Pressure reducing valve with flow adjusting mechanism

Abstract

The pressure reducing valve with the flow adjusting mechanism comprises a valve body, the two sides of the valve body are fixedly connected with a water inlet pipe and a water outlet pipe through side plates respectively, the middle of an inner cavity of the valve body is fixedly connected with a partition plate, the upper surface of the valve body is fixedly connected with a valve deck, and the top of an inner cavity of the valve deck is in threaded connection with the upper end of a valve rod through a threaded connection hole. The lower end of the valve rod is fixedly connected with one end of a main spring, the other end of the main spring is fixedly connected with a buffer plate, and the lower surface of the movable plate is fixedly connected with a valve block. The position, opposite to the valve block, of the surface of the partition plate is correspondingly provided with an adjusting opening. Through cooperation of the partition plate, the movable plate, the valve block, the valve rod, the buffer plate, the pressure dividing plate, the buffer cylinder, the main spring and the positioning rod, the pressure reducing valve can flexibly adjust the flow of fluid, the pressure reducing effect of the pressure reducing valve can be enhanced in an auxiliary mode, and the impact force of the fluid is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure reducing valve technical field, concretely relates to a pressure reducing valve with flow regulating mechanism. BACKGROUND

[0002] The pressure reducing valve is through adjusting, import pressure is reduced to certain export pressure of need, and relies on medium itself's energy, makes export pressure automatic keeping stable valve, from the point of view of fluid mechanics, the pressure reducing valve is a local resistance can change throttle element, that is through changing throttle area, makes flow velocity and fluid's kinetic energy change, causes different pressure loss, thereby reaches the purpose of reducing pressure, then relies on control and adjustment system's adjustment, makes the fluctuation of valve rear pressure and spring force is balanced, makes valve rear pressure keeps constant in certain error range, but the existing pressure reducing valve mostly only has simple pressure reducing function, cannot adjust the upper limit of flow of pressure reducing valve according to use demand, thereby limit the application scope of pressure reducing valve, and the existing pressure reducing valve is generally integral type structure, because the valve body inside long time water flow, easy to produce scale in the valve body inboard wall, long -term accumulation can influence water quality and the use effect of pressure reducing valve. SUMMARY

[0003] In order to overcome the defects existing in the prior art, a pressure reducing valve with flow regulating mechanism is provided to solve the problems raised in the background art.

[0004] To achieve the above object, a pressure reducing valve with flow regulating mechanism is provided, which comprises: a valve body, the valve body is fixedly connected with an inlet pipe and an outlet pipe through side plates on both sides, a partition plate is fixedly connected in the middle of the valve body inner cavity, a valve cover is fixedly connected to the upper surface of the valve body, the upper end of a valve rod is screwed through a screw hole in the top of the valve cover inner cavity, the lower end of the valve rod is fixedly connected with a moving plate, the moving plate is fixedly connected with a valve block on the lower surface, an adjusting port is formed on the surface of the partition plate corresponding to the position of the valve block, a buffer groove is formed in the valve block, a positioning rod is fixedly connected in the buffer groove, one end of a main spring is fixedly connected to the lower end of the positioning rod, the other end of the main spring is fixedly connected with a buffer plate, a buffer cylinder is connected to the upper surface of the buffer plate corresponding to the position of the buffer groove, the buffer plate is slidably connected in the partition plate through the adjusting port, and the partition plate is fixedly connected to the lower surface of the partition plate.

[0005] Preferably, the valve body is in a square cylindrical structure, two groups of sealing grooves are symmetrically formed on the end faces of the valve body, the two groups of sealing grooves are in a mouth-shaped structure, a sealing layer is fixedly connected in the sealing grooves, and the two groups of side plates are fixedly connected to the two ends of the valve body through bolts.

[0006] Preferably, the side plate has a square structure, and the sealing frame is connected to the position of the side plate surface relative to the sealing groove. The dimensions of the sealing frame and the sealing groove are compatible. The sealing frame has a U-shaped structure, and multiple sets of extrusion strips are fixedly connected parallel to each other at equal intervals along the circumference of the sealing frame surface. At the same time, the extrusion strips have a square structure and the cross-section of the extrusion strips is semi-circular.

[0007] Preferably, the partition plate has a Z-shaped cross-section, and the bent part of the partition plate near the water inlet pipe has an inclined structure. The adjustment port on the middle surface of the partition plate has a circular structure, and the size of the adjustment port is compatible with the inner cavity of the pressure plate.

[0008] Preferably, the pressure plate has a cylindrical structure, and multiple pressure holes are evenly opened on the arc surface of the pressure plate. The buffer plate has a circular structure, and the dimensions of the inner cavity of the buffer plate and the pressure plate are matched. At the same time, the buffer cylinder fixedly connected to the upper surface of the pressure plate has a cylindrical structure, and the main spring is located inside the buffer cylinder.

[0009] Preferably, the movable plate has a circular structure, the sealing gasket fixedly connected to the lower surface edge of the movable plate has an annular structure, the inner diameter of the sealing gasket is equal to the diameter of the adjustment port, and the valve block has a frustum-shaped structure. The buffer groove opened inside the valve block is adapted to the size of the outer side of the buffer cylinder. At the same time, the positioning rod has a cylindrical structure, and the size of the positioning rod is adapted to the inner cavity of the buffer cylinder.

[0010] Preferably, the valve cover has a U-shaped cross-section, and the sealing plate fixedly connected to the lower end of the valve cover cavity has a square structure. A through-hole is opened on the upper surface of the valve body relative to the position of the sealing plate, and a sealing sleeve is connected to the surface of the sealing plate relative to the position of the valve stem. The valve stem is slidably connected in the sealing sleeve, and a threaded structure is opened at the upper end of the valve stem.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: through the cooperation of the valve body, valve stem, partition plate, moving plate, valve block and regulating port, the pressure reducing valve can be conveniently adjusted in flow, thereby improving the applicability of the pressure reducing valve. Through the cooperation of the pressure dividing plate, buffer plate, buffer cylinder, main spring and positioning rod, the pressure reducing effect of the pressure reducing valve on the fluid can be enhanced, and the impact force when the fluid flows out can be reduced. At the same time, through the cooperation of the valve body, side plate and sealing frame, the pressure reducing valve can be conveniently installed and removed, thereby helping to reduce the difficulty of cleaning the inner wall of the valve body and ensuring the normal operation of the pressure reducing valve. Attached Figure Description

[0012] Figure 1 This is a front view schematic diagram of an embodiment of the present utility model.

[0013] Figure 2 This is a side view of an embodiment of the present utility model.

[0014] Figure 3The utility model discloses an overhead view schematic drawing of an embodiment.

[0015] Figure 4 The utility model discloses an overhead view schematic drawing of an embodiment. Figure 1 The utility model discloses an overhead view schematic drawing of an embodiment.

[0016] In the figure: 1, inlet pipe; 2, side plate; 3, valve body; 4, partition plate; 5, pressure distribution plate; 6, buffer plate; 7, valve block; 8, moving plate; 9, outlet pipe; 10, sealing plate; 11, sealing sleeve; 12, valve cover; 13, valve rod; 14, buffer cylinder; 15, adjusting port; 16, main spring; 17, sealing gasket; 18, positioning rod. Specific implementation

[0017] Referring to Figures 1 to 4 The utility model provides a pressure reducing valve with flow regulating mechanism, include: valve body 3, the both sides of valve body 3 are fixedly connected inlet pipe 1 and outlet pipe 9 respectively through side plate 2, and the middle part of valve body 3 inner chamber is fixedly connected partition plate 4, and the upper surface of valve body 3 is fixedly connected valve cover 12, and the top of valve cover 12 inner chamber is screwed and is connected the upper end of valve rod 13 through screwing hole, and the lower end of valve rod 13 is fixedly connected moving plate 8, and the lower surface of moving plate 8 is fixedly connected valve block 7, and the position of partition plate 4 surface is corresponding to set up adjusting port 15 to valve block 7, and the inside of valve block 7 is set up buffer groove, and buffer groove is fixedly connected positioning rod 18, and the lower end of positioning rod 18 is fixedly connected one end of main spring 16, and the other end of main spring 16 is fixedly connected buffer plate 6, and the upper surface of buffer plate 6 is corresponding to connect buffer cylinder 14 to the position of buffer groove, and buffer plate 6 is slidably connected in the inside of pressure distribution plate 5 through adjusting port 15, and pressure distribution plate 5 is fixedly connected in the lower surface of partition plate 4.

[0018] In this embodiment, fluid flows into the inner cavity of valve body 3 from inlet pipe 1. The space inside valve body 3 is larger than that inside inlet pipe 1, thus helping to reduce the fluid velocity and pressure. After passing through the regulating port 15 of partition plate 4, the fluid flows out from outlet pipe 9. When the fluid flows into the inner cavity of pressure dividing plate 5 through regulating port 15, it impacts the surface of buffer plate 6, causing buffer plate 6 to drive the fixedly connected buffer cylinder 14 to move downwards synchronously. The main spring 16, which is fixedly connected between buffer plate 6 and positioning rod 18, is stretched until the restoring force of main spring 16 is equal to the impact force of the fluid. At this point, buffer plate 6 can remain stable inside pressure dividing plate 5, and the fluid blocked by buffer plate 6 will flow out from the pressure dividing hole on the side of pressure dividing plate 5, thereby effectively reducing the fluid flow through outlet pipe 9. The pressure is adjusted to achieve a pressure reduction effect. When the pressure reducing valve needs to adjust the upper limit of the flow rate, the valve stem 13 is rotated. The valve stem 13 will drive the fixedly connected moving plate 8, valve block 7 and positioning rod 18 to rotate and move down synchronously. The positioning rod 18 can assist in rotating the buffer plate 6 through the main spring 16 and the friction-connected buffer cylinder 14. Under the push of the buffer cylinder 14, the buffer plate 6 can move down synchronously. When the valve block 7 is inserted into the adjustment port 15, the opening area of ​​the adjustment port 15 will also change accordingly. Then, by changing the actual opening area of ​​the adjustment port 15, the upper limit of the flow rate of the pressure reducing valve can be flexibly adjusted. When the inner cavity of the valve body 3 needs to be cleaned, the bolts at both ends of the valve body 3 can be removed to release the fixed connection between the side plate 2 and the valve body 3, thereby reducing the difficulty of cleaning the inside of the valve body 3.

[0019] As a preferred embodiment, the valve body 3 has a square cylindrical structure, and two sets of sealing grooves are symmetrically opened on the end faces of both ends of the valve body 3. Both sets of sealing grooves have a U-shaped structure, and a sealing layer is fixedly connected inside the sealing groove. At the same time, two sets of side plates 2 are fixedly connected to both ends of the valve body 3 by bolts.

[0020] In this embodiment, as Figure 1 The sealing layer is made of soft rubber, which helps to enhance the sealing at the connection between the side plate 2 and the valve body 3. The split structure between the side plate 2 and the valve body 3 can also effectively reduce the difficulty of cleaning the inner cavity of the valve body 3 and extend the service life of the pressure reducing valve. At the same time, the two sets of side plates 2 are fixedly connected to the inlet pipe 1 and the outlet pipe 9 respectively, which improves the convenience of the overall installation and removal of the pressure reducing valve.

[0021] In a preferred embodiment, the side plate 2 has a square structure, and the sealing frame is connected to the position of the side plate 2 relative to the sealing groove. The dimensions of the sealing frame and the sealing groove are compatible. The sealing frame has a U-shaped structure, and multiple sets of extrusion strips are fixedly connected parallel to each other at equal intervals along the circumference of the sealing frame surface. At the same time, the extrusion strips have a square structure and the cross-section of the extrusion strips is semi-circular.

[0022] In this embodiment, as Figure 1, the size of the sealing frame and the sealing groove are matched, which can help to enhance the sealing performance of the connection between the side plate 2 and the valve body 3, and the setting of the extrusion strip can further enhance the sealing performance of the contact surface between the sealing frame and the sealing layer, thereby enhancing the overall sealing effect of the pressure reducing valve.

[0023] As a preferred embodiment, the cross section of the partition plate 4 is Z-shaped, the bent part of the partition plate 4 near one end of the water inlet pipe 1 is inclined, the adjusting opening 15 on the surface of the middle part of the partition plate 4 is circular, and the size of the adjusting opening 15 and the inner cavity of the pressure distribution plate 5 are matched.

[0024] In this embodiment, as shown in Figure 1 and Figure 4 , the structure of the partition plate 4 can not only adjust the fluid, but also help to reduce the impact force of the fluid, and the size of the adjusting opening 15 and the inner cavity of the pressure distribution plate 5 are matched, which can facilitate the movement of the buffer plate 6 in the adjusting opening 15 and the inner cavity of the pressure distribution plate 5.

[0025] As a preferred embodiment, the pressure distribution plate 5 is cylindrical, the arc surface of the pressure distribution plate 5 is uniformly provided with a plurality of pressure distribution holes, the buffer plate 6 is circular, the size of the buffer plate 6 and the inner cavity of the pressure distribution plate 5 are matched, the buffer cylinder 14 fixedly connected to the upper surface of the pressure distribution plate 5 is cylindrical, and the main spring 16 is located inside the buffer cylinder 14.

[0026] In this embodiment, as shown in Figure 1 and Figure 4 , the pressure distribution holes on the side surface of the pressure distribution plate 5 allow the fluid to flow out from other positions when it is blocked by the buffer plate 6, thereby increasing the resistance of the fluid flow and enhancing the pressure reducing effect, and the setting of the main spring 16 allows the position of the buffer plate 6 to be automatically adjusted flexibly according to the impact pressure of the fluid, thereby ensuring the overall pressure reducing effect of the pressure reducing valve.

[0027] As a preferred embodiment, the moving plate 8 is circular, the sealing gasket 17 fixedly connected to the edge of the lower surface of the moving plate 8 is annular, the inner diameter of the sealing gasket 17 is equal to the diameter of the adjusting opening 15, the valve block 7 is circular truncated cone-shaped, the size of the buffer groove in the valve block 7 and the outer surface of the buffer cylinder 14 are matched, and the positioning rod 18 is cylindrical, the size of the positioning rod 18 and the inner cavity of the buffer cylinder 14 are matched.

[0028] In this embodiment, as shown in Figure 1 , Figure 3 and Figure 4The sealing gasket 17 is made of soft rubber. When the moving plate 8 is attached to the surface of the partition plate 4 and the adjustment port 15 is closed, it can help enhance the sealing performance at the connection between the moving plate 8 and the surface of the partition plate 4. At the same time, the size settings of the inner cavity of the valve block 7, the buffer cylinder 14 and the positioning rod 18 can help enhance the stability when the valve block 7 and the buffer plate 6 move relative to each other. Meanwhile, the frictional resistance on the inner and outer sides of the buffer cylinder 14 can also help enhance the fluid blocking effect.

[0029] In a preferred embodiment, the valve cover 12 has a U-shaped cross-section, and the sealing plate 10 fixedly connected to the lower end of the inner cavity of the valve cover 12 has a square structure. A through-hole is opened on the upper surface of the valve body 3 relative to the position of the sealing plate 10, and a sealing sleeve 11 is connected to the surface of the sealing plate 10 relative to the position of the valve stem 13. The valve stem 13 is slidably connected in the sealing sleeve 11, and a threaded structure is opened at the upper end of the valve stem 13.

[0030] In this embodiment, as Figure 1 The sealing sleeve 11 is made of soft rubber, which helps to enhance the sealing performance at the connection between the valve stem 13 and the sealing plate 10, reducing the chance of fluid flowing into the inner cavity of the valve cover 12. The sealing plate 10 helps to enhance the stability of the valve stem 13 when it moves.

[0031] The pressure reducing valve with flow regulating mechanism of this utility model, through the cooperation of the partition plate 4, the movable plate 8, the valve block 7, the valve stem 13, the buffer plate 6, the pressure dividing plate 5, the buffer cylinder 14, the main spring 16 and the positioning rod 18, enables the pressure reducing valve to flexibly regulate the flow rate of the fluid, enhance the pressure reducing effect of the pressure reducing valve, reduce the impact force of the fluid, and facilitate the easy assembly and disassembly between the valve body 3 and the side plate 2, thereby reducing the difficulty of cleaning the inner cavity of the valve body 3 and extending the service life of the pressure reducing valve.

Claims

1. A pressure reducing valve with a flow regulating mechanism, comprising: The utility model relates to a water heater valve body, it is characterized by: water inlet pipe (1) and water outlet pipe (9) are fixedly connected respectively through side plate (2) on both sides of valve body (3), and the middle part of the inner chamber of valve body (3) is fixedly connected with the partition plate (4), and the upper surface of valve body (3) is fixedly connected with valve cover (12), the top of the inner chamber of valve cover (12) is screwed with the upper end of valve stem (13) through screwing hole, the lower end of valve stem (13) is fixedly connected with moving plate (8), and the lower surface of moving plate (8) is fixedly connected with valve block (7), and the position corresponding to valve block (7) on the surface of partition plate (4) is provided with adjusting port (15), and the inside of valve block (7) is provided with buffer groove, and the buffer groove is fixedly connected with positioning rod (18), one end of main spring (16) is fixedly connected with the lower end of positioning rod (18), the other end of main spring (16) is fixedly connected with buffer plate (6), and the upper surface of buffer plate (6) is connected with buffer cylinder (14) corresponding to the position of buffer groove, buffer plate (6) is slidably connected in the inside of partition plate (5) through adjusting port (15), and partition plate (5) is fixedly connected on the lower surface of partition plate (4).

2. The pressure reducing valve with flow regulating mechanism according to claim 1, wherein The valve body (3) is a square cylindrical structure, the end faces of the two ends of the valve body (3) are symmetrically provided with two groups of sealing grooves, and the two groups of sealing grooves are all in the shape of a mouth, and a sealing layer is fixedly connected in the sealing groove, and the two ends of the valve body (3) are fixedly connected with the two groups of side plates (2) through bolts.

3. The pressure reducing valve with flow regulating mechanism according to claim 1, wherein The side plate (2) is a square structure, and the surface of the side plate (2) is connected with a sealing frame corresponding to the position of the sealing groove, and the size of the sealing frame and the sealing groove is matched, the sealing frame is in the shape of a back, and a plurality of extrusion strips are fixedly connected on the surface of the sealing frame along the direction of the ring width at equal intervals, and the extrusion strips are in the shape of a mouth, and the cross section of the extrusion strip is in the shape of a semicircle.

4. The pressure reducing valve with flow regulating mechanism according to claim 1, wherein The cross section of the partition plate (4) is in the shape of Z, and the bending part near the end of the water inlet pipe (1) of the partition plate (4) is in the shape of an inclined plane, and the adjusting port (15) provided on the surface of the middle part of the partition plate (4) is in the shape of a circle, and the size of the adjusting port (15) and the inner chamber of the partition plate (5) is matched.

5. The pressure reducing valve with flow regulating mechanism according to claim 1, wherein The partition plate (5) is in the shape of a cylinder, a plurality of partition holes are uniformly provided on the circular arc surface of the partition plate (5), the buffer plate (6) is in the shape of a circle, the size of the buffer plate (6) and the inner chamber of the partition plate (5) is matched, and the buffer cylinder (14) fixedly connected on the upper surface of the partition plate (5) is in the shape of a cylinder, and the main spring (16) is located inside the buffer cylinder (14).

6. The pressure reducing valve with flow regulating mechanism according to claim 1, wherein The moving plate (8) is in the shape of a circle, the sealing gasket (17) fixedly connected on the lower surface of the moving plate (8) is in the shape of a ring, the inner diameter of the sealing gasket (17) is equal to the diameter of the adjusting port (15), the valve block (7) is in the shape of a circular truncated cone, the size of the buffer groove provided in the valve block (7) and the outer side surface of the buffer cylinder (14) is matched, the positioning rod (18) is in the shape of a cylinder, and the size of the positioning rod (18) and the inner chamber of the buffer cylinder (14) is matched.

7. The pressure reducing valve with flow regulating mechanism according to claim 1, wherein The cross section of the valve cover (12) is a square structure, the lower end of the valve cover (12) is fixedly connected with a sealing plate (10), the upper surface of the valve body (3) is provided with a through hole corresponding to the position of the sealing plate (10), the surface of the sealing plate (10) is connected with a sealing sleeve (11) corresponding to the position of the valve rod (13), the valve rod (13) is slidably connected in the sealing sleeve (11), and the upper end of the valve rod (13) is provided with a threaded structure.

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