Exhaust device of heat supply pipeline

Abstract

The utility model provides a heat supply pipeline exhaust device which comprises a stop valve with the lower end connected with a heat supply pipeline, the upper end of the stop valve is connected with a filtering device used for filtering impurities in water, and the upper end of the filtering device is connected with an automatic exhaust valve. According to the automatic exhaust valve, impurities can be prevented from entering the automatic exhaust valve to block the automatic exhaust valve, and the problem of water leakage caused by untight sealing due to the fact that the impurities are clamped to the sealing end face of the automatic exhaust valve can be solved.

Description

Technical Field

[0001] The present application relates to heating pipeline technology, and in particular to an exhaust device for a heating pipeline. Background Art

[0002] In a centralized heating system, since the water temperature inside the heating pipe is too high, hot water is easy to evaporate in the heating pipe to form gas, and the gas is easy to concentrate at the high point of the heating pipe at the end. If the gas cannot be removed in time, it is easy to cause air blockage inside the heating pipe, resulting in poor circulation and uneven heating and cooling in the local or entire system, and even damage to the equipment and heating pipe. Therefore, an automatic exhaust valve is usually installed at the high point of the heating pipe at the end to automatically exhaust the gas in the heating pipe to ensure the normal operation of the heating pipe.

[0003] At present, the installation method of the automatic exhaust valve is: a stop valve is connected to the high point of the heating pipe, and the automatic exhaust valve is directly installed on the stop valve. The stop valve is used to block water from entering the automatic exhaust valve, so as to facilitate the replacement and maintenance of the automatic exhaust valve in the future. However, in the actual exhaust process, the water in the heating pipe will contain some impurities, and the general automatic exhaust valve cannot intercept the impurities. Therefore, these impurities are easy to enter the automatic exhaust valve, block the automatic exhaust valve, and cause the automatic exhaust valve to be unable to perform exhaust work. In addition, when impurities are stuck on the sealing end face of the automatic exhaust valve, it is easy to cause a loose seal and water leakage. Utility Model Content

[0004] The present application provides a heating pipe exhaust device, which is used to solve the problem that when the existing heating pipe is exhausted, impurities in the water inside the heating pipe are easy to enter the automatic exhaust valve and block the automatic exhaust valve, and are easy to get stuck on the sealing end face of the automatic exhaust valve, causing water leakage.

[0005] The present application provides a heating pipe exhaust device, comprising a stop valve connected to the heating pipe at the lower end, and a filter device for filtering impurities in water connected to the upper end of the stop valve;

[0006] The upper end of the filter device is connected with an automatic exhaust valve.

[0007] Optionally, the filtering device comprises a box, a filter screen is arranged inside the box, a side end of the box is connected to a water inlet pipe located below the filter screen, a bottom of the box is provided with a debris discharge port, and the debris discharge port is detachably connected to a plug capable of sealing the debris discharge port;

[0008] The automatic exhaust valve is installed at the upper end of the box body and communicated with the box body, and the water inlet pipe is connected to the upper end of the stop valve.

[0009] Optionally, the box body is composed of an upper cylinder, a rubber bellows, and a lower cylinder;

[0010] The rubber bellows is located between the upper cylinder and the lower cylinder, and the rubber bellows is sealed and fixedly connected to the upper cylinder and the lower cylinder at the same time;

[0011] The filter screen is located in the lower cylinder.

[0012] Optionally, a protective sleeve is fixed on the outer wall of the upper cylinder and is sleeved on the outside of the rubber bellows;

[0013] A connecting ring is sleeved and fixed on the outer wall of the lower cylinder;

[0014] The protective sleeve passes through the connecting ring and is slidably connected to the connecting ring;

[0015] A limiting ring located at the lower end of the connecting ring is fixed to the lower end of the protective sleeve.

[0016] Optionally, the lower portion of the lower cylinder is a bucket-shaped structure, and the impurity discharge port is located at the lower end of the bucket-shaped structure.

[0017] Optionally, the impurity discharge port is sealed and connected with an internal thread sleeve;

[0018] The plug comprises a knob, on which a screw rod adapted to the internal thread sleeve is fixed, the screw rod is meshingly connected with the internal thread sleeve, and the knob can press the lower end of the internal thread sleeve tightly.

[0019] Optionally, the screw rod is sleeved with a rubber sealing ring adapted thereto.

[0020] Compared with the prior art, the beneficial effects of this application are:

[0021] The heating pipe exhaust device provided in the present application is provided with a stop valve connected to the heating pipe at the lower end, and the upper end of the stop valve is connected to a filter device for filtering impurities in the water, and the upper end of the filter device is connected to an automatic exhaust valve, so that when the heating pipeline is exhausted, the filter device can intercept and filter the impurities in the water in the heating pipe, so that the impurities cannot enter the automatic exhaust valve, thereby preventing impurities from entering the automatic exhaust valve and clogging the automatic exhaust valve, and preventing impurities from getting stuck on the sealing end face of the automatic exhaust valve, causing a poor seal and water leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of the main structure of the exhaust device for a heating pipe provided in an embodiment of the present application;

[0024] Figure 2 A schematic diagram of a partial three-dimensional structure of a heating pipe exhaust device provided in an embodiment of the present application;

[0025] Figure 3 A schematic diagram of a partial front cross-sectional structure of a heating pipe exhaust device provided in an embodiment of the present application;

[0026] Figure 4 A schematic diagram of the partial explosion structure of the heating pipe exhaust device provided in an embodiment of the present application.

[0027] Description of reference numerals: heating pipe 1, stop valve 2, automatic exhaust valve 3;

[0028] Filter device 4, box body 41, upper cylinder 411, rubber bellows 412, lower cylinder 413, debris discharge port 414, through hole 415, filter screen 42, water inlet pipe 43, protective sleeve 44, connecting ring 45, limiting ring 46, plug 47, knob 471, screw 472, internal thread sleeve 48, rubber sealing ring 49. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present application.

[0030] like Figure 1-Figure 4 As shown:

[0031] A heating pipe exhaust device provided in an embodiment of the present application includes a stop valve 2 whose lower end is connected to a heating pipe 1, and a filter device 4 for filtering impurities in water is connected to the upper end of the stop valve 2.

[0032] The upper end of the filter device 4 is connected to an automatic exhaust valve 3 .

[0033] In the embodiment, the lower end of the stop valve 2 is connected to the high point of the terminal heating pipe 1 by a threaded connection. The upper end of the stop valve 2 is connected to the filter device 4 by a threaded connection. The upper end of the filter device 4 is connected to the automatic exhaust valve 3 by a threaded connection.

[0034] When in use, the stop valve 2 is in the open state, and the water in the heating pipe 1 at the end first passes through the stop valve 2 into the filter device 4 and fills the inside of the filter device 4. The filter device 4 filters the water, and the filtered water enters the automatic exhaust valve 3 from the upper end of the filter device 4. When a certain amount of water is stored in the automatic exhaust valve 3, the water stops flowing, and normal exhaust work can be performed. When gas is generated in the heating pipe 1 at the end, the gas passes through the stop valve 2 and the filter device 4 from the high point of the heating pipe 1 at the end in turn, and enters the automatic exhaust device from the upper end of the filter device 4. The automatic exhaust device exhausts the gas, thereby achieving the exhaust work of the heating pipe 1 at the end.

[0035] The exhaust device for the heating pipe provided in the present embodiment is provided with a filter device 4 for filtering impurities in the water between the stop valve 2 and the automatic exhaust valve 3, so that when the heating pipe is exhausted, the filter device 4 can intercept and filter the impurities in the water in the heating pipe 1, so that the impurities cannot enter the automatic exhaust valve 3, which can not only prevent impurities from entering the automatic exhaust valve 3 and clogging the automatic exhaust valve 3, but also prevent impurities from getting stuck on the sealing end face of the automatic exhaust valve 3, causing a poor seal and water leakage, thereby allowing the automatic exhaust valve 3 to smoothly exhaust the heating pipe 1.

[0036] In some embodiments of the present application, the filter device 4 includes a box body 41, and a filter screen 42 is disposed inside the box body 41. Specifically, the filter screen 42 is horizontally distributed, and the edge of the filter screen is sealed and fixedly connected to the inner wall of the box body 41. The side end of the box body 41 is connected to a water inlet pipe 43 located below the filter screen 42, and the bottom of the box body 41 is provided with a debris discharge port 414, and the debris discharge port 414 is detachably connected to a plug 47 capable of blocking the debris discharge port 414.

[0037] The automatic exhaust valve 3 is installed at the upper end of the box body 41 and communicated with the box body 41, and the water inlet pipe 43 is connected to the upper end of the stop valve 2. Specifically, a through hole 415 is opened at the upper end of the box body 41, and the water inlet end of the automatic exhaust valve 3 is connected to the through hole 415 by a threaded connection, and the water inlet end of the automatic exhaust valve 3 is communicated with the through hole 415.

[0038] In this embodiment, the water inlet pipe 43 is an L-shaped structure, and the horizontal section end of the water inlet pipe 43 is connected to the box body 41 and sealed and fixedly connected, and the vertical section end of the water inlet pipe 43 faces downward and is connected to the upper end of the stop valve 2 through a threaded structure, that is, the box body 41 is located on the side of the heating pipe 1 at the end, so that impurities in the box body 41 with a density greater than that of water can settle at the bottom of the box body 41. After settling to a certain amount, the plug 47 is removed and discharged from the impurity discharge port 414, thereby reducing the amount of impurities in the water in the heating pipe 1.

[0039] During use, after the water in the heating pipe 1 at the end enters the box body 41 from the water inlet pipe 43, the liquid level in the box body 41 gradually rises from bottom to top. When the liquid level is above the filter screen 42, the filter screen 42 begins to filter the water flowing above the liquid level. When the water fills the box body 41, the filtered water enters the automatic exhaust valve 3 from the through hole 415, thereby filtering the water entering the automatic exhaust valve 3.

[0040] In some embodiments of the present application, the box body 41 is composed of an upper cylinder 411, a rubber bellows 412, and a lower cylinder 413. The rubber bellows 412 is located between the upper cylinder 411 and the lower cylinder 413, and the rubber bellows 412 is sealed and fixedly connected to the upper cylinder 411 and the lower cylinder 413 at the same time.

[0041] In this embodiment, the upper cylinder 411 is a hollow structure with an opening at the lower end, the through hole 415 is located at the upper end of the upper cylinder 411, the lower cylinder 413 is a hollow structure with an opening at the upper end, the upper end of the rubber bellows 412 is sealed and fixedly connected to the lower end of the upper cylinder 411, and the lower end of the rubber bellows 412 is sealed and fixedly connected to the upper end of the lower cylinder 413.

[0042] The filter screen 42 is located in the lower cylinder 413 .

[0043] During use, when impurities clog the filter screen 42, first remove the plug 47, and the stop valve 2 is in the open state. After the plug 47 is removed, the water in the box body 41 flows out from the impurity discharge port 414, and at the same time, the water in the heating pipe 1 at the end flows into the box body 41, and the upper cylinder 411 is pressed down at this time. After the upper cylinder 411 moves down, the rubber bellows 412 is compressed, and the distance volume between the upper cylinder 411 and the filter screen 42 becomes smaller. The squeezed water between the filter screen 42 and the upper cylinder 411 flows downward through the filter screen 42, flushing down the impurities that clog the filter screen 42. Finally, the flushed impurities are discharged from the impurity discharge port 414 with the water flow, so that it is convenient to clean the impurities that clog the filter screen 42. After the impurities are discharged, close the stop valve 2, then close the impurity discharge port 414 with the plug, and then open the stop valve 2 to perform normal exhaust work. Furthermore, the stop valve 2 can be adjusted to control the water inlet of the box 41 according to the water outlet of the impurity discharge port 414, thereby preventing the water from flowing too fast at the impurity discharge port 414, resulting in excessive water discharge from the impurity discharge port 414 when cleaning the filter screen 42.

[0044] In some embodiments of the present application, a protective sleeve 44 is fixed on the outer wall of the upper cylinder 411 and is sleeved on the outside of the rubber bellows 412. A connecting ring 45 is fixed on the outer wall of the lower cylinder 413. The protective sleeve 44 passes through the connecting ring 45 and is slidably connected to the connecting ring 45. A limiting ring 46 located at the lower end of the connecting ring 45 is fixed to the lower end of the protective sleeve 44.

[0045] Further, the inner wall of the protective sleeve 44 is brought into contact with the outer wall of the rubber bellows 412 .

[0046] When in use, the rubber bellows 412 is subjected to a certain water pressure. When the rubber bellows 412 is extended to a certain length, the limiting ring 46 contacts and presses the connecting ring 45, thereby limiting the rubber bellows 412 in the axial direction, so that the rubber bellows 412 cannot continue to extend. When the rubber bellows 412 has a tendency to expand outward, the inner wall of the protective sleeve 44 limits the rubber bellows 412 in the radial direction, so that the rubber bellows 412 cannot expand outward, thereby improving the pressure-bearing capacity of the rubber bellows 412, allowing the rubber bellows 412 to have greater pressure-bearing strength in the axial and radial directions, thereby preventing the rubber bellows 412 from being broken when the water pressure in the box 41 is too high.

[0047] In order to facilitate the discharge of impurities settled in the box body 41. In some embodiments of the present application, the lower part of the lower cylinder 413 is a bucket-shaped structure, and the impurity discharge port 414 is located at the lower end of the bucket-shaped structure.

[0048] In order to facilitate the disassembly and assembly of the plug 47. In some embodiments of the present application, the position of the impurity discharge port 414 is sealed and connected with an internal thread sleeve 48.

[0049] The plug 47 includes a knob 471 , on which a screw rod 472 adapted to the internal thread sleeve 48 is fixed. The screw rod 472 is meshedly connected to the internal thread sleeve 48 , and the knob 471 can press the lower end of the internal thread sleeve 48 .

[0050] In order to improve the sealing effect of the plug 47 in sealing the impurity discharge port 414, in some embodiments of the present application, a rubber sealing ring 49 adapted to the screw rod 472 is sleeved on the screw rod 472.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the 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 cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A heating pipe exhaust device, comprising a stop valve (2) whose lower end is connected to the heating pipe, characterized in that: The upper end of the stop valve (2) is connected to a filtering device (4) for filtering impurities in water; The upper end of the filtering device (4) is connected to an automatic exhaust valve (3); The filtering device (4) comprises a box (41), a filter screen (42) is arranged inside the box (41), a side end of the box (41) is connected to a water inlet pipe (43) located below the filter screen (42), a bottom of the box (41) is provided with a debris discharge port (414), and a plug (47) capable of sealing the debris discharge port (414) is detachably connected to the debris discharge port (414); The automatic exhaust valve (3) is installed at the upper end of the box (41) and is in communication with the box (41), and the water inlet pipe (43) is connected to the upper end of the stop valve (2).

2. The heating pipe exhaust device according to claim 1, characterized in that: The box body (41) is composed of an upper cylinder (411), a rubber bellows (412), and a lower cylinder (413); The rubber bellows (412) is located between the upper cylinder (411) and the lower cylinder (413), and the rubber bellows (412) is sealed and fixedly connected to both the upper cylinder (411) and the lower cylinder (413); The filter screen (42) is located inside the lower cylinder (413).

3. The exhaust device for heating pipe according to claim 2, characterized in that: A protective sleeve (44) is fixed on the outer wall of the upper cylinder (411) and is sleeved on the outside of the rubber bellows (412); A connecting ring (45) is sleeved and fixed on the outer wall of the lower cylinder (413); The protective sleeve (44) passes through the connecting ring (45) and is slidably connected to the connecting ring (45); A limiting ring (46) located at the lower end of the connecting ring (45) is fixed at the lower end of the protective sleeve (44).

4. The exhaust device for heating pipe according to claim 2, characterized in that: The lower portion of the lower cylinder (413) is a bucket-shaped structure, and the impurity discharge port (414) is located at the lower end of the bucket-shaped structure.

5. The exhaust device for heating pipe according to claim 4, characterized in that: The impurity discharge port (414) is sealed and connected with an internal thread sleeve (48); The plug (47) comprises a knob (471) on which a screw rod (472) adapted to the internal thread sleeve (48) is fixed. The screw rod (472) is meshingly connected with the internal thread sleeve (48), and the knob (471) can press the lower end of the internal thread sleeve (48).

6. The exhaust device for heating pipes according to claim 5, characterized in that: The screw rod (472) is sleeved with a rubber sealing ring (49) adapted thereto.

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