An assembled connecting joint for a plant ventilation duct

Abstract

This application relates to the field of pipe connections, and in particular to a prefabricated connection node for factory ventilation ducts, comprising: a first pipe with a first stirrup connected to its outer wall, and a first positioning member fixedly connected to one end of the first pipe; a second pipe with a second stirrup connected to its outer wall, and a second positioning member fixedly connected to one end of the second pipe, the outer wall of the first positioning member and the inner wall of the second positioning member being in contact; a clamping member encircling the first and second stirrups, one end of the clamping member being connected to a fixing member, an ear loop hole being provided at the end of the clamping member away from the fixing member, the fixing member being inserted into the ear loop hole, a limit member being fixedly connected at the end of the fixing member away from the clamping member, and a locking member being threadedly connected to the fixing member, the locking member being located between the clamping member and the limit member, and when the locking member is pressed against the clamping member, the clamping member is tightened to the first and second stirrups. This application has the effect of improving pipe assembly efficiency.

Description

Technical Field

[0001] This application relates to the field of pipe connections, and in particular to a prefabricated connection node for factory ventilation ducts. Background Technology

[0002] With the increasing demands on ventilation systems in modern industrial buildings, traditional ventilation duct connection methods are no longer sufficient to meet the requirements of rapid installation, efficient sealing, and long-term stability. Prefabricated connection nodes, as an innovative connection solution, are gradually gaining widespread application in factory ventilation systems.

[0003] In traditional factory ventilation duct connections, a clamp-type connection method is generally used. Specifically, ribs are rolled out at both ends of each duct section, and one end is narrowed to a smaller opening. During installation, the smaller opening end is inserted into the larger opening end according to the airflow direction. A steel clamp is then used to tightly connect the ribs at both ends. Bolts need to be threaded through the lugs, and then nuts are used to fix and tighten them. The installation is complicated, and the corresponding bolts and nuts need to be found during installation, which can easily lead to low assembly efficiency of ventilation ducts. Utility Model Content

[0004] To improve the efficiency of pipe assembly, this application provides a prefabricated connection node for factory ventilation ducts.

[0005] This application provides a prefabricated connection node for factory ventilation ducts, employing the following technical solution:

[0006] A prefabricated connection node for factory ventilation ducts, comprising:

[0007] The first pipe has a first stirrup connected to its outer wall, and a first positioning element is fixedly connected to one end of the first pipe.

[0008] The second pipe has a second stirrup connected to its outer wall, and a second positioning component is fixedly connected to one end of the second pipe. The outer wall of the first positioning component fits against the inner wall of the second positioning component.

[0009] The clamp is wrapped around the first and second stirrups. One end of the clamp is connected to a fixing member. The end of the clamp away from the fixing member has an ear loop hole into which the fixing member is inserted. The end of the fixing member away from the clamp is fixedly connected to a limiting member. The fixing member is threadedly connected to a locking member, which is located between the clamp and the limiting member. When the locking member is pressed against the clamp, the clamp is tightened around the first and second stirrups.

[0010] By adopting the above technical solution, when installing the first pipe and the second pipe, firstly, the locking component is screwed to the end of the fixing component to open the clamp and fit into the first pipe. Then, the first positioning component is inserted into the second positioning component to achieve coaxial positioning. Next, the first and second stirrups are respectively inserted into the limiting groove of the clamp to achieve axial positioning. Finally, the locking component is rotated to complete the installation. Traditional installation methods require finding bolts and nuts, which is time-consuming and prone to parts loss. However, this application sets the fixing component and locking component on the clamp, avoiding the problem of parts loss and reducing the time spent finding parts during installation, effectively improving installation efficiency.

[0011] Optionally, there is a gap between the outer wall of the fastener and the wall of the earring hole.

[0012] By adopting the above technical solution, there is a gap between the outer wall of the fastener and the wall of the earring hole, which facilitates the movement of the fastener in the earring hole, making the installation and disassembly of the first pipe and the second pipe more convenient, thereby improving the assembly efficiency of the ventilation duct connection node.

[0013] Optionally, the earring hole includes a guide portion and a directional portion. The guide portion is connected to the positioning portion. The guide portion is trumpet-shaped, and the end of the guide portion near the positioning portion is the end with a smaller trumpet-shaped opening. The guide portion is used to position the locking direction of the locking member.

[0014] By adopting the above technical solution, during installation, when the locking component approaches the earring hole, the flared guide part will guide the locking component to move towards the directional part, so that the locking component can enter the appropriate position more accurately and smoothly. There is no need for repeated manual adjustment of the direction, which reduces the installation difficulties or insecure installation caused by directional deviation, improves the installation efficiency of the connection node, and enhances the reliability of the connection.

[0015] Optionally, the locking component includes a locking part and a guide part, the locking part is connected to the guide part, the guide part is frustum-shaped, and the end of the guide part near the locking part is the end with a larger frustum-shaped cross section. The guide part is used to position the locking direction of the locking part.

[0016] By adopting the above technical solution, when the locking operation is performed, the frustum-shaped guide part can first contact and enter the corresponding mating structure. Due to its frustum shape, it can automatically adjust its position during the entry process, providing guidance and positioning for the subsequent installation of the locking part. This allows the locking part to be locked more accurately along the correct direction, reducing installation difficulties or incomplete installation caused by directional deviation, improving installation efficiency and accuracy, and thus enhancing the installation quality and stability of the entire prefabricated connection node.

[0017] Optionally, the cross-sectional area of ​​the locking part is larger than that of the guide part.

[0018] By adopting the above technical solution, during the installation process, since the cross-sectional area of ​​the guide part is smaller than that of the locking part, the guide part, which is truncated cone-shaped, enters the ear hole first to play a guiding role. This can more accurately guide the locking part to move in the correct direction to the appropriate position, reducing deviations in the locking direction. After the guide part is guided into place, the locking part with a larger cross-sectional area can provide greater clamping force, making the clamping parts more tightly clamp the first and second stirrups, enhancing the stability of the connection, and improving the reliability and stability of the node in long-term use.

[0019] Optionally, a sealing element is provided between the first pipe and the second pipe to seal the connection gap between the first pipe and the second pipe.

[0020] By adopting the above technical solution, when the first pipe and the second pipe are connected and assembled, the sealing element is placed between them, which effectively seals the connection and assembly gap between the first pipe and the second pipe, reduces the possibility of gas leakage from the ventilation duct through the gap, thereby enhancing the sealing reliability of the ventilation duct connection node and ensuring the normal and efficient operation of the plant ventilation system.

[0021] Optionally, the outer wall of the locking element is provided with ridges.

[0022] By adopting the above technical solution, when operators use tools such as wrenches to operate the locking parts, the ridge line can increase the friction between the tool and the locking parts, making it easier for the tool to apply force and reducing the possibility of the tool slipping on the surface of the locking parts. This makes it easier and faster to rotate the locking parts, allowing the clamping parts to tighten the first and second stirrups, thereby improving the installation efficiency of the entire connection node.

[0023] Optionally, the clamp has a first limiting groove and a second limiting groove. The first hoop is inserted into the first limiting groove, and the outer wall of the first hoop abuts against the groove wall of the first limiting groove. The second hoop is inserted into the second limiting groove, and the outer wall of the second hoop abuts against the groove wall of the second limiting groove.

[0024] By adopting the above technical solution, during installation, the first stirrup is inserted into the first limiting groove of the clamp, so that the outer wall of the first stirrup abuts against the groove wall of the first limiting groove, and the second stirrup is inserted into the second limiting groove of the clamp, so that the outer wall of the second stirrup abuts against the groove wall of the second limiting groove, thereby achieving axial positioning of the first and second pipes and improving the coaxiality of the pipe connection.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. When installing the first pipe and the second pipe, first screw the locking part to the end of the fixing part to open the clamp and put it into the first pipe. Then, insert the first positioning part into the second positioning part to achieve coaxial positioning. Next, insert the first and second stirrups into the limiting groove of the clamp to achieve axial positioning. Finally, rotate the locking part to complete the installation. The traditional installation method requires finding the bolts and nuts, which is time-consuming and prone to parts loss. However, this application sets the fixing part and the locking part on the clamp, avoiding the problem of parts loss and reducing the time spent finding parts during installation, effectively improving installation efficiency.

[0027] 2. There is a gap between the outer wall of the fastener and the wall of the earring hole, which facilitates the movement of the fastener in the earring hole, making the installation and disassembly of the first pipe and the second pipe more convenient, thereby improving the assembly efficiency of the ventilation duct connection node.

[0028] 3. During installation, when the locking component approaches the ear loop hole, the flared guide will guide the locking component to move towards the directional part, allowing the locking component to enter the appropriate position more accurately and smoothly. This eliminates the need for repeated manual adjustments to the direction, reducing installation difficulties or instability caused by directional deviations, improving the installation efficiency of the connection node, and enhancing the reliability of the connection. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure in the embodiments of this application.

[0030] Figure 2 This is a schematic diagram of the overall half-section in the embodiments of this application.

[0031] Figure 3 This is a schematic diagram of the position of the positioning rod in an embodiment of this application.

[0032] Figure 4 This is a schematic diagram of the locking component structure in an embodiment of this application.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. First pipe; 11. First stirrup; 12. First positioning component; 2. Second pipe; 21. Second stirrup; 22. Second positioning component; 3. Fixing component; 31. Limiting component; 4. Locking component; 5. Hoop ring; 51. First limiting groove; 52. Second limiting groove; 6. Fixing part; 61. Guide part; 62. Orienting part; 7. Sealing component; 8. Anti-rotation block; 81. Positioning rod; 9. Locking part; 91. Guide part. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0036] This application discloses a prefabricated connection node for factory ventilation ducts.

[0037] Reference Figure 1 and Figure 2 A prefabricated connection node for factory ventilation ducts includes a first pipe 1, a second pipe 2, and a clamp. A first stirrup 11 is fixedly connected to the outer wall of the first pipe 1, and a first positioning element 12 is fixedly connected to one end of the first pipe 1. A second stirrup 21 is fixedly connected to the outer wall of the second pipe 2, and a second positioning element 22 is fixedly connected to one end of the second pipe 2. The outer wall of the first positioning element 12 fits against the inner wall of the second positioning element 22. The clamp surrounds the first stirrup 11 and the second stirrup 21, and a fixing element 3 is fixedly connected to one end of the clamp. An earring hole is provided at the end away from the fixing member 3. The fixing member 3 is inserted into the earring hole. The end of the fixing member 3 away from the clamp is fixedly connected to the limiting member 31. The fixing member 3 is threadedly connected to the locking member 4. The locking member 4 is located between the clamp and the limiting member 31. When the locking member 4 is pressed against the clamp, the clamp is tightened to the first hoop 11 and the second hoop 21. In a preferred embodiment, the first hoop 11 and the second hoop 21 are both rings with a rectangular cross section. In a preferred embodiment, the first positioning member 12 and the second positioning member 22 are both rings with a rectangular cross section.

[0038] The clamping component includes two clamps that fit together to form a circular groove. Specifically, each clamp includes a ring portion 5 and a fixing portion 6. The ring portion 5 is semi-circular, and its outer wall is fixedly connected to one end of the fixing portion 6. The fixing portions 6 are symmetrically distributed at both ends of the ring portion 5. In the same clamp, one side of one fixing portion 6 is fixedly connected to a fixing member 3, and the ear loop hole is opened in the other fixing portion 6. When the first pipe 1 and the second pipe 2 are clamped together, the two clamps abut against each other, and the ring portions 5 of the two clamps abut against each other. At the same time, the fixing portions 6 of the two clamps abut against each other, and the abutting plane passes through the center of the circular groove.

[0039] The hoop portion 5 has a first limiting groove 51 and a second limiting groove 52. The circular groove is connected to the first limiting groove 51 and the second limiting groove 52. The first hoop 11 is inserted into the first limiting groove 51, and the outer wall of the first hoop 11 abuts against the groove wall of the first limiting groove 51. The second hoop 21 is inserted into the second limiting groove 52, and the outer wall of the second hoop 21 abuts against the groove wall of the second limiting groove 52.

[0040] Furthermore, to improve installation convenience, the first limiting groove 51 and the second limiting groove 52 are connected and have a cross-section in the shape of a c. When the hoop 5 is hooped on the first hoop 11 and the second hoop 21, one side of the first hoop 11 abuts against one side of the second hoop 21, the side of the first hoop 11 away from the second hoop 21 abuts against the groove wall of the first limiting groove 51, and the side of the second hoop 21 away from the first hoop 11 abuts against the groove wall of the second limiting groove 52. Furthermore, the outer wall of the first hoop 11 abuts against the groove wall of the first limiting groove 51, and the outer wall of the second hoop 21 abuts against the groove wall of the second limiting groove 52.

[0041] A sealing element 7 is provided between the first pipe 1 and the second pipe 2. The sealing element 7 is used to seal the connection gap between the first pipe 1 and the second pipe 2. Two sealing elements 7 are provided. One is fixedly connected to the end of the first positioning member 12 away from the first pipe 1, and the other sealing element 7 is fixedly connected to the end of the second positioning member 22 away from the second pipe 2. When the first pipe 1 and the second pipe 2 are assembled and fixed, the sealing element 7 connected to the first positioning member 12 is pressed against the end of the second pipe 2 near the second positioning member 22, so that the sealing element 7 connected to the first positioning member 12 is tightly clamped between the first positioning member 12 and the second pipe 2. The sealing element 7 connected to the second positioning member 22 is pressed against the end of the first pipe 1 near the first positioning member 12, so that the sealing element 7 connected to the second positioning member 22 is tightly clamped between the second positioning member 22 and the first pipe 1. Thus, the two sealing elements 7 are tightly clamped between the first pipe 1 and the second pipe 2, improving the sealing performance of the pipe connection. In a preferred embodiment, the sealing element 7 is a rubber ring.

[0042] When connecting the first pipe 1 and the second pipe 2, the first positioning member 12 is inserted into the annular interior of the second positioning member 22, so that the outer wall of the first positioning member 12 is in contact with the inner wall of the second positioning member 22. The first positioning member 12 continues to move and slides along the inner wall of the second positioning member 22 until the two sealing members 7 respectively abut against the first pipe 1 and the second pipe 2. The first limiting groove 51 is aligned with the first hoop 11, and the second limiting groove 52 is aligned with the second hoop 21. The two hoop rings 5 ​​are moved closer to the first hoop 11, so that the first hoop 11 is inserted into the first limiting groove 51, and the second hoop 21 is inserted into the second limiting groove 52. The groove wall of the circular groove is in close contact with the outer wall of the first pipe 1 and the second pipe 2. The fixing parts 6 of the two hoops abut against each other, and the fixing member 3 is inserted into the ear hole of the abutting hoop, thereby realizing the hooping operation of the first pipe 1 and the second pipe 2.

[0043] Reference Figure 2 and Figure 3To reduce the possibility of rotation after the first pipe 1 and the second pipe 2 are assembled, an anti-rotation block 8 is fixedly connected to the second stirrup 21. The first stirrup 11 has an anti-rotation groove that matches the anti-rotation block 8. When the first pipe 1 and the second pipe 2 are installed, the anti-rotation block 8 is inserted into the anti-rotation groove, and the outer wall of the anti-rotation block 8 is in contact with the groove wall of the anti-rotation groove. The groove wall of the anti-rotation groove positions the anti-rotation block 8, thereby reducing the possibility of mutual rotation between the first pipe 1 and the second pipe 2. A positioning rod 81 is fixedly connected to the groove wall of the first limiting groove 51. The length direction of the positioning rod 81 passes through the center of the hoop 5, and the two fixing parts 6 connected by the hoop are symmetrical about the axis of symmetry. In a consistent manner, the first pipe 1 has a first through hole, the first stirrup 11 has a second through hole, and the anti-rotation block 8 has a third through hole. The first through hole, the second through hole, and the third through hole are connected in sequence. The positioning rod 81 is inserted into the first through hole, the second through hole, and the third through hole in sequence, and the outer wall of the positioning rod 81 is in contact with the hole wall of the first through hole, the hole wall of the second through hole, and the hole wall of the third through hole. This allows the first through hole, the second through hole, and the third through hole to position the positioning rod 81, reducing the possibility of loosening that may occur due to relative rotation between the stirrup and the first pipe 1 and the second pipe 2, and improving safety.

[0044] To improve the ease of movement of the hoop 5, there is a gap between the outer wall of the fastener 3 and the wall of the earring hole, which reduces the difficulty of moving the hoop 5 and thus improves the installation efficiency.

[0045] Reference Figure 4 The earring hole includes a guide portion 61 and a directional portion 62. The guide portion 61 is connected to the positioning portion. The guide portion 61 is trumpet-shaped, and the end of the guide portion 61 near the positioning portion is the end with a smaller trumpet-shaped opening. The guide portion 61 is used to position the locking direction of the locking member 4.

[0046] The locking member 4 includes a locking part 9 and a guide part 91. The locking part 9 and the guide part 91 are fixedly connected. The locking part 9 is located between the guide part 91 and the limiting member 31. In this embodiment, the limiting member 31 is cylindrical and protrudes from the outer wall of the fixing member 3 to limit the movement of the locking part 9 and reduce the possibility of the locking part 9 disengaging from the fixing member 3. The guide part 91 is frustum-shaped, and the end of the guide part 91 near the locking part 9 is the end with a larger cross-section of the frustum shape. The guide part 91 is used to position the locking direction of the locking part 9. Furthermore, the cross-sectional area of ​​the locking part 9 is larger than that of the guide part 91. The locking part 9 is threadedly connected to the fixing member 3.

[0047] When the locking part 9 moves toward the fixing part 6, the guide part 91 is attached to the guide part 61, and the guide part 61 guides the guide part 91 until the side of the locking part 9 close to the guide part 91 is pressed against the fixing part 6. At the same time, the outer peripheral wall of the guide part 91 matches and fits with the peripheral wall of the hole of the guide part 61, thereby achieving the fixing operation of the two clamps through the fixing member 3 and the locking part 9.

[0048] To facilitate the tightening of the locking part 9, the outer wall of the locking part 9 is provided with ridges. In a preferred embodiment, the locking part 9 is hexagonal prism-shaped.

[0049] The implementation principle of a prefabricated connection node for factory ventilation ducts in this application embodiment is as follows: When connecting the first pipe 1 and the second pipe 2, the locking part 9 is turned to the end of the fixing part 3 near the limiting part 31, which will make the two hoop members move away from each other. At this time, the two hoop members are at their farthest distance. The first pipe 1 is inserted into the side of the two hoop ring parts 5 that are close to each other. The positions of the first pipe 1 and the second pipe 2 are adjusted so that the anti-rotation block 8 is aligned with the anti-rotation groove. The anti-rotation member is inserted into the anti-rotation groove, and the first positioning member 12 is inserted into the annular interior of the second positioning member 22, so that the outer wall of the first positioning member 12 is in contact with the inner wall of the second positioning member 22. The first positioning member 12 continues to move and slides along the inner wall of the second positioning member 22 until the two sealing members 7 respectively abut against the first pipe 1 and the second positioning member 2. For the second pipe 2, insert the positioning rod 81 into the third through hole to position the hoop, so that the first limiting groove 51 is aligned with the first hoop 11 and the second limiting groove 52 is aligned with the second hoop 21. Move the two hoop rings 5 ​​toward the first hoop 11, insert the first hoop 11 into the first limiting groove 51, and insert the second hoop 21 into the second limiting groove 52. Tighten the locking part 9, and move the locking part 9 toward the fixing part 6. The guide part 61 guides the movement direction of the guide part 91 until the locking part 9 is tightly against the fixing part 6. The two fixing parts 6, which are associated with the earring hole through the fastener 3, are tightly against each other, so that the groove wall of the circular groove is tightly against the outer wall of the first pipe 1 and the second pipe 2, thereby realizing the assembly connection of the first pipe 1 and the second pipe 2.

[0050] The above are all preferred embodiments of this application. These embodiments are only explanations of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A prefabricated connection node for factory ventilation ducts, characterized in that, include: The first pipe (1) has a first stirrup (11) connected to its outer wall, and a first positioning element (12) is fixedly connected to one end of the first pipe (1). The second pipe (2) has a second stirrup (21) connected to its outer wall. A second positioning member (22) is fixedly connected to one end of the second pipe (2). The outer wall of the first positioning member (12) is in contact with the inner wall of the second positioning member (22). The clamp is wrapped around the first stirrup (11) and the second stirrup (21). One end of the clamp is connected to a fixing member (3). The end of the clamp away from the fixing member (3) has an ear loop hole. The fixing member (3) is inserted into the ear loop hole. The end of the fixing member (3) away from the clamp is fixedly connected to a limiting member (31). The fixing member (3) is threadedly connected to a locking member (4). The locking member (4) is located between the clamp and the limiting member (31). When the locking member (4) is pressed against the clamp, the clamp is tightened to the first stirrup (11) and the second stirrup (21).

2. The prefabricated connection node for factory ventilation ducts according to claim 1, characterized in that, There is a gap between the outer wall of the fastener (3) and the wall of the earring hole.

3. The prefabricated connection node for factory ventilation ducts according to claim 1, characterized in that, The earring hole includes a guide part (61) and a directional part (62). The guide part (61) is connected to the positioning part. The guide part (61) is trumpet-shaped, and the end of the guide part (61) near the positioning part is the end with a smaller trumpet-shaped opening. The guide part (61) is used to position the locking direction of the locking member (4).

4. The prefabricated connection node for factory ventilation ducts according to claim 1, characterized in that, The locking part (4) includes a locking part (9) and a guide part (91). The locking part (9) is connected to the guide part (91). The guide part (91) is frustum-shaped. The end of the guide part (91) near the locking part (9) is the end with a larger frustum-shaped cross section. The guide part (91) is used to position the locking direction of the locking part (9).

5. A prefabricated connection node for factory ventilation ducts according to claim 4, characterized in that, The cross-sectional area of ​​the locking part (9) is larger than that of the guide part (91).

6. A prefabricated connection node for factory ventilation ducts according to claim 1, characterized in that, A sealing element (7) is provided between the first pipe (1) and the second pipe (2), and the sealing element (7) is used to seal the connection and assembly gap between the first pipe (1) and the second pipe (2).

7. A prefabricated connection node for factory ventilation ducts according to claim 1, characterized in that, The outer wall of the locking element (4) is provided with ridges.

8. A prefabricated connection node for factory ventilation ducts according to claim 1, characterized in that, The clamp has a first limiting groove (51) and a second limiting groove (52). The first hoop (11) is inserted into the first limiting groove (51), and the outer wall of the first hoop (11) abuts against the groove wall of the first limiting groove (51). The second hoop (21) is inserted into the second limiting groove (52), and the outer wall of the second hoop (21) abuts against the groove wall of the second limiting groove (52).

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