PVC plastic hose cooling and setting machine

Abstract

The utility model relates to the technical field of plastic hose cooling equipment, concretely to a PVC plastic hose cooling and shaping machine. It includes water tank, directional water flow subassembly, stirring subassembly and spacing component, and the water tank bottom end is provided with a plurality of supporting legs, and the water tank has primary cooling groove and secondary cooling groove, and the directional water flow subassembly is distributed at the primary cooling groove, and the directional water flow subassembly includes inlet pipe set up on the water tank, multi -way pipe set up on the water tank and communicates with inlet pipe, the water head that communicates multiple evenly on multi -way pipe sprays, and the fixed plate that can detachably set up on the water tank, and the stirring subassembly is distributed at the secondary cooling groove, and the spacing component sets up on the water tank and is distributed between primary cooling groove and secondary cooling groove. The utility model divides the water tank into primary cooling groove and secondary cooling groove, and guarantees the cooling speed of hose through the circulation of water flow, and avoids the contact of hose with other articles in the process of primary cooling.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic hose cooling equipment, and in particular to a PVC plastic hose cooling and shaping machine. Background Technology

[0002] In the production process of plastic pipes, the plastic is first conveyed, compressed, melted and plasticized between the rotating screw and the barrel of the extruder. Then, it is quantitatively passed through the extrusion molding die and the shaping die installed at the head of the barrel. After the plastic hose is extruded, it falls directly into the liquid for immersion. It cools and shapes while being pulled and moved and immersed.

[0003] Chinese patent CN223354721U discloses a PVC plastic hose cooling and shaping device. By setting up a support mechanism and a clamping mechanism, the device allows the PVC plastic hose to rotate and be transported during the cooling and shaping process, reducing hose deformation and ensuring more uniform cooling. The clamping mechanism is installed on the upper end of the filtering mechanism, and the drying mechanism is installed on the right end of the support mechanism. The filtering mechanism performs filtration, the support mechanism provides support, the cooling mechanism performs cooling, the transport mechanism performs transport, the clamping mechanism performs clamping, and the drying mechanism performs air drying.

[0004] However, the above technical solution has the following shortcomings: the temperature of the hose after extrusion is higher than the melting temperature of the plastic. Although the hose hardens faster by spraying, the hose is directly in contact with the support mechanism, which will cause the hose to be stretched under the action of friction. Alternatively, under the action of gravity and the reaction force of the support mechanism, the inner walls of the hose will come into contact with each other and stick together, thus affecting the production quality of the hose. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a PVC plastic hose cooling and shaping machine that divides the water tank into a primary cooling tank and a secondary cooling tank, strengthens water circulation to ensure the cooling speed of the hose, and prevents the hose from contacting other items during the primary cooling process.

[0006] The technical solution of this utility model is a PVC plastic hose cooling and shaping machine, comprising: a water tank with multiple support legs at its bottom, the water tank having a primary cooling tank and a secondary cooling tank; a directional water flow assembly distributed in the primary cooling tank, the directional water flow assembly including an inlet pipe disposed on the water tank, a multi-port pipe disposed on the water tank and connected to the inlet pipe, multiple water spray heads uniformly connected on the multi-port pipe, and a fixing plate detachably disposed on the water tank; a stirring assembly distributed in the secondary cooling tank; and a limiting assembly disposed between the directional water flow assembly and the stirring assembly.

[0007] Preferably, the primary cooling tank has an arc-shaped surface, and multiple water spray nozzles all output water towards the arc-shaped surface.

[0008] Preferably, the limiting assembly includes a top frame mounted on the water tank, an internally threaded cylinder rotatably mounted on the top frame, a handwheel coaxially mounted on the internally threaded cylinder, a threaded post threadedly connected to the internally threaded cylinder, a lifting frame mounted on the threaded post, a limiting rod rotatably mounted on both the lifting frame and the water tank, and two guide rods rotatably mounted side by side on the water tank; the two guide rods are distributed on both sides of the limiting rod.

[0009] Preferably, multiple evenly distributed arc-shaped grooves are provided on the circumference of both limiting rods and both guide rods.

[0010] Preferably, elastic rings are provided at each of the multiple arc-shaped grooves.

[0011] Preferably, the stirring assembly includes a plurality of motors evenly arranged at the bottom of the water tank, a stirring impeller with one at each of the output ends of the plurality of motors, and a plurality of support rods evenly arranged on the water tank; the plurality of stirring impellers are distributed below the plurality of support rods.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects:

[0013] In use, the extrusion points of the extruder are located above the primary cooling tank. The extruded plastic hose falls into the cooling water inside the primary cooling tank. The water outlet direction of multiple spray nozzles is consistent with the conveying direction of the plastic hose. The circulating coolant can initially disrupt the thermal boundary layer, thereby increasing the cooling speed of the hose. At the same time, the buoyancy of the cooling water supports the hose, preventing it from sticking together due to its own weight. The hardened plastic hose passes through the limiting component into the secondary cooling tank. The flow rate of the cooling water inside the secondary cooling tank increases, allowing the cooler cooling water to quickly flow to the vicinity of the hose, thereby increasing the cooling speed of the hose. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0015] Figure 2 This is a cross-sectional view of an embodiment of the present utility model;

[0016] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle;

[0017] Reference numerals: 1. Water tank; 101. Primary cooling tank; 102. Secondary cooling tank; 2. Extruder; 3. Inlet pipe; 4. Spray head; 5. Fixing plate; 6. Limiting assembly; 61. Top frame; 62. Internal threaded cylinder; 63. Handwheel; 64. Lifting frame; 65. Threaded column; 66. Limiting rod; 67. Guide rod; 7. Motor; 8. Agitator impeller; 9. Support rod; 10. Outlet pipe. Detailed Implementation

[0018] Example 1, as Figures 1-3 As shown, this embodiment proposes a PVC plastic hose cooling and shaping machine, including a water tank 1, a directional water flow assembly, a stirring assembly, and a limiting assembly. The bottom of the water tank 1 is provided with multiple support legs. The water tank 1 has a primary cooling tank 101 and a secondary cooling tank 102. The water tank 1 is also provided with an inlet pipe and an outlet pipe for connecting the secondary cooling tank 102, so as to circulate the cooling water. The used cooling water will circulate through the outlet pipe and the liquid outlet pipe 10 to the cooling water circulation assembly that can output a fixed temperature, so that cooling water of different temperatures can flow into the primary cooling tank 101 and the secondary cooling tank 102 through the inlet pipe and the liquid inlet pipe 3.

[0019] The directional water flow assembly is located in the primary cooling tank 101. The directional water flow assembly includes an inlet pipe 3 installed on the water tank 1, a multi-port pipe installed on the water tank 1 and connected to the inlet pipe 3, multiple water spray heads 4 evenly connected on the multi-port pipe, and a fixing plate 5 detachably installed on the water tank 1. The stirring assembly is located in the secondary cooling tank 102. The limiting assembly 6 is installed on the water tank 1 and distributed between the primary cooling tank 101 and the secondary cooling tank 102.

[0020] The initial cooling tank 101 has an arc-shaped surface, and multiple water spray heads 4 all output water towards the arc-shaped surface. The water spray direction of the multiple water spray heads 4 is perpendicular to the delivery direction of the hose. When the hose is immersed in the cooling water, because the hose has a hollow part inside, the hose will float in the upper half of the cooling water. The multiple water spray heads 4 are distributed in the upper half of the cooling water, and the water sprayed by the water spray heads 4 will move in the same direction as the hose, so that the water flow near the hose can be kept in a flowing state, avoiding the accumulation of heated water near the hose and affecting the cooling speed of the hose. The arc-shaped surface is a guide surface for the water flow, guiding the flow direction of the water flow, reducing the probability of eddies in the cooling water, and preventing the hose, whose outer surface has not hardened, from deforming under the pull of eddies.

[0021] In this embodiment, the extrusion points of the extruder 2 are distributed above the primary cooling tank 101. The extruded plastic hose falls into the cooling water inside the primary cooling tank 101. The water outlet direction of the multiple spray nozzles 4 is consistent with the conveying direction of the plastic hose. The coolant flows in from the inlet pipe 3 and flows out from the outlet pipe 10, keeping the coolant in a circulating state. During the cooling process, the nearby liquid will rapidly heat up to form a thermal boundary layer, which will reduce the cooling speed of the hose. The circulating coolant can initially break the thermal boundary layer, thereby increasing the cooling speed of the hose. At the same time, the buoyancy of the cooling water will support the hose, preventing the hose from sticking together due to its own weight. The hardened plastic hose will pass through the limiting component 6 into the secondary cooling tank 102. The flow rate of the cooling water inside the secondary cooling tank 102 will increase, allowing the cooler cooling water to flow quickly to the vicinity of the hose, thereby increasing the cooling speed of the hose.

[0022] Example 2, as Figure 3 As shown, this embodiment proposes a PVC plastic hose cooling and shaping machine. Compared with Embodiment 1, in this embodiment, the limiting component 6 includes a top frame 61 mounted on the water tank 1, an internally threaded cylinder 62 rotatably mounted on the top frame 61, a handwheel 63 coaxially mounted on the internally threaded cylinder 62, a threaded post 65 threadedly connected to the internally threaded cylinder 62, a lifting frame 64 mounted on the threaded post 65, a limiting rod 66 rotatably mounted on both the lifting frame 64 and the water tank 1, and two guide rods 67 rotatably mounted side by side on the water tank 1; after the hose is initially cooled, it will first contact a guide rod. The rod 67 contacts the hose and then moves between the two limit rods 66. Finally, it is received by another guide rod 67 into the secondary cooling tank 102. Depending on the diameter of the hose, the user will turn the handwheel 63 to drive the internal threaded cylinder 62 to rotate. This drives the threaded column 65 to rise and fall through the threaded transmission. The threaded column 65 drives the lifting frame 64 to adjust the distance between the two limit rods 66, reducing the space that the hose can move. This prevents the hose from deforming when it is moved by the eddy current inside the secondary cooling tank 102.

[0023] Multiple evenly distributed arc-shaped grooves are provided on the circumference of the two limiting rods 66 and the two guide rods 67. The arc-shaped grooves can restrict the left and right movement of the hose, improving the practicality of the limiting rods 66 and guide rods 67. Elastic rings are provided at the multiple arc-shaped grooves. The multiple elastic rings can absorb the force generated by the movement of the hose, thereby reducing the reaction force that the hose receives when it collides with the elastic rings.

[0024] Example 3, as Figure 1 and Figure 2As shown in the figure, the PVC plastic hose cooling and shaping machine proposed in this embodiment, compared with the first embodiment, in this embodiment, the stirring assembly includes multiple motors 7 evenly arranged at the bottom of the water tank 1, one stirring impeller 8 arranged at the output end of each of the multiple motors 7, and multiple support rods 9 evenly arranged on the water tank 1; the multiple stirring impellers 8 are all distributed below the multiple support rods 9, and the rotation amplitude of the stirring impellers 8 needs to be within a certain range to avoid the high-speed water flow driven by the stirring impellers 8 causing high-frequency vibration and serpentine oscillation of the hose, so as to ensure the production quality of the hose. At the same time, the stirring impellers 8 should be low-speed, large-diameter propeller impellers to generate a smooth push flow rather than a high-shear turbulent flow.

[0025] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A PVC plastic hose cooling and shaping machine, characterized in that, include: The water tank (1) has multiple support legs at its bottom end. The water tank (1) has a primary cooling tank (101) and a secondary cooling tank (102). The directional water flow assembly is distributed in the primary cooling tank (101). The directional water flow assembly includes an inlet pipe (3) set on the water tank (1), a multi-port pipe set on the water tank (1) and connected to the inlet pipe (3), multiple water spray heads (4) uniformly connected on the multi-port pipe, and a fixing plate (5) detachably set on the water tank (1). The stirring assembly is located in the secondary cooling tank (102); A limiting component (6) is disposed on the water tank (1) and distributed between the primary cooling tank (101) and the secondary cooling tank (102).

2. The PVC plastic hose cooling and shaping machine according to claim 1, characterized in that, The initial cooling tank (101) has an arc-shaped surface, and multiple water spray heads (4) all output water towards the arc-shaped surface.

3. The PVC plastic hose cooling and shaping machine according to claim 1, characterized in that, The limiting assembly (6) includes a top frame (61) mounted on the water tank (1), an internal threaded cylinder (62) rotatably mounted on the top frame (61), a handwheel (63) coaxially mounted on the internal threaded cylinder (62), a threaded post (65) threadedly connected to the internal threaded cylinder (62), a lifting frame (64) mounted on the threaded post (65), a limiting rod (66) rotatably mounted on the lifting frame (64) and the water tank (1), and two guide rods (67) rotatably mounted side by side on the water tank (1); the two guide rods (67) are distributed on both sides of the limiting rod (66).

4. A PVC plastic hose cooling and shaping machine according to claim 3, characterized in that, Multiple evenly distributed arc-shaped grooves are provided on the circumference of the two limiting rods (66) and the two guide rods (67).

5. A PVC plastic hose cooling and shaping machine according to claim 4, characterized in that, Elastic rings are installed at multiple arc-shaped grooves.

6. A PVC plastic hose cooling and shaping machine according to claim 1, characterized in that, The stirring assembly includes multiple motors (7) evenly arranged at the bottom of the water tank (1), one stirring impeller (8) at the output end of each of the multiple motors (7), and multiple support rods (9) evenly arranged on the water tank (1); the multiple stirring impellers (8) are all distributed below the multiple support rods (9).

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