Self-drainage pressure reducing valve

Abstract

An adjusting rod vertically penetrates through the upper end of a valve cover, a main spring is installed at the lower end of the valve cover, the main spring is controlled by the adjusting rod to stretch out and draw back, a diaphragm is arranged between the valve cover and a valve body, a pressing ring is arranged in the center of the diaphragm, and an ejector rod vertically penetrates through the center of the valve body. The upper end of the valve seat is matched with a water outlet in the center of the valve body to be opened and closed, the valve seat is connected with the filter element through a valve seat spring, a valve clack of the lever support is opened and closed by controlling the jump pin to ascend and descend, the lower end of the lever support abuts against the upper end of the drainage valve element, and the lever support limits an inner ring of the floating body. The lower end of the drainage valve element is elastically connected with the drainage base through a drainage base spring. When the pressure reducing valve works, the adjusting ring is rotated to drive the adjusting rod to rotate, the main spring and the diaphragm press the valve seat downwards, the valve seat moves downwards to open the drainage valve, automatic drainage of the pressure reducing valve is completed, and pipeline deposition and corrosion are prevented.

Description

Technical Field

[0001] This utility model relates to the field of pressure reducing valve technology, and in particular to a self-draining pressure reducing valve. Background Technology

[0002] Water can easily seep into the pipes when pressure reducing valves are used, resulting in a large amount of water accumulation, which can cause siltation, corrosion, and blockage. In existing technologies, manual drainage via a drain valve can reduce the rate of scaling on the inner wall of the pipes and effectively extend the service life of the pipes. However, the disadvantage is that manual drainage is inconvenient and drainage is not timely. Summary of the Invention

[0003] The purpose of this invention is to provide a self-draining pressure reducing valve.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A self-draining pressure reducing valve, characterized in that it comprises a valve cover, a valve body, and a bottom cover fixedly connected vertically. An adjusting rod is vertically inserted through the upper end of the valve cover, and a main spring is installed at the lower end of the valve cover. The main spring's extension and retraction are controlled by the adjusting rod. A diaphragm is fixedly provided between the valve cover and the valve body, and a pressure ring is fixedly provided in the center of the diaphragm. A top rod is vertically inserted through the center of the valve body, and the upper end of the top rod is threadedly connected to the pressure ring. The upper part of the bottom cover is provided with a valve seat, a valve seat spring, and a filter element. The upper end of the valve seat cooperates with the outlet in the center of the valve body for opening and closing. The lower part of the valve seat is connected to the upper part of the filter element by the valve seat spring. The filter element is elastically connected, with a water-blocking ring fixedly installed at its lower end. The water-blocking ring is slidably connected to the inner wall of the bottom cover. The lower part of the bottom cover is provided with a lever, a jump pin, a lever support, a float, a secondary valve seat, a drain valve core, a drain seat, and a drain seat spring. The water-blocking ring moves down, causing the jump pin to move down to open the valve disc of the lever support. The lever controls the jump pin to move and reset. The float is sleeved on the outside of the lever support. The lower end of the lever support abuts against the upper end of the drain valve core. The lever support limits the inner ring of the float. The drain seat is fixed to the lower end of the bottom cover. The lower end of the drain valve core is elastically connected to the drain seat through the drain seat spring.

[0006] Furthermore, the upper end of the adjusting rod is provided with an adjusting ring, which is fitted onto the outer side of the upper end of the valve cover, and the adjusting rod and the adjusting ring are connected by hexagonal bolts.

[0007] Furthermore, the pressure ring includes an upper pressure ring and a lower pressure ring. The upper pressure ring is located at the upper end of the diaphragm, and the lower pressure ring is embedded in the central hole of the diaphragm and the upper pressure ring. The push rod passes through the lower pressure ring vertically, and a hexagonal thin nut is sleeved on the upper end of the push rod. The upper pressure ring, the lower pressure ring, and the diaphragm are clamped by screwing the hexagonal thin nut downwards.

[0008] Furthermore, a support seat is fixedly provided at the upper end of the filter element, the upper end of the support seat is sleeved on the outside of the lower valve hole of the valve body, and the lower end of the support seat is sleeved on the outside of the valve seat.

[0009] Furthermore, an adjusting nut is sleeved on the outer side of the adjusting rod, and the adjusting nut limits the upper end of the main spring.

[0010] Furthermore, a valve sleeve is fixedly provided on the inner side of the lower part of the float, and a convex ring is provided on the outer side of the lever support, with the convex ring limiting the upper end of the valve sleeve.

[0011] Furthermore, a first O-ring is provided at the connection between the inner ring of the valve body and the outer ring of the bottom cover.

[0012] This utility model's pressure reducing valve has a waveform diaphragm structure at the top and a lever drain valve at the bottom. When the pressure reducing valve is working, rotating the adjusting ring drives the adjusting rod to rotate, causing the main spring and diaphragm to press down on the valve seat. The valve seat moves down and opens the drain valve, completing the automatic drainage of the pressure reducing valve and preventing pipe siltation and corrosion. Attached Figure Description

[0013] Figure 1 This is a side sectional view of the present invention;

[0014] Figure 2 This is a diagram of the external structure of this utility model.

[0015] Figure label:

[0016] 1. Drain valve core, 2. Drain seat spring, 3. Drain seat, 4. Secondary valve seat, 5. Float.

[0017] 6. First O-ring, 7. Valve body, 8. Lower pressure ring, 9. Diaphragm, 10. Upper pressure ring

[0018] 11 Valve cover, 12 Main spring, 13 Adjusting ring, 14 Hex bolt, 15 Adjusting rod,

[0019] 16 Adjusting nut, 17 Hexagonal thin nut, 18 Push rod, 19 Valve seat, 20 Second O-ring,

[0020] 21 Support base, 22 Bottom cover, 23 Valve seat spring, 24 Filter element, 25 Water baffle ring,

[0021] 26. Phillips head countersunk screw; 27. Jumper pin; 28. Lever; 29. ​​Lever support; 30. Third O-ring.

[0022] 31 Fourth O-ring, 32 Fifth O-ring, 33 Sixth O-ring, 34 Hex head bolt,

[0023] 35 Pressure gauge. Detailed Implementation

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

[0025] This embodiment discloses a self-draining pressure reducing valve, such as Figure 1 As shown, the valve includes a valve cover 11, a valve body 7, and a bottom cover 22 that are fixedly connected in sequence. An adjusting rod 15 is vertically inserted through the upper end of the valve cover 11, and a main spring 12 is installed at the lower end of the valve cover 11. An adjusting nut 16 is sleeved on the outside of the adjusting rod 15, and the adjusting nut 16 limits the upper end of the main spring 12.

[0026] An adjusting ring 13 is provided at the upper end of the adjusting rod 15. The adjusting ring 13 is fitted onto the outer side of the upper end of the valve cover 11. The adjusting rod 15 and the adjusting ring 13 are connected by a hexagonal bolt 14. Figure 2 As shown, the main spring 12 is controlled by rotating the adjusting ring 13 to drive the adjusting rod 15 to rotate.

[0027] A diaphragm 9 is provided between the valve cover 11 and the valve body 7. A pressure ring is fixedly installed in the center of the diaphragm 9. A push rod 18 is vertically inserted through the center of the valve body 7. The upper end of the push rod 18 is threadedly connected to the pressure ring. Figure 1 As shown, the pressure ring includes an upper pressure ring 10 and a lower pressure ring 8. The upper pressure ring 10 is located at the upper end of the diaphragm 9. The lower pressure ring 8 is embedded in the central hole of the diaphragm 9 and the upper pressure ring 10. The push rod 18 passes through the lower pressure ring 8 vertically. The upper end of the push rod 18 is fitted with a hexagonal thin nut 17. The upper pressure ring 10, the lower pressure ring 8 and the diaphragm 9 are clamped by screwing the hexagonal thin nut 17 downward.

[0028] The upper part of the bottom cover 22 is provided with a valve seat 19, a valve seat spring 23 and a filter element 24. The upper end of the valve seat 19 is in cooperation with the water outlet in the center of the valve body 7 to open and close. The lower part of the valve seat 19 is elastically connected to the upper part of the filter element 24 through the valve seat spring 23. The upper end of the filter element 24 is fixedly provided with a support seat 21. The upper end of the support seat 21 is sleeved on the outside of the lower valve hole of the valve body 7, and the lower end of the support seat 21 is sleeved on the outside of the valve seat 19. The lower end of the filter element 24 is provided with a water baffle ring 25. The water baffle ring 25 is fixedly connected to the lower end of the support seat 21 through a cross-slot countersunk screw 26. The water baffle ring 25 is slidably connected to the inner wall of the bottom cover 22.

[0029] like Figure 1As shown, the lower part of the bottom cover 22 is provided with a lever 28, a jump pin 27, a lever support 29, a float 5, a secondary valve seat 4, a drain valve core 1, a drain seat 3, and a drain seat spring 2. The valve disc of the lever support 29 is opened and closed by the rise and fall of the jump pin 27. The water baffle ring 25 moves down, causing the jump pin 27 to move down to open the valve disc of the lever support 29. The lever 28 controls the jump pin 27 to reset to close the valve disc of the lever support 29. The float 5 is sleeved on the outside of the lever support 29. The lower end of the lever support 29 abuts against the upper end of the drain valve core 1. A valve sleeve 38 is fixed on the inner side of the lower part of the float 5. A convex ring is provided on the outside of the lever support 29. The convex ring limits the upper end of the valve sleeve 38. The drain seat 3 is fixed to the lower end of the bottom cover 22. The lower end of the drain valve core 1 is elastically connected to the drain seat 3 through the drain seat spring 2.

[0030] In this embodiment, the connections between the components are sealed with O-rings, such as... Figure 1 As shown, the inner ring of the valve body 7 and the outer ring of the bottom cover 22 are sealed by the first O-ring 6, the valve seat 19 and the support seat 21 are sealed by the second O-ring 20, the convex ring and the upper end of the valve sleeve 38 are sealed by the third O-ring 30, the valve core 1 and the valve sleeve 38 are sealed by the fourth O-ring 31, the drain seat 3 and the bottom cover 22 are sealed by the fifth O-ring 32, and the valve core 1 and the drain seat 3 are sealed by the sixth O-ring 33.

[0031] like Figure 2 As shown, the valve cover 11 and the valve body 7 are fixedly connected by four vertical hexagonal head bolts 34 at the four corners, and a pressure gauge 35 is provided on one side of the valve body 7.

[0032] In the initial state of this embodiment, the main spring 12, valve seat spring 23 and drain seat spring 2 are all in a free state, the valve disc of the lever support 29 is closed, and the fluid enters the cavity between the valve seat 19 and the bottom cover 22 through the water inlet pipe on the left side of the valve body 7 and the outer ring opening of the support seat 21. At this time, the valve seat 19 is tightly fitted with the water outlet of the valve body 7, and the fluid is sealed in the cavity between the valve seat 19 and the bottom cover 22.

[0033] During operation, the operator rotates the adjusting ring 13, causing the adjusting rod 15 to rotate, which in turn presses the main spring 12 downward. The main spring 12 pushes the diaphragm 9 downward, and the push rod 18 moves down synchronously with the diaphragm 9. The push rod 18 presses down, causing the valve seat 19 to move down. At this time, the valve seat 19 is separated from the outlet of the valve body 7. Because the water-blocking ring 25 at the bottom of the valve seat 19 blocks the water, the fluid is filtered by the filter element 24 and flows into the outlet pipe on the right side of the valve body 7 from the gap between the valve seat 19 and the outlet of the valve body 7.

[0034] When the valve seat 19 moves down, the support seat 21 and the water baffle ring 25 move down through the valve seat spring 23. The water baffle ring 25 contacts and presses down the jump pin 27. The jump pin 27 moves down and opens the valve disc of the lever support 29. The fluid seeping out of the valve seat 19 will enter the cavity of the lever support 29 and the drain valve core 1, and be discharged in time through the bottom of the drain valve core 1.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A self-draining pressure-reducing valve characterized by, The utility model provides a valve, including upper and lower fixed connection of bonnet (11), valve body (7) and bottom cover (22) in proper order, the upper end of bonnet (11) is equipped with adjusting rod (15) along vertical, the lower end of bonnet (11) installs main spring (12), and main spring (12) is controlled telescopic by adjusting rod (15), and the central fixed diaphragm (9) is equipped with pressure ring between bonnet (11) and valve body (7), the central vertical of valve body (7) is equipped with top rod (18), and the upper end of top rod (18) is connected through thread with pressure ring, and the upper portion of bottom cover (22) is equipped with valve seat (19), valve seat spring (23) and filter core (24), and the upper end of valve seat (19) is opened and closed with the water outlet of valve body (7) central cooperation, and the lower portion of valve seat (19) is elastically connected with the upper portion of filter core (24) through valve seat spring (23), and the lower end of filter core (24) is fixedly equipped with water baffle (25), and water baffle (25) is slidably connected with the inner wall of bottom cover (22), and the lower portion of bottom cover (22) is equipped with lever (28), jump pin (27), lever support (29), float (5), vice valve seat (4), drain valve core (1), drain valve seat (3) and drain valve seat spring (2), and water baffle (25) is driven to move down jump pin (27) to open the valve flap of lever support (29), and lever (28) controls jump pin (27) to move and reset, and float (5) is sleeved on the outside of lever support (29), and the lower end of lever support (29) abuts against the upper end of drain valve core (1), and the inner ring of lever support (29) limits float (5), and drain valve seat (3) is fixed on the lower end of bottom cover (22), and the lower end of drain valve core (1) is elastically connected with drain valve seat (3) through drain valve seat spring (2).

2. The self-draining pressure reducing valve according to claim 1, wherein The upper end of the adjusting rod (15) is provided with an adjusting ring (13), the adjusting ring (13) is sleeved on the outside of the upper end of the bonnet (11), and the adjusting rod (15) is connected with the adjusting ring (13) through a hexagonal bolt (14).

3. The self-draining pressure reducing valve according to claim 1, wherein The pressure ring includes an upper pressure ring (10) and a lower pressure ring (8), the upper pressure ring (10) is located at the upper end of the diaphragm (9), the lower pressure ring (8) is embedded in the central holes of the diaphragm (9) and the upper pressure ring (10), the top rod (18) penetrates the lower pressure ring (8) vertically, the upper end of the top rod (18) is sleeved with a hexagonal thin nut (17), and the upper pressure ring (10), the lower pressure ring (8) and the diaphragm (9) are clamped by screwing down the hexagonal thin nut (17).

4. The self-draining pressure reducing valve according to claim 1, wherein The upper end of the filter core (24) is fixedly provided with a support seat (21), the upper end of the support seat (21) is sleeved on the outside of the lower valve hole of the valve body (7), and the lower end of the support seat (21) is sleeved on the outside of the valve seat (19).

5. The self-draining pressure reducing valve according to claim 1, wherein The outside of the adjusting rod (15) is sleeved with an adjusting nut (16), and the adjusting nut (16) limits the upper end of the main spring (12).

6. The self-draining pressure reducing valve of claim 1, wherein The inside of the lower part of the float (5) is fixedly provided with a valve sleeve (38), the outside of the lever support (29) is provided with a convex ring, and the convex ring limits the upper end of the valve sleeve (38).

7. The self-draining pressure reducing valve of claim 1, wherein The connection between the inner ring of the valve body (7) and the outer ring of the bottom cover (22) is provided with a first O-ring (6).

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