Baffle device for polishing welded junction of pipeline

Abstract

The utility model relates to the technical field of pipeline welded junction polishing, and discloses a baffle device for pipeline welded junction polishing, which comprises a main block and an auxiliary frame, and adjusting components are arranged on the main block and the auxiliary frame. According to the baffle device for pipeline welded junction polishing, in order to better block the interiors of pipelines with more pipe diameters and improve the applicability and convenience of a baffle device body, an adjusting assembly is arranged, a main block is matched, a sliding rod in a sliding sleeve is pushed and pulled, and a rectangular plate and a connecting rod are matched, so that a sliding block synchronously slides; a driving rod, a driven rod and a fixing column are matched to enable a plurality of groups of first fanning strips to be synchronously unfolded to open the tail end of the flexible bag, a secondary block is matched to rotate a threaded rod to enable a threaded block to axially move, a first hinge rod, a hinge block and a second hinge rod are matched to enable a plurality of groups of second fanning strips to be synchronously unfolded, and the flexible bag outside the second fanning strips can also be opened; and therefore, the baffle device can better adapt to pipelines with different pipe diameters, and the applicability and convenience of the baffle device body can be improved.

Description

Technical Field

[0001] This utility model relates to the field of pipe weld grinding technology, specifically a baffle for pipe weld grinding. Background Technology

[0002] During pipeline welding construction, weld grinding is a critical step. Grinding the weld joint generates a large amount of debris and foreign objects. If these debris and foreign objects enter the pipeline, they will cause many problems. On the one hand, the narrow space inside the pipeline makes it difficult to clean these debris and foreign objects, requiring a lot of manpower, material resources, and time. On the other hand, the residual debris and foreign objects may affect the transportation of the medium inside the pipeline. Therefore, an effective device is needed to block the debris and foreign objects generated during weld grinding and prevent them from entering the pipeline.

[0003] Currently, the blocking methods used in pipe weld grinding operations are relatively rudimentary and cannot achieve the desired blocking effect. For example, some construction workers may simply use ordinary plates for shielding, but this method is difficult to fit tightly against the pipe weld and is prone to gaps, allowing debris and foreign objects to still enter the pipe.

[0004] Most existing blocking devices cannot adapt well to pipes of different diameters. Different engineering projects use pipes of different diameters, and existing blocking devices are often only suitable for pipes of specific diameters. When the pipe diameter changes, it is necessary to replace the device with a different specification, which increases construction costs and operational complexity and affects work efficiency. If a suitable blocking device has to be purchased or manufactured every time the pipe diameter is changed, it will undoubtedly increase construction costs. In view of this, we propose a baffle for grinding pipe weld joints. Utility Model Content

[0005] The purpose of this utility model is to provide a baffle for grinding pipe weld joints, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A baffle for grinding pipe weld joints includes a main block and a slave frame, wherein an adjustment assembly is provided on the main block and the slave frame, the adjustment assembly comprising:

[0008] A sliding sleeve is fixedly installed inside the center of the main block. A sliding rod is slidably installed inside the sliding sleeve. A rectangular plate is fixedly installed at one end of the sliding rod. A connecting rod is fixedly connected to the outer wall of the rectangular plate. A slider is fixedly installed at the other end of the connecting rod. The center of the slider is slidably fitted to the outside of the sliding sleeve. An active rod is hinged to the slider.

[0009] The driven rod has one end hinged to the other end of the driving rod, and one end of the driven rod is hinged to the inside of the main block. A fixing column is fixedly installed on the outer wall of the other end of the driven rod. A first sector-shaped piece is fixedly installed on the outer wall of the fixing column. The arc-shaped outer wall of the first sector-shaped piece away from the main block is pasted to the inside of the end of the flexible bag. The sliding rod passes through the front end of the flexible bag. The flexible bag is made of flexible fireproof material, thereby avoiding fire and damage to the inner anti-corrosion layer of the pipeline body and protecting the inner anti-corrosion layer of the pipeline.

[0010] A threaded rod is rotatably mounted inside the center of the frame. A threaded block is threaded onto the threaded rod. One end of a first hinged rod is hinged onto the threaded block. The other end of the first hinged rod is hinged inside one end of the hinged block. A second hinged rod is fixedly mounted inside the other end of the hinged block. One end of the second hinged rod is hinged inside the frame. A second sector-shaped piece is fixedly mounted at the other end of the second hinged rod. The arc-shaped outer wall of the second sector-shaped piece is also adhered to the inside of the end of another set of flexible bags. The threaded rod passes through the front end of the flexible bag.

[0011] In a further embodiment, multiple sets of connecting rods are provided, making the slider move more stably.

[0012] In a further embodiment, multiple sets of the active rod, driven rod, fixed column, and first sector plate are provided, and the multiple sets of the active rod, driven rod, fixed column, and first sector plate are arranged in an equally spaced circular array with the center of the circular cross-section of the slide rod as the array center, thereby accommodating pipes of more diameters.

[0013] In a further embodiment, multiple sets of the first hinge rod, hinge block, second hinge rod, and second sector plate are provided, and the multiple sets of the first hinge rod, hinge block, second hinge rod, and second sector plate are all arranged in an equally spaced circumferential array with the center of the circular cross-section of the threaded rod as the array center, thereby accommodating pipes of more diameters.

[0014] In a further embodiment, auxiliary components are also provided on the main block and the slave frame. The auxiliary components include fixing rings. Fixing rings are fixedly installed on the outer walls of both the main block and the slave frame. The slide rod slides against the inner wall of a set of fixing rings, and the threaded rod rolls against the inner wall of a set of fixing rings. Screws are threaded into the arc-shaped side walls of both sets of fixing rings, so that the unfolded state of the baffle body is fixed, which can free the operator's hands.

[0015] In a further embodiment, a threaded post is fixedly installed at the end of the slide bar away from the rectangular plate, and a threaded post is also fixedly installed on the circular outer wall of the threaded rod. The two sets of threaded posts are respectively threaded into the inside of both ends of the double-ended threaded sleeve.

[0016] In a further embodiment, the first fan-shaped piece presses the ends of one set of flexible bags against the inside of a pipe with a relatively large diameter, while the second fan-shaped piece presses the ends of another set of flexible bags against the inside of a pipe with a relatively small diameter, making it more convenient to use.

[0017] Compared with the prior art, this utility model provides a baffle for grinding pipe weld joints, which has the following beneficial effects:

[0018] 1. This pipe weld grinding baffle, designed to better block pipes of various diameters and improve its applicability and convenience, incorporates an adjustment mechanism. When the main block is placed inside a relatively large pipe, the sliding rod inside the sliding sleeve, along with the rectangular plate and connecting rod, causes the slider to slide synchronously. This, combined with the active rod, driven rod, and fixed column, causes multiple sets of first sector-shaped plates to unfold synchronously, thus opening the end of the flexible bag. This allows for better adaptation to pipes of varying diameters with relatively large diameters. Conversely, when the secondary block is placed inside a relatively small pipe, rotating the threaded rod allows the threaded block to move axially. This, along with the first hinge rod, hinge block, and second hinge rod, causes multiple sets of second sector-shaped plates to unfold synchronously, also opening the external flexible bag. This allows for better adaptation to pipes of varying diameters with relatively small diameters, thereby improving the applicability and convenience of the baffle.

[0019] 2. This pipe weld grinding baffle is designed to enhance its practicality and ease of use. An auxiliary component is incorporated to secure the sliding rod or threaded rod by tightening the screw on the fixing ring, preventing them from sliding or rotating. This fixes the baffle in its unfolded state, freeing the operator's hands. Furthermore, rotating the two sets of threaded posts on the double-ended threaded sleeve allows for the removal of the entire structure at both ends, enabling better internal blocking of pipes with significantly different sizes. In summary, this design enhances the baffle's practicality and ease of use. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the larger pipe of this utility model;

[0022] Figure 3 This is a first-view schematic diagram of the structure of the adjustment component of this utility model;

[0023] Figure 4 This is a second-view schematic diagram of the structure of the adjustment component of this utility model;

[0024] Figure 5 This utility model Figure 4Enlarged structural diagram of region A in the middle;

[0025] Figure 6 This is a schematic diagram of the cross-section of the smaller pipe of this utility model;

[0026] Figure 7 This is a third-view schematic diagram of the adjustment component of this utility model;

[0027] Figure 8 This is a fourth-view schematic diagram of the structure of the adjustment component of this utility model;

[0028] Figure 9 This is an exploded cross-sectional view of part of the structure of this utility model.

[0029] Explanation of icon numbers:

[0030] 1. Master block; 2. Slave block;

[0031] 3. Adjustment assembly; 31. Slide rod; 32. Sliding sleeve; 33. Rectangular plate; 34. Connecting rod; 35. Slider; 36. Driving rod; 37. Driven rod; 38. Fixed column; 39. First sector plate; 310. Flexible bag; 311. Threaded rod; 312. Threaded block; 313. First hinge rod; 314. Hinge block; 315. Second hinge rod; 316. Second sector plate;

[0032] 4. Auxiliary components; 41. Retaining ring; 42. Screw; 43. Threaded post; 44. Double-ended threaded sleeve. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] In this application, the term "above" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is primarily used to better describe this application and its embodiments, and is not intended to limit the indicated device, element, or component to having a specific orientation, or to construct and operate in a specific orientation. Furthermore, the term "above" may also be used in certain circumstances to indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0035] Please see Figures 1-9 This utility model provides a technical solution:

[0036] A baffle for grinding pipe weld joints includes a main block 1 and a secondary frame 2.

[0037] In one embodiment of this utility model, an adjustment assembly 3 is provided on the main block 1 and the slave frame 2. The adjustment assembly 3 includes a sliding sleeve 32. The sliding sleeve 32 is fixedly installed inside the center of the main block 1. A sliding rod 31 is slidably installed inside the sliding sleeve 32. A rectangular plate 33 is fixedly installed at one end of the sliding rod 31. One end of a connecting rod 34 is fixedly connected to the outer wall of the rectangular plate 33. A slider 35 is fixedly installed at the other end of the connecting rod 34. The center of the slider 35 slides against the outside of the sliding sleeve 32. In addition, four sets of connecting rods 34 are provided to make the movement of the slider 35 more stable. One end of an active rod 36 is hingedly installed on the slider 35. The other end of the active rod 36 is hingedly installed on the driven rod. On the slide bar 37, one end of the driven rod 37 is hinged to the inside of the main block 1, and a fixing post 38 is fixedly installed on the outer wall of the other end of the driven rod 37. A first sector-shaped piece 39 is fixedly installed on the outer wall of the fixing post 38. In addition, there are four sets of driving rods 36, driven rods 37, fixing posts 38 and first sector-shaped pieces 39. The four sets of driving rods 36, driven rods 37, fixing posts 38 and first sector-shaped pieces 39 are all arranged in a circumferential array with equal spacing around the center of the circular cross-section of the slide bar 31, so as to accommodate pipes of more diameters. The arc-shaped outer wall of the first sector-shaped piece 39 away from the main block 1 is pasted to the inside of the end of the flexible bag 310 (using double-sided tape to avoid the need for unfolding). (The flexible bag 310 falls off), the sliding rod 31 passes through the front end of the flexible bag 310. The flexible bag 310 is made of flexible fireproof material, thus preventing it from catching fire (sparks will be generated during grinding and welding) and damaging the inner anti-corrosion layer of the pipe body, protecting the inner anti-corrosion layer of the pipe. Threaded rods 311 are rotatably installed at both ends from the center of the frame 2. Threaded blocks 312 are threadedly fitted on the threaded rods 311. One end of a first hinge rod 313 is hinged to the threaded block 312. The other end of the first hinge rod 313 is hinged to the inside of one end of a hinge block 314. A second hinge rod 315 is fixedly installed inside the other end of the hinge block 314. One end of the second hinge rod 315 is hinged to... Installed inside the frame 2, the other end of the second hinge rod 315 is fixedly installed with a second sector piece 316. In addition, there are three sets of the first hinge rod 313, hinge block 314, second hinge rod 315 and second sector piece 316. The three sets of the first hinge rod 313, hinge block 314, second hinge rod 315 and second sector piece 316 are all arranged in a circumferential array with the center of the circular cross section of the threaded rod 311 as the array center, so as to accommodate pipes with more diameters. The arc-shaped outer wall of the second sector piece 316 is also pasted to the inside of the end of another set of flexible bags 310 (using double-sided tape). The threaded rod 311 passes through the front end of the flexible bag 310.

[0038] In this embodiment, after the main block 1 is placed inside a large-diameter pipe, the operator can initiate the adaptation and sealing process for the large-diameter pipe by pushing and pulling the sliding rod 31 inside the sliding sleeve 32. One end of the sliding rod 31 is fixedly connected to the rectangular plate 33. When the sliding rod 31 is moved under force, the rectangular plate 33 will move synchronously. Four sets of connecting rods 34 are connected to the outer wall of the rectangular plate 33. The other end of each set of connecting rods 34 is fixedly installed on the slider 35, so that the movement of the rectangular plate 33 can drive the slider 35 to slide synchronously and in the same direction along the outside of the sliding sleeve 32 through the transmission of the connecting rods 34. When the sliding rod 31 is pulled towards the user, the slider 35 will slide towards the center of the main block 1. The active rod 36, which is hinged on the top, will expand synchronously around the hinge point under the drive of the slider 35. The expansion action of the active rod 36, through the hinged cooperation with the driven rod 37 and the hinged constraint between the driven rod 37 and the main block 1, will push the four sets of fixed columns 38 and the first sector plate 39 to complete the expansion action synchronously. The arc-shaped outer wall of the first sector plate 39 away from the main block 1 is pre-attached to the inside of the end of the flexible bag 310 with double-sided adhesive. As the first sector plate 39 expands, the end of the flexible bag 310 will be effectively stretched and tightly attached to the inner wall of the pipe, thereby achieving the sealing of the inside of different pipes with relatively large pipe diameters and effectively preventing debris and foreign objects generated during weld grinding from entering the inside of the pipe.

[0039] When it is necessary to seal a pipe with a relatively small diameter, the bracket 2 is inserted into the pipe. The operator manually rotates the threaded rod 311. The threaded rod 311 and the threaded block 312 are connected by threads. According to the principle of thread transmission, when the threaded rod 311 rotates, the threaded block 312 will move along the axial direction of the threaded rod 311. When the threaded block 312 moves away from the operator, the first hinge rod 313 hinged on the threaded block 312 will rotate about the hinge point. The second hinge rod 315, which is fixedly installed inside the other end of the hinge block 314, will also rotate along with the first hinge rod 312. The rotation of 3 produces corresponding actions. The three sets of first hinge rods 313, hinge blocks 314, second hinge rods 315, and second sector plates 316 will unfold synchronously under the drive of threaded blocks 312. The arc-shaped outer wall of the second sector plate 316 is also attached to the inside of the end of another set of flexible bags 310 with double-sided adhesive. As the second sector plate 316 unfolds, the end of the flexible bag 310 is stretched and attached to the inner wall of the small-diameter pipe, completing the sealing work of different small-diameter pipes, preventing debris and foreign objects from entering the pipe and becoming difficult to clean, thus improving work efficiency and ensuring the cleanliness of the inside of the pipe.

[0040] In one embodiment of this utility model, an auxiliary component 4 is also provided on the main block 1 and the slave frame 2. The auxiliary component 4 includes a fixing ring 41. The fixing ring 41 is fixedly installed on the outer wall of both the main block 1 and the slave frame 2. The slide rod 31 slides against the inner wall of a set of fixing rings 41, and the threaded rod 311 rolls against the inner wall of a set of fixing rings 41. Screws 42 are threaded into the arc-shaped side walls of both sets of fixing rings 41, so that the unfolded state of the baffle body is fixed, which can free the operator's hands. In addition, a threaded post 43 is fixedly installed on the end of the slide rod 31 away from the rectangular plate 33, and a threaded post 43 is also fixedly installed on the circular outer wall of the threaded rod 311. The two sets of threaded posts 43 are respectively threaded into the two ends of the double-ended threaded sleeve 44. In addition, the first fan-shaped plate 39 presses the end of a set of flexible bags 310 against the inside of a pipe with a relatively large diameter, and the second fan-shaped plate 316 presses the end of another set of flexible bags 310 against the inside of a pipe with a relatively small diameter, making it more convenient to use.

[0041] In this embodiment, both the main block 1 and the slave frame 2 are equipped with fixing rings 41 on their outer walls. The sliding rod 31 slides against the inner wall of one set of fixing rings 41, while the threaded rod 311 rolls against the inner wall of the other set of fixing rings 41. This contact method ensures the normal movement of the sliding rod 31 and the threaded rod 311, and also provides a basis for subsequent fixing operations. Both sets of fixing rings 41 have threaded holes inside their arc-shaped sidewalls that mate with screws 42. When the screws 42 on the fixing rings 41 are turned, they gradually screw in and move closer to the sliding rod 31 or the threaded rod 311. When the screws 42 are pressed tightly against the sliding rod 31 or the threaded rod 311, the screws 42 and the inner wall of the fixing rings 41 together engage the sliding rod 31 or the threaded rod 311. The threaded rod 311 creates a resisting force, restricting the sliding or rotation of the two components, thereby firmly fixing the unfolded state of the adjusting component 3. This ensures that the baffle remains stable during the pipe sealing process, eliminating the need for continuous external force application by the operator and effectively freeing up the operator's hands. Furthermore, when internal blocking is required for pipes with significantly different sizes, the operator can rotate the two sets of threaded posts 43 on the double-ended threaded sleeve 44 separately. Utilizing the engagement and disengagement characteristics of the threads, the structure connected at both ends of the double-ended threaded sleeve 44 can be removed as a whole, enabling flexible replacement and combination of different structures to better adapt to the sealing needs of pipes with different diameters. This significantly improves the practicality and ease of use of the baffle itself.

[0042] The specific connection methods of each part are all conventional methods such as riveting and welding that are mature in existing technology. The machinery, parts and equipment are all conventional models in existing technology, and will not be described in detail here.

[0043] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A baffle for grinding pipe weld joints, comprising a main block (1) and a secondary frame (2), characterized in that: The main block (1) and the slave frame (2) are provided with adjustment components (3), the adjustment components (3) including: The sliding sleeve (32) is fixedly installed inside the center of the main block (1). A sliding rod (31) is slidably installed inside the sliding sleeve (32). A rectangular plate (33) is fixedly installed at one end of the sliding rod (31). A connecting rod (34) is fixedly connected to the outer wall of the rectangular plate (33). A slider (35) is fixedly installed at the other end of the connecting rod (34). The slider (35) is slidably attached to the outside of the sliding sleeve (32) inside the center. An active rod (36) is hingedly installed on the slider (35). The driven rod (37) is hinged to the other end of the driving rod (36). One end of the driven rod (37) is hinged to the inside of the main block (1). A fixing column (38) is fixedly installed on the outer wall of the other end of the driven rod (37). A first sector-shaped piece (39) is fixedly installed on the outer wall of the fixing column (38). The arc-shaped outer wall of the first sector-shaped piece (39) away from the main block (1) is pasted to the inside of the end of the flexible bag (310). The sliding rod (31) passes through the front end of the flexible bag (310). The flexible bag (310) is made of flexible fireproof material. A threaded rod (311) is rotatably mounted at both ends inside the center of the frame (2). A threaded block (312) is threadedly fitted on the threaded rod (311). One end of a first hinge rod (313) is hingedly mounted on the threaded block (312). The other end of the first hinge rod (313) is hingedly mounted inside one end of a hinge block (314). A second hinge rod (315) is fixedly mounted inside the other end of the hinge block (314). One end of the second hinge rod (315) is hingedly mounted inside the frame (2). A second sector piece (316) is fixedly mounted on the other end of the second hinge rod (315). The arc-shaped outer wall of the second sector piece (316) is also pasted inside the end of another set of flexible bags (310). The threaded rod (311) passes through the front end of the flexible bag (310).

2. The baffle for grinding pipe weld joints according to claim 1, characterized in that: The connecting rod (34) is provided in multiple sets.

3. A baffle for grinding pipe weld joints according to claim 1, characterized in that: The active rod (36), driven rod (37), fixed column (38) and first sector plate (39) are provided in multiple sets, and the multiple sets of active rod (36), driven rod (37), fixed column (38) and first sector plate (39) are arranged in an equally spaced circular array with the center of the circular cross section of the slide rod (31) as the array center.

4. A baffle for grinding pipe weld joints according to claim 1, characterized in that: The first hinge rod (313), hinge block (314), second hinge rod (315) and second sector plate (316) are provided in multiple sets, and the multiple sets of the first hinge rod (313), hinge block (314), second hinge rod (315) and second sector plate (316) are all arranged in an equally spaced circular array with the center of the circular cross section of the threaded rod (311) as the array center.

5. A baffle for grinding pipe weld joints according to claim 1, characterized in that: The main block (1) and the slave frame (2) are also provided with auxiliary components (4). The auxiliary components (4) include fixing rings (41). Fixing rings (41) are fixedly installed on the outer walls of the main block (1) and the slave frame (2). The slide rod (31) slides against the inner wall of a set of fixing rings (41). The threaded rod (311) rolls against the inner wall of a set of fixing rings (41). Screws (42) are threaded into the arc-shaped side walls of both sets of fixing rings (41).

6. A baffle for grinding pipe weld joints according to claim 5, characterized in that: A threaded post (43) is fixedly installed at the end of the slide rod (31) away from the rectangular plate (33), and a threaded post (43) is also fixedly installed on the circular outer wall of the threaded rod (311). The two sets of threaded posts (43) are respectively threaded into the inside of the two ends of the double-ended threaded sleeve (44).

7. A baffle for grinding pipe weld joints according to claim 6, characterized in that: The first fan-shaped piece (39) presses the ends of a set of flexible bags (310) against the inside of a pipe with a relatively large diameter, and the second fan-shaped piece (316) presses the ends of another set of flexible bags (310) against the inside of a pipe with a relatively small diameter.

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