Uniform heated electric hot melting sleeve

Abstract

The utility model discloses an evenly heated electric hot melting sleeve which comprises an electric hot melting sleeve body and two fastening clamping rings used for fixing the electric hot melting sleeve body, and the opening ends of the two fastening clamping rings are connected through a bolt. The protection assemblies are arranged on the two fastening clamping rings and used for conducting heat preservation protection on the electric hot melting sleeve body in the welding process, each protection assembly comprises a protection ring arranged on the side, close to the welding portion of the electric hot melting sleeve body, of the corresponding fastening clamping ring, and a protection groove is formed in the side, close to the side wall of the electric hot melting sleeve body, of each protection ring; and a rubber air bag is arranged in the protection groove. Through the arrangement of the protection assembly, auxiliary shielding protection is carried out on the welding part of the electric hot melting sleeve body, so that the welding part of the electric hot melting sleeve body is prevented from being in contact with the external environment, the relative stability of the temperature of a welding area is maintained, and the uniform heating effect of the electric hot melting sleeve body in the welding process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heat-melting sleeves, in particular to a uniformly heated electric heat-melting sleeve. Background Art

[0002] Electric hot-melt sleeves are usually made of PE sheets through processes such as covering, bending, and coiling, in which electric heating wire mesh (resistance wire) is embedded. During the welding process, the electric hot-melt sleeve is placed at the interface of the two pipes to be connected. The electric hot-melt tape (that is, the part with the resistance wire embedded) is tightly attached to the outer surface of the connected end, and the resistance wire is powered by the electric hot-melt welding machine, causing it to heat and melt, thereby achieving a reliable connection of the pipes.

[0003] During the process of connecting the pipes with the electric hot melt sleeve, when the electric hot melt sleeve welding construction is carried out outdoors, under the influence of outdoor temperature and wind, the heat at the interface between the electric hot melt sleeve and the pipe will be more easily dissipated into the surrounding environment, causing the temperature of the welding area to drop, thereby affecting the uniformity of heating. In addition, when the wind speed is high, different parts of the welding area will be subject to different degrees of cooling effects. For example, the windward side will be subject to a stronger cooling effect, while the leeward side will be relatively warm. This local cooling effect will further aggravate the problem of uneven heating of the electric hot melt sleeve.

[0004] Therefore, a uniformly heated electric heat-melting sleeve is urgently needed to solve the above problems. Utility Model Content

[0005] The purpose of the present invention is to provide a uniformly heated electric hot melt sleeve to solve the problem in the background art that outdoor temperature and wind force may affect the uniformity of heating during welding of the electric hot melt sleeve.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a uniformly heated electric heat-melting sleeve, comprising an electric heat-melting sleeve body and two fastening clamps for fixing the electric heat-melting sleeve body, wherein the open ends of the two fastening clamps are connected by bolts, and further comprising a protective assembly provided on the two fastening clamps for providing thermal insulation protection during welding of the electric heat-melting sleeve body;

[0007] The protective component includes a protective ring arranged on the side of the fastening clamp close to the welding part of the electric hot melt sleeve body, the protective ring is connected to the fastening clamp through a telescopic component, and a protective groove is opened on the side of the protective ring close to the side wall of the electric hot melt sleeve body. A rubber airbag is arranged in the protective groove, and the protective ring is provided with an injection component for injecting air into the rubber airbag.

[0008] A flexible iron plate is provided on one side of the protective ring close to the fastening clamp ring, and a flexible magnet is provided on one side of the fastening clamp ring close to the protective ring. The flexible magnet is arranged opposite to the flexible iron plate.

[0009] The telescopic assembly includes a telescopic cavity opened in the fastening clamp ring, the telescopic cavity is slidably connected to a telescopic plate, a connecting plate is provided on the side of the telescopic plate close to the protective ring, and the side of the connecting plate away from the telescopic plate is connected to the protective ring.

[0010] The air injection assembly includes a connecting hose connected to one side of the protective ring, one end of the connecting hose is connected to the rubber airbag, the other end of the connecting hose is fixedly connected to a first mounting tube, the other end of the first mounting tube is connected to a spherical airbag, and a second mounting tube is provided on the side of the spherical airbag away from the protective ring.

[0011] A one-way valve is respectively provided in the first installation tube and the second installation tube, and the conducting direction of the two one-way valves is from the outside of the second installation tube to the inside of the rubber airbag.

[0012] The first mounting pipe is provided with an air release valve.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The utility model provides auxiliary shielding and protection for the welding part of the electric hot melt sleeve body through the arrangement of the protective component, thereby preventing the welding part of the electric hot melt sleeve body from contacting with the external environment, thereby reducing the heat loss and different degrees of cooling effect on the welding part of the electric hot melt sleeve body caused by the external environment temperature and wind force, thereby maintaining the relative stability of the temperature of the welding area, avoiding welding temperature fluctuations caused by changes in the external environment temperature, and improving the uniform heating effect of the electric hot melt sleeve body during the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the position structure between the protective component and the fastening clamp of the utility model;

[0017] Figure 3 for Figure 3 Enlarged view of point A in the middle;

[0018] Figure 4 This is a schematic diagram of the internal structure of the telescopic component of the present utility model;

[0019] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0020] In the figure: 101, electric hot melt sleeve body; 102, fastening clamp; 103, bolt; 201, protective ring; 202, protective groove; 203, rubber airbag; 301, telescopic chamber; 302, telescopic plate; 303, connecting plate; 401, connecting hose; 402, first mounting tube; 403, spherical airbag; 404, second mounting tube; 405, one-way valve; 5, air release valve. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1

[0023] See also Figure 1-Figure 5 The uniformly heated electric hot melt sleeve shown in the figure includes an electric hot melt sleeve body 101 and two fastening clamps 102 for fixing the electric hot melt sleeve body 101. The open ends of the two fastening clamps 102 are connected by bolts 103. The protective assembly is also provided on the two fastening clamps 102 for thermal insulation protection during the welding process of the electric hot melt sleeve body 101.

[0024] The protective assembly includes a protective ring 201 disposed on the side of the fastening clamp 102 near the welding portion of the electric hot melt sleeve body 101. The protective ring 201 is connected to the fastening clamp 102 via a telescopic assembly. A protective groove 202 is formed on the side of the protective ring 201 near the side wall of the electric hot melt sleeve body 101. A rubber airbag 203 is disposed in the protective groove 202. The protective ring 201 is provided with an air injection assembly for injecting air into the rubber airbag 203.

[0025] It should be noted here that: by setting up the protective component, the welding part of the electric hot melt sleeve body 101 is provided with auxiliary shielding and protection, thereby avoiding the contact between the welding part of the electric hot melt sleeve body 101 and the external environment, thereby reducing the heat loss and different degrees of cooling effect on the welding part of the electric hot melt sleeve body 101 caused by the external environment temperature and wind, thereby maintaining the relative stability of the temperature of the welding area, avoiding welding temperature fluctuations caused by changes in the external environment temperature, and improving the uniform heating effect of the electric hot melt sleeve body 101 during the welding process.

[0026] See also Figure 4, the protective ring 201 in the figure is provided with a flexible iron plate on one side close to the fastening clamp 102, which is not shown in the figure here, and the fastening clamp 102 is provided with a flexible magnet on one side close to the protective ring 201, which is not shown in the figure here, and the flexible magnet is arranged opposite to the flexible iron plate;

[0027] It should be noted here that the provision of the flexible iron plate and the flexible magnet facilitates the positioning of the protective ring 201 after storage.

[0028] See also Figure 5 The telescopic assembly shown in the figure includes a telescopic cavity 301 opened in the fastening clamp 102, and the telescopic cavity 301 is slidably connected to the telescopic plate 302. The side of the telescopic plate 302 close to the protective ring 201 is provided with a connecting plate 303, and the side of the connecting plate 303 away from the telescopic plate 302 is connected to the protective ring 201;

[0029] It should be noted here that: by setting the telescopic component, it is convenient to pull and shrink the protective ring 201, so as to adapt to the welding position within a certain range and store the protective ring 201 after welding is completed.

[0030] It is worth noting that the protective ring 201 , the telescopic plate 302 and the connecting plate 303 are made of flexible materials, thereby adapting to the deformation of the fastening clamp 102 .

[0031] Working principle: When welding the electric hot melt sleeve body 101, place the electric hot melt sleeve body 101 at the pipe interface, and make the part of the electric hot melt tape with the resistance wire embedded in it close to the outer surface of the connected end and cover a certain length. Then use the fastening clamp 102 to firmly fix the electric hot melt sleeve body 101 on the side wall of the pipe;

[0032] After the hot melt sleeve body 101 is fastened, the output line end of the welding machine is connected to the connecting line end of the hot melt belt. Then, by pulling the protective ring 201, the protective ring 201 is passed over the welding part of the hot melt sleeve body 101, and the air injection component is used to make the rubber air bag 203 abut against the side wall of the pipe, thereby shielding the hot melt sleeve body 101 welding part on both sides of the protective ring 201 and the fastening clamp 102 and shielding the hot melt sleeve body 101 welding part above the connecting plate 303, thereby achieving shielding protection for the hot melt sleeve body 101 welding part. As for the hot melt sleeve body 101 at the opening end of the fastening clamp 102, the hot melt sleeve body 101 welding part is shielded. The welding part of the fusion sleeve body 101 can be shielded by a shielding plate made of the same material as the connecting plate 303. Since the welding part of the electric hot melt sleeve body 101 at the open end of the fastening clamp 102 is small, manual shielding protection is easy to operate, thereby avoiding the contact between the welding part of the electric hot melt sleeve body 101 and the external environment, reducing the heat loss and different degrees of cooling effect on the welding part of the electric hot melt sleeve body 101 caused by the external ambient temperature and wind, thereby maintaining the relative stability of the temperature of the welding area, avoiding welding temperature fluctuations caused by changes in the external ambient temperature, and improving the uniform heating effect of the electric hot melt sleeve body 101 during the welding process.

[0033] Example 2

[0034] See also Figure 3 This embodiment further illustrates Example 1. The gas injection assembly shown in the figure includes a connecting hose 401 connected to one side of the protective ring 201. One end of the connecting hose 401 is connected to the rubber airbag 203. The other end of the connecting hose 401 is fixedly connected to a first mounting tube 402. The other end of the first mounting tube 402 is connected to a spherical airbag 403. A second mounting tube 404 is provided on the side of the spherical airbag 403 away from the protective ring 201.

[0035] It should be noted that: through the setting of the gas injection component, when the spherical airbag 403 is pressed, the gas inside the spherical airbag 403 will be compressed under the action of force, so that under the action of gas pressure and the one-way blocking effect of the one-way valve 405, the gas inside the spherical airbag 403 is injected into the rubber airbag 203 from the first mounting tube 402. After the spherical airbag 403 is pressed to a certain extent, the pressure on the spherical airbag 403 is released. At this time, under the deformation effect of the spherical airbag 403, the spherical airbag 403 is deformed. The spherical airbag 403 is deformed and restored to its original shape, and under the action of the air pressure difference, the outside air is sucked into the spherical airbag 403 from the second mounting tube 404, so that under the reciprocating pressing action on the spherical airbag 403, the outside air is reciprocatingly injected into the rubber airbag 203, so that the rubber airbag 203 is expanded by the air. The expanded rubber airbag 203 will be against the side wall of the pipe, thereby shielding and protecting the end of the electric hot melt sleeve body 101 away from the fastening clamp 102.

[0036] See also Figure 3 In the figure, a one-way valve 405 is provided in each of the first mounting tube 402 and the second mounting tube 404. The conducting direction of the two one-way valves 405 is from the outside of the second mounting tube 404 to the inside of the rubber airbag 203.

[0037] It should be noted that the provision of the one-way valve 405 and the limitation of the conduction direction facilitate the one-way gas injection into the rubber airbag 203 , thereby allowing external gas to be continuously injected into the rubber airbag 203 , causing the rubber airbag 203 to expand.

[0038] See also Figure 3 , the first installation pipe 402 shown in the figure is provided with a relief valve 5, and the relief valve 5 is closer to the connecting hose 401 than the one-way valve 405 installed in the first installation pipe 402;

[0039] It should be noted that the provision of the deflation valve 5 facilitates deflation of the rubber airbag 203 , thereby releasing the welding protection of the electric hot melt sleeve body 101 after welding is completed.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A uniformly heated electric hot melt sleeve comprising: An electric hot melt sleeve body (101) and two fastening clamps (102) for fixing the electric hot melt sleeve body (101), wherein the open ends of the two fastening clamps (102) are connected by bolts (103); It is characterized by further comprising: A protective component provided on two fastening clamps (102) for providing thermal insulation protection to the electric heat-melting sleeve body (101) during welding; The protective assembly comprises a protective ring (201) arranged on a side of a fastening clamp (102) close to a welding portion of an electric hot melt sleeve body (101); the protective ring (201) is connected to the fastening clamp (102) via a telescopic assembly; a protective groove (202) is provided on a side of the protective ring (201) close to a side wall of the electric hot melt sleeve body (101); a rubber airbag (203) is provided in the protective groove (202); and the protective ring (201) is provided with an air injection assembly for injecting air into the rubber airbag (203).

2. The uniformly heated electric heat-melting sleeve according to claim 1, characterized in that: A flexible iron plate is provided on one side of the protective ring (201) close to the fastening clamp ring (102), and a flexible magnet is provided on one side of the fastening clamp ring (102) close to the protective ring (201). The flexible magnet is arranged opposite to the flexible iron plate.

3. The uniformly heated electric heat-melting sleeve according to claim 1, characterized in that: The telescopic assembly comprises a telescopic cavity (301) opened in a fastening clamp ring (102); the telescopic cavity (301) is slidably connected to a telescopic plate (302); a connecting plate (303) is provided on a side of the telescopic plate (302) close to the protective ring (201); and a side of the connecting plate (303) away from the telescopic plate (302) is connected to the protective ring (201).

4. The uniformly heated electric heat-melting sleeve according to claim 1, characterized in that: The gas injection assembly comprises a connecting hose (401) connected to one side of the protective ring (201), one end of the connecting hose (401) is connected to the rubber airbag (203), the other end of the connecting hose (401) is fixedly connected to a first mounting tube (402), the other end of the first mounting tube (402) is connected to a spherical airbag (403), and a second mounting tube (404) is provided on the side of the spherical airbag (403) away from the protective ring (201).

5. The uniformly heated electric heat-melting sleeve according to claim 4, characterized in that: One-way valves (405) are respectively provided in the first installation tube (402) and the second installation tube (404), and the conducting direction of the two one-way valves (405) is from the outside of the second installation tube (404) to the inside of the rubber airbag (203).

6. The uniformly heated electric heat-melting sleeve according to claim 4, characterized in that: The first mounting pipe (402) is provided with an air release valve (5).

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