Water return pipe connecting structure of corrugated roller and corrugated roller

Abstract

The invention is suitable for the technical field of corrugated paper production equipment, and discloses a corrugated roller water return pipe connecting structure which comprises a water return pipe. The device further comprises a first flange, a clamping block and a second flange. The first flange is fixed to an air inlet end shaft head of the corrugated roller. The multiple clamping blocks are fixedly arranged on the outer pipe wall of the water return pipe in the circumferential direction of the water return pipe, and the sides, back on to the water return pipe, of the clamping blocks are connected with the hole wall of the center hole of the first flange in a clamped mode. The second flange is inserted into the center hole of the first flange and abuts against the clamping block, and the second flange is fixedly connected with the first flange. The first flange is fixedly connected with the shaft head at the air inlet end of the corrugated roller, and the second flange fixedly connected with the first flange abuts against the clamping block, so that when the clamping block on the outer wall of the water return pipe is always clamped with the hole wall of the central hole of the first flange, the water return pipe is ensured not to be loosened outwards from the shaft head at the air inlet end of the corrugated roller; therefore, the problem that the water return pipe is easy to loosen when being in threaded connection with the shaft head at the air inlet end of the corrugated roller is solved.

Description

Technical Field

[0001] The invention relates to the technical field of corrugated paper production equipment, in particular to a water return pipe connection structure of a corrugated roller and the corrugated roller. Background Art

[0002] The corrugated roller is a very important component in a single-sided corrugated machine. The corrugated base paper is heated by an upper and lower pair of corrugated rollers, rolled into a wavy corrugated paper, and then coated with glue to form a single-sided corrugated board. The Chinese patent document with announcement number CN202139504U discloses a corrugated roller, including a main body with a chamber arranged inside, a left half-shaft and a right half-shaft respectively arranged at both ends of the main body, a steam pipe and a condensate pipe arranged in the right half-shaft, etc. Among them, the condensate pipe (i.e., the return pipe) is connected to the chamber. However, the condensate pipe is usually connected to the shaft end of the corrugated roller body in a threaded connection. During the long-term use of the corrugated roller, due to factors such as vibration and friction, the thread may gradually wear, resulting in a decrease in the tightness of the connection. When worn to a certain extent, the condensate pipe will loosen due to inability to withstand sufficient tightening force.

[0003] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the invention

[0004] The present invention provides a return pipe connection structure of a corrugated roller and a corrugated roller, aiming to solve the problem that the existing corrugated roller condensate pipe (return pipe) will be loosened from the axial end of the corrugated roller body after long-term use.

[0005] To achieve the above object, the solution provided by the present invention is:

[0006] A water return pipe connection structure for a corrugated roller, comprising a water return pipe; and further comprising:

[0007] A first flange, wherein the first flange is fixed to the air inlet end shaft head of the corrugated roller;

[0008] A clamping block, wherein the clamping blocks are provided in plurality and fixedly arranged on the outer pipe wall of the return pipe along the circumference of the return pipe, and the side of the clamping block facing away from the return pipe is clamped with the wall of the central hole of the first flange;

[0009] The second flange is inserted into the central hole of the first flange and pressed against the clamping block, and the second flange is fixedly connected to the first flange.

[0010] Optionally, an annular limiting plate is provided on the wall of the central hole of the first flange, and the clamping block is clamped between the annular limiting plate and the second flange.

[0011] Optionally, the second flange has an annular insert plate inserted into the center hole of the first flange, the insertion end of the annular insert plate is provided with a limiting slot, and the clamping block is clamped in the limiting slot.

[0012] Optionally, the return pipe connection structure of the corrugated roller also includes a steam tube core; the steam tube core is located inside the air inlet end shaft head of the corrugated roller, and one end of the steam tube core is closed, and the other end is fixedly mounted on the return pipe; a first steam channel is formed between the outer wall of the steam tube core and the inner wall of the air inlet end shaft head of the corrugated roller.

[0013] Optionally, a sealing ring is provided between the inner wall of the steam pipe core and the outer wall of the return water pipe.

[0014] Optionally, a plurality of water return holes are provided on the steam tube core; the water return holes are arranged along the circumference of the steam tube core, and the water return holes are connected to the steam tube core.

[0015] The present invention also provides a corrugated roller, comprising a corrugated roller body, an air inlet end shaft head and an air closing end shaft head arranged on both sides of the corrugated roller body, and the aforementioned water return pipe connection structure of the corrugated roller.

[0016] Optionally, the air inlet end shaft head is provided with a first inner cavity, a second inner cavity and a third inner cavity which are interconnected; the end of the steam pipe core not connected to the return pipe is used to block the third inner cavity; the first steam channel is connected to the second inner cavity; and the air inlet end shaft head is provided with a second steam channel which is connected to the second inner cavity.

[0017] Optionally, a jacket is formed between the inner wall and the outer wall of the corrugated roller body, and a condensate return channel connected to the jacket is provided on the air inlet end shaft head, and the condensate return channel is connected to the water return hole.

[0018] The beneficial effects of the present invention are as follows: the present invention provides a return pipe connection structure for a corrugated roller, by fixing a first flange with the air inlet end shaft head of the corrugated roller, and pressing a second flange fixedly connected to the first flange against a clamping block, while keeping the clamping block on the outer wall of the return pipe always in a clamped state with the central hole wall of the first flange, it also ensures that the return pipe cannot loosen outward from the air inlet end shaft head of the corrugated roller, thereby solving the problem of easy loosening when the return pipe (condensate pipe) is threadedly connected to the air inlet end shaft head of the corrugated roller.

[0019] The present invention also provides a corrugated roller, including the aforementioned return pipe connection structure for installation on the air inlet end shaft head of the corrugated roller. By using the aforementioned return pipe connection structure, it is ensured that the return pipe cannot loosen outward from the air inlet end shaft head of the corrugated roller, so that the safety hazard of the corrugated roller when in use is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The cross section of the corrugated roller provided by the present invention is Figure 1 .

[0021] Figure 2 yes Figure 1Enlarged view of part A.

[0022] Figure 3 It is a cross-sectional view of the intake end shaft head.

[0023] Figure 4 yes Figure 3 Enlarged view of part B.

[0024] Figure 5 The cross section of the corrugated roller provided by the present invention is Figure 2 .

[0025] Figure 6 yes Figure 5 Magnified view of part C.

[0026] Description of Figure Numbers:

[0027] 1-Return pipe;

[0028] 2-first flange; 21-annular limiting plate;

[0029] 3-corrugated roller; 31-corrugated roller body; 311-jacket; 32-inlet end shaft head; 321a-first inner cavity; 321b-second inner cavity; 321c-third inner cavity; 322-condensate return channel; 33-closed end shaft head;

[0030] 4-second flange; 41-annular plug plate; 411-limiting slot;

[0031] 5-steam pipe core; 501-water return hole;

[0032] 6-sealing ring; 7-first steam channel; 8-second steam channel; 9-block; 10-gasket. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0036] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] See also Figures 1 to 6 The present invention provides a return pipe connection structure of a corrugated roller, which can be installed on a corrugated roller 3 or on other rollers heated by steam. Specifically, the connection structure includes a return pipe 1, a first flange 2, a block 9 and a second flange 4.

[0038] The return pipe 1 is used to recover condensed water so that the condensed water is discharged to the outside of the corrugated roller 3; one end of the return pipe 1 is installed with the air inlet end shaft head 32 of the corrugated roller 3, and the other end can be connected to the rotary joint. The first flange 2 can be fixedly installed on the air inlet end shaft head 32 of the corrugated roller 3 by bolts. The clamping block 9 is provided in multiple numbers and is fixedly arranged on the outer tube wall of the return pipe 1 along the circumference of the return pipe 1 (can be welded), and the side of the clamping block 9 facing away from the return pipe 1 is clamped with the center hole wall of the first flange 2. The second flange 4 can be connected and fixed to the first flange 2 by bolts, and the second flange 4 is inserted into the center hole of the first flange 2 and pressed against the clamping block 9.

[0039] By fixing the first flange 2 with the air inlet end shaft head 32 of the corrugating roller 3 and pressing the second flange 4 fixedly connected with the first flange 2 against the clamping block 9, the clamping block 9 on the outer wall of the return pipe 1 is always kept in a clamped state with the central hole wall of the first flange 2, and it is also ensured that the return pipe 1 cannot loosen outward from the air inlet end shaft head 32 of the corrugating roller 3, thereby solving the problem of easy loosening when the return pipe 1 (condensate pipe) is threadedly connected with the air inlet end shaft head 32 of the corrugating roller 3.

[0040] like Figure 3 and Figure 4As shown, optionally, the center hole wall of the first flange 2 is provided with an annular stopper plate 21, so that a slot is formed among the annular stopper plate 21, the second flange 4, and the center hole wall of the first flange 2. When the clamping block 9 is clamped in the clamping slot, the clamping block 9 cannot move in the radial direction of the return pipe 1, and it cannot move in the length direction of the return pipe 1, thereby ensuring that the clamping block 9 and the center hole wall of the first flange 2 are always kept in a clamped state, so that the return pipe 1 and the air inlet end shaft head 32 of the corrugated roller 3 are firmly connected by the setting of the clamping block 9.

[0041] It can be understood that the side of the block 9 facing away from the return pipe 1 (i.e., the side facing the center hole wall of the first flange 2) has an arcuate surface, thereby allowing the block 9 to simultaneously maintain a clamping relationship with the annular limit plate 21, the second flange 4, and the center hole wall of the first flange 2.

[0042] like Figure 3 and Figure 4 As shown, optionally, the second flange 4 has an annular plug plate 41 inserted into the center hole of the first flange 2, and the insertion end of the annular plug plate 41 is provided with a limit slot 411, and the clamping block 9 is clamped with the limit slot 411. The setting of the limit slot 411 further restricts the movement of the clamping block 9, so that the clamping block 9 cannot rotate relative to the first flange 2 and the second flange 4, and the first flange 2 and the second flange 4 are fixedly mounted on the air inlet end shaft head 32 of the corrugated roller 3 at the same time. Therefore, when the second flange 4 is not disassembled, the clamping block 9 cannot move, thereby ensuring that the return pipe 1 will not be loosened.

[0043] like Figure 1 , Figure 2 , Figure 5 as well as Figure 6 As shown, optionally, the return pipe 1 connection structure of the corrugating roller 3 also includes a steam tube core 5; the steam tube core 5 is located in the air inlet end shaft head 32 of the corrugating roller 3, and one end of the steam tube core 5 is closed, and the other end is fixedly sleeved on the return pipe 1; a first steam channel 7 is formed between the outer wall of the steam tube core 5 and the inner wall of the air inlet end shaft head 32 of the corrugating roller 3, so that steam can be transported to the corrugating roller 3 through the first steam channel 7 during production; and one end of the steam tube core 5 is closed, and when the steam tube core 5 is sleeved on the return pipe 1, the steam in the corrugating roller 3 cannot flow back into the return pipe 1, thereby reducing the waste of steam.

[0044] like Figure 5 and Figure 6As shown, optionally, a sealing ring 6 is sleeved between the inner wall of the steam pipe core 5 and the outer wall of the return pipe 1. A plurality of sealing rings 6 may be provided; and in order to install the sealing ring 6, a plurality of annular grooves may be provided on the outer wall of the return pipe 1 to accommodate the sealing ring 6. The provision of the sealing ring 6 ensures that when steam is transported from the outside to the first steam channel 7, the steam will not enter the steam pipe core 5 and the return pipe 1 from the connection between the steam pipe core 5 and the return pipe 1.

[0045] like Figure 3 , Figure 5 and Figure 6 As shown, optionally, a plurality of water return holes 501 are provided on the steam tube core 5; the water return holes 501 are arranged along the circumference of the steam tube core 5, and the water return holes 501 are connected to the steam tube core 5, and the water return holes 501 can be connected to the condensate return channel 322 arranged in the air inlet end shaft head 32 of the corrugated roller 3, so that the condensate generated after the corrugated roller 3 is cooled can enter the steam tube core 5 and the water return pipe 1 through the air inlet end shaft head 32 of the corrugated roller 3, and can be discharged from the water return pipe 1 to the outside.

[0046] like Figures 1 to 6 As shown, the present invention further provides a corrugating roller 3, comprising a corrugating roller body 31, an air inlet end shaft head 32 and an air closing end shaft head 33 arranged on both sides of the corrugating roller body 31, and the aforementioned water return pipe connection structure of the corrugating roller. By using the aforementioned water return pipe connection structure, it is ensured that the water return pipe 1 cannot be loosened outward from the air inlet end shaft head 32 of the corrugating roller 3, thereby solving the problem of easy loosening when the water return pipe 1 (condensate pipe) is threadedly connected to the air inlet end shaft head 32 of the corrugating roller 3.

[0047] like Figure 3 , Figure 5 and Figure 6 As shown, optionally, the air inlet end shaft head 32 is provided with a first inner cavity 321a, a second inner cavity 321b and a third inner cavity 321c which are interconnected. The water return pipe 1 and the steam pipe core 5 are both located in the first inner cavity 321a, and the end of the steam pipe core 5 which is not connected to the water return pipe 1 is used to block the third inner cavity 321c. The first steam channel 7 is connected to the second inner cavity 321b, and the air inlet end shaft head 32 is provided with a plurality of second steam channels 8 which are connected to the second inner cavity 321b, thereby allowing steam to enter the interior of the corrugated roller body 31 through the first steam channel 7, the second inner cavity 321b and the second steam channel 8 in sequence, without opening a steam channel on the steam pipe core 5 to communicate with the interior of the corrugated roller body 31, thereby ensuring that the steam inside the corrugated roller body 31 will not flow back to the interior of the water return pipe 1 and the steam pipe core 5.

[0048] like Figure 5As shown, optionally, a jacket 311 is formed between the inner wall and the outer wall of the corrugating roller body 31, and a steam inlet can be set on the inner wall of the corrugating roller body 31, and the steam inlet can be connected to the jacket 311. When the steam enters the interior of the corrugating roller body 31, the steam can enter the jacket 311 through the steam inlet, so that the high-temperature steam can be used to heat the roller surface of the corrugating roller 3.

[0049] like Figure 3 , Figure 5 as well as Figure 6 As shown, optionally, a condensate return channel 322 communicating with the jacket 311 is provided on the air inlet end shaft head 32, and the condensate return channel 322 is communicated with the water return hole 501, and the number of the condensate return channels 322 is consistent with the number of the water return holes 501. By providing the condensate return channel 322, after the corrugated roller body 31 is cooled, the condensate in the jacket 311 can be transported to the water return hole 501 through the condensate return channel 322, and the water return hole 501 is communicated with the interior of the steam pipe core 5, so that the condensate can be discharged to the outside through the steam pipe core 5 and the water return pipe 1.

[0050] It can be understood that the clamping area between the clamping block 9 and the center hole wall of the first flange 2 can also play a positioning role, so that after the corrugating roller 3 is assembled, the return water hole 501 can be connected to the condensate return channel 322, thereby ensuring that the condensate in the jacket 311 can be transported to the outside of the corrugated roller 3.

[0051] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A water return pipe connection structure for a corrugated roller, comprising a water return pipe (1); characterized in that: Also includes: A first flange (2), wherein the first flange (2) is fixed to an air inlet end shaft head (32) of a corrugating roller (3); A clamping block (9), wherein a plurality of the clamping blocks (9) are provided and are fixedly arranged on the outer wall of the return pipe (1) along the circumference of the return pipe (1), and a side of the clamping block (9) facing away from the return pipe (1) is clamped with the wall of the central hole of the first flange (2); The second flange (4) is inserted into the central hole of the first flange (2) and pressed against the clamping block (9), and the second flange (4) is fixedly connected to the first flange (2).

2. The water return pipe connection structure of the corrugated roller according to claim 1, characterized in that: An annular limiting plate (21) is provided on the wall of the central hole of the first flange (2), and the clamping block (9) is clamped between the annular limiting plate (21) and the second flange (4).

3. The water return pipe connection structure of the corrugated roller according to claim 1, characterized in that: The second flange (4) has an annular insert plate (41) inserted into the central hole of the first flange (2), the insertion end of the annular insert plate (41) is provided with a limiting slot (411), and the clamping block (9) is clamped with the limiting slot (411).

4. The water return pipe connection structure of the corrugated roller according to claim 1, characterized in that: It also comprises a steam pipe core (5); the steam pipe core (5) is located in the air inlet end shaft head (32) of the corrugating roller (3), one end of the steam pipe core (5) is closed, and the other end is fixedly sleeved on the return pipe (1); a first steam channel (7) is formed between the outer wall of the steam pipe core (5) and the inner wall of the air inlet end shaft head (32) of the corrugating roller (3).

5. The water return pipe connection structure of the corrugated roller according to claim 4, characterized in that: A sealing ring (6) is sleeved between the inner wall of the steam pipe core (5) and the outer wall of the water return pipe (1).

6. The water return pipe connection structure of the corrugated roller according to claim 4, characterized in that: The steam pipe core (5) is provided with a plurality of water return holes (501); the water return holes (501) are arranged along the circumference of the steam pipe core (5), and the water return holes (501) are connected to the interior of the steam pipe core (5).

7. A corrugated roller, characterized in that: The invention comprises a corrugating roller body (31), an air inlet end shaft head (32) and an air closing end shaft head (33) arranged on both sides of the corrugating roller body (31), and a return pipe connection structure of the corrugating roller according to any one of claims 1 to 6.

8. The corrugating roller according to claim 7, characterized in that: The air inlet end shaft head (32) is provided with a first inner cavity (321a), a second inner cavity (321b) and a third inner cavity (321c) which are interconnected; the end of the steam pipe core (5) not connected to the water return pipe (1) is used to block the third inner cavity (321c); the first steam channel (7) is connected to the second inner cavity (321b); and the air inlet end shaft head (32) is provided with a second steam channel (8) which is connected to the second inner cavity (321b).

9. The corrugating roller according to claim 7, characterized in that: A jacket (311) is formed between the inner wall and the outer wall of the corrugated roller body (31), and a condensate return channel (322) connected to the jacket (311) is provided on the air inlet end shaft head (32), and the condensate return channel (322) is connected to the water return hole (501).

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