A liquid ultra-high pressure device

Abstract

This invention relates to a liquid ultra-high pressure device, comprising a measuring device, a first switching valve, a second switching valve, and an instrument panel. The measuring device includes an outer cylinder, an intermediate cylinder, and a drive shaft fixed cylinder connected sequentially from front to back. The outer cylinder, intermediate cylinder, and drive shaft fixed cylinder form a cylindrical inner cavity. A hydraulic shaft is installed inside the cylindrical inner cavity, and a drive shaft is fixedly connected to the rear end of the hydraulic shaft. The front end of the hydraulic shaft and the cylindrical inner cavity form a sealed plunger cavity. The first switching valve, the second switching valve, and the instrument panel are all connected to the plunger cavity. The hydraulic shaft is driven to move forward through the drive shaft to generate high pressure within a high-pressure range. This invention can achieve liquid pressurization through manual and electric mechanisms, with a pressurization range of 0~150 MPa. It provides a simulated environment for industrial applications, enabling high-precision measurement and processing. It offers high pressure, convenient operation, and rapid reset, improving ease of use.

Description

Technical Field

[0001] This invention relates to the field of fluid pressurization technology, specifically to a liquid ultra-high pressure device. Background Technology

[0002] As oil exploration and extraction extend into deeper strata and the deep sea, the pressure conditions at which oil is exposed are constantly increasing. The application and measurement of supercritical fluid technology lack simulated environments. Simultaneously, many chemical reactions, such as polymerization of polymers, and material processing processes like high-pressure molding of metals and high-pressure sintering of ceramics, are often carried out under high-pressure environments. Under these challenging circumstances and high-pressure environments, the accuracy of extraction, measurement, and processing faces significant challenges. Therefore, there is an urgent need to provide stable ultra-high-pressure equipment to simulate these industrial conditions, enabling high-precision measurement and processing. Summary of the Invention

[0003] This invention addresses the shortcomings of existing technologies by providing a liquid ultra-high pressure device to solve the problem of providing an ultra-high pressure working environment.

[0004] This invention is achieved through the following technical solution: a liquid ultra-high pressure device is provided, including a measuring device, a first switching valve, a second switching valve, and an instrument panel. The measuring device includes an outer cylinder, an intermediate cylinder, and a drive shaft fixed cylinder connected sequentially from front to back. The outer cylinder, intermediate cylinder, and drive shaft fixed cylinder form a cylindrical inner cavity. A hydraulic shaft is installed inside the cylindrical inner cavity. A drive shaft is fixedly connected to the rear end of the hydraulic shaft. The front end of the hydraulic shaft and the cylindrical inner cavity form a sealed plunger cavity. The first switching valve, the second switching valve, and the instrument panel are all connected to the plunger cavity. A planetary reducer is fixedly connected to the drive shaft fixed cylinder. A drive gear is fixedly connected to the output shaft of the planetary reducer. A rack meshing with the drive gear is provided on the drive shaft. A large drive wheel is fixedly connected to the input shaft of the planetary reducer.

[0005] As an optimization, the front end of the outer cylinder is connected to a main output pipe, and a first three-way valve is connected to the main output pipe. The two outlets of the first three-way valve are respectively connected to a second output pipe and a connecting pipe. The second switching valve is connected to the second output pipe, and a second three-way valve is connected to the connecting pipe. The two outlets of the second three-way valve are respectively connected to a first output pipe and an instrument panel connecting pipe. The instrument panel is connected to the instrument panel connecting pipe, and the first switching valve is connected to the first output pipe.

[0006] As an optimization, the rear end of the hydraulic shaft is connected to the drive shaft via a thread.

[0007] As an optimization, a shaft seal ring is installed at the front end of the hydraulic shaft, and a screw is connected to the front end of the hydraulic shaft. The screw presses the shaft seal ring against the front end of the hydraulic shaft through a washer.

[0008] As an optimization, the rear end of the outer cylinder is connected to the intermediate cylinder via a thread, and the rear end of the intermediate cylinder is connected to the fixed cylinder via a drive shaft via a thread.

[0009] As an optimization, a first sealing ring is installed between the outer cylinder and the intermediate cylinder, and a second sealing ring is installed between the intermediate cylinder and the drive shaft fixed cylinder.

[0010] As an optimization, the system also includes a drive mechanism for rotating the large drive wheel. The drive mechanism includes a drive mounting plate fixed to the outside of the drive shaft fixing cylinder, a fixed shaft fixed to the drive mounting plate, and a receiving shaft fixed to the end of the fixed shaft. A rotating sleeve is fitted on the fixed shaft, and an output gear is fixedly connected to the rotating sleeve. A switching gear is axially slidably connected to the rotating sleeve. A thrust spring is installed between the output gear and the switching gear. The system also includes a drive motor for rotating the output gear and a clamping mechanism for pushing the switching gear toward the output gear. A return spring is installed on the drive shaft fixing cylinder for driving the drive shaft to move backward.

[0011] When the clamping mechanism pushes the switching gear toward the output gear so that the switching gear meshes with the large drive wheel, the switching gear slides onto the rotating sleeve. The output gear drives the switching gear to rotate through the rotating sleeve, thereby driving the large drive wheel to rotate, which in turn drives the transmission shaft to move forward and generate high pressure.

[0012] After the clamping mechanism is released, the thrust spring drives the switching gear to slide onto the receiving shaft and separates from the large drive wheel and the rotating sleeve. The transmission shaft quickly returns to its original position under the action of the return spring.

[0013] As an optimization, the rear flange of the fixed cylinder of the drive shaft is connected to a spring support sleeve, and an end plate is fixed to the rear end of the drive shaft. The reset spring is sleeved on the drive shaft and located between the spring support sleeve and the end plate.

[0014] As an optimization, the clamping mechanism includes a rotating sleeve fitted on a receiving shaft, the receiving shaft having an inclined guide groove, an insert shaft fixedly connected to the inner ring of the rotating sleeve and inserted into the guide groove, and a thrust bearing installed between the rotating sleeve and the switching gear.

[0015] As an optimization, an intermediate gear that meshes with the output gear is shaft-connected to the drive mounting plate, and a motor gear that meshes with the intermediate gear is fixedly connected to the shaft of the drive motor.

[0016] The beneficial effects of the present invention are as follows: The liquid ultra-high pressure device of the present invention can pressurize the liquid through manual and electric structures, with a pressurization range of 0~150Mpa. It provides a simulated environment for industrial backgrounds, realizes high-precision measurement and processing, has high pressure, is easy to operate, can achieve rapid reset, and improves the convenience of use. Attached Figure Description

[0017] Figure 1 This is a front view of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the present invention;

[0019] Figure 3 This is a right view of the present invention;

[0020] Figure 4 This is an internal cross-sectional view of the measuring device of the present invention;

[0021] Figure 5 This is a schematic diagram of the drive mechanism structure of the present invention;

[0022] Figure 6 This is an exploded view of the drive mechanism of the present invention;

[0023] Figure 7 This is an exploded view of the drive mechanism of the present invention from another angle;

[0024] Figure 8 This is a top view of the drive mechanism of the present invention;

[0025] Figure 9 This is a schematic diagram of the guide groove on the side of the receiving shaft of the present invention;

[0026] Figure 10 This is a side view of the drive mechanism of the present invention engaging with the large drive wheel;

[0027] Figure 11 This is a side view showing the drive mechanism of the present invention separated from the large drive wheel;

[0028] As shown in the figure:

[0029] 1. Outer cylinder block; 2. Intermediate cylinder block; 3. Drive shaft fixed cylinder block; 4. Drive mechanism; 41. Drive mounting plate; 42. Fixed shaft; 43. Receiving shaft; 431. Guide groove; 44. Output gear; 45. Switching gear; 46. Thrust bearing; 47. Rotating sleeve; 471. Insert shaft; 48. Rotating sleeve; 49. Thrust spring; 410. Intermediate gear; 411. Motor gear; 412. Drive motor; 5. Planetary reducer; 6. Large drive wheel; 7. Drive gear; 8. Transmission. 9. Shaft, 10. Hydraulic shaft, 11. Return spring, 12. End plate, 13. Base plate, 14. Support plate, 15. Main output pipe, 16. First tee, 17. Second output pipe, 18. Second tee, 19. First output pipe, 20. First switch valve, 21. Instrument panel connecting pipe, 22. Instrument panel, 23. Connecting pipe, 24. First sealing ring, 25. Second sealing ring, 26. Gasket, 27. Shaft seal ring, 28. Screw, 29. Spring support sleeve. Detailed Implementation

[0030] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to describe the solution.

[0031] like Figures 1-11 As shown, a liquid ultra-high pressure device of the present invention includes a measuring device, a first switching valve 20, a second switching valve 17, and an instrument panel 22. The measuring device is used to generate high-pressure liquid. The device also includes a base plate 12. The measuring device, the first switching valve 20, the second switching valve 17, and the instrument panel 22 are all mounted on the base plate 12, which serves to support and fix the various parts.

[0032] The measuring device outputs high-pressure liquid at its front end. To connect the first switching valve 20, the second switching valve 17, and the instrument panel 22 to the measuring device, the front end of the measuring device is connected to a main output pipe 14. A first tee 15 is connected to the main output pipe 14. The two outlets of the first tee 15 are respectively connected to a second output pipe 16 and a connecting pipe 23. The second switching valve 17 is connected to the second output pipe 16. A second tee 18 is connected to the connecting pipe 23. The two outlets of the second tee 18 are respectively connected to a first output pipe 19 and an instrument panel connecting pipe 21. The instrument panel 22 is connected to the instrument panel connecting pipe 21, and the first switching valve 20 is connected to the first output pipe 19.

[0033] The aforementioned pipe is made of 316L stainless steel, which has high corrosion resistance and can withstand the erosion of various media under high pressure. The inner diameter is 9mm, and the outer diameter is 25mm.

[0034] The first switching valve 20 and the second switching valve 17 serve as control components, allowing for convenient start-up and shutdown of the equipment. When measurement or operation is required, they are opened to put the equipment into working condition; after completion, they are closed to ensure safe shutdown of the equipment.

[0035] The casing material of the instrument panel 22 is corrosion resistant and can withstand 150MPa high pressure.

[0036] The first tee 15 and the second tee 18 mentioned above are both made of 316L stainless steel, which has good corrosion resistance and high strength, and can maintain good stability and reliability under high pressure. They can effectively resist the erosion of corrosive media such as chloride ions, and are suitable for various complex working environments.

[0037] like Figure 4 As shown, the measuring device includes an outer cylinder 1, an intermediate cylinder 2, and a drive shaft fixing cylinder 3 connected sequentially from front to back; the outer cylinder 1, the intermediate cylinder 2, and the drive shaft fixing cylinder 3 are all provided with hollow cylindrical holes, and the outer cylinder 1, the intermediate cylinder 2, and the drive shaft fixing cylinder 3 form a cylindrical inner cavity. The front end of the outer cylinder 1 is closed and has a threaded hole, so the main output pipe 14 is connected to the front end of the outer cylinder 1 through the threaded hole.

[0038] The rear end of the outer cylinder 1 is connected to the intermediate cylinder 2 via threads, and a first sealing ring 24 is installed between the outer cylinder 1 and the intermediate cylinder 2. The rear end of the intermediate cylinder 2 is connected to the drive shaft fixing cylinder 3 via threads, and a second sealing ring 25 is installed between the intermediate cylinder 2 and the drive shaft fixing cylinder 3. The first sealing ring 24 and the second sealing ring 25 play important roles in ensuring system sealing, corrosion resistance, preventing contaminant entry, and self-lubrication, thereby ensuring stable system operation and extending service life.

[0039] The structure of the outer cylinder 1, the intermediate cylinder 2, and the drive shaft fixing cylinder 3 through docking can increase the stroke for generating high-pressure liquid, resulting in a large output of high-pressure liquid. Furthermore, the docking structure facilitates machining and ensures high coaxiality. The outer cylinder 1 is fixed to the base plate 12 by a support plate 13.

[0040] The cylindrical inner cavity is equipped with a hydraulic shaft 9. The front end of the hydraulic shaft 9 and the cylindrical inner cavity form a closed plunger cavity. The first switching valve 20, the second switching valve 17 and the instrument panel 22 are all connected to the plunger cavity. The hydraulic shaft 9 changes the volume of the plunger cavity through the reciprocating motion of the plunger, thereby realizing the intake and discharge of fluid.

[0041] The hydraulic shaft 9 is located inside the outer cylinder 1, which provides a sealed, high-pressure-resistant working environment for the internal measuring components and sensors. This ensures that the internal components can operate normally under high pressure and are not affected by the external environment. The outer cylinder also protects the internal components from damage caused by external impacts or collisions. In harsh working environments, the outer cylinder possesses wear-resistant and corrosion-resistant properties, ensuring the long-term stable operation of the high-pressure viscosity gauge and withstanding pressures up to 200 MPa. The intermediate cylinder 2 serves the same function as the outer cylinder 1.

[0042] The hydraulic shaft 9 is equipped with a shaft seal 27 at its front end, and a screw 28 is connected to the front end of the hydraulic shaft 9. The screw 28 presses the shaft seal 27 against the front end of the hydraulic shaft 9 through a washer 26.

[0043] The shaft seal 27 is composed of a U-shaped sealing ring (the frame structure is made of PEEK material and filled with polytetrafluoroethylene material) and an O-ring rubber ring. It is used for ultra-high pressure reciprocating motion sealing and static sealing, and plays a unidirectional role. It is used in ultra-high pressure hydraulic pipelines, has good sealing performance, low frictional resistance, no creep phenomenon, can be used in series in multiple sets, has a long service life, can withstand ultra-high pressure, can operate at a speed of up to 6m / s, and can achieve a sealing pressure of 300MPa. It can seal hydraulic oil, gas, water, emulsions and other substances.

[0044] The hydraulic shaft 9 is fixedly connected to the rear end of the transmission shaft 8. In this embodiment, the rear end of the hydraulic shaft 9 is connected to the transmission shaft 8 via a thread. The forward and backward movement of the transmission shaft 8 drives the hydraulic shaft 9 to move forward and backward, thereby increasing the stroke of the hydraulic shaft 9.

[0045] The drive shaft 8 is located inside the drive shaft fixing cylinder 3 and extends out of the drive shaft fixing cylinder 3 at its rear end. The drive shaft fixing cylinder 3 provides a stable installation position and support structure for the drive shaft 8, ensuring that the drive shaft can maintain the correct position and posture under high-pressure working environment, and avoiding displacement, bending or twisting of the drive shaft due to external forces or vibrations, thereby ensuring the normal operation of the drive shaft 8.

[0046] In order to realize the forward and backward movement of the drive shaft 8, a planetary reducer 15 is fixedly connected to the drive shaft fixed cylinder 3. A drive gear 7 is fixedly connected to the output shaft of the planetary reducer 15. The drive gear 7 is located inside the drive shaft fixed cylinder 3. The drive shaft 8 is provided with a rack that meshes with the drive gear 7. The rack can be processed separately from the drive shaft 8 and then connected by bolts, or it can be integrally formed on the drive shaft 8.

[0047] A large drive wheel 6 is fixedly connected to the input shaft of the planetary reducer 15. Therefore, the rotation of the large drive wheel 6 can drive the planetary reducer 15 to rotate, thereby driving the drive gear 7 to rotate. The drive gear 7 drives the transmission shaft 8 to move back and forth through the rack, thus realizing the back and forth movement of the hydraulic shaft 9. The large drive wheel 6 can be rotated manually, which generates relatively low pressure. Alternatively, the drive mechanism 4 can drive the large drive wheel 6 to rotate, thereby generating high-pressure liquid and facilitating pressure control.

[0048] like Figure 5-11 As shown, the large drive wheel 6 is a gear, and the drive mechanism 4 includes a drive mounting plate 41 fixed to the outside of the transmission shaft fixed cylinder 3, a fixed shaft 42 fixed to the drive mounting plate 41, and a receiving shaft 43 fixed to the end of the fixed shaft 42. The drive mounting plate 41 is parallel to the plane where the large drive wheel 6 is located, the fixed shaft 42 is parallel to the large drive wheel 6, and the receiving shaft 43 is coaxial with the fixed shaft 42 and has a diameter larger than the diameter of the fixed shaft 42.

[0049] A rotating sleeve 48 is fitted onto the fixed shaft 42. The length of the rotating sleeve 48 is the same as the length of the fixed shaft 42, so it cannot move axially. The outer ring of the rotating sleeve 48 is provided with a sliding spline. An output gear 44 is fixedly connected to the rotating sleeve 48. The output gear 44 is attached to the drive mounting plate 41 and is fixed to the rotating sleeve 48 by a positioning pin.

[0050] A switching gear 45 is axially slidably connected to the rotating sleeve 48. The inner ring of the switching gear 45 is provided with a sliding spline, and the minimum inner diameter of the sliding spline of the inner ring of the switching gear 45 is the same as the outer diameter of the receiving shaft 43. Therefore, the switching gear 45 can slide between the rotating sleeve 48 and the receiving shaft 43. When the switching gear 45 is on the rotating sleeve 48, the rotating sleeve 48 can drive the switching gear 45 to rotate. When the switching gear 45 is on the rotating sleeve 48, the switching gear 45 meshes with the large drive wheel 6.

[0051] When the switching gear 45 is on the receiving shaft 43, the rotating sleeve 48 will not drive the switching gear 45 to rotate. Furthermore, when the switching gear 45 is on the receiving shaft 43, the switching gear 45 is misaligned with the large drive wheel 6, and therefore will not drive the large drive wheel 6 to rotate.

[0052] A thrust spring 49 is installed between the output gear 44 and the switching gear 45. A thrust bearing is installed between the thrust spring 49 and the output gear 44. A thrust bearing is also installed between the thrust spring 49 and the switching gear 45, thus facilitating the relative rotation between the output gear 44 and the switching gear 45.

[0053] It also includes a drive motor 412 that drives the output gear 44 to rotate. An intermediate gear 410 that meshes with the output gear 44 is shaft-connected to the drive mounting plate 41. A motor gear 411 that meshes with the intermediate gear 410 is fixedly connected to the rotating shaft of the drive motor 412. By setting the intermediate gear 410, the distance between the drive motor 412 and the output gear 44 is increased, preventing interference with the transmission shaft fixed cylinder 3.

[0054] The fixed cylinder 3 of the drive shaft is equipped with a return spring 10 that drives the drive shaft 8 to move backward. When the drive motor 412 drives the drive shaft 8 to move forward to generate high-pressure liquid, in order to increase the pressure value, the drive motor 412 adopts a reduction motor to achieve a first reduction, a second reduction through the switching gear 45 and the large drive wheel 6, and a third reduction through the planetary reducer 15. Therefore, the drive shaft 8 moves forward slowly and can generate very high pressure. However, the disadvantage is that the drive shaft 8 returns to its original position slowly. Therefore, during the return, the thrust spring 49 drives the switching gear 45 to slide onto the receiving shaft 43 and separate it from the large drive wheel 6 and the rotating sleeve 48. The drive shaft 8 quickly returns to its original position under the elastic force of the return spring 10.

[0055] The rear flange of the fixed cylinder 3 of the drive shaft is connected to a spring support sleeve 29, and the rear end of the drive shaft 8 is fixed to an end plate 11. The reset spring 10 is sleeved on the drive shaft 8 and located between the spring support sleeve 29 and the end plate 11. The initial elastic force of the reset spring 10 can be adjusted by replacing the spring support sleeve 29.

[0056] It also includes a clamping mechanism that pushes the switching gear 45 toward the output gear 44; when the clamping mechanism pushes the switching gear 45 toward the output gear 44 so that the switching gear 45 meshes with the large drive wheel 6, the switching gear 45 slides onto the rotating sleeve 48, and the output gear 44 drives the switching gear 45 to rotate through the rotating sleeve 48, thereby driving the large drive wheel 6 to rotate, thereby driving the transmission shaft 8 to move forward and generate high pressure.

[0057] After the clamping mechanism is released, the thrust spring 49 drives the switching gear 45 to slide onto the receiving shaft 43 and separates from the large drive wheel 6 and the rotating sleeve 48. The transmission shaft 8 quickly returns to its original position under the action of the return spring 10.

[0058] The clamping mechanism includes a rotating sleeve 47 sleeved on a receiving shaft 43. An inclined guide groove 43 is opened on the receiving shaft 43. An insert shaft 471 inserted into the guide groove 43 is fixedly connected to the inner ring of the rotating sleeve 47. A thrust bearing 46 is installed between the rotating sleeve 47 and the switching gear 45. Therefore, by rotating the rotating sleeve 47, the axial movement of the rotating sleeve 47 can be realized. When moving towards the switching gear 45, the thrust bearing 46 pushes the switching gear 45 to mesh with the large drive wheel 6.

[0059] like Figure 9 As shown, the end of the guide groove 43 near the fixed shaft 42 is slightly bent in the opposite direction to prevent the insert shaft 471 from easily coming out.

[0060] How to use this invention:

[0061] The measuring device generates high-pressure liquid, the instrument panel 22 displays the pressure value, and the first switching valve 20 and the second switching valve 17 serve as control components, allowing for convenient start-up and shutdown of the equipment. When measurement or operation is required, the valve is opened to put the equipment into working condition; after completion, it is closed to ensure safe shutdown.

[0062] When the measuring device is working, the transmission shaft 8 drives the hydraulic shaft 9 to reciprocate back and forth, causing the volume of the plunger cavity to change, thereby realizing the intake and discharge of fluid.

[0063] The process of the drive shaft 8 moving forward: as follows Figure 5 As shown, the motor gear 411 of the drive motor 412 drives the output gear 44 to rotate through the intermediate gear 410, and the output gear 44 drives the rotating sleeve 48 to rotate, as shown. Figure 10 As shown, at this time, the rotating sleeve 47 presses the switching gear 45 onto the rotating sleeve 48 and meshes with the large drive wheel 6. Therefore, the rotating sleeve 48 drives the switching gear 45 to rotate, the switching gear 45 drives the large drive wheel 6 to rotate, the large drive wheel 6 drives the drive gear 7 to rotate through the planetary reducer 15, and the drive gear 7 drives the transmission shaft 8 to move forward through the rack to achieve pressurization.

[0064] The process for resetting the drive shaft 8 backward: Manually rotate the rotating sleeve 47 to move it in the opposite direction, as follows. Figure 11 As shown, the thrust spring 49 drives the switching gear 45 to slide onto the receiving shaft 43 and separates it from the large drive wheel 6 and the rotating sleeve 48. The transmission shaft 8 quickly returns to its original position under the action of the return spring 10.

[0065] Of course, the above description is not limited to the examples above. Technical features not described in this invention can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solutions of this invention and are not intended to limit this invention. This invention has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this invention do not depart from the spirit of this invention and should also fall within the scope of protection of the claims of this invention.

Claims

1. A liquid ultra-high pressure device, characterized in that: The device includes a measuring device, a first switching valve (20), a second switching valve (17), and an instrument panel (22). The measuring device includes an outer cylinder (1), an intermediate cylinder (2), and a drive shaft fixed cylinder (3) connected sequentially from front to back. The outer cylinder (1), the intermediate cylinder (2), and the drive shaft fixed cylinder (3) form a cylindrical inner cavity. A hydraulic shaft (9) is installed in the cylindrical inner cavity. A drive shaft (8) is fixed to the rear end of the hydraulic shaft (9). The front end of the hydraulic shaft (9) and the cylindrical inner cavity form a sealed plunger cavity. The first switching valve (20), the second switching valve (17), and the instrument panel (22) are all connected to the plunger cavity. A planetary reducer (5) is fixed to the drive shaft fixed cylinder (3). A drive gear (7) is fixed to the output shaft of the planetary reducer (5). A rack that meshes with the drive gear (7) is provided on the drive shaft (8). A large drive wheel (6) is fixed to the input shaft of the planetary reducer (5). It also includes a drive mechanism (4) for driving the large drive wheel (6) to rotate. The drive mechanism (4) includes a drive mounting plate (41) fixed to the outside of the transmission shaft fixed cylinder (3), a fixed shaft (42) fixed to the drive mounting plate (41), and a receiving shaft (43) fixed to the end of the fixed shaft (42). A rotating sleeve (48) is sleeved on the fixed shaft (42), and an output gear (44) is fixed on the rotating sleeve (48). A switching gear (45) is axially slidably connected on the rotating sleeve (48). A thrust spring (49) is installed between the output gear (44) and the switching gear (45). It also includes a drive motor (412) for driving the output gear (44) to rotate and a clamping mechanism for pushing the switching gear (45) toward the output gear (44). A return spring (10) for driving the transmission shaft (8) to move backward is installed on the transmission shaft fixed cylinder (3). When the clamping mechanism pushes the switching gear (45) toward the output gear (44) so ​​that the switching gear (45) meshes with the large drive wheel (6), the switching gear (45) slides onto the rotating sleeve (48), and the output gear (44) drives the switching gear (45) to rotate through the rotating sleeve (48), thereby driving the large drive wheel (6) to rotate, thereby driving the transmission shaft (8) to move forward and generate high pressure; After the clamping mechanism is released, the thrust spring (49) drives the switching gear (45) to slide onto the receiving shaft (43) and separates from the large drive wheel (6) and the rotating sleeve (48). The transmission shaft (8) quickly resets backward under the elastic force of the reset spring (10).

2. The liquid ultra-high pressure device according to claim 1, characterized in that: The front end of the outer cylinder (1) is connected to a main output pipe (14), and a first tee (15) is connected to the main output pipe (14). The two outlets of the first tee (15) are respectively connected to a second output pipe (16) and a connecting pipe (23). The second switch valve (17) is connected to the second output pipe (16). The connecting pipe (23) is connected to a second tee (18). The two outlets of the second tee (18) are respectively connected to a first output pipe (19) and an instrument panel connecting pipe (21). The instrument panel (22) is connected to the instrument panel connecting pipe (21). The first switch valve (20) is connected to the first output pipe (19).

3. The liquid ultra-high pressure device according to claim 1, characterized in that: The rear end of the hydraulic shaft (9) is connected to the transmission shaft (8) by a thread.

4. The liquid ultra-high pressure device according to claim 1, characterized in that: The hydraulic shaft (9) is equipped with a shaft seal ring (27) at its front end, and a screw (28) is connected to the front end of the hydraulic shaft (9). The screw (28) presses the shaft seal ring (27) against the front end of the hydraulic shaft (9) through a washer (26).

5. A liquid ultra-high pressure device according to claim 1, characterized in that: The rear end of the outer cylinder (1) is connected to the middle cylinder (2) by a thread, and the rear end of the middle cylinder (2) is connected to the fixed cylinder (3) of the drive shaft by a thread.

6. A liquid ultra-high pressure device according to claim 5, characterized in that: A first sealing ring (24) is installed between the outer cylinder (1) and the middle cylinder (2), and a second sealing ring (25) is installed between the middle cylinder (2) and the drive shaft fixed cylinder (3).

7. A liquid ultra-high pressure device according to claim 1, characterized in that: The rear flange of the fixed cylinder (3) of the drive shaft is connected to a spring support sleeve (29), and the rear end of the drive shaft (8) is fixed to an end plate (11). The reset spring (10) is sleeved on the drive shaft (8) and located between the spring support sleeve (29) and the end plate (11).

8. A liquid ultra-high pressure device according to claim 1, characterized in that: The clamping mechanism includes a rotating sleeve (47) sleeved on the receiving shaft (43), the receiving shaft (43) having an inclined guide groove (431), the inner ring of the rotating sleeve (47) on the receiving shaft (43) being fixedly connected to an insert shaft (471) inserted into the guide groove (431), and a thrust bearing (46) being installed between the rotating sleeve (47) on the receiving shaft (43) and the switching gear (45).

9. A liquid ultra-high pressure device according to claim 1, characterized in that: The drive mounting plate (41) is shaft-connected with an intermediate gear (410) that meshes with the output gear (44), and the drive motor (412) shaft is fixedly connected with a motor gear (411) that meshes with the intermediate gear (410).

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