High-pressure disc type air drain valve

Abstract

The high-pressure disc type air drain valve comprises a valve body, an air inlet hole and an air outlet hole are formed in the two sides of the valve body respectively, a valve seat is arranged on the surface of the valve body, a hexagon bolt is arranged on the bottom face of the valve body, and the hexagon bolt penetrates through the valve body and is in threaded connection with the valve seat. A valve body channel is arranged in the valve body; a disc is arranged on the surface of the valve seat, a valve deck is fixedly installed on the surface of the valve seat, and the disc is located in the valve deck. A flange is fixedly installed on the surface of the valve body, and a cavity is formed between the valve body and the flange. A self-locking groove is formed in the bottom face of the disc. A ventilation channel and a damping hole are formed in the valve seat, and the bottom end of the damping hole is communicated with the valve body channel. A fixing frame is fixedly installed on the side wall of the valve deck, and a filter screen is fixedly installed on the fixing frame. The utility model has the beneficial effects of more reasonable structural design, compact structure, high strength, long service life, reliable sealing, convenience in disassembly and stable performance, can effectively prevent air blockage, and achieves the functions of air blocking and water drainage.

Description

Technical Field

[0001] The utility model relates to the technical field of steam traps, in particular to a high-pressure disc-type air steam trap. Background Art

[0002] Humans began to use steam during the Industrial Revolution in the 18th century. Initially, steam was used as a power source to drive pumps, locomotives, etc. After a period of time, the use of steam as a power source began to decrease, and it was more widely used as a heat source. One of the characteristics of steam is that it condenses to form condensate after the heat is dissipated. Condensate is discharged by opening the valve regularly. Manually operating the valve to discharge condensate is not only troublesome, but also leaks steam. As more and more equipment uses steam, a valve that automatically discharges condensate has been developed. This is the birth of the steam trap. The steam trap is a self-operated control valve. Its function is to automatically discharge the condensate that is constantly generated in steam heating equipment or steam pipes, and prevent the steam from being discharged with the water.

[0003] However, when inert gas transportation equipment or high-pressure pipelines need to be drained, there is no automatic drainage air trap with a very compact structure and small size that can be installed in a narrow pipeline space. Air equipment or pipelines are mainly used in electric valves, instrument control and other equipment occasions. If the water content is too high, it will affect the use of the equipment, and may even cause serious damage to the equipment. Therefore, the development of high-pressure disc-type air traps is particularly important.

[0004] The announcement number is: CN201992326U, and the name is: Improved disc-type steam trap, including a valve cover, a valve body, a valve core, a valve plate and a shell, wherein an air inlet and a drain port are respectively arranged on both sides of the valve body, a shell is arranged above the valve body, a valve core fixed on the valve body is arranged in the shell, a valve plate is arranged at the upper end of the valve core, a valve cover fixed on the valve core is arranged above the valve plate, a damping hole and an air vent are respectively arranged on the valve core, the damping hole is connected with the drain port on the valve body, the damping hole is connected with the drain port through the valve body channel on the valve body, and a symmetrical capillary groove with a center of a circle is arranged on the lower end face of the valve plate located at the upper end face of the valve core in the valve cover; through this scheme, the mirror area of ​​the valve plate is reduced, the time for opening the valve plate is prolonged, condensed water can be smoothly discharged from the capillary grooves, the working steam generates secondary steam through the capillary grooves, and the leakage of the working steam is prevented. It has been proved in practice that the service life is extended to more than 9,000 hours.

[0005] The above patent can drain water automatically, but the structure is not compact enough, the strength is not enough, and it is used in the steam field. Utility Model Content

[0006] The purpose of the utility model is to provide a high-pressure disc-type air drain valve with more reasonable structural design, compact structure, high strength, long service life, reliable sealing, convenient disassembly, stable performance, which can effectively prevent the occurrence of air blockage and achieve the function of air blocking and drainage.

[0007] The utility model discloses a high-pressure disc-type air drain valve, comprising a valve body 13, two sides of the valve body 13 are respectively provided with an air inlet hole 16 and an air outlet hole 20, the surface of the valve body 13 is provided with a valve seat 9, the bottom surface of the valve body 13 is provided with a hexagonal bolt 14, the hexagonal bolt 14 penetrates the valve body 13 and is threadedly connected with the valve seat 9; a valve body channel 19 is provided in the valve body 13; a disc 7 is provided on the surface of the valve seat 9, a valve cover 6 is fixedly installed on the surface of the valve seat 9, and the disc 7 is located in the valve cover 6; a flange 5 is fixedly installed on the surface of the valve body 13, and a cavity is formed between the valve body 13 and the flange 5.

[0008] The bottom surface of the disc 7 is provided with a self-locking groove 21 .

[0009] A self-locking groove 21 is provided on the bottom surface of the disc 7. When the air presses the disc 7 tightly against the annular sealing surface of the valve seat 9 to close the inlet, the high-pressure disc-type air trap can automatically discharge the exhausted air in the transformer chamber above the disc 7, so that the high-pressure disc-type air trap can automatically discharge the exhausted air in the transformer chamber to prevent air blockage, achieve the function of air blocking and drainage, and ensure the smooth operation of the high-pressure disc-type air trap.

[0010] The valve seat 9 is provided with an air passage 18 and a damping hole 17 , and the bottom end of the damping hole 17 is connected to the valve body channel 19 .

[0011] A cavity is formed between the valve body 13 and the flange 5, and an air passage 18 and a damping hole 17 are provided in the valve seat 9, and the bottom end of the damping hole 17 is connected with the valve body channel 19, so that the high-pressure disc-type air drain valve has a check function. When the back pressure is higher than the front-end pressure, the valve closes automatically, thereby protecting the front-end equipment and pipelines.

[0012] A fixing frame 11 is fixedly mounted on the side wall of the valve cover 6 , and a filter screen 10 is fixedly mounted on the fixing frame 11 .

[0013] The filter screen 10 is provided to filter impurities in the water.

[0014] The flange 5 and the valve body 13 are fixed to each other by means of stud bolts 3 and hexagonal nuts 4 .

[0015] The valve body 13 and the flange 5 are of split design and are connected by stud bolts 3 and hexagonal nuts 4 that can withstand high pressure. A sealing gasket Ⅰ12 is installed at the connection to achieve high-pressure sealing and prevent leakage.

[0016] The joint surface between the flange 5 and the valve body 13 is provided with a sealing gasket Ⅰ12.

[0017] A sealing gasket II 15 is provided on the joint surface between the hexagonal bolt 14 and the valve body 13 .

[0018] The joint surface between the valve cover 6 and the valve seat 9 is provided with a sealing gasket III 8 .

[0019] The provided sealing gasket II 15 and sealing gasket III 8 can ensure the sealing performance between the valve cover 6 and the valve seat 9 as well as the valve body 13 .

[0020] The beneficial effects of the utility model are:

[0021] 1) A self-locking groove 21 is provided on the bottom surface of the disc 7. When the air presses the disc 7 tightly against the annular sealing surface of the valve seat 9 to close the inlet, the high-pressure disc-type air trap can automatically discharge the exhausted air in the transformer chamber above the disc 7 to prevent air blockage, thereby achieving the function of air blocking and drainage, and ensuring the smooth operation of the high-pressure disc-type air trap.

[0022] 2) A cavity is formed between the valve body 13 and the flange 5, and an air passage 18 and a damping hole 17 are provided in the valve seat 9, and the bottom end of the damping hole 17 is connected to the valve body channel 19, so that the high-pressure disc-type air drain valve has a check function. When the back pressure is higher than the front-end pressure, the valve closes automatically, which protects the front-end equipment and pipelines.

[0023] 3) The filter 10 is provided to filter impurities in the water.

[0024] 4) The valve body 13 and the flange 5 are of split design and are connected by stud bolts 3 and hexagonal nuts 4 that can withstand high pressure. A sealing gasket Ⅰ12 is installed at the connection to achieve high-pressure sealing and prevent leakage.

[0025] 5) The opening and closing disc 7 and valve seat 9 of the high-pressure disc-type air steam trap are both made of hardened martensitic stainless steel, which greatly improves the wear resistance and erosion resistance, prolongs the service life of the steam trap, and can be used to achieve the technical parameters of nominal pressure 42.0MPa and working pressure difference 15.0Mpa.

[0026] 6) The high-pressure disc-type air trap can automatically identify the gas-liquid phase on the inert gas conveying equipment or high-pressure pipeline, open and close, and discharge the accumulated water and oil in the equipment or pipeline in time to ensure the normal operation efficiency of the equipment or high-pressure pipeline. It has a compact structure design, small size and low price. For the application enterprises, it can save the total investment, reduce the construction and maintenance costs, and improve the utilization rate of funds. It is worthy of large-scale promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the utility model;

[0028] Figure 2 for Figure 1 The main view of

[0029] Figure 3 for Figure 1 A top view of

[0030] Figure 4 It is a cross-sectional view of the valve cover in the utility model;

[0031] Figure 5 It is a cross-sectional view of the disc in the utility model;

[0032] Figure 6 It is a cross-sectional view of the valve seat in the utility model;

[0033] Figure 7 It is a cross-sectional view of the fixing frame in the utility model;

[0034] Figure 8 It is a cross-sectional view of the filter screen in the utility model;

[0035] Fig. 9 It is a schematic diagram of air and condensed water in the utility model;

[0036] Fig.10 This is a diagram showing the use state of the water inlet valve in the utility model;

[0037] Fig.11 This is a diagram of the use state of the utility model with the air intake closed.

[0038] In the figure: rivet 1, nameplate 2, stud 3, hexagonal nut 4, flange 5, valve cover 6, disc 7, sealing gasket III 8, valve seat 9, filter screen 10, fixing frame 11, sealing gasket I 12, valve body 13, high-pressure hexagonal bolt 14, sealing gasket II 15, inlet hole 16, damping hole 17, air duct 18, valve body channel 19, outlet hole 20, self-locking groove 21. DETAILED DESCRIPTION

[0039] Example 1.

[0040] The following will be combined with the attached Figure 1-11 The utility model is further described.

[0041] The utility model comprises a stud 3, a hexagonal nut 4, a flange 5, a valve cover 6, a disc 7, a sealing gasket III 8, a valve seat 9, a sealing gasket I 12, a valve body 13, a high-pressure hexagonal bolt 14, a sealing gasket II 15, an inlet hole 16, a damping hole 17, an air passage 18, a valve body channel 19, an outlet hole 20, and a self-locking groove 21. The specific structure comprises a valve body 13, an air inlet hole 16 and an air outlet hole 20 are respectively arranged on both sides of the valve body 13, a valve seat 9 is arranged on the surface of the valve body 13, a hexagonal bolt 14 is arranged on the bottom surface of the valve body 13, the hexagonal bolt 14 penetrates the valve body 13 and is threadedly connected with the valve seat 9; a valve body channel 19 is arranged in the valve body 13; a disc 7 is arranged on the surface of the valve seat 9, a valve cover 6 is fixedly installed on the surface of the valve seat 9, and the disc 7 is located in the valve cover 6; a flange 5 is fixedly installed on the surface of the valve body 13, and a cavity is formed between the valve body 13 and the flange 5.

[0042] The bottom surface of the disc 7 is provided with a self-locking groove 21 .

[0043] The valve seat 9 is provided with an air passage 18 and a damping hole 17 , and the bottom end of the damping hole 17 is connected to the valve body channel 19 .

[0044] The flange 5 and the valve body 13 are fixed to each other by means of stud bolts 3 and hexagonal nuts 4 .

[0045] The joint surface between the flange 5 and the valve body 13 is provided with a sealing gasket Ⅰ12.

[0046] A sealing gasket II 15 is provided on the joint surface between the hexagonal bolt 14 and the valve body 13 .

[0047] The joint surface between the valve cover 6 and the valve seat 9 is provided with a sealing gasket III 8 .

[0048] The opening and closing disc 7 and the valve seat 9 of the high-pressure disc-type air steam trap are both made of hardened martensitic stainless steel, which greatly improves the wear resistance and erosion resistance, prolongs the service life of the steam trap, and can be used to achieve the technical parameters of a nominal pressure of 42.0MPa and a working pressure difference of 15.0Mpa.

[0049] Usage: After the high-pressure disc air trap is installed on the pipeline, Fig.10 , 11 As shown, the device automatically starts to work. First, water flows into the high-pressure disc air trap, enters the cavity formed between the valve body 13 and the flange 5 through the inlet hole 16, then enters the air passage 18, lifts the disc 7, then enters the damping hole 17, enters the valve body channel 19, and finally is discharged through the outlet hole 20.

[0050] When air enters the high-pressure disc-type air trap, the speed at which air flows under the disc 7 is much greater than the speed at which water flows. According to Bernoulli's principle, the pressure under the disc 7 decreases, and the disc 7 falls. The air enters the cavity formed between the valve body 13 and the flange 5 through the inlet hole 16, and then enters the air passage 18. It enters the variable pressure chamber above the disc 7 through the gap between the disc 7 and the valve cover 6, and presses the disc 7 tightly against the annular sealing surface of the valve seat 9, closing the inlet.

[0051] After closing the valve, the air entering the transformer chamber passes through the self-locking groove 21 set at the bottom of the disc 7, and the exhausted air can be discharged, so that the pressure in the transformer chamber drops. When the pressure in the transformer chamber drops to a certain level, the downward pressure of the disc 7 is less than the upward thrust of the disc 7, so the disc 7 is lifted, and the high-pressure disc-type air drain valve opens to drain water, and the work is repeated in this way.

[0052] Example 2.

[0053] The following will be combined with the attached Figure 1-11 The utility model is further described.

[0054] The utility model includes a rivet 1, a nameplate 2, a stud 3, a hexagonal nut 4, a flange 5, a valve cover 6, a disc 7, a sealing gasket III 8, a valve seat 9, a filter screen 10, a fixing frame 11, a sealing gasket I 12, a valve body 13, a high-pressure hexagonal bolt 14, a sealing gasket II 15, an inlet hole 16, a damping hole 17, a vent 18, a valve body channel 19, an outlet hole 20, and a self-locking groove 21. The specific structure includes a valve body 13, and both sides of the valve body 13 are respectively provided with An air inlet hole 16 and an air outlet hole 20 are provided, a valve seat 9 is provided on the surface of the valve body 13, a hexagonal bolt 14 is provided on the bottom surface of the valve body 13, the hexagonal bolt 14 penetrates the valve body 13 and is threadedly connected to the valve seat 9; a valve body channel 19 is provided in the valve body 13; a disc 7 is provided on the surface of the valve seat 9, a valve cover 6 is fixedly installed on the surface of the valve seat 9, and the disc 7 is located in the valve cover 6; a flange 5 is fixedly installed on the surface of the valve body 13, and a cavity is formed between the valve body 13 and the flange 5.

[0055] The bottom surface of the disc 7 is provided with a self-locking groove 21 .

[0056] The valve seat 9 is provided with an air passage 18 and a damping hole 17 , and the bottom end of the damping hole 17 is connected to the valve body channel 19 .

[0057] A fixing frame 11 is fixedly mounted on the side wall of the valve cover 6 , and a filter screen 10 is fixedly mounted on the fixing frame 11 .

[0058] The flange 5 and the valve body 13 are fixed to each other by means of stud bolts 3 and hexagonal nuts 4 .

[0059] The joint surface between the flange 5 and the valve body 13 is provided with a sealing gasket Ⅰ12.

[0060] A sealing gasket II 15 is provided on the joint surface between the hexagonal bolt 14 and the valve body 13 .

[0061] The joint surface between the valve cover 6 and the valve seat 9 is provided with a sealing gasket III 8 .

[0062] After the high-pressure disc air trap is installed on the pipeline, Fig.10 , 11 As shown, it starts to work automatically. First, water flows into the high-pressure disc air trap, enters the cavity formed between the valve body 13 and the flange 5 through the inlet hole 16, then enters the vent 18, lifts the disc 7, and then enters the damping hole 17. The filter screen 10 provided can be used to filter impurities in the water. The filtered water enters the valve body channel 19 and is finally discharged through the outlet hole 20.

[0063] When air enters the disc-type air trap, the speed at which air flows under the disc 7 is much greater than the speed at which water flows. According to Bernoulli's principle, the pressure under the disc 7 decreases, and the disc 7 falls. The air enters the cavity formed between the valve body 13 and the flange 5 through the inlet hole 16, and then enters the air passage 18. It enters the pressure-changing chamber above the disc 7 through the gap between the disc 7 and the valve cover 6, and presses the disc 7 tightly against the annular sealing surface of the valve seat 9, closing the inlet.

[0064] After closing the valve, the air entering the transformer chamber passes through the self-locking groove 21 set at the bottom of the disc 7, and the exhausted air can be discharged, so that the pressure in the transformer chamber drops. When the pressure in the transformer chamber drops to a certain level, the downward pressure of the disc 7 is less than the upward thrust of the disc 7, so the disc 7 is lifted, and the high-pressure disc-type air drain valve opens to drain water, and the work is repeated in this way.

[0065] When there is an order for the product, the nameplate 2 is made according to the design parameters, fixed to the disc-type air drain valve with rivets 1, and shipped after being fully packaged.

Claims

1. A high pressure disc type air trap, characterized in that: The valve body (13) comprises a valve body (13), wherein both sides of the valve body (13) are respectively provided with an air inlet hole (16) and an air outlet hole (20), a valve seat (9) is provided on the surface of the valve body (13), a hexagonal bolt (14) is provided on the bottom surface of the valve body (13), the hexagonal bolt (14) passes through the valve body (13) and is threadedly connected to the valve seat (9); a valve body passage (19) is provided in the valve body (13); a disc (7) is provided on the surface of the valve seat (9), a valve cover (6) is fixedly mounted on the surface of the valve seat (9), and the disc (7) is located in the valve cover (6); a flange (5) is fixedly mounted on the surface of the valve body (13), and a cavity is formed between the valve body (13) and the flange (5).

2. A high pressure disc type air trap as claimed in claim 1, characterized in that: The bottom surface of the disc (7) is provided with a self-locking groove (21).

3. A high pressure disc type air trap as claimed in claim 2, characterized in that: The valve seat (9) is provided with an air passage (18) and a damping hole (17), and the bottom end of the damping hole (17) is connected to the valve body channel (19).

4. A high pressure disc type air trap as claimed in claim 3, characterized in that: A fixing frame (11) is fixedly mounted on the side wall of the valve cover (6), and a filter screen (10) is fixedly mounted on the fixing frame (11).

5. A high pressure disc type air trap as claimed in claim 4, characterized in that: The flange (5) and the valve body (13) are fixed to each other by means of stud bolts (3) and hexagonal nuts (4).

6. A high pressure disc type air trap as claimed in claim 5, characterized in that: A sealing gasket I (12) is provided on the joint surface between the flange (5) and the valve body (13).

7. A high pressure disc type air trap as claimed in claim 6, characterized in that: A sealing gasket II (15) is provided on the joint surface between the hexagonal bolt (14) and the valve body (13).

8. A high pressure disc type air trap as claimed in claim 7, characterized in that: A sealing gasket III (8) is provided on the joint surface between the valve cover (6) and the valve seat (9).

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