CN110873080A - A hydraulically controlled reciprocating supercharger - Google Patents

Abstract

The utility model provides a reciprocating type booster of hydraulic control, is including reciprocating type pressure cylinder and the hydraulic control switching-over valve that matches, the pressure cylinder includes the left and right piston rod at piston, the piston both ends that cylinder body and the inside setting of cylinder body, the cylinder body includes the left and right pressure cylinder at middle piston cylinder and both ends, left and right control mouth is opened to the cylinder body, left and right control mouth is connected respectively the left and right guide mouth of hydraulic control switching-over valve, left and right control mouth sets up in pressure cylinder wall. According to the invention, the control ports are arranged on the left pressurizing cylinder body and the right pressurizing cylinder body, the number of used parts is further reduced, and the cost and the failure rate are reduced while hydraulic control reversing is realized.

Description

A hydraulically controlled reciprocating supercharger

technical field

The invention relates to a hydraulic supercharger, in particular to a hydraulically controlled reciprocating supercharger.

Background technique

The hydraulic superchargers currently used in the market are mainly traditional single-cylinder superchargers and bidirectional reciprocating superchargers. Existing reciprocating superchargers are mostly matched with electromagnetic reversing valves for reversing, but the electromagnetic reversing valve has a small flow rate and low reversing frequency, resulting in poor stability of the output pressure, and only small flow and low pressure boosting can be performed. The ultra-high pressure supercharger disclosed in Chinese patent ZL201520640556.7 and a reciprocating supercharger disclosed in ZL201720584115.9, both of which realize hydraulic control reversal, can carry out ultra-high pressure supercharging and can also ensure a large flow rate , but the commutation structure is more complex, and the cost disadvantage is prominent when matching some smaller equipment, and the complex structure brings more leakage points and higher failure rates.

SUMMARY OF THE INVENTION

In view of the deficiencies of the prior art, the present invention provides a hydraulically controlled reciprocating supercharger.

The technical scheme adopted in the present invention is: a hydraulically controlled reciprocating supercharger, comprising a reciprocating booster cylinder and a matching hydraulically controlled reversing valve, wherein the booster cylinder includes a cylinder body and a piston and a piston arranged inside the cylinder body. Left and right piston rods at both ends, the cylinder body includes a middle piston cylinder and left and right booster cylinders at both ends, the left and right piston chambers are formed between the piston and the cylinder body, and the left and right piston cavities are formed between the left piston rod and the cylinder body. Pressurizing chamber, a right pressurizing chamber is formed between the right piston rod and the cylinder body, the hydraulic control reversing valve A and B ports are respectively connected to the left and right piston chambers of the pressurizing cylinder, and the cylinder body opens the left and right control ports, so The left and right control ports are respectively connected to the left and right pilot ports of the hydraulic control reversing valve, and the left and right control ports are arranged on the cylinder wall of the booster cylinder.

The hydraulic pressure reciprocating supercharger is characterized in that: the left control port is connected to the pilot port of the first hydraulic control check valve and the second hydraulic control check valve, and the right control port is connected to the second hydraulic control port. Control check valve and pilot port of the first hydraulic control check valve.

The hydraulic control reciprocating supercharger is characterized in that: the left control port is connected to the left overflow valve, and the right control port is connected to the right overflow valve.

By arranging the control ports on the left and right pressurizing cylinders, the present invention further reduces the number of parts used, thereby reducing costs and failure rates while realizing hydraulically controlled commutation.

Description of drawings

Fig. 1 is the structural representation of state one of the present invention;

FIG. 2 is a schematic structural diagram of the second state of the present invention.

In the picture: 1-cylinder, 2-piston, 3-left piston rod, 4-right piston rod, 6-left piston chamber, 7-right piston chamber, 8-left booster chamber, 9-right booster chamber, 10-hydraulic control reversing valve, 11-piston cylinder, 12-left booster cylinder, 13-right booster cylinder, 14-left relief valve, 15-right relief valve, 16-left control port, 17-right Control port, 18-first hydraulic control check valve, 19-second hydraulic control check valve.

Detailed ways

As shown in FIG. 1 , a hydraulically controlled reciprocating supercharger includes a reciprocating supercharging cylinder, an electromagnetic reversing valve 10 , a left relief valve 14 and a right relief valve 15 . The reciprocating booster cylinder includes a cylinder block 1, which consists of a piston cylinder 11 in the middle and a left booster cylinder 12 and a right booster cylinder 13 at both ends. The piston 2 is arranged in the piston cylinder 11, and the left piston rod 3 is arranged on the left side. In the pressurizing chamber, the right piston rod 4 is arranged in the right pressurizing cylinder 13 , the left piston chamber 6 and the right piston chamber 7 are formed between the piston 2 and the piston cylinder 11 , and the left piston rod 3 and the left pressurizing cylinder 12 are formed. The left supercharging chamber 8 , the right supercharging chamber 9 are formed between the right piston rod 4 and the right supercharging cylinder 13 .

The hydraulic control reversing valve 10 is a two-position four-way hydraulic control reversing valve. The P port is connected to the low pressure pipeline p, the T port is connected to the oil return pipeline, the A port is connected to the left piston chamber 6, and the B port is connected to the right piston chamber 7.

The left booster cylinder 12 opens the left control port 16, the right booster cylinder 13 opens the right control port 17, and the left control port 16 is connected to the left pilot port of the hydraulic control reversing valve 10, the left overflow valve 14, and the first hydraulic control one-way The pilot port of the valve 18 and the second hydraulic control check valve 19, the right control port 17 is connected to the pilot port on the right side of the hydraulic control reversing valve 10, the right overflow valve 15, the second hydraulic control check valve 19 and the first hydraulic control check valve 19. The pilot port of the direction valve 18 , the left relief valve 14 , the right relief valve 15 , the first hydraulic control check valve 18 , and the second hydraulic control check valve 19 are connected to the oil drain pipeline X.

As shown in Figure 1, when the supercharger is working, the pilot port of the first hydraulic control check valve has no pressure, the first hydraulic control check valve is closed, and the pressure oil in the low pressure oil circuit p enters the liquid through the left boost chamber and the left control port. The pilot port on the left side of the directional control valve and the pilot port of the second hydraulic control check valve, the second hydraulic control check valve is opened, and the pilot port on the right side of the hydraulic control directional valve passes through the second hydraulic control check valve and the oil drain line X Connected, the spool of the hydraulic control reversing valve is in the left position, the P port is connected to the B port, and the T port is connected to the A port. The pressure oil in the low pressure oil circuit enters the right pressurizing chamber through the hydraulic control reversing valve, and pushes the piston to move to the left. , the left piston chamber returns oil through the hydraulic control reversing valve A port and T port, and the left boost chamber is pressurized.

When the piston rod of the supercharger moves to the position shown in Figure 2, the left control port is disconnected from the left supercharging cylinder, the right control port is connected with the right supercharging chamber, the pressure of the pilot port of the second hydraulic control check valve decreases, and the first The second hydraulic control check valve is closed, and the pressure oil in the low pressure oil circuit p enters the right pilot port of the hydraulic control reversing valve and the pilot port of the first hydraulic control check valve through the right booster chamber and the right control port. The direction valve is opened, the pilot port on the left side of the hydraulic control reversing valve is connected to the oil drain line X through the first hydraulic control check valve, the spool of the hydraulic control reversing valve is in the right position, the P port is connected to the A port, and the T port and the B port are connected. The port is connected, the pressure oil in the low-pressure oil circuit enters the left boost chamber through the hydraulic control reversing valve, pushes the piston to move to the right, the right piston chamber returns oil through the B port and the T port, and the right boost chamber is pressurized, and so on and so forth. Continuous pressurization.

The function of the left and right relief valves is to protect the hydraulic control reversing valve from being impacted by high pressure, and it can also be removed. The specific positions of the left and right control ports are determined by the working parameters of the equipment.

Claims (3)

1. A hydraulically controlled reciprocating supercharger, comprising a reciprocating booster cylinder and a matching hydraulically controlled reversing valve, the booster cylinder comprising a cylinder block and a piston provided inside the cylinder block, left and right pistons at both ends of the piston The cylinder body includes a piston cylinder in the middle and left and right booster cylinders at both ends. Left and right piston chambers are formed between the piston and the cylinder body, and a left booster chamber is formed between the left piston rod and the cylinder body. The right piston A right pressurizing chamber is formed between the rod and the cylinder body, the hydraulic control reversing valve A and B are respectively connected to the left and right piston chambers of the pressurizing cylinder, the cylinder body opens the left and right control ports, and the left and right control ports The left and right pilot ports of the hydraulic control reversing valve are respectively connected, and it is characterized in that: the left and right control ports are arranged on the cylinder wall of the booster cylinder. 2 . The hydraulically controlled reciprocating supercharger according to claim 1 , wherein the left control port is connected to the pilot port of the first hydraulically controlled check valve and the second hydraulically controlled check valve, and the right The control port is connected to the second hydraulic control check valve and the pilot port of the first hydraulic control check valve. 3 . The hydraulically controlled reciprocating supercharger according to claim 2 , wherein the left control port is connected to a left overflow valve, and the right control port is connected to a right overflow valve. 4 .

Images