A polyurethane waterproof coating delivery pipe

Abstract

The present invention relates to the field of pipeline technology, and specifically to a polyurethane waterproof coating delivery pipe, comprising a pipe body and a discharge assembly; the pipe body comprises an outer pipe, an inner pipe and a discharge shell, and the inner wall of the outer pipe is provided with two placement surfaces facing each other; the discharge shell is connected to the outer pipe, and a working space connected to the interior of the outer pipe is provided in the discharge shell, and the two side walls of the working space are respectively connected to the two placement surfaces to form the same plane; the inner pipe is a flexible elastic pipe; the discharge assembly has two groups and is mirror-imaged up and down; the discharge assembly has extrusion rollers and track members that are mirror-imaged left and right; the extrusion rollers run along the track members; the present invention has two groups of discharge assemblies that are mirror-imaged up and down, and cooperates with the flexible and elastic inner pipe, and the two extrusion rollers squeeze the inner pipe up and down and run along the track members to extrude excess polyurethane waterproof coating; the inner pipe can also rebound and restore its original shape under the action of its own elasticity to avoid sticking together.

Description

Technical Field

[0001] The present invention relates to the technical field of pipelines, and in particular to a polyurethane waterproof coating delivery pipe. Background Art

[0002] Polyurethane coatings are a common type of coating, categorized as either two-component or one-component. Two-component polyurethane coatings generally consist of two components: an isocyanate prepolymer (also known as a low-molecular-weight urethane polymer) and a hydroxyl-containing resin, commonly referred to as the curing agent and main agent. This type of coating is available in numerous varieties and has a wide range of applications. Depending on the hydroxyl-containing component, it can be categorized as acrylic polyurethane, alkyd polyurethane, polyester polyurethane, polyether polyurethane, and epoxy polyurethane. These coatings generally exhibit excellent mechanical properties, a high solids content, and a comprehensive range of performance characteristics. They represent a promising coating category, with key applications including wood coatings, automotive refinish coatings, anti-corrosion coatings, floor coatings, electronic coatings, specialty coatings, and polyurethane waterproofing.

[0003] In the prior art, the polyurethane waterproof coating remaining in the pipeline after delivery is easily solidified. After long-term repeated curing, the internal diameter of the pipeline gradually decreases, causing inconvenience in use. Therefore, it is necessary to design a polyurethane waterproof coating delivery pipe that is easy to discharge. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a polyurethane waterproof coating delivery pipe which is convenient for discharging.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A polyurethane waterproof coating delivery pipe, comprising a pipe body and a discharge assembly;

[0007] The tube body includes an outer tube, an inner tube and a discharge shell. The outer tube is a waist-shaped hollow tube, and the inner wall of the outer tube has two mutually opposite placement surfaces. The discharge shell is connected to the outer tube. The tube body includes a feed end opened in the discharge shell and a discharge end opened at the end of the outer tube. The feed end of the discharge shell and the discharge end of the outer tube are connected to form a conveying space. A working space connected to the interior of the outer tube is provided in the discharge shell, and the two side walls of the working space are respectively connected to the two placement surfaces to form the same plane. The working space and the conveying space are perpendicular to each other. The inner tube is a flexible elastic pipe, one end of the inner tube is connected to the feed end and is connected to the discharge end after passing through the conveying space.

[0008] The discharging assembly has two groups and is mirror-imaged up and down; the discharging assembly includes a squeeze roller and a track member mirror-imaged left and right; the track member is provided with a limit groove and a rack; the track member includes a vertical portion and a horizontal portion, the vertical portion is provided on the side wall of the workspace, and the horizontal portion is provided on the placement surface, and the connection between the vertical portion and the horizontal portion is an arc transition;

[0009] The initial position of the extrusion roller is located in the working space; the extrusion roller includes a flexible outer roller body, a motor, a gear and a limiting shaft, and the two ends of the limiting shaft respectively cooperate with the limiting grooves of the two tracks to realize the limitation of the extrusion roller; there are two gears and they are arranged on the limiting shaft and cooperate with the racks of the two track parts. The motor and the limiting shaft drive the gear to rotate coaxially, and the flexible outer roller body is rotatably sleeved outside the motor; when discharge is required, the motor rotates to drive the gear to rotate and then push the extrusion roller to run. When the flexible outer roller bodies of the upper and lower sets of discharge components are fitted to each other, they can run along the horizontal part to extrude the polyurethane waterproof coating in the inner tube and then return to the working space along the track part.

[0010] Preferably, the polyurethane waterproof coating delivery pipe also includes an air pump, and the working space is a sealed space; a joint connected to the air pump is provided on the discharge shell; the air pump is connected to the working space through the joint; when the polyurethane waterproof coating delivery pipe feeds material, the air pump delivers gas to the working space to inflate the working space.

[0011] Preferably, a pressure relief valve is provided on the discharge shell; when discharge is required, the air pump is closed and the pressure relief valve is opened.

[0012] Preferably, after the discharge is completed, the pressure relief valve is closed and the air pump pumps air outward.

[0013] Preferably, a pressure sensor is also provided in the working space, and when the polyurethane waterproof coating delivery pipe is feeding, the air pressure in the working space is approximately equal to the delivery pressure in the inner tube.

[0014] Preferably, the edges of the track members are polished.

[0015] Preferably, a valve is provided on the feed end, and the valve is closed first when discharge is required.

[0016] Preferably, the air pump is connected to the working space through a filter.

[0017] Preferably, the flexible outer roller is rotatably sleeved outside the motor via a bearing.

[0018] Preferably, the rack surface has a self-lubricating coating.

[0019] The beneficial effects of the present invention are as follows: the discharge assembly has two groups and is arranged in mirror images up and down, and is combined with a flexible and elastic inner tube, so that the inner tube can transport the polyurethane waterproof coating. After the transportation is completed, the two squeezing rollers squeeze it up and down and run along the track member to extrude excess polyurethane waterproof coating, thereby preventing the inner diameter from shrinking; at the same time, the squeezed inner tube can also rebound to its original shape under the action of its own elasticity to avoid sticking together; and through the waist-shaped hollow pipe, the conveying pressure of the polyurethane waterproof coating can be guaranteed while increasing the vertical space to facilitate the passage of the squeezing roller; the working space and the conveying space are perpendicular to each other, which can reduce the lack of the force-bearing area of ​​the inner tube, ensure the force effect, and avoid the inner tube from deforming toward the working space due to the lack of force-bearing area combined with the flexible elastic pipe; through the cooperation of the gear and the rack, the effect of limiting and controlling can be achieved; through the flexible outer roller body, the two flexible outer roller bodies can cooperate with each other so that the inner tube can be thoroughly squeezed while avoiding damage to the inner tube due to hard squeezing, thereby ensuring the service life of the inner tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram from a first angle of a polyurethane waterproof coating delivery pipe according to a specific embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram from a first angle of a polyurethane waterproof coating delivery pipe according to a specific embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the interior of the working space of a polyurethane waterproof coating delivery pipe according to a specific embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the cooperation between the extrusion roller and the track member of a polyurethane waterproof coating delivery pipe according to a specific embodiment of the present invention;

[0024] Explanation of reference numerals: 1. Tube body; 11. Outer tube; 12. Discharge shell; 13. Placement surface; 14. Working space; 141. Joint; 142. Pressure relief valve; 2. Discharge assembly; 21. Extrusion roller; 211. Outer roller body; 212. Motor; 213. Gear; 214. Limiting shaft; 22. Track member; 221. Vertical part; 222. Horizontal part; 23. Limiting groove; 24. Rack. DETAILED DESCRIPTION

[0025] To illustrate the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and accompanying drawings.

[0026] Please refer to Figures 1 to 4 , a polyurethane waterproof coating delivery pipe, comprising a pipe body 1 and a discharge assembly 2;

[0027] The tube body 1 includes an outer tube 11, an inner tube and a discharge shell 12. The outer tube 11 is a waist-shaped hollow tube, and the inner wall of the outer tube 11 has two placement surfaces 13 facing each other; the discharge shell 12 is connected to the outer tube 11, and the tube body 1 includes a feed end opened in the discharge shell 12 and a discharge end opened at the end of the outer tube 11. The feed end of the discharge shell 12 and the discharge end of the outer tube 11 are connected to form a conveying space; a working space 14 connected to the interior of the outer tube 11 is provided in the discharge shell 12, and the two side walls of the working space 14 are respectively connected to the two placement surfaces 13 to form the same plane; the working space 14 and the conveying space are perpendicular to each other; the inner tube is a flexible elastic pipe, one end of the inner tube is connected to the feed end and is connected to the discharge end after passing through the conveying space;

[0028] The discharge assembly 2 has two groups and is mirror-imaged up and down; the discharge assembly 2 includes a squeeze roller 21 and a track member 22 mirror-imaged left and right; the track member 22 is provided with a limiting groove 23 and a rack 24; the track member 22 includes a vertical portion 221 and a horizontal portion 222, the vertical portion 221 is provided on the side wall of the workspace 14, and the horizontal portion 222 is provided on the placement surface 13, and the connection between the vertical portion 221 and the horizontal portion 222 is a circular arc transition;

[0029] The initial position of the squeezing roller 21 is located in the working space 14; the squeezing roller 21 includes a flexible outer roller body 211, a motor 212, a gear 213 and a limiting shaft 214, and the two ends of the limiting shaft 214 respectively cooperate with the limiting grooves 23 of the two tracks to realize the limitation of the squeezing roller 21; there are two gears 213 and they are arranged on the limiting shaft 214 and then cooperate with the racks 24 of the two track parts 22. The motor 212 and the limiting shaft 214 coaxially drive the gear 213 to rotate, and the flexible outer roller body 211 is rotatably sleeved outside the motor 212; when discharging is required, the motor 212 rotates to drive the gear 213 to rotate and then push the squeezing roller 21 to run. When the flexible outer roller bodies 211 of the upper and lower groups of discharging components 2 are fitted with each other, they can run along the horizontal part 222 to extrude the polyurethane waterproof coating in the inner tube and then return to the working space 14 along the track part 22.

[0030] From the above description, it can be seen that the discharge assembly 2 has two groups and is mirror-imaged up and down, and cooperates with a flexible and elastic inner tube. The inner tube can transport the polyurethane waterproof coating. After the transportation is completed, the two squeezing rollers 21 move in a mirror-image manner. The outer surface of the flexible outer roller body 211 at the corner of the arc transition squeezes the inner tube up and down and runs along the track member 22 to extrude excess polyurethane waterproof coating, thereby preventing the inner diameter from shrinking; at the same time, the squeezed inner tube can also rebound to its original shape under the action of its own elasticity to avoid sticking together; and the waist-shaped hollow pipe can ensure that the polyurethane waterproof coating While increasing the conveying pressure of the water-based paint, the vertical space is increased to facilitate the passage of the squeezing roller 21; the working space 14 and the conveying space are perpendicular to each other, which can reduce the lack of the force-bearing area of ​​the inner tube, ensure the force effect, and avoid the inner tube from deforming toward the working space 14 due to the lack of force-bearing area combined with the flexible elastic pipe; through the cooperation of the gear 213 and the rack 24, the effect of limiting and controlling can be achieved; through the flexible outer roller body 211, the two flexible outer roller bodies 211 can cooperate with each other so that the inner tube can be thoroughly squeezed while avoiding damage to the inner tube due to hard squeezing, thereby ensuring the service life of the inner tube.

[0031] Furthermore, the polyurethane waterproof coating delivery pipe also includes an air pump, and the working space 14 is a sealed space; a connector 141 connected to the air pump is provided on the discharge shell 12; the air pump is connected to the working space 14 through the connector 141; when the polyurethane waterproof coating delivery pipe feeds material, the air pump delivers gas to the working space 14 to inflate the working space 14.

[0032] From the above description, it can be seen that by inflating the working space 14, the force at each angle of the inner tube can be more uniform, which facilitates the cylindrical transportation method. At the same time, it also avoids the situation where the force area between the inner tube and the working space 14 is small and deformation or rupture is easy to occur here.

[0033] Furthermore, a pressure relief valve 142 is provided on the discharge shell 12; when discharge is required, the air pump is closed and the pressure relief valve 142 is opened.

[0034] From the above description, it can be seen that by releasing the pressure, it is avoided that the pressure inside the inner tube decreases during discharge, and the inner tube may have inconsistent elasticity, causing local tightening or even closing, which makes discharge not smooth.

[0035] Furthermore, after the discharge is completed, the pressure relief valve 142 is closed and the air pump pumps air outward.

[0036] From the above description, it can be seen that by vacuuming the air, a negative pressure is formed inside, which can facilitate the restoration of the inner tube to its original state; it avoids the situation where the inner tube is partially adhered together and becomes scrapped after being completely dried because the polyurethane waterproof coating is too sticky.

[0037] Furthermore, a pressure sensor is also provided in the working space 14. When the polyurethane waterproof coating delivery pipe is feeding, the air pressure in the working space 14 is approximately equal to the delivery pressure in the inner pipe.

[0038] From the above description, it can be seen that by controlling the air pressure and the delivery pressure, pressure balance can be achieved, thereby preventing the inner tube from being damaged or excessively deformed due to pressure difference, and extending the service life.

[0039] Furthermore, the edge of the track member 22 is polished.

[0040] As can be seen from the above description, the polishing process can prevent the sharp edges of the rack 24 from damaging or puncturing the inner tube.

[0041] Furthermore, a valve is provided on the feed end, and the valve is closed first when discharge is required.

[0042] As can be seen from the above description, by closing the valve, the polyurethane waterproof coating can be prevented from being squeezed back into the original conveying device or storage box, that is, backflow can be avoided.

[0043] Furthermore, the air pump is connected to the working space 14 through a filter.

[0044] It can be seen from the above description that the provision of the filter can prevent impurities from entering the working space 14 .

[0045] Furthermore, the flexible outer roller 211 is rotatably sleeved outside the motor 212 via a bearing.

[0046] Furthermore, the surface of the rack 24 has a self-lubricating coating.

[0047] As can be seen from the above description, the provision of the self-lubricating coating can avoid the introduction of substances such as lubricating oil or grease that may oxidize, deteriorate or drip over time, thereby avoiding corrosion to the inner tube. Example 1

[0048] A polyurethane waterproof coating delivery pipe, comprising a pipe body 1 and a discharge assembly 2;

[0049] The tube body 1 includes an outer tube 11, an inner tube and a discharge shell 12. The outer tube 11 is a waist-shaped hollow tube, and the inner wall of the outer tube 11 has two placement surfaces 13 facing each other; the discharge shell 12 is connected to the outer tube 11, and the tube body 1 includes a feed end opened in the discharge shell 12 and a discharge end opened at the end of the outer tube 11. The feed end of the discharge shell 12 and the discharge end of the outer tube 11 are connected to form a conveying space; a working space 14 connected to the interior of the outer tube 11 is provided in the discharge shell 12, and the two side walls of the working space 14 are respectively connected to the two placement surfaces 13 to form the same plane; the working space 14 and the conveying space are perpendicular to each other; the inner tube is a flexible elastic pipe, one end of the inner tube is connected to the feed end and is connected to the discharge end after passing through the conveying space;

[0050] The discharge assembly 2 has two groups and is mirror-imaged up and down; the discharge assembly 2 includes a squeeze roller 21 and a track member 22 mirror-imaged left and right; the track member 22 is provided with a limiting groove 23 and a rack 24; the track member 22 includes a vertical portion 221 and a horizontal portion 222, the vertical portion 221 is provided on the side wall of the workspace 14, and the horizontal portion 222 is provided on the placement surface 13, and the connection between the vertical portion 221 and the horizontal portion 222 is a circular arc transition;

[0051] The initial position of the squeezing roller 21 is located in the working space 14; the squeezing roller 21 includes a flexible outer roller body 211 (such as a silicone roller, a rubber roller, etc., mainly a soft one), a motor 212, a gear 213 and a limiting shaft 214, and the two ends of the limiting shaft 214 respectively cooperate with the limiting grooves 23 of the two tracks to realize the limiting of the squeezing roller 21; there are two gears 213 and they are arranged on the limiting shaft 214 and then cooperate with the racks 24 of the two track parts 22. The motor 212 and the limiting shaft 214 coaxially drive the gear 213 to rotate, and the flexible outer roller body 211 is rotatably sleeved outside the motor 212; when discharging is required, the motor 212 rotates to drive the gear 213 to rotate and then push the squeezing roller 21 to run. When the flexible outer roller bodies 211 of the upper and lower groups of discharging components 2 are in contact with each other, they can run along the horizontal part 222 to extrude the polyurethane waterproof coating in the inner tube and then return to the working space 14 along the track part 22. Example 2

[0052] A polyurethane waterproof coating delivery pipe, which is the same as that of the first embodiment and is not repeated here, further comprising:

[0053] The polyurethane waterproof coating delivery pipe also includes an air pump, and the working space 14 is a sealed space; a joint 141 connected to the air pump is provided on the discharge shell 12; the air pump is connected to the working space 14 through the joint 141; when the polyurethane waterproof coating delivery pipe feeds material, the air pump delivers gas to the working space 14 to inflate the working space 14.

[0054] The discharge shell 12 is provided with a pressure relief valve 142 ; when discharge is required, the air pump is closed and the pressure relief valve 142 is opened.

[0055] When the discharge is completed, the pressure relief valve 142 is closed and the air pump starts to pump air outward. Example 3

[0056] A polyurethane waterproof coating delivery pipe, which is the same as the second embodiment and is not repeated here, further comprising:

[0057] A pressure sensor is also provided in the working space 14. When the polyurethane waterproof coating delivery pipe is feeding, the air pressure in the working space 14 is approximately equal to the delivery pressure in the inner pipe.

[0058] The edges of the track member 22 are polished.

[0059] The feed end is provided with a valve, which is closed first when discharge is required.

[0060] The air pump is communicated with the working space 14 through a filter.

[0061] The flexible outer roller 211 is rotatably sleeved on the outside of the motor 212 via a bearing.

[0062] The surface of the rack 24 has a self-lubricating coating.

[0063] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A polyurethane waterproof coating delivery pipe, characterized in that: It includes a tube body and a discharge assembly; The tube body includes an outer tube, an inner tube and a discharge shell. The outer tube is a waist-shaped hollow tube, and the inner wall of the outer tube has two mutually opposite placement surfaces. The discharge shell is connected to the outer tube. The tube body includes a feed end opened in the discharge shell and a discharge end opened at the end of the outer tube. The feed end of the discharge shell and the discharge end of the outer tube are connected to form a conveying space. A working space connected to the interior of the outer tube is provided in the discharge shell, and the two side walls of the working space are respectively connected to the two placement surfaces to form the same plane. The working space and the conveying space are perpendicular to each other. The inner tube is a flexible elastic pipe, one end of the inner tube is connected to the feed end and is connected to the discharge end after passing through the conveying space. The discharging assembly has two groups and is mirror-imaged up and down; the discharging assembly includes a squeeze roller and a track member mirror-imaged left and right; the track member is provided with a limit groove and a rack; the track member includes a vertical portion and a horizontal portion, the vertical portion is provided on the side wall of the workspace, and the horizontal portion is provided on the placement surface, and the connection between the vertical portion and the horizontal portion is an arc transition; The initial position of the extrusion roller is located in the working space; the extrusion roller includes a flexible outer roller body, a motor, a gear and a limiting shaft, and the two ends of the limiting shaft respectively cooperate with the limiting grooves of the two tracks to realize the limitation of the extrusion roller; there are two gears and they are arranged on the limiting shaft and cooperate with the racks of the two track parts. The motor and the limiting shaft drive the gear to rotate coaxially, and the flexible outer roller body is rotatably sleeved outside the motor; when discharge is required, the motor rotates to drive the gear to rotate and then push the extrusion roller to run. When the flexible outer roller bodies of the upper and lower sets of discharge components are fitted to each other, they can run along the horizontal part to extrude the polyurethane waterproof coating in the inner tube and then return to the working space along the track part.

2. The polyurethane waterproof coating delivery pipe according to claim 1, characterized in that: The polyurethane waterproof coating delivery pipe also includes an air pump, and the working space is a sealed space; a joint connected to the air pump is provided on the discharge shell; the air pump is connected to the working space through the joint; when the polyurethane waterproof coating delivery pipe feeds material, the air pump delivers gas to the working space to inflate the working space.

3. The polyurethane waterproof coating delivery pipe according to claim 2, characterized in that: The discharge shell is provided with a pressure relief valve; when discharge is required, the air pump is closed and the pressure relief valve is opened.

4. The polyurethane waterproof coating delivery pipe according to claim 3, characterized in that: When the discharge is completed, the pressure relief valve is closed and the air pump is pumped outward.

5. The polyurethane waterproof coating delivery pipe according to claim 2, characterized in that: A pressure sensor is also provided in the working space. When the polyurethane waterproof coating delivery pipe is feeding, the air pressure in the working space is approximately equal to the delivery pressure in the inner pipe.

6. The polyurethane waterproof coating delivery pipe according to claim 1, characterized in that: The edges of the track members are polished.

7. The polyurethane waterproof coating delivery pipe according to claim 1, characterized in that: The feed end is provided with a valve, which is closed first when discharge is required.

8. The polyurethane waterproof coating delivery pipe according to claim 2, characterized in that: The air pump is communicated with the working space through a filter.

9. The polyurethane waterproof coating delivery pipe according to claim 1, characterized in that: The flexible outer roller is rotatably sleeved outside the motor via a bearing.

10. The polyurethane waterproof coating delivery pipe according to claim 1, characterized in that: The surface of the rack is provided with a self-lubricating coating.

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