Liquid ultrahigh pressure device

Abstract

The invention relates to a liquid ultrahigh pressure device, which comprises a measuring device, a first switch valve, a second switch valve and an instrument panel, and is characterized in that the measuring device comprises an outer cylinder body, a middle cylinder body and a transmission shaft fixing cylinder body which are sequentially connected from front to back; the outer cylinder body, the middle cylinder body and the transmission shaft fixing cylinder body form a cylindrical inner cavity, a hydraulic shaft is arranged in the cylindrical inner cavity, the rear end of the hydraulic shaft is fixedly connected with a transmission shaft, the front end of the hydraulic shaft and the cylindrical inner cavity form a closed plunger cavity, and the first switch valve, the second switch valve and the instrument panel are all communicated with the plunger cavity. The hydraulic shaft is driven by the transmission shaft to move forwards to generate high pressure within the high pressure range, liquid pressurization can be achieved through a manual structure and an electric structure, the pressurization range is 0-150 Mpa, a simulation environment is provided for the industrial background, high-precision measurement and machining are achieved, the pressure is large, operation is convenient, rapid reset can be achieved, and use convenience is improved.

Description

Technical Field

[0001] The invention relates to the technical field of fluid pressurization, and in particular to a liquid ultra-high pressure device. Background Art

[0002] As oil exploration and exploitation develops into complex environments such as deep formations and deep seas, the pressure conditions of oil continue to rise, and the application and measurement of supercritical fluid technology lack a simulation environment; at the same time, many chemical reactions such as polymerization reactions of polymer materials, high-pressure forming of metal materials, high-pressure sintering of ceramic materials and other material processing are often carried out under high-pressure environments. The accuracy of exploitation, measurement and processing in similar backgrounds and under this high-pressure environment faces challenges. Therefore, it is urgent to provide a stable ultra-high pressure device to provide a simulation environment for this industrial background and achieve high-precision measurement and processing. Summary of the invention

[0003] In view of the deficiencies of the prior art, the present invention provides a liquid ultra-high pressure device to provide an ultra-high pressure working environment.

[0004] The present invention is achieved through the following technical scheme, which provides a liquid ultra-high pressure device, including a measuring device, a first switch valve, a second switch valve and an instrument panel, wherein the measuring device includes an outer cylinder body, an intermediate cylinder body and a transmission shaft fixed cylinder body connected in sequence from front to back; the outer cylinder body, the intermediate cylinder body and the transmission shaft fixed cylinder body constitute a cylindrical inner cavity, a hydraulic shaft is installed in the cylindrical inner cavity, a transmission shaft is fixedly connected to the rear end of the hydraulic shaft, and a closed plunger cavity is formed with the front end of the hydraulic shaft and the cylindrical inner cavity, the first switch valve, the second switch valve and the instrument panel are all connected to the plunger cavity, a planetary reducer is fixedly connected to the transmission shaft fixed cylinder body, a driving gear is fixedly connected to the output shaft of the planetary reducer, a rack meshing with the driving gear is provided on the transmission shaft, and a large driving wheel is fixedly connected to the input shaft of the planetary reducer.

[0005] As an optimization, the front end of the outer cylinder body is connected to a total output pipe, the total output pipe is connected to a first tee, two outlets of the first tee are respectively connected to the second output pipe and the connecting pipe, the second switch valve is connected to the second output pipe, the connecting pipe is connected to a second tee, two outlets of the second tee are respectively connected to the first output pipe and the instrument panel connecting pipe, the instrument panel is connected to the instrument panel connecting pipe, and the first switch valve is connected to the first output pipe.

[0006] As an optimization, the rear end of the hydraulic shaft is connected to the transmission 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 to the front end of the hydraulic shaft through a gasket.

[0008] As an optimization, the rear end of the outer cylinder body is connected to the middle cylinder body through threads, and the rear end of the middle cylinder body is connected to the transmission shaft fixed cylinder body through threads.

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

[0010] As an optimization, it also includes a driving mechanism for driving the large driving wheel to rotate, the driving mechanism includes a driving mounting plate fixedly connected to the outside of the fixed cylinder body of the transmission shaft, a fixed shaft fixedly connected to the driving mounting plate, and a receiving shaft fixedly connected to the end of the fixed shaft, a rotating sleeve is sleeved on the fixed shaft, 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, and also includes a driving motor for driving the output gear to rotate and a clamping mechanism for pushing the switching gear toward the output gear; a reset spring for driving the transmission shaft to move backward is installed on the fixed cylinder body of the transmission shaft; When the clamping mechanism pushes the switching gear toward the output gear so that the switching gear meshes with the large driving wheel, the switching gear slides onto the rotating sleeve, and the output gear drives the switching gear to rotate through the rotating sleeve, thereby driving the large driving wheel to rotate, thereby driving the transmission shaft to move forward to generate high pressure; After the clamping mechanism is released, the thrust spring drives the switching gear to slide onto the receiving shaft and separate from the large driving wheel and the rotating sleeve, and the transmission shaft quickly resets backwards under the elastic force of the reset spring.

[0011] As an optimization, the rear end flange of the transmission shaft fixed cylinder is connected with a spring support sleeve, the rear end of the transmission shaft is fixed with an end plate, and the return spring is sleeved on the transmission shaft and located between the spring support sleeve and the end plate.

[0012] As an optimization, the clamping mechanism includes a rotating sleeve sleeved on a receiving shaft, an inclined guide groove is provided on the receiving shaft, an insert shaft inserted into the guide groove is fixedly connected to the inner ring of the rotating sleeve, and a thrust bearing is installed between the rotating sleeve and the switching gear.

[0013] As an optimization, an intermediate gear meshing with the output gear is axially connected to the drive mounting plate, and a motor gear meshing with the intermediate gear is fixedly connected to the rotating shaft of the drive motor.

[0014] The beneficial effects of the present invention are as follows: a liquid ultra-high pressure device of the present invention can realize liquid pressurization through manual and electric structures, and the pressurization range is 0~150Mpa. It provides a simulation environment for this industrial background, realizes high-precision measurement and processing, has high pressure, is easy to operate, can realize rapid reset, and improves ease of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention; Figure 3 It is a right side view of the present invention; Figure 4 is an internal cross-sectional view of the measuring device of the present invention; Figure 5 It is a schematic diagram of the structure of the driving mechanism of the present invention; Figure 6 It is an exploded schematic diagram of the driving mechanism of the present invention; Figure 7 It is an exploded schematic diagram of the driving mechanism of the present invention from another angle; Figure 8 A top view of the driving mechanism of the present invention; Fig. 9 It is a schematic diagram of the guide groove on the side surface of the receiving shaft of the present invention; Fig.10 A side view of the drive mechanism of the present invention meshing with the large drive wheel; Fig.11 It is a side view of the driving mechanism of the present invention separated from the large driving wheel; As shown in the figure: 1. Outer cylinder, 2. Intermediate cylinder, 3. Drive shaft fixed cylinder, 4. Driving mechanism, 41. Driving mounting plate, 42. Fixed shaft, 43. Undertaking 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. Driving motor, 5. Planetary reducer, 6. Large driving wheel, 7. Driving gear, 8. Transmission Shaft, 9, hydraulic shaft, 10, return spring, 11, end plate, 12, bottom plate, 13, support plate, 14, total output pipe, 15, first three-way, 16, second output pipe, 17, second switch valve, 18, second three-way, 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 DESCRIPTION

[0016] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0017] like Figures 1 to 11As shown, a liquid ultra-high pressure device of the present invention includes a measuring device, a first switch valve 20, a second switch valve 17 and an instrument panel 22. The measuring device is used to generate high-pressure liquid and also includes a base plate 12. The measuring device, the first switch valve 20, the second switch valve 17 and the instrument panel 22 are all installed on the base plate 12 to support and fix various parts.

[0018] The front end of the measuring device outputs high-pressure liquid. In order to realize the connection between the first switch valve 20, the second switch valve 17 and the instrument panel 22 and the measuring device, the front end of the measuring device is connected with a total output pipe 14, and the total output pipe 14 is connected with a first tee 15, and the two outlets of the first tee 15 are respectively connected with the second output pipe 16 and the connecting pipe 23, the second switch valve 17 is connected to the second output pipe 16, and the connecting pipe 23 is connected with a second tee 18, and the two outlets of the second tee 18 are respectively connected with the first output pipe 19 and the instrument panel connecting pipe 21, the instrument panel 22 is connected to the instrument panel connecting pipe 21, and the first switch valve 20 is connected to the first output pipe 19.

[0019] The above-mentioned pipe is made of 316L stainless steel, which has high corrosion resistance and can resist the erosion of various media under high pressure environment. The inner diameter is 9mm and the outer diameter is 25mm.

[0020] The first switch valve 20 and the second switch valve 17 are used as control components to conveniently start and stop the operation of the device. When measurement or operation is required, the first switch valve 20 and the second switch valve 17 are opened to put the device into working state; when completed, the first switch valve 20 and the second switch valve 17 are closed to ensure that the device stops safely.

[0021] The outer shell material of the instrument panel 22 has the properties of corrosion resistance and resistance to high pressure of 150 MPa.

[0022] The materials of the first tee 15 and the second tee 18 are both 316L stainless steel, which has good corrosion resistance and high strength, can maintain good stability and reliability in high pressure environments, can effectively resist the erosion of corrosive media such as chloride ions, and is suitable for various complex working environments.

[0023] like Figure 4 As shown, the measuring device includes an outer cylinder body 1, an intermediate cylinder body 2 and a transmission shaft fixed cylinder body 3 which are connected in sequence from front to back; the outer cylinder body 1, the intermediate cylinder body 2 and the transmission shaft fixed cylinder body 3 are all provided with hollow cylindrical holes, and the outer cylinder body 1, the intermediate cylinder body 2 and the transmission shaft fixed cylinder body 3 constitute a cylindrical inner cavity, and the front end of the outer cylinder body 1 is closed and has a threaded hole, so the total output pipe 14 is connected to the front end of the outer cylinder body 1 through the threaded hole.

[0024] The rear end of the outer cylinder body 1 is connected to the middle cylinder body 2 through threads, and a first sealing ring 24 is installed between the outer cylinder body 1 and the middle cylinder body 2; the rear end of the middle cylinder body 2 is connected to the transmission shaft fixed cylinder body 3 through threads, and a second sealing ring 25 is installed between the middle cylinder body 2 and the transmission shaft fixed cylinder body 3. The first sealing ring 24 and the second sealing ring 25 play an important role in ensuring the sealing of the system, corrosion resistance, preventing pollutants from entering, and self-lubrication, thereby ensuring the stable operation of the system and extending the service life.

[0025] The structure of the outer cylinder body 1, the intermediate cylinder body 2 and the transmission shaft fixed cylinder body 3 butted together can increase the stroke of generating high-pressure liquid, and the output of high-pressure liquid is large. The butted structure is easy to process and has high coaxiality. The outer cylinder body 1 is fixed to the bottom plate 12 through the support plate 13.

[0026] A hydraulic shaft 9 is installed in the cylindrical inner cavity, and the front end of the hydraulic shaft 9 and the cylindrical inner cavity form a closed plunger cavity. The first switch valve 20, the second switch 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 suction and discharge of the fluid.

[0027] The hydraulic shaft 9 is located in the outer cylinder 1, and the outer cylinder 1 provides a sealed working environment that can withstand high pressure for the internal measuring components, sensors, etc. It ensures that the internal components can work normally under high pressure conditions and will not be affected by the external environment. The outer cylinder can also protect the internal components and prevent external impacts, collisions, etc. from causing damage to the internal components. In some harsh working environments, the outer cylinder has anti-wear and anti-corrosion properties to ensure the long-term stable operation of the high-pressure viscosity meter and withstand a pressure of 200MPa. The function of the intermediate cylinder 2 is the same as that of the outer cylinder 1.

[0028] A shaft seal ring 27 is installed at the front end of the hydraulic shaft 9 , and a screw 28 is connected to the front end of the hydraulic shaft 9 . The screw 28 presses the shaft seal ring 27 onto the front end of the hydraulic shaft 9 through a gasket 26 .

[0029] The shaft seal ring 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-shaped rubber ring. It is used for ultra-high pressure reciprocating motion sealing and static sealing, and has a unidirectional effect. It is used for ultra-high pressure hydraulic pipelines, has good sealing performance, small friction resistance, no creeping phenomenon, can be used in series in multiple groups, has a long service life, is resistant to ultra-high pressure, and can run at a speed of up to 6m / s. The sealing pressure can reach 300MPa, and can seal hydraulic oil, gas, water, emulsion and other substances.

[0030] The rear end of the hydraulic shaft 9 is fixedly connected with a transmission shaft 8. In this embodiment, the rear end of the hydraulic shaft 9 is connected to the transmission shaft 8 by a thread. The front and rear 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 moving forward and backward.

[0031] The transmission shaft 8 is located in the transmission shaft fixing cylinder 3 and the rear end passes through the transmission shaft fixing cylinder 3. The transmission shaft fixing cylinder 3 provides a stable installation position and support structure for the transmission shaft 8, ensuring that the transmission shaft can maintain a correct position and posture under a high-pressure working environment, avoiding displacement, bending or twisting of the transmission shaft due to external forces or vibrations, thereby ensuring the normal operation of the transmission shaft 8.

[0032] In order to realize the forward and backward movement of the transmission shaft 8, a planetary reducer 15 is fixedly connected to the transmission shaft fixing cylinder body 3, and a driving gear 7 is fixedly connected to the output shaft of the planetary reducer 15. The driving gear 7 is located in the transmission shaft fixing cylinder body 3. A rack meshing with the driving gear 7 is provided on the transmission shaft 8. The rack can be separately processed from the transmission shaft 8 and connected by bolts, or it can be integrally formed on the transmission shaft 8.

[0033] The input shaft of the planetary reducer 15 is fixedly connected with a large driving wheel 6, so the rotation of the large driving wheel 6 can drive the planetary reducer 15 to rotate, thereby driving the driving gear 7 to rotate, and the driving gear 7 drives the transmission shaft 8 to move forward and backward through the rack, thereby realizing the forward and backward movement of the hydraulic shaft 9. The large driving wheel 6 can be rotated manually, and the pressure generated during manual rotation is relatively small, or the large driving wheel 6 can be driven to rotate by the driving mechanism 4, thereby generating high-pressure liquid, and at the same time facilitating pressure control.

[0034] like Figure 5-11 As shown, the large driving wheel 6 is a gear, and the driving mechanism 4 includes a driving mounting plate 41 fixedly connected to the outer side of the transmission shaft fixing cylinder 3, a fixed shaft 42 fixedly connected to the driving mounting plate 41, and a receiving shaft 43 fixedly connected to the end of the fixed shaft 42. The driving mounting plate 41 is parallel to the plane where the large driving wheel 6 is located, the fixed shaft 42 is parallel to the large driving wheel 6, and the receiving shaft 43 is coaxial with the fixed shaft 42 and has a diameter larger than that of the fixed shaft 42.

[0035] The fixed shaft 42 is sleeved with a rotating sleeve 48, and the length of the rotating sleeve 48 is consistent with 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, and the rotating sleeve 48 is fixedly connected with an output gear 44, which fits on the drive mounting plate 41 and is fixed to the rotating sleeve 48 by a positioning pin.

[0036] A switching gear 45 is axially slidably connected to the rotating sleeve 48. A sliding spline is provided on the inner ring of the switching gear 45, and the minimum inner diameter of the sliding spline on 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 switching gear 45 can be driven to rotate by the rotating sleeve 48, and when the switching gear 45 is on the rotating sleeve 48, the switching gear 45 is meshed with the large driving wheel 6.

[0037] When the switching gear 45 is on the receiving shaft 43, the rotating sleeve 48 will not drive the switching gear 45 to rotate when it rotates, and when the switching gear 45 is on the receiving shaft 43, the switching gear 45 is misaligned with the large driving wheel 6, and will not drive the large driving wheel 6 to rotate.

[0038] 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, and a thrust bearing is also installed between the thrust spring 49 and the switching gear 45, so that the relative rotation between the output gear 44 and the switching gear 45 is easily achieved. It also includes a driving motor 412 for driving the output gear 44 to rotate, and the driving mounting plate 41 has an upper shaft connected to an intermediate gear 410 meshing with the output gear 44, and a motor gear 411 meshing with the intermediate gear 410 is fixedly connected to the rotating shaft of the driving motor 412. By setting the intermediate gear 410, the driving motor 412 is increased in distance from the output gear 44 to prevent interference with the transmission shaft fixing cylinder 3.

[0039] The transmission shaft fixing cylinder body 3 is provided with a return spring 10 for driving the transmission shaft 8 to move backward; when the driving motor 412 drives the transmission shaft 8 to move forward to generate high-pressure liquid, in order to increase the pressure value, the driving motor 412 adopts a reduction motor to achieve primary reduction, and achieves secondary reduction through the switching gear 45 and the large driving wheel 6, and achieves tertiary reduction through the planetary reducer 15. Therefore, the transmission shaft 8 moves forward slowly and can generate very high pressure, but there is a disadvantage that the transmission shaft 8 has a slow reset speed backward. Therefore, when resetting, the switching gear 45 is driven by the thrust spring 49 to slide onto the receiving shaft 43 and separate from the large driving wheel 6 and the rotating sleeve 48, and the transmission shaft 8 quickly resets backward under the elastic force of the return spring 10.

[0040] The rear end flange of the transmission shaft fixing cylinder 3 is connected to a spring support sleeve 29, and the rear end of the transmission shaft 8 is fixedly connected to an end plate 11. The return spring 10 is sleeved on the transmission shaft 8 and is located between the spring support sleeve 29 and the end plate 11. By replacing the spring support sleeve 29, the initial elastic force of the return spring 10 can be adjusted.

[0041] 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 engages with the large driving 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 driving wheel 6 to rotate, thereby driving the transmission shaft 8 to move forward to generate high pressure.

[0042] After the clamping mechanism is released, the thrust spring 49 drives the switching gear 45 to slide onto the receiving shaft 43 and separate from the large driving wheel 6 and the rotating sleeve 48 , and the transmission shaft 8 quickly resets backwards under the elastic force of the reset spring 10 .

[0043] The clamping mechanism includes a rotating sleeve 47 sleeved on the receiving shaft 43, the receiving shaft 43 is provided with an inclined guide groove 43, the inner ring of the rotating sleeve 47 is fixedly connected with an inserted shaft 471 inserted into the guide groove 43, and 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 achieved. When moving in the direction of the switching gear 45, the switching gear 45 is pushed by the thrust bearing 46 to engage with the large driving wheel 6.

[0044] like Fig. 9 As shown, one end of the guide slot 43 close to the fixed shaft 42 is slightly bent in the reverse direction, thereby preventing the insertion shaft 471 from easily falling out.

[0045] Method of use of the present invention: The measuring device is used to generate high-pressure liquid, the instrument panel 22 is used to display the pressure value, and the first switch valve 20 and the second switch valve 17 are used as control components to conveniently start and stop the operation of the equipment. When measurement or operation is required, open the device to put it into working state; close it after completion to ensure that the equipment stops safely.

[0046] When the measuring device is working, the transmission shaft 8 drives the hydraulic shaft 9 to reciprocate back and forth, so that the volume inside the plunger cavity changes, thereby realizing the suction and discharge of the fluid.

[0047] The process of the transmission shaft 8 moving forward: Figure 5 As shown, the motor gear 411 of the driving 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 in FIG. Fig.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 driving wheel 6, so that the switching gear 45 is driven to rotate through the rotating sleeve 48, and the switching gear 45 drives the large driving wheel 6 to rotate. The large driving wheel 6 drives the driving gear 7 to rotate through the planetary reducer 15, and the driving gear 7 drives the transmission shaft 8 to move forward through the rack to achieve pressurization.

[0048] The process of resetting the transmission shaft 8 backwards is as follows: manually rotating the rotating sleeve 47 to make it move in the reverse direction, such as Fig.11 As shown, the thrust spring 49 drives the switching gear 45 to slide onto the receiving shaft 43 and separate from the large driving wheel 6 and the rotating sleeve 48, and the transmission shaft 8 quickly resets backward under the elastic force of the reset spring 10.

[0049] Of course, the above description is not limited to the above examples. Technical features not described in the present invention can be achieved by or by using existing technologies, which will not be described here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention, and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A liquid ultra-high pressure device, characterized in that: The invention comprises a measuring device, a first switch valve (20), a second switch valve (17) and an instrument panel (22). The measuring device comprises an outer cylinder (1), an intermediate cylinder (2) and a transmission shaft fixed cylinder (3) which are connected in sequence from front to back. The outer cylinder (1), the intermediate cylinder (2) and the transmission shaft fixed cylinder (3) form a cylindrical inner cavity. A hydraulic shaft (9) is installed in the cylindrical inner cavity. A transmission shaft (8) is fixedly connected to the rear end of the hydraulic shaft (9). A sealed plunger cavity is formed between the front end of the hydraulic shaft (9) and the cylindrical inner cavity. The first switch valve (20), the second switch valve (17) and the instrument panel (22) are all connected to the plunger cavity. A planetary reducer (15) is fixedly connected to the transmission shaft fixed cylinder (3). A driving gear (7) is fixedly connected to the output shaft of the planetary reducer (15). A rack meshing with the driving gear (7) is provided on the transmission shaft (8). A large driving wheel (6) is fixedly connected to the input shaft of the planetary reducer (15).

2. A 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), the main output pipe (14) is connected to a first tee (15), 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), two outlets of the second tee (18) are respectively connected to the 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 switch valve (20) is connected to the first output pipe (19).

3. A 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) via threads.

4. A liquid ultra-high pressure device according to claim 1, characterized in that: A shaft seal ring (27) is installed at the front end of the hydraulic shaft (9), and a screw (28) is connected to the front end of the hydraulic shaft (9). The screw (28) presses the shaft seal ring (27) onto the front end of the hydraulic shaft (9) via a gasket (26).

5. The liquid ultra-high pressure device according to claim 1, characterized in that: The rear end of the outer cylinder body (1) is connected to the middle cylinder body (2) via threads, and the rear end of the middle cylinder body (2) is connected to the transmission shaft fixed cylinder body (3) via threads.

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 body (1) and the intermediate cylinder body (2), and a second sealing ring (25) is installed between the intermediate cylinder body (2) and the transmission shaft fixed cylinder body (3).

7. The liquid ultra-high pressure device according to claim 1, characterized in that: The invention also includes a driving mechanism (4) for driving the large driving wheel (6) to rotate, the driving mechanism (4) including a driving mounting plate (41) fixedly connected to the outside of the transmission shaft fixed cylinder (3), a fixed shaft (42) fixedly connected to the driving mounting plate (41), and a receiving shaft (43) fixedly connected to the end of the fixed shaft (42), a rotating sleeve (48) sleeved on the fixed shaft (42), an output gear (44) fixedly connected to the rotating sleeve (48), a switching gear (45) axially slidably connected to the rotating sleeve (48), a thrust spring (49) installed between the output gear (44) and the switching gear (45), and also includes a driving motor (412) for driving the output gear (44) to rotate and a pressing mechanism for pushing the switching gear (45) in the direction of the output gear (44); the transmission shaft fixed cylinder (3) is provided with a return spring (10) for driving the transmission shaft (8) to move backward; When the pressing mechanism pushes the switching gear (45) in the direction of the output gear (44) so ​​that the switching gear (45) meshes with the large driving 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 driving 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 separate from the large driving wheel (6) and the rotating sleeve (48), and the transmission shaft (8) quickly returns to its original position under the elastic force of the return spring (10).

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

9. A liquid ultra-high pressure device according to claim 7, characterized in that: The clamping mechanism comprises a rotating sleeve (47) sleeved on a receiving shaft (43), an inclined guide groove (43) being formed on the receiving shaft (43), an inserting shaft (471) inserted into the guide groove (43) being fixedly connected to the inner ring of the rotating sleeve (47), and a thrust bearing (46) being arranged between the rotating sleeve (47) and the switching gear (45).

10. The liquid ultra-high pressure device according to claim 7, characterized in that: An intermediate gear (410) meshing with the output gear (44) is axially connected to the drive mounting plate (41), and a motor gear (411) meshing with the intermediate gear (410) is fixedly connected to the rotating shaft of the drive motor (412).

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