Plug for air cooler and sealing structure

Abstract

The utility model discloses a screwed plug and a sealing structure for an air cooler, which comprise a tightening part, a thread part is connected on the tightening part, one end of the thread part far away from the tightening part is connected with a polished rod part, and the polished rod part is connected with a sealing separation blade which is used for preventing the thread part from being in direct contact with water in a tube bundle. The screwed plug is connected with the sealing blocking piece, water in the tube bundle is blocked in the tube bundle through the sealing blocking piece, the threaded part on the screwed plug is prevented from making direct contact with the water in the tube bundle, the threaded part is relatively not prone to rusting, and the technical problems that the threaded part of an existing screwed plug makes direct contact with the water in the tube bundle, and the threaded part is prone to rusting are solved. Wherein the end face and the side face of the sealing blocking piece and the first connecting hole are arranged in a sealed mode respectively, sealing of the sealing blocking piece and the first connecting hole is achieved in the two vertical directions, and the possibility that water in the tube bundle crosses over the sealing blocking piece is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of air cooler sealing, and in particular to a threaded plug and sealing structure for an air cooler. Background Technology

[0002] Air cooler plugs are essential tools in air cooler maintenance and repair, primarily used for leak detection and sealing of the tube bundle. Their functions include: Leak detection: During leak detection, the sealing plug is used to temporarily seal the pipe openings so that leak detectors can be used to check for leaks. Leak sealing: During leak sealing, the sealing plug can be used to seal any leaks at both ends of the tube bundle. Existing air cooler sealing plugs are typically made of stainless steel (such as 304 or 316 stainless steel) or nickel-plated brass to ensure corrosion resistance and sealing performance.

[0003] Existing air cooler plug structures, such as Figure 1 As shown, the plug includes a tightening part, a sealing ring, and a threaded part arranged sequentially. The tightening part and the threaded part are integrally fixedly connected, the sealing ring is sleeved on the threaded part, and the threaded part is threadedly connected to the leakage position at the end of the tube bundle. However, the threaded part of the plug extends into the leakage position at the end of the tube bundle for threaded connection, and the threaded part is in direct contact with the water inside the tube bundle, making the threaded part prone to corrosion and affecting the service life of the air cooler plug. Utility Model Content

[0004] To address the shortcomings in the aforementioned background technology, this utility model proposes a plug and sealing structure for air coolers, which solves the technical problem that the threaded part of the existing plug is in direct contact with the water inside the tube bundle, and the threaded part is prone to corrosion.

[0005] The technical solution of this utility model is implemented as follows: a plug for an air cooler includes a tightening part, a threaded part connected to the tightening part, a smooth rod part connected to the end of the threaded part away from the tightening part, and a sealing baffle connected to the smooth rod part to prevent the threaded part from directly contacting the water in the tube bundle.

[0006] Preferably, the tightening part, the threaded part, and the smooth rod part are integrally connected.

[0007] Preferably, the sealing baffle is fitted onto the smooth rod portion.

[0008] Preferably, the sealing baffle is an elastically deformable sealing baffle.

[0009] Preferably, the tightening part includes a plurality of tightening and fixing plates, which are evenly arranged on the top surface of the threaded part.

[0010] A sealing structure for an air cooler includes a plug for the air cooler, a first connecting hole, and a second connecting hole. The first connecting hole and the second connecting hole are arranged sequentially from the end of the tube bundle to the inside. The diameter of the first connecting hole is larger than the diameter of the second connecting hole. A stepped surface is formed between the first connecting hole and the second connecting hole. The diameter of the sealing baffle is larger than the diameter of the second connecting hole. The sealing baffle is in a stop-fitting engagement with the stepped surface. An internal thread is provided in the first connecting hole, and the internal thread is threadedly connected to the threaded portion.

[0011] Preferably, the diameter of the optical rod portion is larger than the diameter of the second connecting hole.

[0012] Preferably, the diameter of the sealing baffle is the same as the diameter of the first connecting hole.

[0013] Preferably, the step surface is provided with a protrusion, and the sealing baffle is provided with a groove, the protrusion and the groove being in concave-convex fit.

[0014] Preferably, both the protrusion and the groove are arc-shaped.

[0015] The beneficial effects of this utility model are:

[0016] 1. This utility model has a sealing baffle connected to the plug, which blocks the water in the tube bundle and prevents the threaded part of the plug from directly contacting the water in the tube bundle. The threaded part is therefore less prone to corrosion, thus solving the technical problem that the threaded part of the existing plug is in direct contact with the water in the tube bundle and is prone to corrosion.

[0017] 2. The sealing baffle of this utility model is chosen to be an elastically deformable sealing baffle because after the threaded part is connected to the tube bundle by the thread, the sealing baffle is blocked and squeezed inside the tube bundle. The sealing effect between the elastically deformable sealing baffle and the tube bundle is better after being blocked and squeezed, which prevents water in the tube bundle from passing over the side of the sealing baffle and seeping into the thread of the first connecting hole. The end face of the sealing baffle is provided with a protrusion, which is made of elastically deformable rubber material. When the smooth part and the stepped surface compress the sealing baffle, the protrusion is also compressed and deformed, so that the protrusion and the groove fit more tightly, which prevents water in the tube bundle from passing over the end face of the sealing baffle and seeping in along the stepped surface. The end face and side of the sealing baffle are respectively sealed to the first connecting hole, and the sealing baffle and the first connecting hole are sealed from two vertical directions, which greatly reduces the possibility of water in the tube bundle passing over the sealing baffle. Attached Figure Description

[0018] To more clearly illustrate the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of an existing plug.

[0020] Figure 2 This is a schematic diagram of the plug of this utility model.

[0021] Figure 3 This is a schematic diagram of the end of the tube bundle of this utility model.

[0022] Figure 4 This is a schematic diagram of the sealing structure for the air cooler of this utility model.

[0023] In the figure, 1 is the tightening part, 2 is the threaded part, 3 is the smooth rod part, 4 is the sealing baffle, 5 is the first connecting hole, 6 is the second connecting hole, 7 is the stepped surface, 8 is the protrusion, 9 is the groove, 10 is the tube bundle, 11 is the internal thread, and 12 is the tightening and fixing plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: A threaded plug for an air cooler, such as Figure 2 and Figure 4 As shown, the device includes a tightening part 1, a threaded part 2 connected to the tightening part 1, and a smooth rod part 3 connected to the end of the threaded part 2 away from the tightening part 1. A sealing baffle 4 is connected to the smooth rod part 3 to prevent the threaded part 2 from directly contacting the water inside the tube bundle 10. The sealing baffle 4 is connected to the plug to block the water inside the tube bundle 10, preventing direct contact between the threaded part 2 on the plug and the water inside the tube bundle 10. This makes the threaded part 2 less prone to corrosion, solving the technical problem of existing plugs where the threaded part directly contacts the water inside the tube bundle, leading to easy corrosion of the threaded part.

[0026] Example 2, based on Example 1, a type of plug for an air cooler, such as... Figure 2 and Figure 4As shown, the tightening part 1, the threaded part 2, and the smooth rod part 3 are integrally connected. After the tightening part 1, the threaded part 2, and the smooth rod part 3 are integrally connected, the connection strength between the tightening part 1, the threaded part 2, and the smooth rod part 3 is greatly improved.

[0027] Example 3, based on Example 2, a type of plug for an air cooler, such as... Figure 2 and Figure 4 As shown, the sealing baffle 4 is sleeved on the smooth rod portion 3. After the sealing baffle 4 is sleeved on the smooth rod portion 3, the sealing baffle 4 can be easily removed and replaced on the smooth rod portion 3, thus improving the convenience of replacing the sealing baffle 4 on the smooth rod portion 3.

[0028] When the removal and replacement of the sealing baffle 4 on the bare rod portion 3 is not considered, the sealing baffle 4 can be bonded to the bare rod portion 3 with sealant, reducing the possibility of the sealing baffle 4 detaching from the bare rod portion 3. Preferably, the sealing baffle 4 is detachably fitted onto the bare rod portion 3.

[0029] Example 4, based on Example 3, a type of wire plug for an air cooler, such as... Figure 2 and Figure 4 As shown, the sealing baffle 4 is an elastically deformable sealing baffle. The sealing baffle 4 is chosen to be an elastically deformable sealing baffle because after the threaded part 2 is threadedly connected to the tube bundle 10, the sealing baffle 4 is blocked and squeezed inside the tube bundle 10. The sealing effect between the elastically deformable sealing baffle 4 and the tube bundle 10 is better after being blocked and squeezed, which prevents water in the tube bundle 10 from passing over the side of the sealing baffle 4 and seeping into the internal thread 11 on the first connecting hole 5.

[0030] Example 5, based on Example 4, a type of plug for an air cooler, such as... Figure 2 and Figure 4 As shown, the tightening part 1 includes a plurality of tightening and fixing plates 12, which are evenly arranged on the top surface of the threaded part 2. The tightening and fixing plates 12 are provided to facilitate the rotation and tightening of the plug, thereby improving the convenience of plug installation and removal. Preferably, three tightening and fixing plates 12 are provided on the top surface of the threaded part 2, and the three tightening and fixing plates 12 are spaced apart along the top surface of the tightening body 11, with an included angle of 120° between two adjacent tightening and fixing plates 12.

[0031] In Example 5, the tightening fixing plate 12, the threaded part 2 and the smooth rod part 3 are integrally formed. The tightening fixing plate 12 is located on the top surface of the threaded part 2 and the smooth rod part 3 is located on the bottom surface of the threaded part 2. Then, a sealing baffle 4 is sleeved on the outside of the smooth rod part 3 to form the plug for the air cooler of this application.

[0032] Example 6, based on any one of Examples 1 to 5, provides a sealing structure for an air cooler, such as... Figure 2 , Figure 3 and Figure 4 As shown, the air cooler includes the aforementioned plug, a first connecting hole 5, and a second connecting hole 6. The first connecting hole 5 and the second connecting hole 6 are sequentially arranged from the end of the tube bundle 10 to its interior. The diameter of the first connecting hole 5 is larger than the diameter of the second connecting hole 6. A stepped surface 7 is formed between the first connecting hole 5 and the second connecting hole 6. The diameter of the sealing baffle 4 is larger than the diameter of the second connecting hole 6. The sealing baffle 4 engages with the stepped surface 7. The first connecting hole 5 has an internal thread 11, which is threadedly connected to the threaded portion 2. The stepped surface 7 is designed to create a stop with the sealing baffle 4, allowing the sealing baffle 4 to separate the water inside the tube bundle 10 from the threaded portion 2. This prevents the water inside the tube bundle 10 from corroding the threaded portion 2 on the plug. Since the threaded portion 2 does not come into contact with the water inside the tube bundle 10, it is less prone to corrosion, thus improving the service life of the air cooler plug.

[0033] Example 7, based on Example 6, provides a sealing structure for an air cooler, such as... Figure 4 As shown, the diameter of the smooth rod portion 3 is larger than the diameter of the second connecting hole 6. The diameter of the smooth rod portion 3 is larger than the diameter of the second connecting hole 6 to ensure that the smooth rod portion 3 and the stepped surface 7 form a compression of the sealing baffle 4, thus preventing the smooth rod portion 3 from squeezing the sealing baffle 4 into the second connecting hole 6.

[0034] Example 8, based on Example 7, provides a sealing structure for an air cooler, such as... Figure 4 As shown, the diameter of the sealing baffle 4 is the same as the diameter of the first connecting hole 5. This arrangement ensures that when the smooth rod portion 3 and the stepped surface 7 compress the sealing baffle 4, the side of the sealing baffle 4 is in an interference fit with the first connecting hole 5, improving the sealing effect between the sealing baffle 4 and the first connecting hole 5. This prevents water inside the tube bundle 10 from overflowing the side of the sealing baffle 4 and seeping into the internal thread 11.

[0035] Example 9, based on Example 7 or 8, provides a sealing structure for an air cooler, such as... Figure 2 , Figure 3 and Figure 4As shown, the stepped surface 7 has a protrusion 8, and the sealing baffle 4 has a groove 9, with the protrusion 8 and groove 9 engaging in a convex-concave fit. This convex-concave fit between the protrusion 8 and groove 9 ensures that the contact surface between the sealing baffle 4 and the stepped surface 7 has a protrusion 8, greatly reducing the possibility of water seepage into the tube bundle 10. The protrusion 8 is made of elastically deformable rubber. When the smooth rod portion 3 and the stepped surface 7 compress the sealing baffle 4, the protrusion 8 is also deformed, making the convex-concave fit between the protrusion 8 and groove 9 even tighter, preventing water in the tube bundle 10 from overflowing the end face of the sealing baffle 4 and seeping into the stepped surface 7. The end face and side face of the sealing baffle 4 are respectively sealed to the first connecting hole 5, achieving a seal between the sealing baffle 4 and the first connecting hole 5 from two vertical directions, greatly reducing the possibility of water in the tube bundle 10 overflowing the sealing baffle 4.

[0036] Example 10, based on Example 9, provides a sealing structure for an air cooler, such as... Figure 2 , Figure 3 and Figure 4 As shown, both the protrusion 8 and the groove 9 are arc-shaped. The arc-shaped protrusion 8 and groove 9 facilitate a proper fit between them, and when the smooth rod portion 3 and the stepped surface 7 compress the sealing baffle 4, the arc-shaped protrusion 8 is less likely to be damaged by compression, thus exhibiting stronger compressive strength. The arc-shaped protrusion 8 is bonded to the stepped surface 7 with sealant.

[0037] In Example 10, the tightening fixing plate 12, the threaded part 2 and the smooth rod part 3 are integrally formed. The tightening fixing plate 12 is located on the top surface of the threaded part 2 and the smooth rod part 3 is located on the bottom surface of the threaded part 2. Then, a sealing baffle 4 is sleeved on the outside of the smooth rod part 3 to form the plug for the air cooler of this application.

[0038] Then, a first connecting hole 5 and a second connecting hole 6 are drilled at the end of the tube bundle 10. The first connecting hole 5 and the second connecting hole 6 form a stepped hole. The step surface 7 is between the first connecting hole 5 and the second connecting hole 6. The protrusion 8 is bonded to the step surface 7. Then, a groove 9 is dug out on the sealing baffle 4. Then, the air cooler is screwed into the first connecting hole 5 with a plug. The threaded part 2 is threadedly connected to the internal thread 11 in the first connecting hole 5. The fixing plate 12 is tightened by continuous tightening, so that the protrusion 8 and the groove 9 fit together. The fixing plate 12 is tightened by continued tightening, so that the sealing baffle 4 is squeezed and set between the smooth rod part 3 and the step surface 7. The protrusion 8 is also squeezed and deformed in the groove 9, so as to achieve the sealing separation of the water in the tube bundle 10 by the sealing baffle 4.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A plug for an air cooler, comprising a tightening part (1) and a threaded part (2) connected to the tightening part (1), characterized in that, The threaded part (2) is connected to a smooth rod part (3) at the end away from the tightening part (1), and a sealing baffle (4) is connected to the smooth rod part (3) to prevent the threaded part (2) from directly contacting the water in the tube bundle (10).

2. The air cooler plug according to claim 1, characterized in that, The tightening part (1), the threaded part (2) and the smooth rod part (3) are integrally connected.

3. The air cooler plug according to claim 2, characterized in that, The sealing baffle (4) is fitted onto the bare rod part (3).

4. The air cooler plug according to claim 3, characterized in that, The sealing baffle (4) is an elastically deformable sealing baffle.

5. The air cooler plug according to claim 4, characterized in that, The tightening part (1) includes a plurality of tightening and fixing plates (12), which are evenly arranged on the top surface of the threaded part (2).

6. A sealing structure for an air cooler, characterized in that, Includes the air cooler plug as described in any one of claims 1 to 5, a first connecting hole (5) and a second connecting hole (6), wherein the first connecting hole (5) and the second connecting hole (6) are arranged sequentially from the end of the tube bundle (10) to the inside, the diameter of the first connecting hole (5) is larger than the diameter of the second connecting hole (6), a stepped surface (7) is formed between the first connecting hole (5) and the second connecting hole (6), the diameter of the sealing baffle (4) is larger than the diameter of the second connecting hole (6), the sealing baffle (4) is in a stop fit with the stepped surface (7), and the first connecting hole (5) is provided with an internal thread (11), which is threadedly connected to the threaded part (2).

7. The sealing structure for an air cooler according to claim 6, characterized in that, The diameter of the light rod part (3) is larger than the diameter of the second connecting hole (6).

8. The sealing structure for an air cooler according to claim 7, characterized in that, The diameter of the sealing baffle (4) is the same as the diameter of the first connecting hole (5).

9. The sealing structure for an air cooler according to claim 7 or 8, characterized in that, The stepped surface (7) is provided with a protrusion (8), and the sealing baffle (4) is provided with a groove (9). The protrusion (8) and the groove (9) are in a concave-convex fit.

10. The sealing structure for an air cooler according to claim 9, characterized in that, Both the protrusion (8) and the groove (9) are arc-shaped.

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