Coil drainage device

Abstract

The utility model provides a coil pipe drainage device. A water inlet pipe drainage valve of a surface cooling coil pipe is connected with the drainage device; the drainage device comprises a metal quick connector, a nylon pipe and a metal quick plug which are connected in sequence; the metal quick connector is in threaded connection with a water inlet pipe drain valve of the surface cooling coil pipe. The nylon pipe clamping device has the advantages that the stability of the nylon pipe clamping device is guaranteed when a nylon pipe is clamped, and meanwhile the nylon pipe cannot be damaged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to central air conditioning unit equipment technical field, especially, it is a kind of coil drainage device. BACKGROUND

[0002] Air conditioning terminal unit plays a vital role in modern buildings, especially in adjusting indoor environment and improving energy efficiency. Among them, the performance of the cooling coil as a key heat exchange component directly affects the cooling and heating capacity of the system. When the cooling coil is subjected to water pressure test and depressurized or not used for a long time, the water at the bottom of the cooling coil will freeze and expand when the coil is placed below the freezing temperature, causing the copper pipe to crack. Therefore, if the cooling coil is not used for a long time and the coil is placed below the freezing temperature, water should be drained from the lowest position of the water system, and compressed air should be used to prevent freezing.

[0003] The water inlet pipe drain valve of the cooling coil on the market is usually arranged at the bottom of the water inlet pipe to drain water and prevent freezing. However, when encountering units with height restrictions / special structures, the water inlet pipe of the cooling coil needs to be raised. At this time, the water inlet pipe drain valve of the cooling coil is usually arranged at the bottom of the water inlet pipe inside the unit, and the drain valve is closed inside the unit. Although it is inconvenient to drain and maintain inside the unit, it can still drain water. However, when the unit uses four-tube cooling coil, hot water coil, steam coil and other obstacles behind, due to the obstacles behind, the water inlet pipe drain valve of the cooling coil in front cannot drain water, and traditional maintenance methods often cannot achieve effective maintenance and repair. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims to provide a coil drainage device to solve at least one technical problem in the background art.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] A coil drainage device, the water inlet pipe drain valve of the cooling coil is connected with the drainage device;

[0007] The drainage device comprises a metal quick connector, a nylon pipe and a metal quick plug, which are connected in sequence.

[0008] The metal quick connector is threadedly connected with the water inlet pipe drain valve of the cooling coil.

[0009] Further, the metal quick connector is tubular, and the metal quick plug is tubular.

[0010] Further, one end of the metal quick connector is provided with a thread, and the other end is internally provided with a first integrated snap spring; the metal quick connector is internally provided with a first mounting ring; and the first integrated snap spring is mounted on the metal quick connector through the mounting ring.

[0011] Further, the metal quick connector is provided with a first flange, which is arranged at the end close to the thread.

[0012] Further, the metal quick connector is provided with a raw rubber belt at the connection position of the metal quick connector and the water inlet pipe drain valve of the surface cooling coil pipe, and the raw rubber belt is arranged at the thread of the metal quick connector.

[0013] Further, one end of the metal quick connector is provided with a thread, and the other end is internally provided with a first integrated snap spring; the metal quick connector is internally provided with a first mounting ring; and the first integrated snap spring is mounted on the metal quick connector through the mounting ring.

[0014] The first integrated snap spring or the second integrated snap spring comprises a snap spring body, a first clasp assembly, a second clasp assembly and an operating ring; the first clasp assembly and the operating ring are arranged at two ends of the snap spring respectively; and the first mounting ring is arranged between the first clasp assembly and the second clasp assembly.

[0015] Further, the snap spring body is provided with a plurality of arc-shaped plates arranged uniformly; and the plurality of arc-shaped plates are arranged on the operating ring in a circumferential direction.

[0016] The first clasp assembly comprises a plurality of first arc-shaped rings; and the plurality of first arc-shaped rings correspond to the structure of the snap spring body.

[0017] The second clasp assembly comprises a plurality of second arc-shaped rings; and the plurality of second arc-shaped rings correspond to the structure of the snap spring body.

[0018] Further, the metal quick connector is provided with a first flange, which is arranged at the end close to the thread.

[0019] Compared with the prior art, the surface cooling coil pipe drain device has the following advantages:

[0020] 1. The application has strong applicability. The water inlet pipe drain valve of the surface cooling coil pipe is arranged at the bottom of the water inlet pipe inside the unit. The nylon pipe can smoothly drain the front surface cooling coil pipe, and solves the problem that the surface cooling coil pipe cannot be drained when the water inlet pipe is lifted and there is an obstacle behind. Moreover, under the premise that the water inlet pipe is lifted, the new surface cooling coil pipe drainage mode is added as an option.

[0021] 2、 The application is easy to install and maintain, and the metal quick connector can be simply reversely wound with a rubber tape and directly screwed into the drain valve thread of the water inlet pipe of the cooling coil. The new coil drainage method of the application cooperates with the first or second integrated clamping spring, which ensures the stability when clamping the nylon pipe and does not damage the nylon pipe. After installation, the pipe body can rotate freely by 360 degrees, and is suitable for various coil structures.

[0022] 3、 The combination of the metal quick connector, the metal quick plug and the nylon pipe makes the drainage operation more convenient. In addition, the metal quick connector, the metal quick plug and the nylon pipe are quickly connected and fixed through the first or second integrated clamping spring. The user only needs to press the release ring to loosen the clamping spring structure, and can easily complete the drainage without complicated disassembly process.

[0023] 4、 Pressure-resistant, temperature-resistant and corrosion-resistant, the metal quick connector and the metal quick plug of the application are made of corrosion-resistant metal material: pressure-resistant 3.2MPa, temperature-resistant 120℃. The design withstands high pressure and is not easy to be released, ensuring the long-term stability and durability of the system. The nylon pipe is made of temperature-resistant, pressure-resistant and corrosion-resistant nylon material, which makes the drainage method of the application widely applicable to different types of units and various structures, fully meeting the increasingly diversified market demand. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, and are incorporated in and constitute a part of this application. The embodiments of these drawings illustrate the present application and, together with their description, serve to explain the application without imposing undue limitation thereto. In the drawings:

[0025] Figure 1 A schematic view of the installation of a coil drainage device according to an embodiment of the application;

[0026] Figure 2 A schematic view of the use of a coil drainage device according to an embodiment of the application;

[0027] Figure 3 A schematic view of a drainage device according to an embodiment of the application;

[0028] Figure 4 A schematic view of a metal quick connector according to an embodiment of the application;

[0029] Figure 5 A schematic view of a metal quick plug according to an embodiment of the application;

[0030] Figure 6 A schematic view of a first integrated clamping spring according to an embodiment of the application.

[0031] Reference signs:

[0032] 1, metal quick connector; 2, nylon pipe; 3, metal quick plug; 4, thread; 5, water inlet pipe drain valve of cooling coil; 6, first integrated spring; 7, first flange; 8, raw rubber belt; 9, plug; 10, second flange; 11, second integrated spring; 12, spring body; 13, first arc ring; 14, second arc ring; 15, operating ring; 16, first mounting ring. DETAILED DESCRIPTION

[0033] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0034] In the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0035] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0037] As shown in Figures 1 to 6 A coil drain device, the water inlet pipe drain valve 5 of the cooling coil is connected with the drain device; the drain device comprises a metal quick connector 1, a nylon pipe 2 and a metal quick plug 3, which are connected in sequence; the metal quick connector 1 is connected with the water inlet pipe drain valve 5 of the cooling coil by a thread 4.

[0038] The metal quick connector 1 is tubular, and the metal quick plug 3 is tubular. One end of the metal quick connector 1 is provided with a thread 4, and the other end is internally provided with a first integrated snap spring 6. The metal quick connector 1 is internally provided with a first mounting ring, and the first integrated snap spring 6 is mounted in the metal quick connector 1 through the first mounting ring.

[0039] The first integrated snap spring 6 or the second integrated snap spring 11 each includes a snap spring body 12, a first clasp assembly, a second clasp assembly, and an operating ring 15.

[0040] The first clasp assembly and the operating ring 15 are respectively arranged at two ends of the snap spring, and the first mounting ring 16 is arranged between the first clasp assembly and the second clasp assembly.

[0041] The snap spring body 12 is provided with a plurality of arc-shaped plates arranged uniformly. The plurality of arc-shaped plates are arranged on the operating ring 15 along a circumference. The material of the arc-shaped plates is a metal with elasticity, and the material of the arc-shaped plates is spring steel, such as 60Si2Mn.

[0042] The first clasp assembly includes a plurality of first arc-shaped rings 13 corresponding to the structure of the snap spring body 12. The second clasp assembly includes a plurality of second arc-shaped rings 14 corresponding to the structure of the snap spring body 12.

[0043] The inner diameter of the first mounting ring 16 is smaller than the outer diameter of the snap spring body 12 of the first integrated snap spring 6 in a static state.

[0044] In the use process, the nylon pipe 2 is inserted into the first integrated snap spring 6, at which time the snap spring body 12 expands outward, the snap spring body 12 clamps the nylon pipe 2, and when drainage is needed; the operating ring 15 is pressed inward at this time, at which time the second arc-shaped ring 14 abuts against the first mounting ring 16, at which time the snap spring body 12 expands outward, at which time the nylon pipe 2 is pulled out, facilitating installation.

[0045] The metal quick connector 1 is provided with a first flange 7 arranged at one end close to the thread 4.

[0046] The metal quick connector 1 is provided with a raw rubber belt 8 at the connection between the metal quick connector 1 and the water inlet pipe drainage valve 5 of the surface cooling coil pipe, and the raw rubber belt 8 is arranged at the thread 4 of the metal quick connector 1.

[0047] One end of the metal quick plug 3 is a plug head 9, and the other end is internally provided with a second integrated snap spring 11. The metal quick plug 3 is internally provided with a second mounting ring, and the second integrated snap spring 11 is mounted in the metal quick plug 3 through the second mounting ring.

[0048] The structure of the second integrated snap spring 11 is the same as that of the first integrated snap spring 6, and the first and second ring assembly of the second integrated snap spring 11 are arranged on both sides of the second mounting ring.

[0049] The inner diameter of the first mounting ring 16 is smaller than the outer diameter of the snap spring body 12 of the second integrated snap spring 11 in a static state.

[0050] The outer diameter of the first mounting ring 16 is smaller than the inner diameter of the metal quick connector 1 or the metal quick plug 3 in a static state.

[0051] The second flange 10 is arranged on the metal quick plug 3, and the second flange 10 is arranged at one end close to the plug head 9.

[0052] The installation method of the novel maintenance plate fixing piece of the present application is realized as follows:

[0053] Step 1: remove the drain valve on the water inlet pipe of the surface cooling coil, and reversely wind the metal quick connector 1 with an external thread of the present application on the raw rubber tape 8.

[0054] Step 2: directly screw the metal quick connector 1 of the present application into the drain valve thread 4 of the water inlet pipe of the surface cooling coil.

[0055] Step 3: according to the needs of the scene, cut the nylon pipe 2, and connect the metal quick connector 1, the metal quick plug 3 and the nylon pipe 2 through the first integrated snap spring 6 or the second integrated snap spring 11.

[0056] The above only describes the preferred embodiment of the present application, and does not limit the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A coil drain apparatus, characterized by: The water inlet pipe drain valve of the surface cooling coil is connected with the drain device; The drain device comprises a metal quick connector, a nylon pipe and a metal quick plug, which are connected in sequence; The metal quick connector is threadedly connected with the water inlet pipe drain valve of the surface cooling coil.

2. A coil drain device according to claim 1, wherein: The metal quick connector is tubular, and the metal quick plug is tubular.

3. A coil drain device according to claim 1, wherein: One end of the metal quick connector is provided with a thread, and the other end is internally provided with a first integrated snap spring.

4. A coil drain device according to claim 2, wherein: The metal quick connector is internally provided with a first mounting ring.

5. A coil drain apparatus according to claim 3, wherein: The metal quick connector is internally provided with a first mounting ring.

6. A coil drain apparatus as claimed in claim 3, wherein: The metal quick connector is internally provided with a first mounting ring.

7. A coil drain apparatus according to claim 6, wherein: The metal quick connector is internally provided with a first mounting ring.

8. A coil drain apparatus according to claim 7, wherein: The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring.

9. A coil drain apparatus as defined in claim 6, wherein: The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is internally provided with a first mounting ring. The metal quick connector is

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