Gas plastic pipe self-locking type leaking stoppage device and using method thereof
By designing a self-locking leak-sealing device, which uses a torsion spring to drive the opening and closing of the clamping plate, the leak point of the gas plastic pipe can be efficiently sealed. This solves the problems of secondary damage to the plastic pipe and poor sealing caused by existing tools, and provides a convenient and robust sealing solution.
Patent Information
- Application Number
- CN202510784401.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-12
- Publication Date
- 2025-11-07
AI Technical Summary
Existing gas pipe sealing tools are prone to causing secondary damage to the pipes, resulting in poor sealing, instability, and an inability to effectively prevent gas leaks.
A self-locking leak-sealing device was designed, comprising a screw, a limit nut, a positioning clip, a rubber plug, and a locking nut. The device achieves efficient sealing of leak holes by driving the opening and closing of the clip plate through a torsion spring.
This device will not cause secondary damage to the plastic pipe, is easy to install and securely fixed, and can effectively seal leaks and prevent gas leakage.
Smart Images
Figure CN120907033A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of gas leakage blocking, in particular to a device for blocking leakage of gas plastic pipe and a method for using the device. BACKGROUND
[0002] The gas pipe network includes steel pipes and plastic pipes. When a leakage point appears on the plastic pipe, i.e. a leakage hole appears on the pipe wall of the plastic pipe, the leakage point needs to be temporarily blocked in time so as to replace the plastic pipe with the leakage point later. The existing tool for temporarily blocking the leakage point of the plastic pipe is a wooden expander. The wooden expander is in a cylindrical shape, and one end thereof is in a conical shape. The conical end is inserted into the leakage point of the plastic pipe to achieve temporary blocking. However, the temporary blocking method has the following problems: (1) the hardness of the wooden expander is relatively high, which can expand the damaged area of the plastic pipe, i.e. the leakage hole becomes larger, thereby causing secondary damage to the plastic pipe; (2) the wooden expander cannot effectively prevent gas leakage, and the sealing is not tight; (3) the wooden expander is easy to fall off, and the stability is poor; and (4) the wooden expander can absorb water to swell and deform under pressure, so that it cannot be used, and thus the durability is weak. SUMMARY
[0003] The technical problem to be solved by the present application is to provide a self-locking leakage blocking device for gas plastic pipe and a method for using the same, which can not cause secondary damage to the gas plastic pipe, and is convenient to install, fixed firmly, and capable of efficiently blocking the leakage point.
[0004] The self-locking leakage blocking device for gas plastic pipe in the present application comprises a screw rod, the two ends of the screw rod are a first end and a second end respectively, a limiting nut, a positioning card, a rubber plug and a locking nut are sequentially arranged on the screw rod along the direction from the first end to the second end, the limiting nut, the positioning card and the locking nut are threadedly connected to the screw rod respectively, the rubber plug is sleeved on the screw rod, one end of the rubber plug towards the positioning card is conical, the positioning card comprises a base, the base is threadedly connected to the screw rod, opposite sides of the base are respectively hinged to a clamping plate, a torsion spring is arranged on the base, two ends of the torsion spring are respectively abutted on the two clamping plates, when the two clamping plates are rotated towards each other in the direction of the rubber plug, the torsion spring is tightened, when the two clamping plates are rotated away from each other in the direction away from the rubber plug, the torsion spring is relaxed until the opposite ends of the two clamping plates abut each other.
[0005] The gas plastic pipe self-locking type leaking stoppage device in the application, wherein the base is in a cylindrical shape, an inner thread matched with the screw rod is arranged on the inner cylinder wall of the base, the base is threadedly connected to the screw rod through the inner thread, two hinge shafts are arranged on the outer cylinder wall of the base in opposite directions, the two clamping plates are respectively a first clamping plate and a second clamping plate, one end of the first clamping plate is hingedly connected to the two hinge shafts, one end of the second clamping plate is also hingedly connected to the two hinge shafts, the two side surfaces of the first clamping plate and the second clamping plate respectively face the rubber plug and the limiting nut, the torsional spring is sleeved on at least one of the two hinge shafts, and the two ends of the torsional spring respectively abut on the side surfaces of the first clamping plate and the second clamping plate facing the rubber plug.
[0006] The gas plastic pipe self-locking type leaking stoppage device in the application, wherein the first clamping plate comprises a first bottom plate and two first side plates, the two side surfaces of the first bottom plate respectively face the rubber plug and the limiting nut, the two first side plates are arranged on the side surface of the first bottom plate facing the rubber plug in opposite directions, the first bottom plate and the two first side plates jointly form a first U-shaped structure, one end of each of the two first side plates is hingedly connected to the two hinge shafts, the base is located in the first U-shaped structure, the second clamping plate comprises a second bottom plate and two second side plates, the two side surfaces of the second bottom plate respectively face the rubber plug and the limiting nut, the two second side plates are arranged on the side surface of the second bottom plate facing the rubber plug in opposite directions, the second bottom plate and the two second side plates jointly form a second U-shaped structure, one end of each of the two second side plates is hingedly connected to the two hinge shafts, the two first side plates are located between the two second side plates, the base is located in the second U-shaped structure, the two hinge shafts are coaxial and arranged perpendicular to the axis of the base, the distance from the second bottom plate to the hinge shaft axis is less than or equal to the distance from the first bottom plate to the hinge shaft axis, the torsional spring is sleeved on each of the two hinge shafts, the two ends of the torsional spring respectively abut on the side surfaces of the first bottom plate and the second bottom plate facing the rubber plug, when the opposite ends of the two clamping plates abut on each other, the end of the second bottom plate close to the base abuts on the end of the first bottom plate and / or the two first side plates close to the base, and the end of the first bottom plate and the end of the second bottom plate close to the base are each provided with a slot through which the screw rod passes.
[0007] The gas plastic pipe self-locking type leaking stoppage device in the application, wherein a gasket is arranged between the rubber plug and the locking nut, and the gasket is sleeved on the screw rod.
[0008] The gas plastic pipe self-locking type leaking stoppage device in the application, wherein the locking nut comprises a key-shaped nut and a dovetail nut, the key-shaped nut and the dovetail nut are threadedly connected to the screw rod, and the key-shaped nut is arranged close to the gasket.
[0009] The gas plastic pipe self-locking type leaking stoppage device in the application, wherein a key-shaped handle is fixedly arranged on the second end of the screw rod.
[0010] The use method of the gas plastic pipe self-locking type leaking stoppage device in the application comprises the following steps.
[0011] The first step is to fix the screw rod, rotate the limiting nut, move the limiting nut to the position close to the first end of the screw rod, rotate the positioning card, move the positioning card close to the limiting nut until the two abut each other, then rotate the locking nut, move the locking nut close to the second end of the screw rod by a certain distance, then move the rubber plug close to the locking nut until the two abut each other, and the rubber plug and the positioning card have enough space for the two clamping plates of the positioning card to rotate towards the rubber plug,
[0012] The second step is to rotate the two clamping plates of the positioning card towards the rubber plug, make the torsional spring tight, until the positioning card can pass through the leakage hole of the gas plastic pipe and enter the gas plastic pipe, apply an external force to keep the positioning card in this state, move the leaking stoppage device to the leakage hole of the gas plastic pipe, sequentially pass the first end of the screw rod, the limiting nut and the positioning card through the leakage hole and extend into the gas plastic pipe, when the positioning card enters the gas plastic pipe, the external force applied to the positioning card disappears, at this time, the torsional spring is relaxed, under the action of the torsional spring, the two clamping plates of the positioning card rotate away from each other towards the rubber plug until the two clamping plates abut each other at the opposite ends,
[0013] The third step is to pull the screw rod towards the outside of the gas plastic pipe, make the two clamping plates of the positioning card abut on the inner walls of the gas plastic pipe on the opposite sides of the leakage hole, then move the rubber plug close to the leakage hole until the tapered end of the rubber plug is clamped in the leakage hole, then fix the screw rod and rotate the locking nut, move the locking nut close to the rubber plug until the two abut each other, tighten the locking nut, and the sealing of the leakage hole is completed.
[0014] In the use method, in the first step, the specific steps of rotating the locking nut and moving the locking nut close to the second end of the screw rod by a certain distance are: first, rotate the dovetail nut and move the dovetail nut close to the second end of the screw rod by a certain distance, then rotate the key-shaped nut and move the key-shaped nut close to the dovetail nut until the two abut each other.
[0015] In the use method, in the first step, the specific steps of moving the rubber plug close to the locking nut until the two abut each other are: move the rubber plug and the gasket close to the key-shaped nut until the gasket abuts the key-shaped nut and the rubber plug abuts the gasket.
[0016] The specific steps for moving the locking nut close to the rubber plug until the two abut each other in the third step of the use method in the application are: first, rotating the plum blossom nut to move the plum blossom nut close to the rubber plug until the gasket and the rubber plug abut each other, the plum blossom nut and the gasket abut each other, and the plum blossom nut is tightened, then rotating the dovetail nut to move the dovetail nut close to the plum blossom nut until the two abut each other, and the dovetail nut is tightened.
[0017] The difference between the application and the prior art is that, in the initial state, the two opposite ends of the two clamping plates abut each other under the action of the torsional spring, i.e., the positioning clamps are in the open state, then the two clamping plates are rotated to move close to the rubber plug, i.e., the positioning clamps change from the open state to the closed state, in this process, the torsional spring is tightened, then the first end of the screw rod, the limiting nut and the positioning clamps in the closed state extend into the gas plastic pipe from the leakage hole of the gas plastic pipe, after the positioning clamps enter the gas plastic pipe, the torsional spring is loosened, under the action of the torsional spring, the two clamping plates are rotated to move away from the rubber plug, i.e., the positioning clamps change from the closed state to the open state again, then the screw rod is pulled out of the gas plastic pipe to make the two clamping plates abut the inner wall of the gas plastic pipe, then the tapered end of the rubber plug is clamped in the leakage hole of the gas plastic pipe, finally, the locking nut abuts the rubber plug and is tightened, thereby completing the plugging of the leakage hole. As can be seen, the application will not cause secondary damage to the gas plastic pipe, and is convenient to install and fixedly reliable, and can realize efficient plugging of the leakage point. It should be noted that, in use, the limiting nut, the positioning clamps and the rubber plug matched with the size of the leakage hole can be selected to make the limiting nut and the positioning clamps in the closed state enter the gas plastic pipe through the leakage hole, and the tapered end of the rubber plug can be clamped in the leakage hole.
[0018] The application will be further described below with reference to the drawings. SCHEMATIC DRAWINGS
[0019] Figure 1 It is a front view of the gas plastic pipe self-locking type leak stoppage device in the application (the positioning clamps are in the open state);
[0020] Figure 2 It is a front view of the positioning clamps in the open state in the application;
[0021] Figure 3 It is a top view of Figure 2 ;
[0022] Figure 4 It is an enlarged view of A in Figure 3 ;
[0023] Figure 5 It is a front view of Figure 4Structure diagram of middle base;
[0024] Figure 6 For Figure 5 top view (also bottom view);
[0025] Figure 7 For Figure 5 left view (also right view);
[0026] Figure 8 For Figure 2 view after hiding front side first side plate and front side second side plate;
[0027] Figure 9 For Figure 8 local enlarged view at B;
[0028] Figure 10 For front view of second clamping plate when positioning clamp in the application is in open state;
[0029] Figure 11 For Figure 10 top view;
[0030] Figure 12 For front view of first clamping plate when positioning clamp in the application is in open state;
[0031] Figure 13 For Figure 12 top view;
[0032] Figure 14 For front view of positioning clamp in the application in closed state;
[0033] Figure 15 For main view of gas plastic pipe self-locking type leaking stoppage device in the application (positioning clamp in closed state);
[0034] Figure 16 For Figure 1 use state of gas plastic pipe self-locking type leaking stoppage device in the application ;
[0035] Figure 17 For Figure 2 use state of gas plastic pipe self-locking type leaking stoppage device in the application ;
[0036] Figure 18 For Figure 3 use state of gas plastic pipe self-locking type leaking stoppage device in the application ;
[0037] Figure 19 For Figure 4 use state of gas plastic pipe self-locking type leaking stoppage device in the application .
[0038] In the figure:
[0039] 01, plum blossom handle; 02, screw rod; 03, dovetail nut; 04, plum blossom nut; 05, gasket; 06, rubber plug; 07, positioning card; 08, limiting nut; 09, second clamping plate; 10, second side plate; 11, hinged shaft; 12, first clamping plate; 13, first side plate; 14, second bottom plate; 15, first bottom plate; 16, torsional spring; 17, base; 18, cylindrical cavity of base; 19, second hinged hole; 20, notch of second bottom plate; 21, first hinged hole; 22, notch of first bottom plate; 23, gas plastic pipe; 24, leakage hole. DETAILED DESCRIPTION
[0040] As shown in Figure 1 in combination with Figures 2-15 , the gas plastic pipe self-locking type leakage blocking device in the present application comprises a screw rod 02, both ends of the screw rod 02 are a first end and a second end respectively, the first end is a vertically arranged lower end of the screw rod 02 as shown in Figure 1 , 15 , the second end is a vertically arranged upper end of the screw rod 02 as shown in Figure 1 , 15 , a limiting nut 08, a positioning card 07, a rubber plug 06 and a locking nut are sequentially arranged on the screw rod 02 along the direction from the first end to the second end (i.e. the direction from bottom to top as shown in Figure 1 , 15 ), the limiting nut 08, the positioning card 07 and the locking nut are respectively threadedly connected on the screw rod 02, the rubber plug 06 is sleeved on the screw rod 02, the end of the rubber plug 06 towards the positioning card 07 is tapered, the positioning card 07 comprises a base 17, the base 17 is threadedly connected on the screw rod 02, opposite sides of the base 17 are respectively hinged with a clamping plate, a torsional spring 16 is arranged on the base 17, both ends of the torsional spring 16 are respectively abutted on the two clamping plates, when both the clamping plates are rotated towards each other in the direction of the rubber plug 06 (i.e. the upper direction as shown in Figure 1 , 15 ), the torsional spring 16 is tightened, when both the clamping plates are rotated away from each other in the direction away from the rubber plug 06 (i.e. the lower direction as shown in Figure 1 , 15 ), the torsional spring 16 is relaxed until the opposite ends of the two clamping plates abut each other.
[0041] The position where the outer diameter of the tapered end of the rubber plug 06 is closer to the positioning card 07 is smaller, i.e. the tapered end is a tapered end with a small lower end and a large upper end as shown in Figure 1 , 15 , the design is to enable the tapered end to be smoothly inserted into the leakage hole 24 of the gas plastic pipe 23 and clamped therewith (at this time, the small end of the tapered end enters into the gas plastic pipe 23, and the large end is located outside the gas plastic pipe 23), i.e. to block the leakage hole 24.
[0042] The two opposite ends of the two clamping plates abutting against each other means that the end of one clamping plate hinged to the base 17 and the end of the other clamping plate hinged to the base 17 abut against each other. After the two opposite ends of the two clamping plates abut against each other, the two clamping plates will not move away from each other in the direction away from the rubber plug 06.
[0043] Since the limiting nut 08, the positioning clamp 07 and the locking nut are respectively threadedly connected on the screw rod 02, when the limiting nut 08, the positioning clamp 07 and the locking nut rotate relative to the screw rod 02, the limiting nut 08, the positioning clamp 07 and the locking nut can move along the axial direction of the screw rod 02. The rubber plug 06 is sleeved on the screw rod 02, and there is a gap between the two, and the rubber plug 06 can move along the axial direction of the screw rod 02.
[0044] As shown in Figures 3-9 The gas plastic pipe self-locking type leaking stoppage device in the application, wherein the base 17 is in a cylindrical shape, the inner cylinder wall of the base 17 is provided with an inner thread matched with the screw rod 02, the base 17 is threadedly connected on the screw rod 02 through the inner thread, the screw rod 02 passes through the cylinder cavity 18 of the base 17, the outer cylinder wall of the base 17 is fixedly provided with two oppositely arranged hinged shafts 11, the two hinged shafts 11 are coaxial and perpendicular to the axis of the base 17, the two clamping plates are respectively a first clamping plate 12 and a second clamping plate 09, one end of the first clamping plate 12 is hinged on the two hinged shafts 11, one end of the second clamping plate 09 is also hinged on the two hinged shafts 11, the two side faces of the first clamping plate 12 and the second clamping plate 09 respectively face the rubber plug 06 and the limiting nut 08, the torsional spring 16 is sleeved on at least one of the two hinged shafts 11, and the two ends of the torsional spring 16 respectively abut against the side faces of the first clamping plate 12 and the second clamping plate 09 facing the rubber plug 06.
[0045] Since the two ends of the torsional spring 16 abut against the side faces of the first clamping plate 12 and the second clamping plate 09 facing the rubber plug 06, when the first clamping plate 12 and the second clamping plate 09 both rotate towards the rubber plug 06, the first clamping plate 12 and the second clamping plate 09 can simultaneously push the two ends of the torsional spring 16 to move towards each other, and the torsional spring 16 is tightened, and the positioning clamp 07 reaches the closed state, as shown in Figure 14 , 15When the first clamping plate 12 and the second clamping plate 09 are both rotated away from each other in the direction away from the rubber plug 06, the torsion spring 16 is relaxed, that is to say, when the positioning clamping 07 reaches the closed state and no external force is applied to the positioning clamping 07, the torsion spring 16 is relaxed, and then the two ends of the torsion spring 16 apply a pushing force to the side of the first clamping plate 12 and the second clamping plate 09 facing the rubber plug 06, and the first clamping plate 12 and the second clamping plate 09 are both rotated away from each other in the direction away from the rubber plug 06 under the action of the pushing force of the torsion spring 16 until the opposite ends of the first clamping plate 12 and the second clamping plate 09 abut, and the first clamping plate 12 and the second clamping plate 09 no longer rotate, at which time the positioning clamping 07 reaches the open state, as shown in Figure 1 、 2 When the positioning clamping 07 reaches the open state, the torsion spring 16 is still in a state of being twisted to a certain extent, that is to say, the torsion spring 16 can still apply a certain pushing force to the first clamping plate 12 and the second clamping plate 09, so that the positioning clamping 07 can be kept in the open state. It can also be said that if no external force is applied to the positioning clamping 07, the positioning clamping 07 is in the open state under the action of the torsion spring 16, that is to say, the initial state of the positioning clamping 07 is the open state. When the initial state of the positioning clamping 07 is the open state, the torsion spring 16 is also in the initial state, at which time the torsion spring 16 is in a state of being twisted to a certain extent, so that the initial state of the positioning clamping 07 can be kept in the open state.
[0046] As shown in Figures 1-9 , 12-15, the gas plastic pipe self-locking type plugging device in the application, wherein the first clamping plate 12 comprises a first bottom plate 15 and two first side plates 13, the two side surfaces of the first bottom plate 15 respectively face the rubber plug 06 and the limiting nut 08, and the two side surfaces of the first bottom plate 15 are the two side surfaces of the first clamping plate 12, thereby realizing the above-mentioned that the two side surfaces of the first clamping plate 12 respectively face the rubber plug 06 and the limiting nut 08, the two first side plates 13 are oppositely arranged on the side surface of the first bottom plate 15 facing the rubber plug 06, and the first bottom plate 15 and the two first side plates 13 jointly form a first U-shaped structure. One end of each of the two first side plates 13 is hingedly connected to one of the two hinge shafts 11, and the base 17 is located in the first U-shaped structure.
[0047] The end of each of the two first side plates 13 close to the base 17 is provided with a first hinge hole 21, and each of the two first side plates 13 is hingedly connected to one of the two hinge shafts 11 through the respective first hinge hole, as shown in Figure 8 The base 17 is located between the two first side plates 13, and the end of the first bottom plate 15 close to the base 17 is located below the base 17, so that the base 17 is located in the first U-shaped structure jointly formed by the two first side plates 13 and the first bottom plate 15.
[0048] As shown in Figures 1-11As shown in Figures 14-15, the second clamping plate 09 includes a second base plate 14 and two second side plates 10. The two sides of the second base plate 14 face the rubber plug 06 and the limiting nut 08, respectively. These two sides of the second base plate 14 are the two sides of the second clamping plate 09, thus achieving the aforementioned configuration where the two sides of the second clamping plate 09 face the rubber plug 06 and the limiting nut 08, respectively. The two second side plates 10 are arranged opposite each other on the sides of the second base plate 14 facing the rubber plug 06. The second base plate 14 and the two second side plates 10 together form a second U-shaped structure. One end of each of the two second side plates 10 is hinged to two hinge shafts 11. Both first side plates 13 are located between the two second side plates 10. The base 17 is located within the second U-shaped structure.
[0049] Each of the two second side plates 10 has a second hinge hole 19 near the base 17. The two second side plates 10 are respectively hinged to two hinge shafts 11 through their respective hinge holes. Figure 8 As shown, the base 17 is located between the two second side plates 10, and the end of the second bottom plate 14 near the base 17 is located below the base 17. Therefore, the base 17 is located within the second U-shaped structure formed by the two second side plates 10 and the second bottom plate 14.
[0050] When installing the positioning clip 07, first, the torsion spring 16 is fitted onto the hinge shaft 11. Then, the two first side plates 13 of the first clip plate 12 are respectively hinged onto the two hinge shafts 11. Next, the two second side plates 10 of the second clip plate 09 are respectively hinged onto the two hinge shafts 11, with the two ends of the torsion spring 16 abutting against the sides of the first base plate 15 and the second base plate 14 facing the rubber plug 06. The distance between the two second side plates 10 is greater than the distance between the two first side plates 13. This allows the first clip plate 12 to be installed first, followed by the second clip plate 09, and ensures that both first side plates 13 are positioned between the two second side plates 10.
[0051] like Figures 5-7 As shown, the two hinge shafts 11 are arranged coaxially and perpendicular to the axis of the base 17. Figure 8 , 9 As shown, the distance from the second base plate 14 to the axis of the hinge shaft 11 must be less than or equal to the distance from the first base plate 15 to the axis of the hinge shaft 11. Figure 3 , 4 As shown, torsion springs 16 are fitted on both hinge shafts 11. The two ends of the torsion springs 16 abut against the sides of the first base plate 15 and the second base plate 14 facing the rubber plug 06, respectively. When the opposite ends of the two plates abut against each other, the end of the second base plate 14 near the base 17 abuts against the first base plate 15 and / or the ends of the two first side plates 13 near the base 17, thus combining... Figure 11 , 13As shown, the first bottom plate 15 and the second bottom plate 14 are provided with slots 22, 20 for the screw rod 02 to pass through at the end close to the base 17.
[0052] The distance from the second bottom plate 14 to the axis of the hinge shaft 11 is less than or equal to the distance from the first bottom plate 15 to the axis of the hinge shaft 11, so that the opposite ends of the two clamping plates can abut each other, that is, the end of the first clamping plate 12 hinged to the base 17 and the end of the second clamping plate 09 hinged to the base 17 can abut each other, because if Figure 3 、 4 As shown, the two second side plates 10 of the second clamping plate 09 are located outside the two first side plates 13 of the first clamping plate 12, and if the distance from the second bottom plate 14 of the second clamping plate 09 to the axis of the hinge shaft 11 is less than or equal to the distance from the first bottom plate 15 of the first clamping plate 12 to the axis of the hinge shaft 11, as shown in Figure 8 、 9 When the second clamping plate 09 hinged to the base 17 meets the second clamping plate 09 hinged to the base 17 during the process of the positioning clamp 07 changing from the closed state to the open state, the end of the second bottom plate 14 close to the base 17 can abut the end of the first bottom plate 15 and / or the two first side plates 13 close to the base 17, so that the opposite ends of the two clamping plates can abut each other.
[0053] After the opposite ends of the two clamping plates abut each other, the positioning clamp 07 is screwed onto the screw rod 02, and the positioning clamp 07 is screwed onto the first end of the screw rod 02 through the base 17. The first end of the screw rod 02 reaches the first bottom plate 15 and the second bottom plate 14 after passing through the cylinder cavity 18 of the base 17. In order not to hinder the first end of the screw rod 02 passing through the first bottom plate 15 and the second bottom plate 14, a slot 22 is provided at the end of the first bottom plate 15 close to the base 17 for the first end of the screw rod 02 to pass through, and a slot 20 is also provided at the end of the second bottom plate 14 close to the base 17 for the first end of the screw rod 02 to pass through. The two slots 22, 20 are oppositely arranged and together form an approximately circular through hole, so that the first end of the screw rod 02 can pass through the first bottom plate 15 and the second bottom plate 14. In this way, the screw rod 02 can pass through the positioning clamp 07, and the positioning clamp 07 is screwed onto the screw rod 02.
[0054] As mentioned earlier, the two sides of the first bottom plate 15 are the two sides of the first clamping plate 12, and the two sides of the second bottom plate 14 are the two sides of the second clamping plate 09, so when the two ends of the torsion spring 16 abut the sides of the first bottom plate 15 and the second bottom plate 14 facing the rubber plug 06, it can also be said that the two ends of the torsion spring 16 abut the sides of the first clamping plate 12 and the second clamping plate 09 facing the rubber plug 06.
[0055] The torsion spring 16 is a prior art, which belongs to a spiral spring, so it can be sleeved on the hinge shaft 11, and the specific structure and working principle will not be described again.
[0056] As shown in Figure 1 、 15 The gas plastic pipe self-locking type leaking stoppage device in the application, wherein the rubber plug 06 and the locking nut are provided with a gasket 05, and the gasket 05 is sleeved on the screw rod 02. The gasket 05 is a metal gasket, which has a gap with the screw rod 02, and the gasket 05 can move along the axial direction of the screw rod 02. The end of the rubber plug 06 close to the locking nut is columnar, the gasket 05 is a circular gasket, and the area of the gasket 05 is equal to the area of the columnar end of the rubber plug 06. In this way, the locking nut can lock the rubber plug 06 through the gasket 05, and the locking effect is better by setting the gasket 05 to apply locking force to the columnar end of the rubber plug 06.
[0057] The gas plastic pipe self-locking type leaking stoppage device in the application, wherein the locking nut includes a key nut 04 and a dovetail nut 03, and the key nut 04 and the dovetail nut 03 are both threadedly connected to the screw rod 02, and the key nut 04 is arranged close to the gasket 05. The reason for setting the locking nut as two, namely the key nut 04 and the dovetail nut 03, is to enhance the locking function.
[0058] The gas plastic pipe self-locking type leaking stoppage device in the application, wherein the second end of the screw rod 02 is fixedly provided with a key handle 01. The key handle 01 is added to facilitate the staff to hold and operate the screw rod 02.
[0059] When installing the gas plastic pipe self-locking type leaking stoppage device in the application, the dovetail nut 03 and the key nut 04 are first screwed from the first end of the screw rod 02 to the screw rod 02, and then the gasket 05 and the rubber plug 06 are sleeved from the first end of the screw rod 02 to the screw rod 02, and finally the positioning card 07 and the limiting nut 08 are screwed from the first end of the screw rod 02 to the screw rod 02. The limiting nut 08 is used to prevent the positioning card 07 from slipping off from the first end of the screw rod 02.
[0060] For the two first side plates 13 of the first clamping plate 12 and the two second side plates 10 of the second clamping plate 09, the end of the torsion spring 16 can be prevented from slipping off from the first clamping plate 12 and the second clamping plate 09. Figure 14 、 15As shown, when the positioning card 07 is in the closed state, the first clamping plate 12 can enter into the second clamping plate 09, that is, the two first side plates 13 completely enter between the two second side plates 10, and the positioning card 07 is in a linear type at this time, which is convenient for entering the leakage hole 24, and at this time, the screw rod 02 is located in the first U-shaped structure of the first clamping plate 12 and also located in the second U-shaped structure of the second clamping plate 09.
[0061] The use method of the above-mentioned gas plastic pipe self-locking type leakage stop device in the application comprises the following steps:
[0062] The first step, as shown in Figure 1 , 15 , fix the screw rod 02, rotate the limiting nut 08, move the limiting nut 08 to the position close to the first end of the screw rod 02, rotate the positioning card 07, move the positioning card 07 close to the limiting nut 08 until the two abut, then rotate the locking nut, move the locking nut close to the second end of the screw rod 02 by a certain distance, then move the rubber plug 06 close to the locking nut until the two abut, and make the rubber plug 06 and the positioning card 07 have enough space for the two clamping plates of the positioning card 07 to rotate towards the rubber plug 06.
[0063] The second step, rotate the two clamping plates of the positioning card 07 towards the rubber plug 06, make the torsional spring 16 tight, until the positioning card 07 can pass through the leakage hole 24 of the gas plastic pipe 23 and enter into the gas plastic pipe 23, as shown in Figure 15 , 16 , at this time, the positioning card 07 is in the closed state. Apply external force to keep the positioning card 07 in this state, the worker holds the positioning card 07 with his hand to keep this state, move the leakage stop device to the leakage hole 24 of the gas plastic pipe 23, sequentially pass the first end of the screw rod 02, the limiting nut 08 and the positioning card 07 through the leakage hole 24 and extend into the gas plastic pipe 23, when the positioning card 07 enters into the gas plastic pipe 23, the external force applied on the positioning card 07 disappears, that is, the worker no longer holds the positioning card 07 with his hand, at this time, the torsional spring 16 relaxes, under the action of the torsional spring 16, the two clamping plates of the positioning card 07 rotate away from each other towards the rubber plug 06, until the two ends of the two clamping plates abut each other, at this time, the positioning card 07 is in the open state, as shown in Figure 17 .
[0064] The third step, as shown in Figure 18As shown, pull the screw rod 02 outward to the gas plastic pipe 23, so that the two clamping plates of the positioning clamp 07 abut on the inner wall of the gas plastic pipe 23 on the opposite sides of the leakage hole 24, then move the rubber plug 06 close to the leakage hole 24 until the tapered end of the rubber plug 06 is clamped in the leakage hole 24, then fix the screw rod 02 and rotate the locking nut, move the locking nut close to the rubber plug 06 until the two abut, and tighten the locking nut, that is, the plugging of the leakage hole 24 is completed, as shown in Figure 19
[0065] The use method in the application, wherein in the first step, the specific steps of rotating the locking nut and moving the locking nut close to the second end of the screw rod 02 by a certain distance are: first, rotate the dovetail nut 03 and move the dovetail nut 03 close to the second end of the screw rod 02 by a certain distance, then rotate the key nut 04 and move the key nut 04 close to the dovetail nut 03 until the two abut.
[0066] The use method in the application, wherein in the first step, the specific steps of moving the rubber plug 06 close to the locking nut until the two abut are: move the rubber plug 06 and the gasket 05 together close to the key nut 04 until the gasket 05 abuts with the key nut 04 and the rubber plug 06 abuts with the gasket 05.
[0067] The use method in the application, wherein in the third step, the specific steps of rotating the locking nut, moving the locking nut close to the rubber plug 06 until the two abut, and tightening the locking nut are: first, rotate the key nut 04 and move the key nut 04 close to the rubber plug 06 until the gasket 05 abuts with the rubber plug 06 and the key nut 04 abuts with the gasket 05, then tighten the key nut 04, then rotate the dovetail nut 03 and move the dovetail nut 03 close to the key nut 04 until the two abut, and tighten the dovetail nut 03.
[0068] Since the leakage hole 24 on the gas plastic pipe 23 can be located at any position in the circumferential direction of the gas plastic pipe 23, in actual use, the screw rod 02 has three arrangement modes, the first mode is arranged in the horizontal direction, the second mode is that the first end is downward and the second end is upward, and the third mode is that the first end is upward and the second end is downward.
[0069] As shown in Figures 16-19 The difference between the present application and the prior art is that, in the present application, in the initial state, the two clamping plates are in abutment with each other under the action of the torsional spring 16, i.e., the positioning clamps 07 are in an open state, then the two clamping plates are rotated towards each other in the direction of the rubber plug 06, i.e., the positioning clamps 07 change from the open state to a closed state, in this process, the torsional spring 16 is tightened, then the first end of the screw rod 02, the limiting nut 08 and the positioning clamps 07 in the closed state extend into the gas plastic pipe 23 from the leakage hole 24 of the gas plastic pipe 23, after the positioning clamps 07 enter the gas plastic pipe 23, the torsional spring 16 is loosened, under the action of the torsional spring 16, the two clamping plates are rotated away from each other in the direction away from the rubber plug 06, i.e., the positioning clamps 07 change from the closed state to the open state again, then the screw rod 02 is pulled outwards of the gas plastic pipe 23, so that the two clamping plates abut against the inner wall of the gas plastic pipe 23, then the tapered end of the rubber plug 06 is clamped in the leakage hole 24 of the gas plastic pipe 23, finally, the locking nut abuts against the rubber plug 06 and is tightened, thereby completing the plugging of the leakage hole 24. As can be seen, the present application will not cause secondary damage to the gas plastic pipe 23, and is convenient to install and fixedly reliable, and can realize efficient plugging of the leakage point. It should be noted that, in use, the limiting nut 08, the positioning clamps 07 and the rubber plug 06 can be selected according to the size of the leakage hole 24, so that the limiting nut 08 and the positioning clamps 07 in the closed state can enter the gas plastic pipe 23 through the leakage hole 24, and the tapered end of the rubber plug 06 can be clamped in the leakage hole 24.
[0070] It should be noted that the terms "center", "upper", "lower", "front", "rear", "left", "right", "middle" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0071] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0072] The above-described embodiments are merely intended to describe the preferred embodiments of the present application, and are not intended to limit the scope of the present application. Various modifications and improvements to the present application made by those skilled in the art are intended to fall within the scope of the present application defined in the claims.
Claims
1. A self-locking leak-sealing device for gas-fired plastic pipes, characterized in that: The utility model provides a screw rod, the both ends of screw rod are first end and second end respectively, is equipped with limiting nut, positioning card, rubber plug and locking nut in proper order on screw rod along the direction from first end to second end, limiting nut, positioning card and locking nut are respectively screwed on screw rod, rubber plug is set on screw rod, the one end of rubber plug is tapered towards positioning card, positioning card includes base, base is screwed on screw rod, the opposite sides of base are hinged with a clamping plate respectively, is equipped with torsion spring on base, the both ends of torsion spring are abutted on two clamping plates respectively, when two clamping plates are mutually close in the direction of rubber plug and rotate, torsion spring is tightened, when two clamping plates are mutually far away in the direction of rubber plug and rotate, torsion spring is relaxed until the opposite ends of two clamping plates abut each other.
2. The self-locking gas plastic pipe plugging device according to claim 1, characterized in that: The base is cylindrical, the inner cylinder wall of the base is provided with an internal thread matched with the screw rod, the base is screwed on the screw rod through the internal thread, the outer cylinder wall of the base is provided with two oppositely arranged hinge shafts, the two clamping plates are a first clamping plate and a second clamping plate, one end of the first clamping plate is hinged on the two hinge shafts, one end of the second clamping plate is also hinged on the two hinge shafts, the two side faces of the first clamping plate and the second clamping plate are respectively towards the rubber plug and the limiting nut, at least one of the two hinge shafts is sleeved with the torsion spring, the two ends of the torsion spring are respectively abutted on the side faces of the first clamping plate and the second clamping plate towards the rubber plug.
3. The self-locking gas plastic pipe plugging device according to claim 2, characterized in that: The first clamping plate includes a first bottom plate and two first side plates, the two side faces of the first bottom plate are respectively towards the rubber plug and the limiting nut, the two first side plates are oppositely arranged on the side face of the first bottom plate towards the rubber plug, the first bottom plate and the two first side plates jointly form a first U-shaped structure, one end of each of the two first side plates is hinged on the two hinge shafts, the base is located in the first U-shaped structure, the second clamping plate includes a second bottom plate and two second side plates, the two side faces of the second bottom plate are respectively towards the rubber plug and the limiting nut, the two second side plates are oppositely arranged on the side face of the second bottom plate towards the rubber plug, the second bottom plate and the two second side plates jointly form a second U-shaped structure, one end of each of the two second side plates is hinged on the two hinge shafts, the two first side plates are both located between the two second side plates, the base is located in the second U-shaped structure, the two hinge shafts are coaxial and perpendicular to the axis of the base, the distance from the second bottom plate to the axis of the hinge shaft is less than or equal to the distance from the first bottom plate to the axis of the hinge shaft, the torsion spring is sleeved on each of the two hinge shafts, the two ends of the torsion spring are respectively abutted on the side faces of the first bottom plate and the second bottom plate towards the rubber plug, when the opposite ends of the two clamping plates abut each other, the end of the second bottom plate close to the base abuts against the end of the first bottom plate and / or the two first side plates close to the base, the end of the first bottom plate and the second bottom plate close to the base are both provided with a slot for the screw rod to pass through.
4. The self-locking gas plastic pipe plugging device according to claim 3, characterized in that: A gasket is provided between the rubber plug and the locking nut, and the gasket is sleeved on the screw rod.
5. The self-locking gas plastic pipe plugging device according to claim 4, characterized in that: The locking nuts include a wrench nut and a dovetail nut, both of which are threadedly connected to the screw rod, and the wrench nut is arranged close to the gasket.
6. The self-locking gas plastic pipe plugging device according to claim 5, characterized in that: A wrench handle is fixed to the second end of the screw rod.
7. A method of using the self-locking leak stoppage device for gas plastic pipe according to any one of claims 1-6, characterized in that, The method comprises the following steps: In the first step, the screw rod is fixed, the limiting nut is rotated to move to a position close to the first end of the screw rod, the positioning clamp is then rotated to move close to the limiting nut until the two abut each other, the locking nut is then rotated to move a certain distance close to the second end of the screw rod, and the rubber plug is then moved close to the locking nut until the two abut each other, so that the positioning clamp has enough space between the rubber plug to rotate the two clamping plates of the positioning clamp towards the rubber plug, In the second step, the two clamping plates of the positioning clamp are rotated towards the rubber plug to make the torsional spring tight until the positioning clamp can pass through the leakage hole of the plastic gas pipe and enter the plastic gas pipe, an external force is applied to keep the positioning clamp in this state, the plugging device is moved to the leakage hole of the plastic gas pipe, the first end of the screw rod, the limiting nut and the positioning clamp are sequentially inserted into the plastic gas pipe through the leakage hole, and when the positioning clamp enters the plastic gas pipe, the external force applied to the positioning clamp disappears, at this time, the torsional spring is relaxed, and the two clamping plates of the positioning clamp are rotated away from each other under the action of the torsional spring until the two clamping plates abut each other at the opposite ends, In the third step, the screw rod is pulled towards the outside of the plastic gas pipe, the two clamping plates of the positioning clamp abut on the inner walls of the plastic gas pipe on the opposite sides of the leakage hole, the rubber plug is then moved close to the leakage hole until the tapered end of the rubber plug is clamped in the leakage hole, the screw rod is then fixed and the locking nut is rotated to move the locking nut close to the rubber plug until the two abut each other, and the locking nut is tightened, thereby completing the plugging of the leakage hole.
8. The method of use of claim 7, wherein, In the first step, the locking nut is rotated to move a certain distance close to the second end of the screw rod, and the specific steps are as follows: the dovetail nut is first rotated to move a certain distance close to the second end of the screw rod, and then the wrench nut is rotated to move close to the dovetail nut until the two abut each other.
9. The method of use of claim 8, wherein, In the first step, the rubber plug is moved close to the locking nut until the two abut each other, and the specific steps are as follows: the rubber plug and the gasket are moved close to the wrench nut until the gasket abuts the wrench nut and the rubber plug abuts the gasket.
10. The method of use of claim 9, wherein, In the third step, the locking nut is rotated to move close to the rubber plug until the two abut each other, and the specific steps of tightening the locking nut are as follows: the wrench nut is first rotated to move close to the rubber plug until the gasket abuts the rubber plug and the wrench nut abuts the gasket, the wrench nut is tightened, and then the dovetail nut is rotated to move close to the wrench nut until the two abut each other, and the dovetail nut is tightened.