Fixing tool for maintaining stator of screw pump

Abstract

The utility model belongs to the technical field of screw pumps, and particularly relates to a fixing tool for maintaining a screw pump stator, which comprises a disassembly and assembly platform, a sliding groove is arranged on the disassembly and assembly platform, a sliding seat is slidably connected in the sliding groove, a mounting seat is mounted above the sliding seat, a fixing component is mounted on the mounting seat, and the fixing component is fixedly connected with the sliding seat. The fixing assembly comprises two hydraulic rods and a fixing sleeve, and the hydraulic rods are symmetrically and fixedly mounted on the two sides of the mounting base; according to the utility model, the height of the stator is measured through the range finder, and the hydraulic rod is controlled to operate to adjust the height of the fixing sleeve, so that the fixing sleeve and the stator can be coaxially distributed, the electric push rod is operated to stretch to enable the clamp to clamp and fix the stator, and compared with the prior art, stators of various sizes can be fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of screw pumps, in particular to a fixing tool for repairing a screw pump stator. Background Art

[0002] The stator of a single screw pump is composed of an outer steel pipe and an inner rubber sleeve. It is one of the key parts of a single screw pump. Since the medium conveyed by a single screw pump generally contains impurities, the stator of a single screw pump is also a vulnerable part and often requires maintenance and replacement. When replacing the stator, you need to use special tools to fix the stator, and then rotate the rotor that meshes with it. The stator and the rotor will produce axial movement, thereby causing the stator to separate from the rotor or allowing the stator to be installed outside the rotor.

[0003] There are two existing tools for fixing stators: pipe clamps or chain clamps. However, for large-sized stators, due to the large outer diameter, there are no pipe clamps of corresponding specifications on the market that can be used; and chain clamps are complicated to operate, and chain clamps are not commonly used tools and are generally not available on site. Another method is to use self-made tooling, by customizing two separate fixing blocks, fixing them on the outer circle of the stator with bolts, and adjusting the tightness of the bolts to adjust the fit between the fixing block and the stator. This special tool has three problems: first, special tools for stators of different specifications cannot be universal, and dozens of large and small special tools for stators must be customized; second, because the stator is fixed by clamping, when the torque is large, the stator and the special tool will still slip and fail; third, if the fixing block is locked too tightly, the stator surface will be damaged, affecting the appearance, especially when replacing a new stator, the paint on the stator surface at the contact point will fall off.

[0004] The existing Chinese patent with announcement number CN216030438U discloses a single screw pump stator disassembly and assembly structure, which belongs to the technical field of screw pumps. The single screw pump stator disassembly and assembly structure includes a metal outer tube, and mounting blocks are respectively welded at opposite positions on the outside of the metal outer tube. Each mounting block is provided with a threaded hole I, and a screw is detachably connected in the threaded hole I, and the two screws are perpendicular to the central axis of the metal outer tube.

[0005] In view of the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: the device fixes the stator through a metal outer tube, and the inner diameter of the metal outer tube is fixed, and the annular size of the disassembly and assembly tool cannot be adjusted according to different stators, and improvement is needed; therefore, a fixing tool for repairing the screw pump stator is proposed to address the above problems. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the utility model proposes a fixing tool for repairing a screw pump stator.

[0007] The technical solution adopted by the utility model to solve its technical problems is as follows: the fixing tool for repairing the stator of the screw pump described in the utility model comprises a disassembly and assembly platform, a slide groove is provided on the disassembly and assembly platform, a sliding seat is slidably connected inside the slide groove, a mounting seat is installed above the sliding seat, a fixing component is installed on the mounting seat, the fixing component comprises two hydraulic rods and a fixing sleeve, the hydraulic rods are symmetrically fixedly installed on both sides of the mounting seat, and the driving end of the hydraulic rod is fixedly connected to the sliding seat, the fixing sleeve is fastened to the mounting seat by bolts, a plurality of electric push rods distributed in an annular shape are fixedly connected to the outer wall of the fixing sleeve, and the driving end of the electric push rod is fixedly connected to a clamp, the screw pump is installed on the disassembly and assembly platform, the height of the fixing sleeve is adjusted by operating the hydraulic rod, the fixing sleeve is coaxially distributed with the stator, the sliding seat is pushed to move so that the fixing sleeve passes through the stator, the electric push rod is operated to extend so that the clamp clamps and fixes the stator, and then the rotor meshing with it is rotated, the stator and the rotor will generate axial movement, so that the stator can be smoothly separated from the rotor or the installation of the stator is completed.

[0008] Preferably, an anti-skid pad is fixedly connected to the surface of the clamp, and the anti-skid pad increases the friction force on the stator, thereby improving the fixing effect and preventing the stator surface from being damaged.

[0009] Preferably, the interior of the slide groove is rotatably connected to a lead screw, and the lead screw is threadedly connected to the sliding seat, the side wall of the disassembly and assembly platform is fixedly connected to a driver, and the driving end of the driver is fixedly connected to one end of the lead screw, and the sliding seat can be moved laterally by driving the lead screw to rotate through the driver.

[0010] Preferably, an L-shaped vertical plate is fixedly connected above the disassembly and assembly platform, and two upper and lower distance meters are fixedly connected to the opposite sides of the vertical plate and the disassembly and assembly platform respectively. The upper and lower distance meters detect the distance from the stator. The radius of the stator can be obtained by subtracting the measured distance from the lengths of the upper and lower distance meters, and the height of the center point of the stator can be obtained by adding the length of the lower distance meter to the radius of the stator. When the hydraulic rod is controlled to run to a corresponding height, the fixed sleeve and the stator can be automatically aligned.

[0011] Preferably, a hand-held component is installed on the surface of the fixing sleeve, and the hand-held component includes two upper and lower threaded rings, and the threaded rings are rotatably connected to the fixing sleeve. The fixing sleeve can be disassembled for use. After the fixing sleeve is disassembled, the threaded rotating rod is connected to the threaded ring, and the threaded rotating rod is installed on both sides of the fixing sleeve, so as to facilitate manual grip of the fixing sleeve for use.

[0012] Preferably, the internal thread of the threaded ring has a threaded turning rod.

[0013] Preferably, a U-shaped clamping plate is fixedly connected to the lower side wall of the threaded rotating rod.

[0014] Preferably, the handheld assembly also includes two sets of upper and lower positioning sleeves, each set of positioning sleeves is provided with two, the positioning sleeves are fixedly mounted on the surface of the fixing sleeve, and when the threaded rotating rod is installed, the clamping plate is inserted into the interior of the positioning sleeve to fix the threaded rotating rod to prevent the threaded rotating rod from loosening and falling off when being held.

[0015] The utility model is beneficial in that:

[0016] 1. The utility model measures the height of the stator by a distance meter, controls the operation of the hydraulic rod to adjust the height of the fixing sleeve, so that the fixing sleeve and the stator can be coaxially distributed, and the electric push rod is extended to allow the clamp to clamp and fix the stator. Compared with the prior art, stators of various sizes can be fixed.

[0017] 2. The utility model connects the threaded rotating rod with the threaded ring so that the fixing sleeve can be disassembled for use, and is convenient for manual gripping. The clamping plate is inserted into the interior of the positioning sleeve to fix the threaded rotating rod to prevent the threaded rotating rod from loosening and falling off when being gripped. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 For this utility model Figure 1 Side view;

[0021] Figure 3 This is a schematic diagram of the structure of the fixed component of the utility model;

[0022] Figure 4 For this utility model Figure 3 A structural diagram of ;

[0023] Figure 5 This is a schematic diagram of the structure of the handheld component of the utility model.

[0024] In the figure: 1. disassembly and assembly platform; 2. slide groove; 3. sliding seat; 4. mounting seat; 5. fixing assembly; 51. hydraulic rod; 52. fixing sleeve; 53. electric push rod; 54. clamp; 6. lead screw; 7. drive; 8. vertical plate; 9. hand-held assembly; 91. threaded ring; 92. threaded rotating rod; 93. clamping plate; 94. positioning sleeve; 10. distance meter. DETAILED DESCRIPTION

[0025] 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.

[0026] Embodiment 1

[0027] See also Figure 1-4 As shown, a fixing tool for repairing a screw pump stator comprises a disassembly and assembly platform 1, a slide groove 2 is provided on the disassembly and assembly platform 1, a sliding seat 3 is slidably connected inside the slide groove 2, a mounting seat 4 is installed above the sliding seat 3, a fixing assembly 5 is installed on the mounting seat 4, and the fixing assembly 5 comprises two hydraulic rods 51 and a fixing sleeve 52, the hydraulic rods 51 are symmetrically fixedly installed on both sides of the mounting seat 4, and the driving end of the hydraulic rod 51 is fixedly connected to the sliding seat 3, the fixing sleeve 52 is fastened to the mounting seat 4 by bolts, and the outer wall of the fixing sleeve 52 is fixedly connected to A plurality of electric push rods 53 are distributed in a ring shape, and the driving end of the electric push rods 53 is fixedly connected with a clamp 54. The screw pump is installed on the disassembly and assembly platform 1, and the height of the fixed sleeve 52 is adjusted by operating the hydraulic rod 51, so that the fixed sleeve 52 and the stator are coaxially distributed, and the sliding seat 3 is pushed to move so that the fixed sleeve 52 passes through the stator. The electric push rods 53 are operated to extend so that the clamp 54 clamps and fixes the stator, and then the rotor meshing with it is rotated, and the stator and the rotor will generate axial movement, so that the stator can be smoothly separated from the rotor or the installation of the stator is completed.

[0028] The surface of the clamp 54 is fixedly connected with an anti-skid pad, which increases the friction force on the stator and improves the fixing effect, while preventing the stator surface from being damaged.

[0029] The inside of the slide groove 2 is rotatably connected with a lead screw 6, and the lead screw 6 is threadedly connected to the sliding seat 3. The side wall of the disassembly and assembly platform 1 is fixedly connected with a driver 7, and the driving end of the driver 7 is fixedly connected to one end of the lead screw 6. The lead screw 6 is driven to rotate by the driver 7, and the sliding seat 3 can be moved laterally.

[0030] An L-shaped vertical plate 8 is fixedly connected above the disassembly and assembly platform 1. Two upper and lower distance meters 10 are fixedly connected to the vertical plate 8 and the opposite side of the disassembly and assembly platform 1. The upper and lower distance meters 10 detect the distance from the stator. The radius of the stator can be obtained by subtracting the measured distance from the length of the upper and lower distance meters 10, and the height of the center point of the stator can be obtained by adding the length of the lower distance meter 10 to the radius of the stator. When the hydraulic rod 51 is controlled to run to a corresponding height, the fixed sleeve 52 and the stator can be automatically aligned.

[0031] Embodiment 2

[0032] For comparison with Example 1, please refer to Figure 5 As shown, the utility model provides another embodiment, a hand-held component 9 is installed on the surface of the fixed sleeve 52, and the hand-held component 9 includes two upper and lower threaded rings 91, and the threaded rings 91 are rotatably connected to the fixed sleeve 52, and the fixed sleeve 52 can be disassembled for use. After the fixed sleeve 52 is disassembled, the threaded rotating rod 92 is connected to the threaded ring 91, and the threaded rotating rod 92 is installed on both sides of the fixed sleeve 52, so as to facilitate manual grip of the fixed sleeve 52 for use.

[0033] The inner thread of the threaded ring 91 has a threaded rotating rod 92 .

[0034] A U-shaped clamping plate 93 is fixedly connected to the lower side wall of the threaded rotating rod 92 .

[0035] The handheld component 9 also includes two sets of upper and lower positioning sleeves 94, each set of positioning sleeves 94 is provided with two, and the positioning sleeves 94 are fixedly installed on the surface of the fixed sleeve 52. When the threaded rotating rod 92 is installed, the clamping plate 93 is inserted into the interior of the positioning sleeve 94 to fix the threaded rotating rod 92 to prevent the threaded rotating rod 92 from loosening and falling off when being grasped.

[0036] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and according to the actual situation, a suitable controller should be selected to be electrically connected to the hydraulic rod 51, the electric push rod 53, the driver 7 and the rangefinder 10 to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the working order. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and does not explain the electrical control.

[0037] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art.

[0038] Working principle: install the screw pump on the disassembly and assembly platform 1, adjust the height of the fixing sleeve 52 by operating the hydraulic rod 51, make the fixing sleeve 52 and the stator coaxially distributed, push the sliding seat 3 to move so that the fixing sleeve 52 passes through the stator, operate the electric push rod 53 to extend so that the clamp 54 clamps and fixes the stator, and then rotate the rotor meshing with it, the stator and the rotor will generate axial movement, so that the stator can be smoothly separated from the rotor or the installation of the stator is completed.

[0039] The fixing sleeve 52 can be disassembled for use. After the fixing sleeve 52 is disassembled, the threaded turning rod 92 is connected to the threaded ring 91, and the threaded turning rod 92 is installed on both sides of the fixing sleeve 52, so as to facilitate manual gripping of the fixing sleeve 52 for use. When the threaded turning rod 92 is installed, the clamping plate 93 is inserted into the interior of the positioning sleeve 94 to fix the threaded turning rod 92 to prevent the threaded turning rod 92 from loosening and falling off when being gripped.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A fixing tool for repairing a screw pump stator, comprising a disassembly and assembly platform (1), characterized in that: The disassembly and assembly platform (1) is provided with a slide groove (2), the interior of the slide groove (2) is slidably connected to a sliding seat (3), a mounting seat (4) is installed above the sliding seat (3), a fixing assembly (5) is installed on the mounting seat (4), and the fixing assembly (5) comprises two hydraulic rods (51) and a fixing sleeve (52), the hydraulic rods (51) are symmetrically fixedly installed on both sides of the mounting seat (4), and the driving end of the hydraulic rod (51) is fixedly connected to the sliding seat (3), the fixing sleeve (52) is fastened to the mounting seat (4) by bolts, and the outer wall of the fixing sleeve (52) is fixedly connected to a plurality of electric push rods (53) distributed in an annular shape, and the driving end of the electric push rod (53) is fixedly connected to a clamp (54).

2. The fixing tool for repairing a screw pump stator according to claim 1, characterized in that: An anti-slip pad is fixedly connected to the surface of the clamp (54).

3. The fixing tool for repairing a screw pump stator according to claim 1, characterized in that: The interior of the slide groove (2) is rotatably connected to a lead screw (6), and the lead screw (6) is threadedly connected to the sliding seat (3); the side wall of the disassembly and assembly platform (1) is fixedly connected to a driver (7), and the driving end of the driver (7) is fixedly connected to one end of the lead screw (6).

4. The fixing tool for repairing a screw pump stator according to claim 1, characterized in that: An L-shaped vertical plate (8) is fixedly connected above the assembly and disassembly platform (1), and two upper and lower distance meters (10) are respectively fixedly connected to opposite sides of the vertical plate (8) and the assembly and disassembly platform (1).

5. The fixing tool for repairing a screw pump stator according to claim 1, characterized in that: A handheld component (9) is mounted on the surface of the fixing sleeve (52), and the handheld component (9) comprises two upper and lower threaded rings (91), and the threaded rings (91) are rotatably connected to the fixing sleeve (52).

6. The fixing tool for repairing the stator of a screw pump according to claim 5, characterized in that: The internal thread of the threaded ring (91) is provided with a threaded rotating rod (92).

7. The fixing tool for repairing a screw pump stator according to claim 6, characterized in that: A U-shaped clamping plate (93) is fixedly connected to the lower side wall of the threaded rotating rod (92).

8. The fixing tool for repairing a screw pump stator according to claim 5, characterized in that: Place The handheld assembly (9) further comprises two sets of upper and lower positioning sleeves (94), each set of positioning sleeves (94) having two, The positioning sleeve (94) is fixedly mounted on the surface of the fixing sleeve (52).

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