CN216030438U

CN216030438U - Single screw pump stator dismouting structure

Info

Publication number: CN216030438U
Application number: CN202122304066.8U
Authority: CN
Inventors: 王慧明; 叶海波; 胡丹慧
Original assignee: Huangshan Single Screw Pump Co ltd
Current assignee: Huangshan Single Screw Pump Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-03-15
Anticipated expiration: 2031-09-23

Abstract

The utility model discloses a single-screw pump stator dismounting structure, which belongs to the technical field of screw pumps and comprises a metal outer pipe, wherein mounting blocks are welded at opposite positions outside the metal outer pipe respectively, each mounting block is provided with a threaded hole I, a screw is detachably connected in each threaded hole I, and the two screws are all perpendicular to the central axis of the metal outer pipe.

Description

Single screw pump stator dismouting structure

Technical Field

The utility model relates to the technical field of screw pumps, in particular to a stator dismounting structure of a single-screw pump.

Background

The stator of the single-screw pump is composed of an external steel pipe and an internal rubber sleeve, and is one of key parts of the single-screw pump.

Existing tools for fixing stators include two types: one is to adopt a pipe wrench or a chain wrench, but for a large-specification stator, no pipe wrench with a corresponding specification can be applied in the market due to a larger outer diameter; the chain tongs are complex to operate, are not common tools and are not available on the spot generally. The other kind is to use self-control frock, through the fixed block of customization bipartition body, fixes it on the stator excircle with the bolt, adjusts the cooperation between fixed block and the stator through adjusting bolt's elasticity, and this specialized tool has three problem: firstly, special tools for stators with different specifications cannot be used universally, and dozens of stator special tools with different sizes are customized; secondly, as the stator is fixed in a clamping mode, when the torque is large, the stator and the special tool still have a slipping phenomenon and fail; thirdly, if the fixed block lock is too tight, the surface of the stator can be clamped to be damaged, the appearance is affected, and particularly, when a new stator is replaced, paint on the surface of the stator at a contact part can fall off.

Therefore, the defects of the special tools all result in that when the stator of the single-screw pump is disassembled and assembled on site, time and labor are wasted, even some stators which are blocked cannot be disassembled from the pump, only the whole machine can be sent back to a manufacturer for maintenance, the site use is seriously affected, and the maintenance cost is greatly increased.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides a stator dismounting structure of a single-screw pump, which is simple in structure and convenient for fixing the stator, can realize the dismounting of the stator without an additional special dismounting tool, easily realizes the replacement of the stator and saves financial and material resources.

In order to achieve the purpose, the technical scheme adopted by the utility model for solving the technical problems is as follows: the single-screw pump stator dismounting structure comprises a metal outer pipe, mounting blocks are welded at positions, opposite to the outer side of the metal outer pipe, a threaded hole I is formed in each mounting block, a screw rod is detachably connected in each threaded hole I, and the two screw rods are perpendicular to the central axis of the metal outer pipe.

The metal outer pipe is characterized in that a rubber sleeve is arranged on the inner side of the metal outer pipe, a plurality of glue injection holes which inject glue to the outside of the rubber sleeve to enable the rubber sleeve to be tightly connected with the metal outer pipe are formed in the outer side of the metal outer pipe, and sealing plugs are installed at the glue injection holes.

The glue injection holes comprise two glue injection holes, and the axes of the two glue injection holes coincide with the axes of the corresponding threaded holes I.

The dismouting structure is still including erectting the U-shaped swivel mount of preventing of metal outer tube below, the U-shaped both ends of preventing the swivel mount are erect the both sides of metal outer tube, just the U-shaped both ends of preventing the swivel mount are provided with screw hole II respectively, the one end of screw rod is passed link to each other with screw hole I that corresponds behind the screw hole II.

The bottom of the U-shaped anti-rotation seat is connected to the disassembling and assembling platform in a sliding mode.

And wedge-shaped base plates are detachably connected between two sides of the bottom of the U-shaped anti-rotation seat and the disassembling and assembling platform.

The wedge-shaped base plate is connected to the disassembling and assembling platform in a sliding mode along the direction perpendicular to the axis of the metal outer pipe.

The utility model has the beneficial effects that:

1. according to the utility model, the installation blocks are welded at the opposite positions outside the metal outer pipe, the threaded holes I are drilled in the installation holes, the screw rods are screwed tightly and installed in the threaded holes I, then the two screw rods are gripped in a hand-held manner, the metal outer pipe (namely a stator) can be ensured to be fixed, the stator and the rotor can generate axial movement by coiling the rotor meshed with the screw rods, so that the stator is separated from the rotor or the stator is installed, the stator can be assembled and disassembled without an additional special assembling and disassembling tool, the stator can be easily replaced, and financial and material resources are saved.

2. According to the utility model, the glue injection hole is formed in the metal outer pipe, so that glue can be conveniently injected into the metal outer pipe through the glue injection hole to bond and connect the rubber sleeve and the metal outer pipe, the mounting block is welded at the two opposite glue injection holes to provide positioning for welding the mounting block, and the screw rod is mounted in the threaded hole I of the mounting block, so that the stator is fixed, the glue injection hole can be further plugged, and the sealing effect is further improved.

3. According to the stator fixing device, the U-shaped anti-rotation bases are arranged on the disassembling and assembling platform below the stator, the threaded holes II opposite to the threaded holes I are formed in two ends of each U-shaped anti-rotation base, and one ends of the screws penetrate through the threaded holes II and then are connected with the corresponding threaded holes I, so that the stator can be fixed without manually holding the screws, the stator fixing stability is improved, and the stator can be disassembled more conveniently and quickly.

To sum up, this stator dismouting simple structure makes the stator fixed convenient, stable, can easily realize the change of stator, has saved financial resources and materials.

Drawings

The contents of the expressions in the various figures of the present specification and the labels in the figures are briefly described as follows:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a longitudinal cross-sectional view of FIG. 1;

FIG. 3 is a schematic structural view of the stator being positioned and fixed on the U-shaped anti-rotation seat;

the labels in the above figures are: 1. the anti-rotation mounting structure comprises a metal outer pipe, 11 glue injection holes, 2 mounting blocks, 21 threaded holes I, 3 screws, 4 rubber sleeves, 5U-shaped anti-rotation seats, 51 threaded holes II, 6 dismounting platforms, 7 wedge-shaped base plates and 8 sealing plugs.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The specific implementation scheme of the utility model is as follows: as shown in fig. 1 and 2, a single-screw pump stator dismounting structure, including metal outer tube 1, the relative position punishment in the outside of metal outer tube 1 has welded installation piece 2 respectively, be provided with screw hole I21 on every installation piece 2, can dismantle in screw hole I21 and be connected with screw rod 3, two screw rods 3 all are perpendicular with the central axis of metal outer tube 1, install in screw hole I21 through screwing up screw rod 3, then grasp two screw rods 3 through the mode of holding, can ensure that metal outer tube 1 (being the stator) is immobile, through the rotor of dish meshing with it, stator and rotor will produce axial motion, thereby make the stator leave or accomplish the installation of stator from the rotor, the dismouting of stator can be realized to need not other special assembly and disassembly tools, easily realize the change of stator, financial resources and materials have been saved.

Specifically, 1 inboard wherein metal outer tube is provided with

rubber sleeve

4, 1 outside of metal outer tube is provided with a plurality of injecting glue holes 11 that make rubber sleeve 4 and metal outer tube 1 closely link to each other to the outer injecting glue of rubber sleeve 4, injecting glue hole 11 department installs sealed end cap 8, injecting glue hole 11 includes two, and the axis of two injecting glue holes 11 coincides mutually with the axis of the screw hole I21 that corresponds, the welding that sets up to installation piece 2 of two injecting glue holes 11 provides the location, through installing screw rod 3 in the screw hole I21 to installation piece 2, make the tip of screw rod 3 compress tightly sealed end cap 8, both realized fixing the stator, can make injecting glue hole 11 further shutoff again, further improved sealed effect.

Specifically, as shown in fig. 3, the dismounting structure further comprises a U-shaped anti-rotation seat 5 erected below the metal outer tube 1, two ends of the U-shaped anti-rotation seat 5 are erected on two sides of the metal outer tube 1, two ends of the U-shaped anti-rotation seat 5 are respectively provided with a threaded hole ii 51, one end of the screw rod 3 is connected with a corresponding threaded hole i 21 after passing through the threaded hole ii 51, the screw rod 3 is not required to be manually held, the stator can be circumferentially fixed, the stator fixing stability is improved, and the stator can be more conveniently and rapidly dismounted. And the bottom of the U-shaped anti-rotation seat 5 is connected on the dismounting platform 6 along the axial sliding of the stator, a sliding guide rail matched with the bottom of the U-shaped anti-rotation seat 5 can be arranged on the dismounting platform 6, when the U-shaped anti-rotation seat 5 is used for fixing the circumferential direction of the stator, then the rotor meshed with the stator is coiled, the stator and the rotor can generate axial motion, so that the U-shaped anti-rotation seat 5 drives the stator to move along the axial direction, and the stator can smoothly leave from the rotor or complete the installation of the stator.

In addition, in order to match the single screw 3 pump of different dimensions, the installation piece 2 outside the stator is apart from the high difference of dismouting platform 6 promptly, through can dismantling between the bottom both sides of the seat 5 of preventing changeing in the U-shaped and dismouting platform 6 and be connected with wedge backing plate 7, can set up on the dismouting platform 6 with wedge backing plate 7 sliding fit's longitudinal sliding track, wedge backing plate 7 along with the axis vertically direction sliding connection of metal outer tube 1 on dismouting platform 6, fix a position wedge backing plate 7 through the bolt. The height of the U-shaped anti-rotation seat 5 can be adjusted by sliding the two wedge-shaped base plates 7, so that the axis of the threaded hole II 51 at the two ends of the U-shaped anti-rotation seat 5 coincides with the axis of the threaded hole I21 in the stator outer side mounting block 2, and the screw rods 3 can be smoothly mounted on the mounting blocks 2 at the two sides of the stator.

The disassembly and assembly structure has two disassembly and assembly methods, one is to not use the U-shaped anti-rotation seat 5. The pump with the single screw 3 is directly placed on the dismounting platform 6, the screw 3 is installed on the installation block 2 outside the stator, the two screws 3 are grasped in a hand-held mode, the stator is ensured to be fixed, the stator and the rotor can generate axial movement through the rotor meshed with the stator in a disc moving mode, and therefore the stator is separated from the rotor or the stator is installed.

Another is to use a U-shaped anti-rotation seat 5. Firstly, the U-shaped anti-rotation seat 5 is connected to the dismounting platform 6 in a sliding manner, and the position of the U-shaped anti-rotation seat 5 is adjusted to enable two ends of the U-shaped anti-rotation seat 5 to be opposite to the mounting blocks 2 on two sides of the stator; the height of the U-shaped anti-rotation seat 5 is adjusted by sliding wedge-shaped base plates 7 on two sides of the bottom of the U-shaped anti-rotation seat 5, so that threaded holes II 51 at two ends of the U-shaped anti-rotation seat 5 are overlapped with the axis of a threaded hole I21 in the stator outer side mounting block 2; then, one end of the screw rod 3 penetrates through the threaded hole II 51 and then is connected with the corresponding threaded hole I21, and circumferential anti-rotation positioning of the stator is completed; and finally, the rotor meshed with the rotor is coiled, so that the U-shaped anti-rotation seat 5 drives the stator to move along the axial direction, and the stator is smoothly separated from the rotor or the stator is installed.

While the foregoing is directed to the principles of the present invention, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

Claims

1. The utility model provides a single-screw pump stator dismouting structure, its characterized in that includes the metal outer tube, the relative position punishment in the outside of metal outer tube has welded the installation piece respectively, is provided with screw hole I on every installation piece, can dismantle in the screw hole I and be connected with the screw rod, two screw rods all with the central axis of metal outer tube is perpendicular.

2. The structure for disassembling and assembling a stator of a single-screw pump according to claim 1, wherein: the metal outer pipe is characterized in that a rubber sleeve is arranged on the inner side of the metal outer pipe, a plurality of glue injection holes which inject glue to the outside of the rubber sleeve to enable the rubber sleeve to be tightly connected with the metal outer pipe are formed in the outer side of the metal outer pipe, and sealing plugs are installed at the glue injection holes.

3. The structure for disassembling and assembling a stator of a single-screw pump according to claim 2, wherein: the glue injection holes comprise two glue injection holes, and the axes of the two glue injection holes coincide with the axes of the corresponding threaded holes I.

4. The structure for disassembling and assembling a stator of a single-screw pump according to claim 1, wherein: the dismouting structure is still including erectting the U-shaped swivel mount of preventing of metal outer tube below, the U-shaped both ends of preventing the swivel mount are erect the both sides of metal outer tube, just the U-shaped both ends of preventing the swivel mount are provided with screw hole II respectively, the one end of screw rod is passed link to each other with screw hole I that corresponds behind the screw hole II.

5. The structure for disassembling and assembling a stator of a single-screw pump according to claim 4, wherein: the bottom of the U-shaped anti-rotation seat is connected to the disassembling and assembling platform in a sliding mode.

6. The structure for disassembling and assembling a stator of a single-screw pump according to claim 4, wherein: and wedge-shaped base plates are detachably connected between two sides of the bottom of the U-shaped anti-rotation seat and the disassembling and assembling platform.

7. The structure for disassembling and assembling a stator of a single-screw pump according to claim 6, wherein: the wedge-shaped base plate is connected to the disassembling and assembling platform in a sliding mode along the direction perpendicular to the axis of the metal outer pipe.