Polyurethane rigid foam plastic tube shell

Abstract

The utility model relates to the technical field of thermal insulation materials, in particular to a polyurethane rigid foam plastic pipe shell which comprises two semicircular pipe shell units and two connecting structures, and each connecting structure comprises two sealing rubber strips, a mounting box, a clamping strip, a handle, a transmission assembly, a plurality of rotating components and a plurality of moving components. Each sealing rubber strip is fixedly connected with the corresponding semicircular tube shell unit, the mounting box is fixedly connected with one semicircular tube shell unit, the clamping strip is fixedly connected with the other semicircular tube shell unit, the handle, the transmission assembly, the rotating components and the moving components are arranged in the mounting box, the transmission assembly is fixedly connected with the handle, and the rotating components are fixedly connected with the moving components. The multiple rotating components are rotationally connected with the transmission assembly, each moving component is fixedly connected with the corresponding rotating component, the clamping strips are matched with the multiple moving components, and the problems that due to the fact that the sealing performance of the splicing positions of the pipe shells is poor, heat loss is likely to be caused, and the heat preservation effect is affected are solved.

Description

Technical Field

[0001] This utility model relates to the field of thermal insulation materials technology, and in particular to a rigid polyurethane foam pipe shell. Background Technology

[0002] Currently available insulated pipe shells are mainly made of materials such as fiberglass, mineral wool, and foam plastics. These materials result in relatively high thermal conductivity, leading to less than ideal insulation performance. Furthermore, their performance in terms of aging resistance, corrosion resistance, and permeability resistance is not ideal. In addition, thermal bridging inevitably occurs during the use of insulated pipe shells. This means that heat radiation escapes through the gaps between pipe shells and through the seams within the shell itself. The existence of thermal bridging is a significant energy loss point in pipe shell insulation and a major drawback of the insulation process.

[0003] To address the aforementioned problems, prior art CN206018153U discloses a rigid polyurethane foam pipe shell made of asphalt, comprising a pipe shell body with an internal cylindrical cavity open at both ends. The pipe shell body includes an insulation layer and a protective layer, which are sequentially nested together from the inside out. A heat-insulating cavity is provided between the insulation layer and the protective layer, and the tops of the insulation layer and the protective layer are respectively bonded together. The beneficial effects of this utility model are: the pipe shell of this utility model has good heat insulation performance, and the pipe shell has excellent corrosion resistance and aging resistance, increasing the service life of the pipe shell. In addition, the two ends of the pipe shell are respectively designed with protrusions and grooves, so that when two adjacent pipes are connected, the protrusion of one pipe shell can be inserted into the groove of the other pipe shell, achieving a tight connection between the pipe shells and reducing heat loss caused by thermal bridging.

[0004] However, in the aforementioned existing technologies, the poor sealing at the joints of the tube shells easily leads to heat loss, affecting the insulation effect. Summary of the Invention

[0005] The purpose of this utility model is to provide a rigid polyurethane foam pipe shell, which solves the technical problem in the prior art where poor sealing at the joints of the pipe shells easily leads to heat loss and affects the insulation effect.

[0006] To achieve the above objectives, this utility model employs a rigid polyurethane foam tube shell, comprising two semi-circular tube shell units and two connecting structures. Each connecting structure includes two sealing strips, a mounting box, a retaining strip, a handle, a transmission assembly, several rotating components, and several moving components. Each sealing strip is fixedly connected to a corresponding semi-circular tube shell unit and located at one end of that unit. The mounting box is fixedly connected to one of the semi-circular tube shell units and located at one end of that unit. The retaining strip is fixedly connected to the other semi-circular tube shell unit and located at one end of that unit. The handle, the transmission assembly, the rotating components, and the moving components are respectively disposed within the mounting box. The transmission assembly is fixedly connected to the handle and located at one end of the handle. The rotating components are rotatably connected to the transmission assembly and are evenly distributed at one end of the assembly. Each moving component is fixedly connected to a corresponding rotating component and located at one end of that component. The retaining strip cooperates with the moving components.

[0007] The locking strip includes a fixing strip and several threaded rods, which are fixedly connected to the fixing strip and are evenly distributed at one end of the fixing strip.

[0008] The transmission assembly includes a transmission shaft and a worm gear, the worm gear being fixedly connected to the transmission shaft and located at one end of the transmission shaft.

[0009] Each of the rotating components includes a worm gear and a hollow cylinder. The hollow cylinder is fixedly connected to the worm gear and is located at one end of the worm gear. The worm gear cooperates with the worm.

[0010] Each of the rotating components further includes a fixed ring and a threaded seat. The fixed ring is fixedly connected to the worm gear and is located at one end of the worm gear. The threaded seat is fixedly connected to the fixed bar and is located at one end of the fixed ring. The threaded seat is threadedly connected to the corresponding threaded rod and is located at one end of the corresponding threaded rod.

[0011] This utility model discloses a rigid polyurethane foam tube shell. Each sealing strip is fixedly connected to a corresponding semi-circular tube shell unit and located at one end of that unit. A mounting box is fixedly connected to one of the semi-circular tube shell units and located at one end of that unit. A retaining strip is fixedly connected to another semi-circular tube shell unit and located at one end of that unit. A handle, a transmission assembly, several rotating components, and several moving components are respectively disposed within the mounting box. The transmission assembly is fixedly connected to the handle and located at one end of the handle. Several rotating components are rotatably connected to the transmission assembly and are evenly distributed at one end of the assembly. Each moving component is fixedly connected to a corresponding rotating component and located at the corresponding end of the rotating component. At one end of the rotating component, the locking strip cooperates with several moving components to splice two semi-circular tube shell units. At this time, the locking strip is inserted into the mounting box and contacts several moving components. Then, the handle is rotated using a tool. The handle drives the transmission component to rotate, which in turn drives several rotating components to rotate. These rotating components then drive several moving components to rotate, and the moving components move the locking strip, slowly bringing the two semi-circular tube shell units into contact. At this time, the two sealing strips come into contact with each other until the two semi-circular tube shell units are spliced. The two sealing strips improve the sealing at the splice, effectively preventing heat loss. This method can effectively solve the problem that poor sealing at the splice of the tube shells easily leads to heat loss and affects the insulation effect. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a structural schematic diagram of a rigid polyurethane foam pipe shell according to this utility model.

[0014] Figure 2 This is a side view of a rigid polyurethane foam pipe shell according to this utility model.

[0015] Figure 3 This is the utility model Figure 2 A structural cross-sectional view of line AA.

[0016] 101-Semi-circular tube shell unit, 102-Sealing strip, 103-Mounting box, 104-Handle, 105-Fixing strip, 106-Threaded rod, 107-Drive shaft, 108-Worm, 109-Worm wheel, 110-Hollow cylinder, 111-Fixing ring, 112-Threaded seat. Detailed Implementation

[0017] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0018] Please see Figures 1-3 ,in Figure 1 This is a structural schematic diagram of a rigid polyurethane foam pipe shell according to this utility model. Figure 2 This is a side view of a rigid polyurethane foam pipe shell according to this utility model. Figure 3 This is the utility model Figure 2 A structural cross-sectional view of line AA.

[0019] This utility model provides a rigid polyurethane foam pipe shell, including a semi-circular pipe shell unit 101, a sealing strip 102, a mounting box 103, a handle 104, a fixing strip 105, a threaded rod 106, a drive shaft 107, a worm gear 108, a worm wheel 109, a hollow cylinder 110, a fixing ring 111, and a threaded seat 112. The aforementioned solution solves the problem that poor sealing at the joints of the pipe shells easily leads to heat loss and affects the insulation effect.

[0020] In this specific embodiment, each sealing strip is fixedly connected to the corresponding semi-circular tube shell unit 101 and located at one end of the corresponding semi-circular tube shell unit 101. The mounting box 103 is fixedly connected to one of the semi-circular tube shell units 101 and located at one end of the corresponding semi-circular tube shell unit 101. The retaining strip is fixedly connected to the other semi-circular tube shell unit 101 and located at one end of the other semi-circular tube shell unit 101. The handle 104, the transmission assembly, a plurality of rotating components, and a plurality of moving components are respectively disposed in the mounting box 103. The transmission assembly is fixedly connected to the handle 104 and located at one end of the handle 104. The plurality of rotating components are rotatably connected to the transmission assembly and are evenly disposed at one end of the transmission assembly. Each moving component is fixedly connected to the corresponding rotating component and located at one end of the rotating component. At one end of the corresponding rotating component, the locking strip cooperates with several moving components to splice the two semi-circular tube shell units 101. At this time, the locking strip is inserted into the mounting box 103 and contacts several moving components. Then, the handle 104 is rotated using a tool. The handle 104 drives the transmission component to rotate, the transmission component drives several rotating components to rotate, the several rotating components drive several moving components to rotate, and the several moving components drive the locking strip to move, slowly bringing the two semi-circular tube shell units 101 into contact. At this time, the two sealing strips 102 contact each other until the two semi-circular tube shell units 101 are spliced. The two sealing strips 102 improve the sealing performance at the splice, effectively preventing heat loss. This solves the problem that poor sealing at the splice of the tube shell easily leads to heat loss and affects the heat preservation effect.

[0021] The locking bar includes a fixing bar 105 and a plurality of threaded rods 106. The plurality of threaded rods 106 are fixedly connected to the fixing bar 105 and are evenly arranged at one end of the fixing bar 105. The plurality of threaded rods 106 are installed on the fixing bar 105.

[0022] Secondly, the transmission assembly includes a transmission shaft 107 and a worm gear 108. The worm gear 108 is fixedly connected to the transmission shaft 107 and is located at one end of the transmission shaft 107. The transmission shaft 107 drives the worm gear 108 to rotate.

[0023] Meanwhile, each of the rotating components includes a worm gear 109 and a hollow cylinder 110. The hollow cylinder 110 is fixedly connected to the worm gear 109 and is located at one end of the worm gear 109. The worm gear 109 cooperates with the worm 108. The worm 108 drives the worm gear 109 to rotate, and the worm gear 109 drives the hollow cylinder 110 to rotate within the mounting box 103.

[0024] In addition, each of the rotating components also includes a fixed ring 111 and a threaded seat 112. The fixed ring 111 is fixedly connected to the worm gear 109 and is located at one end of the worm gear 109. The threaded seat 112 is fixedly connected to the fixed bar 105 and is located at one end of the fixed ring 111. The threaded seat 112 is threadedly connected to the corresponding threaded rod 106 and is located at one end of the corresponding threaded rod 106. The worm gear 109 drives the threaded seat 112 to rotate through the fixed ring 111, and the threaded seat 112 drives the threaded rod 106 to move.

[0025] In this embodiment, a rigid polyurethane foam tube shell is used by splicing two semi-circular tube shell units 101 together. At this time, several threaded rods 106 engage with several threaded seats 112. Then, a tool is used to rotate the handle 104. The handle 104 drives the worm gear 108 to rotate via the transmission shaft 107. The worm gear 108 drives several worm wheels 109 to rotate. The worm wheels 109 drive several hollow cylinders 110 to rotate within the mounting box 103. The wheel 109 drives the threaded seats 112 to rotate through the fixed rings 111. The threaded seats 112 drive the threaded rods 106 to move, slowly bringing the two semi-circular tube shell units 101 into contact. At this time, the two sealing strips 102 come into contact with each other until the two semi-circular tube shell units 101 are spliced ​​together. The two sealing strips 102 improve the sealing performance at the splice and effectively prevent heat loss. This solves the problem that poor sealing at the splice of the tube shell can easily lead to heat loss and affect the heat preservation effect.

[0026] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A rigid polyurethane foam tube shell, comprising two semi-circular tube shell units, characterized in that, It also includes two connection structures, Each of the connection structures includes two sealing strips, a mounting box, a retaining strip, a handle, a transmission assembly, several rotating parts, and several moving parts. Each sealing strip is fixedly connected to a corresponding semi-circular tube shell unit and located at one end of the corresponding semi-circular tube shell unit. The mounting box is fixedly connected to one of the semi-circular tube shell units and located at one end of the one-half-circular tube shell unit. The retaining strip is fixedly connected to the other semi-circular tube shell unit and located at one end of the other semi-circular tube shell unit. The handle, the transmission assembly, the several rotating parts, and the several moving parts are respectively disposed in the mounting box. The transmission assembly is fixedly connected to the handle and located at one end of the handle. The several rotating parts are rotatably connected to the transmission assembly and are evenly disposed at one end of the transmission assembly. Each moving part is fixedly connected to a corresponding rotating part and located at one end of the corresponding rotating part. The retaining strip cooperates with the several moving parts.

2. The rigid polyurethane foam pipe shell as described in claim 1, characterized in that, The locking bar includes a fixing bar and several threaded rods, the several threaded rods being fixedly connected to the fixing bar and evenly distributed at one end of the fixing bar.

3. The rigid polyurethane foam pipe shell as described in claim 2, characterized in that, The transmission assembly includes a transmission shaft and a worm gear, the worm gear being fixedly connected to the transmission shaft and located at one end of the transmission shaft.

4. The rigid polyurethane foam pipe shell as described in claim 3, characterized in that, Each of the rotating components includes a worm gear and a hollow cylinder, the hollow cylinder being fixedly connected to the worm gear and located at one end of the worm gear, the worm gear engaging with the worm.

5. The rigid polyurethane foam pipe shell as described in claim 4, characterized in that, Each of the rotating components further includes a retaining ring and a threaded seat. The retaining ring is fixedly connected to the worm gear and located at one end of the worm gear. The threaded seat is fixedly connected to the retaining bar and located at one end of the retaining ring. The threaded seat is threadedly connected to the corresponding threaded rod and located at one end of the corresponding threaded rod.

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