An adaptive inner sealing clamping device

Abstract

The present invention provides an adaptive inner seal clamping device, comprising: a soft sleeve; a rotating shaft, the rotating shaft is arranged through the soft sleeve, at least one end of which extends out of the soft sleeve, and two different axial parts on the rotating shaft are respectively sealed and connected to the ends of the soft sleeve; a rotating blade, a plurality of rotating blades are arranged in the soft sleeve, and are distributed on the outer wall of the rotating shaft to form support for the soft sleeve; a driving component, a plurality of driving components are arranged in the soft sleeve, and one-to-one correspondence drives the rotating blades to approach or move away from the rotating shaft. In the present invention, the movable rotating blades and the soft sleeve are used to form an effective squeeze on any part of the inner seal, and along with the feeding of the device, all the inner seals can be tightly fitted in the sealing grooves on the inner wall of the cylinder, thereby achieving high-quality installation of the inner seal, helping to ensure the sealing between the stator and the rotor, and reducing the probability of adverse conditions.

Description

Technical Field

[0001] The invention belongs to the technical field of inner seal installation of cylinder-type devices, and in particular relates to an adaptive inner seal pressing device. Background Art

[0002] In the field of engineering machinery, a device of a central rotating body is often used, which is mainly composed of a long stator and a long rotor. An inner seal is installed on the inner wall of the stator, and every two inner seals form a separate fluid channel. Different fluids are injected into the fluid channel from the outside, and then transported to the pipeline in front of the central rotating body through the channel in the rotor. In this process, the inner seal installed on the inner wall of the cylinder (stator) plays a key role. If the inner seal is not tightly fitted with the inner wall groove of the cylinder, it is very easy to cause uneven contact with the sealing lip during the rotation of the rotor, affecting the service life of the inner seal, and even causing cross-flow in the fluid channel formed between the seals, causing equipment use accidents. For cylinders with uniform diameters, rubber sticks of equal diameters can also be used for sealing and pressing operations, but for cylinders with variable diameters, or other cylinders with different diameters, rubber sticks of a single diameter cannot meet the use requirements. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an adaptive inner seal clamping device, which can improve the fit tightness between the inner seal component and the cylinder seal groove, thereby improving the installation quality between the stator and the rotor.

[0004] The present invention is implemented as follows: an adaptive inner sealing pressing device, comprising:

[0005] Soft cover;

[0006] A rotating shaft, the rotating shaft passes through the soft sleeve, at least one end of the rotating shaft extends out of the soft sleeve, and two different axial positions on the rotating shaft are respectively sealed and connected to the ends of the soft sleeve;

[0007] Rotating blades, a plurality of which are arranged in the soft sleeve and are distributed on the outer wall of the rotating shaft to support the soft sleeve;

[0008] A driving component is provided in plurality in the soft sleeve and drives the rotating blades to approach or move away from the rotating shaft in a one-to-one correspondence.

[0009] Furthermore, the driving component includes a telescopic rod; the telescopic rod shortens after receiving a first signal, and lengthens after receiving a second signal.

[0010] Furthermore, the driving component includes a first electromagnet and a second electromagnet; the first electromagnet and the second electromagnet generate suction force after receiving a first signal, and generate repulsion force after receiving a second signal.

[0011] Furthermore, the driving component includes a first electromagnet, a second electromagnet and a spring; the first electromagnet and the second electromagnet generate suction after receiving a signal, and the spring causes the rotating blade to have a tendency to move away from the rotating axis.

[0012] Furthermore, the rotating blade is slidably connected to the rotating shaft via a connecting component.

[0013] Furthermore, the connecting component comprises:

[0014] A receiving sleeve, wherein a plurality of receiving sleeves are provided on the outer wall of the rotating shaft;

[0015] A connecting rod, wherein a plurality of connecting rods are provided and are arranged in the corresponding receiving sleeves one by one to form a sliding connection;

[0016] The rotating blades are arranged one by one at the outer ends of the connecting rods.

[0017] Furthermore, the rotating blades have a first installation method and a second installation method. After the rotating blades are set in the first installation method, all the rotating blades are perpendicular to the central axis of the rotating shaft; after the rotating blades are set in the second installation method, the outer edges of all the rotating blades form a curve that approximates a spiral line.

[0018] Furthermore, a first slide groove and a second slide groove are provided on the receiving sleeve; the center planes of the first slide groove and the second slide groove both pass through the central axis of the receiving sleeve, the center plane of the first slide groove is parallel to the cross-section of the rotating shaft, and the center plane of the second slide groove forms an acute angle with the cross-section of the rotating shaft; the connecting rod is provided with a sliding limit rod; the sliding limit rod and the first slide groove form a sliding connection corresponding to the first installation mode of the rotating blade, and the sliding limit rod and the second slide groove form a sliding connection corresponding to the second installation mode of the rotating blade.

[0019] Furthermore, it also includes:

[0020] a first sealing plate, the first sealing plate connecting one end of the soft sleeve and a corresponding axial position on the rotating shaft;

[0021] The second sealing plate, wherein the first sealing plate connects the other end of the soft sleeve with the corresponding axial position on the rotating shaft.

[0022] Furthermore, it also includes:

[0023] A rotating handle is arranged on an end portion of the rotating shaft extending out of the soft sleeve.

[0024] The beneficial effects brought by the present invention are:

[0025] 1. In the present invention, the movable rotating blades and the soft sleeve are used to effectively squeeze any part of the inner seal, and along with the feeding of the device, all the inner seals can be tightly fitted in the sealing groove on the inner wall of the cylinder, thereby achieving high-quality installation of the inner seal, helping to ensure the sealing between the stator and the rotor and reducing the probability of adverse conditions.

[0026] 2. In the present invention, three methods are used to extend and retract the rotating blades. The electromagnetic control method has the advantages of simple structure and convenient control, while the telescopic rod control method has the advantages of large extrusion force and thus improved internal sealing tightness.

[0027] 3. In the present invention, the rotating blades are installed in two ways, which can respectively correspond to the installation requirements of the seal in the cylinders of different diameters and have good versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of a preferred embodiment of the present invention;

[0029] Figure 2 for Figure 1 a schematic cross-sectional view of the illustrated embodiment;

[0030] Figure 3 for Figure 1 A partial enlarged view of the embodiment shown;

[0031] Figure 4 for Figure 1 A cross-sectional view of the containment sleeve in the illustrated embodiment;

[0032] Figure 5 This is another preferred embodiment of the present invention.

[0033] Reference numerals:

[0034] 1. Rotating handle; 2. Rotating shaft; 2.1 First end; 2.2 Second end; 3. First sealing plate; 4. Second sealing plate; 5. Soft cover; 6. Cylinder; 7. Inner seal; 8. First electromagnet; 9. Second electromagnet; 10. Rotating blade; 11. Connecting rod; 12. Sliding limit rod; 13. Accommodating sleeve; 13.1 First slide groove; 13.2 Second slide groove; 14. Spring; 15. Remote controller; 16. Control line. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0036] Embodiment 1

[0037] like Figures 1 to 4 As shown, an adaptive inner sealing pressing device includes: a soft sleeve 5, a rotating shaft 2, a rotating blade 10 and a driving component.

[0038] The soft sleeve 5 is a rubber soft sleeve. When the inner seal 7 is installed, the outer wall of the soft sleeve 5 contacts the inner circumferential surface of the inner seal 7. The rotating shaft 2 is arranged through the soft sleeve 5, and has a first end 2.1 and a second end 2.2 opposite to the first end 2.1. The first end 2.1 of the rotating shaft 2 extends out of the soft sleeve 5. A rotating handle 1 is installed at the first end 2.1 for inputting power for forward propulsion in the cylinder 6.

[0039] A first sealing plate 3 is installed near the first end 2.1 of the rotating shaft 2, and a second sealing plate 4 is installed at the second end 2.2. One end of the soft sleeve 5 is sealed with the first sealing plate 3, and the other end is sealed with the second sealing plate 4. In order to better enter the interior of the cylinder 6, one end of the soft sleeve 5 near the second end 2.2 forms a closed structure. Since the soft sleeve 5 adopts a closed structure at one end of the second end 2.2, the diameter of the first sealing plate 3 is greater than the diameter of the second sealing plate 4.

[0040] The outer edge of the rotating blade 10 is an arc line, and its corresponding diameter is smaller than or slightly smaller than the diameter of the cylinder 6. A plurality of rotating blades 10 are arranged in the soft sleeve 5, 17 in this case. Each rotating blade 10 is slidably connected to the rotating shaft 2 through a connecting component. Specifically, the connecting component includes a receiving sleeve 13 and a connecting rod 11. The number of the receiving sleeves 13 is 17, and they are distributed on the outer wall of the rotating shaft 2 in a spiral array, and the central axis of the receiving sleeve 13 is perpendicular to the central axis of the rotating shaft 2. The number of connecting rods 11 is the same as that of the receiving sleeves 13, and they are arranged one-to-one in the corresponding receiving sleeves 13 to form a sliding connection. The rotating blades 10 are arranged one-to-one at the outer ends of the connecting rods 11.

[0041] like Figure 4 As shown, the receiving sleeve 13 is provided with a first slide groove 13.1 and a second slide groove 13.2; the center planes of the first slide groove 13.1 and the second slide groove 13.2 both pass through the central axis of the receiving sleeve 13, the center plane I of the first slide groove 13.1 is parallel to the cross section of the rotating shaft 2, and the center plane II of the second slide groove 13.2 forms an acute angle with the cross section of the rotating shaft 2, and the angle is 20° in this example. The connecting rod 11 is provided with a sliding limit rod 12; the sliding limit rod 12 forms a sliding connection with the first slide groove 13.1, which is the first installation mode of the rotating blade 10, and the sliding limit rod 12 forms a sliding connection with the second slide groove 13.2, which is the second installation mode of the rotating blade 10.

[0042] like Figure 3As shown, after the rotating blades 10 are arranged in the first installation mode, all the rotating blades 10 are perpendicular to the central axis of the rotating shaft 2. This installation mode is to better meet the installation requirements of the inner seal 7 in the cylinder 6 with a variable diameter. Figure 1 and 2 As shown, after the rotating blades 10 are arranged in the second installation mode, the outer edges of all the rotating blades 10 form a curve similar to a spiral line. This installation mode is designed to better meet the installation requirements of the inner seal 7 in the cylinder 6 with a constant diameter.

[0043] Before being installed in the cylinder 6, the rotating blades 10 should be in a retracted state so that the entire device can be extended into the cylinder 6. Therefore, the control of the rotating blades 10 is realized by the driving component. Specifically, the driving component is arranged in the soft sleeve 5 in the same number as the rotating blades 10, and drives the rotating blades 10 to approach or move away from the rotating shaft 2 one by one. In this example, Figure 2 As shown, the driving component includes a first electromagnet 8, a second electromagnet 9 and a spring 14. The number of the first electromagnets 8 is 17, and they are installed on the receiving sleeve 13 or the rotating seat 2 one by one. In this example, they are installed on the receiving sleeve 13. The number of the second electromagnets 9 is also 17, and they are installed on the connecting rod 11 or the rotating blade 10 one by one. In this example, they are installed on the connecting rod 11. The first electromagnet 8 and the second electromagnet 9 generate suction after receiving the signal. The spring 14 is arranged in the receiving sleeve 13, one end of which abuts the rotating shaft 2, and the other end abuts the connecting rod 11, so that the rotating blade 10 has a tendency to move away from the rotating shaft 2. The first electromagnet 8 and the second electromagnet 9 are both connected to the remote controller 15 through the control line 16, and the control of the electromagnet is realized by inputting different instructions to the remote controller 15. When the contraction instruction is input, the remote controller 15 sends a signal, and the electromagnet generates suction to shrink the rotating blade 10. At this time, the outer diameter of the entire device becomes small to the extent that it can extend into the cylinder 6. After entering the cylinder 6, a pause command is input, at which time the electromagnet loses power, the magnetic force disappears, and the rotating blade 10 extends outward under the action of the spring 14, so that the soft sleeve 5 generates an extrusion force on the inner seal 7 in the cylinder 6 to achieve the installation of the inner seal 7. It should be noted that in this embodiment, the electromagnet 8 only generates suction to shrink the rotating blade 10, so one of the electromagnets can also be replaced with other components that can be affected by magnetic force to achieve the same function, and the details will not be repeated. The principles and means for the remote control 15 to receive instructions and generate corresponding signals are all existing technologies and will not be repeated.

[0044] Taking the second installation method as an example, the working process of the device is specifically described: for the inner seal 7 installed in the cylinder 6 of equal diameter, the connecting rod 11 in the receiving sleeve 13 is installed in a 20° offset direction, so that the soft sleeve 5 can be in contact with the rotating blade 10 within the entire length range, so as to better achieve the tight installation of the inner seal 7. Before the device enters the cylinder 6, the remote control 15 is controlled to make the first electromagnet 8 and the second electromagnet 9 in the suction state, and the rotating blade 10 is contracted to the smallest diameter state, so that the device can enter the cylinder 6. The small diameter end of the device enters the cylinder 6 first, and the rotating handle 1 is turned to rotate the entire device forward. The remote control 15 is controlled to gradually make the first electromagnet 8 and the second electromagnet 9 that enter the cylinder range give up suction, and the rotating blade 10 and the connecting rod 11, under the rebound action of the spring 14, the diameter of the soft sleeve 5 is rapidly expanded to a state of fitting with the inner wall of the cylinder through the sliding limit rod 12 in the slide groove of the receiving sleeve 13. The continuous rotation of the device evenly fits and presses the inner seal 7 against the inner wall of the sealing groove. After the inner seal 7 is pressed tightly, the device needs to be pulled out. In order to control the soft cover 5 not to scratch the pressed inner seal 7 during the pulling out process, the remote controller 15 needs to be controlled again to attract the first electromagnet 8 and the second electromagnet 9 so that the rotating blade 10 retracts to the minimum diameter state again.

[0045] Embodiment 2

[0046] The difference from the embodiment is that the spring 14 is omitted from the driving component in this embodiment. Specifically, the driving component includes a first electromagnet 8 and a second electromagnet 9. After the remote controller 15 receives the contraction command, it generates a first signal. After receiving the first signal, the first electromagnet 8 and the second electromagnet 9 generate suction. At this time, the rotating blade 10 can contract, so that the outer diameter of the entire device becomes smaller. After receiving the extension command, the remote controller 15 generates a second signal. After receiving the second signal, the first electromagnet 8 and the second electromagnet 9 generate repulsion. At this time, the rotating blade 10 can extend, so that the outer diameter of the entire device becomes larger. The way the outer diameter of the control device in this embodiment becomes larger and smaller increases the power consumption relative to the first embodiment, but can provide greater pressure to better install the inner seal 7 in the sealing groove on the inner wall of the cylinder 6.

[0047] Embodiment 3

[0048] like Figure 5As shown, the difference from the first embodiment is that, in this embodiment, the driving component includes a telescopic rod 17, and the telescopic rod 17 can be electrically controlled to receive electrical signals, such as an electric cylinder, or can be hydraulically controlled to receive hydraulic signals, such as a hydraulic cylinder. The number of telescopic rods 17 is 17, and one end of the telescopic rod 17 is connected to the connecting rod 11, and the other end is connected to the receiving sleeve 13. After the remote control 15 receives the contraction command, it generates a first signal. The telescopic rod 17 shortens after receiving the first signal. At this time, the rotating blade 10 can shrink, so that the outer diameter of the entire device becomes smaller. After the remote control 15 receives the extension command, it generates a second signal. The telescopic rod 17 extends after receiving the second signal. At this time, the rotating blade 10 can extend, so that the outer diameter of the entire device becomes larger.

[0049] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation of the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0050] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An adaptive inner sealing clamping device, characterized in that: include: Soft cover (5); A rotating shaft (2), the rotating shaft (2) being arranged to penetrate the soft sleeve (5), at least one end of which protrudes out of the soft sleeve (5), and two different axial positions on the rotating shaft (2) being respectively sealedly connected to the end of the soft sleeve (5); Rotating blades (10), a plurality of rotating blades (10) are arranged in the soft sleeve (5), and are distributed on the outer wall of the rotating shaft (2) to support the soft sleeve (5); a driving component, wherein a plurality of the driving components are arranged in the soft sleeve (5) and drive the rotating blades (10) to move closer to or farther from the rotating shaft (2) in a one-to-one correspondence; the driving component comprises a telescopic rod (17); the telescopic rod (17) shortens upon receiving a first signal and lengthens upon receiving a second signal; The rotating blade (10) is slidably connected to the rotating shaft (2) via a connecting component; A rotating handle (1), the rotating handle (1) being arranged on an end portion of the rotating shaft (2) extending out of the soft sleeve (5); The connecting component comprises: A receiving sleeve (13), wherein a plurality of receiving sleeves (13) are provided on the outer wall of the rotating shaft (2); A connecting rod (11), wherein a plurality of connecting rods (11) are provided and are arranged one-to-one in the corresponding receiving sleeves (13) to form a sliding connection; The rotating blades (10) are arranged one by one at the outer ends of the connecting rods (11); The rotating blades (10) have a first installation mode and a second installation mode. When the rotating blades (10) are arranged in the first installation mode, all the rotating blades (10) are perpendicular to the central axis of the rotating shaft (2); when the rotating blades (10) are arranged in the second installation mode, the outer edges of all the rotating blades (10) form a curve that is approximately a spiral line. The receiving sleeve (13) is provided with a first slide groove (13.1) and a second slide groove (13.2); the center planes of the first slide groove (13.1) and the second slide groove (13.2) both pass through the center axis of the receiving sleeve (13); the center plane of the first slide groove (13.1) is parallel to the cross section of the rotating shaft (2), and the center plane of the second slide groove (13.2) forms an acute angle with the cross section of the rotating shaft (2); the connecting rod (11) is provided with a sliding limit rod (12); the sliding limit rod (12) and the first slide groove (13.1) form a sliding connection corresponding to the first installation mode of the rotating blade (10), and the sliding limit rod (12) and the second slide groove (13.2) form a sliding connection corresponding to the second installation mode of the rotating blade (10).

2. The adaptive inner sealing clamping device according to claim 1, characterized in that: The driving component comprises a first electromagnet (8) and a second electromagnet (9); the first electromagnet (8) and the second electromagnet (9) generate suction force after receiving a first signal, and generate repulsion force after receiving a second signal.

3. The adaptive inner sealing pressing device according to claim 1, characterized in that: The driving component comprises a first electromagnet (8), a second electromagnet (9) and a spring (14); the first electromagnet (8) and the second electromagnet (9) generate suction force after receiving a signal, and the spring (14) causes the rotating blade (10) to have a tendency to move away from the rotating shaft (2).

4. An adaptive inner sealing pressing device according to any one of claims 1 to 3, characterized in that: Also includes: A first sealing plate (3), the first sealing plate (3) connecting one end of the soft sleeve (5) and a corresponding axial position on the rotating shaft (2); A second sealing plate (4), wherein the first sealing plate (3) connects the other end of the soft sleeve (5) and a corresponding axial position on the rotating shaft (2).

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