A modulating pump control valve

Abstract

The utility model relates to pipe force valve technical field, concretely is a kind of regulating formula pump control valve, including pipeline, the outer wall of pipeline is fixedly installed with transmission rod, the connecting end of transmission rod is rotatably installed with big valve clack, the outer wall of transmission rod is rotatably installed with small valve clack, the top of pipeline is fixedly installed with fixed base by bolt, the top of fixed base is fixedly installed with oil cylinder, the inner wall of oil cylinder is slidably installed with piston rod, the bottom end of piston rod is rotatably installed with hinge, the bottom end of hinge is rotatably installed with connecting seat, the utility model is discharged by the multistage different rate of oil cylinder, absorbs most water hammer pressure, avoids the damage of water hammer pressure to pipeline and pipe force valve clack, also reduces the redundant device of traditional pump outlet section simultaneously, and overall structure integration degree is high, reduces energy consumption and maintenance workload, improves the reliability and efficiency of system.

Description

Technical Field

[0001] This utility model relates to the field of pipe force valve technology, specifically a regulating pump control valve. Background Technology

[0002] The pipe-operated valve is developed based on multi-functional hydraulic control valves and hydraulic butterfly valves. Its main functions include slow opening and closing, check valve, and water hammer prevention. It is a replacement product for hydraulic butterfly valves and multi-functional hydraulic control valves, and an upgraded product of hydraulic self-operated valves. It retains all the functions and advantages of hydraulic automatic valves, and also has the characteristics of small size and light weight of butterfly structure, while further improving its reliability and media adaptability. It can adopt diaphragm type and piston type structure respectively, but because it is required that the pump outlet can be quickly closed to cut off the backflow of liquid when the pump stops.

[0003] To ensure the safe and normal operation of the pump pipeline system, multiple devices need to be installed at the pump outlet section. However, the pump outlet section has numerous devices, high energy consumption, and many potential failure points, resulting in a large maintenance workload. A failure in any one of these devices will prevent the entire system from functioning properly, affecting the overall efficiency of the pump pipeline system. Therefore, we propose a regulating pump control valve. Utility Model Content

[0004] The purpose of this invention is to solve the problem of valve damage caused by excessive water hammer in the prior art and to reduce the need for auxiliary pipeline devices, and to provide a simple regulating pump control valve that is waterproof against water hammer and has a slow-closing structure.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A regulating pump control valve includes a pipeline. A transmission rod is fixedly installed on the outer wall of the pipeline. A large valve disc is rotatably installed at the connecting end of the transmission rod, and a small valve disc is rotatably installed on the outer wall of the transmission rod. A fixed seat is fixedly installed at the top of the pipeline by bolts. A hydraulic cylinder is fixedly installed at the top of the fixed seat. A piston rod is slidably installed on the inner wall of the hydraulic cylinder. A hinge is rotatably installed at the bottom end of the piston rod, and a connecting seat is rotatably installed at the bottom end of the hinge. The outer wall of the hydraulic cylinder has a bottom slow oil hole, a middle fast oil hole, and a top slow oil hole. The surfaces of the bore and the top slow oil hole are all provided with return ball cavities. Anti-backflow balls are provided at the connection points between the bottom slow oil hole, the middle fast oil hole, and the top slow oil hole and the oil cylinder. A return spring is provided between the top of the piston rod and the oil cylinder. An oil tank is fixedly installed on the outer side of the top of the pipeline. Three shut-off valves are respectively opened on the outer wall of the oil tank. The three shut-off valves are connected to the bottom slow oil hole, the middle fast oil hole, and the top slow oil hole through oil collection pipes. A pump is provided on the outer wall of the oil tank. An oil return hole is opened on the outer wall of the top of the oil cylinder. The pump is connected to the oil return hole through an oil return pipe.

[0007] Preferably, the inlet end of the pipe is connected to an external water pump, and the connecting seat and the small valve disc are fixedly connected.

[0008] Preferably, the three anti-backflow spheres are located on the movement trajectory of the piston rod, the top of the return ball cavity is semi-arc-shaped, and the semi-arc shape of the return ball cavity is equal to the diameter of the three anti-backflow spheres, and the top of the return ball cavity has a certain oblique angle.

[0009] Preferably, the shut-off valves corresponding to the bottom slow oil hole, the middle fast oil hole, and the top slow oil hole are used to adjust the movement speed of the piston rod; wherein, the shut-off valve corresponding to the bottom slow oil hole has a smaller opening, which is the initial closed slow speed section; the shut-off valve corresponding to the middle fast oil hole has the largest opening, which is the middle stage fast movement section; and the shut-off valve corresponding to the top slow oil hole has the same opening as the shut-off valve corresponding to the bottom slow oil hole, which is the final slow closing section, thereby realizing multi-stage speed control.

[0010] Preferably, there are three oil receiving pipes, and the three shut-off valves are independently connected to the bottom slow oil hole, the middle fast oil hole and the top slow oil hole, respectively, to precisely control the oil flow and pressure of each oil hole and adjust the movement trajectory and speed of the piston rod.

[0011] Preferably, a hydraulic plate is fixedly mounted on the top of the piston rod.

[0012] By employing the above technical solution, this utility model provides a regulating pump control valve. It possesses at least the following beneficial effects:

[0013] 1. This utility model absorbs most of the water hammer pressure by discharging water at different rates through multiple stages of the oil cylinder, avoiding damage to the pipeline and valve disc caused by water hammer pressure. It also reduces the redundant devices in the outlet section of the traditional pump. The overall structure has a high degree of integration, reduces energy consumption and maintenance workload, and improves the reliability and efficiency of the system.

[0014] 2. By setting up an anti-backflow ball, this utility model effectively prevents hydraulic oil from seeping into the pipeline through the oil cylinder, ensuring the cleanliness of the conveyed medium and avoiding oil contamination. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0016] Figure 1 This is a front sectional view of the overall structure of this utility model;

[0017] Figure 2 This is a right-side sectional view of the overall structure of this utility model;

[0018] Figure 3 This is an enlarged schematic diagram of point A in this embodiment.

[0019] In the diagram: 1. Pipeline; 2. Transmission rod; 3. Large valve disc; 4. Small valve disc; 5. Fixed seat; 61. Oil cylinder; 7. Piston rod; 8. Hinge; 9. Connecting seat; 6201. Bottom slow oil hole; 6202. Middle fast oil hole; 6203. Top slow oil hole; 6204. Return ball cavity; 6205. Anti-backflow ball; 63. Return spring; 64. Oil tank; 65. Shut-off valve; 66. Oil collection pipe; 67. Pump; 68. Return oil pipe; 69. Return oil hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1

[0022] A type of regulating pump control valve, such as Figures 1-3 As shown, the system includes a pipe 1, a transmission rod 2 fixedly installed on the outer wall of the pipe 1, a large valve disc 3 rotatably installed at the connecting end of the transmission rod 2, a small valve disc 4 rotatably installed on the outer wall of the transmission rod 2, a fixed seat 5 fixedly installed at the top of the pipe 1 by bolts, a hydraulic cylinder 61 fixedly installed at the top of the fixed seat 5, a piston rod 7 slidably installed on the inner wall of the hydraulic cylinder 61, a hinge 8 rotatably installed at the bottom end of the piston rod 7, a connecting seat 9 rotatably installed at the bottom end of the hinge 8, and a bottom slow oil hole 6201, a middle fast oil hole 6202, and a top slow oil hole 6203 respectively opened on the outer wall of the hydraulic cylinder 61. The surfaces of the bottom slow oil hole 6201, the middle fast oil hole 6202, and the top slow oil hole 6203 are all provided with... Anti-backflow balls 6205 are provided at the connection points of the return ball cavity 6204, the bottom slow oil hole 6201, the middle fast oil hole 6202, and the top slow oil hole 6203 with the oil cylinder 61. A return spring 63 is provided between the top of the piston rod 7 and the oil cylinder 61. An oil tank 64 is fixedly installed on the outer side of the top of the pipeline 1. Three shut-off valves 65 are respectively opened on the outer wall of the oil tank 64. The three shut-off valves 65 are connected to the bottom slow oil hole 6201, the middle fast oil hole 6202, and the top slow oil hole 6203 through an oil collection pipe 66. A pump 67 is provided on the outer wall of the oil tank 64. An oil return hole 69 is opened on the outer wall of the top of the oil cylinder 61. The pump 67 and the oil return hole 69 are connected through an oil return pipe 68.

[0023] The inlet of pipe 1 is connected to an external water pump, and the connecting seat 9 is fixedly connected to the small valve disc 4.

[0024] The three anti-backflow balls 6205 are located on the movement trajectory of the piston rod 7. The top of the return ball cavity 6204 is set in a semi-circular shape, and the semi-circular shape of the return ball cavity 6204 is equal to the diameter of the three anti-backflow balls 6205. The top of the return ball cavity 6204 has a certain angle.

[0025] The shut-off valves 65 corresponding to the bottom slow oil hole 6201, the middle fast oil hole 6202, and the top slow oil hole 6203 are used to adjust the movement speed of the piston rod 7. Among them, the shut-off valve 65 corresponding to the bottom slow oil hole 6201 has a smaller opening, which is the initial closed slow speed section. The shut-off valve 65 corresponding to the middle fast oil hole 6202 has the largest opening, which is the middle stage of fast movement. The shut-off valve 65 corresponding to the top slow oil hole 6203 has the same opening as the shut-off valve 65 corresponding to the bottom slow oil hole 6201, which is the end slow closing section, thereby realizing multi-stage speed control.

[0026] There are three oil receiving pipes 66. The three shut-off valves 65 are respectively connected to the bottom slow oil hole 6201, the middle fast oil hole 6202 and the top slow oil hole 6203, which are independently connected to the three oil receiving pipes 66. They are used to precisely control the oil flow and pressure of each oil hole and adjust the movement trajectory and speed of the piston rod 7.

[0027] A hydraulic plate is fixedly installed on the top of the piston rod 7.

[0028] When the adjustable pump control valve of this utility model is in use, the water pump starts and water begins to flow into pipe 1. The inlet end of pipe 1 is filled first, and the water flow first acts on the small valve disc 4 with a smaller area, pushing it to slowly rise around the transmission rod 2. As the water pressure at the inlet end gradually increases, the large valve disc 3 will rotate upward and open around the connecting end of the transmission rod 2. The rise of the small valve disc 4 drives the hydraulic plate on the piston rod 7 to start moving upward in the oil cylinder 61, first opening the smaller opening of the shut-off valve 65 corresponding to the bottom slow oil hole 6201. At this time, the anti-backflow ball 6205 on the inner wall of the bottom slow oil hole 6201 will release pressure and roll into the return ball cavity 6204. Because the amount of oil between the bottom slow oil hole 6201 and the piston rod 7 is small, the piston rod 7 moves slowly but the process takes a short time. After passing the bottom slow oil hole 6201, the anti-backflow ball 6205 will roll down under gravity and re-block the oil hole; the shut-off valve 65 with the largest opening corresponding to the middle fast oil hole 6202 will open again. At this time, there is a large amount of oil between the bottom slow oil hole 6201 and the piston rod 7, and the opening of the shut-off valve 65 is large, so the piston rod 7 moves quickly. At this time, the large valve disc 3 connected to the transmission rod 2 also opens quickly to most of its opening, rapidly establishing the main flow channel and reducing the starting load of the pump; finally, the piston rod 7 continues to move upward to near the top of its stroke, passing the middle fast oil hole 6202, and opening the shut-off valve 65 with a smaller opening corresponding to the top slow oil hole 6203. The hydraulic oil flows back through the top slow oil hole 6203, and the speed slows down again, allowing the valve to smoothly reach the fully open position, and the return spring 63 provides the holding force. After the valve is fully open, the system enters a stable operating state.

[0029] After the water pump is turned off, the water flow inertia causes a backflow tendency. Pump 67 pumps oil from tank 64 into cylinder 61. The operation of cylinder 61 drives piston rod 7 to return to its original position. At this time, the return spring 63 provides downward thrust to piston rod 7. The hydraulic plate at the top of piston rod 7 compresses the air pressure inside cylinder 61 downwards. The compressed air pressure is first discharged through the slow oil hole 6203 at the top from the oil receiving pipe 66 and the smaller opening shut-off valve 65 to tank 64. Piston rod 7 causes the connected small valve disc 4 to descend slowly. After the piston rod 7 passes the top slow oil hole 6203, the compressed gas will be discharged from the middle fast oil hole 6202 of the corresponding larger opening of the shut-off valve 65. At this time, the piston rod 7 drives the small valve disc 4 to move down quickly, closing about 80%-95% of the opening in a short time, effectively cutting off the large backflow of water. When the large valve disc 3 is closed to about 5% of the opening, the piston rod 7 moves down to the working area of ​​the bottom slow oil hole 6201. The bottom slow oil hole 6201 slowly discharges the remaining compressed gas, and the remaining small amount of water flow is slowly cut off. The enormous pressure generated by the inertia of the water flow, i.e., water hammer, is gradually absorbed and dissipated by this slow closing process, thereby avoiding damage to the valve and pipeline 1 by the shock wave. By setting the anti-backflow ball 6205, hydraulic oil is effectively prevented from seeping into the pipeline 1 through the cylinder 61, ensuring the cleanliness of the conveyed medium and avoiding oil contamination. At the same time, through the multi-stage discharge at different rates of the cylinder 61, most of the water hammer pressure is absorbed, avoiding damage to the pipeline 1 and the valve disc by the water hammer pressure. It also reduces the redundant devices in the traditional pump outlet section. The overall structure has a high degree of integration, reduces energy consumption and maintenance workload, and improves the reliability and efficiency of the system.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A regulating pump control valve, comprising a pipe (1), wherein a transmission rod (2) is fixedly installed on the outer wall of the pipe (1), a large valve disc (3) is rotatably installed at the connecting end of the transmission rod (2), and a small valve disc (4) is rotatably installed on the outer wall of the transmission rod (2), characterized in that: A fixing seat (5) is fixedly installed on the top of the pipe (1) by bolts. A cylinder (61) is fixedly installed on the top of the fixing seat (5). A piston rod (7) is slidably installed on the inner wall of the cylinder (61). A hinge (8) is rotatably installed on the bottom end of the piston rod (7). A connecting seat (9) is rotatably installed on the bottom end of the hinge (8). The outer wall of the cylinder (61) is provided with a bottom slow oil hole (6201), a middle fast oil hole (6202), and a top slow oil hole (6203). The surfaces of the bottom slow oil hole (6201), the middle fast oil hole (6202), and the top slow oil hole (6203) are all provided with a ball return cavity (6204). The bottom slow oil hole (6201), the middle fast oil hole (6202), and the top slow oil hole (6203) are all provided with a ball return cavity (6204). An anti-backflow ball (6205) is provided at the connection between the oil hole (6203) and the oil cylinder (61). A return spring (63) is provided between the top of the piston rod (7) and the oil cylinder (61). An oil tank (64) is fixedly installed on the outer side of the top of the pipe (1). Three shut-off valves (65) are respectively opened on the outer wall of the oil tank (64). The three shut-off valves (65) are connected to the bottom slow oil hole (6201), the middle fast oil hole (6202) and the top slow oil hole (6203) through an oil collection pipe (66). A pump (67) is provided on the outer wall of the oil tank (64). A return oil hole (69) is opened on the outer wall of the top of the oil cylinder (61). The pump (67) and the return oil hole (69) are connected through a return oil pipe (68).

2. The adjustable pump control valve according to claim 1, characterized in that: The inlet of the pipe (1) is connected to an external water pump, and the connecting seat (9) is fixedly connected to the small valve disc (4).

3. The adjustable pump control valve according to claim 1, characterized in that: The three anti-backflow spheres (6205) are respectively located on the movement trajectory of the piston rod (7). The top of the return ball cavity (6204) is set in a semi-arc shape, and the semi-arc shape of the return ball cavity (6204) is equal to the diameter of the three anti-backflow spheres (6205). The top of the return ball cavity (6204) has a certain oblique angle.

4. The adjustable pump control valve according to claim 1, characterized in that: The shut-off valves (65) corresponding to the bottom slow oil hole (6201), the middle fast oil hole (6202), and the top slow oil hole (6203) are used to adjust the movement speed of the piston rod (7). Among them, the shut-off valve (65) corresponding to the bottom slow oil hole (6201) has a smaller opening, which is the initial closed slow speed section. The shut-off valve (65) corresponding to the middle fast oil hole (6202) has the largest opening, which is the middle stage fast movement section. The shut-off valve (65) corresponding to the top slow oil hole (6203) has the same opening as the shut-off valve (65) corresponding to the bottom slow oil hole (6201), which is the end slow closing section, thereby realizing multi-stage speed control.

5. A regulating pump control valve according to claim 1, characterized in that: The number of oil receiving pipes (66) is three, and the three shut-off valves (65) are respectively connected to the bottom slow oil hole (6201), the middle fast oil hole (6202) and the top slow oil hole (6203) independently to the three oil receiving pipes (66).

6. A regulating pump control valve according to claim 1, characterized in that: A hydraulic plate is fixedly installed on the top of the piston rod (7).

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