tension springs are mounted to the front end of the jaws and corresponding positions on the mounting flange using mounting bolts. The tension springs have a preload, which pulls the three jaws inward, allowing the clamping mechanism to operate in a retracted state under its natural condition. Three ball-head plungers are mounted on the side of the rotating disk at a 120° angle. The ball heads contact the guide groove inside the mounting flange, causing the rotating disk to rotate around its axis along the guide groove. A mounting handle is fixed to the outer surface of the rotating disk using fixing bolts, facilitating subsequent rotational operation to open the jaws.

[0039] After the self-centering clamping fixture is installed, install the mechanism on the rotor assembly that needs to be centered. Manually rotate the rotor assembly and use a micrometer to measure the inner wall of the rotating disk. Then adjust the three ball-head plungers to align the self-centering clamping fixture and the rotor assembly with the same axis. Once the alignment is complete, manually rotate the handle of the clamping mechanism and insert the straight pipe to be welded into it. Release the handle, and the three internal jaws will automatically clamp the straight pipe to be welded. This ensures that the coaxiality of the straight pipe to be welded and the rotor meets the requirements.

[0040] The self-centering clamping method based on the above-mentioned structural device specifically includes the following steps:

[0041] Step S1: Install the self-centering clamping mechanism on the outer end face of the rotor, and use bolts to fix the mounting flange to the rotor end face;

[0042] Step S2: Rotate the rotor and use a micrometer to measure the runout of the inner wall of the rotating disk. Adjust the three ball-head plungers installed inside to make the inner wall of the disk achieve the required concentricity.

[0043] Step S3: Turn the handle clockwise to drive the rotating disk to rotate clockwise. The rotation of the rotating disk will cause the gripper sleeve to move accordingly, and the three grippers that are fitted into the corresponding sleeves will rotate accordingly, resulting in the grippers opening.

[0044] Step S4: Place the straight pipe to be welded into the centering clamping mechanism, adjust the distance between the welded straight pipe and the rotor, and slowly release the handle at the appropriate position. The mechanism will pull the jaws to retract through the tension force of the tension spring installed inside, so that the jaws clamp the welded straight pipe during the retraction process and position it at the center of the rotor shaft.

[0045] Step S5: Weld the positioned straight pipe to the side feed pipe. After welding, let it stand for a period of time to cool down before removing the welded pipe.

[0046] The above steps are the welding steps for the feed inlet pipe.

[0047] This invention addresses the limitations in the processing of feed pipes in current degassing machines, which restricts equipment installation and commissioning, indirectly affecting its use. It proposes a centering clamping mechanism where a rotating disc is located inside a mounting flange. Three ball-head plungers are evenly distributed within the mounting holes of the rotating disc, and the tops of the ball-head plungers are positioned in grooves on the inner wall of the mounting flange using a hexagonal wrench. A clamping support assembly is installed on the back of the clamping mechanism. The jaws first pass through the jaw sleeve and are then installed as a whole in the corresponding holes on the mounting flange and rotating disc. Rotating the rotating disc causes the jaws to rotate around the axis of the jaw sleeve, opening and closing the clamps. A tension spring is then installed, with one end installed in the middle of the jaw and the other end in the corresponding hole on the mounting flange. Under the spring's tension, the jaws experience an inward contraction force, achieving automatic clamping. This provides a reference for determining the welding position of the feed pipe on-site, improving welding accuracy, shortening commissioning time, reducing rework probability, and increasing assembly efficiency.

[0048] Figure 1 This is a 3 / 4 sectional view of the present invention mounted on the rotor of a degasser; Figure 2 This is a 3 / 4 sectional view of the feed pipe clamping and welding process on the degassing machine according to this utility model; Figure 3a and Figure 3b This is a complete 3D view of the assembled centering and clamping mechanism; Figure 4a and Figure 4b The front and rear views of the centering clamping mechanism are used to show that the grippers can clamp straight pipes of different diameters; Figure 5 This is a view of the three main components of the centering clamping mechanism after disassembly. Figure 6 Exploded view of the fixed support assembly, a component of the centering clamping mechanism; Figure 7 Exploded view of the positioning rotary assembly, a component of the centering clamping mechanism; Figure 8 Exploded view of the clamping support assembly, a component of the centering clamping mechanism.

[0049] First, please refer to the reference. Figure 1 , Figure 5 The present invention can be divided into three main parts: a fixed support component 1, a positioning and rotating component 2, and a clamping support component 3; after the three main parts are assembled, the overall clamping mechanism is installed on the end face of the rotor component.

[0050] refer to Figure 6 The fixed support assembly 1 includes a mounting flange 101 and a fixing bolt 102. The rotor assembly 103 in this embodiment is a degasser rotor reference part, used to illustrate the installation of this centering clamping mechanism, and is not part of the centering clamping mechanism. The mounting flange 101 is installed on the end face of the rotor assembly 103 by the fixing bolt 102 after the overall centering clamping mechanism is assembled.

[0051] refer to Figure 7 The positioning rotation assembly 2 includes a rotating disk 201, ball plungers 202, mounting handle 203, and fixing bolt 204. The three ball plungers 202 are respectively installed on the inner wall of the rotating disk 201 and arranged at a 120° angle. The ball head part contacts the guide groove inside the mounting flange 101, so that the rotating disk rotates around the axis along the guide groove. The mounting handle 203 and fixing bolt 204 are installed on the outer end face of the rotating disk 201.

[0052] Refer to Figure 3. Figure 8 The clamping support assembly 3 includes jaws 301, bearing bolts 302, jaw sleeves 303, spring mounting sleeves 304, mounting bolt one 305, mounting bolt two 306, and tension spring 307. The jaws 301 pass through the jaw sleeves 303 and are fixed to the mounting flange 101 by the bearing bolts 302. The protruding cylindrical pins of the jaw sleeves 303 are mounted on the rotating disk 201. The opening and closing of the three jaws 301 is achieved by rotating the rotating disk 201. One end of the tension spring 307 is fixed to the middle section of the jaws 301 by the mounting bolt two 306, and the other end is fixed to the mounting flange 101 by the mounting bolt one 305 and the spring mounting sleeve 304. At this time, the contraction force of the spring will force the jaws to retract inward until the three jaws clamp the welded straight pipe, realizing the function of automatic clamping and centering.

[0053] Combination Figure 1 , Figure 2 The following details the implementation methods for installation, positioning, clamping, and welding in this embodiment:

[0054] (a) Remove the cover plate of the rotor assembly and replace it with a clamping mechanism. Adjust the three ball plungers 202 in the positioning and rotating assembly, and use a micrometer to measure during the manual rotation of the rotor assembly. Make fine adjustments to the axis of the clamping mechanism so that the axis of the clamping mechanism is consistent with the axis of the rotor assembly.

[0055] (ii) Cut the straight pipe to the theoretical length, and then clamp it with the self-centering clamping support assembly to make fine adjustments along the axial direction of the welded straight pipe. Welding is carried out after the axial dimension is determined.

[0056] (iii) First, weld the elbow to the straight pipe clamped by the clamp. After this part is welded, weld the other side of the elbow to the straight pipe installed on the inner wall of the cavity.

[0057] (iv) After all welding is completed, allow the clamped parts to cool naturally. Once cooled, remove the feed pipe, rotate the handle of the clamping mechanism clockwise to loosen the jaws, and then unscrew the mounting screws to remove the clamping mechanism.

[0058] The aforementioned operating method improves the axial accuracy of the welded pipeline, avoiding a series of production and debugging problems that may occur during production due to coaxiality issues, such as substandard degassing and friction between the degassing components and the rotor. Simultaneously, because the system remains clamped throughout the welding cooling process, the deformation of the feed pipe after welding and cooling is minimal, eliminating problems caused by welding deformation and shortening the debugging time during equipment installation.

[0059] The contents not described in detail in this specification are existing technologies known to those skilled in the art. The standard parts used can be purchased from the market, and the irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the circuit connection adopts conventional connection methods in the existing technology, which will not be described in detail here.

[0060] This utility model is not limited to the above-described embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of this utility model shall be considered equivalent substitutions and shall be included within the protection scope of this utility model.

Claims

1. A centering device suitable for a degasser rotor, characterized in that: The system includes a fixed support assembly (1), a positioning and rotating assembly (2), and a clamping support assembly (3). The fixed support assembly (1) includes a mounting flange (101), which is mounted on the end face of the rotor by fixing bolts (102). The positioning and rotating assembly (2) includes a rotating disk (201) and ball-head plungers (202). The rotating disk (201) is located inside the mounting flange (101), and the ball-head plungers (202) are evenly distributed on the sides of the rotating disk (201). The rotating disk (201) and the rotor are kept concentric by turning the ball plunger (202). The clamping support assembly (3) includes a jaw (301), a jaw sleeve (303), and a tension spring (307). The jaw sleeve (303) is mounted on the rotating disk (201). The jaw (301) passes through the jaw sleeve (303) and slides freely inside the jaw sleeve (303). The tension spring (307) is mounted on the front end of the jaw (301) and the mounting flange (101) at both ends.

2. The centering device for a degasser rotor as described in claim 1, characterized in that: The ball-head plunger (202) is installed on the inner wall of the rotating disk (201) and is evenly arranged at a 120° angle. The ball head of the ball-head plunger (202) contacts the guide groove inside the mounting flange (101), thereby causing the rotating disk (201) to rotate around the axis along the guide groove.

3. The centering device for a degasser rotor as described in claim 1, characterized in that: The outer surface of the rotating disk (201) is fixed with an installation handle (203) by a fixing bolt (204). The installation handle (203) is used to facilitate the subsequent rotation operation of opening the gripper (301).

4. The centering device for a degasser rotor as described in claim 1, 2, or 3, characterized in that: The end of the gripper (301) passes through the gripper sleeve (303) and is fixed to the mounting flange (101) by the bearing bolt (302). The protruding cylindrical pin of the gripper sleeve (303) is installed on the rotating disk (201), and the gripper (301) is opened and closed by rotating the rotating disk (201).

5. The centering device for a degasser rotor as described in claim 4, characterized in that: The middle section of the bearing bolt (302) is a smooth cylindrical pin, and the bottom of the bearing bolt (302) is a cylindrical external thread. The middle section of the bearing bolt (302) is connected to the pin hole at the end of the clamp (301), and the external thread at the bottom of the bearing bolt (302) is installed in the corresponding hole of the mounting flange (101).

6. The centering device for a degasser rotor as described in claim 1, 2, or 3, characterized in that: The two ends of the tension spring (307) are respectively installed on the front end of the gripper (301) and the corresponding position of the mounting flange (101) by mounting bolt one (305) and mounting bolt two (306). After installation, the tension spring (307) has a preload force. The contraction force of the tension spring (307) will retract the gripper (301) inward, thereby making the gripper (301) in a contracted state in its natural state.

7. The centering device for a degasser rotor as described in claim 6, characterized in that: One end of the tension spring (307) is fixed to the middle section of the clamp (301) by mounting bolt two (306), and the other end of the tension spring (307) is fixed to the mounting flange (101) by mounting bolt one (305) and spring mounting sleeve 304.

Images