Polyethylene plastic-coated rapid sealing cover for inner wall of marine pipe fitting

Abstract

The utility model belongs to the field of marine pipe fitting inner wall polyethylene plastic coating, and particularly relates to a marine pipe fitting inner wall polyethylene plastic coating rapid sealing cover. A fast polyethylene plastic-coated sealing cover for the inner wall of a marine pipe fitting is characterized by comprising a sealing cover body used for sealing the flange end (100) of the plastic-coated pipe fitting and a sealing clamping device arranged on the sealing cover body. The sealing cover and the port of the flange end (100) are attached and sealed through the sealing clamping device. The sealing clamping device is further provided with an operation handle of the sealing clamping device. By pushing and pulling the operating handle, the sealing cover and the port of the flange end (100) are locked and fixed through the sealing clamping device. The marine pipe fitting inner wall polyethylene plastic coating rapid sealing cover can be rapidly and accurately installed, the construction safety of pipe fitting inner wall polyethylene plastic coating cooling operation is guaranteed, the quality of pipe fitting inner wall polyethylene plastic coating products is improved, and the production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the field of polyethylene plastic coating on the inner wall of a marine pipe fitting, and particularly relates to a polyethylene plastic coating quick sealing cap on the inner wall of a marine pipe fitting. Background Art

[0002] During the polyethylene coating process for the inner wall of marine pipe fittings, the pipe fittings are heated and transferred to the polyethylene coating equipment for coating. One end of the pipe fitting is connected to the powder box of the polyethylene coating equipment through a hydraulic clamping device, and the other end needs to be manually installed with a cover to seal the inner wall space of the pipe fitting to ensure that the polyethylene powder will not leak out of the pipe fitting during the rotational molding operation of the equipment.

[0003] The polyethylene plastic-coated caps on the inner walls of traditional marine pipe fittings in the existing technology are fixed by three-point tightening positioning pins on a circular mold plate, which requires the coordinated operation of more than two people. Bolt tightening is time-consuming and has low production efficiency. After the cap is fitted on the flange surface at the end of the pipe fitting, three bolt tightening operations need to be completed in succession. The operation time is relatively long. Affected by the locking force of the three-point tightening positioning, the cap is easily deformed, resulting in a loose closure of the pipe fitting mouth, and powder leakage is likely to occur during the rotational molding process. After the temperature of the plastic-coated pipe fitting reaches 250℃-300℃, the pipe fitting is preheated and transferred to the plastic coating equipment. After one end of the pipe fitting is clamped and fixed, multiple people are required to coordinate and install the cap on the other end of the pipe fitting. Since there are many fastening points on the cap, manual close operation is very likely to cause safety accidents such as burns. Complex capping and sealing operations are prone to construction hazards. Summary of the Invention

[0004] The present invention solves the problems of the polyethylene plastic-coated quick sealing cap for the inner wall of marine pipe fittings in the prior art, which is fixed by the three-point tightening positioning pins of the circular mold plate and requires the coordinated operation of multiple people. After the sealing cap is affixed to the flange surface of the pipe fitting end, three bolt tightening operations need to be completed continuously, and the operation time is relatively long. Due to the influence of different locking forces of the three-point tightening positioning, the sealing cap is easily deformed, resulting in a loose closure of the pipe fitting mouth, powder leakage during the rotational molding process, uneven coating thickness and other quality problems. In this case, it is unsafe to perform the sealing operation. A polyethylene plastic-coated quick sealing cap for the inner wall of marine pipe fittings is provided, which is characterized in that it includes: a sealing cover for sealing the flange end of the plastic-coated pipe fitting and a sealing clamping device arranged on the sealing cover; the sealing clamping device seals the sealing cover with the flange end port; the sealing clamping device is also provided with an operating handle of the sealing clamping device; the sealing clamping device is used to lock and fix the sealing cover with the flange end port by pushing and pulling the operating handle.

[0005] According to the above-mentioned polyethylene plastic-coated quick sealing cover for the inner wall of the marine pipe fitting, it is characterized in that the sealing cover includes: a mold plate, which is used to seal the flange end of the plastic-coated pipe fitting; the sealing clamping device includes: a quick clamp fixing connecting rod welding part, on which one end of the connecting rod is hinged; the other end of the connecting rod is hinged to a support welding assembly; the support welding assembly is hinged to a pressure block; the support welding assembly and the pressure block form a clamping claw, and under the drive of the connecting rod, the support welding assembly and the pressure block clamp the mold plate and the flange end.

[0006] According to the above-mentioned polyethylene plastic-coated quick sealing cover for the inner wall of marine pipe fittings, the characteristic is that the quick clamp fixing connecting rod welding part includes: a cover-like structure, and connecting parts are evenly fixed at equal angles around the cover-like structure; the connecting parts are hinged to the connecting rod.

[0007] The polyethylene plastic-coated quick sealing cover for the inner wall of a marine pipe described above is characterized in that the cover-like structure is circular; the connecting piece is a strip-shaped structural piece, each of which is provided with a hinge hole; the support welding assembly is a sheet metal structure with a concave cross-section; a hinge through hole is provided on its side wall; and a connecting hole is provided on the pressing block.

[0008] According to the above-mentioned polyethylene plastic-coated quick sealing cover for the inner wall of a marine pipe, it is characterized in that the connecting rod includes a first connecting rod, a second connecting rod, a third connecting rod, and a fourth connecting rod; one end of the first connecting rod is hinged to a connecting piece; the middle part of the first connecting rod is hinged to one end of the second connecting rod; the other end of the second connecting rod is hinged to the first hinge through hole of the support welding assembly; the other end of the second connecting rod is hinged to one end of the fourth connecting rod; a strip through hole is provided in the middle part of the fourth connecting rod, and the strip through hole is hinged to the second hinge through hole and the third hinge through hole of the support welding assembly; the other end of the fourth connecting rod is connected to the pressure block bolt.

[0009] The above-mentioned polyethylene plastic-coated quick sealing cover for the inner wall of a marine pipe is characterized in that the number of connectors uniformly and fixedly arranged at equal angles around the cap-like structure is greater than or equal to 3.

[0010] The above-mentioned polyethylene plastic-coated quick sealing cap for the inner wall of a marine pipe is characterized in that a reinforced square tube is welded on the die plate to enhance the strength of the die plate.

[0011] The above-mentioned polyethylene plastic-coated quick sealing cap for the inner wall of a marine pipe is characterized in that a handle is welded on the die plate for placing the die plate in a flange end covering position.

[0012] The polyethylene plastic-coated quick sealing cover for the inner wall of a marine pipe as described above is characterized in that the push-pull operating handle is a push-pull quick clamp.

[0013] The polyethylene plastic-coated quick sealing cover for the inner wall of a marine pipe described above is characterized in that a cylindrical component connected to a push-pull quick clamp is provided inside the cover-shaped structure of the quick clamp fixing connecting rod welding piece.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. The present invention uses a sealing cover and a sealing clamping device provided on the sealing cover to fit and seal the flange end port; by pushing and pulling the operating handle, the sealing clamping device is used to lock and fix the sealing cover and the flange end port, with high clamping efficiency, and can complete the polyethylene plastic coating rapid sealing work on the inner wall of marine pipe fittings at a faster speed and higher precision.

[0016] 2. The cover-like structure of the present invention is circular; the connecting parts are strip-shaped structural parts, and hinge holes are provided on the connecting parts; the support welding assembly is a sheet metal structure with a concave cross-section; hinge through holes are provided on its side walls; and connecting holes are provided on the pressure block. It has a simple structure, good motion repeatability, strong rigidity, high precision, and easy maintenance.

[0017] 3. The connectors fixedly arranged at equal angles on all sides of the cover-like structure of the present invention can clamp the cover-like structure tightly and evenly at all sides, thereby reducing the risk of deformation of the cover due to uneven force, loose closure of the pipe opening, and powder leakage during the rotational molding process. This further improves the sealing performance and sealing accuracy, and avoids quality problems such as uneven thickness of the polyethylene coating on the inner wall of the marine pipe fitting.

[0018] 4. A handle is welded on the die plate of the present invention, which is used to place the reinforced die plate into the flange end cover position. It is operated with a push-pull quick clamp and only requires one person to operate, which greatly reduces the safety risk of personnel and makes the clamping and sealing more efficient and safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the front view of the structural diagram of the present invention.

[0020] Figure 2 It is a three-dimensional structural diagram of the working principle of the present invention.

[0021] Figure 3 It is a structural schematic diagram of the quick clamp fixing connecting rod welding part of the present invention.

[0022] Figure 4 It is a structural schematic diagram of the support welding assembly of the present invention.

[0023] Figure 5 It is a structural schematic diagram of the push-pull quick clamp of the present invention.

[0024] Figure 6 It is a front view of the structural diagram of the mold tray of the present invention.

[0025] Figure 7 It is a sectional view taken along the line AA of the main view of the structural diagram of the mold tray of the present invention.

[0026] Figure 8 It is a front view of the structural diagram of the pressing block of the present invention.

[0027] Figure 9 It is a sectional view taken along line BB of the main view of the structural diagram of the pressing block of the present invention.

[0028] In the figure: 1: mold plate; 2: push-pull quick clamp; 3: quick clamp fixing connecting rod welding part; 4: connecting rod; 5: support welding assembly; 6: pressure block; 7: reinforced square tube; 8: handle; 41: first connecting rod; 42: second connecting rod; 43: third connecting rod; 44: fourth connecting rod; 51: first hinged through hole; second hinged through hole; 52:; third hinged through hole; 53: flange end 100. DETAILED DESCRIPTION

[0029] Preferred embodiments

[0030] like Figure 1 As shown, the polyethylene plastic-coated quick sealing cover for the inner wall of a marine pipe fitting includes: a sealing cover for sealing the flange end 100 of the plastic-coated pipe fitting and a sealing clamping device provided on the sealing cover; the sealing clamping device fits and seals the sealing cover and the end of the flange end 100; the sealing clamping device is also provided with an operating handle of the sealing clamping device; by pushing and pulling the operating handle, the sealing clamping device is used to lock and fix the sealing cover and the end of the flange end 100.

[0031] like Figure 2 As shown, the sealing cover includes: a mold plate 1, which is used to seal the flange end 100 of the plastic-coated pipe fitting; the sealing clamping device includes: a quick-clamp connecting rod welding part 3, on which one end of the connecting rod 4 is hinged; the other end of the connecting rod 4 is hinged to a support welding assembly 5; the support welding assembly 5 is hinged to a pressure block 6; the support welding assembly 5 and the pressure block 6 form a clamping claw, and under the drive of the connecting rod 4, the support welding assembly 5 and the pressure block 6 clamp the mold plate 1 and the flange end 100.

[0032] The quick clamp connecting rod welding part 3 includes a cover-like structure, with connecting parts evenly fixed at equal angles on all sides of the cover-like structure; the connecting parts are hinged to the connecting rod 4.

[0033] like Figure 6-Figure 7 As shown, the cover-like structure is circular; the connecting parts are strip-shaped structural parts, and hinge holes are provided on the connecting parts; the support welding assembly 5 is a sheet metal structure with a concave cross-section; hinge through holes are provided on its side walls; and a connecting hole is provided on the pressing block 6.

[0034] like Figure 1As shown, the connecting rod 4 includes a first connecting rod 41, a second connecting rod 42, a third connecting rod 43, and a fourth connecting rod 44; one end of the first connecting rod 41 is hinged to a connecting piece; the middle part of the first connecting rod 41 is hinged to one end of the second connecting rod 42; the other end of the second connecting rod 42 is hinged to the first hinge through hole 51 of the support welding assembly 5; the other end of the second connecting rod 42 is hinged to one end of the fourth connecting rod 44; a strip through hole is provided in the middle part of the fourth connecting rod 45, and the strip through hole is hinged to the second hinge through hole 52 and the third hinge through hole 53 of the support welding assembly 5; the other end of the fourth connecting rod 45 is bolted to the pressure block 6.

[0035] like Figure 3 As shown, there are three connecting pieces fixedly arranged at equal angles around the cover-like structure.

[0036] like Figure 2 As shown, a reinforcing square tube 7 is welded on the mold plate 1 to enhance the strength of the mold plate 1 .

[0037] like Figure 7 As shown, the die plate 1 is a flange-shaped structure with a tapered groove provided thereon. The included angle between the generatrix of the tapered groove and the end face of the die plate 1 is an acute angle θ, which can make the sealing better and the thickness of the polyethylene plastic coating on the inner wall of the marine pipe fitting more uniform.

[0038] like Figure 2 As shown, a handle 8 is welded on the mold plate for placing the reinforced mold plate 1 into the covering position of the flange end 100.

[0039] So Figure 5 As shown, the push-pull operating handle is a push-pull quick clamp 2.

[0040] The cap-like structure of the quick-clamp fixing rod weldment 3 is internally provided with a cylindrical component connected to the push-pull quick clamp 2. The rod of the push-pull quick clamp 2 is disposed within the cylindrical component, and the fixed end of the push-pull quick clamp 2 is hingedly connected to the cylindrical component. When the handle of the push-pull quick clamp 2 is pressed down, the force is transmitted to the quick-clamp fixing rod weldment 3 through the cylindrical component and then applied to the reinforced square tube 7.

[0041] The polyethylene plastic-coated quick-sealing capping system for marine pipe fittings can be operated by a single operator. The die plate and reinforced square steel provide a stable and strong main structure. By operating the push-pull quick caliper and the connecting rod linkage pressure block, a rapid three-point fixation is achieved, completing the pipe fitting port sealing operation efficiently and conveniently.

[0042] The die plate 1 is the main structure that fits on the flange end 100 of the pipe fitting. The reinforcing square steel 7 is welded on the grinding disc 1 to reinforce the die plate. The handle 8 is welded on the die plate 1 to facilitate the sealing installation operation. The quick clamp fixing connecting rod welding part 3 is connected to the push-pull quick clamp 2, and is connected to the support 5 welding assembly through the connecting rod 4, and finally linked with the pressure block 6 to clamp the pipe fitting.

Claims

1. A polyethylene plastic-coated quick-sealing cap for the inner wall of a marine pipe, characterized in that: include: A sealing cover for sealing a flange end (100) of a plastic-coated pipe fitting and a sealing clamping device arranged on the sealing cover; The sealing clamping device fits the sealing cover and the flange end (100) port together for sealing; an operating handle of the sealing clamping device is also provided on the sealing clamping device; and the sealing cover and the flange end (100) port are locked and fixed by the sealing clamping device by pushing and pulling the operating handle.

2. The polyethylene plastic-coated quick-sealing cap for the inner wall of a marine pipe according to claim 1, characterized in that: The sealing cover comprises: a die plate (1), the die plate (1) is used for sealing the flange end (100) of the plastic-coated pipe fitting; the sealing clamping device comprises: a quick-clamping connecting rod welding piece (3), one end of a connecting rod (4) is hingedly connected to the quick-clamping connecting rod welding piece (3); the other end of the connecting rod (4) is hingedly connected to a support welding assembly (5); the support welding assembly (5) is hingedly connected to a pressure block (6); the support welding assembly (5) and the pressure block (6) form a clamping claw, and under the drive of the connecting rod (4), the support welding assembly (5) and the pressure block (6) clamp the die plate (1) and the flange end (100).

3. The polyethylene plastic-coated quick-sealing cap for the inner wall of a marine pipe according to claim 2, characterized in that: The quick-clamp fixed connecting rod welding piece (3) comprises: a cover-shaped structure, with connecting pieces evenly and fixedly arranged at equal angles on all four sides of the cover-shaped structure; and the connecting pieces are hinged to the connecting rod (4).

4. The polyethylene plastic-coated quick-sealing cap for the inner wall of a marine pipe according to claim 3, characterized in that: The cover-shaped structure is circular; the connecting piece is a strip-shaped structural piece, and each connecting piece is provided with a hinge hole; the support welding assembly (5) is a sheet metal structure with a concave cross-section; a hinge through hole is provided on its side wall; and a connecting hole is provided on the pressing block (6).

5. The polyethylene plastic-coated quick sealing cap for the inner wall of a marine pipe according to claim 4, characterized in that: The connecting rod (4) comprises a first connecting rod (41), a second connecting rod (42), a third connecting rod (43), and a fourth connecting rod (44); one end of the first connecting rod (41) is hinged to a connecting member; the middle of the first connecting rod (41) is hinged to one end of the second connecting rod (42); the other end of the second connecting rod (42) is hinged to a first hinged through hole (51) of a support welding assembly (5); the other end of the second connecting rod (42) is hinged to one end of the fourth connecting rod (44); a strip-shaped through hole is provided in the middle of the fourth connecting rod (45), and the strip-shaped through hole is hinged to the second hinged through hole (52) and the third hinged through hole (53) of the support welding assembly (5); the other end of the fourth connecting rod (45) is bolted to the pressure block (6).

6. The polyethylene plastic-coated quick-sealing cap for the inner wall of a marine pipe according to claim 5, characterized in that: The number of connectors fixedly arranged at equal angles on all sides of the cover-like structure is greater than or equal to 3.

7. The polyethylene plastic-coated quick sealing cap for the inner wall of a marine pipe according to claim 1 or 6, characterized in that: A reinforcing square tube (7) is welded on the die plate (1) to enhance the strength of the die plate (1).

8. The polyethylene plastic-coated quick-sealing cap for the inner wall of a marine pipe according to claim 1, characterized in that: A handle (8) is also welded on the die plate, which is used to place the die plate (1) in a closed position with the flange end (100).

9. The polyethylene plastic-coated quick-sealing cap for the inner wall of a marine pipe according to claim 8, characterized in that: The push-pull operating handle is a push-pull type quick clamp (2).

10. The polyethylene plastic-coated quick sealing cap for the inner wall of a marine pipe according to claim 1 or 9, characterized in that: A cylindrical component connected to the push-pull type quick clamp (2) is provided inside the cover-shaped structure of the quick clamp fixing connecting rod welding piece (3).

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