High-flow circulating pump control system

Abstract

The utility model belongs to the technical field of high-flow circulating pumps, and particularly relates to a high-flow circulating pump control system. Comprising a circulating pump, a circulating motor, a hydraulic control reversing valve, a manual reversing valve, a two-way valve I, a two-way valve II, a one-way valve and a shuttle valve, the oil outlet end of the circulating pump communicates with the oil inlet end of the first two-way valve on the left side, and the oil outlet end of the first two-way valve communicates with the oil inlet end of the second two-way valve and the oil inlet end of the circulating motor. The oil outlet end of the circulating motor communicates with the oil inlet end of the second two-way valve on the right side and the oil inlet end of the first two-way valve on the right side, and the oil outlet end of the first two-way valve on the right side communicates with the oil return end of the circulating pump. According to the utility model, advantages of high integration level and small size space are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-flow circulation pumps, and in particular relates to a high-flow circulation pump control system. Background Art

[0002] High-flow circulation pump control systems are widely used in heating, hot water supply, industrial cooling, chemical industry, petroleum and other fields. In these fields, the main function of the circulation pump is to ensure the stable and efficient circulation of fluid in the system.

[0003] However, due to the overall load-bearing requirements on site, the system needs to meet the requirements of centralized overall control system and as small an external size as possible. Therefore, a highly integrated valve group is required to control the high-flow circulation motor. Utility Model Content

[0004] The purpose of the utility model is to provide a high-flow circulation pump control system. The utility model can only use a control valve component in the form of a cartridge valve. Since the conventional plate-type reversing valve cannot meet the flow requirement, the direction switching function can only be achieved by combining a two-way cartridge valve with a one-way valve, thereby achieving the advantages of high integration and small size and space.

[0005] In order to solve the above technical problems, the utility model provides a high-flow circulation pump control system, comprising: a circulation pump, a circulation motor, a hydraulically controlled reversing valve, a manual reversing valve, a two-way valve 1, a two-way valve 2, a one-way valve and a shuttle valve;

[0006] The oil outlet of the circulation pump is connected to the oil inlet of the two-way valve 1 on the left, the oil outlet of the two-way valve 1 is connected to the oil inlet of the two-way valve 2 and the oil inlet of the circulation motor, the oil outlet of the circulation motor is connected to the oil inlet of the two-way valve 2 on the right and the oil inlet of the two-way valve 1 on the right, and the oil outlet of the two-way valve 1 on the right is connected to the oil return end of the circulation pump;

[0007] The control port of the hydraulically controlled reversing valve is connected to the external control oil pressurizing port P1, the A port of the hydraulically controlled reversing valve is connected to the control ports of the two-way valves 1 on the left and right sides, and the P port of the hydraulically controlled reversing valve is connected to one end of the four one-way valves, wherein the other ends of the two one-way valves on the left are respectively connected to the oil inlet and oil outlet of the two-way valve 1 on the left, and the other ends of the two one-way valves on the right are respectively connected to the oil inlet and oil outlet of the two-way valve 1 on the right;

[0008] The control port of the manual reversing valve is connected to the control port of the two-way valve 2 on the left and right sides, the P port of the manual reversing valve is connected to one end of the shuttle valve, the other two ends of the shuttle valve are respectively connected to the oil inlet ends of the two-way valve 2 on the left and right sides, and the oil outlet ends of the two-way valve 2 on the left and right sides are connected to the pressure relief port T.

[0009] Preferably, the circulation pump is powered by a circulation pump motor M2.

[0010] Preferably, the pressure relief ends of the hydraulically controlled reversing valve and the manual reversing valve are connected to the pressure relief port Y.

[0011] Preferably, a two-way overflow valve is further included, and the two-way overflow valve is arranged between the oil inlet end and the oil outlet end of the circulation motor.

[0012] Preferably, both the two-way valve one and the two-way valve two are provided with a PNP indicator switch, through which the switching status of the two-way valve one and the two-way valve two can be monitored in real time, and the status information can be fed back to the external control system.

[0013] Preferably, the two-way valve 1 and the two-way valve 2 are two-way cartridge valves.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The utility model can only adopt control valve components in the form of cartridge valves. Since conventional plate-type reversing valves cannot meet the flow requirements, the direction switching function can only be achieved through the combination of two-way cartridge valves and one-way valves, thereby achieving the advantages of high integration and small size and space. Moreover, the system of the utility model has high safety during operation. When each two-way valve is abnormal from the set state, the system alarms, further optimizing the safety environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a high-flow circulation pump control system of the utility model.

[0017] In the figure: 1-circulation pump, 2-circulation motor, 3-hydraulic controlled reversing valve, 4-manual reversing valve, 5-two-way valve 1, 6-two-way valve 2, 7-check valve, 8-shuttle valve, 9-two-way relief valve. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are greatly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention.

[0019] like Figure 1As shown, the present invention specifically provides a high-flow circulation pump control system, comprising: a circulation pump 1, a circulation motor 2, a hydraulically controlled reversing valve 3, a manual reversing valve 4, a two-way valve 1 5, a two-way valve 2 6, a check valve 7, and a shuttle valve 8. The circulation pump 1 is powered by a circulation pump motor M2. The two-way valves 1 5 and 2 6 are two-way cartridge valves. Both valves 1 5 and 2 6 are equipped with PNP indicator switches, which monitor the switch status of valves 1 5 and 2 6 in real time and provide feedback to an external control system. Specifically, when a two-way valve exhibits an abnormality from its set state, the system triggers an alarm, further optimizing safety. When the two-way valve is in its set state, the PNP indicator switch emits a corresponding signal, indicating that the valve is operating normally. When the two-way valve's switch state deviates from its set state, the PNP indicator switch emits an abnormality signal, triggering a system alarm. Based on the signals from the PNP indicator switches, the system controls the position of the two-way valves, ensuring that the valves operate as intended.

[0020] Among them, the oil outlet end of the circulation pump 1 is connected to the oil inlet end of the left two-way valve 1 5, the oil outlet end of the two-way valve 1 5 is connected to the oil inlet end of the two-way valve 2 6 and the oil inlet end of the circulation motor 2, the oil outlet end of the circulation motor 2 is connected to the oil inlet end of the right two-way valve 2 6 and the oil inlet end of the right two-way valve 1 5, and the oil outlet end of the right two-way valve 1 5 is connected to the oil return end of the circulation pump 1;

[0021] The control port of the hydraulically controlled reversing valve 3 is connected to the external control oil pressurizing port P1, the A port of the hydraulically controlled reversing valve 3 is connected to the control ports of the two-way valves 5 on the left and right sides, and the P port of the hydraulically controlled reversing valve 3 is connected to one end of four one-way valves 7, of which the other ends of the two one-way valves 7 on the left are respectively connected to the oil inlet and oil outlet of the left two-way valve 5, and the other ends of the two one-way valves 7 on the right are respectively connected to the oil inlet and oil outlet of the right two-way valve 5;

[0022] The control port of the manual reversing valve 4 is connected to the control port of the two-way valve 2 6 on the left and right sides, the P port of the manual reversing valve 4 is connected to one end of the shuttle valve 8, the other two ends of the shuttle valve 8 are respectively connected to the oil inlet ends of the two-way valve 2 6 on the left and right sides, and the oil outlet ends of the two-way valve 2 6 on the left and right sides are connected to the pressure relief port T.

[0023] The pressure relief ends of the hydraulically controlled reversing valve 3 and the manual reversing valve 4 are connected to the pressure relief port Y.

[0024] It also includes a two-way overflow valve 9 , which is arranged between the oil inlet end and the oil outlet end of the circulation motor 2 .

[0025] It also includes the following working principles:

[0026] The system operates with circulating pump 1's motor M2 rotating forward. Circulating pump 1 delivers oil from its left side and returns to its right side. Control oil pressure is increased at port P1, causing hydraulically controlled directional valve 3 to shift, opening the left two-way valve 5. Pressurized oil flows through the left passage to the left side of circulating motor 2. Oil returns from circulating motor 2 to its right side, flows back through the right passage to the right two-way valve 5, and finally to the right return port of circulating pump 1. The principles of reverse and forward rotation of circulating pump 1's motor M2 are similar and will not be detailed here.

[0027] When the system requires pressure relief, the reversing valves are manually controlled, floating the left and right two-way valves 2 (6). Hydraulic oil flows to pressure relief port T, depressurizing the system. Four check valves 7 control the opening and closing of the left and right two-way valves 1 (5). The hydraulically controlled reversing valve 3 is used to fill and drain the control ports of the two-way valve 1 (5), achieving both on- and off-state functions. The two-way valve 2 (6) provides pressure relief for the entire hydraulic system. In the initial state of the manual reversing valve 4, high-pressure oil enters the control ports of the two-way valve 2 (6) through the shuttle valve 8, closing both valves. When pressure relief is required, the manual reversing valve 4 is manually moved, shutting off the high-pressure oil from entering the control ports and allowing the control oil to flow through pressure relief port Y. The two-way valves 2 (6) are both open, allowing high-pressure oil to flow through pressure relief port T. The two-way relief valve 9 sets a safety pressure. If a system fault occurs, such as a physical failure causing the circulation motor 2 to become stuck, the high-pressure oil opens the two-way relief valve 9, allowing the hydraulic oil to return to the return port of the circulation pump 1 through the two-way relief valve 9, ensuring system safety.

[0028] The above description is only a description of the preferred embodiment of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A high flow circulation pump control system, characterized in that, include: Circulation pump (1), circulation motor (2), hydraulically controlled reversing valve (3), manual reversing valve (4), two-way valve 1 (5), two-way valve 2 (6), one-way valve (7) and shuttle valve (8); wherein the oil outlet of the circulation pump (1) is communicated with the oil inlet of the two-way valve 1 (5) on the left, the oil outlet of the two-way valve 1 (5) is communicated with the oil inlet of the two-way valve 2 (6) and the oil inlet of the circulation motor (2), the oil outlet of the circulation motor (2) is communicated with the oil inlet of the two-way valve 2 (6) on the right and the oil inlet of the two-way valve 1 (5) on the right, and the oil outlet of the two-way valve 1 (5) on the right is communicated with the oil return end of the circulation pump (1); The control port of the hydraulically controlled reversing valve (3) is communicated with the external control oil pressurizing port P1, the A port of the hydraulically controlled reversing valve (3) is communicated with the control ports of the two-way valves (5) on the left and right sides, and the P port of the hydraulically controlled reversing valve (3) is communicated with one end of the four one-way valves (7), wherein the other ends of the two one-way valves (7) on the left are respectively communicated with the oil inlet end and the oil outlet end of the two-way valve (5) on the left, and the other ends of the two one-way valves (7) on the right are respectively communicated with the oil inlet end and the oil outlet end of the two-way valve (5) on the right; The control port of the manual reversing valve (4) is communicated with the control ports of the two-way valves (6) on the left and right sides, the P port of the manual reversing valve (4) is communicated with one end of the shuttle valve (8), the other two ends of the shuttle valve (8) are respectively communicated with the oil inlet ends of the two-way valves (6) on the left and right sides, and the oil outlet ends of the two-way valves (6) on the left and right sides are communicated with the pressure relief port T.

2. A high flow circulation pump control system according to claim 1, characterized in that: The circulating pump (1) is powered by a circulating pump (1) motor M2.

3. A high flow circulation pump control system according to claim 1, characterized in that: The pressure relief ends of the hydraulically controlled reversing valve (3) and the manual reversing valve (4) are in communication with the pressure relief port Y.

4. A high flow circulation pump control system according to claim 1, characterized in that: It also includes a two-way overflow valve (9), which is arranged between the oil inlet end and the oil outlet end of the circulation motor (2).

5. A high flow circulation pump control system according to claim 1, characterized in that: The two-way valve 1 (5) and the two-way valve 2 (6) are both provided with a PNP indicator switch, through which the switch status of the two-way valve 1 (5) and the two-way valve 2 (6) can be monitored in real time, and the status information can be fed back to the external control system.

6. A high flow circulation pump control system according to any one of claims 1 to 5, characterized in that: The two-way valve 1 (5) and the two-way valve 2 (6) are two-way plug-in valves.

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