A self-controlled supercharger

Abstract

The present invention discloses an automatic supercharger, comprising: an automatic reversing valve, a proportional plunger boosting valve and a self-awakening switching valve; an automatic reversing valve is arranged at the upper end of the proportional plunger boosting valve; a self-awakening switching valve is arranged on the side of the proportional plunger boosting valve; the automatic reversing valve, the proportional plunger boosting valve and the self-awakening switching valve are fixed as a whole by bolts. The device is reasonably designed and convenient to use, and is composed of three parts, namely, a self-awakening switching valve, a proportional plunger boosting valve and an automatic reversing valve, and has the characteristics of compact structure, small size, and convenient connection and use.

Description

Technical Field

[0001] The present invention relates to the technical field of superchargers, and in particular to an automatic control supercharger. Background Art

[0002] The existing supercharger must form a boosting circuit with other valves such as solenoid reversing valves and one-way valves. Its application is limited due to factors such as size, interface, and cost, and it has no switching function. Therefore, it is urgent to design an automatic boosting valve. Summary of the invention

[0003] The object of the present invention is to provide a self-controlled supercharger.

[0004] To achieve the above object, the present invention adopts the following contents:

[0005] A self-controlled supercharger comprises: a self-controlled reversing valve, a proportional plunger boosting valve and a self-awakening switching valve; the self-controlled reversing valve is arranged at the upper end of the proportional plunger boosting valve; the self-awakening switching valve is arranged on the side of the proportional plunger boosting valve; the self-controlled reversing valve, the proportional plunger boosting valve and the self-awakening switching valve are fixed as a whole by bolts.

[0006] Preferably, the automatic control reversing valve includes a reversing valve body, a No. 1 hole, a No. 1 oil port, an elastic positioning pin, a reversing valve spool, a No. 2 oil port, a No. 1 oil return hole, a No. 2 hole and a No. 2 oil return hole; a reversing valve spool is arranged in a middle lateral position of the reversing valve body; a No. 1 oil return hole is arranged on the right side of the reversing valve spool, and a No. 2 oil return hole is arranged on the left side; a No. 1 hole, a No. 1 oil port, a No. 2 oil port and a No. 2 hole are arranged in sequence from left to right at the bottom end of the reversing valve spool; and an elastic positioning pin is arranged on the left side of the upper end of the reversing valve spool.

[0007] The left and right reversing oil circuits and left and right cylinder oil circuits are designed on the reversing valve body, and the return oil circuit is connected with the valve body oil reservoir to ensure the oil storage of the plunger body; when the self-awakening switching valve is cut into the working state, the booster valve starts to start, and the pressure oil is distributed into the oil cylinder on one side through the valve core, driving the piston in the oil cylinder to move in the force direction and push the plunger to work. At the same time, the piston on the other side moves in the same direction through the flexible expansion connection and makes the working plunger enter the working starting state, and at the same time closes the valve core command signal oil chamber, and the oil in the oil reservoir enters the plunger body cavity through the plunger body reserved hole. When the piston reaches the end, the piston reducing oil channel is connected with the valve core command oil chamber on the other side, and the valve core is moved to the other side of the work station by hydraulic thrust, and the other side repeats the work content just completed on this side. The reciprocating cycle drives the plunger to supply pressure in both directions until the switching valve is closed. The valve core is restricted by the elastic positioning pin and is always in one of the two positions, which can avoid misalignment and switching failure.

[0008] Preferably, the proportional plunger booster valve comprises a booster valve body, an oil cylinder, a left end cover, a right end cover, a left plunger body, a one-way valve, a No. 1 oil passage, a left plunger, a No. 1 oil pool, a left piston, a No. 3 hole, a No. 3 oil port, a No. 4 oil port, a variable diameter oil passage, a No. 4 hole, an active expansion elastic member, a right piston, a No. 2 oil pool, a No. 2 oil passage, a right plunger and a right plunger body; an active expansion elastic member is arranged at the center of the booster valve body; oil cylinders are arranged on the left and right sides of the active expansion elastic member, a left piston is arranged on the left side of the left oil cylinder, and a right piston is arranged on the right side of the right oil cylinder; an No. 1 oil pool is arranged on the left side of the left piston; a left plunger body is arranged on the left side of the No. 1 oil pool; A left plunger is arranged on the left central end face of the left piston, and the left plunger passes through the center of the No. 1 oil pool and the left plunger body in sequence; a No. 2 oil pool is arranged on the right side of the right piston; a right plunger body is arranged on the right side of the No. 2 oil pool; a right plunger is arranged on the right central end face of the right piston, and the right plunger passes through the center of the No. 2 oil pool and the right plunger body in sequence; a one-way valve is arranged on the upper ends of the left plunger body and the right plunger body; a No. 3 hole, a No. 3 oil port, a No. 4 oil port and a No. 4 hole are arranged on the upper end of the oil cylinder from left to right in sequence, and the No. 3 hole, the No. 3 oil port, the No. 4 oil port and the No. 4 hole are respectively connected with the No. 1 hole, the No. 1 oil port, the No. 2 oil port and the No. 2 hole.

[0009] The booster valve body includes left and right oil cylinders, oil supply and reversing oil passages, connections with other two components and oil passages, oil storage and return passages, and external connections for the product; the left and right piston plunger rods are connected by flexible expansion elastic parts. This connection method avoids the valve body parting process. The valve body is an integral part that can make the oil passage design compact and leak-free. The middle diameter reducing part of the rod and the inner hole of the valve body are combined into a reversing oil passage, and the diameter reducing length and position match the plunger stroke; the left and right end covers are arranged symmetrically facing each other, and are both equipped with plunger bodies and one-way valves, which are connected through the valve body and output in parallel.

[0010] Preferably, the self-awakening switching valve comprises a switching valve body, a back pressure spring, a No. 5 oil port, a No. 6 oil port, a multifunctional valve core, a one-way valve body, an oil outlet and a pressure transmission channel; a one-way valve body is arranged on the right side of the middle of the switching valve body; an oil outlet is arranged on the upper end of the one-way valve body; a pressure transmission channel is arranged inside the one-way valve body; a multifunctional valve core is arranged on the left side of the one-way valve body; a back pressure spring is arranged on the left side of the multifunctional valve core; and the No. 5 oil port and the No. 6 oil port are respectively arranged on the upper end of the multifunctional valve core;

[0011] The multifunctional valve core has the functions of reversing, quick channel, pressure sensing channel and one-way valve. Under the action of the back pressure spring, it is in the normal state, that is, the automatic booster valve is in the closed state and the hydraulic circuit is in the normally open state. When the circuit pressure rises to the predetermined value, the thrust is generated after being transmitted through the pressure transmission channel of the multifunctional valve core. When the thrust exceeds the back pressure spring force, the multifunctional valve core shifts to the working state of the booster valve and the normally open channel of the circuit closes automatically. After the booster valve works, the recoil pressure is locked by the one-way valve function of the multifunctional valve core to ensure that the high-pressure area in the circuit will not backwash. After the working area is unloaded, the multifunctional valve core immediately returns to the normal state under the action of the back pressure spring. The back pressure spring is designed with a gradient for various working circuits and users to choose from. The valve body mounting hole design is consistent with the standard electromagnetic reversing valve. After the two are replaced, the self-awakening function can be converted into remote control.

[0012] The present invention has the following advantages:

[0013] The device is reasonably designed and easy to use. It consists of three parts: a self-awakening switching valve, a proportional plunger booster valve and an automatic reversing valve. It can not only continuously output high pressure in the hydraulic circuit, but also has an automatic reversing function, without the need for an external reversing valve and power supply. Therefore, under the condition of equal efficacy, it has the characteristics of compact structure, small size and easy connection and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The specific implementation modes of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0015] Figure 1 It is a working principle diagram of an automatic control supercharger of the present invention.

[0016] Figure 2 It is an appearance diagram of an automatic control supercharger of the present invention.

[0017] Figure 3 It is a structural schematic diagram of the self-awakening switching valve of the present invention.

[0018] Figure 4 It is a schematic diagram of the left working position of the automatic control reversing valve of the present invention.

[0019] Figure 5 It is a schematic diagram of the right working position of the automatic control reversing valve of the present invention.

[0020] Figure 6 It is a schematic diagram of the left-position structure of the proportional plunger booster valve of the present invention.

[0021] Figure 7 It is a schematic diagram of the right-position structure of the proportional plunger booster valve of the present invention.

[0022] Figure 8 This is a diagram of external connection holes of the self-controlled supercharger of the present invention.

[0023] In the figure, each reference numeral is:

[0024] 1-proportional piston booster valve, 11-boosting valve body, 12-left end cover, 13-right end cover, 14-oil cylinder, 15-left plunger body, 16-check valve, 17-No. 1 oil channel, 18-left plunger, 19-No. 1 oil pool, 101-left piston, 102-No. 2 oil channel, 103-No. 3 hole, 104-No. 3 oil port, 105-No. 4 oil port, 106-variable oil channel, 107-No. 4 hole, 108-active expansion elastic member, 109-right piston, 110-No. 2 oil pool, 111- Right plunger, 112-right plunger body 2-automatic reversing valve, 21-reversing valve body, 22-reversing valve core, 23-elastic locating pin, 24-hole No. 1, 25-hole No. 2, 26-oil port No. 1, 27-oil port No. 2, 28-oil return port No. 1, 29-oil return port No. 2, 3-self-awakening switching valve, 31-switching valve body, 32-back pressure spring, 33-multi-function valve core, 34-check valve, 35-oil outlet, 36-pressure transmission channel, 37-oil port No. 5, 38-oil port No. 6. DETAILED DESCRIPTION

[0025] In order to explain the present invention more clearly, the present invention is further described below in conjunction with preferred embodiments. It should be understood by those skilled in the art that the following specific description is illustrative rather than restrictive, and should not be used to limit the scope of protection of the present invention.

[0026] like Figures 1 to 8 As shown, a self-controlled supercharger includes: an automatic reversing valve 2, a proportional plunger boosting valve 1 and a self-awakening switching valve 3; the automatic reversing valve 2 is arranged at the upper end of the proportional plunger boosting valve 1, and the self-awakening switching valve 3 is arranged on the side of the proportional plunger boosting valve 1, and the automatic reversing valve 2, the proportional plunger boosting valve 1 and the self-awakening switching valve 3 are fixed as a whole by bolts.

[0027] Furthermore, the automatic control reversing valve 2 includes a reversing valve body 21, a No. 1 hole 24, a No. 1 oil port 26, an elastic positioning pin 23, a reversing valve spool 22, a No. 2 oil port 27, a No. 1 oil return hole 28, a No. 2 hole 25 and a No. 2 oil return hole 29; a reversing valve spool 22 is arranged in a middle lateral position of the reversing valve body 21, a No. 1 oil return hole 28 is arranged on the right side of the reversing valve spool 22, and a No. 2 oil return hole 29 is arranged on the left side; at the bottom end of the reversing valve spool 22, a No. 1 hole 24, a No. 1 oil port 26, a No. 2 oil port 27 and a No. 2 hole 25 are arranged in sequence from left to right; and an elastic positioning pin 23 is arranged on the left side of the upper end of the reversing valve spool 22.

[0028] Furthermore, the proportional plunger booster valve 1 includes a booster valve body 11, an oil cylinder 14, a left end cover 12, a right end cover 13, a left plunger body 15, a one-way valve 16, a No. 1 oil passage 17, a left plunger 18, a No. 1 oil pool 19, a left piston 101, a No. 3 hole 103, a No. 3 oil port 104, a No. 4 oil port 105, a variable diameter oil passage 106, a No. 4 hole 107, an active expansion elastic member 108, a right piston 109, and a No. 2 oil pool 110. , No. 2 oil passage 102, right plunger 111 and right plunger body 112; an active expansion elastic member 108 is arranged in the center of the boost valve body 11, oil cylinders 14 are arranged on the left and right sides of the active expansion elastic member 108, a left piston 101 is arranged on the left side of the left oil cylinder 14, and a right piston 109 is arranged on the right side of the right oil cylinder 14; a No. 1 oil pool 19 is arranged on the left side of the left piston 101, a left plunger body 15 is arranged on the left side of the No. 1 oil pool 19, a left plunger body 15 is arranged on the left side of the left piston 101, and a left plunger 18 is arranged on the left center end face of the left piston 101, and the left plunger 18 passes through the center of the No. 1 oil pool 19 and the left plunger body 15 in sequence; a No. 2 oil pool 110 is arranged on the right side of the right piston 109, a right plunger body 112 is arranged on the right side of the No. 2 oil pool 110, and a right plunger 111 is arranged on the right center end face of the right piston 109, and the right plunger 111 passes through the No. 2 oil pool 110 and the right plunger body 11 in sequence 2; a one-way valve 16 is provided at the upper end of the left plunger body 15 and the right plunger body 112; a No. 3 hole 103, a No. 3 oil port 104, a No. 4 oil port 105 and a No. 4 hole 107 are provided in sequence from left to right at the upper end of the cylinder 14, and the No. 3 hole 103, the No. 3 oil port 104, the No. 4 oil port 105 and the No. 4 hole 107 are respectively connected with the No. 1 hole 24, the No. 1 oil port 26, the No. 2 oil port 27 and the No. 2 hole 25.

[0029] Furthermore, the self-awakening switching valve 3 includes a switching valve body 31, a back pressure spring 32, a No. 5 oil port 37, a No. 6 oil port 38, a multifunctional valve core 33, a one-way valve body 34, an oil outlet 35 and a pressure transmission channel 36; the one-way valve body 34 is arranged on the right side of the middle part of the switching valve body 31; the oil outlet 35 is arranged at the upper end of the one-way valve body 34, the pressure transmission channel 36 is arranged inside the one-way valve body 34, the multifunctional valve core 33 is arranged on the left side of the one-way valve body 34, the back pressure spring 32 is arranged on the left side of the multifunctional valve core 33, and the No. 5 oil port 37 and the No. 6 oil port 38 are respectively arranged at the upper end of the multifunctional valve core 33.

[0030] Booster valve working state 1:

[0031] After the oil pump is started, the oil (P) directly enters the circuit through the oil outlet 35, achieving the effect of rapid fluid replenishment. At this time, the supercharger is in a non-working state.

[0032] Booster valve working state 2:

[0033] As the pressure in the working cylinder filling circuit also rises, the circuit pressure is transmitted back from the oil outlet 35 to the self-awakening switching valve 3 and also transmitted from the pressure transmission channel 36 to the right side of the multi-functional valve core 33. When the circuit pressure rises to a certain value, the multi-functional valve core 33 is shifted to the left due to the left thrust generated by the circuit pressure, overcoming the back pressure spring 32 until the one-way valve body 34 is closed. At this time, the oil outlet 35 is closed and the No. 6 oil port 38 is opened, and P is connected to the No. 6 oil port 38).

[0034] The hydraulic pressure P enters the automatic control reversing valve 2 through the booster valve body 11. Figure 4 Taking the left position as an example, P is connected to the No. 1 oil port 26, and the No. 1 oil port 26 is aligned with the No. 3 oil port 104. P enters the left oil cylinder 14 to push the left piston 101 to move leftward, and the left plunger 18 presses the liquid in the left plunger body 15 out, and enters the booster valve body 11 through the one-way valve 16. The right piston 109 is driven by the active expansion elastic member 108 until the variable diameter oil passage 106 is connected to P and the No. 3 hole 103, and the No. 3 hole 103 is aligned with the No. 1 hole 24. P pushes the reversing valve core 22 to the right to form the right position (see Figure 5 ).

[0035] In the right working position, the hydraulic pressure P is connected to the No. 2 oil port 27, and the No. 2 oil port 27 is aligned with the No. 4 oil port 105. P enters the right oil cylinder to push the right piston 109 to move to the right. The right plunger 111 presses the liquid in the right plunger body 112 out and enters the booster valve body 11 through the right-side check valve 16. The left piston 101 is driven by the active expansion elastic member 108 until the variable diameter oil channel 106 connects P and the No. 4 hole 107, and the No. 4 hole 107 is aligned with the No. 2 hole 25. P pushes the reversing valve core 22 to the left to form the left working position (see Figure 4 ), and now returns to the working condition.

[0036] When the right piston 109 is moved to the left, the liquid in the cylinder body 14 is discharged from the No. 1 oil return port 28 through the No. 4 oil port 105 and the No. 2 oil port 27, and at the same time, the liquid in the No. 2 oil pool 110 is sucked into the right plunger body 112 through the No. 2 oil channel 102.

[0037] When the left piston 101 is moved to the right, the liquid in the cylinder body 14 is discharged from the No. 2 oil return port 29 through the No. 3 oil port 104 and the No. 1 oil port 26, and the liquid in the No. 1 oil pool 19 is sucked into the left plunger body 15 through the No. 1 oil channel 17.

[0038] The spool 22 of the reversing valve is in a depressurized state during the movement of the variable diameter oil passage 106, but the return oil pressure will continue to exert pressure on it. The elastic positioning pin 23 and the return oil pressure together ensure that the posture of the spool 22 of the reversing valve remains unchanged.

[0039] The left and right boost output oils are output from the oil hole 113 at the bottom of the boost valve body 11 after passing through the confluence path. The fast feed oil before the boost valve is started is also output from this port. At this time, hole F enters the oil inlet and hole T returns to the oil tank.

[0040] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. An automatic supercharger, characterized in that: include: An automatic reversing valve, a proportional plunger boosting valve and a self-awakening switching valve; an automatic reversing valve is arranged at the upper end of the proportional plunger boosting valve; a self-awakening switching valve is arranged on the side of the proportional plunger boosting valve; the automatic reversing valve, the proportional plunger boosting valve and the self-awakening switching valve are fixed as a whole by bolts; The automatic control reversing valve comprises a reversing valve body, a No. 1 hole, a No. 1 oil port, an elastic positioning pin, a reversing valve core, a No. 2 oil port, a No. 1 oil return hole, a No. 2 hole and a No. 2 oil return hole; a reversing valve core is arranged at a horizontal position in the middle of the reversing valve body; a No. 1 oil return hole is arranged on the right side of the reversing valve core, and a No. 2 oil return hole is arranged on the left side; a No. 1 hole, a No. 1 oil port, a No. 2 oil port and a No. 2 hole are arranged in sequence from left to right at the bottom end of the reversing valve core; an elastic positioning pin is arranged on the left side of the upper end of the reversing valve core; The proportional plunger booster valve comprises a booster valve body, an oil cylinder, a left end cover, a right end cover, a left plunger body, a one-way valve, a No. 1 oil channel, a left plunger, a No. 1 oil pool, a left piston, a No. 3 hole, a No. 3 oil port, a No. 4 oil port, a variable diameter oil channel, a No. 4 hole, an active expansion elastic member, a right piston, a No. 2 oil pool, a No. 2 oil channel, a right plunger and a right plunger body; an active expansion elastic member is arranged at the center of the booster valve body; oil cylinders are arranged on the left and right sides of the active expansion elastic member, a left piston is arranged on the left side of the left oil cylinder, and a right piston is arranged on the right side of the right oil cylinder; an No. 1 oil pool is arranged on the left side of the left piston; a left plunger body is arranged on the left side of the No. 1 oil pool; A left plunger is arranged on the left central end face of the left piston, and the left plunger passes through the center of the No. 1 oil pool and the left plunger body in sequence; a No. 2 oil pool is arranged on the right side of the right piston; a right plunger body is arranged on the right side of the No. 2 oil pool; a right plunger is arranged on the right central end face of the right piston, and the right plunger passes through the center of the No. 2 oil pool and the right plunger body in sequence; a one-way valve is arranged on the upper ends of the left plunger body and the right plunger body; a No. 3 hole, a No. 3 oil port, a No. 4 oil port and a No. 4 hole are arranged in sequence from left to right at the upper end of the oil cylinder, and the No. 3 hole, the No. 3 oil port, the No. 4 oil port and the No. 4 hole are respectively connected with the No. 1 hole, the No. 1 oil port, the No. 2 oil port and the No. 2 hole; The self-awakening switching valve includes a switching valve body, a back pressure spring, oil port No. 5, oil port No. 6, a multifunctional valve core, a one-way valve body, an oil outlet and a pressure transmission channel; a one-way valve body is arranged on the right side of the middle part of the switching valve body; an oil outlet is arranged on the upper end of the one-way valve body; a pressure transmission channel is arranged inside the one-way valve body; a multifunctional valve core is arranged on the left side of the one-way valve body; a back pressure spring is arranged on the left side of the multifunctional valve core; and oil port No. 5 and oil port No. 6 are respectively arranged on the upper end of the multifunctional valve core.

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