Large flow gas-liquid booster pump

Abstract

The utility model provides a kind of high flow gas-liquid booster pump, including cylinder and the upper oil pressure component and lower oil pressure component respectively installed in the upper and lower sides of cylinder;Cylinder includes cylinder body, piston slidably installed in cylinder body and boost rod passing in piston, the upper end of boost rod passes through cylinder and extends into the upper oil pressure body of upper oil pressure component, and its lower end passes through cylinder and extends into the lower oil pressure body of lower oil pressure component;Piston separates cylinder into cylinder upper chamber and cylinder lower chamber, cylinder upper chamber and cylinder lower chamber are respectively connected with upper chamber drive passage and lower chamber drive passage, and reversing valve is installed on upper chamber drive passage and lower chamber drive passage;Reversing valve is used to control its air inlet and upper chamber drive passage or lower chamber drive passage communication, so that boost rod makes cyclic reciprocating motion;A kind of high flow gas-liquid booster pump provided by the utility model has the advantages of large flow, small pressure impact, low noise and simple structure.

Description

Technical Field

[0001] This utility model relates to the field of gas-liquid booster pump technology, specifically to a high-flow gas-liquid booster pump. Background Technology

[0002] In modern industrial production, punch presses, injection molding machines, die-casting machines, and various automated equipment are widely used in various manufacturing fields. As a key component in the production process, the efficiency of mold replacement has a crucial impact on production efficiency. Quick mold change systems have emerged to address this need, significantly shortening mold changeover time, improving equipment utilization, and thus enhancing overall production efficiency. Therefore, they have found widespread application in numerous industries.

[0003] The hydraulic system of a quick mold change system typically uses a pneumatic-hydraulic booster pump to provide pressurized oil, while the mold clamp uses the pressurized oil as its power source to clamp the mold edges. The pneumatic-hydraulic booster pump, with its unique working principle, utilizes low-pressure gas as an energy source to pressurize the liquid, offering advantages such as a wide pressure adjustment range, low energy consumption, and automatic pressure holding. This makes it an indispensable key component in quick mold change systems and many other industries.

[0004] However, in the field of rapid mold change systems, with the continuous expansion of industrial production scale and the increasing demand for production, the application of large-tonnage equipment is becoming more and more common. These large-tonnage equipment are equipped with mold clamps that are not only large in size but also numerous, which leads to a significant increase in the demand for high-pressure oil during the mold clamping process. In order to meet the requirements of production rhythm and shorten mold clamping time, the gas-liquid booster pump must have a large flow rate.

[0005] Currently, most pneumatic-hydraulic booster pumps used in rapid mold change systems are spring-return single-acting pumps. These pumps only pump oil during the pressure stroke, not the suction stroke. This results in a relatively small overall flow rate, which cannot meet the high-pressure oil supply requirements of large-tonnage equipment, leading to prolonged mold clamping time and reduced production efficiency. Furthermore, due to their operating characteristics, they generate significant pressure shocks during operation. This not only causes additional wear and damage to other components in the hydraulic system, reducing component lifespan and increasing equipment maintenance costs, but may also affect mold installation accuracy, ultimately impacting product quality.

[0006] In addition, single-acting gas-liquid booster pumps also suffer from significant exhaust noise during operation. This not only causes noise pollution in the working environment, but prolonged exposure to such noise can also adversely affect the health of operators, such as causing hearing damage. Therefore, developing a gas-liquid booster pump with high flow rate, low pressure impact, and low exhaust noise is of great significance for improving the performance of rapid mold change systems and meeting the needs of modern industry for efficient, stable, and environmentally friendly production. Utility Model Content

[0007] (a) Technical problems to be solved

[0008] In view of this, the present invention provides a high-flow gas-liquid booster pump, which has the advantages of large flow rate, small pressure impact, low noise and simple structure.

[0009] (II) Technical Solution

[0010] To solve the aforementioned technical problem, this utility model provides a high-flow-rate gas-liquid booster pump, including a cylinder and an upper hydraulic assembly and a lower hydraulic assembly respectively installed on the upper and lower sides of the cylinder. The upper and lower hydraulic assemblies are respectively connected to each other through an oil outlet pipe and an oil inlet pipe. The cylinder includes a cylinder body fixed between the upper and lower hydraulic assemblies, a piston slidably installed in the cylinder body, and a booster rod passing through the piston. The upper end of the booster rod passes through the cylinder and extends into the upper hydraulic body of the upper hydraulic assembly, and its lower end passes through the cylinder and extends into the lower hydraulic body of the lower hydraulic assembly. When the booster rod moves to one side, one end of the booster rod gradually withdraws from one hydraulic body to draw in oil, while the other end of the booster rod gradually presses into another hydraulic body to discharge oil.

[0011] The piston divides the cylinder into an upper chamber and a lower chamber. The upper chamber and the lower chamber are respectively connected to an upper chamber drive passage and a lower chamber drive passage. A reversing valve is installed on the upper chamber drive passage and the lower chamber drive passage. The reversing valve is used to control its air inlet to connect with the upper chamber drive passage or the lower chamber drive passage, thereby causing the booster rod to perform cyclic reciprocating motion.

[0012] In some embodiments, the reversing valve has an exhaust port, and a muffler is installed at the exhaust port; when the upper chamber drive passage is connected to the air inlet, the lower chamber drive passage is connected to the exhaust port; when the lower chamber drive passage is connected to the air inlet, the upper chamber drive passage is connected to the exhaust port.

[0013] In some embodiments, a cylinder top cover is installed on the top of the cylinder body, and a cylinder bottom cover is installed on the bottom of the cylinder body. A ventilation assembly is respectively provided in the cylinder top cover and the cylinder bottom cover. The ventilation assembly includes an actuating rod that extends into the inner cavity of the cylinder. When the actuating rod is actuated by the piston, it can control the reversing valve core of the reversing valve to switch between different positions, thereby controlling the air inlet to communicate with the upper cavity drive passage or the lower cavity drive passage.

[0014] In some embodiments, the cylinder top cover is provided with port A, port B, port C and port D, the cylinder bottom cover is provided with port E, port F and port G, and a first steel pipe and a second steel pipe are installed between the cylinder top cover and the cylinder bottom cover.

[0015] The upper chamber of the cylinder, port A, and port A' of the reversing valve are sequentially connected. Port B' of the reversing valve, port B, the second steel pipe, port E, and the lower chamber of the cylinder are sequentially connected. The upper chamber of the upper air exchange assembly inside the cylinder top cover, port C, and port C' of the reversing valve are sequentially connected. The lower chamber of the upper air exchange assembly, port D, the first steel pipe, port F, and the upper chamber of the lower air exchange assembly inside the cylinder bottom cover are connected. The lower chamber of the lower air exchange assembly, port G, and the atmosphere are sequentially connected.

[0016] In some embodiments, the reversing valve includes a reversing valve body fixedly connected to the cylinder top cover, a reversing valve sleeve fixedly within the reversing valve body, a reversing valve core slidably installed within the reversing valve sleeve, and a valve cover installed at one end of the reversing valve body, wherein a muffler is threadedly connected to the reversing valve body.

[0017] In some embodiments, the reversing valve body is provided with an air inlet, an A' port, a B' port, a C' port, a D' port, an H port, and a K port; the reversing valve sleeve is provided with an L port, an M port, an N port, and a P port; the reversing valve core is provided with a Q port; the valve cover is provided with an R port; the large end of the reversing valve core and the inner hole of the reversing valve sleeve form a cavity a; the O-ring provided on the reversing valve core and the inner hole of the reversing valve sleeve form a sealed cavity b; and the reversing valve sleeve, the reversing valve core, and the valve cover together form a cavity c.

[0018] In some embodiments, port A' is connected to port M, port B' is connected to port L, port D' is connected to port R, port H is connected to port N and the muffler respectively, and port K is connected to port P and the atmosphere respectively;

[0019] One end of port L is connected to port B', and the other end is connected to the air inlet or port N depending on the position of the reversing valve core; one end of port M is connected to port A', and the other end is connected to port Q or port N depending on the position of the reversing valve core; one end of port P is connected to port K, and the other end is connected to cavity a.

[0020] One end of the Q port is connected to the air inlet, and the other end is connected to the M port or blocked by the cavity b, depending on the different positions of the reversing valve core; one end of the R port is connected to the D' port, and the other end is connected to the cavity c.

[0021] In some embodiments, the ventilation assembly further includes a locking screw and a return spring, the locking screw being mounted on the cylinder top cover or the cylinder bottom cover, one end of the return spring abutting against the locking screw, and the other end abutting against the actuating rod.

[0022] In some embodiments, the upper hydraulic assembly includes an upper hydraulic body, an upper oil inlet block, and an upper oil outlet block. The upper hydraulic body is fixed to the cylinder top cover. An upper oil outlet check valve is provided in the upper hydraulic body and is threadedly connected to the upper hydraulic body. An upper oil inlet check valve is provided on the upper oil inlet block and is threadedly connected to the upper oil inlet block.

[0023] In some embodiments, the lower hydraulic assembly includes the lower hydraulic body, the lower oil inlet block, and the lower oil outlet block. The lower hydraulic body is fixed to the cylinder bottom cover. A lower oil outlet check valve is provided in the lower hydraulic body and is threadedly connected to the lower hydraulic body. A first lower oil inlet check valve and a second lower oil inlet check valve are threadedly connected in the lower oil inlet block.

[0024] (III) Beneficial Effects

[0025] Compared with the prior art, the beneficial effects that at least one technical solution adopted in the embodiments of this specification can achieve include at least:

[0026] 1) This gas-liquid booster pump adopts a dual-acting mode, which can continuously suck in and discharge oil in one working stroke. Compared with the traditional single-acting pump, the flow rate is significantly increased, which can fully meet the demand of high-pressure oil for rapid supply of mold clamping device of large-tonnage equipment, effectively shorten the mold clamping time, greatly improve the overall efficiency of the rapid mold changing system, and ensure the efficient operation of the production rhythm.

[0027] 2) The double-acting air-liquid booster pump has less pressure impact, which greatly reduces damage to hydraulic components. Especially for components such as hydraulic seals that are susceptible to pressure impact, it effectively avoids problems such as premature wear and leakage caused by pressure impact, extends the service life of hydraulic components, reduces equipment maintenance costs, ensures the stable operation of the hydraulic system, ensures mold installation accuracy, and thus improves product quality.

[0028] 3) The reversing valve adopts a brand-new structure and principle, which not only effectively ensures the smooth flow of air, but also significantly reduces the exhaust noise of the double-acting gas-liquid booster pump during operation, significantly improves the working environment, reduces the potential harm of noise pollution to the health of operators, and meets the requirements of modern industry for environmental protection and occupational health.

[0029] 4) This gas-liquid booster pump has fewer parts and a simpler structure; during equipment assembly, operation is simpler and faster, which can effectively improve production efficiency; fewer parts mean fewer points of failure, and the simple structure also helps the coordinated work between the components to be more stable and reliable, effectively extending the service life of the pump and improving the practicality of the equipment. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a structural schematic diagram of a high-flow gas-liquid booster pump according to the present invention from the main view perspective;

[0032] Figure 2 This is a side view schematic diagram of the structure of a high-flow gas-liquid booster pump according to this utility model;

[0033] Figure 3 This is a perspective view of a high-flow-rate gas-liquid booster pump according to this utility model;

[0034] Figure 4 This is a cross-sectional view of a high-flow gas-liquid booster pump according to this utility model;

[0035] Figure 5 This is a structural schematic diagram of the cylinder top cover in a high-flow gas-liquid booster pump according to the present invention, viewed from the main perspective.

[0036] Figure 6 This is a cross-sectional view of the cylinder top cover in a high-flow gas-liquid booster pump according to this utility model;

[0037] Figure 7 This is a top view structural diagram of the cylinder bottom cover in a high-flow gas-liquid booster pump according to this utility model.

[0038] Figure 8 This is a cross-sectional view of the cylinder bottom cover in a high-flow gas-liquid booster pump according to this utility model;

[0039] Figure 9 This is a structural schematic diagram of the reversing valve in a high-flow gas-liquid booster pump according to the present invention, viewed from the rear.

[0040] Figure 10 This is a cross-sectional view of the reversing valve in a high-flow gas-liquid booster pump according to this utility model.

[0041] Figure 11.1 This is a schematic diagram of the downward movement of the piston and booster rod in a high-flow gas-liquid booster pump according to this utility model;

[0042] Figure 11.2 This is a schematic diagram of the piston and booster rod descending to the lower limit position in a high-flow gas-liquid booster pump according to this utility model;

[0043] Figure 11.3 This is a schematic diagram of the upward movement of the piston and booster rod in a high-flow gas-liquid booster pump according to this utility model;

[0044] Figure 11.4 This is a schematic diagram of the structure of the piston and booster rod moving to the upper limit position in a high-flow gas-liquid booster pump according to this utility model;

[0045] The component names corresponding to the various reference numerals in the figure are as follows: 1. Cylinder; 101. Upper chamber of cylinder; 102. Lower chamber of cylinder; 11. Cylinder body; 12. Cylinder top cover; 121. Upper air exchange assembly; 1211. Upper actuating rod; 1212. Upper locking screw; 1213. Upper return spring; 1214. Upper gasket; 13. Cylinder bottom cover; 131. Lower air exchange assembly; 1311. Lower actuating rod; 1312. Lower locking screw; 1313. Lower return spring; 1314. Lower gasket; 14. Piston; 15. Boost rod; 2. Reversing valve; 21. Reversing valve body; 22. Reversing valve sleeve; 23. Reversing valve core; 24. Valve cover; 25. Silencer; 201. Air inlet; 3. Upper hydraulic assembly; 31. Upper hydraulic body; 311. Upper outlet check valve; 32. Upper inlet block; 321. Upper inlet check valve; 33. Upper outlet block; 4. Lower hydraulic assembly; 41. Lower hydraulic body; 411. Lower outlet check valve; 42. Lower inlet block; 421. First lower inlet check valve; 422. Second lower inlet check valve; 43. Lower outlet block; 51. First steel pipe; 52. Second steel pipe; 61. Outlet pipe; 62. Inlet pipe. Detailed Implementation

[0046] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0047] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0049] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0050] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0051] Combination Figure 1-Figure 1 As shown in Figure 1, this utility model provides a high-flow gas-liquid booster pump, including a cylinder 1, a reversing valve 2, an upper hydraulic assembly 3, and a lower hydraulic assembly 4.

[0052] like Figure 4 As shown, cylinder 1 includes cylinder body 11, cylinder top cover 12 disposed on top of cylinder body 11, cylinder bottom cover 13 disposed at bottom of cylinder body 11, and piston 14 and booster rod 15 nested inside cylinder body 11. Cylinder top cover 12 and cylinder bottom cover 13 are connected by four hexagon socket head cap flanges.

[0053] A vent hole A is provided on the cylinder top cover 12, which is connected to the reversing valve 2 and the upper chamber 101 of the cylinder. A vent hole B is provided on the cylinder top cover, which is connected to the second steel pipe 52 and then connected to the reversing valve 2 and the vent hole E of the cylinder bottom cover. A vent hole C is provided on the cylinder top cover, which is connected to the reversing valve 2 and the upper chamber of the upper air exchange assembly 121. A vent hole D is provided on the cylinder top cover, which is connected to the first steel pipe 51 and then connected to the lower chamber of the upper air exchange assembly 121 and the upper chamber of the lower air exchange assembly 131. A vent hole E is provided on the cylinder bottom cover 13. The vent hole E is connected to the second steel pipe 52 and then connected to the B port and the lower cylinder chamber 102 respectively. A vent hole F is provided on the cylinder bottom cover 13. The vent hole F is connected to the first steel pipe 51 and then connected to the lower chamber of the upper air exchange assembly 121 and the upper chamber of the lower air exchange assembly 131 respectively. A vent hole G is provided on the cylinder bottom cover 13. The vent hole G is connected to the lower chamber of the lower air exchange assembly 131 and the atmosphere respectively.

[0054] Combination Figure 6 and Figure 8 Both the cylinder top cover 12 and the cylinder bottom cover 13 are nested with ventilation components. The two components have identical structures and are symmetrically arranged vertically. The following description uses the upper ventilation component 121 as an example. The upper ventilation component 121 mainly includes: an upper actuating rod 1211, an upper locking screw 1212, an upper return spring 1213, and an upper gasket 1214. The upper actuating rod 1211 has a T-shaped structure, consisting of a head and a tail, which are slidably connected to the upper ventilation component mounting hole. Its tail extends out of the cylinder top cover 12 and into the cylinder body 11. When the piston 14 moves up and down until it contacts the tail of the upper actuating rod 1211, it pushes the upper actuating rod 1211 towards its head. The upper return spring 1213 is located in the upper ventilation component mounting hole, above the head of the upper actuating rod 1211. An upper locking screw 1212 is provided in the upper ventilation assembly mounting hole. The upper locking screw 1212 is located above the upper return spring 1213 and is connected to the cylinder top cover 12 by threads. An upper gasket 1214 is provided in the upper ventilation assembly mounting hole. The upper gasket 1214 is interference-fitted into the hole to prevent the O-ring from falling off when the upper actuating rod 1211 moves up and down.

[0055] Among them, the air exchange assembly inside the cylinder bottom cover 13 is the lower air exchange assembly 131. The lower air exchange assembly 131 mainly includes: lower trigger rod 1311, lower locking screw 1312, lower return spring 1313, lower liner 1314, etc. The connection method of each component is the same as that of the upper air exchange assembly 121.

[0056] like Figure 4As shown, a piston 14 and a booster rod 15 are nested in the cylinder body 11. The piston 14 has a threaded hole at its center and a sealing groove on its outer side, and can move up and down within the cylinder body 11. The booster rod 15 has a shoulder, external threads, and a retaining ring groove. Both ends of the booster rod 15 extend into the upper hydraulic body 31 and the lower hydraulic body 41, respectively, and are slidably connected to the hydraulic body through a U-shaped sealing ring. The piston 14 and the booster rod 15 are connected by threads and fixed with a shaft elastic retaining ring.

[0057] The reversing valve 2 is connected to the outer side of the cylinder top cover 12 by three screws. The reversing valve 2 mainly includes: reversing valve body 21, reversing valve sleeve 22, reversing valve core 23, valve cover 24, and muffler 25. The muffler 25 is installed on the reversing valve body 21 by a threaded connection to reduce the noise generated by the exhaust from the upper and lower chambers of the cylinder 11.

[0058] Combination Figures 5 to 10 An air inlet 201 is provided on the reversing valve body 21, which is connected to low-pressure gas. A vent C' is provided on the reversing valve body 21, which is connected to both the air inlet 201 and the C port. A vent B' is provided on the reversing valve body 21, which is connected to both the B port and the vent L port of the reversing valve sleeve 22. A vent A' is provided on the reversing valve body 21, which is connected to both the vent A port of the cylinder top cover 12 and... The vent port M of the reversing valve sleeve 22 is connected; a vent port D' is provided on the reversing valve body 21, which is connected to the vent port D of the cylinder top cover 12 and the vent port R of the valve cover 24 respectively; a vent port H is provided on the reversing valve body 21, which is connected to the vent port N of the reversing valve sleeve 22 and the muffler 25 respectively; a vent port K is provided on the reversing valve body 21, which is connected to the vent port P of the reversing valve sleeve 22 and the atmosphere respectively.

[0059] A vent L is provided on the reversing valve sleeve 22. One end of the L is connected to the vent B' of the reversing valve body 21, and the other end is connected to the air inlet 201 of the reversing valve body 21 or the vent N of the reversing valve sleeve 22, depending on the position of the reversing valve core 23. A vent M is provided on the reversing valve sleeve 22. One end of the M is connected to the vent A' of the reversing valve body 21, and the other end is connected to the vent Q of the reversing valve core 23 or the vent N of the reversing valve sleeve 22, depending on the position of the reversing valve core 23. A vent P is provided on the reversing valve sleeve 22. One end of the P is connected to the vent K of the reversing valve body 21, and the other end is connected to the cavity a formed by the large end of the reversing valve core 23 and the inner hole of the reversing valve sleeve 22.

[0060] A vent Q is provided on the reversing valve core 23. One end of the Q vent is connected to the air inlet 201 of the reversing valve body 21, and the other end is connected to the vent M of the reversing valve sleeve 22, or blocked by the O-ring on the reversing valve core 23 and the inner hole of the reversing valve sleeve 22 to form a sealed cavity b. A vent R is provided on the valve cover 24. One end of the R vent is connected to the vent D' of the reversing valve body 21, and the other end is connected to the cavity c formed by the reversing valve sleeve 22, the reversing valve core 23, and the valve cover 24.

[0061] When the reversing valve core 23 approaches the air inlet 201 of the reversing valve body 21, the upper chamber drive passage I is formed by the air inlet 201 of the reversing valve body 21, the air outlet Q of the reversing valve core 23, the air outlet M of the reversing valve sleeve 22, the air outlet A' of the reversing valve body 21, and the air outlet A of the cylinder top cover 12. The lower chamber exhaust passage I' is formed by the air outlet E of the cylinder bottom cover 13, the second steel pipe 52, the air outlet B of the cylinder top cover 12, the air outlet B' of the reversing valve body 21, the air outlet L of the reversing valve sleeve 22, the air outlet N of the reversing valve sleeve 22, the air outlet H of the reversing valve body 21, and the muffler 25.

[0062] When the reversing valve core 23 is far from the air inlet of the reversing valve body 21, the lower chamber drive passage J is formed by the air inlet 201 of the reversing valve body 21, the air vent L port of the reversing valve sleeve 22, the air vent B' port of the reversing valve body 21, the air vent B port of the cylinder top cover 12, the second steel pipe 52, and the air vent E port of the cylinder bottom cover 13. The upper chamber exhaust passage J' is formed by the air vent A port of the cylinder top cover 12, the air vent A' port of the reversing valve body 21, the air vent M port of the reversing valve sleeve 22, the air vent H port of the reversing valve body 21, and the muffler 25.

[0063] The reversing drive passage i is composed of the air inlet 201 of the reversing valve body 21, the air vent C port of the cylinder top cover 12, the air vent D port of the cylinder top cover 12, the air vent D' port of the reversing valve body 21, and the air vent R port of the valve cover 24. The reversing exhaust passage j is composed of the air vent R port of the valve cover 24, the air vent D' port of the reversing valve body 21, the air vent D port of the cylinder top cover 12, the first steel pipe 51, the air vent F port of the cylinder bottom cover 13, and the air vent G port of the cylinder bottom cover 13.

[0064] like Figure 4As shown, the upper hydraulic assembly 3 mainly includes: an upper hydraulic body 31, an upper oil inlet block 32, and an upper oil outlet block 33. The upper hydraulic body 31 is locked to the cylinder top cover by a hexagonal nut. An upper oil outlet check valve 311 is provided on the upper hydraulic body 31, and the upper oil outlet check valve 311 is connected to the upper hydraulic body 31 by threads; the upper hydraulic body 31 is provided with a U-shaped sealing ring mounting hole and a seat mounting hole, and a pneumatic sealing ring is provided on the seat. The upper oil inlet block 32 is connected to the upper hydraulic body 31 by four internal hexagonal screws, and an upper oil inlet check valve 321 is provided on the upper oil inlet block 32, and the upper oil inlet check valve 321 is connected to the upper oil inlet block 32 by threads; the upper oil inlet block 32 is provided with an insertion hole for an oil inlet pipe 62. The upper oil outlet block 33 is connected to the upper hydraulic body 31 by four internal hex screws, and the upper oil outlet block 33 is provided with an insertion hole for the oil outlet pipe 61.

[0065] The lower hydraulic assembly 4 mainly includes a lower hydraulic body 41, a lower inlet block 42, and a lower outlet block 43. The lower hydraulic body 41 has the same structure and connection method as the upper hydraulic body 31. A lower outlet check valve 411 is provided on the lower hydraulic body 41, and the lower outlet check valve 411 is connected to the upper hydraulic body 41 by threads. The lower inlet block 42 is connected to the lower hydraulic body 41 by four Allen screws. A first lower inlet check valve 421 and a second lower inlet check valve 422 are provided on the lower inlet block 42, and are connected to the lower inlet block by threads. The lower inlet block 42 is provided with an insertion hole for an inlet steel pipe 62 and an oil inlet. The lower outlet block 43 is connected to the lower hydraulic body 41 by four Allen screws. The lower outlet block is provided with an insertion hole for an outlet steel pipe 61 and an oil outlet.

[0066] When piston 14 moves downward, the lower end of booster rod 15 enters the lower hydraulic body 41, discharging the oil previously in the lower hydraulic body 41 through the lower oil outlet check valve 411 and the lower oil outlet block 43. Meanwhile, the upper end of booster rod 15, originally deep within the upper hydraulic body 31, gradually withdraws from the upper hydraulic body 31 as piston 14 moves downward, creating a partial vacuum within the upper hydraulic body 31, causing it to draw oil in through the oil inlet. Conversely, when piston 14 moves upward, the upper end of booster rod 15 enters the upper hydraulic body 31, discharging the oil drawn into it through the upper oil outlet check valve 311, the oil outlet pipe 61, and the lower oil outlet block 43. The lower end of booster rod 15 withdraws from the lower hydraulic body 41, creating a partial vacuum within the lower hydraulic body 41, causing it to draw oil in through the oil inlet. Due to the blocking effect of the second lower inlet check valve 422, when the lower oil pressure body 41 draws oil, the oil in the oil inlet pipe 62 and the upper oil inlet block 32 will not flow back to the oil inlet, ensuring the continuity of oil drawing by the upper oil pressure body 31, thereby increasing the flow rate of the pumped oil.

[0067] Figures 11.1 to 11.4 show the working principle diagrams of the double-acting gas-liquid booster pump provided by the double-acting gas-liquid booster pump.

[0068] As shown in Figure 11.1, at this time, the reversing valve core 23 is close to the air inlet of the reversing valve body 21. Low-pressure gas enters the upper chamber 101 of the cylinder through the upper chamber drive passage I, pushing the piston 14 and the booster rod 15 downward. The lower end of the booster rod 15 gradually penetrates into the lower hydraulic body 41, discharging the high-pressure oil in the lower hydraulic body 41. As the upper end of the booster rod 15 is gradually withdrawn from the upper hydraulic body 31, a partial vacuum is formed inside the upper hydraulic body 31, causing the upper hydraulic body 31 to draw in oil from the oil inlet. The gas in the lower chamber 102 of the cylinder is discharged through the lower chamber exhaust passage I'. Under the elastic force of the upper return spring 1213, the upper trigger rod 1211 presses the O-ring, blocking the connection between the vent C port and the vent D port of the cylinder top cover 12, that is, blocking the reversing drive passage I, and the low-pressure gas is sealed in the upper chamber of the upper ventilation assembly 121.

[0069] like Figure 11.2 and 11.3 As shown, as the piston 14 and booster rod 15 continue to move downwards, until the piston 14 touches the tail of the lower actuating rod 1311, it pushes the lower actuating rod 1311 and the O-ring downwards, connecting the upper and lower chambers of the lower venting assembly 131, making chamber c connected to the reversing exhaust passage j, i.e., open to the atmosphere. At this time, the low-pressure gas pushes the reversing valve core 23 to move away from the intake port 201, connecting the lower chamber drive passage J and the upper chamber exhaust passage J'. The low-pressure gas enters the lower chamber 102 of the cylinder through the lower chamber drive passage J, pushing the piston 14 and booster rod 15 upwards. The upper end of the booster rod 15 gradually penetrates into the upper hydraulic body 31, discharging the high-pressure oil in the upper hydraulic body 31. As the upper end of the booster rod 15 gradually withdraws from the lower hydraulic body 41, a partial vacuum is formed inside the lower hydraulic body 41, causing the lower hydraulic body 41 to draw in oil from the oil inlet. Gas in the upper chamber 101 of the cylinder is discharged through the upper chamber exhaust passage J'. After the piston 14 disengages from the tail of the lower actuating rod 1311, under the elastic force of the lower return spring 1313, the lower actuating rod 1311 presses the O-ring, blocking the connection between the vent F port and the vent G port of the cylinder bottom cover 13, and the reversing exhaust passage j is closed, so that the chamber c returns to the sealed state.

[0070] As shown in Figure 11.4, as the piston 14 and booster rod 15 continue to move upward until they touch the tail of the upper actuating rod 1211, they push the upper actuating rod 1211 and the O-ring upward, connecting the upper and lower chambers of the upper ventilation assembly 121, thus connecting chamber c with the reversing drive passage i. At this time, due to the large area of ​​the low-pressure gas in chamber c, the thrust difference on both sides of the reversing valve core 23 causes the reversing valve core 23 to move towards the end closer to the air inlet, connecting the upper chamber drive passage I and the lower chamber exhaust passage I', causing the pump to return to the working state shown in Figure 11.1. The low-pressure gas enters the upper chamber of the cylinder through the upper chamber drive passage I, pushing the piston 14 and booster rod 15 downward, discharging the high-pressure oil in the lower hydraulic body 41. As the upper end of the booster rod 15 is gradually withdrawn from the upper hydraulic body 31, a partial vacuum is formed inside the upper hydraulic body 31, causing the upper hydraulic body 31 to draw in oil from the oil inlet. Gas in the lower chamber of the cylinder is discharged through the lower chamber exhaust passage I'. After the piston 14 disengages from the tail of the upper actuating rod 1211, the low-pressure gas is sealed in the upper chamber of the upper ventilation assembly 121 by the elastic force of the upper return spring 1213. This cycle repeats, achieving the purpose of converting pneumatic energy into hydraulic energy.

[0071] In this specification, the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the descriptions of the embodiments described later are relatively simple, and relevant parts can be referred to the descriptions of the foregoing embodiments.

[0072] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A high flow gas-liquid booster pump characterized by: The system includes a cylinder (1) and an upper hydraulic assembly (3) and a lower hydraulic assembly (4) respectively installed on the upper and lower sides of the cylinder (1). The upper hydraulic assembly (3) and the lower hydraulic assembly (4) are respectively connected to each other through an oil outlet pipe (61) and an oil inlet pipe (62). The cylinder (1) includes a cylinder body (11) fixed between the upper hydraulic assembly (3) and the lower hydraulic assembly (4), a piston (14) slidably installed in the cylinder body (11), and a piston passing through the piston (14). A booster rod (15) has its upper end passing through the cylinder (1) and extending into the upper hydraulic body (31) of the upper hydraulic assembly (3), and its lower end passing through the cylinder (1) and extending into the lower hydraulic body (41) of the lower hydraulic assembly (4). When the booster rod (15) moves to one side, one end of the booster rod (15) is gradually pulled away from a hydraulic body to draw in oil, while the other end of the booster rod (15) is gradually pressed into another hydraulic body to discharge oil. The piston (14) divides the cylinder (1) into an upper cylinder chamber (101) and a lower cylinder chamber (102). The upper cylinder chamber (101) and the lower cylinder chamber (102) are respectively connected to an upper chamber drive passage and a lower chamber drive passage. A reversing valve (2) is installed on the upper chamber drive passage and the lower chamber drive passage. The reversing valve (2) is used to control its air inlet (201) to connect with the upper chamber drive passage or the lower chamber drive passage, so that the booster rod (15) performs a cyclic reciprocating motion.

2. The high-flow-rate gas-liquid booster pump according to claim 1, characterized in that: The reversing valve (2) has an exhaust port, and a muffler (25) is installed at the exhaust port; when the upper cavity drive passage is connected to the air inlet (201), the lower cavity drive passage is connected to the exhaust port; when the lower cavity drive passage is connected to the air inlet (201), the upper cavity drive passage is connected to the exhaust port.

3. The high-flow-rate gas-liquid booster pump according to claim 1, characterized in that: The cylinder body (11) is equipped with a cylinder top cover (12) on the top and a cylinder bottom cover (13) on the bottom. The cylinder top cover (12) and the cylinder bottom cover (13) are respectively provided with air exchange components. The air exchange component includes an actuating rod that extends into the inner cavity of the cylinder (1). When the actuating rod is actuated by the piston (14), the reversing valve core (23) of the reversing valve (2) can be switched between different positions, thereby controlling the air inlet (201) to connect with the upper cavity drive passage or the lower cavity drive passage.

4. The high-flow-rate gas-liquid booster pump according to claim 3, characterized in that: The cylinder top cover (12) is provided with port A, port B, port C and port D, and the cylinder bottom cover (13) is provided with port E, port F and port G. A first steel pipe (51) and a second steel pipe (52) are installed between the cylinder top cover (12) and the cylinder bottom cover (13). The upper chamber (101) of the cylinder, port A and port A' of the reversing valve (2) are connected in sequence. Port B' of the reversing valve (2), port B, the second steel pipe (52), port E and the lower chamber (102) of the cylinder are connected in sequence. The upper chamber of the upper air exchange assembly (121) in the cylinder top cover (12), port C and port C' of the reversing valve (2) are connected in sequence. The lower chamber of the upper air exchange assembly (121), port D, the first steel pipe (51), port F and the upper chamber of the lower air exchange assembly (131) in the cylinder bottom cover (13) are connected. The lower chamber of the lower air exchange assembly (131), port G and the atmosphere are connected in sequence.

5. The high-flow-rate gas-liquid booster pump according to claim 3, characterized in that: The reversing valve (2) includes a reversing valve body (21) fixedly connected to the cylinder top cover (12), a reversing valve sleeve (22) fixed in the reversing valve body (21), a reversing valve core (23) slidably installed in the reversing valve sleeve (22), and a valve cover (24) installed at one end of the reversing valve body (21). A muffler (25) is threadedly connected to the reversing valve body (21).

6. The high-flow-rate gas-liquid booster pump according to claim 5, characterized in that: The reversing valve body (21) is provided with an air inlet (201), an A' port, a B' port, a C' port, a D' port, an H port, and a K port. The reversing valve sleeve (22) is provided with an L port, an M port, an N port, and a P port. The reversing valve core (23) is provided with a Q port. The valve cover (24) is provided with an R port. The large end of the reversing valve core (23) and the inner hole of the reversing valve sleeve (22) form a cavity a. The O-ring provided on the reversing valve core (23) and the inner hole of the reversing valve sleeve (22) form a sealed cavity b. The reversing valve sleeve (22), the reversing valve core (23), and the valve cover (24) together form a cavity c.

7. The high-flow-rate gas-liquid booster pump according to claim 6, characterized in that: The A' port is connected to the M port, the B' port is connected to the L port, the D' port is connected to the R port, the H port is connected to the N port and the silencer (25) respectively, and the K port is connected to the P port and the atmosphere respectively; One end of port L is connected to port B', and the other end is connected to the air inlet (201) or port N depending on the position of the reversing valve core (23); one end of port M is connected to port A', and the other end is connected to port Q or port N depending on the position of the reversing valve core (23); one end of port P is connected to port K, and the other end is connected to cavity a. One end of the Q port is connected to the air inlet (201), and the other end is connected to the M port or blocked by the cavity b depending on the different positions of the reversing valve core (23); one end of the R port is connected to the D' port, and the other end is connected to the cavity c.

8. The high-flow-rate gas-liquid booster pump according to claim 3, characterized in that: The ventilation assembly also includes a locking screw and a return spring. The locking screw is installed on the cylinder top cover (12) or the cylinder bottom cover (13). One end of the return spring abuts against the locking screw, and the other end abuts against the trigger rod.

9. The high-flow-rate gas-liquid booster pump according to claim 3, characterized in that: The upper hydraulic assembly (3) includes the upper hydraulic body (31), the upper oil inlet block (32), and the upper oil outlet block (33). The upper hydraulic body (31) is fixed to the cylinder top cover (12). An upper oil outlet check valve (311) is provided inside the upper hydraulic body (31), and the upper oil outlet check valve (311) is threadedly connected to the upper hydraulic body (31). An upper oil inlet check valve (321) is provided on the upper oil inlet block (32), and the upper oil inlet check valve (321) is threadedly connected to the upper oil inlet block (32).

10. The high-flow-rate gas-liquid booster pump according to claim 3, characterized in that: The lower hydraulic assembly (4) includes the lower hydraulic body (41), the lower oil inlet block (42), and the lower oil outlet block (43). The lower hydraulic body (41) is fixed to the cylinder bottom cover (13). A lower oil outlet check valve (411) is provided in the lower hydraulic body (41), and the lower oil outlet check valve (411) is threadedly connected to the lower hydraulic body (41). A first lower oil inlet check valve (421) and a second lower oil inlet check valve (422) are threadedly connected in the lower oil inlet block (42).

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