Pressure reducing valve capable of being automatically adjusted

Abstract

The utility model discloses a pressure reducing valve capable of being automatically adjusted, which belongs to the technical field of pressure reducing valves and comprises a pressure reducing valve body, a valve seat is fixed in the middle of the pressure reducing valve body, a circulation groove is arranged inside the pressure reducing valve body, an insertion groove communicated with the circulation groove is arranged inside the valve seat, and a valve cover body is detachably connected to the top end of the valve seat. A valve element tightly matched with the inserting groove is fixed to the output end of the electric hydraulic telescopic rod, and a pressure detector electrically connected with the PLC is installed at the bottom of the valve element. The valve element is driven by the electric hydraulic telescopic rod to move up and down for adjustment, the valve element can move out of the circulation groove, and pressure relief of different degrees can be achieved through the moving-out range of the circulation groove; the valve cover body is detached from the valve seat, and the valve element can be pulled out of the slot through the slot, so that the valve element can be conveniently detached from the valve seat by directly pulling the valve cover body upwards, the assembly and disassembly efficiency of the valve element is effectively improved, and the maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pressure reducing valves, and in particular relates to an automatically adjustable pressure reducing valve. Background Art

[0002] During peak periods in the water supply area, the factory pressure is 0.36MPa, which can meet the terminal pressure requirements. During low-peak periods, the factory pressure reaches 0.26MPa to meet the pressure requirements. In order to reduce leakage and reduce the risk of pipe bursts, pressure reducing valves are installed on some branches. In order to control and balance the pressure of the liquid in the pipeline, a pressure reducing valve is usually required; the pressure reducing valve reduces the inlet pressure to a certain required outlet pressure through adjustment.

[0003] For example, Chinese patent publication number CN221348121U discloses a pressure reducing valve that is easy to adjust pressure, comprising a pressure reducing valve body, second mounting flanges fixedly mounted on both sides of the pressure reducing valve body, a first mounting flange disposed on one side of the second mounting flange, a telescopic tube fixedly connected between the first mounting flange and the second mounting flange, a diaphragm air chamber fixedly mounted on the top of the pressure reducing valve body, a cylinder mounted on the top of the diaphragm air chamber, a telescopic rod fixedly connected to the output end of the cylinder, a pressure detector mounted on one side of the telescopic rod, and a valve stem mounted on the bottom end of the telescopic rod. The pressure reducing valve that is easy to adjust pressure is adjusted by a pressure detector, and the setting of the pressure detector can automatically activate the cylinder, which drives the valve stem to move up and down for adjustment. The valve core at the bottom of the valve stem can be moved out of the valve port, and the range of movement can achieve different degrees of pressure relief. This structure realizes the function of easy automatic pressure adjustment and solves the problem of inconvenient pressure adjustment.

[0004] The valve core is prone to significant wear after long-term use, but the valve core in the above application is difficult to remove, making it inconvenient to disassemble, replace, and maintain the valve core, and it is also inconvenient to clean the inside of the valve body, making subsequent maintenance inconvenient and affecting maintenance efficiency.

[0005] Therefore, there is a need for an automatically adjustable pressure reducing valve to solve the problems raised in the prior art. Utility Model Content

[0006] The purpose of the present utility model is to provide an automatically adjustable pressure reducing valve to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an automatically adjustable pressure reducing valve, comprising a pressure reducing valve body, a valve seat fixed to the middle of the pressure reducing valve body, a flow groove arranged along the length direction of the pressure reducing valve body provided inside the pressure reducing valve body, a slot connected to the flow groove provided inside the valve seat, a valve cover body detachably connected to the top end of the valve seat, an electric hydraulic telescopic rod and a PLC controller electrically connected to the electric hydraulic telescopic rod are fixed on the top outer wall of the valve cover body, the output shaft of the electric hydraulic telescopic rod extends into the slot, a valve core tightly fitted with the slot is fixed on the output end of the electric hydraulic telescopic rod, and a pressure detector electrically connected to the PLC controller is installed at the bottom of the valve core.

[0008] It should be noted in the solution that a mounting bolt is threadedly connected to the column side wall of the valve cover body, and a threaded hole adapted to the thread of the mounting bolt is opened on the outer wall of the valve seat. There are multiple mounting bolts and the multiple mounting bolts are distributed in a ring.

[0009] It is further worth mentioning that an annular sealing plate is provided inside the valve cover body, and a rubber film is fitted on the surface of the annular sealing plate. A spring is connected between the inner wall of the valve cover body and the annular sealing plate, and the two ends of the spring are respectively fixed to the inner wall of the valve cover body and the top side of the valve seat.

[0010] It should be further explained that a drainage groove is provided inside the pressure reducing valve body, and both ends of the drainage groove are respectively connected to the inner cavity and the slot of the pressure reducing valve body.

[0011] As a preferred embodiment, mounting flanges are fixed at both ends of the pressure reducing valve body, and a plurality of screw holes distributed in a ring shape are opened on the side surface of the mounting flange.

[0012] As a preferred embodiment, the springs are provided in plurality and the plurality of springs are distributed in a ring shape.

[0013] Compared with the prior art, the automatically adjustable pressure reducing valve provided by the present invention has at least the following beneficial effects:

[0014] (1) The pressure detector can be used to detect the pressure of the water flowing through the circulation groove. Then, the electric hydraulic telescopic rod can be automatically started to work according to the cooperation of the pressure detector and the PLC controller. The electric hydraulic telescopic rod drives the valve core to move up and down for adjustment. The valve core can be moved out of the circulation groove, thereby adjusting the flow area of ​​the circulation groove through the valve core. Different degrees of pressure relief can be achieved through the range of movement of the circulation groove.

[0015] (2) When the valve core is worn out after long-term use and needs to be replaced and maintained, the valve cover body is removed from the valve seat and the valve core is pulled out from the slot through the provided slot. The valve core can be conveniently removed from the valve seat by directly pulling up the valve cover body, which effectively improves the efficiency of valve core assembly and disassembly, facilitates valve core replacement and maintenance, and improves maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall front view structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the overall cross-sectional structure of the utility model;

[0019] Figure 4 for Figure 3 A in the middle is an enlarged structural diagram;

[0020] Figure 5 for Figure 3 Enlarged structural diagram at point B in the middle.

[0021] In the figure: 1. Pressure reducing valve body; 2. Mounting flange; 3. Screw hole; 4. Valve seat; 5. Mounting bolt; 6. Electric hydraulic telescopic rod; 7. Valve cover body; 8. Flow groove; 9. Slot; 10. Valve core; 11. Pressure detector; 12. Drain groove; 13. Spring; 14. Annular sealing plate. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the embodiments.

[0023] See also Figure 1-5The utility model provides an automatically adjustable pressure reducing valve, comprising a pressure reducing valve body 1, a valve seat 4 is fixed to the middle part of the pressure reducing valve body 1, a flow groove 8 arranged along the length direction of the pressure reducing valve body 1 is provided inside the pressure reducing valve body 1, a slot 9 connected to the flow groove 8 is provided inside the valve seat 4, a valve cover body 7 is detachably connected to the top of the valve seat 4, an electric hydraulic telescopic rod 6 and a PLC controller electrically connected to the electric hydraulic telescopic rod 6 are fixed on the top outer side wall of the valve cover body 7, the output shaft of the electric hydraulic telescopic rod 6 extends into the slot 9, a valve core 10 tightly fitting with the slot 9 is fixed on the output end of the electric hydraulic telescopic rod 6, a pressure detector 11 electrically connected to the PLC controller is installed on the bottom of the valve core 10; when using, the pressure reducing valve body 1 is first installed on the designated equipment, and then it is started to be used. The overpressure detector 11 can be used to detect the pressure of the water flowing through the circulation groove 8, and then the electric hydraulic telescopic rod 6 can be automatically started to work according to the cooperation of the pressure detector 11 and the PLC controller. The electric hydraulic telescopic rod 6 drives the valve core 10 to move up and down for adjustment, and the valve core 10 can be removed from the circulation groove 8, thereby adjusting the flow area of ​​the circulation groove 8 through the valve core 10, and different degrees of pressure relief can be achieved by the degree of movement of the valve core 10; when the valve core 10 is worn out after long-term use and needs to be replaced and maintained, the valve cover body 7 is removed from the valve seat 4, and the valve core 10 can be pulled out of the slot 9 through the provided slot 9, so that the valve cover body 7 can be directly pulled up to conveniently remove the valve core 10 from the valve seat 4, effectively improving the assembly and disassembly efficiency of the valve core 10, facilitating the replacement and maintenance of the valve core 10, and improving maintenance efficiency.

[0024] Further as Figure 1 、 Figure 2 and Figure 3 As shown, it is worth mentioning that a mounting bolt 5 is threadedly connected to the column side wall of the valve cover body 7, and a threaded hole that is adapted to the thread of the mounting bolt 5 is opened on the outer side wall of the valve seat 4. A plurality of mounting bolts 5 are provided, and the plurality of mounting bolts 5 are distributed in a ring shape; during specific work, the valve cover body 7 is fixed to the valve seat 4 or the valve cover body 7 is removed from the valve seat 4 by installing and removing a plurality of mounting bolts 5, and the valve core 10 can be pulled out of the slot 9 through the provided slot 9, so that the valve core 10 can be conveniently removed from the valve seat 4 by directly pulling up the valve cover body 7, thereby effectively improving the installation and disassembly efficiency of the valve core 10, facilitating the replacement and maintenance of the valve core 10, and improving maintenance efficiency.

[0025] Further as Figure 3 and Figure 5As shown, it is worth mentioning that an annular sealing plate 14 is provided inside the valve cover body 7, and a rubber film is fitted on the surface of the annular sealing plate 14. A spring 13 is connected between the inner wall of the valve cover body 7 and the annular sealing plate 14, and the two ends of the spring 13 are respectively fixed to the inner wall of the valve cover body 7 and the top side of the valve seat 4; when the valve cover body 7 is installed on the valve seat 4, the annular sealing plate 14 is pushed tightly to the top side of the valve seat 4 by the provided spring 13, thereby ensuring that the valve cover body 7 has a certain sealing performance when installed on the valve seat 4.

[0026] Further as Figure 3 and Figure 4 As shown, it is worth mentioning that a drainage groove 12 is provided inside the pressure reducing valve body 1, and the two ends of the drainage groove 12 are respectively connected to the inner cavity of the pressure reducing valve body 1 and the slot 9; in specific operation, when the valve core 10 is inserted into the bottom of the slot 9, the accumulated water at the bottom of the slot 9 is discharged through the provided drainage groove 12, ensuring the valve core 10 to adjust the flow area of ​​the flow slot 8 and ensuring different degrees of pressure relief effect.

[0027] This solution has the following working process: when in use, the pressure reducing valve body 1 is first installed on the designated equipment for use, and the pressure detector 11 can be used to detect the water pressure flowing through the circulation groove 8. Then, the pressure detector 11 and the PLC controller can be automatically started to work, and the electric hydraulic telescopic rod 6 is used to drive the valve core 10 to move up and down for adjustment. When the valve core 10 is inserted into the bottom of the slot 9, the accumulated water at the bottom of the slot 9 is discharged through the provided drainage groove 12, and the valve core 10 can be removed from the circulation groove 8, thereby adjusting the flow area of ​​the circulation groove 8 through the valve core 10, and different degrees of pressure relief can be achieved by the degree of removal of the valve core 10; when the valve core 10 is worn out after long-term use and needs to be replaced and maintained, the valve cover body 7 is removed from the valve seat 4 by removing the mounting bolts 5, and the valve core 10 can be pulled out of the slot 9 through the provided slot 9, so that the valve core 10 can be conveniently removed from the valve seat 4 for replacement and maintenance by directly pulling up the valve cover body 7.

[0028] Further as Figure 1 、 Figure 2 and Figure 3 As shown, it is worth mentioning that mounting flanges 2 are fixed at both ends of the pressure reducing valve body 1, and a plurality of screw holes 3 distributed in a ring shape are provided on the side of the mounting flange 2; during specific work, the pressure reducing valve body 1 can be conveniently installed on the designated equipment through the provided mounting flange 2.

[0029] Further as Figure 3 As shown, it is worth mentioning that a plurality of springs 13 are provided and the plurality of springs 13 are distributed in a ring shape; during specific operation, the sealing effect of the annular sealing plate 14 is ensured by the plurality of springs 13 provided.

[0030] In summary: the valve core 10 is driven to move up and down by the electric hydraulic telescopic rod 6, and the valve core 10 can be removed from the circulation groove 8, so that the flow area of ​​the circulation groove 8 is adjusted by the valve core 10, and different degrees of pressure relief can be achieved through the range of movement of the circulation groove 8; when the valve core 10 is worn out after long-term use and needs to be replaced and maintained, the valve cover body 7 is removed from the valve seat 4, and the valve core 10 is pulled out from the slot 9 through the provided slot 9, so that the valve cover body 7 can be directly pulled up to conveniently remove the valve core 10 from the valve seat 4, thereby effectively improving the assembly and disassembly efficiency of the valve core 10, facilitating the replacement and maintenance of the valve core 10, and improving maintenance efficiency.

[0031] The electric hydraulic telescopic rod 6, PLC controller and pressure detector 11 can be purchased on the market. The electric hydraulic telescopic rod 6, PLC controller and pressure detector 11 are equipped with a power supply. They are mature technologies in this field and have been fully disclosed, so they are not repeated in the specification.

Claims

1. An automatically adjustable pressure reducing valve, comprising a pressure reducing valve body (1), characterized in that: A valve seat (4) is fixed in the middle of the pressure reducing valve body (1), a flow groove (8) arranged along the length direction of the pressure reducing valve body (1) is provided inside the pressure reducing valve body (1), a slot (9) connected to the flow groove (8) is provided inside the valve seat (4), a valve cover body (7) is detachably connected to the top end of the valve seat (4), an electric hydraulic telescopic rod (6) and a PLC controller electrically connected to the electric hydraulic telescopic rod (6) are fixed on the outer side wall of the top end of the valve cover body (7), the output shaft of the electric hydraulic telescopic rod (6) extends into the slot (9), a valve core (10) tightly fitted with the slot (9) is fixed on the output end of the electric hydraulic telescopic rod (6), and a pressure detector (11) electrically connected to the PLC controller is installed at the bottom of the valve core (10).

2. The automatically adjustable pressure reducing valve according to claim 1, characterized in that: The column side wall of the valve cover body (7) is threadedly connected with a mounting bolt (5), and the outer side wall of the valve seat (4) is provided with a threaded hole adapted to the thread of the mounting bolt (5). The mounting bolts (5) are provided in plurality and the plurality of mounting bolts (5) are distributed in a ring shape.

3. The automatically adjustable pressure reducing valve according to claim 2, characterized in that: An annular sealing plate (14) is provided inside the valve cover body (7), and a rubber film is fitted on the surface of the annular sealing plate (14). A spring (13) is connected between the inner wall of the valve cover body (7) and the annular sealing plate (14), and the two ends of the spring (13) are respectively fixed to the inner wall of the valve cover body (7) and the top side surface of the valve seat (4).

4. The automatically adjustable pressure reducing valve according to claim 1, characterized in that: A drainage groove (12) is provided inside the pressure reducing valve body (1), and two ends of the drainage groove (12) are respectively connected to the inner cavity of the pressure reducing valve body (1) and the slot (9).

5. The automatically adjustable pressure reducing valve according to claim 4, characterized in that: Mounting flanges (2) are fixed at both ends of the pressure reducing valve body (1), and a plurality of screw holes (3) distributed in an annular shape are provided on the side surface of the mounting flange (2).

6. The automatically adjustable pressure reducing valve according to claim 3, characterized in that: The springs (13) are provided in plurality and the plurality of springs (13) are distributed in an annular shape.

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