CN212316544U - Toilet paper machine steam cover with double diamond surfaces - Google Patents
Toilet paper machine steam cover with double diamond surfaces Download PDFInfo
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- CN212316544U CN212316544U CN201922158471.6U CN201922158471U CN212316544U CN 212316544 U CN212316544 U CN 212316544U CN 201922158471 U CN201922158471 U CN 201922158471U CN 212316544 U CN212316544 U CN 212316544U
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Abstract
The utility model relates to the field of toilet paper machine steam hoods, in particular to a toilet paper machine steam hood with double diamond surfaces, which comprises a steam hood main body, wherein the steam hood main body comprises a wet end steam hood and a dry end steam hood which are respectively arranged at the front side and the rear side; the steam hood main body also comprises a paper machine transmission side and a paper machine operation side which are respectively arranged at the left side and the right side; the steam cover main body is provided with an air outlet and an air inlet which correspond to the wet end steam cover; the steam cover main body is also provided with another air outlet and an air inlet which correspond to the dry-end steam cover; the steam hood main body also comprises two diamond surfaces on the left side and the right side of the top of the steam hood main body, wherein one diamond surface is arranged on the same side as the paper machine operation side, and the other diamond surface is arranged on the same side as the paper machine transmission side. The steam cover main body is also provided with a blowing box and an air suction opening corresponding to the blowing box. The utility model discloses the two-sided diamond face that the embodiment provided is more optimized than operation side single face diamond face air flue, and suction moisture efficiency is higher.
Description
Technical Field
The utility model relates to a toilet paper machine vapour cover field specifically is a toilet paper machine vapour cover of two diamond faces.
Background
The low-speed paper machine (generally, the speed of a Yankee cylinder is less than 1000mpm) steam hoods are mostly of a suction type, and the steam hoods are basically characterized in that only one cavity is provided, and water vapor is generally directly extracted out, or a certain amount of hot air is supplemented into the steam hoods in order to prevent condensation in the steam hoods. The low speed machine hood is not discussed herein. The high-speed paper machine (the speed of a Yankee cylinder is generally more than or equal to 1000mpm, a steam cover of the high-speed paper machine generally consists of a steam cover at a wet end and a steam cover at a dry end (a steam cover with three cavities is fresh), and is provided with a hot air circulating system which basically has the following three shapes of a flat top shape, a bevel edge shape and an arc top shape;
in actual production, shoe pressure is compared with shoe pressure, a vacuum press roll is compared with a vacuum press roll, the shoe press is also a shoe press, and a flat top type steam cover is more than a circular arc type steam cover and uses 0.36t/t of steam; as the vacuum press roll paper machine is adopted, the bevel edge type steam hood is optimized compared with a flat top type steam hood due to the air exhaust channel, and the steam consumption is reduced by 0.17t/t paper. The basic logic may determine: steam dosage per ton paper: circular arc steam cover < hypotenuse formula < flat top formula. (of course, different steam condensate system equipment manufacturers and slightly different hot air systems are not excluded, which may have an effect on steam usage, but are considered secondary factors and may not have an effect on a large directional thinking, since the steam condensate systems provided with these machines are essentially the same product.)
It can be seen that the form of the hood is highly dependent on the amount of steam used per ton of paper.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a toilet paper machine vapour cover of two diamond faces to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a toilet paper machine steam cover with double diamond surfaces comprises a steam cover main body, wherein the steam cover main body comprises a wet end steam cover and a dry end steam cover which are respectively arranged at the front side and the rear side; the steam hood main body also comprises a paper machine transmission side and a paper machine operation side which are respectively arranged at the left side and the right side; wherein the content of the first and second substances,
the steam cover main body is provided with an air outlet and an air inlet which correspond to the wet end steam cover;
the steam cover main body is also provided with another air outlet and an air inlet which correspond to the dry-end steam cover;
the steam hood main body also comprises two diamond surfaces on the left side and the right side of the top of the steam hood main body, wherein one diamond surface is arranged on the same side as the paper machine operation side, and the other diamond surface is arranged on the same side as the paper machine transmission side;
the steam cover main body is also provided with a blowing box and an air suction opening corresponding to the blowing box.
The length of the diamond surface on the operation side of the paper machine in the horizontal direction is L2, the length of the top surface of the steam hood body in the horizontal direction is L1, the ratio of L2/L1 ranges from 0.1 to 1.5, and preferably, the ratio of L2/L1 ranges from 0.3 to 0.6;
the included angle between the top surface of the steam hood main body and the diamond surface on the operation side of the paper machine is alpha, and the alpha angle ranges from 10 degrees to 80 degrees; preferably, the angle α is in the range of 45 ° -65 °;
the cross section of the end of the air inlet pipe is gradually reduced as the air inlet pipe and the suction pipe are required to transversely maintain the high-speed flow velocity of the air blowing/sucking at the end. The vertical height of the diamond surface on the operation side of the paper machine is H2, and the height between the top surface of the steam hood main body and the top surface of the steam hood cavity is H1, wherein H2/H1 ranges from 0.3 to 1.2, and preferably H2/H1 ranges from 0.5 to 0.9.
The chamfering of the corner angle of the steam cover is to reduce the dead angle as much as possible;
the height between the bottom edge of the secondary diamond surface of the operation side of the paper machine and the top edge of the steam hood cavity is H3, and H1/H3 ranges from 0.8 to 1.2;
the length of the diamond surface on the transmission side of the paper machine in the horizontal direction is L3, and the range of L3/L1 is 0.1-1.
The steam cover operating side and the transmission side are provided with five edges which are respectively a top edge A and a secondary top edge B and a secondary top edge C which are symmetrically provided with two sides of the top edge A and are sequentially arranged, and the proportion of the top edge A to the secondary top edge B is 1-1.3; the ratio of the second top edge B to the second top edge C is 1-1.3.
Compared with the prior art, the utility model discloses diamond face vapour cover has reduced the vapour cover dead angle, and the compression space of bleeding has reduced the suction of fan, also reduces and supplies the hot-blast air inlet temperature of vapour cover, has just also reduced the fresh steam consumption, and the actual operating power of motor also has certain reduction. High-speed toilet paper machine yankee jar vapour cover, the utility model discloses the two-sided diamond face is operation side and transmission side vapour cover angle change, and inside runner improves. To sum up, the utility model discloses the two-sided diamond face that the embodiment provided is received more optimizes than operation side single face diamond face air flue, and suction moisture efficiency is higher.
Drawings
In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
Fig. 1 is a three-dimensional structure diagram of a toilet paper machine steam cover with double diamond surfaces provided by the embodiment of the utility model at a viewing angle.
Fig. 2 is a three-dimensional structure diagram of a toilet paper machine steam cover with double diamond surfaces, provided by the embodiment of the utility model, at another viewing angle.
Fig. 3 is a schematic diagram showing a relationship between sizes of a steam cover of a toilet paper machine with double diamond surfaces according to an embodiment of the present invention.
Fig. 4 is a schematic diagram showing the relationship between the two sizes of the steam cover of the toilet paper machine with two diamond surfaces according to the embodiment of the present invention.
In the figure: 1-transmission side of paper machine, 2-air outlet, 3-wet end steam cover, 4-air inlet, 5-air blowing box, 6-brick stone surface, 7-air suction inlet, 8-operation side of paper machine and 9-dry end steam cover.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The rotating speed of the yankee cylinder of the toilet paper machine is within the range of 1000-2200mpm and is generally called as a high-speed toilet paper machine, the yankee cylinder steam cover of the high-speed toilet paper machine is discussed in the application, the double-faced diamond surfaces are the angle changes of the steam cover at the operation side and the transmission side, and the internal flow channel is improved.
The utility model discloses the two-sided diamond face that the embodiment provided is more optimized than operation side single face diamond face air flue, and suction moisture efficiency is higher.
In order to optimize a flow passage in the steam hood, the power of a fan is small, the wet air accumulated in the steam hood is quickly pumped away, and the phenomenon that the wet air is gathered and condensed to drip water (particularly in a dead angle at a far end) and flows onto a paper web page to cause defective products is prevented. A diamond faced vapor hood thought has thus developed. The diamond surface steam cover reduces the dead angle of the steam cover, compresses the steam extraction space, reduces the suction force of the fan, also reduces the hot air inlet temperature of the steam supply cover, also reduces the fresh steam consumption, and can reduce the actual operation power of the motor to a certain extent, therefore, the diamond surface is manufactured on the steam cover side.
The included angle (side surface and top surface) of the side of the existing steam cover is an angle of approximately 90 degrees, the angle at the far end is easy to form dead angle of air flow, and wet air is difficult to be quickly discharged at the corner part of the steam cover. In a paper machine having a cross-web of 5.6m according to the constant velocity line of the suction duct, if the flow rate at the center of the suction duct is 20m/s, the flow rate at the side of the duct is about 10m/s, and the velocity of moisture at 9.5m from the nozzle is only about 0.32m/s, which is difficult to extract. If small drops gather at the distal corners and coalesce into large drops, the water drops drip at the top and at the Yankee cylinder suction opening and then onto the sheet, resulting in large holes in the sheet and unacceptable product. In order to avoid the situation, the production personnel increase the using amount of the fresh steam of the steam hood steam heat exchanger, thereby causing the using amount of the steam of the hot air circulating system of the steam hood to be greatly increased.
It can be seen that the space of the farthest end of the suction pipe is reduced, which is beneficial to quickly exhausting steam. Therefore, the flow path in the steam cover on the operation surface side of the steam cover is compressed, and the side surface looks like a diamond polyhedron. For the convenience of memory, we call it "diamond face" steam cover.
The moving speed of the moisture molecules at the far end is increased, so that the moisture at the far end can be rapidly extracted (equal to the speed increase of the isovelocity surface). The steam cover has wet end and dry end two parts, and the air inlet is in outside both sides, and two middle pipes are the extraction opening, and the position of extraction opening is on the middle upper portion of steam cover cambered surface basically, and damp and hot steam all moves to the top because of the high temperature, and the circulation face that the top has been reduced forces the moisture to move to the steam extraction mouth of pipe rapidly, and the steam extraction pipe can discharge the moisture rapidly.
Referring to fig. 1-2, in an embodiment of the present invention, a steam cover of a toilet paper machine with dual diamond surfaces comprises a steam cover main body, wherein the steam cover main body comprises a wet end steam cover 3 and a dry end steam cover 9 which are respectively arranged at the front side and the rear side; the steam hood main body also comprises a paper machine transmission side 1 and a paper machine operation side 8 which are respectively arranged at the left side and the right side; wherein the content of the first and second substances,
the steam cover main body is provided with an air outlet 2 and an air inlet 4 which correspond to the wet end steam cover 3;
the steam cover main body is also provided with another air outlet 2 and an air inlet 4 which correspond to the dry end steam cover 9;
the steam hood main body also comprises two diamond surfaces 6 on the left side and the right side of the top of the steam hood main body, wherein one diamond surface 6 is arranged on the same side as the paper machine operation side 8, and the other diamond surface 6 is arranged on the same side as the paper machine transmission side 1.
The steam cover main body is also provided with a blowing box 5 and an air suction opening 7 corresponding to the blowing box 5.
As shown in fig. 3, the length of the diamond face 6 in the horizontal direction on the machine operation side 8 is L2, the length of the top face of the hood body in the horizontal direction is L1, the ratio of L2/L1 is in the range of 0.1 to 1.5, preferably, the ratio of L2/L1 is in the range of 0.3 to 0.6;
the included angle between the top surface of the steam hood main body and the diamond surface 6 of the paper machine operation side 8 is alpha, and the alpha angle ranges from 10 degrees to 80 degrees; preferably, the angle α is in the range of 45 ° -65 °;
the cross section of the end of the air inlet pipe is gradually reduced as the air inlet pipe and the suction pipe are required to transversely maintain the high-speed flow velocity of the air blowing/sucking at the end. The vertical height of the diamond face 6 of the machine operation side 8 is H2, and the height between the top face of the hood body and the top face of the hood cavity is H1, wherein H2/H1 ranges from 0.3 to 1.2, and preferably H2/H1 ranges from 0.5 to 0.9.
The chamfering of the corner angle of the steam cover is to reduce the dead angle as much as possible;
the height between the bottom edge of the diamond face 6 of the paper machine operation side 8 and the top edge of the hood cavity is H3, and H1/H3 ranges from 0.8 to 1.2;
the length of the diamond surface 6 of the transmission side 1 of the paper machine in the horizontal direction is L3, and the range of L3/L1 is 0.1-1.
As shown in fig. 4, the operating side and the transmission side of the steam cover have five sides, namely a top side a and a secondary top side B and a secondary top side C which are symmetrically provided with two sides of the top side a and are arranged in sequence, and the ratio of the top side a to the secondary top side B is 1-1.3; the ratio of the second top edge B to the second top edge C is 1-1.3. The D side may or may not be present.
The embodiment of the utility model provides a theory of operation is:
hot air enters the steam cover: the hot air inlet pipe enters a header pipe in the steam cover at a high speed (more than 100m/s), the hot air header pipe is divided into a plurality of secondary air distributing pipes, the secondary air distributing pipes divide hot air into hot air boxes along the surface of the Yankee cylinder, a plurality of round holes with the diameter of 0.6-1cm are formed in the blowing surface of each hot air box facing the Yankee cylinder, hot air is sprayed onto paper sheets through the round holes to destroy the saturated partial pressure of moisture accumulated on the surface of wet paper sheets, the moisture in the wet paper sheets is accelerated to move towards the surface of the paper sheets and further leave the paper sheets to enter air, and the air and the wet steam are combined together to form the moisture in the steam cover.
Moisture discharge: a gap of 8-20cm is reserved between each hot air box to form a suction opening, when the steam hood exhaust pipe sucks air from the steam hood, moisture on the paper surface enters the steam hood through the suction opening (the entering speed is about 10m/s), then the speed can be suddenly reduced to about 0.3m/s, the moisture enters the suction pipe along the direction of the bottom line height of the speed surface, and the speed in the suction pipe can reach more than 20 m/s.
Because the humid air contains a large amount of heat value, a circulating hot air system can be designed for the steam cover of the high-speed paper machine, about 50 percent of the humid hot air is mixed with fresh hot air again to enter the steam cover for recycling, and the heat utilization efficiency is improved.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The double-diamond-surface toilet paper machine steam hood is characterized by comprising a steam hood main body, wherein the steam hood main body comprises a wet end steam hood (3) and a dry end steam hood (9) which are respectively arranged at the front side and the rear side; the steam hood main body also comprises a paper machine transmission side (1) and a paper machine operation side (8) which are respectively arranged at the left side and the right side; wherein, the steam cover main body is provided with an air outlet (2) and an air inlet (4) which correspond to the wet end steam cover (3); the steam cover main body is also provided with another air outlet (2) and an air inlet (4) which correspond to the dry end steam cover (9);
the steam hood main body also comprises two diamond surfaces (6) on the left side and the right side of the top of the steam hood main body, wherein one diamond surface (6) is arranged on the same side of the paper machine operation side (8), and the other diamond surface (6) is arranged on the same side of the paper machine transmission side (1);
the steam cover main body is also provided with a blowing box (5) and an air suction opening (7) corresponding to the blowing box (5).
2. The double diamond faced toilet paper machine hood according to claim 1, characterized in that the diamond face (6) on the machine operating side (8) has a length L2 in the horizontal direction, and the top face of the hood body has a length L1 in the horizontal direction;
the ratio of L2/L1 ranged between 0.1 and 1.5.
3. The dual diamond faced toilet paper machine hood according to claim 2, wherein the ratio of L2/L1 is in the range of 0.3-0.6.
4. A double diamond-faced toilet paper machine steam hood according to any of claims 1-3, characterized in that the angle between the top face of the steam hood body and the diamond face (6) of the machine operating side (8) is α, which is in the range of 10 ° -80 °.
5. The dual diamond-faced toilet paper machine hood according to claim 4, wherein the angle α is in the range of 45 ° -65 °.
6. Double diamond-faced toilet paper machine steam hood according to claim 4, characterized in that the vertical height of the diamond face (6) of the machine operating side (8) is H2, and the height between the top face of the steam hood body and the top face of the steam hood cavity is H1;
wherein, H2/H1 is in the range of 0.3-1.2.
7. The dual diamond faced toilet paper machine hood according to claim 6, wherein H2/H1 is in the range of 0.5-0.9.
8. Double diamond faced toilet paper machine hood according to claim 6, characterized in that the height between the bottom edge of the diamond face (6) of the machine operating side (8) and the top edge of the hood cavity is H3, H1/H3 ranging from 0.8 to 1.2.
9. Double diamond faced toilet paper machine steam hood according to claim 8, characterized in that the length of the diamond face (6) of the machine drive side (1) in the horizontal direction is L3, L3/L1 ranging from 0.1 to 1.
10. The double-diamond-faced toilet paper machine steam cover according to any one of claims 1 to 3, wherein the operating side and the driving side each have five sides, namely a top side A and a secondary top side B and a secondary top side C which are symmetrically arranged on both sides of the top side A and are arranged in sequence, and the ratio of the top side A to the secondary top side B is 1 to 1.3; the ratio of the second top edge B to the second top edge C is 1-1.3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922158471.6U CN212316544U (en) | 2019-12-05 | 2019-12-05 | Toilet paper machine steam cover with double diamond surfaces |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922158471.6U CN212316544U (en) | 2019-12-05 | 2019-12-05 | Toilet paper machine steam cover with double diamond surfaces |
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| CN212316544U true CN212316544U (en) | 2021-01-08 |
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| CN201922158471.6U Active CN212316544U (en) | 2019-12-05 | 2019-12-05 | Toilet paper machine steam cover with double diamond surfaces |
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