CN216344166U

CN216344166U - Stacked pressure reducing valve with two-stage pressure reducing structure

Info

Publication number: CN216344166U
Application number: CN202122844707.9U
Authority: CN
Inventors: 赵万玉
Original assignee: Huai'an Tanner Hydraulic Machinery Co ltd
Current assignee: Huai'an Tanner Hydraulic Machinery Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-04-19
Anticipated expiration: 2031-11-19

Abstract

The utility model discloses a stacked pressure reducing valve with a two-stage pressure reducing structure, and relates to the field of pressure reducing valve equipment. The handle is rotated to drive the screw rod to move downwards, the pushing plate moves downwards, after the pressure regulating plate and the plugging plate move downwards, fluid enters through the water inlet pipe and passes through the plugging groove, hydraulic pressure on the right side of the pressure reducing valve is increased, and the fluid enters into the pressure regulating cavity through the pressure regulating channel.

Description

Stacked pressure reducing valve with two-stage pressure reducing structure

Technical Field

The utility model relates to the field of pressure reducing valve equipment, in particular to a superposition type pressure reducing valve with a two-stage pressure reducing structure.

Background

The pressure reducing valve is a valve which reduces the inlet pressure to a certain required outlet pressure through regulation and leads the outlet pressure to be automatically kept stable by relying on the energy of the medium. From the viewpoint of hydrodynamics, the pressure reducing valve is a throttling element with variable local resistance, namely, the flow speed and the kinetic energy of fluid are changed by changing the throttling area to cause different pressure losses, thereby achieving the purpose of pressure reduction. Then, the fluctuation of the pressure behind the valve is balanced with the spring force by means of the regulation of the control and regulation system, so that the pressure behind the valve is kept constant within a certain error range, fluid enters the pressure regulating cavity through the pressure regulating channel in the pressure regulating and controlling process of the pressure reducing valve, the pressure regulating plate acts, the outer edge of the existing pressure regulating plate is generally fixedly connected with the side face of the pressure regulating cavity, no buffer device is arranged above and below the pressure regulating plate, and long-time pressure regulation is easy to damage pressure regulating plate parts.

SUMMERY OF THE UTILITY MODEL

For solving above-mentioned technical problem, provide an overlapped relief pressure valve with two-stage pressure reduction structure, this technical scheme has solved and has proposed among the above-mentioned background art because the relief pressure valve carries out the in-process fluid of pressure regulation and control and enters into the pressure regulating intracavity through the pressure regulating passageway, and the pressure regulating board effect is provided with buffer in the upper and lower position of pressure regulating board, and long-time pressure regulating causes the damage easily to pressure regulating board spare.

In order to achieve the above purposes, the technical scheme adopted by the utility model is as follows:

a stacked pressure reducing valve with a two-stage pressure reducing structure comprises a water inlet pipe, wherein two pressure reducing valves are arranged on the right side of the water inlet pipe, the water inlet pipe is communicated with the pressure reducing valve on the left side, the pressure reducing valve on the left side is communicated with the pressure reducing valve on the right side, a plugging groove is formed in the lower end of the inner wall of the pressure reducing valve, a plugging plate is connected in the plugging groove in a sliding manner, a sliding rod is fixedly connected above the plugging plate, a pressure regulating cavity is formed in the pressure reducing valve, a baffle is fixedly connected to the inner wall of the lower end of the pressure regulating cavity, a baffle penetrates through the upper end of the sliding rod, a sealing ring is arranged between the sliding rod and the baffle, a sliding groove is formed in the side wall of the lower end of the pressure regulating cavity, a plurality of limiting rods are fixedly connected to the inner wall of the lower side of the sliding groove, the upper ends of the limiting rods are fixedly connected with the inner wall of the upper side of the sliding groove, and the limiting rods are connected with the pressure regulating plate in a sliding manner, the pressure regulating plate is in sliding connection in the sliding groove, a sealing ring is fixedly connected to the outer side surface of the pressure regulating plate, and the outer side surface of the sealing ring is abutted to the side wall of the sliding groove.

Preferably, the limiting rod is sleeved with two supporting springs, and the two supporting springs are respectively located at the upper end and the lower end of the pressure regulating plate.

Preferably, the upper side wall threaded connection of relief pressure valve has the lead screw, the upper end fixedly connected with handle of lead screw, the lower extreme of lead screw rotates and is connected with the slurcam, slurcam and pressure regulating intracavity wall sliding connection, the lower fixed surface of slurcam is connected with pressure spring, pressure spring's lower extreme and pressure regulating plate's last fixed surface are connected.

Preferably, the right side wall of the plugging groove is provided with a water outlet, the upper side wall of the water outlet is provided with a pressure regulating channel, and the upper end of the pressure regulating channel is communicated with the sliding groove.

Preferably, the right side the left end of relief pressure valve is provided with the water inlet, be provided with buffer gear in the water inlet, buffer gear includes the shutoff ring, shutoff ring fixed connection is on the lateral wall of water inlet, the right side of shutoff ring is provided with the limiting plate, limiting plate fixed connection is on the lateral wall of water inlet.

Preferably, sliding connection has the earial drainage frame on the limiting plate, the left end fixedly connected with shutoff piece of earial drainage frame, the mounting groove has been seted up in the left side of shutoff piece, mounting groove right side inner wall fixedly connected with is sealed to fill up, the outlet has been seted up on the mounting groove lateral wall.

Preferably, the cover is equipped with buffer spring on the earial drainage frame, buffer spring's left end and the right side wall fixed connection of shutoff piece, buffer spring's right-hand member and the left side fixed surface of limiting plate are connected, shutoff piece and water inlet inner wall sliding connection.

The utility model provides a stacked pressure reducing valve with a two-stage pressure reducing structure, which has the following beneficial effects:

in the utility model, a sliding groove is arranged in a pressure regulating cavity, a pressure regulating plate is connected with the inner wall of the sliding groove in a sliding manner, a limiting rod is connected on the pressure regulating plate in a sliding manner, two supporting springs are sleeved on the limiting rod and are respectively positioned at the upper side and the lower side of the pressure regulating plate, when a handle is rotated, a screw rod is driven to move downwards, a pushing plate moves downwards, after the pressure regulating plate and a plugging plate move downwards, fluid enters through a water inlet pipe and passes through the plugging groove, the right side of a pressure reducing valve is increased in hydraulic pressure and enters into the pressure regulating cavity through a pressure regulating channel, after the pressure in the pressure regulating cavity is increased suddenly, the pressure regulating plate slides up and down under the action of the supporting springs, after the pressure is gradually stabilized, a flow diagram pushes the pressure regulating plate to move upwards, after the pressures at the left side and the right side of the pressure regulating valve are balanced, the positions of the plugging plate and the pressure regulating plate are stabilized, the pressure regulating plate slides in the sliding groove, meanwhile, the supporting springs are sleeved on the limiting rod, and act on the pressure regulating plate, effectively avoiding the damage of the pressure adjusting plate caused by the sudden increase of the pressure.

Drawings

FIG. 1 is a schematic cross-sectional view of a pressure reducing valve according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a partially enlarged view of B in fig. 1.

The reference numbers in the figures are:

1. a water inlet pipe; 2. a pressure reducing valve; 3. plugging the groove; 4. a plugging plate; 5. a slide bar; 6. a pressure regulating cavity; 7. a sliding groove; 8. a limiting rod; 9. a pressure regulating plate; 10. a support spring; 11. a seal ring; 12. a pressure spring; 13. a push plate; 14. a screw rod; 15. a handle; 16. a voltage regulating channel; 17. a plugging ring; 18. a limiting plate; 19. a bleed frame; 20. a buffer spring; 21. a blocking member; 22. a gasket; 23. a water drain hole; 24. a baffle plate; 25. a water outlet; 26. a water inlet.

Detailed Description

The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

Referring to fig. 1-3, a stacked pressure reducing valve with a two-stage pressure reducing structure comprises a water inlet pipe 1, two pressure reducing valves 2 are arranged on the right side of the water inlet pipe 1, the water inlet pipe 1 is communicated with the left pressure reducing valve 2, the left pressure reducing valve 2 is communicated with the right pressure reducing valve 2, a plugging groove 3 is formed in the lower end of the inner wall of the pressure reducing valve 2, a plugging plate 4 is slidably connected in the plugging groove 3, a sliding rod 5 is fixedly connected above the plugging plate 4, a pressure regulating cavity 6 is arranged in the pressure reducing valve 2, a baffle 24 is fixedly connected to the inner wall of the lower end of the pressure regulating cavity 6, the upper end of the sliding rod 5 penetrates through the baffle 24 and is fixedly connected with a pressure regulating plate 9, a sealing ring is arranged between the sliding rod 5 and the baffle 24, a sliding groove 7 is formed in the side wall of the lower end of the pressure regulating cavity 6, a plurality of limiting rods 8 are fixedly connected to the inner wall of the lower side of the sliding groove 7, the upper ends of the limiting rods 8 are fixedly connected to the inner wall of the sliding groove 7, gag lever post 8 and pressure regulating board 9 sliding connection, pressure regulating board 9 sliding connection in sliding tray 7, the outside fixed surface of pressure regulating board 9 is connected with sealing washer 11, the outside surface and the 7 lateral walls butt of sliding tray of sealing washer 11, when using, when rotating handle 15, drive lead screw 14 downstream, catch plate 13 downstream, pressure regulating board 9 and shutoff board 4 after the downstream, the fluid passes through inlet tube 1 and gets into, pass shutoff groove 3, the hydraulic pressure increase in relief valve 2 right side, enter into pressure regulating chamber 6 through pressure regulating channel 16, pressure regulating board 9 slides from top to bottom under supporting spring 10's effect after the pressure regulating intracavity pressure increases suddenly, pressure stabilizes the back gradually, fluid promotes pressure regulating board 9 and upwards moves, after pressure balance of the relief valve 2 left and right sides, shutoff board 4 and pressure regulating board 9 position are stable.

The limiting rod 8 is sleeved with two supporting springs 10, the two supporting springs 10 are respectively located at the upper end and the lower end of the pressure regulating plate 9, the upper side wall of the pressure reducing valve 2 is in threaded connection with a lead screw 14, the upper end of the lead screw 14 is fixedly connected with a handle 15, the lower end of the lead screw 14 is rotatably connected with a pushing plate 13, the pushing plate 13 is in sliding connection with the inner wall of the pressure regulating cavity 6, the lower surface of the pushing plate 13 is fixedly connected with a pressure spring 12, and the lower end of the pressure spring 12 is fixedly connected with the upper surface of the pressure regulating plate 9.

The right side wall of the plugging groove 3 is provided with a water outlet 25, the upper side wall of the water outlet 25 is provided with a pressure regulating channel 16, the upper end of the pressure regulating channel 16 is communicated with the sliding groove 7, the left end of the right pressure reducing valve 2 is provided with a water inlet 26, a buffer mechanism is arranged in the water inlet 26 and buffers fluid through the arrangement of the buffer mechanism to avoid damage to the plugging plate 4 in the right pressure reducing valve 2 caused by overlarge fluid pressure, the buffer mechanism comprises a plugging ring 17, the plugging ring 17 is fixedly connected on the side wall of the water inlet 26, the right side of the plugging ring 17 is provided with a limiting plate 18, the limiting plate 18 is fixedly connected on the side wall of the water inlet 26, the limiting plate 18 is slidably connected with a drainage frame 19, the left end of the drainage frame 19 is fixedly connected with a plugging piece 21, the left side of the plugging piece 21 is provided with a mounting groove, the right side inner wall of the mounting groove is fixedly connected with a sealing gasket 22, and the side wall of the mounting groove is provided with a drainage hole 23, the cover is equipped with buffer spring 20 on the earial drainage frame 19, buffer spring 20's left end and the right side wall fixed connection of shutoff piece 21, buffer spring 20's right-hand member and the left side fixed surface of limiting plate 18 are connected, shutoff piece 21 and the 26 inner wall sliding connection of water inlet, the fluid enters into the water inlet 26 of right side relief valve 2 through the delivery port 25 of left side relief valve 2, promote

shutoff piece

21 and 19 case compression buffer spring 20 of earial drainage frame and move to the right side, when the right-hand member mouth of shutoff ring 17 is located the left side of outlet 23, the fluid passes through outlet 23 and earial drainage frame 19 and enters into right side relief valve 2 in, carry out pressure control through adjusting right side relief valve 2.

The working principle and the using process of the utility model are as follows:

when the pressure-regulating valve is used, when the handle 15 is rotated to drive the screw rod 14 to move downwards, the pushing plate 13 moves downwards, after the pressure-regulating plate 9 and the blocking plate 4 move downwards, fluid enters through the water inlet pipe 1 and passes through the blocking groove 3, the hydraulic pressure on the right side of the pressure-reducing valve 2 is increased, the fluid enters into the pressure-regulating cavity 6 through the pressure-regulating channel 16, after the pressure in the pressure-regulating cavity 6 is suddenly increased, the pressure-regulating plate 9 slides up and down under the action of the supporting spring 10, after the pressure is gradually stabilized, the fluid pushes the pressure-regulating plate 9 to move upwards, after the pressures on the left side and the right side of the pressure-reducing valve 2 are balanced, the positions of the blocking plate 4 and the pressure-regulating plate 9 are stabilized, the fluid enters into the water inlet 26 of the pressure-reducing valve 2 on the right side through the water outlet 25 of the pressure-reducing valve 2 on the left side, the blocking piece 21 and the flow-discharging frame 19 are pushed to compress the buffer spring 20 to move towards the right side, when the right port of the blocking ring 17 is positioned on the left side of the water outlet 23, the water-discharging hole 23, the fluid enters into the pressure-reducing valve 2 through the water-discharging hole 23 and flow-discharging frame 19, the pressure regulation is performed by adjusting the right-side pressure reducing valve 2.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a stack formula relief pressure valve with two-stage pressure reduction structure, its characterized in that, includes inlet tube (1), the right side of inlet tube (1) is provided with two relief pressure valve (2), inlet tube (1) is linked together with left side relief pressure valve (2), and the left side relief pressure valve (2) are linked together with right side relief pressure valve (2), shutoff groove (3) have been seted up to the inner wall lower extreme of relief pressure valve (2), sliding connection has shutoff board (4) in shutoff groove (3), the top fixedly connected with slide bar (5) of shutoff board (4), be provided with pressure regulating chamber (6) in relief pressure valve (2), the lower extreme inner wall fixedly connected with baffle (24) in pressure regulating chamber (6), baffle (24) run through in slide bar (5) upper end to fixedly connected with pressure regulating board (9), be provided with the sealing ring between slide bar (5) and baffle (24), sliding tray (7) have been seted up to pressure regulating chamber (6) lower extreme lateral wall, sliding tray (7) downside inner wall fixedly connected with a plurality of gag lever post (8), gag lever post (8) upper end and sliding tray (7) upside inner wall fixed connection, gag lever post (8) and pressure regulating plate (9) sliding connection, pressure regulating plate (9) sliding connection in sliding tray (7), the outside fixed surface of pressure regulating plate (9) is connected with sealing washer (11), the outside surface and sliding tray (7) lateral wall butt of sealing washer (11).

2. A stack pressure reducing valve having a two-stage pressure reducing structure according to claim 1, wherein: two supporting springs (10) are sleeved on the limiting rod (8), and the two supporting springs (10) are respectively located at the upper end and the lower end of the pressure regulating plate (9).

3. A stack pressure reducing valve having a two-stage pressure reducing structure according to claim 1, wherein: the side wall threaded connection that goes up of relief pressure valve (2) has lead screw (14), the upper end fixedly connected with handle (15) of lead screw (14), the lower extreme of lead screw (14) rotates and is connected with catch plate (13), catch plate (13) and pressure regulating chamber (6) inner wall sliding connection, the lower fixed surface of catch plate (13) is connected with pressure spring (12), the lower extreme of pressure spring (12) and the last fixed surface of pressure regulating plate (9) are connected.

4. A stack pressure reducing valve having a two-stage pressure reducing structure according to claim 1, wherein: a water outlet (25) is formed in the right side wall of the plugging groove (3), a pressure regulating channel (16) is formed in the upper side wall of the water outlet (25), and the upper end of the pressure regulating channel (16) is communicated with the sliding groove (7).

5. A stack pressure reducing valve having a two-stage pressure reducing structure according to claim 1, wherein: the right side the left end of relief pressure valve (2) is provided with water inlet (26), be provided with buffer gear in water inlet (26), buffer gear includes shutoff ring (17), shutoff ring (17) fixed connection is on the lateral wall of water inlet (26), the right side of shutoff ring (17) is provided with limiting plate (18), limiting plate (18) fixed connection is on the lateral wall of water inlet (26).

6. A stack pressure reducing valve having a two-stage pressure reducing structure according to claim 5, wherein: sliding connection has earial drainage frame (19) on limiting plate (18), the left end fixedly connected with shutoff piece (21) of earial drainage frame (19), the mounting groove has been seted up in the left side of shutoff piece (21), the sealed pad (22) of mounting groove right side inner wall fixedly connected with, outlet (23) have been seted up on the mounting groove lateral wall.

7. A stack pressure reducing valve having a two-stage pressure reducing structure according to claim 6, wherein: the cover is equipped with buffer spring (20) on earial drainage frame (19), the left end of buffer spring (20) and the right side wall fixed connection of shutoff piece (21), the right-hand member of buffer spring (20) and the left side fixed surface of limiting plate (18) are connected, shutoff piece (21) and water inlet (26) inner wall sliding connection.