Buried horizontal compression station electro-hydraulic system

Abstract

The utility model discloses a hydraulic-electric system of a buried horizontal compression station. The system comprises an oil tank assembly for bearing hydraulic oil, a hydraulic valve group assembly, a vertical compression oil cylinder, a turnover oil cylinder, a horizontal compression oil cylinder, a front door oil cylinder and a lifting oil cylinder, a double-pump type oil pump is arranged in the oil tank assembly, and the double-pump type oil pump is connected into the hydraulic valve group assembly through double oil ways; the hydraulic valve set assembly comprises a main oil inlet way connected with a main pump oil way and a secondary pump oil way of the double-pump oil pump in a combined mode, a first secondary oil return way connected with the main pump oil way in the double-pump oil pump, a second secondary oil return way connected with a secondary pump oil way in the double-pump oil pump, and a main oil return way connected with the oil tank assembly. Working hydraulic pressure is switched smoothly, the safety performance is high, the working speed is adjustable, and control is accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of garbage compression, in particular to a hydraulic-electric system of an underground horizontal compression station. Background Art

[0002] As people's living standards improve, more and more garbage is produced. In order to facilitate quick cleaning, sanitation compression equipment has become popular rapidly.

[0003] During the operation of the existing underground compression station, due to the large weight of the piston itself, the sudden hydraulic change when unloading can easily cause the piston to free fall and cause damage; and the working hydraulic pressure of the lifting cylinder is different from that of other cylinders. Generally, the lifting cylinder requires a separate hydraulic system, and the lifting cylinder requires four cylinders to be raised and lowered at the same time, which requires higher stability of the oil pressure. Utility Model Content

[0004] The utility model aims to address the deficiencies in the prior art and to provide an underground horizontal compression station hydraulic-electric system that reduces pressure changes during cylinder unloading and accurately controls hydraulic oil changes.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an underground horizontal compression station hydraulic and electrical system, including an oil tank assembly carrying hydraulic oil, a hydraulic valve assembly, a vertical compression cylinder, a tilt cylinder, a horizontal compression cylinder, a front door cylinder, and a lifting cylinder;

[0006] The oil tank assembly is provided with a double-pump oil pump, which is connected to the hydraulic valve assembly in two oil circuits;

[0007] The hydraulic valve group assembly includes a main oil inlet circuit connected to the main pump oil circuit and the secondary pump oil circuit of the dual-pump oil pump, a primary oil return circuit connected to the main pump oil circuit of the dual-pump oil pump, a secondary oil return circuit connected to the secondary oil pump circuit of the dual-pump oil pump, and a main oil return circuit connected to the oil tank assembly;

[0008] The main oil inlet is respectively connected to the P oil port of the first three-position four-way solenoid valve, the P oil port of the second three-position four-way solenoid valve, the P oil port of the third three-position four-way solenoid valve, the P oil port of the fourth three-position four-way solenoid valve, and the P oil port of the fifth three-position four-way solenoid valve;

[0009] The main oil return line is respectively connected to the T oil port of the first three-position four-way solenoid valve, the T oil port of the second three-position four-way solenoid valve, the T oil port of the third three-position four-way solenoid valve, the T oil port of the fourth three-position four-way solenoid valve, and the T oil port of the fifth three-position four-way solenoid valve;

[0010] The first oil return line is connected from the main pump oil line and is connected in sequence to the first hydraulic gauge and the pressure regulating valve before leading to the main oil return line;

[0011] The second oil return line is connected from the secondary pump oil line and is connected in sequence to the second hydraulic gauge and the first pilot electromagnetic overflow valve, and then leads to the main oil return line;

[0012] The oil port A of the first three-position four-way solenoid valve is connected to the first sequence valve and connected to the oil inlet of the vertical compression cylinder, and the oil port B of the first three-position four-way solenoid valve is connected to the oil outlet of the vertical compression cylinder;

[0013] The A and B oil ports of the second three-position four-way solenoid valve are connected in parallel with the first hydraulic lock and the one-way throttle valve in sequence and connected to the turning cylinder;

[0014] The A and B oil ports of the third three-position four-way solenoid valve are connected to the horizontal compression cylinder;

[0015] The A and B oil ports of the fourth three-position four-way solenoid valve are connected to the front door oil cylinder;

[0016] The oil port A of the fifth three-position four-way solenoid valve is connected in sequence to the second sequence valve and the motor synchronization mechanism, and then connected in parallel to the oil port B of the fifth three-position four-way solenoid valve to connect to the second hydraulic lock and connect to the lifting cylinder. It should be further explained that the synchronous motor and the second hydraulic lock prevent the diversion of the hydraulic oil, and the back pressure buffer is further realized through the second sequence valve to slow down the falling speed of the lifting cylinder, making the entire lifting and falling process safer and more controllable.

[0017] Preferably, the pressure regulating valve includes a first overflow valve, a first pilot overflow valve and a sixth three-position four-way solenoid valve, the P oil port of the first pilot overflow valve is connected to the P oil port of the sixth three-position four-way solenoid valve, the B oil port of the sixth three-position four-way solenoid valve is connected to the P oil port of the first overflow valve, the T oil port of the sixth three-position four-way solenoid valve is connected to the T oil port of the first overflow valve, the T oil port of the first overflow valve is connected to the T oil port of the first pilot overflow valve, the pressure setting value of the first pilot overflow valve is 18Mpa, and the pressure setting value of the first overflow valve is 9Mpa.

[0018] Preferably, the first pilot electromagnetic relief valve comprises a second pilot relief valve and a first two-position four-way electromagnetic valve, and the pressure setting value of the second pilot relief valve is 18 MPa.

[0019] Preferably, a temperature sensor is provided in the main oil inlet circuit.

[0020] Preferably, the oil tank assembly includes an oil return filter, a liquid level temperature sensor, and an oil inlet filter, the oil inlet filter is connected to a dual-pump oil pump, and the oil return filter is connected to a main oil return line.

[0021] Preferably, both the main pump oil circuit and the secondary pump oil circuit are provided with a one-way valve.

[0022] Compared with the prior art, the utility model has the following advantages: using the hydraulic-electric system, a first sequence valve is set up to prevent the vertical compression cylinder from suddenly falling back when unloading, causing the piston to lose weight and be damaged. Similarly, a second sequence valve is used to achieve back pressure buffering for the synchronous lifting cylinder, thereby avoiding damage to the cylinder caused by unloading and improving the safety performance of the system; a dual-pump oil pump, a pressure regulating valve and a first pilot electromagnetic overflow valve are used to control the system pressure to switch between two hydraulic pressures to meet the requirements of different cylinder operating speeds and operating pressures, thereby achieving smooth switching and precise control of the hydraulic pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a hydraulic principle diagram of the utility model.

[0024] Figure 2 It is a principle diagram of the pressure regulating valve in the utility model.

[0025] Figure 3 It is a principle diagram of the first pilot electromagnetic overflow valve in the utility model.

[0026] Figure 4 It is an action sequence table of the utility model.

[0027] Among them, 1- oil tank assembly, 11- double pump oil pump, 12- oil inlet filter, 13- liquid level temperature sensor, 14- oil return filter, 2- hydraulic valve assembly, 21- main oil inlet line, 22- main oil return line, 23- first oil return line, 24- second oil return line, 25- main pump oil line, 26- secondary pump oil line, 31- pressure regulating valve, 32- first pilot electromagnetic overflow valve, 33- first hydraulic gauge, 34- second hydraulic gauge, 35- temperature sensor, 41- first three-position four-way solenoid valve, 42- second three-position four-way solenoid valve, 43- third three-position four-way solenoid valve 1-2-position four-way solenoid valve, 2-3-position four-way solenoid valve, 3-4-position four-way solenoid valve, 4-5-6-position four-way solenoid valve, 5-7-position four-way solenoid valve, 5-8-position four-way solenoid valve, 6-9-position four-way solenoid valve, 7-10-11-12-14-16-17-18-19-20-21-22-23-24-26-27-28-29-30-31-32-33-34-35-36-37-38-39-40-51-6-3-position four-way solenoid valve, 7-11-12-13-14-16-17-18-19-20-21-22-23-24-26-28-29-30-31-32-33-34-35-36-37-38-39-40-51-6-3-position four-way solenoid valve, 7 ...3-13-13-14-16-17-18-19-20-21-22-23-24-26-28-29-30-31-32-33-34-35-36-37-38-39-40-51 DETAILED DESCRIPTION

[0028] The present invention is further explained below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that these implementation methods are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0029] like Figures 1 to 3The buried horizontal compression station hydraulic and electrical system shown in the figure includes an oil tank assembly 1 carrying hydraulic oil, a hydraulic valve assembly 2, a vertical compression cylinder 61, a tilt cylinder 62, a horizontal compression cylinder 63, a front door cylinder 64, and a lifting cylinder 65; a dual-pump oil pump 11 is provided in the oil tank assembly 1, and the dual-pump oil pump 11 is connected to the hydraulic valve assembly 2 in dual oil circuits; the hydraulic valve assembly 2 includes a main oil inlet circuit 21 connected to the main pump oil circuit 25 and the secondary pump oil circuit 26 of the dual-pump oil pump 11, a first oil return circuit 23 connected to the main pump oil circuit 25 of the dual-pump oil pump 11, a second oil return circuit 24 connected to the secondary oil pump circuit of the dual-pump oil pump 11, and a main oil return circuit 22 connected to the oil tank assembly 1, and both the main pump oil circuit 25 and the secondary pump oil circuit 26 are provided with a one-way valve; the main oil inlet circuit 21 is connected to the main pump oil circuit 25 and the secondary pump oil circuit 26 of the dual-pump oil pump 11, and the main oil return circuit 22 is connected to the oil tank assembly 1. The main oil inlet 21 is respectively connected to the P oil port of the first three-position four-way solenoid valve 41, the P oil port of the second three-position four-way solenoid valve 42, the P oil port of the third three-position four-way solenoid valve 43, the P oil port of the fourth three-position four-way solenoid valve 44, and the P oil port of the fifth three-position four-way solenoid valve 45. A temperature sensor 35 is provided in the main oil inlet 21, and the temperature of the main oil inlet 21 is monitored in real time by the temperature sensor 35; the main oil return 22 is respectively connected to the T oil port of the first three-position four-way solenoid valve 41, the T oil port of the second three-position four-way solenoid valve 42, the T oil port of the third three-position four-way solenoid valve 43, the T oil port of the fourth three-position four-way solenoid valve 44, and the T oil port of the fifth three-position four-way solenoid valve 45; the first oil return 23 is connected from the main pump oil circuit 25 and is sequentially connected to the first hydraulic gauge 33, The pressure regulating valve 31 leads to the main oil return line 22. The pressure regulating valve 31 includes a first relief valve 74, a first pilot relief valve 75 and a sixth three-position four-way solenoid valve 73. The P oil port of the first pilot relief valve 75 is connected to the P oil port of the sixth three-position four-way solenoid valve 73, the B oil port of the sixth three-position four-way solenoid valve 73 is connected to the P oil port of the first relief valve 74, the T oil port of the sixth three-position four-way solenoid valve 73 is connected to the T oil port of the first relief valve 74, the T oil port of the first relief valve 74 is connected to the T oil port of the first pilot relief valve 75, the pressure setting value of the first pilot relief valve 75 is 18Mpa, and the pressure setting value of the first relief valve 74 is 9Mpa; the second oil return line 24 is connected from the secondary pump oil line 26 and is connected in sequence to the second hydraulic gauge 34, the first pilot electromagnetic relief valve 75, and the second hydraulic gauge 34. The valve 32 leads to the main oil return line 22. The first pilot electromagnetic relief valve 32 includes a second pilot relief valve 72 and a first two-position four-way electromagnetic valve 71. The pressure setting value of the second pilot relief valve 72 is 18Mpa; the A oil port of the first three-position four-way electromagnetic valve 41 is connected to the first sequence valve 51 and connected to the oil inlet of the vertical compression cylinder 61, and the B oil port of the first three-position four-way electromagnetic valve 41 is connected to the oil outlet of the vertical compression cylinder 61; the A and B oil ports of the second three-position four-way electromagnetic valve 42 are connected in parallel with the first hydraulic lock 52 and the one-way throttle valve 53 in turn and connected to the flip cylinder 62; the A and B oil ports of the third three-position four-way electromagnetic valve 43 are connected to the horizontal compression cylinder 63; the A and B oil ports of the fourth three-position four-way electromagnetic valve 44 are connected to the front door cylinder 64;The A oil port of the fifth three-position four-way solenoid valve 45 is connected in sequence to the second sequence valve 54 and the motor synchronization mechanism 55, and then connected in parallel with the B oil port of the fifth three-position four-way solenoid valve 45 to the second hydraulic lock 56 and the lifting cylinder 65. The oil tank assembly 1 includes a return oil filter 14, a liquid level temperature sensor 3513, and an oil inlet filter 12. The oil inlet filter 12 is connected to the dual-pump oil pump 11, and the return oil filter 14 is connected to the main return oil line 22. ;

[0030] like Figure 4 The action sequence table shown, the specific working process and principle of the utility model are as follows:

[0031] The pressure regulating valve 31 is in a normally open unloading state, and the first pilot electromagnetic relief valve 32 is also in a normally open unloading state. When 13DT is energized, the unloading set pressure value of the first pilot electromagnetic relief valve 32 is 9Mpa;

[0032] When 1DT, 2DT, and 3DT are energized, the vertical compression cylinder 61 is compressed quickly; the A oil port and the P oil port of the first three-position four-way solenoid valve 41 are connected, and the B oil port and the T oil port of the first three-position four-way solenoid valve 41 are connected, and the hydraulic oil enters the vertical compression cylinder 61 from the main oil inlet 21 through the P and A oil ports of the first three-position four-way solenoid valve 41 and the one-way valve channel of the first sequence valve 51, and then returns to the main oil return 22 through the B and T oil ports of the first three-position four-way solenoid valve 41. At this time, the main oil inlet 21 provides 18 Mpa hydraulic oil for the dual pumps at the same time;

[0033] When 2DT and 3DT are energized, the vertical compression cylinder 61 is compressed; the A oil port and the P oil port of the first three-position four-way solenoid valve 41 are connected, and the B oil port and the T oil port of the first three-position four-way solenoid valve 41 are connected, and the hydraulic oil enters the vertical compression cylinder 61 from the main oil inlet 21 through the P and A oil ports of the first three-position four-way solenoid valve 41 and the one-way valve channel of the first sequence valve 51, and then returns to the main oil return 22 through the B and T oil ports of the first three-position four-way solenoid valve 41. At this time, the main oil inlet 21 provides 18 Mpa hydraulic oil for the secondary pump alone;

[0034] When 1DT, 2DT, and 4DT are energized, the vertical compression cylinder 61 returns; the A oil port and the T oil port of the first three-position four-way solenoid valve 41 are connected, and the B oil port and the P oil port of the first three-position four-way solenoid valve 41 are connected, and the hydraulic oil enters the vertical compression cylinder 61 from the main oil inlet 21 through the P and B oil ports of the first three-position four-way solenoid valve 41, and then returns to the main oil return 22 through the A and T oil ports of the first three-position four-way solenoid valve 41. During this period, the first sequence valve 51 acts as a balancing valve to reduce the free fall of the cylinder piston caused by its own weight. At this time, the main oil inlet 21 provides 18 Mpa hydraulic oil for the dual pumps at the same time;

[0035] When 2DT and 5DT are energized, the overturning cylinder 62 is pushed out; the principle is the same as the compression of the vertical compression cylinder 61;

[0036] When 2DT and 6DT are energized, the turning cylinder 62 returns; the principle is the same as the return of the vertical compression cylinder 61;

[0037] When 1DT, 2DT, and 7DT are energized, the horizontal compression cylinder 63 is compressed quickly; the principle is the same as the vertical compression cylinder 61.

[0038] When 2DT and 7DT are energized, the horizontal compression cylinder 63 is compressed; the principle is the same as that of the vertical compression cylinder 61;

[0039] When 1DT, 2DT, and 8DT are energized, the horizontal compression cylinder 63 returns; the principle is the same as the return of the vertical compression cylinder 61;

[0040] When 2DT and 9DT are energized, the front door cylinder 64 is pushed out; the principle is the same as the compression of the vertical compression cylinder 61;

[0041] When 2DT and 10DT are energized, the front door cylinder 64 returns; the principle is the same as the return of the vertical compression cylinder 61;

[0042] When 11DT and 13DT are energized, the lifting cylinder 65 is pushed out; the P oil port and the A oil port of the fifth three-position four-way solenoid valve 45 are connected, and the B oil port and the T oil port of the fifth three-position four-way solenoid valve 45 are connected. The hydraulic oil enters the second sequence valve 54 from the main oil inlet 21 through the P and A oil ports of the fifth three-position four-way solenoid valve 45, passes through the motor synchronization mechanism 55 and the second hydraulic lock 56 in sequence, enters the lifting cylinder 65, and then returns to the main oil return 22 through the B and T oil ports of the fifth three-position four-way solenoid valve 45. The motor synchronization mechanism 55 is used to control each independent cylinder to lift at the same time. At this time, the main oil inlet 21 provides 9 Mpa hydraulic oil for the main pump alone;

[0043] When 12DT and 13DT are energized, the lifting cylinder 65 returns; the P oil port and the B oil port of the fifth three-position four-way solenoid valve 45 are connected, and the A oil port and the T oil port of the fifth three-position four-way solenoid valve 45 are connected. The hydraulic oil enters the lifting cylinder 65 from the main oil inlet circuit 21 through the P and B oil ports of the fifth three-position four-way solenoid valve 45, and then passes through the second hydraulic lock 56, the motor synchronization mechanism 55, and the second sequence valve 54 in sequence, and then returns to the main return oil circuit 22 through the A and T oil ports of the fifth three-position four-way solenoid valve 45. During this period, the second sequence valve 54 acts as a balancing valve to reduce the free fall of the cylinder piston caused by its own weight. At this time, the main oil inlet circuit 21 provides 9Mpa of hydraulic oil to the main pump alone.

[0044] The above description shows and describes the preferred embodiments of the utility model. As mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A buried horizontal compression station hydraulic and electrical system, characterized in that: It includes a tank assembly carrying hydraulic oil, a hydraulic valve assembly, a vertical compression cylinder, a tilt cylinder, a horizontal compression cylinder, a front door cylinder, and a lifting cylinder; The oil tank assembly is provided with a double-pump oil pump, which is connected to the hydraulic valve assembly in two oil circuits; The hydraulic valve group assembly includes a main oil inlet circuit connected to the main pump oil circuit and the secondary pump oil circuit of the dual-pump oil pump, a primary oil return circuit connected to the main pump oil circuit of the dual-pump oil pump, a secondary oil return circuit connected to the secondary oil pump circuit of the dual-pump oil pump, and a main oil return circuit connected to the oil tank assembly; The main oil inlet is respectively connected to the P oil port of the first three-position four-way solenoid valve, the P oil port of the second three-position four-way solenoid valve, the P oil port of the third three-position four-way solenoid valve, the P oil port of the fourth three-position four-way solenoid valve, and the P oil port of the fifth three-position four-way solenoid valve; The main oil return line is respectively connected to the T oil port of the first three-position four-way solenoid valve, the T oil port of the second three-position four-way solenoid valve, the T oil port of the third three-position four-way solenoid valve, the T oil port of the fourth three-position four-way solenoid valve, and the T oil port of the fifth three-position four-way solenoid valve; The first oil return line is connected from the main pump oil line and is connected in sequence to the first hydraulic gauge and the pressure regulating valve before leading to the main oil return line; The second oil return line is connected from the secondary pump oil line and is connected in sequence to the second hydraulic gauge and the first pilot electromagnetic overflow valve, and then leads to the main oil return line; The oil port A of the first three-position four-way solenoid valve is connected to the first sequence valve and connected to the oil inlet of the vertical compression cylinder, and the oil port B of the first three-position four-way solenoid valve is connected to the oil outlet of the vertical compression cylinder; The A and B oil ports of the second three-position four-way solenoid valve are connected in parallel with the first hydraulic lock and the one-way throttle valve in sequence and connected to the turning cylinder; The A and B oil ports of the third three-position four-way solenoid valve are connected to the horizontal compression cylinder; The A and B oil ports of the fourth three-position four-way solenoid valve are connected to the front door oil cylinder; The A oil port of the fifth three-position four-way solenoid valve is connected in sequence to the second sequence valve and the motor synchronization mechanism, and then connected in parallel with the B oil port of the fifth three-position four-way solenoid valve to connect to the second hydraulic lock and the lifting cylinder.

2. The underground horizontal compression station hydraulic and electrical system according to claim 1, characterized in that: The pressure regulating valve includes a first relief valve, a first pilot relief valve and a sixth three-position four-way solenoid valve. The P oil port of the first pilot relief valve is connected to the P oil port of the sixth three-position four-way solenoid valve. The B oil port of the sixth three-position four-way solenoid valve is connected to the P oil port of the first relief valve. The T oil port of the sixth three-position four-way solenoid valve is connected to the T oil port of the first relief valve. The T oil port of the first relief valve is connected to the T oil port of the first pilot relief valve. The pressure setting value of the first pilot relief valve is 18Mpa, and the pressure setting value of the first relief valve is 9Mpa.

3. The underground horizontal compression station hydraulic and electrical system according to claim 1, characterized in that: The first pilot electromagnetic relief valve comprises a second pilot relief valve and a first two-position four-way electromagnetic valve, and the pressure setting value of the second pilot relief valve is 18 MPa.

4. The underground horizontal compression station hydraulic and electrical system according to claim 1, characterized in that: A temperature sensor is arranged in the main oil inlet passage.

5. The underground horizontal compression station hydraulic and electrical system according to claim 1, characterized in that: The oil tank assembly comprises an oil return filter, a liquid level temperature sensor, and an oil inlet filter. The oil inlet filter is connected to a dual-pump oil pump, and the oil return filter is connected to a main oil return line.

6. The underground horizontal compression station hydraulic and electrical system according to claim 1, characterized in that: The main pump oil circuit and the secondary pump oil circuit are both provided with a one-way valve.

Images