Extrusion equipment for pipe production

By using a motor-driven reciprocating screw and cleaning brush assembly, the problem of needing to disassemble and clean the filter plate is solved, enabling continuous cleaning of impurities from the filter screen and improving the equipment's working efficiency.

CN224224474UActive Publication Date: 2026-05-12CHINA INVESTMENT (TIANJIN) THERMAL POWER CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA INVESTMENT (TIANJIN) THERMAL POWER CO LTD
Filing Date
2025-06-05
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

Existing pipe production extrusion equipment requires machine shutdown and disassembly for cleaning when filter media accumulate on the filter plates, resulting in poor filtration sustainability and reduced equipment efficiency.

Method used

The filter screen is cleaned by a motor-driven reciprocating screw, which pushes the cleaning brush at the bottom of the support rod through the moving block to clean the impurities on the top of the filter screen. The impurities are then discharged out of the box through the feed inlet, thus achieving continuous impurity cleaning of the filter screen.

Benefits of technology

It improves the filter screen's ability to continuously filter mixed impurities from cooling water, thereby enhancing the working efficiency of extrusion equipment used in pipe production.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the related technical field of pipe production, in particular to extrusion equipment for pipe production, which comprises an equipment body, and the equipment body comprises an extrusion molding machine head arranged at the top of a base; the feeding hole is formed in the top of the extrusion molding machine head; the traction piece is arranged at one end of the top of the base; a cleaning assembly is arranged on one side of the extrusion molding machine head and located on the top of the base, and the cleaning assembly comprises a box body arranged on one side of the extrusion molding machine head; the cooling piece is arranged on the box body; the filter screen is arranged in the box body; the motor is arranged on one side of the box body; the reciprocating screw rod is arranged at the output end of the motor; the moving block sleeves the outer side of the reciprocating screw rod; the supporting rod is arranged on the outer side of the moving block; the cleaning brush is arranged at the bottom of the supporting rod and located on the top of the filter screen. And the material guiding openings are symmetrically formed in the two sides of the box body, the filtering continuity of the filtering net on cooling water mixed with impurities is improved through the cleaning assembly, and the working efficiency of the extrusion equipment for pipe production is improved.
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Description

Technical Field

[0001] This utility model relates to the technical field of pipe production, and in particular to an extrusion device for pipe production. Background Technology

[0002] PE-RT underfloor heating pipes are an innovative alternative to traditional metal and earlier pipe materials. Through ethylene-octene / hexene copolymerization modification technology, they form a highly branched molecular structure, combining high-temperature resistance, creep resistance, and flexibility. This solves problems such as the easy corrosion of metal pipes and the low-temperature brittleness and inability to be repaired by heat fusion in plastic pipes. With its convenient heat fusion connection, 50-year service life design, and low leakage rate, PE-RT pipes meet ISO 22391 and GB / T28799 standards, reducing costs by 20%-30% compared to PEX. They now occupy nearly half of the Chinese underfloor heating market share, becoming a cost-effective solution for diverse scenarios such as radiant heating and solar thermal systems.

[0003] Existing pipe extrusion equipment uses a sprinkler system to spray water to cool the pipes. The sprayed water flows into a storage tank after passing through a filter plate. When cleaning the filter material, the filter plate is removed by hand using a hand block. This facilitates pipe cooling and filtration of debris. However, when filter material accumulates on the filter plate, the machine needs to be shut down and the filter plate disassembled for cleaning. This results in poor filtration sustainability and reduces the working efficiency of the pipe extrusion equipment. Utility Model Content

[0004] The purpose of this invention is to provide an extrusion device for pipe production to solve the problems mentioned in the background art.

[0005] The technical solution adopted in this utility model is:

[0006] An extrusion device for pipe production includes: a device body, the device body comprising: an extrusion molding head disposed on the top of a base; a feeding port disposed on the top of the extrusion molding head; a traction component disposed at one end of the top of the base; a cleaning assembly disposed on one side of the extrusion molding head and located on the top of the base, the cleaning assembly comprising: a housing disposed on one side of the extrusion molding head and located on the top of the base; a cooling component disposed on the housing; a filter screen disposed inside the housing; a motor disposed on one side of the housing; a reciprocating screw disposed at the output end of the motor and penetrating the housing; a moving block sleeved on the outside of the reciprocating screw; a support rod disposed on the outside of the moving block; a cleaning brush disposed at the bottom of the support rod and located on top of the filter screen; and a feed inlet symmetrically disposed on both sides of the housing.

[0007] Optionally, the housing may have an internal limiting rod that works with the support rod and extends through the support rod.

[0008] Optionally, the top of the cleaning brush is provided with a slider, and the bottom of the support rod is provided with a first groove that cooperates with the slider.

[0009] Optionally, fixing bolts are provided on both sides of the support rod, and they pass through the slider and the first groove.

[0010] Optionally, Velcro is provided between the brush plate and the bristles of the cleaning brush, so that the brush plate and the bristles of the cleaning brush are bonded together.

[0011] Optionally, the two sides of the box are provided with receiving grooves that cooperate with the material guide port.

[0012] Optionally, the bottom of the receiving trough is provided with a sliding plate, and the top of the base is provided with a second sliding groove that cooperates with the sliding plate.

[0013] Optionally, the top of the side wall of the receiving trough is provided with a guide trough that matches the guide port.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The reciprocating screw is driven by a motor to rotate. The rotating reciprocating screw pushes the cleaning brush at the bottom of the support rod through the moving block to clean the impurities filtered out of the top of the filter screen. It also works with the feed inlet to clean the impurities out of the box. This makes it easier to clean the impurities filtered out of the top of the filter screen, increases the continuous filtering of cooling water containing mixed impurities by the filter screen, and improves the working efficiency of the extrusion equipment used for pipe production. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure in this application;

[0018] Figure 2 This is a schematic diagram of the structure of the filter screen in this application;

[0019] Figure 3 This is a schematic diagram of the support rod in this application.

[0020] Figure label:

[0021] 1. Equipment body; 11. Base; 12. Extrusion molding head; 13. Feed port; 14. Traction component; 15. Cooling component;

[0022] 2. Cleaning components; 21. Housing; 22. Filter screen; 23. Motor; 24. Reciprocating screw; 241. Moving block; 25. Support rod; 251. Limiting rod; 26. Cleaning brush; 261. Slider; 262. First slide groove; 263. Fixing bolt; 264. Velcro; 27. Guide port; 28. Receiving groove; 281. Guide groove opening; 29. ​​Slide plate; 291. Second slide groove. Detailed Implementation

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] Given that in the current technology, when filter material accumulates on the filter plate, the machine needs to be shut down and the filter plate needs to be disassembled and cleaned, resulting in poor filtration sustainability of the filter plate and thus reducing the working efficiency of the extrusion equipment used for pipe production.

[0026] like Figure 1-3As shown, this utility model embodiment provides an extrusion equipment for pipe production, including: an equipment body 1, the equipment body 1 including: an extrusion molding head 12 disposed on the top of a base 11; a feeding port 13 disposed on the top of the extrusion molding head 12; a traction component 14 disposed on one end of the top of the base 11; a cleaning component 2 disposed on one side of the extrusion molding head 12 and located on the top of the base 11, the cleaning component 2 including: a housing 21 disposed on one side of the extrusion molding head 12 and located on the top of the base 11; a cooling component 15 disposed on the housing 21; a filter screen 22 disposed inside the housing 21; a motor 23 disposed on one side of the housing 21; a reciprocating screw 24 disposed at the output end of the motor 23 and passing through the housing 21; a moving block 241 sleeved on the outside of the reciprocating screw 24; a support rod 25 disposed on the outside of the moving block 241; a cleaning brush 26 disposed at the bottom of the support rod 25 and located on the top of the filter screen 22; and a guide port 27 symmetrically disposed on both sides of the housing 21.

[0027] In use, the raw materials for producing PE-RT underfloor heating pipes are poured into the extrusion head 12 through the feeding port 13, and extruded through the extrusion head 12. The formed PE-RT underfloor heating pipes extend into the housing 21. The cooling component 15 sprays cooling water onto the formed PE-RT underfloor heating pipes for cooling and shaping, and the traction component 14 pulls the produced PE-RT underfloor heating pipes out. The cooling water mixed with impurities after spraying and cooling passes through the filter screen 22 to filter out the impurities. Then, the motor 23 is started, and the motor 23 drives the reciprocating screw 24 to rotate. The rotating reciprocating screw 24 pushes the cleaning brush 26 at the bottom of the support rod 25 through the moving block 241 to clean the impurities filtered out of the top of the filter screen 22. The guide port 27 cleans the impurities out of the housing 21, which facilitates the cleaning of the impurities filtered out of the top of the filter screen 22, increases the continuity of the filter screen 22 in filtering the cooling water mixed with impurities, and improves the working efficiency of the extrusion equipment for pipe production.

[0028] Specifically, the structure of the traction component 14 includes: a stabilizing frame, a bidirectional threaded rod fixedly connected inside the stabilizing frame, a rotating knob fixedly connected to the top of the bidirectional threaded rod, movable blocks movably connected to the outer walls of both ends of the bidirectional threaded rod, a connecting frame fixedly connected to one side of the movable block, a stabilizing pulley movably connected inside the connecting frame, a limiting block fixedly connected to one side of the connecting frame, and a limiting rod movably connected inside the limiting block. The working principle is that when the pipe enters the interior of the stabilizing frame, the bidirectional threaded rod is rotated by rotating the knob, thereby causing the movable block to move along the outer wall of the bidirectional threaded rod. At the same time, the limiting block and the limiting rod limit the connecting frame to move, thereby causing the stabilizing pulley to pull the pipe in the direction of the pipe. This is not shown in the attached drawings of the instruction manual.

[0029] Specifically, the structure of the cooling component 15 includes: a water pump, a connecting water pipe fixedly connected to the output end of the water pump, and a sprinkler frame fixedly connected to one end of the connecting water pipe. The working principle is that the water pump causes water to flow through the connecting water pipe into the interior of the sprinkler frame, and the sprinkler frame sprays water to cool the pipe. The sprayed water flows into the interior of the water storage tank through the filter plate, so that the cooling water inside the box 21 can be recycled. This is not shown in the attached drawings of the instruction manual.

[0030] Specifically, in this application, the cooling component 15 adopts spray cooling, which differs from water tank cooling in that it has a faster cooling speed, can quickly reduce the temperature of the pipe, prevent deformation, and is suitable for occasions with high requirements for cooling speed, especially when the pipe extrusion speed is fast.

[0031] Specifically, the main structure of the extrusion die head 12 includes: a die, a mandrel, a distributor, and a grid. Its working principle is as follows: continuous production is achieved through precise control of the flow, plasticization, and shaping of the molten plastic. The material is converted into a uniform annular laminar flow by the distributor, further plasticized by shear force in the compression zone, and pressure is established. Subsequently, it is formed into a tube blank through the annular gap formed by the mandrel and the die.

[0032] Furthermore, the housing 21 is equipped with a limiting rod 251 that works with the support rod 25 and passes through the support rod 25 to limit the support rod 25 and prevent the support rod 25 from rotating with the reciprocating screw 24.

[0033] Furthermore, a slider 261 is provided on the top of the cleaning brush 26, and a first groove 262 that matches the slider 261 is provided on the bottom of the support rod 25, so that the cleaning brush 26 and the support rod 25 can be slidably connected, which increases the convenience of disassembling and assembling the cleaning brush 26 and makes it easier to clean the impurities remaining on the cleaning brush 26.

[0034] Furthermore, fixing bolts 263 are provided on both sides of the support rod 25 and pass through the slider 261 and the first groove 262, so that the cleaning brush 26 is threadedly fixed to the support rod 25, which increases the stability of the cleaning brush 26 installed on the support rod 25.

[0035] Furthermore, Velcro 264 is provided between the brush plate and the bristles on the cleaning brush 26, so that the brush plate and the bristles on the cleaning brush 26 can be glued together, making it convenient to replace the severely worn bristles on the cleaning brush 26.

[0036] Furthermore, the two sides of the box 21 are provided with receiving grooves 28 that cooperate with the material guide port 27. Impurities swept out from the material guide port 27 will fall into the receiving grooves 28, thus facilitating the collection and processing of the swept-out impurities.

[0037] Furthermore, a sliding plate 29 is provided at the bottom of the receiving trough 28, and a second sliding groove 291 that matches the sliding plate 29 is provided at the top of the base 11, so that the receiving trough 28 and the base 11 can be slidably connected, which increases the stability of the receiving trough 28 placed on both sides of the box 21.

[0038] Furthermore, the top of the side wall of the receiving trough 28 is provided with a guide trough 281 that matches the guide port 27. The guide trough 281 facilitates the introduction of impurities swept out from the guide port 27 into the receiving trough 28, thus preventing impurities from accumulating on the top of the side wall of the receiving trough 28.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An extrusion apparatus for pipe production, comprising: The equipment body (1) includes: a base (11) with an extrusion molding head (12) on its top; The feeding port (13) is located at the top of the extrusion molding head (12); A traction member (14) is disposed at one top end of the base (11); The feature is that a cleaning component (2) is provided on one side of the extrusion molding head (12) and located on the top of the base (11), the cleaning component (2) comprising: The housing (21) is disposed on one side of the extrusion molding head (12) and located on the top of the base (11); A cooling component (15) is disposed on the housing (21); A filter screen (22) is disposed inside the housing (21); The motor (23) is located on one side of the housing (21); A reciprocating lead screw (24) is located at the output end of the motor (23) and passes through the housing (21); The movable block (241) is sleeved on the outside of the reciprocating lead screw (24); A support rod (25) is disposed on the outside of the movable block (241); A cleaning brush (26) is provided at the bottom of the support rod (25) and at the top of the filter screen (22); The feed inlet (27) is symmetrical to both sides of the box body (21).

2. The extrusion equipment for pipe production according to claim 1, characterized in that, The housing (21) is provided with a limiting rod (251) that cooperates with the support rod (25) and passes through the support rod (25).

3. The extrusion equipment for pipe production according to claim 2, characterized in that, The cleaning brush (26) has a slider (261) at the top, and the support rod (25) has a first groove (262) at the bottom that cooperates with the slider (261).

4. The extrusion equipment for pipe production according to claim 3, characterized in that, The support rod (25) is provided with fixing bolts (263) on both sides, and passes through the slider (261) and the first groove (262).

5. An extrusion device for pipe production according to claim 2, characterized in that, Velcro (264) is provided between the brush plate and the bristles on the cleaning brush (26) so that the brush plate and the bristles on the cleaning brush (26) are bonded together.

6. The extrusion equipment for pipe production according to claim 1, characterized in that, The box body (21) is provided with receiving grooves (28) on both sides to cooperate with the material guide port (27).

7. An extrusion apparatus for pipe production according to claim 6, characterized in that, The bottom of the receiving trough (28) is provided with a sliding plate (29), and the top of the base (11) is provided with a second sliding groove (291) that cooperates with the sliding plate (29).

8. An extrusion apparatus for pipe production according to claim 6, characterized in that, The top of the side wall of the receiving groove (28) is provided with a guide groove opening (281) that matches the guide opening (27).