Novel unit pipeline exhaust device for heating

Abstract

The utility model discloses a novel heating unit pipeline exhaust device which comprises an exhaust main shell and a filter screen, the filter screen is installed in a shell body of the exhaust main shell, the exhaust device for heating unit pipeline exhaust is arranged, and the exhaust device controls an exhaust electromagnetic valve to be opened for exhaust when the liquid level in the shell is low according to a liquid level detection signal. Scale formation and blockage caused by the fact that water makes contact with the opened exhaust electromagnetic valve are avoided, and a filter screen is arranged in the exhaust main shell to filter water entering the shell; compared with an existing pipeline exhaust device, the exhaust device is not provided with a floating body, the scaling phenomenon caused by poor water quality can be avoided, the filter screen can be washed through the back washing position arranged on the exhaust device, and meanwhile the exhaust electromagnetic valve is located at the low liquid level in the shell when exhausting is conducted. Therefore, an isolation air cavity exists in the exhaust main shell of the exhaust device, and the safety of the exhaust electromagnetic valve during exhaust is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of heating, in particular to a novel unit pipeline exhaust device for heating. Background Art

[0002] Municipal heating is also called urban centralized heating. The heating medium is transported and distributed from the urban centralized heating source to the heat users. It is called urban centralized heating. It is called municipal heating relative to individuals or small groups. Municipal heating simply means that there is a large heating company that provides collective heating systems to various units or living communities, which reduces the floor space, reduces air pollution, and saves energy.

[0003] The existing unit pipe exhaust device for municipal heating uses a float (a hollow sphere or an object with a specific gravity less than water) in the device body to open and close micropores for exhaust as the water level inside the pipe rises and falls. When there is air inside the pipe and the water level is low, the float sinks and opens the micropores for exhaust; when there is no air inside the pipe and the water level is high, the float rises and closes the micropores to stop exhaust. This exhaust valve is prone to scale and inflexible movement of the float or micropore exhaust holes due to water quality reasons (scaling or dirt blockage), or dirt causing blockage, so the gas inside the pipe cannot be discharged smoothly, affecting the heating effect. To this end, we propose a new unit pipe exhaust device for heating. Utility Model Content

[0004] The main purpose of the utility model is to provide a novel unit pipe exhaust device for heating. By setting an exhaust device for exhausting the heating unit pipe, the exhaust device uses a liquid level detection signal to control the exhaust solenoid valve to open and exhaust when the liquid level in the shell is low, so as to avoid water contacting the opened exhaust solenoid valve to cause scaling and clogging, and a filter is arranged in the exhaust main shell to filter the water entering the shell. Compared with the existing pipe exhaust device, the exhaust device of the utility model has no float and will not cause scaling due to poor water quality. A backwash position is arranged at the exhaust device to flush the filter. At the same time, the exhaust solenoid valve is at a low liquid level in the shell when exhausting, so that an isolated air cavity exists in the exhaust main shell of the exhaust device, which ensures the safety of the exhaust solenoid valve when exhausting, and can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A novel unit pipe exhaust device for heating comprises an exhaust main shell, the inner wall of the exhaust main shell is sequentially installed with a high liquid level controller, a low liquid level controller and a filter screen from top to bottom, the top bolt of the exhaust main shell is locked with a top cover, and the outer cover surface of the top cover is integrally formed with an exhaust pipe that communicates with the exhaust main shell, an exhaust solenoid valve is flange-connected at the outer pipe mouth of the exhaust pipe, a sewage pipe is installed at a symmetrical position at the bottom of the exhaust main shell, and a sewage ball valve is installed on each of the sewage pipes, a welded ball valve is installed at the center position of the bottom of the exhaust main shell, and the welded ball valve is located between two sewage ball valves, a first recoil pipe is welded to the outer shell of the welded ball valve away from the exhaust main shell, and the first ball valve is flange-connected at the outer pipe mouth of the first recoil pipe, a second recoil pipe is welded to the outer surface of the exhaust main shell between the low liquid level controller and the high liquid level controller, and a second ball valve is flange-connected at the outer pipe mouth of the second recoil pipe.

[0007] Further, the filter screen includes a support ring, a mesh, a pressure ring sheet and a pressure ring block. A support ring is fixed on the inner wall of the exhaust main shell above the low liquid level controller, and a mesh, a pressure ring sheet and a pressure ring block are placed on the upper ring wall of the support ring in sequence, and the pressure ring block is bolted to the support ring;

[0008] Furthermore, the upper ring wall surface of the support ring is concavely provided with an annular step groove, and a mesh sheet and a pressure ring sheet are sequentially placed in the groove cavity of the annular step groove;

[0009] Furthermore, mounting holes are provided on the surfaces of the support ring and the pressure ring block, and the support ring and the mounting holes of the pressure ring block are connected by bolts;

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] The utility model is provided with an exhaust device for exhausting the heating unit pipeline, which controls the exhaust solenoid valve to open and exhaust when the liquid level in the shell is low by a liquid level detection signal, thereby preventing water from contacting the opened exhaust solenoid valve and causing scaling and clogging thereof, and a filter is provided in the exhaust main shell to filter the water entering the shell;

[0012] Compared with the existing pipeline exhaust device, the exhaust device of the utility model has no float and will not cause scaling due to poor water quality. A backwash position is arranged at the exhaust device to flush the filter. At the same time, the exhaust solenoid valve is at a low liquid level in the shell when exhausting, so that an isolated air cavity exists in the exhaust main shell of the exhaust device, thereby ensuring the safety of the exhaust solenoid valve when exhausting and effectively ensuring the exhaust heating effect of the heating unit pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1This is a schematic diagram of the overall structure of a novel unit pipeline exhaust device for heating according to the utility model.

[0014] Figure 2 This is an exploded view of the filter screen of a novel unit pipe exhaust device for heating according to the utility model.

[0015] In the figure: 1. exhaust main shell; 2. filter screen; 3. low liquid level controller; 4. high liquid level controller; 5. exhaust pipe; 6. exhaust solenoid valve; 7. drain pipe; 8. drain ball valve; 9. welded ball valve; 10. first recoil pipe; 11. first ball valve; 12. second recoil pipe; 13. second ball valve; 14. top cover; 15. support ring; 16. ring step groove; 17. mesh; 18. pressure ring; 19. pressure ring block; 20. mounting hole. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0017] like Figure 1-2 As shown, a novel unit pipe exhaust device for heating comprises an exhaust main shell 1, the inner wall of the exhaust main shell 1 is sequentially installed with a high liquid level controller 4, a low liquid level controller 3 and a filter screen 2 from top to bottom, the top of the exhaust main shell 1 is bolted with a top cover 14, and the outer cover surface of the top cover 14 is integrally formed with an exhaust pipe 5 that communicates with the exhaust main shell 1, the outer pipe mouth of the exhaust pipe 5 is flange-connected with an exhaust solenoid valve 6, and a drain pipe 7 is installed at a symmetrical position at the bottom of the exhaust main shell 1, and each of the drain pipes 7 is installed with a drain valve. A sewage ball valve 8, a welded ball valve 9 is installed at the center position of the bottom of the exhaust main shell 1, and the welded ball valve 9 is located between the two sewage ball valves 8, and the welded ball valve 9 is welded with a first recoil pipe 10 at the outer shell body away from the exhaust main shell 1, and the first ball valve 11 is flange-connected to the outer pipe mouth of the first recoil pipe 10, and a second recoil pipe 12 is welded to the outer surface of the exhaust main shell 1 between the low liquid level controller 3 and the high liquid level controller 4, and the second ball valve 13 is flange-connected to the outer pipe mouth of the second recoil pipe 12.

[0018] By adopting the above technical scheme, the exhaust main shell 1 is flange-connected with the drain pipe 7 and the drain ball valve 8, so that after the drain ball valve 8 is opened, the drain main shell 1 can discharge downward from the drain pipe 7 and the drain ball valve 8, and the welded ball valve 9 is connected with the first ball valve 11 through the first recoil pipe 10 by flange connection, so that liquid is flushed into the exhaust main shell 1 from the first ball valve 11 and the first recoil pipe 10 to recoil clean the welded ball valve 9, and the exhaust main shell 1 is connected with the second ball valve 13 through the second recoil pipe 12 by flange connection, so that it is convenient to pass high-pressure liquid to recoil clean the filter 2 when the second ball valve 13 is opened.

[0019] Among them, the filter screen 2 includes a support ring 15, a mesh 17, a pressure ring 18 and a pressure ring block 19. The support ring 15 is fixed to the inner wall of the exhaust main shell 1 above the low liquid level controller 3, and the mesh 17, the pressure ring 18 and the pressure ring block 19 are placed in sequence on the upper ring wall of the support ring 15. The pressure ring block 19 is bolted to the support ring 15.

[0020] By adopting the above technical solution, after the support ring 15 is fixed in the exhaust main shell 1, the mesh 17 can be placed on the support ring 15, and then the pressure ring block 19 presses the pressure ring sheet 18 to press the mesh 17 on the support ring 15 for installation. The liquid passing through the middle of the support ring 15, the pressure ring sheet 18 and the pressure ring block 19 can be filtered by the mesh 17.

[0021] The upper ring wall surface of the support ring 15 is concavely provided with an annular step groove 16, and a mesh sheet 17 and a pressure ring sheet 18 are sequentially placed in the groove cavity of the annular step groove 16;

[0022] By adopting the above technical solution, the annular step groove 16 at the support ring 15 can better accommodate the mesh 17 and the pressure ring 18 for clamping and accommodating.

[0023] The surfaces of the support ring 15 and the pressure ring block 19 are both provided with mounting holes 20 , and the support ring 15 and the mounting holes 20 of the pressure ring block 19 are connected by bolts.

[0024] By adopting the above technical solution, bolts can be screwed on the mounting holes 20 of the support ring 15 and the pressure ring block 19 for locking.

[0025] It should be noted that the utility model is a novel unit pipe exhaust device for heating. When an exhaust device is required to be installed at the exhaust port of the heating unit pipe, the exhaust main shell 1 is connected to the exhaust port of the unit pipe by means of the valve port at the other end of the welded ball valve 9, and then a low liquid level controller 3 and a high liquid level controller 4 are installed in the exhaust main shell 1, so as to control the opening and closing of the exhaust solenoid valve 6 by the liquid level height signal in the exhaust main shell 1. The water in the heating unit pipe can enter the exhaust main shell 1 from the welded ball valve 9. The mesh structure at the filter screen 2 in the exhaust main shell 1 prevents dirt from entering the air cavity in the exhaust main shell 1. The low liquid level controller 3 and the high liquid level controller 4 cooperate with the external micro water level controller to connect the exhaust solenoid valve 6 for control, so as to control the exhaust solenoid valve 6 according to the water level in the exhaust main shell 1. The high and low conditions control the opening and closing of the exhaust solenoid valve 6 to perform exhaust operations. When the mesh 17 of the filter 2 is blocked, the second ball valve 13 is connected to the external high-pressure water source pipeline and opened, so that high-pressure liquid is introduced into the second recoil pipe 12 to recoil and clean the mesh 17 of the filter 2. The welded ball valve 9 can also be recoiled and cleaned with the help of the first ball valve 11 and the recoil pipe 10. At the same time, the top cover 14 above the exhaust main shell 1 can be disassembled after the bolts are removed, which is convenient for maintenance of components such as the mesh 17, the low liquid level controller 3 and the high liquid level controller 4 in the exhaust main shell 1. The mesh 17 can be made of non-metallic material to reduce the problem of scaling when it encounters water. The exhaust solenoid valve 6 is powered by a solid battery and is in a normally closed state. It is controlled to open for exhaust through a micro water level controller and can be switched on and off regularly.

[0026] It should be noted that the utility model is a novel unit pipe exhaust device for heating. The components in the utility model are all components known to technical personnel in the field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0027] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A novel unit pipe exhaust device for heating, characterized in that: The invention comprises an exhaust main shell (1), wherein the inner wall of the exhaust main shell (1) is sequentially installed with a high liquid level controller (4), a low liquid level controller (3) and a filter screen (2) from top to bottom, the top of the exhaust main shell (1) is bolted with a top cover (14), and the outer cover surface of the top cover (14) is integrally formed with an exhaust pipe (5) which is interconnected with the exhaust main shell (1), the outer pipe mouth of the exhaust pipe (5) is flange-connected with an exhaust solenoid valve (6), a sewage pipe (7) is installed at a symmetrical position on the bottom of the exhaust main shell (1), and each sewage pipe (7) is installed with a sewage ball valve (8), and the exhaust A welded ball valve (9) is installed at the center position of the bottom of the main shell (1), and the welded ball valve (9) is located between the two sewage ball valves (8). The welded ball valve (9) is welded with a first recoil pipe (10) at the outer shell of the exhaust main shell (1) away from the welded ball valve (9), and the first ball valve (11) is flange-connected at the outer pipe mouth of the first recoil pipe (10). A second recoil pipe (12) is welded on the outer surface of the exhaust main shell (1) between the low liquid level controller (3) and the high liquid level controller (4), and the second ball valve (13) is flange-connected at the outer pipe mouth of the second recoil pipe (12).

2. A novel unit pipe exhaust device for heating according to claim 1, characterized in that: The filter screen (2) comprises a support ring (15), a mesh sheet (17), a pressure ring sheet (18) and a pressure ring block (19). A support ring (15) is fixed to the inner wall of the exhaust main shell (1) above the low liquid level controller (3), and a mesh sheet (17), a pressure ring sheet (18) and a pressure ring block (19) are placed in sequence on the upper ring wall of the support ring (15), and the pressure ring block (19) is bolted to the support ring (15).

3. A novel unit pipe exhaust device for heating according to claim 2, characterized in that: The upper ring wall surface of the support ring (15) is recessed to form an annular step groove (16), and a mesh sheet (17) and a pressure ring sheet (18) are sequentially placed in the groove cavity of the annular step groove (16).

4. A novel unit pipe exhaust device for heating according to claim 3, characterized in that: The surfaces of the support ring (15) and the pressure ring block (19) are both provided with mounting holes (20), and the support ring (15) and the mounting holes (20) of the pressure ring block (19) are connected by bolts.

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