Portable pipeline inner wall spraying device

Abstract

The utility model discloses a portable pipeline inner wall spraying device which comprises a hollow rod, an adapter rod, a left adapter shaft sleeve, a right adapter shaft sleeve, a filter element, a spiral column, a spraying head, an opening nut, a plurality of connecting rods and a plurality of bearing pulleys. According to the utility model, the plurality of pairs of connecting rod arms are arranged between the pair of adapter shaft sleeves, and the pair of bearing pulleys are regularly arranged at the outer ends of the plurality of pairs of connecting rod arms, so that the included angle between the plurality of pairs of connecting rod arms can be quickly adjusted through the movable adapter shaft sleeves, and the positions of the plurality of bearing pulleys at the outermost ends of the connecting rod arms can be adjusted; and the multiple bearing pulleys are attached to the inner wall of the pipeline, so that the spraying device rapidly slides between the inner walls of the pipeline, and spraying treatment is conducted on the inner walls of the pipeline. According to the portable pipeline inner wall spraying device, the connecting rod arm can be rapidly unfolded and rapidly stored through the movable adapter shaft sleeve, and therefore the portable pipeline inner wall spraying device is convenient to carry, transport and store.

Description

Technical Field

[0001] This utility model relates to the field of surface spraying technology, specifically to a portable pipe inner wall spraying device. Background Technology

[0002] To extend the service life of pipelines, it is generally necessary to perform surface treatment on the inner wall of the pipeline. This is achieved by spraying a wear-resistant and corrosion-resistant coating onto the inner wall of the pipeline, thereby increasing its service life.

[0003] Existing portable pipe interior spraying devices are generally quite large, making them inconvenient to transport and carry, and also more laborious to use. Furthermore, these devices typically employ a single pulley structure, where the pulley bears significant pressure due to its weight, leading to frequent damage. Replacing a damaged pulley is also quite troublesome. Utility Model Content

[0004] This utility model provides a portable pipe inner wall spraying device that is small in size, lightweight, has a long service life, and is easy to disassemble and maintain.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A portable pipe inner wall spraying device includes a hollow rod, a connecting rod, left and right connecting bushings, a filter element, a spiral column, a spray head, an open nut, several connecting rods, and several bearing pulleys;

[0007] The adapter rod is installed and fixed at the right end of the hollow rod for connecting components.

[0008] The filter element is installed in the internal flow channel of the adapter rod for filtering the material.

[0009] The spiral column is installed in the inner cavity of the nozzle to change the flow direction of the material.

[0010] The open nut is fixed to the right end of the adapter rod, and the filter element and the spray head are confined between the adapter rod and the open nut. The front end of the spray head is provided with a discharge port, which communicates with its inner cavity. The front end of the spray head extends from the open nut, and the material is sprayed out from the discharge port to coat the inner wall of the pipe. The material flows through the internal flow channels of the hollow rod and the adapter rod in sequence, is filtered by the filter element in the adapter rod, flows into the inner cavity of the spray head, and is then conveyed by the spiral column before being sprayed out from the discharge port of the spray head.

[0011] The left and right transition bushings include a left transition bushing and a right transition bushing. The left transition bushing is fitted onto the hollow rod and slides along the hollow rod. It is positioned and fixed by bolts to form a movable transition bushing. The right transition bushing is fitted onto the transition rod and fixed to the transition rod by bolts to form a fixed transition bushing.

[0012] One end of each of the plurality of connecting rods is rotatably connected to the left and right rotating bushings via a first connecting rod pin; and rotates around the first connecting rod pin; the plurality of bearing pulleys are mounted on the other end of the plurality of connecting rods via pulley pins, and rotate around the pulley pins.

[0013] The connecting rods on the left and right transition bushings are matched one-to-one and arranged to cross each other to form several pairs of cross-link arms. The connecting rod arms are connected to each other through the second connecting rod pin, and the cross-link arms rotate around the second connecting rod pin as an axis.

[0014] The movable adapter sleeve drives the plurality of pairs of connecting rod arms to rotate in a cross manner.

[0015] Furthermore, the hollow rod is provided with a hollow rod flow channel that facilitates the flow of material through the left and right sides, and its left and right ends are provided with threads to form a hollow rod threaded rod part that is easy to connect.

[0016] One end of the adapter rod is provided with a threaded hole that mates with the hollow rod, and the other end is provided with a threaded rod portion. A flow channel for the material is provided through the left and right sides. The adapter rod is screwed and fixed together with the threaded rod portion of the hollow rod through its threaded hole. The flow channel of the adapter rod and the flow channel of the hollow rod are interconnected.

[0017] The adapter rod flow channel communicates with the inner cavity of the nozzle through the filter element. The filter element and the nozzle are installed and fixed between the adapter rod and the open nut through the open nut. The rear end of the nozzle abuts against the filter element, thereby pressing and fixing the filter element in the adapter rod flow channel.

[0018] Furthermore, a pair of bearing pulleys are mounted on the outer end of the connecting rod via the pulley pin. The pair of bearing pulleys are located on the front and rear sides of the connecting rod and rotate around the pulley pin.

[0019] Furthermore, the left end of the adapter rod is provided with an outwardly protruding polygonal column boss, and the right end is the adapter rod section. The left side of the adapter rod section is designed with a smooth surface to form a smooth rod section, and the right side of the rod section is designed with a threaded surface to form a threaded rod section. The fixing adapter bushing passes through the threaded rod section of the adapter rod and is fitted onto the smooth rod section of the adapter rod. The threaded rod section of the adapter rod is engaged with the threaded hole of the open nut and tightened for fixation.

[0020] Furthermore, the outer surface of the left and right adapter bushings is provided with a plurality of connecting rod adapter bosses arranged in a circumferential array to connect with the connecting rod. The connecting rod adapter bosses are regularly provided with connecting rod slots in the middle to facilitate the insertion of the connecting rod. The connecting rod is inserted and installed in the connecting rod slots, and passes through the connecting rod adapter bosses and the connecting rod via the first connecting rod pin, thereby installing and connecting the connecting rod on the connecting rod adapter bosses. The connecting rod rotates around the first connecting rod pin as an axis between the connecting rod slots of the connecting rod adapter bosses.

[0021] Furthermore, one end of the adapter bushing is regularly provided with an outwardly protruding polygonal flange boss, and the plurality of connecting rod adapter bosses are arranged in a circumferential array on the outside of the polygonal flange boss.

[0022] Furthermore, the first connecting rod pin, the second connecting rod pin, and the pulley pin are all flat-headed pins with holes, and are locked and fixed by cooperating with a chuck or lead wire.

[0023] Furthermore, the engagement of the first connecting rod pin, the second connecting rod pin, and the pulley pin with the chuck or wire can be replaced with a bolt and nut engagement.

[0024] Preferably, the left and right transition bushings are provided with three pairs of connecting rod arms.

[0025] The beneficial effects of this utility model are:

[0026] This invention features several pairs of connecting arms positioned between a pair of adapter sleeves, with a pair of bearing pulleys regularly arranged at the outer ends of these arms. The movable adapter sleeves allow for rapid adjustment of the angle between the connecting arms, thereby adjusting the position of the bearing pulleys at the outermost ends of the arms. This ensures the bearing pulleys are in contact with the inner wall of the pipe, enabling the spraying device to slide rapidly along the pipe's inner wall for spraying. The movable adapter sleeves also allow for quick deployment and retraction of the connecting arms, facilitating the carrying, transportation, and storage of this portable pipe inner wall spraying device.

[0027] The device employs a pair of bearing pulleys, which significantly enhances the smoothness and stability of the entire system compared to a single pulley. Furthermore, the use of plastic-coated bearing pulleys instead of ordinary pulleys further improves the device's smoothness and stability. Attached Figure Description

[0028] Figure 1 This is an exploded structural diagram of the present invention;

[0029] Figure 2 for Figure 1 The combined state diagram;

[0030] Figure 3 for Figure 2 Front view;

[0031] Figure 4 for Figure 3 A sectional view along the AA direction;

[0032] Figure 5 for Figure 2 Enlarged structural diagram of the middle part;

[0033] Figure 6 for Figure 2 Storage status diagram;

[0034] The diagram is marked as follows:

[0035] 1. Hollow rod; 101. Thread; 2. Adapter rod; 3. Adapter bushing; 4. Filter element; 5. Spiral column; 6. Spray nozzle; 7. Open nut; 8. Connecting rod; 9. Bearing pulley; 10. Bolt.

[0036] 31. Movable adapter sleeve; 32. Fixed adapter sleeve; 81. First connecting rod pin; 82. Second connecting rod pin; 91. Pulley pin;

[0037] 101. Threaded part; 301. Connecting rod adapter boss; 302. Polygonal flange boss. Detailed Implementation

[0038] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0040] like Figure 1-6As shown, this utility model discloses a portable pipe inner wall spraying device, including a hollow rod 1, an adapter rod 2, front and rear adapter bushings 3, a filter element 4, a spiral column 5, a spray head 6, an open nut 7, several connecting rods 8, and several bearing pulleys 9. The hollow rod 1 serves as the pipeline of the spraying device, used to transport the coating material. It has hollow rod flow channels running through its left and right sides to facilitate the flow of the material. Both ends of the hollow rod are provided with threads 101, thus forming threaded rods at both ends.

[0041] Furthermore, the adapter rod 2 is used for the interchangeable mounting of the adapter sleeve 3, the filter element 4, and the open nut 7; one end of it has a threaded hole, and the other end has a threaded rod. For example... Figure 1 and Figure 4 As shown, the left end of the adapter rod 2 is provided with a threaded hole that mates with the hollow rod 1, and the right end is provided with a threaded rod that mates with the open nut 7. The threaded hole at the left end of the adapter rod 2 is tightened to mate with the threaded rod at the right end of the hollow rod 1, thereby fixing it to the right end of the hollow rod 1; the threaded rod at the right end of the adapter rod 2 is tightened to mate with the threaded hole at the left end of the open nut 7, thereby fixing the open nut 7 to its right end.

[0042] Preferably, a sealing ring for sealing is regularly arranged between the adapter rod 2 and the hollow rod 1. Alternatively, sealing can be achieved by wrapping an external waterstop.

[0043] Furthermore, the left and right ends of the adapter rod 2 are provided with through openings, thereby forming an adapter rod flow channel inside to facilitate the flow of coating material. The adapter rod flow channel is connected to the hollow rod flow channel.

[0044] Furthermore, the filter element 4 is inserted and installed in the right port of the adapter rod flow channel to filter the coating material during the process, thereby filtering out larger particles in the coating material. On the one hand, this avoids damage to the inner wall of the pipe caused by larger particles, and on the other hand, it can improve the smoothness or gloss of the inner wall of the pipe after spraying.

[0045] Preferably, the filter element 4 is a spray gun filter element with a mesh size of 60 or higher. It is inserted into the right port of the adapter rod 2 and pressed and fixed in the right port of the adapter rod 2 by the spray head 6. Then, the filter element 4, the spiral column 5 and the spray head 6 are together restricted between the adapter rod 2 and the open nut 7 by the open nut 7. The front end of the spray head 6 extends out of the open nut 5 for spraying material outward.

[0046] Furthermore, the left end of the adapter rod 2 is thickened and features a polygonal column design, making it easier to tighten and install the adapter rod 2 onto the right end of the hollow rod 1 using tools. A hexagonal column design is preferred, facilitating the use of a wrench to securely tighten and connect it to the hollow rod 1.

[0047] Furthermore, such as Figure 1As shown, the right end of the adapter rod 2 has a smooth surface on the left side and a threaded surface on the right side, thus forming a smooth rod on the left end and a threaded rod on the right end. The threaded rod of the adapter rod 2 is screwed together with the open nut 7, while the smooth rod of the adapter rod is connected to the adapter sleeve 3, allowing the adapter sleeve 3 to be fitted onto the smooth rod area on the left end of the adapter rod.

[0048] Furthermore, such as Figure 1 and Figure 6 As shown, one of the left and right transition sleeves 3 passes through the hollow rod 1 and is slidably mounted on the hollow rod 1, and is positioned and fixed by bolts 10, thus forming a movable transition sleeve 31; the other passes through the threaded rod of the transition rod 2 and is fixedly mounted on the smooth rod of the transition rod 2 by bolts 10, thus forming a fixed transition sleeve 32. The movable transition sleeve 31 and the fixed transition sleeve 32 are coaxially and symmetrically arranged, facilitating the one-to-one connection of several connecting rods 8 to form several pairs of intersecting connecting rod arms.

[0049] Furthermore, one end of the connecting rod 8 is rotatably connected to the adapter sleeve 3 via the first connecting rod pin 81 and rotates around the first connecting rod pin 81; the other end is connected to a pair of bearing pulleys 9 via a pulley pin 91. The pair of bearing pulleys 9 are arranged on the front and rear sides of the connecting rod 8 and rotate around the pulley pin 91.

[0050] Furthermore, the movable adapter sleeve 31 and the fixed adapter sleeve 32 are connected one by one to form several pairs of intersecting link arms. Each pair of link arms consists of two intersecting link arms with through holes regularly arranged in the middle. They are then connected to each other by the second link pin 82. Each pair of link arms is driven by the movable adapter sleeve 31 to rotate around the first link pin 81 and the second link pin 82. This allows the movable adapter sleeve 31 to drive and adjust the angle between each pair of link arms, thereby adjusting the angle between the link 8 and the hollow rod. Ultimately, this adjusts the distance between the bearing pulleys 9 and the hollow rod 1, thus matching the inner diameter of the pipe and ensuring that the bearing pulleys 9 are in contact with the inner wall of the pipe.

[0051] Furthermore, the aforementioned pulley pin 91, first connecting rod pin 81, and second connecting rod pin 82 are all flat-headed pins with holes. One end is a flat head with a larger diameter, used to abut against the insertion end; the other end is a rod with a smaller diameter and a hole, used to pass through the through holes of the two components, thus serving as a pivot between the two components. The through hole of the rod is located at the tail of the rod. After the rod passes through the two components, the through hole at its tail extends out of the two components and engages with a chuck or wire to lock it in the through holes of the two components, thus serving as a pivot between the two components.

[0052] Of course, the aforementioned pulley pin 91, first connecting rod pin 81 and second connecting rod pin 82 can also be fitted with bolts and nuts. The bolt has a threaded front end and a smooth rear end, which facilitates the rotation of the connecting rod 8 and the bearing pulley 9 around the smooth part of the bolt, and at the same time, it is locked by the threaded front end of the bolt and the nut.

[0053] Furthermore, such as Figure 2 As shown, the linkage arms of this utility model are provided in three pairs, which can form a stable triangular structure.

[0054] Furthermore, the spiral column 5 is inserted into the spray head 6 to change the flow direction of the material. The coating material is conveyed by the hollow rod 1 to the adapter rod 2, then filtered by the filter element 4, and then conveyed to the spray head 6. After being spirally conveyed by the spiral column 5 inside the spray head 6, the material is sprayed out from the outlet of the spray head 6. After being spirally conveyed by the spiral column 5, the material is sprayed outward in a spiral shape, thus being sprayed out radially through the outlet of the spray head 6. The radially diffused material is sprayed onto the inner wall of the pipe to achieve the spraying treatment of the inner wall of the pipe.

[0055] Furthermore, such as Figure 1 As shown, the left end of the nozzle 6 is open and extends inward to form an inner cavity that facilitates the insertion of the spiral column 5. The spiral column 5 is inserted into the inner cavity of the nozzle to change the flow direction of the coating material, so that the coating material changes from a straight flow to a spiral flow, thereby realizing the radial diffusion spraying of the material.

[0056] Furthermore, the right end of the spray head 6 is provided with a discharge port, which is connected to its inner cavity, thereby facilitating the spraying out of the coating material.

[0057] Furthermore, a boss is provided on the outer surface of the left end of the nozzle 6 to form an annular boss. The right end of the nozzle 6 extends out from the open nut 7, and the inner wall of the open nut 7 abuts against the annular boss on the left end of the nozzle, thereby restricting the nozzle 6 to be installed between the open nut 7 and the adapter rod 2.

[0058] Furthermore, the left end of the open nut 7 is provided with a threaded hole that mates with the threaded rod on the right end of the adapter rod 2, and the right end is provided with an opening that facilitates the extension of the nozzle 6.

[0059] Furthermore, such as Figure 1 As shown, the outer surface of the open nut 7 is regularly provided with cylindrical bosses or polyhedrons formed by cutting for easy tightening with a wrench.

[0060] like Figure 1 and Figure 2As shown, the portable pipe inner wall spraying device of this utility model has two bearing pulleys 9 at the outer end of each connecting rod. The two bearing pulleys 9 are regularly arranged on the front and rear sides of each connecting rod through pulley pins 91. Compared with a single pulley, the arrangement of two pulleys can greatly enhance the smoothness and stability of the entire device. At the same time, using bearing pulleys instead of ordinary pulleys can further improve the smoothness and stability of the device.

[0061] Furthermore, the bearing pulley 9 is a plastic-coated bearing pulley, and the outer side of its bearing is made of plastic tire. The plastic tire can avoid or reduce damage to the inner wall of the pipe, thereby avoiding scratches on the inner wall of the pipe.

[0062] like Figure 5 The diagram shown is an enlarged view of the adapter sleeve 3. The outer surface of the adapter sleeve 3 is regularly provided with a connecting rod adapter boss 301 that connects to the connecting rod 8. The connecting rod adapter boss 301 has a connecting rod slot in the middle to facilitate the insertion of the connecting rod. The connecting rod 8 is inserted and installed in the connecting rod slot, and the first connecting rod pin 81 passes through the connecting rod adapter boss 301 and the connecting rod 8, thereby installing and connecting the connecting rod 8 in the connecting rod adapter boss 301 and rotating around the first connecting rod pin 81.

[0063] Furthermore, the left end of the adapter sleeve 3 is regularly provided with outwardly protruding polygonal flange bosses 302, and several connecting rod adapter bosses 301 are arranged in a circular array on the outside of the polygonal flange bosses 302.

[0064] like Figure 2 and Figure 6 As described above, after driving the movable adapter sleeve 31 to the left, several pairs of connecting rod arms can be quickly retracted inward, thereby facilitating the carrying, transportation and storage of the portable pipe inner wall spraying device of this utility model.

[0065] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. 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. A portable pipe inner wall spraying device, characterized in that: It includes a hollow rod (1), a connecting rod (2), left and right connecting bushings (3), a filter element (4), a spiral column (5), a nozzle (6), an open nut (7), several connecting rods (8) and several bearing pulleys (9); The adapter rod (2) is installed and fixed at the right end of the hollow rod (1) for the transfer of components; The filter element (4) is installed in the internal flow channel of the adapter rod (2) for filtering the material. The spiral column (5) is installed in the inner cavity of the nozzle (6) to change the flow direction of the material; The open nut (7) is installed and fixed at the right end of the adapter rod (2), and the filter element (4) and the spray head (6) are restricted between the adapter rod (2) and the open nut (7). The front end of the spray head (6) is provided with a discharge port, which is connected to its inner cavity. The front end of the spray head (6) extends out from the open nut (7), and the material is sprayed out from the discharge port to spray the inner wall of the pipe. The material flows through the internal flow channels of the hollow rod (1) and the adapter rod (2) in sequence, is filtered by the filter element (4) in the adapter rod (2), flows into the inner cavity of the spray head (6), and is then conveyed by the spiral column (5) and sprayed out from the discharge port of the spray head (6). The left and right transition bushings (3) include a left transition bushing and a right transition bushing. The left transition bushing is fitted on the hollow rod (1), slides along the hollow rod (1), and is positioned and fixed by bolts to form a movable transition bushing (31). The right transition bushing is fitted on the transition rod (2) and is fixed on the transition rod (2) by bolts to form a fixed transition bushing (32). One end of the plurality of connecting rods (8) is rotatably connected to the left and right rotating bushings (3) through the first connecting rod pin (81); and rotates around the first connecting rod pin (81); the plurality of bearing pulleys (9) are installed at the other end of the plurality of connecting rods (8) through the pulley pin (91) and rotate around the pulley pin (91); The connecting rods (8) on the left and right pivot bushings (3) are matched one-to-one and intersected to form several pairs of intersecting connecting rod arms. The connecting rod arms are connected to each other through the second connecting rod pin (82). The intersecting connecting rod arms rotate around the second connecting rod pin (82) as the axis. The movable adapter sleeve (31) drives the several pairs of connecting arms to rotate in a cross manner.

2. The portable pipe inner wall spraying device according to claim 1, characterized in that: The hollow rod (1) is provided with a hollow rod flow channel that facilitates the flow of material on both sides, and its left and right ends are provided with threads to form a hollow rod threaded rod part that is easy to connect. One end of the adapter rod (2) is provided with a threaded hole that mates with the hollow rod, and the other end is provided with a threaded rod portion of the adapter rod. A flow channel for the material to flow through the adapter rod is provided on both sides. The adapter rod is screwed and fixed together with the threaded rod portion of the hollow rod through its threaded hole. The flow channel of the adapter rod and the flow channel of the hollow rod are interconnected. The flow channel of the adapter rod communicates with the inner cavity of the nozzle (6) through the filter element (4). The filter element (4) and the nozzle (6) are installed and fixed between the adapter rod (2) and the nozzle (7) through the open nut (7). The rear end of the nozzle (6) abuts against the filter element (4) to press and fix the filter element (4) in the flow channel of the adapter rod.

3. The portable pipe inner wall spraying device according to claim 1, characterized in that: The outer end of the connecting rod is equipped with a pair of bearing pulleys via the pulley pin (91). The pair of bearing pulleys are located on the front and rear sides of the connecting rod and rotate around the pulley pin (91) as an axis.

4. The portable pipe inner wall spraying device according to claim 1, characterized in that: The left end of the adapter rod (2) is provided with an outwardly protruding polygonal column boss, and the right end is the adapter rod part. The left side of the adapter rod part is designed with a smooth surface to form a smooth rod part, and the right side of the rod part is designed with a thread to form a threaded rod part. The fixed adapter sleeve (32) passes through the threaded part of the adapter rod and is fitted onto the smooth part of the adapter rod. The threaded part of the adapter rod is engaged with the threaded hole of the open nut (7) and tightened.

5. A portable pipe inner wall spraying device according to claim 1, characterized in that: The outer surface of the left and right adapter sleeves (3) is provided with a plurality of connecting rod adapter bosses (301) arranged in a circumferential array to connect with the connecting rod (8). The connecting rod adapter bosses (301) are regularly provided with connecting rod slots in the middle to facilitate the insertion of the connecting rod (8). The connecting rod (8) is inserted and installed in the connecting rod slots, and passes through the connecting rod adapter bosses (301) and the connecting rod (8) through the first connecting rod pin (81), thereby installing the connecting rod (8) on the connecting rod adapter bosses (301). The connecting rod (8) rotates around the first connecting rod pin between the connecting rod slots of the connecting rod adapter bosses (301).

6. A portable pipe inner wall spraying device according to claim 5, characterized in that: One end of the adapter sleeve (3) is regularly provided with an outwardly protruding polygonal flange boss (302), and the plurality of connecting rod adapter bosses (301) are arranged in a circumferential array on the outside of the polygonal flange boss (302).

7. A portable pipe inner wall spraying device according to any one of claims 1-6, characterized in that: The first connecting rod pin (81), the second connecting rod pin (82) and the pulley pin (91) are all flat-headed pins with holes, and are locked and fixed by cooperating with a chuck or lead wire.

8. A portable pipe inner wall spraying device according to claim 7, characterized in that: The first connecting rod pin (81), the second connecting rod pin (82), and the pulley pin (91) can be replaced with bolts and nuts for their engagement with the chuck or wire.

9. A portable pipe inner wall spraying device according to any one of claims 1-6, characterized in that: The left and right transition bushings are equipped with three pairs of connecting rod arms.

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