Water spraying device for alumina fiber

Abstract

The utility model relates to a water spraying device for alumina fibers. Comprising a water needle plate, two water spraying structures are arranged on the water needle plate, each water spraying structure comprises two rows of water spraying holes, the water spraying holes are formed in the length direction of the water needle plate, and the four rows of water spraying holes of the two water spraying structures are arranged in a staggered mode; a first water distribution cavity and a second water distribution cavity are formed in the shell, a mounting hole matched with the water needle plate is formed in the shell, the water needle plate is mounted on the inner side of the mounting hole, the first water distribution cavity is communicated with the two rows of water spraying holes of one set of water spraying structure, and the second water distribution cavity is communicated with the two rows of water spraying holes of the other set of water spraying structure. Compared with a fixed water pressure mode of a single-channel water needle, the multiple water needles are arranged, so that alumina fibers can be fully wound, the working efficiency is improved, the entangling efficiency of the alumina fibers is improved, the damage effect of high-pressure continuous water needles on the fibers is reduced, and the device is particularly suitable for reinforcing low-gram-weight thin alumina fiber non-woven materials.

Description

Technical Field

[0001] The utility model belongs to the technical field of alumina fiber manufacturing, in particular to a water spraying device for alumina fiber. Background Art

[0002] Alumina fiber has the advantages of corrosion resistance, acid and alkali resistance, and high temperature resistance (>1200℃). The related fiber non-woven sheet materials are widely used in aerospace, fire prevention and explosion suppression, high temperature protection, blast furnace smelting and other fields. Alumina fiber is a metal oxide crystal fiber with a maximum operating temperature greater than 1200℃. The fiber is very brittle after sintering.

[0003] A water jet device is used to form a water needle impact limit for reinforcement. Conventional hydroentanglement reinforcement technology uses a single-channel water needle with a fixed water pressure for continuous impact. The following problems exist during use: the single-channel water needle has low working efficiency. In order to ensure working efficiency, the water pressure of the water needle needs to be increased. The concentrated water needle energy will cause irreversible damage to the alumina fiber. The high-pressure water needle is the main cause of the separation and damage of the alumina non-woven material. Utility Model Content

[0004] In view of this, the utility model aims to provide a water spraying device for alumina fibers, in order to solve at least one of the above-mentioned technical problems.

[0005] The utility model provides a water spraying device for alumina fibers, comprising:

[0006] A water needle plate, wherein two groups of water spray structures are provided on the water needle plate, each group of water spray structures includes two rows of water spray holes, the water spray holes are arranged along the length direction of the water needle plate, and the four rows of water spray holes of the two groups of water spray structures are arranged in a staggered manner;

[0007] A shell, wherein a first water diversion chamber and a second water diversion chamber are arranged in the shell, a mounting hole matching the water needle plate is opened on the shell, the water needle plate is installed on the inner side of the mounting hole, the first water diversion chamber is connected with two rows of water spray holes of one group of water spray structures, and the second water diversion chamber is connected with two rows of water spray holes of another group of water spray structures.

[0008] Furthermore, the two groups of water spray structures are respectively a first water spray structure and a second water spray structure;

[0009] The first water spray structure includes a first row of water spray holes and a third row of water spray holes, the first row of water spray holes includes a plurality of first water spray holes evenly arranged along the length direction of the water needle plate, and the third row of water spray holes includes a plurality of third water spray holes evenly arranged along the length direction of the water needle plate;

[0010] The second water spray structure includes a second row of water spray holes and a fourth row of water spray holes, the second row of water spray holes includes a plurality of second water spray holes evenly arranged along the length direction of the water needle plate, and the fourth row of water spray holes includes a plurality of fourth water spray holes evenly arranged along the length direction of the water needle plate;

[0011] The first row of water spray holes, the second row of water spray holes, the third row of water spray holes and the fourth row of water spray holes are arranged in sequence along the width direction of the water needle plate.

[0012] Furthermore, the first water spray holes in the first row of water spray holes are arranged correspondingly to the second water spray holes in the second row of water spray holes;

[0013] The third water spray hole of the third row of water spray holes is arranged correspondingly to the fourth water spray hole of the fourth row of water spray holes;

[0014] The first water spray hole corresponds to a position between two adjacent third water spray holes;

[0015] The width of the first water spray hole matches the width of the third water spray hole, and the width of the second water spray hole matches the width of the fourth water spray hole;

[0016] The width of the first water spray hole is greater than the width of the second water spray hole.

[0017] Furthermore, the water spray hole includes a straight hole portion and a tapered hole portion which are connected in sequence, the straight hole portion is connected to the water diversion chamber, the width of the tapered hole portion at one end adjacent to the straight hole portion matches the width of the straight hole portion, and the width of the tapered hole portion at one end away from the straight hole portion is greater than the width of the straight hole portion.

[0018] Furthermore, the first water diversion chamber is connected to the two first buffer chambers through a first connecting channel, and the number of the first connecting channels is multiple, and the multiple first connecting channels are evenly arranged along the length direction of the water needle plate;

[0019] The two first buffer chambers are respectively connected to the two first pressure stabilizing chambers through a plurality of second connecting channels, the plurality of second connecting channels are evenly arranged along the length direction of the water needle plate, and the two first pressure stabilizing chambers are respectively connected to the two rows of water spray holes of the first water spray structure;

[0020] The second water diversion chamber is connected to the two second buffer chambers through a plurality of third connecting channels, and the plurality of third connecting channels are evenly arranged along the length direction of the water needle plate;

[0021] The two second buffer chambers are respectively connected to the two second pressure stabilizing chambers through multiple fourth connecting channels, the multiple fourth connecting channels are evenly arranged along the length direction of the water needle plate, and the two second pressure stabilizing chambers are respectively connected to the two rows of water spray holes of the second water spray structure.

[0022] Furthermore, the first buffer cavity is a cylindrical cavity, and the diameters of the two first buffer cavities are different.

[0023] Furthermore, the second buffer cavity is a cylindrical cavity, and the diameters of the two second buffer cavities are different.

[0024] Furthermore, the shell is a structural component made of plastic material, and the water needle plate is a structural component made of stainless steel.

[0025] Furthermore, sealing plates with sealing openings are provided at both ends of the mounting hole, through holes are provided on the sealing plates, threaded holes corresponding to the through holes are provided on the shell, connecting bolts are provided in the through holes, and the connecting bolts pass through the through holes and are threadedly connected to the shell.

[0026] Furthermore, a strip-shaped through hole corresponding to the water spray holes is opened on the lower end surface of the installation hole, and each row of water spray holes corresponds to one strip-shaped through hole.

[0027] The utility model provides a water spraying device for aluminum oxide fiber, which has the following improvements compared with the prior art:

[0028] Four rows of water spray holes are used to form four water needles. Compared with the fixed water pressure mode of a single water needle, multiple water needles can fully entangle the alumina fibers, thereby improving work efficiency, increasing the entanglement efficiency of the alumina fibers, and reducing the destructive effect of high-pressure continuous water needles on the fibers. The water needles are particularly suitable for the reinforcement of low-weight and thin alumina fiber nonwoven materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 This is a schematic diagram of the three-dimensional structure of the device according to an embodiment of the utility model;

[0031] Figure 2 This is a schematic diagram of the three-dimensional structure of the housing according to an embodiment of the utility model;

[0032] Figure 3 For the embodiment of the utility model Figure 2 Schematic diagram of the structure at A in the middle;

[0033] Figure 4 This is a schematic diagram of the cross-sectional structure of the first connecting channel according to an embodiment of the utility model;

[0034] Figure 5 For the embodiment of the utility model Figure 4 Schematic diagram of the structure at B in the middle;

[0035] Figure 6 This is a schematic cross-sectional structure diagram of the third connecting channel according to an embodiment of the present utility model;

[0036] Figure 7 For the embodiment of the utility model Figure 6 Schematic diagram of the structure at C in the middle;

[0037] Figure 8 This is a schematic diagram of the three-dimensional structure of the water needle plate according to an embodiment of the utility model;

[0038] Fig. 9 It is a schematic diagram of the top view and cross-sectional structure of the water needle plate according to the embodiment of the utility model;

[0039] Fig.10 For the embodiment of the utility model Fig. 9 Schematic diagram of the structure at D in the middle;

[0040] Fig.11 For the embodiment of the utility model Fig. 9 Schematic diagram of the structure at E in the middle.

[0041] Description of reference numerals:

[0042] 1. Shell; 2. Water needle plate; 3. Sealing plate; 4. Connecting bolt; 101. Water inlet hole; 102. Threaded hole; 103. Mounting hole; 104. First water distribution chamber; 105. Second water distribution chamber; 106. First connecting channel; 107. Third connecting channel; 108. First buffer chamber; 109. Second buffer chamber; 110. First pressure-stabilizing chamber; 111. Second pressure-stabilizing chamber; 112. Strip through hole; 201. First water spray hole; 202. Second water spray hole; 203. Third water spray hole; 204. Fourth water spray hole; 20101. Straight hole portion; 20102. Conical hole portion. DETAILED DESCRIPTION

[0043] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] like Figures 1 to 11 As shown, a water spray device for aluminum oxide fiber includes: a water needle plate 2, on which two groups of water spray structures are arranged, each group of water spray structures includes two rows of water spray holes, the water spray holes are arranged along the length direction of the water needle plate 2, and the four rows of water spray holes of the two groups of water spray structures are arranged in a staggered manner; a shell 1, in which a first water diversion chamber 104 and a second water diversion chamber 105 are arranged, and a mounting hole 103 matching the water needle plate 2 is opened on the shell 1, and the water needle plate 2 is installed on the inner side of the mounting hole 103, the first water diversion chamber 104 is connected to the two rows of water spray holes of one group of water spray structures, and the second water diversion chamber 105 is connected to the two rows of water spray holes of the other group of water spray structures. The first water diversion chamber 104 and the second water diversion chamber 105 are respectively connected to the liquid outlet ends of two high-pressure water pumps through the water inlet hole 101.

[0047] The two groups of water spray structures are respectively the first water spray structure and the second water spray structure; the first water spray structure includes a first row of water spray holes and a third row of water spray holes, the first row of water spray holes includes a plurality of first water spray holes 201 evenly arranged along the length direction of the water needle plate 2, and the third row of water spray holes includes a plurality of third water spray holes 203 evenly arranged along the length direction of the water needle plate 2; the second water spray structure includes a second row of water spray holes and a fourth row of water spray holes, the second row of water spray holes includes a plurality of second water spray holes 202 evenly arranged along the length direction of the water needle plate 2, and the fourth row of water spray holes includes a plurality of fourth water spray holes 204 evenly arranged along the length direction of the water needle plate 2; the first row of water spray holes, the second row of water spray holes, the third row of water spray holes, and the fourth row of water spray holes are arranged in sequence along the width direction of the water needle plate 2.

[0048] The first water spray hole 201 of the first row of water spray holes is arranged correspondingly to the second water spray hole 202 of the second row of water spray holes; the third water spray hole 203 of the third row of water spray holes is arranged correspondingly to the fourth water spray hole 204 of the fourth row of water spray holes; the first water spray hole 201 corresponds to the position between two adjacent third water spray holes 203; the width of the first water spray hole 201 matches the width of the third water spray hole 203, and the width of the second water spray hole 202 matches the width of the fourth water spray hole 204; the width of the first water spray hole 201 is greater than the width of the second water spray hole 202.

[0049] The water spray hole includes a straight hole portion 20101 and a tapered hole portion 20102 which are connected in sequence. The straight hole portion 20101 is connected to the water diversion chamber. The width of the tapered hole portion 20102 at one end adjacent to the straight hole portion 20101 matches the width of the straight hole portion 20101. The width of the tapered hole portion 20102 at one end away from the straight hole portion 20101 is greater than the width of the straight hole portion 20101. The tapered hole portion 20102 further reduces the pressure of the water needle, ensures the operating range of the water needle and improves work efficiency without increasing the amount of water.

[0050] The first water-dividing chamber 104 is connected to the two first buffer chambers 108 through the first connecting channel 106. The number of the first connecting channels 106 is multiple, and the multiple first connecting channels 106 are evenly arranged along the length direction of the water needle plate 2; the two first buffer chambers 108 are respectively connected to the two first pressure-stabilizing chambers 110 through the multiple second connecting channels, and the multiple second connecting channels are evenly arranged along the length direction of the water needle plate 2. The two first pressure-stabilizing chambers 110 are respectively connected to the two rows of water spray holes of the first water spray structure; the second water-dividing chamber 105 is connected to the two second buffer chambers 109 through the multiple third connecting channels 107, and the multiple third connecting channels 107 are evenly arranged along the length direction of the water needle plate 2; the two second buffer chambers 109 are respectively connected to the two second pressure-stabilizing chambers 111 through the multiple fourth connecting channels, and the multiple fourth connecting channels are evenly arranged along the length direction of the water needle plate 2. The two second pressure-stabilizing chambers 111 are respectively connected to the two rows of water spray holes of the second water spray structure. The first buffer chamber 108 is a cylindrical chamber, and the diameters of the two first buffer chambers 108 are different. The second buffer cavity 109 is a cylindrical cavity, and the diameters of the two second buffer cavities 109 are different. By setting the first buffer cavity 108 and the second buffer cavity 109 with different diameters, the water pressure of the two rows of water spray holes in the same group of water spray structures can be further adjusted.

[0051] The shell 1 is a structural component made of plastic material and is integrally formed using printing technology. The water needle plate 2 is a structural component made of stainless steel, which extends the service life of the water needle plate 2.

[0052] The two ends of the mounting hole 103 are provided with sealing plates 3 with sealed openings, the sealing plates 3 are provided with through holes, the shell 1 is provided with threaded holes 102 corresponding to the through holes, the through holes are provided with connecting bolts 4, the connecting bolts 4 penetrate the through holes and are threadedly connected to the shell 1, and the water needle plate 2 can be easily replaced by disassembling the sealing plates 3, thereby improving the working efficiency. The lower end surface of the mounting hole 103 is provided with strip-shaped through holes 112 corresponding to the water spray holes, and each row of water spray holes is provided with a strip-shaped through hole 112.

[0053] Working process:

[0054] When this solution is implemented, four rows of multiple water spray holes are set to form four water needles, and the two water inlet holes 101 are respectively connected to the liquid storage ends of the two high-pressure water pumps. By controlling the water pressure of the two high-pressure water pumps respectively, the water pressure of the two rows of water spray holes in the same group of water spray structures can be further changed by setting the first buffer cavity 108 and the second buffer cavity 109 of different diameters. The pressures of the four water needles are different. Compared with the fixed water pressure mode of the single-channel water needle, the arrangement of multiple water needles can fully entangle the alumina fibers, thereby improving work efficiency.

[0055] The first row of water spray holes and the third row of water spray holes are group A, and the second row of water spray holes and the fourth row of water spray holes are group B. In the experiment, according to the processing speed of thin alumina non-woven materials of 0.1-4m / min and the product weight of 20-100gsm, the water needle penetration frequency range can be adjusted to 0-30Hz, the outlet of the water needle impact device is 3-8mm away from the alumina fiber mesh, and the height can be adjusted according to the weight of the fiber mesh. There is a negative pressure suction device at the bottom of the water needle impact device, and the suction area size is 25mm*1600mm, and the maximum suction volume is >10m3 / min.m.

[0056] The first row of spray holes, the second row of spray holes, the third row of spray holes, and the fourth row of spray holes are staggered, with a hole spacing of 0.7mm and a length of 0.55mm. The diameter of the 24 rows of spray holes is 0.1mm and the length is 0.55mm. The flow rate of each row can be adjusted individually, with a flow adjustment range of 0 to 1500L / min, and an overall maximum pressure threshold of ≥5Mpa. It improves the entanglement efficiency of alumina fibers and reduces the destructive effect of high-pressure continuous water on fibers. It is especially suitable for the reinforcement of low-weight thin alumina fiber nonwoven materials, with a maximum weight greater than 100gsm.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A water spraying device for alumina fiber, characterized in that: include: A water needle plate (2), wherein the water needle plate (2) is provided with two groups of water spray structures, each group of water spray structures comprises two rows of water spray holes, the water spray holes are arranged along the length direction of the water needle plate (2), and the four rows of water spray holes of the two groups of water spray structures are arranged in a staggered manner; A shell (1), wherein a first water diversion chamber (104) and a second water diversion chamber (105) are arranged in the shell (1), a mounting hole (103) matching a water jet plate (2) is opened on the shell (1), the water jet plate (2) is mounted on the inner side of the mounting hole (103), the first water diversion chamber (104) is connected to two rows of water jet holes of one group of water jet structures, and the second water diversion chamber (105) is connected to two rows of water jet holes of another group of water jet structures.

2. A water spraying device for alumina fiber according to claim 1, characterized in that: The two groups of water spray structures are respectively a first water spray structure and a second water spray structure; The first water spray structure comprises a first row of water spray holes and a third row of water spray holes, wherein the first row of water spray holes comprises a plurality of first water spray holes (201) evenly arranged along the length direction of the water needle plate (2), and the third row of water spray holes comprises a plurality of third water spray holes (203) evenly arranged along the length direction of the water needle plate (2); The second water spray structure comprises a second row of water spray holes and a fourth row of water spray holes, wherein the second row of water spray holes comprises a plurality of second water spray holes (202) evenly arranged along the length direction of the water needle plate (2), and the fourth row of water spray holes comprises a plurality of fourth water spray holes (204) evenly arranged along the length direction of the water needle plate (2); The first row of water spray holes, the second row of water spray holes, the third row of water spray holes and the fourth row of water spray holes are arranged in sequence along the width direction of the water needle plate (2).

3. A water spraying device for alumina fiber according to claim 2, characterized in that: The first water spray holes (201) of the first row of water spray holes and the second water spray holes (202) of the second row of water spray holes are arranged correspondingly; The third water spray hole (203) of the third row of water spray holes and the fourth water spray hole (204) of the fourth row of water spray holes are arranged correspondingly; The first water spray hole (201) corresponds to the position between two adjacent third water spray holes (203); The width of the first water spray hole (201) matches the width of the third water spray hole (203), and the width of the second water spray hole (202) matches the width of the fourth water spray hole (204); The width of the first water spray hole (201) is greater than the width of the second water spray hole (202).

4. The water spraying device for alumina fiber according to claim 1, characterized in that: The water spray hole comprises a straight hole portion (20101) and a tapered hole portion (20102) which are connected in sequence; the straight hole portion (20101) is connected to a water diversion chamber; the width of the tapered hole portion (20102) at one end adjacent to the straight hole portion (20101) matches the width of the straight hole portion (20101); and the width of the tapered hole portion (20102) at one end away from the straight hole portion (20101) is greater than the width of the straight hole portion (20101).

5. The water spraying device for alumina fiber according to claim 1, characterized in that: The first water diversion chamber (104) is connected to the two first buffer chambers (108) through a first connecting channel (106); there are a plurality of first connecting channels (106), and the plurality of first connecting channels (106) are evenly arranged along the length direction of the water needle plate (2); The two first buffer chambers (108) are respectively connected to the two first pressure stabilizing chambers (110) through a plurality of second connecting channels, the plurality of second connecting channels are evenly arranged along the length direction of the water needle plate (2), and the two first pressure stabilizing chambers (110) are respectively connected to the two rows of water spray holes of the first water spray structure; The second water diversion chamber (105) is connected to the two second buffer chambers (109) through a plurality of third connecting channels (107), and the plurality of third connecting channels (107) are evenly arranged along the length direction of the water needle plate (2); The two second buffer chambers (109) are respectively connected to the two second pressure stabilizing chambers (111) via a plurality of fourth connecting channels, the plurality of fourth connecting channels are evenly arranged along the length direction of the water needle plate (2), and the two second pressure stabilizing chambers (111) are respectively connected to the two rows of water spray holes of the second water spray structure.

6. A water spraying device for alumina fibers according to claim 5, characterized in that: The first buffer cavity (108) is a cylindrical cavity, and the diameters of the two first buffer cavities (108) are different.

7. The water spraying device for alumina fiber according to claim 5, characterized in that: The second buffer cavity (109) is a cylindrical cavity, and the diameters of the two second buffer cavities (109) are different.

8. The water spraying device for alumina fiber according to claim 1, characterized in that: The housing (1) is a structural component made of plastic material, and the water needle plate (2) is a structural component made of stainless steel.

9. The water spraying device for alumina fiber according to claim 1, characterized in that: Sealing plates (3) with sealing openings are correspondingly provided at both ends of the mounting hole (103), a through hole is provided on the sealing plate (3), a threaded hole (102) corresponding to the through hole is provided on the shell (1), a connecting bolt (4) is provided in the through hole, and the connecting bolt (4) passes through the through hole and is threadedly connected to the shell (1).

10. The water spraying device for alumina fiber according to claim 1, characterized in that: The lower end surface of the installation hole (103) is provided with a strip-shaped through hole (112) corresponding to the water spray holes, and each row of water spray holes corresponds to one strip-shaped through hole (112).

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