Reusable fastening assembly

Abstract

The utility model relates to a reusable fastening assembly which comprises a rod and a fastening cap, a ratchet portion extending axially is arranged on the outer contour of the rod, and the ratchet portion is formed by sequentially arranging a plurality of ratchets in the axial direction of the rod. A pawl part which can be matched with the ratchet part is arranged on the fastening cap; when the fastening cap is connected with the rod, the fastening cap is limited to only move in one direction; a connecting part is arranged between the pawl part and the fastening cap; and the pawl part and the ratchet part have a separation state when the connecting part deforms and an occlusion state when the connecting part resets, so that the fastening cap in the fastening assembly can be mounted and dismounted, and repeated utilization is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling towers, in particular to a reusable fastening assembly used for assembling filler modules and connecting filler modules in a cooling tower. Background Art

[0002] like Figure 1 As shown, the packing module 1 is used for heat exchange between cold air and hot water in the cooling tower. A hot water inlet is formed on one side of the upper portion of the packing module 1 in the width direction, and an air outlet is formed on the other side of the upper portion of the packing module 1 in the width direction. An air inlet for the flow of external air is formed on one side or the other side of the lower portion of the packing module 1 in the width direction, and a water outlet is formed on one side or the other side of the lower portion of the packing module 1 in the width direction.

[0003] During the construction of the cooling tower, it is necessary to install a filler module 1 inside the cooling tower. In some technical solutions, a frame is set outside the filler module 1 to achieve connection and fixation between the filler modules, which increases the manufacturing cost of the filler module and the cooling tower, increases wind resistance, and makes construction difficult. Utility Model Content

[0004] In view of the above-mentioned prior art, the present invention provides a reusable fastening assembly, comprising:

[0005] A rod, wherein an axially extending ratchet portion is provided on an outer contour of the rod, and the ratchet portion is formed by a plurality of ratchet teeth arranged in sequence along the axial direction of the rod;

[0006] a fastening cap connectable to the rod, the fastening cap having a pawl portion capable of cooperating with the ratchet portion; a connecting portion being defined between the pawl portion and the fastening cap; the pawl portion and the ratchet portion being in a separated state when the connecting portion is deformed, and in an engaged state when the connecting portion is restored;

[0007] In the engaged state, the fastening cap is limited to being able to move in only one direction; in the disengaged state, the fastening cap is able to freely move in two directions along the rod.

[0008] As a preferred embodiment, the fastening cap has a central hole, and when the rod passes through the central hole, the pawl portion is connected to the ratchet portion.

[0009] As a preferred embodiment, the connecting portion has a necking structure with a locally reduced diameter.

[0010] As a preferred embodiment, an operating portion is formed at the free end of the pawl portion, and the position of the operating portion is suitable for causing the connecting portion to deform when subjected to force.

[0011] As a preferred embodiment, a free end of the pawl portion extends away from the fastening cap to form an operating portion.

[0012] As a preferred embodiment, a free end of the pawl portion extends away from the fastening cap and deflects radially outward of the fastening cap to form an operating portion.

[0013] As a preferred embodiment, the rod has a first end and a second end disposed opposite to each other. The ratchet portion includes a first ratchet portion and a second ratchet portion provided on an outer contour of the rod; the fastening cap includes a first fastening cap and a second fastening cap; a pawl portion of the first fastening cap is connected to the first ratchet portion and is defined to be unidirectionally movable only from the first end to the second end direction in the engaged state; a pawl portion of the second fastening cap is connected to the second ratchet portion and is defined to be unidirectionally movable only from the second end to the first end direction in the engaged state.

[0014] As a preferred embodiment, the rod has a first end and a second end disposed opposite to each other. An end portion with a diameter decreasing towards the top is formed at the first end; a fixing portion protrudes radially outward at the second end.

[0015] According to the present invention, the pawl portion and the ratchet portion have a separated state when a connecting portion is deformed, and an engaged state when the connecting portion is reset. Further, the above-mentioned connecting portion can be deformed through the above-mentioned operating portion, so that the pawl portion and the ratchet portion are disengaged from engagement, so as to separate the fixing cap from the rod, enabling the fastening assembly to be disassembled and reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of a partial structure on an upper side of a packing module and a connection structure between two packing modules;

[0017] Figure 2 It is a structural diagram of a fastener according to an embodiment of the present invention;

[0018] Figure 3 For Figure 2 a side view of;

[0019] Figure 4 It is a structural diagram of a fastener according to another embodiment of the present invention;

[0020] Figure 5 For Figure 4 a structural diagram of the shown fastener from another perspective;

[0021] Figure 6 It is a schematic diagram of an installation structure of a fastener according to an embodiment of the present invention on a packing module;

[0022] Figure 7 For Figure 1Another perspective of the shown packing module and the structural diagram after assembly;

[0023] Figure 8 Structural diagram of a fastener according to another embodiment of the present invention;

[0024] Figure 9 Schematic diagram of the installation structure of a fastener according to an embodiment of the present invention on a packing module;

[0025] Figure 10 Structural diagram of a fastening component according to an embodiment of the present invention;

[0026] Figure 11 is Figure 10 Cross-sectional view of the shown fastening component;

[0027] Figure 12 Schematic diagram of the structure of the fastening component of the present invention applied to the packing module;

[0028] Figure 13 Cross-sectional view of a fastening component according to another embodiment of the present invention;

[0029] Figure 14 Schematic diagram of the structure of a packing module according to an embodiment of the present invention;

[0030] Figure 15 Schematic diagram of the structure of a packing module according to another embodiment of the present invention;

[0031] Figure 16 Usage example of the water leakage prevention system of the present invention;

[0032] Figure 17 Schematic diagram of the structure of a cooling tower according to an embodiment of the present invention.

[0033] Symbol description

[0034] 1, 1a, 1b, packing module;

[0035] 11, first upper end opening; 12, second upper end opening;

[0036] 13, top connection edge; 14, side connection edge;

[0037] 15, upper edge sealing part;

[0038] A, packing sheet A; B, packing sheet B;

[0039] [[ID=6b]]C, protrusion sealing part; C1, first protrusion part; C2, second protrusion part;

[0040] D, sealing connection part; D1, first connection part; D2, second connection part; D3, through hole part;

[0041] R1, first flow path; R2, second flow path;

[0042] U, packing unit

[0043] 20, 20' fasteners;

[0044] 21, side wall; 22, top wall; 23, flanging part; 24, notch;

[0045] 25, fastening part; 251, rib; 26, lapping groove; 27, bending structure; 28, receiving groove;

[0046] 29, extension section; 210, water leakage prevention space; 211, side wall body;

[0047] 30, 30', fastening assemblies;

[0048] 31, 31' rods; 32, 32' ratchet parts; 33, 33', fastening caps; 34, pawl parts; 35, operating parts;

[0049] 36, fixing part; 37, first fastening surface; 38, second fastening surface; 39, connecting part;

[0050] 40, sealing strip; 41, fastening groove; 42, end; 43, middle hole;

[0051] 100, water leakage prevention system;

[0052] 1000, cooling tower;

[0053] 101, intake layer; 102, air damper; 103, packing layer;

[0054] 104, spraying part; 105, partition; 105a, spraying space; 105b, air guiding space; 106, exhaust layer; 107, fan; 108, exhaust port. Detailed implementation manners

[0055] Next, with reference to the accompanying drawings, the preferred implementation manners of the present utility model will be described in detail.

[0056] The packing module 1 includes packing sheets A and B that are alternately stacked, and the first flow path R1 and the second flow path R2 are formed in each packing module by the stacked packing sheets A and B.

[0057] For ease of description, Figure 1 two adjacent packing modules 1 in [reference figure] are respectively labeled as packing module 1a and packing module 1b. The stacking direction of the packing module 1 is 4] Figure 1 the front - back direction in [reference figure], and the width direction of the packing module 1 is Figure 1 the left - right direction in [reference figure].

[0058] Figure 1 The upper-side partial structure of the packing modules 1a and 1b and the connection structure between the two packing modules are shown. For clear demonstration, Figure 1 the connection gap between the packing module 1a and the packing module 1b is enlarged in the figure.

[0059] As Figure 1 shown, on one side perpendicular to the stacking direction (the left side in the figure), the upper end of the packing sheet A deflects towards one side in the stacking direction (the back side in the figure), while the upper end of the packing sheet B deflects towards the opposite side (the front side in the figure), so that from Figure 1 the front side to the back side in the stacking direction, the upper left ends of the packing sheets A - B are in contact with each other, while the upper left ends of the packing sheets B - A are open to each other to form the first upper opening 11. For the packing modules 1a and 1b, a plurality of the first upper openings 11 are arranged in parallel in the stacking direction. The first upper opening 11 communicates with the first flow path R1 formed between the packing sheets B - A.

[0060] On the other side perpendicular to the stacking direction (the right side in the figure), the upper end of the packing sheet A deflects towards the other side in the stacking direction (the front side in the figure), while the upper end of the packing sheet B deflects towards the opposite side, so that from the front side to the back side in the stacking direction in the figure, the upper right ends of the packing sheets B - A are in contact with each other, while the upper right ends of the packing sheets A - B are open to each other to form the second upper opening 12. For each of the packing sheets 1a and 1b, a plurality of the second upper openings 12 are arranged in parallel in the stacking direction. The second upper opening 12 communicates with the second flow path R2 formed between the packing sheets A - B.

[0061] As Figure 1 shown, at the right edge in the width direction of the packing modules 1a and 1b, in order to form a seal for the second flow path R2, the right edge of the packing sheet A deflects towards one side in the stacking direction (the back side in the figure), extends, then deflects to the right and extends to form the first connecting portion D1; while the right edge of the packing sheet B deflects towards the other side in the stacking direction (the front side in the figure), extends, and then extends to the right to form the second connecting portion D2. The first connecting portion D1 of the packing sheet A and the second connecting portion D2 of the packing sheet B can be connected by ultrasonic welding, bonding or other means to form a sealed connecting portion D.

[0062] Preferably, mutually engaged grooves and ridges can also be provided on the above-mentioned first connecting portion D1 and second connecting portion D2, so as to improve the sealing performance of the above-mentioned sealed connecting portion D. For example, vertical grooves can be provided on the surface of the first connecting portion D1 facing the second connecting portion D2, and vertical ridges matching the above grooves can be provided on the surface of the second connecting portion D2 facing the first connecting portion D1; vice versa.

[0063] Through the above-mentioned deflection and sealing connection structure, an edge sealing structure of the second flow path R2 is formed between the packing sheets A and B on the right side in the width direction of the packing modules 1a and 1b.

[0064] In one of the second flow paths R2, the adjacent packing sheets A and B on both sides in the stacking direction form a packing unit U. At the same time, since the first flow path R1 and the second flow path R2 are alternately stacked, in order to form a sealing edge of the first flow path R1, at the right side in the width direction of the packing modules 1a and 1b, the top ends of two adjacent packing units U can form a top connection edge 13 by bonding or the like, and the right ends of two adjacent packing units U can form a right end connection edge 14 by bonding or the like.

[0065] When assembling the packing module, first, a plurality of the above-mentioned packing units U are formed by ultrasonic welding the packing sheets A and B. Then, a plurality of the above-mentioned packing units U are formed into a packing module by bonding or the like. Ultrasonic welding has the advantages of good sealing performance and strong durability. However, due to structural limitations, it is difficult to perform ultrasonic welding between the packing units U.

[0066] In use, the packing modules 1a and 1b are used for heat exchange between cold air and hot water in the cooling tower. At the upper part of the packing modules 1a and 1b, a hot water inlet is formed on one side in the width direction, and an air outlet is formed on the other side in the width direction. At the lower part of the packing modules 1a and 1b, an air inlet for flowing in external air is formed on one side or the other side in the width direction, and a water outlet is formed on the other side or one side in the width direction.

[0067] Taking the first flow path R1 as the air flow path and the second flow path R2 as the water spray flow path as an example, hot water is sprayed into the second upper opening 12 on the right side of the packing modules 1a and 1b. However, if there is leakage at the sealed connection (top edge and edge in the width direction) between the packing sheet B and the packing sheet A, the hot water will enter the first flow path R1 through which air flows. Especially in winter in the north, when the external air temperature is below zero, the water leaking into the first flow path R1 will quickly freeze, blocking the first flow path R1 and even damaging the packing modules 1a and 1b and the cooling tower, causing significant losses.

[0068] When installing the packing module inside the cooling tower, the above problems will also occur due to leakage at the connection gap between adjacent packing modules 1a and 1b. In order to form a seal on the connection surface between the packing modules 1a and 1b, the inventors of the present application have tried various technical means.

[0069] For example, glue is applied at the joint surface of the packing modules 1a and 1b. However, during on-site construction, the setting of the glue is affected by factors such as environmental temperature and humidity. Especially in winter, the glue sets slowly, making it easy to generate leakage points.

[0070] Another example is that a sealing material is filled between the packing modules 1a and 1b. Since the sealing material can only produce a sealing effect when it is subjected to sufficient extrusion pressure to reach a certain deformation amount, and the packing sheet is a plastic thin sheet, it is difficult to form sufficient extrusion pressure on the sealing material; if a frame is provided outside the packing modules 1a and 1b, it will increase the manufacturing cost of the packing module and the cooling tower, increase the wind resistance, and the construction difficulty and the risk of water leakage are still relatively high.

[0071] For the above reasons, the sealing between the packing modules in the stacking direction has become a technical problem that is difficult to solve and urgently needs to be solved. The inventors of the present application have conducted in-depth exploration and practice, and finally systematically and ingeniously solved the above technical problem, which will be described in detail below.

[0072]

Fastener 20

[0073] Figure 2 It is a structural diagram of the fastener 20 according to an embodiment of the present utility model; Figure 3 is Figure 2 a side view; Figure 4 It is a structural diagram of the fastener 20 according to another embodiment of the present utility model; Figure 5 is Figure 4 a structural diagram of the fastener 20 shown in another perspective; Figure 6 It is a schematic installation structure diagram of the above fastener 20 on the packing module.

[0074] As Figures 2 to 6 shown, the fastener 20 includes a side wall 28 and a top wall 22 connected to the top end of the side wall 28 and extending to one side, and a water leakage prevention space 210 is formed below the top wall 22. The top wall 22 is used to block the end position of the connection gap on the upper side of the packing modules 1a and 1b, and the side wall 28 blocks the connection gap between the two modules from one side in the width direction of the packing modules 1a and 1b.

[0075] In some embodiments, the upper surface of the above top wall 22 is configured to be inclined. As Figure 3 shown, the left end of the upper surface of the top wall 22 is higher than its right end, and the water pouring down from the upper side can flow quickly from left to right and is not easily introduced into the above water leakage prevention space 210. In addition, the upper surface of the top wall 22 can also be configured such that the right end is higher than the left end, and the water pouring down from the upper side can flow quickly from right to left; or, the upper surface of the top wall 22 is configured to be higher in the middle and lower on both sides in the left-right direction, which can all play a role of guiding the water to the corresponding flow path to prevent the water from being poured into the water leakage prevention space 210.

[0076] As Figure 2 , Figure 3 and Figure 6 shown, in some embodiments, a fastening portion 25 may further be provided on the lower side of the top wall 22. The fastening portion 25 is configured to be snapped into the second upper end opening 12 at the top of the packing modules 1a and 1b to achieve the connection of the fastener 20 with the packing modules 1a and 1b. Specifically, a part of the fastening portion 25 of the fastener 20 is snapped into the second upper end opening 12 of the packing module 1a, and the remaining part of the fastening portion 25 is snapped into the second upper end opening 12 of the packing module 1b.

[0077] As Figure 2 shown, in order to reduce wind resistance, a notch 24 is further provided on the top wall 22 of the fastener 20 in some embodiments. The shape of the notch 24 is adapted to the shape of the second upper end opening 12 in the packing modules 1a and 1b at the edges in the width direction of the packing modules 1a and 1b.

[0078] In order to prevent water from flowing in through the gap between the lower surface of the top wall 22 and the top edge of the packing modules 1a and 1b, the fastening portion 25 of the fastener 20 is configured to be adapted to the shape of the notch 24 and extend downward for a certain length, that is, when the fastener 20 is snapped onto the connection of the packing modules 1a and 1b, the fastening portion 25 can be snapped into the second upper end opening 12 and seal the above-mentioned gap.

[0079] The length that the above-mentioned fastening portion 25 extends downward is configured to gradually increase from the top wall 22 to the side wall 21 and form a lowest point near the top end of the side wall 21. The above structure is beneficial to the water on the surface of the fastening portion 25 to converge at the lowest point and drip onto the inner surfaces of the packing sheets A and B, thereby improving the heat exchange efficiency of air and water.

[0080] A narrow overlapping groove 26 is formed between two adjacent fastening portions 25. The overlapping groove 26 is snapped onto the top connection edge 13 of the packing sheet B and the packing sheet A, and can be assisted by methods such as applying glue and filling sealing materials to prevent water from leaking through the gap between the top connection edge 13 and the overlapping groove 26. As a preference, a sealing strip 40 may be snapped onto the above-mentioned top connection edge 13. The cross section of the sealing strip 40 is generally U-shaped and has a fastening groove 41 with an opening downward for connecting with the above-mentioned top connection edge 13. Placing the above-mentioned top connection edge 13 into the fastening groove 41 can play a waterproof role in the connection gap between the packing sheets at the above-mentioned top connection edge 13.

[0081] The cross-sectional outer shape structure of the sealing strip 40 may be adapted to the shape of the overlapping groove 26, so that when installed, the end of the sealing strip 40 can be embedded into the overlapping groove 26. The cross-sectional outer shape structure of the sealing strip 40 may have a circular arc shape at the top or a flat surface at the top.

[0082] On both sides of the width direction of the side wall 28 of the fastener 20 (i.e., the stacking direction of the packing sheets), it is bent towards the side where the top wall 22 is located to form a folded edge portion 23. Thus, the side wall 28, the top wall 22, and the folded edge portion 23 jointly enclose a water leakage prevention space 210 that prevents water from entering its interior.

[0083] As Figure 2 shown, a bent structure 27 that is concave (protruding towards the side where the top wall 22 is located) is also provided on the side wall 28. When the fastener 20 is buckled at the connection of the packing modules 1a and 1b, the bent structure 27 can be engaged with the groove between the packing sheets B and the packing sheet A on the packing modules 1a and 1b, so as to play a role in guiding the water flowing in the vertical direction and prevent water from entering the gap between the packing modules 1a and 1b. In addition, the bent structure 27 also improves the strength of the fastener 20.

[0084] As Figure 4 shown, the height of the side wall 21 is adapted to the height of the packing modules 1a and 1b, so as to prevent water leakage from the gap between the packing modules 1a and 1b at approximately the entire height of the packing modules 1a and 1b.

[0085] The side wall 21 can be formed as a single integral component or can be formed by connecting multiple parts. As Figure 5 shown, the side wall 21 of the fastener 20 includes a side wall body 211 and an extension section 29 located below the side wall body 211 and fixedly connected to the side wall body 211. The extension section 29 can be connected to the body of the fastener 20 by means such as bonding and welding. The above-mentioned split composition method can reduce the production difficulty and manufacturing cost.

[0086] From Figure 1 this view, at the right edge in the width direction of the packing modules 1a and 1b, the sealing connection portion D protrudes away from the packing modules 1a and 1b to form a plurality of vertically extending protruding edges.

[0087] Regarding the width of the fastener 20, as a preferred embodiment, the width of the fastener 20 is adapted to be buckled at the connection of the packing modules 1a and 1b. Specifically, at least the sealing connection portions D (i.e., the protruding edges of a certain structure) of two packing units U that are close to each other in the packing modules 1a and 1b are both located within the water leakage prevention space 210 of the fastener 20. Thus, the sealing connection portion D and the folded edge portion 23 of the fastener 20 overlap each other in the width direction of the packing modules 1a and 1b to prevent water from splashing or slipping into the interior of the water leakage prevention space 210, and further, the connection gap on the right side in the width direction of the packing modules 1a and 1b is closed by the side wall 21 of the fastener 20.

[0088]

Fastener 20’

[0089] To adapt to the changes in the structure of the connection between the packing modules 1a and 1b, the present utility model also provides a deformed structure of the fastener 20, namely, the fastener 20'.

[0090] As Figure 7 shown, on the left side in the width direction of the packing modules 1a and 1b, the packing piece B at the back end of the packing module 1a protrudes towards the packing module 1b to form a second protrusion C2, and the second protrusion C2 extends along the longitudinal direction; while the packing piece A at the front end of the packing module 1b protrudes towards the packing module 1a to form a first protrusion C1, and the first protrusion C1 corresponds to the second protrusion C2. When the packing modules 1a and 1b are connected, the top ends of the first protrusion C1 and the second protrusion C2 abut against each other to form a protrusion sealing part C.

[0091] As Figure 7 shown, on the left side of the protrusion sealing part C, a plurality of vertically extending protruding edges formed by the combination of the packing piece B and the packing piece A are formed. The above-mentioned protruding edges are located in the water leakage prevention space 210.

[0092] The top edges on the left side in the width direction of the packing modules 1a and 1b, the packing piece A and the packing piece B in the same group of packing units are connected together to form an upper edge sealing part 15.

[0093] As Figure 8 shown, in order to waterproof the above-mentioned left side structure of the packing modules 1a and 1b, in the fastener 20', the fastening part 25 includes two spaced convex strips 251, and the two spaced convex strips 251 can be placed into the first upper end opening 11 between two adjacent upper edge sealing parts 15 and engage with the protrusion sealing part C to realize the connection of the fastener 20' with the packing modules 1a and 1b.

[0094] In the fastener 20', a lapping groove 26 is also formed between two adjacent groups of fastening parts 25, and the width of the lapping groove 26 is adapted to the above-mentioned upper edge sealing part 15 so as to be connected with each other during installation.

[0095] As Figure 9 shown, the above-mentioned fastener 20' and the fastener 20 can be used in combination, that is, the fastener 20 is located at one side connection in the width direction of the packing modules 1a and 1b, while the fastener 20' is located at the other side connection in the width direction of the packing modules 1a and 1b.

[0096] It should be noted that Figure 1 the protruding edge on the right side in the width direction of the packing module 1 forms a sealing connection part D, and Figure 7The protruding edge on the left side of the middle packing module 1 in the width direction is formed as an edge structure formed by the combination of packing sheet B and packing sheet A located on the left side of the protruding sealing part C. However, it is not limited to this. The above-mentioned protruding edge can also be formed into other structures, such as an ear-shaped structure, etc., as long as it can form a hole through the rods 31 and 31'. The above-mentioned hole is preferably a closed through hole to facilitate the tightening assembly 30 or 30' to tighten the packing sheet without slipping off.

[0097]

Tightening Assembly 30

[0098] At the construction site, when the packing module 1 is about to be installed inside the cooling tower, in order to achieve the quick connection between the packing modules 1 and speed up the construction progress. The inventor of the present utility model also designs a tightening assembly 30 that can quickly realize the connection between the above-mentioned packing modules 1.

[0099] Figure 10 The structural diagram of the tightening assembly 30 according to an embodiment of the present utility model is shown; Figure 11 For Figure 10 The cross-sectional view of the shown tightening assembly 30; Figure 12 The schematic diagram of the application of the tightening assembly 30 of the present utility model at the connection part of the packing module. <H

[0100] As Figures 10 to 12 Shown, the tightening assembly 30 includes a rod 31. One end of the 31 protrudes outward in the radial direction to form a fixing part 36, and a first tightening surface 37 is formed between the fixing part 36 and the rod 31.

[0101] An axially extending ratchet part 32 is provided on the outer contour of the rod 31. The ratchet part 32 is formed by a plurality of ratchets arranged in sequence along the axial direction of the rod 31.

[0102] The tightening assembly 30 further includes a tightening cap 33 installed on the rod 30. The tightening cap 33 has a middle hole 43, and a ratchet pawl part 34 capable of cooperating with the above-mentioned ratchet part 32 is provided in the middle hole 43. When connecting the tightening cap 33 and the rod 30, the end 42 of the rod 30 is passed through the middle hole 43 of the above-mentioned tightening cap 33, and the ratchet pawl part 34 is engaged with the ratchet part 32. Under the action of the ratchet pawl part 34 and the ratchet part 32, the tightening cap 33 can only move in the direction close to the fixing part 36 and cannot retreat in the direction away from the fixing part 36.

[0103] Precisely based on this, as Figure 12 Shown, a through hole part D3 is provided on the sealing connection part D of the packing modules 1a and 1b. The end 42 of the rod 30 is passed through the through hole part D3 of the sealing connection part D of at least two packing units U at the connection part of the packing modules 1a and 1b, and the tightening cap 33 is installed at the ratchet part 32 of the rod 31, so as to tighten the above-mentioned at least two packing units U together.

[0104] Further, in order to achieve the detachable connection between the fastening cap 33 and the rod 31, the ratchet pawl portion 34 and the ratchet tooth portion 32 have a separated state when the connecting portion 39 is deformed and an engaged state when the connecting portion 39 is reset.

[0105] In some embodiments, a connecting portion 39 having a necking structure is provided at the connection between the ratchet pawl portion 34 and the fastening cap 33. By providing the necking structure, the connecting portion 39 is easily deformed and reset.

[0106] In some embodiments, an operating portion 35 is provided at the free end of the ratchet pawl portion 34, and the position of the operating portion 35 is adapted to deform the connecting portion 39 when a force is applied. For example, the free end of the ratchet pawl portion 34 extends away from the fastening cap 33 to form the operating portion 35. Another example is that the free end of the ratchet pawl portion 34 extends away from the fastening cap 33 and deflects radially outward of the fastening cap 33 to form the operating portion 35.

[0107] By pressing the operating portion 35, the connecting portion 39 is deformed, so that the ratchet pawl portion 34 is disengaged from the ratchet tooth portion 32, so as to separate the fixing cap 33 from the rod 31. Through the above structural arrangement, the fastening assembly can be disassembled and reused.

[0108] In some embodiments, a second fastening surface 38 is formed on the side of the fastening cap 33 facing the fixing portion 36. The second fastening surface 38 can be, for example, substantially planar to abut against the surface of the sealing connection portion D to provide a clamping force without damaging the sealing connection portion D.

[0109] When the packing modules 1a and 1b are assembled on-site, the fastening assembly 30 can achieve the quick connection of the packing modules 1a and 1b, improve the working efficiency, and the connection is firm.

[0110]

Fastening Assembly 30’

[0111] As Figure 13 shown, the fastening assembly 30' is a deformed structure of the fastening assembly 30. In the fastening assembly 30', the rod 31' is not provided with a fixing portion 36, but has a ratchet tooth portion 32 and a ratchet tooth portion 32'. The rod 31' has a first end and a second end arranged oppositely. The ratchet tooth portion 32 allows the fastening cap 33 to move unidirectionally from the first end to the second end (from left to right), but has no effect on the fastening cap 33'; while the ratchet tooth portion 32' allows the fastening cap 33' to move unidirectionally from the second end to the first end (from right to left), but has no effect on the fastening cap 33.

[0112] In some embodiments, as Figure 13As shown, the ratchet portion 32 is located on one side (the upper side in the figure) of the outer contour of the rod 31', while the ratchet portion 32' is located on the other side (the lower side in the figure) of the outer contour of the rod 31'.

[0113] As Figure 14 shown, a plurality of through-hole portions D3 arranged vertically are provided at the sealing connection portion D on the right side in the width direction of the packing modules 1a and 1b, so as to facilitate the installation of the above-mentioned fastening assemblies 30 and 30', and connect two adjacent packing modules 1a and 1b together.

[0114] In addition, as Figure 15 shown, two groups of through-hole portions D3 are provided at the sealing connection portion D on the right side in the width direction of the packing modules 1a and 1b, so that not only the connection between the packing modules can be realized, but also the connection between the packing units U inside the packing modules 1a / 1b can be realized by alternately passing through the fastening assemblies 30 / 30' in the vertical direction. That is, when assembling the packing modules, the fastening assembly 30 or the fastening assembly 30' can also be used for temporary fixation to facilitate the bonding between the packing units U.

[0115] It should be noted that the above-mentioned through-hole portions D3 can also be formed at the left edge in the width direction of the packing modules 1a and 1b.

[0116]

Leakage prevention system 100

[0117] The leakage prevention system 100, as a combined system, is used for waterproofing the connection gaps between adjacent packing modules in the stacking direction. It can include the fasteners 20 and / or 20' as described above, and the fastening assemblies 30 and / or 30' located at the edges in the width direction of the packing modules 1a and 1b. Through the above-mentioned fastening assemblies 30 and / or 30', the tension connection between adjacent packing modules 1a and 1b can be realized, and then the fasteners 20 and / or 20' are buckled on one edge in the width direction of the packing modules 1a and 1b to waterproof the connection gaps between the packing modules 1a and 1b, thereby greatly improving the construction speed of assembling the packing modules into a packing layer during on-site construction, reducing the impact of the adhesive on the environment, and the health harm to construction workers.

[0118] The leakage prevention system 100 can further include a sealing strip 40, which is used in combination with the above-mentioned fastener 20 or fastener 20' to completely seal the connection gaps on the upper side and both sides in the width direction between the packing modules 1a and 1b, with good waterproof performance, stable and reliable, and long service life.

[0119] By setting up the anti-leakage system 100, a flow path identical to the first and second flow paths in the packing modules 1a and 1b can be formed in the connection gap between the packing modules 1a and 1b adjacent in the stacking direction, thereby making rational use of the above connection gap, increasing the heat exchange area, and reducing the wind resistance.

[0120]

Cooling Tower 1000

[0121] The bottom layer of the cooling tower 1000 is the air intake layer 101, and a plurality of air dampers 102 are arranged around the air intake layer 101. Above the air intake layer 101, a packing layer 103 is provided, and the packing layer 103 is composed of a plurality of packing modules 1 arranged in a matrix in the horizontal plane. Above the packing layer 103, a spraying section 104 is provided, and the spraying section 104 sprays the hot water to be treated onto each packing module 1 of the packing layer 103. In the area between the spraying section 104 and the packing layer 103, a partition 105 extending along the stacking direction of the packing modules 1 is disposed substantially vertically, and a plurality of spaced spaces 105a and 105b are defined by the partition 105 and the top surface of the packing module 1. Among them, the spaced space 105a serves as a spraying space for spraying hot water, and the spaced space 105b serves as an air guiding space for sucking gas from bottom to top. The spraying space 105a and the air guiding space 105b are alternately arranged in the direction perpendicular to the stacking direction of the matrix formed by the packing modules 1, and each partition 105 is disposed at the intersection position of the first upper end opening 11 and the second upper end opening 12 of the packing module 1, thereby separating the first flow path R1 and the second flow path R2 communicating with the first upper end opening 11 and the second upper end opening 12.

[0122] Above the spraying section 104 is the exhaust layer 106, and above the exhaust layer 106 is the air outlet 108 provided with a fan 107. By sucking air upward through the fan 107, cold air enters the air intake layer 101 from the air dampers 102 at the lower layer of the cooling tower 1000, passes upward through each packing module 1 of the packing layer 103, respectively passes through the spraying space 105a and the air guiding space 105b, is further mixed in the exhaust layer 106, and is discharged upward through the air outlet 108.

[0123] On the other hand, the hot water to be treated sprayed from the spraying section 104 onto each packing module 1 of the packing layer 103 is cooled by each packing module 1, falls to the bottom surface of the air intake layer 101, and the cooled water is recovered through the collecting device for recycling in the factory.

[0124] Operating State 1:

[0125] As described above, the cooling tower 1000 is set to the winter working state. At this time, the hot water to be treated sprayed from the spraying part 104 is restricted within the spraying space 105a and enters one of the two flow paths of the packing module 1. In the present embodiment, since the partition plate 105 is disposed at the junction position of the first upper end opening 11 and the second upper end opening 12 with respect to the packing module 1, the first and second flow paths R1 and R2 adjacent to each other between two adjacent packing modules 1 both form water flow paths, while the outer flow paths R1 and R2 are adjacent to the second and first flow paths adjacent to both sides respectively and are both formed as air flow paths.

[0126] The dry and hot air flowing through the air flow path and the wet and hot air flowing through the water flow path are mixed in the exhaust layer 106. Due to the small amount of wet and hot air, unsaturated hot air is formed after mixing with the dry and hot air. After being discharged to the atmosphere through the fan 107 and the air outlet 108, the unsaturated hot air is gradually cooled and the amount of water precipitated is small, greatly reducing the amount of fog formed.

[0127] In the present embodiment, by switching the spraying part 104, the spraying space 105a and the air-introducing space 105b can be flexibly switched, that is, stopping spraying hot water into the spraying space 105a and spraying hot water into the air-introducing space 105b. In this way, the functions of the spraying space 105a and the air-introducing space 105b can be swapped. On the one hand, the normal operation of the cooling tower 1000 can be ensured, and on the other hand, the flow path R1 or R2 of the packing module 1 communicated with the air-introducing space 105b can be effectively cleaned and maintained. Thus, when the cleaning and maintenance work of the cooling tower 1000 is carried out, the normal operation of the cooling tower 1000 is not affected.

[0128] Working state two:

[0129] When in the summer working state, by adjusting the spraying part 104, hot water spraying can be carried out on the air-introducing space 105b and the spraying space 105a in the same way, which can ensure that the heat exchange efficiency of the cooling tower 1000 is improved as much as possible without the problem of fogging in summer.

[0130] The fasteners 20, 20' of the present utility model are fastened to the connection part of adjacent packing modules in the stacking direction to prevent the water sprayed from the spraying space 105a at the connection part from leaking into the air-introducing space through the above-mentioned connection gap. The fasteners 20, 20' of the present utility model are connected to the connection part of the above-mentioned packing module by a fastening method, which is quick and convenient to install, greatly improves the construction progress compared with methods such as bonding and filling sealing materials, and has good waterproof performance, firmness and durability.

[0131] The above has described in detail the fasteners, fastening components, anti-leakage system and cooling tower of the preferred embodiments of the present utility model. However, those skilled in the art can make various modifications, changes, combinations, etc. on this basis, and these modifications, changes and combinations all fall within the protection scope of the claims of this application.

Claims

1. A reusable fastening assembly, comprising: A rod, on the outer contour of which there is an axially extending ratchet portion formed by a plurality of ratchets arranged in sequence along the axial direction of the rod; A fastening cap capable of being connected to the rod, the fastening cap having a pawl portion capable of cooperating with the ratchet portion; there is a connecting portion between the pawl portion and the fastening cap; the pawl portion and the ratchet portion have a separated state when the connecting portion is deformed, and an engaged state when the connecting portion is reset; In the engaged state, the fastening cap is limited to move in only one direction; In the separated state, the fastening cap can move freely in both directions along the rod.

2. The reusable fastening assembly according to claim 1, wherein The fastening cap has a central hole, and when the rod passes through the central hole, the pawl portion is connected to the ratchet portion.

3. The reusable fastening assembly according to claim 1, wherein The connecting portion has a necking structure with a locally reduced diameter.

4. The reusable fastening assembly according to claim 1, wherein The free end of the pawl portion forms an operating portion, and the position of the operating portion is adapted to deform the connecting portion when a force is applied.

5. The reusable fastening assembly according to claim 1, wherein The free end of the pawl portion extends away from the fastening cap to form an operating portion.

6. The reusable fastening assembly according to claim 1, wherein The free end of the pawl portion extends away from the fastening cap and deflects radially outward of the fastening cap to form an operating portion.

7. The reusable fastening assembly according to claim 1, wherein The rod has a first end and a second end arranged oppositely, the ratchet portion includes a first ratchet portion and a second ratchet portion provided on the outer contour of the rod; the fastening cap includes a first fastening cap and a second fastening cap; the pawl portion of the first fastening cap is connected to the first ratchet portion and is limited to move in only one direction from the first end to the second end direction in the engaged state; the pawl portion of the second fastening cap is connected to the second ratchet portion and is limited to move in only one direction from the second end to the first end direction in the engaged state.

8. The reusable fastening assembly according to claim 1, wherein, The rod has a first end and a second end arranged oppositely, at the first end there is an end portion with a reduced diameter towards the top; at the second end there is a fixing portion protruding radially outward.

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