Hydraulic one-way cut-off quick cartridge valve and quick pressurizing injection oil way

Abstract

A hydraulic one-way cut-off quick cartridge valve comprises a valve body and a valve element assembly, a mounting cavity is formed in the valve body, and a first opening and a second opening are formed in the side wall of the mounting cavity; the valve element assembly is installed in the installation cavity and comprises a first valve head and a second valve head which are connected in a sliding mode, a supporting spring is arranged between the first valve head and the second valve head so that the first valve head can abut against the first opening, and the second opening is formed between the first valve head and the second valve head. The on-off state of the cartridge valve is changed by controlling the valve element assembly to achieve the communication state of the first opening and the second opening, so that the oil inlet valve has the function of a high-pressure isolation valve, the structure of an injection oil way is simplified, and the cost of the oil way is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of rapid pressure-boosting and injection oil circuits, and in particular relates to a hydraulic one-way cut-off quick-insertion valve and a rapid pressure-boosting and injection oil circuit. Background Art

[0002] Aluminum alloy high-pressure casting is a casting method that quickly fills molten or semi-molten aluminum alloy into the mold cavity, and then cools it under pressure to form a casting product. The rapid filling of aluminum liquid during the injection process requires a special oil circuit structure to ensure it. The main disadvantage of the rapid pressurization injection oil circuit currently on the market is that the oil in the rapid accumulator needs to pass through multiple valve bodies to enter the injection cylinder, and each valve has a stagnation period during the opening process. The stagnation period is the time required for the oil to fill the valve body and drive the valve core in the valve body to move. Since each valve body has a stagnation period during the oil circuit work, the opening speed of the entire oil circuit slows down, and the oil inlet pressure is also lost, which limits the acceleration of the piston rod of the injection cylinder when performing a rapid injection action, affecting the casting of casting products. Summary of the invention

[0003] In view of the above shortcomings, the technical problem to be solved by the present invention is to provide a hydraulic one-way cut-off quick-insertion valve and a rapid pressurization and injection oil circuit, which are used to simplify the rapid pressurization and injection oil circuit and improve the injection acceleration of the rapid pressurization and injection oil circuit.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: A hydraulic one-way shut-off quick-install valve comprises a valve body, an installation cavity is provided therein, a first opening and a second opening are provided on the side wall of the installation cavity; a valve core assembly is installed in the valve body, the valve core assembly comprises a first valve head and a second valve head which are slidably connected, a supporting spring is provided between the first valve head and the second valve head to abut the first valve head against the first opening, and the second opening is arranged between the first valve head and the second valve head.

[0005] As a preferred solution of the present invention, a guide hole is provided in the second valve head, the first valve head is slidably connected to the guide hole, a spring hole is provided in the first valve head, and both ends of the support spring are respectively in contact with the guide hole and the spring hole.

[0006] As a preferred solution of the present invention, a through hole is provided on the side wall of the first valve head, and the through hole is communicated with the spring hole.

[0007] As a preferred solution of the present invention, the first valve head is radially sealed with the installation cavity, and the first valve head and the installation cavity are axially slidingly connected, the first valve head is radially sealed with the guide hole, and the first valve head and the guide hole are axially slidingly connected.

[0008] As a preferred solution of the present invention, a sealing step is provided on the inner side of the first opening, a sealing slope is provided on the sealing step, and the first valve head is matched with the sealing slope.

[0009] As a preferred solution of the present invention, a pilot oil inlet hole and a pilot oil outlet hole are further provided on the valve body, and the second valve head abuts against the pilot oil inlet hole and the pilot oil outlet hole.

[0010] A fast booster injection oil circuit comprises an injection booster oil cylinder, a slow injection fluid circuit, a fast injection fluid circuit, a booster fluid circuit and the above-mentioned hydraulic one-way cut-off quick cartridge valve. The slow injection fluid circuit and the booster fluid circuit are connected to the injection booster oil cylinder, and the fast injection fluid circuit is connected to the injection booster oil cylinder through the hydraulic one-way cut-off quick cartridge valve.

[0011] As a preferred solution of the present invention, the fast injection flow path includes a fast accumulator and a pilot valve assembly, the fast accumulator is connected to the first opening, the second opening is connected to the injection booster cylinder, and the pilot valve assembly is connected to the installation cavity.

[0012] As a preferred solution of the present invention, the pilot valve assembly includes a pressure-injection fast oil discharge pilot valve and a pressure-injection fast oil feed pilot valve, and the pressure-injection fast oil discharge pilot valve and the pressure-injection fast oil feed pilot valve are respectively connected to the installation cavity on one side of the second valve head.

[0013] As a preferred solution of the present invention, the injection booster oil cylinder comprises an injection oil cylinder and a booster oil cylinder, both of which are provided with piston rods, and the second opening is connected to the rodless cavity of the injection oil cylinder.

[0014] The beneficial effects of the present invention are as follows: (1) the on-off state of the cartridge valve is changed by controlling the valve core assembly to realize the connection state of the first opening and the second opening, so that the oil inlet valve has the function of a high-pressure isolation valve, thereby simplifying the structure of the injection oil circuit and reducing the oil circuit cost.

[0015] (2) The hydraulic one-way shut-off quick-install valve is used to simplify the oil circuit structure, so that the number of valve bodies through which the oil flows is reduced, and the time required for the oil to fill the valve body is reduced, thereby reducing the time required for the oil circuit structure function to change and increasing the effect speed of the injection oil circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the rapid pressurization injection oil circuit.

[0017] Figure 2 It is a structural diagram of a hydraulic one-way cut-off quick-install cartridge valve.

[0018] Figure numerals: system oil source 1, slow pressure injection flow path 2, slow pressure injection oil inlet main valve 2-1, slow pressure injection oil inlet shuttle valve 2-2, slow pressure injection oil inlet pilot valve 2-3, slow pressure injection check valve 3, pressure injection booster cylinder 4, pressure injection cylinder 4-1, booster cylinder 4-2, fast accumulator 5, fast pressure injection flow path 6, hydraulic one-way stop fast cartridge valve 6-1, pressure injection fast oil inlet pilot valve 6-2, pressure injection fast oil discharge pilot valve 6-3, booster accumulator 8, booster flow path 9, booster inlet Oil main valve 9-1, boost oil inlet pilot valve 9-2, return hammer flow path 10, return hammer oil inlet main valve 10-1, return hammer oil inlet pilot valve 10-2, return hammer oil inlet check valve 11, quick oil discharge valve 12, quick oil discharge main valve 12-1, quick oil discharge pilot valve 12-2, return hammer oil return valve 13, return hammer oil return main valve 13-1, return hammer oil return pilot valve 13-2, boost cylinder oil return valve 14, boost cylinder oil return main valve 14-1, boost cylinder oil return pilot valve 14-2, oil tank 15; Valve sleeve 6-11, valve pressure cover 6-12, first valve head 6-111, support spring 6-112, second valve head 6-113, sealing slope 6-114, first opening 6-115, second opening 6-116, mounting cavity 6-117, guide hole 6-118, spring hole 6-119, through hole 6-120, oil guide groove 6-121, pilot oil inlet hole 6-122, pilot oil outlet hole 6-123. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] A hydraulic one-way shut-off quick-install valve comprises a valve body and a valve core assembly, wherein a mounting cavity 6-117 is provided in the valve body, and a first opening 6-115 and a second opening 6-116 are provided on the side wall of the mounting cavity 6-117; the valve core assembly is installed in the mounting cavity 6-117, and the valve core assembly comprises a first valve head 6-111 and a second valve head 6-113 which are slidably connected, and a supporting spring 6-112 is provided between the first valve head 6-111 and the second valve head 6-113 to abut the first valve head 6-111 against the first opening 6-115, and the second opening 6-116 is arranged between the first valve head 6-111 and the second valve head 6-113.

[0021] Among them, the valve body includes a valve sleeve 6-11 and a valve pressure cover 6-12, and an installation cavity 6-117 is provided in the valve sleeve 6-11. The valve pressure cover 6-12 is fixed on the valve sleeve 6-11, thereby closing the installation cavity 6-117. The first opening 6-115 is arranged on the end face of the valve sleeve 6-11, and the second opening 6-116 is arranged on the circumferential side wall of the valve sleeve 6-11.

[0022] A guide hole 6-118 is provided in the second valve head 6-113, the first valve head 6-111 is slidably connected to the guide hole 6-118, a spring hole 6-119 is provided in the first valve head 6-111, and the two ends of the support spring 6-112 are respectively in contact with the guide hole 6-118 and the spring hole 6-119. A through hole 6-120 is provided on the side wall of the first valve head 6-111, and the through hole 6-120 is connected to the spring hole 6-119, so that the oil flowing into the installation cavity 6-117 through the second opening 6-116 flows into the guide hole 6-118 and the spring hole 6-119. Under normal conditions, the support spring 6-112 is in an incompletely compressed state, so that the first valve head 6-111 and the second valve head 6-113 are respectively in contact with the two sides of the installation cavity 6-117. When oil with higher oil pressure flows into the second opening 6-116, the oil enters the spring hole 6-119 and the guide hole 6-118 through the through hole 6-120, so that the first valve head 6-111 and the second valve head 6-113 quickly expand, so that the first valve head 6-111 and the second valve head 6-113 respectively abut against the two sides of the mounting cavity 6-117, to prevent the high-pressure oil in the rodless cavity of the injection cylinder 4-1 from entering the first opening 6-115 when the pressurization action is performed, thereby preventing the high-pressure oil in the rodless cavity of the injection cylinder 4-1 from generating pressure shock to the pipeline of the fast injection flow path 6.

[0023] The first valve head 6-111 is radially sealed with the installation cavity 6-117, and a sealing ring is provided on the inner wall of the installation cavity 6-117 to ensure the sealing of the first valve head 6-111 and the installation cavity 6-117. At the same time, the first valve head 6-111 and the installation cavity 6-117 can slide axially; the first valve head 6-111 is radially sealed with the guide hole 6-118, and a sealing ring is provided in the guide hole 6-118 to achieve the sealing of the first valve head 6-111 and the guide hole 6-118. At the same time, the first valve head 6-111 and the guide hole 6-118 can slide radially and axially.

[0024] A sealing step is provided on the inner side of the first opening 6-115, and a sealing bevel 6-114 is provided on the sealing step. The first valve head 6-111 is matched with the sealing bevel 6-114, that is, a bevel is also provided on the circumferential side wall of the first valve head 6-111. When the bevel of the first valve head 6-111 abuts against the sealing bevel 6-114, the first opening 6-115 is in a closed state.

[0025] A pilot oil inlet hole 6-122 and a pilot oil drain hole 6-123 are provided on the valve gland 6-12. The pilot oil inlet hole 6-122 and the pilot oil drain hole 6-123 are arranged toward the end surface of the mounting cavity 6-117. Under normal conditions, due to the existence of the support spring 6-112, the second valve head 6-113 abuts against the pilot oil inlet hole 6-122 and the pilot oil drain hole 6-123. An oil guide groove 6-121 is provided at the bottom of the pilot oil inlet hole 6-122 and the pilot oil drain hole 6-123. As a preferred embodiment, the shape of the oil guide groove 6-121 can be a cross shape or a ring shape. In this embodiment, the shape of the oil guide groove 6-121 is a ring shape. Preferably, the area of ​​the oil guide groove 6-121 is larger than the cross-sectional area of ​​the first opening 6-115, thereby increasing the effective area of ​​the oil guide groove 6-121 on the second valve head 6-113 and preventing the second valve head 6-113 from being difficult to open after abutting against the end face of the valve cover 6-12.

[0026] A fast booster injection oil circuit comprises an injection booster oil cylinder 4, a slow injection fluid circuit 2, a fast injection fluid circuit 6, a booster flow circuit 9, and a hydraulic one-way cut-off quick cartridge valve 6-1. The slow injection fluid circuit 2 and the booster flow circuit 9 are connected to the injection booster oil cylinder 4, and the fast injection fluid circuit 6 is connected to the injection booster oil cylinder 4 via the hydraulic one-way cut-off quick cartridge valve 6-1.

[0027] The injection booster cylinder 4 includes an injection cylinder 4-1 and a booster cylinder 4-2 which are connected to each other. The booster cylinder 4-2 is arranged at the rear end of the injection cylinder 4-1. The injection cylinder 4-1 is increased by the booster cylinder 4-2. Piston rods are arranged in the injection cylinder 4-1 and the booster cylinder 4-2. The injection cylinder 4-1 is divided into a rod chamber and a rodless chamber by the piston rod in the injection cylinder 4-1. Similarly, the booster cylinder 4-2 is divided into a rod chamber and a rodless chamber by the piston rod in the booster cylinder 4-2. The second opening 6-116 is connected to the rodless chamber of the injection cylinder 4-1.

[0028] Among them, the slow injection flow path 2 includes a slow injection oil inlet main valve 2-1, a slow injection oil inlet shuttle valve 2-2, a slow injection oil inlet pilot valve 2-3, a slow injection check valve 3 and a system oil source 1, the system oil source 1 is connected to the slow injection oil inlet shuttle valve 2-2, the slow injection oil inlet shuttle valve 2-2 is connected to the injection slow oil inlet check valve 3, the injection slow oil inlet check valve 3 is connected to the rodless chamber of the injection cylinder 4-1, the slow injection oil inlet shuttle valve 2-2, the slow injection oil inlet pilot valve 2-3 are connected to the slow injection oil inlet main valve 2-1, and are used to control the operation of the slow injection oil inlet main valve 2-1.

[0029] A quick oil drain circuit 12 is connected to one side of the rod chamber of the injection cylinder 4-1, and a quick oil drain main valve 12-1, a quick oil drain pilot valve 12-2 and an oil tank 15 are connected to the quick oil drain circuit 12. The oil tank 15 is connected to the rod chamber of the injection cylinder 4-1 through the quick oil drain main valve 12-1, and the quick oil drain pilot valve 12-2 is connected to the quick oil drain main valve 12-1.

[0030] When performing the slow injection action, the slow injection oil inlet pilot valve 2-3 is energized, the slow injection oil inlet main valve 2-1 is opened, and the system oil enters the rodless chamber of the injection cylinder 4-1 through the slow injection oil inlet main valve 2-1 and the slow injection check valve 3; the fast oil discharge pilot valve 12-2 is energized, the fast oil discharge main valve 12-1 is opened, and the oil in the rod chamber of the injection cylinder 4-1 is discharged into the oil tank 15 through the fast oil discharge main valve 12-1, and the piston rod of the injection cylinder 4-1 extends. The pressure-injection fast oil-inlet pilot valve 6-2 is energized, and the oil enters the oil guide groove 6-121 at the upper end of the valve sleeve 6-11 through the pressure-injection fast oil-inlet pilot valve 6-2 and the pilot oil inlet hole 6-122 of the valve cover 6-12. Under the action of the oil pressure of the fast accumulator 5, the first valve head 6-111 is pushed downward together until the lower side of the first valve head 6-111 is pressed tightly against the sealing inclined surface of the valve sleeve 6-11, and the second valve head 6-113 is pressed tightly against the upper end surface of the valve core 6-111. At this time, the cartridge valve 6-11 is closed, and the first opening 6-115 is blocked from the second opening 6-116.

[0031] The fast injection flow path 6 includes a fast accumulator 5 and a pilot valve assembly, the fast accumulator 5 is connected to the first opening 6-115, the second opening 6-116 is connected to the rodless chamber of the injection cylinder 4-1, and the pilot valve assembly is connected to the installation chamber 6-117; the pilot valve assembly includes an injection fast oil discharge pilot valve 6-3 and an injection fast oil feed pilot valve 6-2, the injection fast oil discharge pilot valve 6-3 and the injection fast oil feed pilot valve 6-2 are respectively connected to the installation chamber 6-117 on one side of the second valve head 6-113.

[0032] When performing the fast injection action, the slow injection oil inlet pilot valve 2-3 loses power, and the slow injection oil inlet main valve 2-1 is closed. The injection fast oil inlet pilot valve 6-2 loses power, and the injection fast oil discharge pilot valve 6-3 is energized, and the pilot oil at the upper end of the valve sleeve 6-11 returns to the oil tank 15 through the pilot oil discharge hole 6-123 of the cartridge valve gland 6-12 and the injection fast oil discharge pilot valve 6-3. Under the pressure of the oil in the first opening 6-115 of the cartridge valve 6-11, the first valve head 6-111, the support spring 6-112 and the second valve head 6-113 move upward until the upper end surface of the first valve head 6-111 is pressed against the second valve head 6-113, and the upper end surface of the second valve head 6-113 is pressed against the cartridge valve gland body 6-121. At this time, the hydraulic one-way stop fast cartridge valve 6-1 is opened, and the oil in the first opening 6-115 flows to the second opening 6-116, and then enters the rodless cavity of the injection cylinder 4-1, pushing the piston rod of the injection cylinder 4-1; the quick oil discharge pilot valve 12-2 is energized, and the quick oil discharge main valve 12-1 is opened, and the oil in the rod cavity of the injection cylinder 4-1 is discharged into the oil tank 15 through the quick oil discharge main valve 12-1, and the piston rod of the injection cylinder 4-1 extends. The piston rod of the injection cylinder 4-1 extends.

[0033] The boost flow path 9 includes a boost accumulator 8, a boost oil inlet main valve 9-1, and a boost oil inlet pilot valve 9-2. The boost accumulator 8 is connected to the rodless chamber of the boost cylinder 4-2 through the boost oil inlet main valve 9-1, and the boost oil inlet pilot valve 9-2 is connected to the boost oil inlet main valve 9-1. A boost cylinder return valve 14 is also connected to the rodless chamber of the boost cylinder 4-2. The boost cylinder return valve 14 includes a boost cylinder return main valve 14-1 and a boost cylinder return pilot valve 14-2. The rodless chamber of the boost cylinder 4-2 is connected to the oil tank 15 through the boost cylinder return main valve 14-1, and the boost cylinder return pilot valve 14-2 is connected to the boost cylinder return main valve 14-1.

[0034] When performing the boosting action, the boosting oil inlet pilot valve 9-2 is energized, and the boosting oil inlet main valve 9-1 is opened; the oil in the boosting accumulator 8 enters the rodless chamber of the boosting oil cylinder 4-2 through the boosting oil inlet main valve 9-1, and the gas in the rodless chamber of the boosting oil cylinder 4-2 is directly discharged into the oil tank 15, and the quick oil discharge pilot valve 12-2 is energized, and the quick oil discharge main valve 12-1 is opened, and the rod chamber oil of the injection oil cylinder 4-1 is discharged into the oil tank 15 through the quick oil discharge main valve 12-1, and the piston of the boosting oil cylinder 4-2 extends, and at the same time pushes the piston rod of the injection oil cylinder 4-1 to extend. When the piston area of ​​the boosting oil cylinder 4-2 is larger than the extension rod area, the pressure in the rodless chamber of the injection oil cylinder 4-1 increases and is much higher than the pressure of the injection accumulator 5. In order to achieve a rapid increase in the rodless chamber pressure of the injection cylinder 4-1 and protect the injection fast oil inlet pilot valve 6-2 and the injection fast oil discharge pilot valve 6-3, the hydraulic one-way stop quick cartridge valve 6-1 needs to have a quick closing function. When the pressure in the rodless chamber of the injection cylinder 4-1 increases, the high-pressure oil enters the valve core 6-111 from the second opening 6-116 through the through holes 6-120 around the first valve head 6-111, and the pressure oil pushes the second valve head 6-113 upward to keep it pressed against the valve cover 6-12. Under the action of the pressure oil inside and on the first valve head 6-111 and the supporting spring 6-112, the first valve head 6-111 moves downward until it is pressed against the sealing slope 6-114. At this time, the hydraulic one-way stop quick-install valve 6-1 is closed, the first opening 6-115 and the second opening 6-116 are blocked, and the oil in the second opening 6-116 cannot flow into the first opening 6-115, thereby realizing the rapid closing of the hydraulic one-way stop quick-install valve 6-1.

[0035] The rod chamber of the injection oil cylinder 4-1 is connected with a return hammer flow path 10 and a quick oil drain valve 12. Among them, the return hammer flow path 10 is provided with a return hammer oil inlet main valve 10-1 and a return hammer oil inlet pilot valve 10-2. The return hammer oil inlet main valve 10-1 is connected to the rod chamber of the injection oil cylinder 4-1 through a return hammer oil inlet check valve 11, and the return hammer oil inlet main valve 10-1 is connected to the quick system oil source 1, and the return hammer oil inlet pilot valve 10-2 is connected to the return hammer oil inlet main valve 10-1 to control the operation of the return hammer oil inlet main valve 10-1. The quick oil drain valve 12 includes a quick oil drain main valve 12-1 and a quick oil drain pilot valve 12-2. The rod chamber of the injection oil cylinder 4-1 is connected to the oil tank 15 through the quick oil drain main valve 12-1, and the quick oil drain pilot valve 12-2 is connected to the quick oil drain main valve 12-1 to control the quick oil drain main valve 12-1.

[0036] A return hammer oil return valve 13 is connected to the rodless chamber of the injection cylinder 4-1. The return hammer oil return valve 13 includes a return hammer oil return main valve 13-1 and a return hammer oil return pilot valve 13-2. The rodless chamber of the injection cylinder 4-1 is connected to the oil tank 15 through the return hammer oil return main valve 13-1. The return hammer oil return pilot valve 13-2 is connected to the return hammer oil return main valve 13-1 to control the operation of the return hammer oil return main valve 13-1.

[0037] The piston rods of the injection cylinder 4-1 and the boost cylinder 4-2 retract. When the quick oil discharge pilot valve 12-2 loses power, the quick oil discharge main valve 12-1 is closed; the return hammer oil inlet pilot valve 10-2 is energized, the return hammer oil inlet main valve 10-1 is opened, and the oil from the system oil source 1 enters the rod chamber of the injection cylinder 4-1 through the return hammer oil inlet main valve 10-1 and the return hammer oil inlet check valve 11; the piston rod of the injection cylinder 4-1 retracts and pushes the piston rod of the boost cylinder 4-2 to retract; The return hammer oil return pilot valve 13-2 loses power, the return hammer oil return main valve 13-1 opens, and the oil in the rodless chamber of the injection cylinder 4-1 returns to the oil tank 15 through the return hammer oil return main valve 13-1; the boost cylinder oil return pilot valve 14-2 loses power, the boost cylinder oil return main valve 14-1 opens, and the oil in the rodless chamber of the boost cylinder 4-2 returns to the oil tank 15 through the boost cylinder oil return main valve 14-1, and the piston rods of the injection cylinder 4-1 and the boost cylinder 4-2 both retract.

[0038] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0039] Although this article uses more terms corresponding to the figure marks in the figures, it does not exclude the possibility of using other terms; these terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. A hydraulic one-way stop quick-install valve, characterized in that: include A valve body having an installation cavity (6-117) therein, and a first opening (6-115) and a second opening (6-116) are provided on a side wall of the installation cavity (6-117); A valve core assembly is installed in an installation cavity (6-117), the valve core assembly comprising a first valve head (6-111) and a second valve head (6-113) which are slidably connected, a through hole (6-120) is provided on the first valve head (6-111) and / or the second valve head (6-113), oil is directed to between the first valve head (6-111) and the second valve head (6-113) through the through hole (6-120), so that the first valve head (6-111) and the second valve head (6-113) are respectively abutted against the first opening (6-115) and the inner wall of the installation cavity (6-117), and the second opening (6-116) is located between the first valve head (6-111) and the second valve head (6-113).

2. A hydraulic one-way shut-off quick-installation valve according to claim 1, characterized in that: A supporting spring (6-112) is provided between the first valve head (6-111) and the second valve head (6-113).

3. A hydraulic one-way shut-off quick-installation valve according to claim 2, characterized in that: A guide hole (6-118) is provided in the second valve head (6-113), the first valve head (6-111) is slidably connected to the guide hole (6-118), a spring hole (6-119) is provided in the first valve head (6-111), and two ends of the support spring (6-112) are respectively in contact with the guide hole (6-118) and the spring hole (6-119).

4. A hydraulic one-way shut-off quick-installation cartridge valve according to claim 2, characterized in that: The first valve head (6-111) is radially sealed with the mounting cavity (6-117), and the first valve head (6-111) and the mounting cavity (6-117) are axially slidably connected; the first valve head (6-111) and the guide hole (6-118) are radially sealed, and the first valve head (6-111) and the guide hole (6-118) are radially slidably connected.

5. The hydraulic one-way shut-off quick-install valve according to claim 1, characterized in that: A sealing step is provided on the inner side of the first opening (6-115), a sealing inclined surface (6-114) is provided on the sealing step, and the first valve head (6-111) is adapted to the sealing inclined surface (6-114).

6. A hydraulic one-way shut-off quick-installation cartridge valve according to claim 1, characterized in that: The valve body is also provided with a pilot oil inlet hole (6-122) and a pilot oil discharge hole (6-123), and the second valve head (6-113) abuts against the pilot oil inlet hole (6-122) and the pilot oil discharge hole (6-123); An oil guide groove (6-121) is provided at the bottom of the pilot oil inlet hole (6-122) and the pilot oil discharge hole (6-123); the area of ​​the oil guide groove (6-121) is larger than the cross-sectional area of ​​the first opening (6-115).

7. A rapid pressure-increasing injection oil circuit, characterized in that: It comprises an injection booster cylinder (4), a slow injection fluid path (2), a fast injection fluid path (6), a booster flow path (9), and a hydraulic one-way shut-off quick-insertion valve (6-1) as claimed in any one of claims 1 to 6, wherein the slow injection fluid path (2) and the booster flow path (9) are connected to the injection booster cylinder (4), and the fast injection fluid path (6) is connected to the injection booster cylinder (4) via the hydraulic one-way shut-off quick-insertion valve (6-1).

8. The rapid pressure-increasing injection oil circuit according to claim 7, characterized in that: The fast injection flow path (6) comprises a fast accumulator (5) and a pilot valve assembly, the fast accumulator (5) is connected to a first opening (6-115), the second opening (6-116) is connected to an injection booster oil cylinder (4), and the pilot valve assembly is connected to a mounting cavity (6-117).

9. A rapid pressure-increasing injection oil circuit according to claim 8, characterized in that: The pilot valve assembly comprises a pressure-injection fast oil discharge pilot valve (6-3) and a pressure-injection fast oil feed pilot valve (6-2), and the pressure-injection fast oil discharge pilot valve (6-3) and the pressure-injection fast oil feed pilot valve (6-2) are respectively connected to the mounting cavity (6-117) on one side of the second valve head (6-113).

10. The rapid pressure-increasing injection oil circuit according to claim 8, characterized in that: The injection-boosting oil cylinder (4) comprises an injection-boosting oil cylinder (4-1) and a boosting oil cylinder (4-2), each of which is provided with a piston rod, and the second opening (6-116) is connected to the rodless chamber of the injection-boosting oil cylinder (4-1).

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