Pressurizing system of hydraulic liquid injection pump

Abstract

A hydraulic liquid injection pump pressurization system comprises a box body, a pressurization cylinder body is arranged in the box body, a piston assembly is arranged in the pressurization cylinder body, and the pressurization cylinder body is divided into an X cavity, a Y cavity, a Z cavity and a U cavity, a supporting plate is arranged in the box body, the bottom of the supporting plate is connected with a supporting rod, the bottom of the supporting rod is connected with a bearing block installed on the side face of the box body, and the pressure cylinder set is located on the bearing block. The Z cavity and the U cavity are connected with the emulsion tank through a first liquid path and connected with the high-pressure oil outlet through a second liquid path, and the first liquid path and the second liquid path are each provided with a one-way valve. Therefore, the reversing of static pressure water is more accurate and timely, the automation degree of the hydraulic liquid injection pump is improved, and the liquid injection pump can be conveniently used in a narrow underground space.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid injection pumps, in particular to a hydraulic liquid injection pump pressure boosting system. Background Art

[0002] Temporary support is needed when carrying out underground operations such as tunnel maintenance, excavation and coal mining in coal mines. It is an important part of ensuring safety in mines, and the stability of temporary support is related to safe work in mines. Existing temporary support usually takes the form of a single hydraulic support, which has the advantages of high strength and safety. When supporting with a single hydraulic support, an injection pump is needed to lift the extended end of the hydraulic support. The injection pump pressurizes the emulsion and presses it into the hydraulic support. Usually, a two-way pipeline circulation booster is used to pump the emulsified oil into the high-pressure oil outlet in a left-right circulation, and then add it to the hydraulic support. However, the existing booster system needs to manually change the flow direction of the static water when in use to achieve left-right circulation boosting. Manual operation of the valve requires staff to observe the booster system at all times to ensure timely reversal. On the other hand, in the narrow underground space, the operation is inconvenient and there are many disadvantages. Utility Model Content

[0003] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides a hydraulic injection pump boosting system.

[0004] The technical solution of this utility model is as follows:

[0005] A hydraulic injection pump boosting system comprises a box body, a boosting cylinder body is arranged in the box body, and a piston assembly is arranged in the boosting cylinder body, and the boosting cylinder body is divided into a symmetrical X cavity and a Y cavity and a symmetrical Z cavity and a U cavity;

[0006] A support plate is provided in the box body, a support rod is connected to the bottom of the support plate, and a support block installed on the side of the box body is connected to the bottom of the support rod, and the booster cylinder group is located on the support block;

[0007] The Z chamber and the U chamber are respectively connected to the emulsion tank through a first liquid path, and connected to the high-pressure oil outlet through a second liquid path, and both the first liquid path and the second liquid path are provided with a one-way valve;

[0008] The upper end of the box body is provided with a static pressure water inlet, which is connected to a two-way hydraulic lock through a first water channel, and is respectively connected to the X cavity and the Y cavity through two second water channels, and the two-way hydraulic lock is connected to a three-position four-way hydraulically controlled reversing valve through a third water channel;

[0009] On both sides of the supercharging cylinder block, two groups of reversing control valves are symmetrically arranged. The first waterway is connected to the water inlets of the two groups of reversing control valves respectively through two fourth waterways. The water outlets of the reversing control valves are connected to a three-position four-way hydraulically controlled reversing valve through a fifth waterway. The control end of the reversing control valve extends into the supercharging cylinder body, and the piston assembly can move to abut against the control end and connect the water inlet and the water outlet.

[0010] The specific design of the supercharging cylinder group and the piston assembly is that the supercharging cylinder group includes a main cylinder, and two groups of auxiliary cylinders are symmetrically communicated on both sides of the main cylinder. The piston assembly includes a first piston in the main cylinder, and the first piston is connected to a second piston located in the auxiliary cylinder through two piston rods.

[0011] In order to stabilize the pressure of the entire system after supercharging and avoid damaging the equipment due to excessive pressure, a high-low pressure mixing valve is arranged on the second waterway, and the first waterway is connected to the high-low pressure mixing valve through a sixth waterway.

[0012] In order to facilitate the discharge of water in the X chamber or the Y chamber, the drain port of the two-way hydraulic lock is connected to a drain pipe, and the X chamber and the Y chamber can be drained through the third waterway.

[0013] In order to facilitate the connection of the first waterway, the two-way hydraulic lock and the sixth waterway, the first waterway is connected to a three-way pipe, and the three-way pipe is respectively connected to the two-way hydraulic lock and the sixth waterway.

[0014] In order to facilitate the connection of the first waterway and the two fourth waterways, a four-way pipe is connected to the water inlet of the two-way hydraulic lock, and the four-way pipe is respectively communicated with the first waterway and the fourth waterway.

[0015] The specific design of the reversing control valve is that the reversing control valve includes a housing. One end of the housing is installed with a sleeve, and the sleeve is installed on the side of the main cylinder. The control end is a push rod that penetrates the sleeve into the main cylinder;

[0016] The other end of the housing is installed with a water inlet cylinder, and the water inlet at the water inlet cylinder is connected to the fourth waterway. The side of the housing is provided with a water outlet for connecting the fifth waterway. A stop block is arranged in the housing on the side close to the water inlet cylinder, and the stop block is horizontally provided with a water passing hole that can connect the water inlet and the water outlet;

[0017] A movable rod is horizontally and slidably arranged in the water passing hole, and a stop bead is installed at one end of the movable rod close to the water inlet cylinder, which can block the water passing hole. The movable rod extends toward the push rod side. The push rod can push the movable rod toward the water inlet cylinder direction through an elastic component and can be reset through the elastic component.

[0018] To improve the stability of the movable rod during movement, the movable rod includes a thin rod end with a diameter smaller than the water passing hole and a thick rod end with a diameter larger than the water passing hole. A limiting cylinder for limiting the thick rod end is arranged in the shell body, and the thick rod end is slidably connected with the inner ring of the limiting cylinder.

[0019] To make the support of the supporting block more stable, the support plate is located above the main cylinder, and the position where the supporting block contacts the main cylinder is set to be arc-shaped.

[0020] The beneficial effects of the present utility model are as follows: The present utility model is a hydraulic liquid injection pump pressurization system. Firstly, static pressure water is injected into the pressurization cylinder body, which can pressurize the emulsion liquid of the whole system, and then it is discharged to the high-pressure oil outlet and added to the hydraulic support, enabling the jacking of the hydraulic support. Secondly, through the setting of the three-position four-way hydraulic control reversing valve, the two-way hydraulic lock, and the reversing control valve, the static pressure water can be automatically circulated and added to the X chamber and the Y chamber, and then the piston can cycle to drive the Z chamber and the U chamber to suck and discharge liquid, realizing the automatic pressurization of the emulsion liquid. It replaces the traditional form of manually changing the direction of the static pressure water, making the reversing of the static pressure water more accurate and timely, improving the automation degree of the hydraulic liquid injection pump, and facilitating the use of the liquid injection pump in a narrow underground space. Description of the Drawings

[0021] By reading the detailed description of the preferred embodiments below, the solutions and advantages of the present application will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present utility model.

[0022] In the drawings:

[0023] Figure 1 is a schematic diagram of the internal structure of the liquid injection pump;

[0024] Figure 2 is a schematic diagram of the structure of the pressurization cylinder body;

[0025] Figure 3 is a side view of the installation structure of the pressurization cylinder body;

[0026] Figure 4 is a schematic diagram of the structure of the reversing control valve;

[0027] The components represented by the reference numerals in the drawings are:

[0028] 1. Box; 2. Booster cylinder; 201. X chamber; 202. Y chamber; 203. Z chamber; 204. U chamber; 205. Main cylinder; 206. Auxiliary cylinder; 3. Piston assembly; 301. First piston; 302. Piston rod; 303. Second piston; 4. Support plate; 5. Support rod; 6. Support block; 7. First liquid circuit; 8. Emulsion tank; 9. Second liquid circuit; 10. High-pressure oil outlet; 11. Check valve; 12. Static pressure water outlet; 13. First water circuit; 14. Two-way hydraulic lock; 15. Second water circuit; 16. Third water circuit; 17. Three-position four-way hydraulically controlled reversing valve; 18. Reversing control valve; 1801. Shell; 1802. Sleeve; 1803. Push rod; 1804, water inlet cylinder; 1805, water inlet; 1806, water outlet; 1807, stopper; 1808, water hole; 1809, movable rod; 1810, stopper bead; 1811, limit cylinder; 1812, push rod; 1813, ring; 1814, limit ring; 1815, first spring; 1816, water inlet chamber; 1817, second spring; 1818, slide seat; 1819, through hole; 19, fourth waterway; 20, fifth waterway; 21, high and low pressure mixing valve; 22, sixth waterway; 23, drain pipe; 24, three-way pipe; 25, four-way pipe; 26, seventh waterway; 27, proportioning valve; 28, oil inlet pipe; 29, liquid outlet pipe. DETAILED DESCRIPTION

[0029] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0030] Example

[0031] This embodiment provides a hydraulic injection pump booster system. Figure 1 , comprising a box body 1, wherein a booster cylinder 2 is arranged in the box body 1, combined with Figure 2 Specifically, the boost cylinder group includes a main cylinder 205, and two groups of auxiliary cylinders 206 are symmetrically connected on both sides of the main cylinder 205. The cylinder diameter of the main cylinder 205 is larger than the cylinder diameters of the two groups of auxiliary cylinders 206, and a piston assembly 3 is arranged in the boost cylinder body 2, and the piston assembly 3 includes a first piston 301 in the main cylinder 205, and the first piston 301 is connected to a second piston 303 located in the auxiliary cylinder 206 through two piston rods 302. Correspondingly, the diameter of the first piston 301 is larger than the diameter of the second piston 303. The first piston 301 can drive the two second pistons 303 to slide in the auxiliary cylinder 206, dividing the boost cylinder body 2 into symmetrical X-cavity 201 and Y-cavity 202 and symmetrical Z-cavity 203 and U-cavity 204, that is, the X-cavity 201 and the Y-cavity 202 are located on both sides of the first piston 301, and the Z-cavity 203 and the U-cavity 204 are respectively located between the two second pistons 303 and the side walls of the auxiliary cylinder 206.

[0032] In this embodiment, the fixing method of the boost cylinder group is to combine Figure 3, a support plate 4 is arranged in the box body 1. The support plate 4 is fixedly connected to the rear inner wall of the box body 1. The support plate 4 is located above the main cylinder 205. A support rod 5 is connected to the bottom of the support plate 4. The support rod 5 is located on the front side of the main cylinder 205. And the bottom of the support rod 5 is connected to a supporting block 6 installed on the side of the box body 1. The supporting block 6 is connected to the rear inner wall of the box body 1. And the boosting cylinder group is located on the supporting block 6. And, the position where the supporting block 6 contacts the main cylinder 205 is set to be arc-shaped, so that the main cylinder 205 is located at the arc position of the supporting block 6 to support it.

[0033] On the basis of the above structure, the Z chamber 203 and the U chamber 204 are respectively connected to an emulsion tank 8 through a first liquid path 7. The emulsion tank 8 is arranged outside the box body 1 and is formed by proportionally mixing static pressure water and emulsion oil through an emulsion proportioning system. The proportioning of the emulsion and the related components can adopt the existing technology. Connecting the first liquid path 7 to the emulsion tank 8 can realize liquid suction, which will not be elaborated here. The proportioning valve is arranged at the bottom inside the box body 1 and is connected to a high-pressure oil outlet 10 through a second liquid path 9. And one-way valves 11 are arranged on both the first liquid path 7 and the second liquid path 9. The setting of the one-way valves 11 enables the emulsion to flow from the emulsion tank 8 to the Z chamber 203 or the U chamber 204, while the emulsion in the Z chamber 203 or the U chamber 204 can only flow towards the high-pressure oil outlet 10;

[0034] A static pressure water inlet 12 is arranged at the upper end of the box body 1. And the static pressure water inlet 12 is connected to a first water path 13. The static pressure water inlet 12 is communicated with the water inlet position of the proportioning valve 27 through a seventh water path 26, such as Figure 1 At the lower left corner inside the box body 1, the bottom marked as truncated is the oil inlet pipe. The bottom of the proportioning valve is connected to an emulsion oil tank through an oil inlet pipe 28, and the side is connected to the emulsion tank 8 outside the box body 1 through an outlet pipe 29. And a high-low pressure mixing valve 21 is arranged on the second liquid path 9. And the first water path 13 is connected to the high-low pressure mixing valve 21 through a sixth water path 22. In order to facilitate the connection of the first water path 13, the two-way hydraulic lock 14 and the sixth water path 22, the first water path 13 is connected to a three-way pipe 24. And the three-way pipe 24 is respectively connected to the two-way hydraulic lock 14 and the sixth water path 22. Through the setting of the high-low pressure mixing valve 21, the static pressure water can be mixed with the pressurized emulsion to stabilize the whole oil pressure and avoid damaging the equipment due to excessive pressure.

[0035] The commutation of the static pressure water refers to the cyclic entry into the X chamber 201 and the Y chamber 202, and then the first piston 301 is pushed to move cyclically left and right. The innovation point of this solution different from the prior art is that it can automatically change the direction of the static pressure water. Among them, the first waterway 13 is connected with a two-way hydraulic lock 14. The two-way hydraulic lock 14 uses existing components, and it is connected to the X chamber 201 and the Y chamber 202 respectively through two second waterways 15. The static pressure water enters the X chamber 201 or the Y chamber 202 through the first waterway 13 and the second waterway 15. Therefore, it is necessary to change the connection between the first waterway 13 and the two second waterways 15, and then change the flow direction of the static pressure water. The two-way hydraulic lock 14 is connected with a three-position four-way hydraulic control reversing valve 17 through a third waterway 16. The three-position four-way hydraulic control reversing valve 17 uses existing components and can achieve commutation. This solution only improves the flow mode of the liquid driving its commutation, so the specific internal structure is not described in detail. Moreover, the drain port of the two-way hydraulic lock 14 is connected with a drain pipe 23, which can drain water from the X chamber 201 and the Y chamber 202 through the third waterway 16. The drain pipe 23 is connected to the outside of the box body 1. When the X chamber 201 or the Y chamber 202 enters water through the second waterway 15, at the same time, the static pressure water enters the two-way hydraulic lock 14, and the two-way hydraulic lock 14 is controlled to drain water from the other chamber. The water flows out from the second waterway 15 and is discharged at the drain pipe 23. The three-position four-way hydraulic control reversing valve 17 can control the connection between the first water pipe and the two second water pipes, and then control the static pressure water to enter the X chamber 201 or the Y chamber 202. At the same time, the two-way hydraulic lock 14 controls the relative chamber to drain water. Controlling the drainage is a relatively common use mode of the two-way hydraulic lock 14, and the specific internal structure is not described in detail.

[0036] On the basis of the above structure, the control of the three-position four-way hydraulic control reversing valve 17 is based on hydraulic control, and the liquid controlling its direction change is realized through a reversing control valve 18. Two groups of reversing control valves 18 are symmetrically arranged on both sides of the booster cylinder body 2. The first waterway 13 is connected to the water inlets 1805 of the two groups of reversing control valves 18 respectively through two fourth waterways 19. In order to facilitate the connection of the first waterway 13 and the two fourth waterways 19, a four-way pipe 25 is connected at the water inlet of the two-way hydraulic lock 14, and the four-way pipe 25 is respectively connected to the first waterway 13 and the fourth waterway 19. The water outlets 1806 of the reversing control valve 18 are connected to the three-position four-way hydraulic control reversing valve 17 through a fifth waterway 20. The two fifth waterways 20 circulate water, and then the three-position four-way hydraulic control reversing valve 17 changes the static pressure water to enter the second water pipes in different directions. The control end of the reversing control valve 18 extends into the booster cylinder body 2, and the piston assembly 3 can move to abut against the control end and connect the water inlet 1805 and the water outlet 1806.

[0037] Specifically, in combination with Figure 4The reversing control valve 18 includes a housing 1801, one end of which is mounted with a sleeve 1802, the sleeve 1802 and the housing 1801 are threadedly mounted, and the sleeve 1802 is mounted on the side of the master cylinder 205, the control end is a push rod 1803, which passes through the sleeve 1802 to the master cylinder 205, and the end of the sleeve 1802 away from the housing 1801 can limit the push rod 1803 to prevent the push rod 1803 from moving out of the sleeve 1 802, during the sliding process, the first piston 301 can push the push rod 1803 to move in the direction of moving out of the main cylinder 205, and a water inlet cylinder 1804 is installed at the other end of the housing 1801, and the water inlet 1805 at the water inlet cylinder 1804 is connected to the fourth waterway 19, and a water outlet 1806 is provided on the side of the housing 1801 for connecting to the fifth waterway 20, and the static pressure water enters at the water inlet 1805 and flows out at the water outlet 1806;

[0038] In order to realize the connection and disconnection of the water inlet 1805 and the water outlet 1806 controlled by the push rod 1803, a block 1807 is provided in the shell 1801 on the side of the water outlet 1806 close to the water inlet cylinder 1804, and the block 1807 can block the shell 1801. However, in order to allow the static pressure water to pass through, the block 1807 is horizontally provided with a water hole 1808, which can connect the water inlet 1805 and the water outlet 1806, and a movable rod 1809 is horizontally slidably provided in the water hole 1808, and a blocking bead 1810 is installed on the end of the movable rod 1809 close to the water inlet cylinder 1804, which can block the water hole 1808. 9 can drive the blocking column to leave the water hole 1808, so that the blocking column releases the blockage of the water hole 1808, and then the water inlet 1805 and the water outlet 1806 are connected. Secondly, the movable rod 1809 extends toward the side of the push rod 1803, and the push rod 1803 can push the movable rod 1809 to move toward the water inlet cylinder 1804 through the elastic component, and can be reset through the elastic component. Through the setting of the push rod 1803 and the elastic component, the push rod 1803 can push the movable rod 1809 to drive the blocking column to move, and when the first piston 301 releases the resistance to the push rod 1803, the elastic component can drive the push rod 1803 to reset.

[0039] Moreover, the movable rod 1809 includes a thin rod end with a smaller diameter than the water hole 1808 and a thick rod end with a larger diameter than the water hole 1808, and a limiting cylinder 1811 for limiting the thick rod end is arranged in the shell 1801, and the thick rod end is slidingly connected to the inner ring of the limiting cylinder 1811, so that when the movable rod 1809 moves, the thick rod end can slide along the limiting cylinder 1811, and static pressure water passes through the gap between the thin rod end and the water hole 1808.

[0040] Specifically, the elastic component specifically includes a push rod 1812 horizontally slidably arranged in the shell 1801, and one end of the push rod 1812 extends into the sleeve 1802, the push rod 1803 can push the push rod 1812 to slide in the horizontal direction, and then the push rod 1812 can push the movable rod 1809 to move, the inner wall of the shell 1801 is provided with a ring 1813, and the push rod 1812 is slidably arranged with the inner wall of the ring 1813, the outer edge surface of the push rod 1812 is installed with a limit ring 1814, and a first spring 1815 is arranged between the limit ring 1814 and the convex ring, through the arrangement of the first spring 1815, the limit ring 1814 can be against the sleeve 1802, when the push rod 1812 moves, the limit ring 1814 compresses the first spring 1815, after the push on the push rod 1812 is released, the first spring 1815 15 can drive the push rod 1812 to reset, and then push the push rod 1803 to reset, and in order to facilitate the reset of the movable rod 1809, a water inlet chamber 1816 connected with the water inlet 1805 is opened in the water inlet cylinder 1804, and a second spring 1817 is arranged in the water inlet chamber 1816, and the second spring 1817 is connected with a slide seat 1818 at one end close to the blocking bead 1810, and the slide seat 1818 is provided with a horizontal through hole 1819 to ensure that static pressure water can pass through, and the blocking bead 1810 can move to abut against the slide seat 1818, that is, the push rod 1812 can push the movable rod 1809 to drive the blocking column and the slide seat 1818 to abut against each other, and then compress the second spring 1817. After the thrust is removed, the second spring 1817 can push the blocking bead 1810 and the movable rod 1809 to reset and block the water hole 1808.

[0041] Specifically, during liquid injection, static pressure water enters the Y chamber 202, and at the same time, the two-way hydraulic lock 14 controls the drainage of the X chamber 201, pushing the first piston 301 to continuously move to the left. During this process, the U chamber 204 sucks liquid, and the Z chamber 203 discharges liquid. The emulsion in the Z chamber 203 is discharged from the high-pressure oil outlet 10 through the second liquid path 9 until the push rod 1803 is pushed to move, and then the movable rod 1809 is driven to drive the ball 1810 to move, so that the water inlet 1805 and the water outlet 1806 of the reversing control valve 18 are communicated. The static pressure water enters the reversing control valve 18 on the side of the X chamber 201 from the first water path 13 through the fourth water path 19, and enters the three-position four-way hydraulic control reversing valve 17 through the fifth water path 20 at the water outlet 1806, controlling the static pressure water to enter the X chamber 201 through the second water path 15 communicated with the X chamber 201. At the same time, the two-way hydraulic lock 14 controls the drainage of the Y chamber 202, pushing the first piston 301 to move to the right. At this time, the left reversing control valve 18 automatically resets to the closed state, and at the same time, the left second piston 303 moves to the right, sucking the emulsion into the Z chamber 203. The right second piston 303 moves to the right, and the emulsion in the U chamber 204 flows through the second liquid path 9 and is discharged from the high-pressure oil outlet 10, and enters the hydraulic support through the connected liquid injection gun and other devices for jacking operation. The first piston 301 reciprocally pushes the push rods 1803 on both sides, cyclically controlling the liquid suction and discharge of the Z chamber 203 and the U chamber 204 to complete the cycle.

Claims

1. A hydraulic injection pump booster system, characterized in that: The invention comprises a box (1), wherein a booster cylinder (2) is arranged in the box (1), and a piston assembly (3) is arranged in the booster cylinder (2), so that the booster cylinder (2) is divided into a symmetrical X chamber (201) and a Y chamber (202) and a symmetrical Z chamber (203) and a U chamber (204); A support plate (4) is arranged in the box body (1), a support rod (5) is connected to the bottom of the support plate (4), and a support block (6) installed on the side of the box body (1) is connected to the bottom of the support rod (5), and the booster cylinder group is located on the support block (6); The Z chamber (203) and the U chamber (204) are respectively connected to the emulsion tank (8) via a first liquid path (7), and connected to the high-pressure oil outlet (10) via a second liquid path (9), and both the first liquid path (7) and the second liquid path (9) are provided with a one-way valve (11); The upper end of the box body (1) is provided with a static pressure water inlet (12), which is connected to a bidirectional hydraulic lock (14) through a first water channel (13), and is respectively connected to the X chamber (201) and the Y chamber (202) through two second water channels (15); the bidirectional hydraulic lock (14) is connected to a three-position four-way hydraulically controlled reversing valve (17) through a third water channel (16); Two groups of reversing control valves (18) are symmetrically arranged on both sides of the boosting cylinder body (2); the first water path (13) is respectively connected to the water inlets (1805) of the two groups of reversing control valves (18) through two fourth water paths (19); the water outlets (1806) of the reversing control valves (18) are connected to the three-position four-way hydraulically controlled reversing valve (17) through the fifth water path (20); the control end of the reversing control valve (18) extends into the boosting cylinder body (2), and the piston assembly (3) can move to abut against the control end and connect the water inlet (1805) and the water outlet (1806).

2. The hydraulic injection pump boosting system according to claim 1, characterized in that: The booster cylinder group includes a main cylinder (205), and two groups of auxiliary cylinders (206) are symmetrically connected on both sides of the main cylinder (205). The piston assembly (3) includes a first piston (301) in the main cylinder (205), and the first piston (301) is connected to a second piston (303) located in the auxiliary cylinder (206) through two piston rods (302).

3. The hydraulic injection pump boosting system according to claim 1, characterized in that: The second liquid path (9) is provided with a high-low pressure mixing valve (21), and the first water path (13) is connected to the high-low pressure mixing valve (21) via a sixth water path (22).

4. The hydraulic injection pump boosting system according to claim 1, characterized in that: The drain port of the bidirectional hydraulic lock (14) is connected to a drain pipe (23), and can drain water from the X chamber (201) and the Y chamber (202) through the third water channel (16).

5. The hydraulic injection pump boosting system according to claim 3, characterized in that: The first water circuit (13) is connected to a three-way pipe (24), and the three-way pipe (24) is respectively connected to the two-way hydraulic lock (14) and the sixth water circuit (22).

6. The hydraulic injection pump boosting system according to claim 5, characterized in that: The water inlet of the bidirectional hydraulic lock (14) is connected to a four-way pipe (25), and the four-way pipe (25) is connected to the first water channel (13) and the fourth water channel (19) respectively.

7. The hydraulic injection pump boosting system according to claim 2, characterized in that: The reversing control valve (18) comprises a housing (1801), a sleeve (1802) is installed at one end of the housing (1801), and the sleeve (1802) is installed on the side of the master cylinder (205), and the control end is a push rod (1803) that penetrates the sleeve (1802) to the master cylinder (205); A water inlet cylinder (1804) is installed at the other end of the shell (1801), and a water inlet (1805) at the water inlet cylinder (1804) is connected to the fourth water path (19). A water outlet (1806) is provided on the side of the shell (1801) for connecting to the fifth water path (20). A stopper (1807) is provided in the shell (1801) on the side of the water outlet (1806) close to the water inlet cylinder (1804), and a water hole (1808) is provided horizontally on the stopper (1807) so as to connect the water inlet (1805) and the water outlet (1806). A movable rod (1809) is horizontally slidably arranged in the water hole (1808), and a blocking bead (1810) is installed at one end of the movable rod (1809) close to the water inlet cylinder (1804) to block the water hole (1808). The movable rod (1809) extends toward one side of the push rod (1803), and the push rod (1803) can push the movable rod (1809) to move toward the water inlet cylinder (1804) through an elastic component, and can be reset through the elastic component.

8. The hydraulic injection pump boosting system according to claim 7, characterized in that: The movable rod (1809) comprises a thin rod end with a diameter smaller than the water hole (1808) and a thick rod end with a diameter larger than the water hole (1808), and a limiting cylinder (1811) for limiting the thick rod end is arranged in the housing (1801), and the thick rod end is slidably connected to the inner ring of the limiting cylinder (1811).

9. The hydraulic injection pump boosting system according to claim 2, characterized in that: The support plate (4) is located above the master cylinder (205), and the position where the supporting block (6) contacts the master cylinder (205) is arranged in an arc shape.

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