Pneumatic booster pump

Abstract

The pneumatic booster pump comprises a pressurizing assembly, a driving assembly and a cooling assembly. The pressurizing assembly is used for pressurizing fluid to be pressurized. The output end of the driving assembly is connected with the pressurizing end of the pressurizing assembly, the gas inlet end of the driving assembly is externally connected with driving gas, and the output end of the driving assembly can reciprocate through the driving gas so as to drive the pressurizing end of the pressurizing assembly to reciprocate, so that the fluid to be pressurized is pressurized; the cooling assembly comprises a first cooling pipeline and a first cooling cylinder, the first cooling cylinder is arranged on the peripheral surface of the pressurizing end of the pressurizing assembly, the first cooling cylinder comprises a first cooling cavity, the first cooling pipeline communicates with the first cooling cavity, and the first cooling pipeline is used for introducing cooling gas into the first cooling cavity; and the first cooling pipeline can be used for circulating cooling gas. Compared with the prior art, the first cooling cylinder is arranged on the peripheral face of the pressurizing end of the pressurizing assembly, the first cooling pipeline is arranged to be matched with the first cooling cylinder, efficient heat dissipation can be achieved, and the pressurizing efficiency is higher.

Description

Technical Field

[0001] This application relates to the field of booster equipment technology, and in particular to a pneumatic booster pump. Background Technology

[0002] A pneumatic booster pump is a common booster device, mainly consisting of a drive cylinder, a drive piston, a booster cylinder, and a booster piston. The drive cylinder is connected to an external air compressor to introduce compressed air to drive the drive piston. The drive piston and the booster piston are connected by a piston rod, allowing the booster piston to move in conjunction with the drive piston. Furthermore, the cross-sectional area and volume of the drive cylinder are much larger than those of the booster cylinder, thus effectively increasing the air pressure within the booster cylinder.

[0003] However, during the operation of a pneumatic booster pump, the gas is drastically compressed during the boosting process, causing a significant increase in gas temperature. Furthermore, the friction between the booster piston and the inner wall of the booster cylinder generates additional frictional heat, further exacerbating the temperature rise. At high temperatures, the booster piston is prone to deformation, resulting in a shorter service life and reduced boosting efficiency. Therefore, some manufacturers install cooling cylinder liners on the outside of the booster cylinder, dissipating heat through heat exchange between the outer surface of the cylinder liner and the air.

[0004] In the process of realizing this invention, the inventors discovered that existing pneumatic booster pumps have at least the following problems: only a cylinder liner is fitted on the outer circumference of the booster cylinder for heat dissipation, which has a poor heat dissipation effect. At the same time, this also limits the boosting performance of the pneumatic booster pump, thereby limiting the boosting efficiency.

[0005] Therefore, the above problems need to be solved. Summary of the Invention

[0006] The purpose of this application is to provide a pneumatic booster pump with good heat dissipation and high boosting efficiency.

[0007] To achieve the above objectives, the pneumatic booster pump provided in this application includes a boosting component, a driving component, and a cooling component. The boosting component is used to boost the pressure of a fluid to be boosted. The output end of the driving component is connected to the boosting end of the boosting component, and the inlet end of the driving component is externally connected to a driving gas. The output end of the driving component can reciprocate by the driving gas to drive the boosting end of the boosting component to reciprocate, thereby boosting the pressure of the fluid to be boosted. The cooling component includes a first cooling pipe and a first cooling cylinder. The first cooling cylinder is disposed on the outer peripheral surface of the boosting end of the boosting component. The first cooling cylinder includes a first cooling chamber. The first cooling pipe communicates with the first cooling chamber. The first cooling pipe is used to introduce cooling gas into the first cooling chamber, and the first cooling pipe allows the cooling gas to circulate.

[0008] Compared with existing technologies, the pneumatic booster pump provided in this application initially cools the booster end of the booster assembly by placing a first cooling cylinder on the outer peripheral surface of the booster assembly, through heat exchange between the outer peripheral surface of the first cooling cylinder and the air. Furthermore, by connecting a first cooling pipe to the first cooling chamber of the first cooling cylinder and introducing cooling gas into the first cooling pipe, the booster end of the booster assembly is further efficiently cooled through heat exchange between the inner peripheral surface of the first cooling cylinder and the cooling gas. Therefore, the pneumatic booster pump provided in this application, by incorporating a cooling component on the booster assembly, can efficiently dissipate heat from the booster end of the booster assembly, thereby keeping the operating temperature of the booster end within a suitable range. This extends the service life of the booster end of the booster assembly while allowing it to fully utilize its boosting performance, thus effectively improving boosting efficiency.

[0009] Specifically, the pressurization assembly includes a piston rod, a first-stage pressurization cylinder, and a first-stage pressurization piston. The first-stage pressurization cylinder is used to contain the fluid to be pressurized. The piston rod is movably housed within the first-stage pressurization cylinder and is connected to the output end of the drive assembly. The first cooling cylinder is sleeved on the outer circumferential surface of the first-stage pressurization cylinder. The first-stage pressurization piston is connected to the piston rod and is used to pressurize the fluid to be pressurized and discharge the pressurized fluid from the first-stage pressurization cylinder.

[0010] Specifically, the boosting assembly further includes a secondary boosting cylinder and a secondary boosting piston. The secondary boosting cylinder is connected to the primary boosting cylinder, and the cross-sectional area of ​​the secondary boosting cylinder is smaller than that of the primary boosting cylinder. The piston rod extends into the secondary boosting cylinder, and the secondary boosting piston is also connected to the piston rod. The secondary boosting piston is used to boost the fluid to be boosted and discharge the boosted fluid from the secondary boosting cylinder.

[0011] Specifically, the cooling assembly further includes a second cooling pipe and a second cooling cylinder. The second cooling cylinder is sleeved on the outer peripheral surface of the second-stage booster cylinder. The second cooling cylinder includes a second cooling chamber. One end of the second cooling pipe is connected to the outlet end of the first cooling chamber, and the other end of the second cooling pipe is connected to the second cooling chamber. The driving gas after completing the work can be discharged from the second cooling chamber.

[0012] Specifically, the pneumatic booster pump also includes a muffler, which is disposed on the outer peripheral surface of the first-stage booster cylinder and is connected to the air outlet of the first cooling chamber.

[0013] Specifically, the drive assembly includes a drive cylinder and a drive piston. The drive cylinder is used to contain the drive gas. The piston rod extends into the drive cylinder. The drive piston is connected to the piston rod. The drive gas is used to drive the drive piston to move within the drive cylinder.

[0014] Specifically, the pneumatic booster pump further includes a reversing assembly, which includes a reversing chamber and a reversing piston. The reversing chamber is used to introduce the driving gas. The reversing chamber is disposed on the driving cylinder and can communicate with the driving cylinder. The reversing piston can reciprocate in the reversing chamber by the driving gas, and the driving gas can drive the driving piston to move from two opposite directions.

[0015] Specifically, the pneumatic booster pump further includes a first drive line and a second drive line, both of which are used to contain the drive gas; the drive cylinder includes a first drive chamber and a second drive chamber; the reversing piston can switch between a first position and a second position; when the reversing piston is in the first position, the first drive line is connected to the first drive chamber to introduce the drive gas into the first drive chamber, and the drive gas drives the drive piston to move along a first direction; when the reversing piston is in the second position, the second drive line is connected to the second drive chamber to introduce the drive gas into the second drive chamber, and the drive gas drives the drive piston to move along a second direction; both the first direction and the second direction extend along the axial direction of the drive cylinder, and the first direction is opposite to the second direction.

[0016] Specifically, the drive assembly further includes a first control valve stem and a second control valve stem; the reversing chamber includes a first control air chamber, a second control air chamber, a first exhaust passage, and a second exhaust passage, the second control air chamber being opposite to the reversing piston, the first exhaust passage being connected to the second control air chamber, and the second exhaust passage being connected to either the first drive air chamber or the second drive air chamber; both the first control valve stem and the second control valve stem are mounted on the drive cylinder, and both the first control valve stem and the second control valve stem are connected to the drive cylinder; when the drive piston moves along the first direction, the second drive air chamber is connected to the second exhaust passage, and the drive piston can push the first control valve stem to connect the first control air chamber to the second control air chamber, thereby causing the drive gas to flow from the first control air chamber to the second control air chamber, and driving the reversing piston to switch from the first position to the second position; when the drive piston moves along the second direction, the first drive air chamber is connected to the second exhaust passage, and the second control air chamber is connected to the first exhaust passage to discharge the drive gas, and the drive piston can push the second control valve stem to switch the drive piston from the second position to the first position.

[0017] Specifically, the pneumatic booster pump further includes a connecting pipeline, wherein the first cooling pipeline and the second cooling pipeline are connected and communicate with each other through the connecting pipeline, and the second cooling pipeline is communicated with the second exhaust channel. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 An assembly schematic diagram of the pneumatic booster pump provided in an embodiment of this application;

[0020] Figure 2 Another viewpoint of the assembly schematic diagram of the pneumatic booster pump provided in the embodiment of this application;

[0021] Figure 3 A side view of the pneumatic booster pump provided in an embodiment of this application;

[0022] Figure 4 for Figure 3 AA section view;

[0023] Figure 5 for Figure 3 BB cross-sectional view;

[0024] Figure 6 for Figure 3 CC section view;

[0025] Figure 7 for Figure 4 DD sectional view;

[0026] Figure 8 for Figure 5 EE sectional view;

[0027] Figure 9 for Figure 5 The FF cross-sectional view shows the state of each component of the reversing assembly when the reversing piston is in the second position;

[0028] Figure 10 This is a schematic diagram of the reversing assembly when the reversing piston of the pneumatic booster pump provided in the embodiment of this application is in the first position.

[0029] The attached figures are labeled as follows:

[0030] 100-Pneumatic booster pump, 111-Piston rod, 112-First stage booster cylinder, 1121-First stage booster end cap, 1121A-Inlet passage, 1122-First stage inlet check valve, 1123-First stage outlet check valve, 1124-First connecting tee, 1125-First stage booster pipeline, 113-First stage booster piston, 114-Second stage booster cylinder, 1141-Second stage booster end cap, 1141A-Outlet, 1142-Inlet check valve, 1143-Outlet check valve, 1144-Second stage booster pipeline, 1145-Second connecting tee, 120-Drive assembly, 121-Drive cylinder, 122-Drive piston, 123-First end cap, 124-Second end cap, 125-Intermediate end cap, 126-First stage booster cylinder ...Drive cylinder, 121-Drive cylinder, 122-Drive piston, 123-First end cap, 124-Second end cap, 125-Intermediate end cap, 126-Drive cylinder, 121-Drive cylinder, 122-Drive cylinder 1261-First valve body, 1262-First valve stem, 1263-First reset component, 127-Second control valve stem, 131-First cooling pipe, 132-First cooling cylinder, 1321-First cooling chamber, 133-Second cooling pipe, 134-Second cooling cylinder, 1341-Second cooling chamber, 140-Muffler, 150-Reversing assembly, 151-Reversing chamber, 1511-First control air chamber, 1512-Second control air chamber, 1513-First exhaust passage, 1514-Second exhaust passage, 1515-Muffler structure, 152-Reversing piston, 153-Inlet, 154-Control air pipe, 160-First drive pipe, 170-Second drive pipe, 180-Connecting pipe. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0032] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc. (if present), indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the embodiments of this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. Furthermore, the terms "first," "second," and "third" are used only for descriptive purposes such as distinguishing similar objects, and should not be construed as indicating or implying relative importance or order.

[0033] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0034] Please see Figures 1-3 as well as Figure 5 The pneumatic booster pump 100 provided in this application includes a booster assembly, a drive assembly 120, and a cooling assembly. The booster assembly is used to boost the pressure of the fluid to be boosted. The output end of the drive assembly 120 is connected to the booster end of the booster assembly. The inlet end of the drive assembly 120 is connected to a drive gas. The output end of the drive assembly 120 can be reciprocated by the drive gas to drive the booster end of the booster assembly to reciprocate, thereby boosting the pressure of the fluid to be boosted. The cooling assembly includes a first cooling pipe 131 and a first cooling cylinder 132. The first cooling cylinder 132 is disposed on the outer peripheral surface of the booster end of the booster assembly. The first cooling cylinder 132 includes a first cooling chamber 1321. The first cooling pipe 131 is connected to the first cooling chamber 1321. The first cooling pipe 131 is used to introduce cooling gas into the first cooling chamber 1321, and the first cooling pipe 131 can be used for cooling gas circulation.

[0035] Further, please refer to Figures 3-6The pressurization assembly includes a piston rod 111, a first-stage pressurization cylinder 112, and a first-stage pressurization piston 113. The first-stage pressurization cylinder 112 is used to contain the fluid to be pressurized. The piston rod 111 is movably housed within the first-stage pressurization cylinder 112 and is connected to the output end of the drive assembly 120. A first cooling cylinder 132 is sleeved on the outer circumferential surface of the first-stage pressurization cylinder 112. The first-stage pressurization piston 113 is connected to the piston rod 111 and is used to pressurize the fluid to be pressurized and discharge it from the first-stage pressurization cylinder 112. Therefore, the output end of the drive assembly 120 can generate driving force through the driving gas to drive the piston rod 111 to move. The piston rod 111 then moves the first-stage pressurization piston 113, thereby pressurizing the gas to be pressurized in the first-stage pressurization cylinder 112. The first cooling cylinder 132 can cooperate with the first cooling pipe 131 to dissipate heat from the first-stage pressurization cylinder 112.

[0036] Further, please refer to Figure 4 To further improve the boosting efficiency, the boosting assembly also includes a secondary boosting cylinder 114 and a secondary boosting piston 115. The secondary boosting cylinder 114 is connected to the primary boosting cylinder 112, and the cross-sectional area of ​​the secondary boosting cylinder 114 is smaller than that of the primary boosting cylinder 112. Therefore, after the gas to be boosted enters the secondary boosting cylinder 114 from the primary boosting cylinder 112, the secondary boosting piston 115 can apply greater pressure to the gas to be boosted, thereby improving the boosting effect and boosting efficiency. The piston rod 111 extends into the secondary boosting cylinder 114, and the secondary boosting piston 115 is also connected to the piston rod 111. The secondary boosting piston 115 is used to boost the fluid to be boosted and discharge the boosted fluid from the secondary boosting cylinder 114. Specifically, the secondary booster cylinder 114 is coaxial with the primary booster cylinder 112, the axis of the piston rod 111 coincides with the axis of the primary booster cylinder 112, and the volume of the secondary booster cylinder 112 is smaller than that of the primary booster cylinder 114, thereby further improving the boosting efficiency.

[0037] Further, please refer to Figure 4 The cooling assembly also includes a second cooling pipe 133 and a second cooling cylinder 134. The second cooling cylinder 134 is sleeved on the outer peripheral surface of the second-stage booster cylinder 114 and includes a second cooling chamber 1341. One end of the second cooling pipe 133 is connected to the outlet of the first cooling chamber 1321, and the other end of the second cooling pipe 133 is connected to the second cooling chamber 1341. The driving gas after performing work on the output end of the drive assembly 120 can be discharged from the second cooling chamber 1341. In this way, the second cooling pipe 133 and the second cooling cylinder 134 can dissipate heat from the second-stage booster cylinder 114, thereby avoiding the reduction of boosting efficiency and the shortening of component life due to overheating of the second-stage booster cylinder 114.

[0038] Further, please refer to Figures 1-2 as well as Figure 4 The pneumatic booster pump 100 also includes a muffler 140, which is disposed on the outer peripheral surface of the first-stage booster cylinder 112 and is connected to the outlet end of the first cooling chamber 1321. This arrangement can stabilize the pressure gradient at the exhaust of the first-stage booster cylinder 112, prevent the movement rhythm of the first-stage booster piston 113 from being affected by airflow backflow, and thus ensure the stability of boosting efficiency and output pressure.

[0039] Further, please refer to Figures 3-6 The drive assembly 120 includes a drive cylinder 121 and a drive piston 122. The drive cylinder 121 is used to contain drive gas. A piston rod 111 extends into the drive cylinder 121, and the drive piston 122 is connected to the piston rod 111. The drive gas is used to drive the drive piston 122 to move within the drive cylinder 121. Specifically, the two ends of the drive cylinder 121 are respectively provided with a first end cap 123 and a second end cap 124. A first-stage booster cylinder 112 is sealed and connected to the drive cylinder 121 through the first end cap 123, and a second-stage booster cylinder 114 is sealed and connected to the drive cylinder 121 through the second end cap 124.

[0040] Further, please refer to Figures 1-6 In some embodiments of this application, the drive assembly 120 includes two drive cylinders 121, with an intermediate end cap 125 between them to provide a sealed connection and communication between the two drive cylinders 121. Each drive cylinder 121 contains a drive piston 122, and the piston rod 111 passes through the intermediate end cap 125 in a sealed manner. This arrangement enhances the driving force for driving the booster end of the booster assembly, thereby improving booster efficiency.

[0041] Further, please refer to Figures 1-2 as well as Figure 9The pneumatic booster pump 100 also includes a reversing assembly 150, which includes a reversing chamber 151, a reversing piston 152, an air inlet 153, and a control air pipe 154. The reversing chamber 151 is used to introduce driving gas and is disposed on the driving cylinder 121. The reversing chamber 151 can communicate with the driving cylinder 121. The reversing piston 152 can reciprocate within the reversing chamber 151 by means of driving gas, and the driving gas can drive the driving piston 122 to move from two opposite directions. The air inlet 153 is disposed on the reversing chamber 151 and is used to connect an external driving gas, such as compressed air. The control air pipe 154 is connected to the reversing chamber 151. After the driving gas enters from the air inlet 153, a small part of the driving gas flows into the reversing chamber 151 through the control air pipe 154 to drive the reversing piston 152 to move, while most of the driving gas flows into the driving cylinder 121 to drive the driving piston 122 to move.

[0042] Further, please refer to Figures 4-7 The pneumatic booster pump 100 also includes a first drive line 160 and a second drive line 170, both of which are used to contain driving gas; the drive cylinder 121 includes a first drive chamber 1211 and a second drive chamber 1212; the reversing piston 152 can switch between a first position and a second position; when the reversing piston 152 is in the first position, the first drive line 160 is connected to the first drive chamber 1211, and the driving gas drives the drive piston 122 along a first direction (e.g., Figure 7 The piston 122 moves in the X direction (as shown in the image); when the reversing piston 152 is in the second position, the second drive pipe 170 is connected to the second drive air chamber 1212, and the drive gas drives the drive piston 122 to move in the second direction (as shown in the image). Figure 7 The cylinder moves in the Y direction; both the first and second directions extend along the axis of the drive cylinder 121, and the first and second directions are opposite to each other.

[0043] Further, please refer to Figure 6The drive assembly 120 also includes a first control valve stem 126 and a second control valve stem 127. The first control valve stem 126 is disposed on the first end cover 123, and the second control valve stem 127 is disposed on the second end cover 124. The reversing chamber 151 includes a first control air chamber 1511, a second control air chamber 1512, a first exhaust passage 1513, and a second exhaust passage 1514. The second control air chamber 1512 is opposite to the reversing piston 152. The first exhaust passage 1513 can be connected to the second control air chamber 1512 through a control air pipe 154. The outlet end of the first exhaust passage 1513 is also provided with a silencer structure 1515 to ensure smooth exhaust. The second exhaust passage 1514 can be connected to either the first drive air chamber 1211 or the second drive air chamber 1212. Both the first control valve stem 126 and the second control valve stem 127 are disposed on the drive cylinder 121, and both the first control valve stem 126 and the second control valve stem 127 can be... The first control chamber 121 is connected to the drive cylinder 121. When the drive piston 122 moves in the first direction, the second drive chamber 1212 is connected to the second exhaust passage 1514. The drive piston 122 can push the first control valve rod 126 to connect the first control chamber 1511 to the second control chamber 1512, so that the drive gas flows from the first control chamber 1511 to the second control chamber 1512, and drives the reversing piston 152 to switch from the first position to the second position. When the drive piston 122 moves in the second direction, the first drive chamber 1211 is connected to the second exhaust passage 1514, and the second control chamber 1512 is connected to the first exhaust passage 1513 to discharge the drive gas. The drive piston 122 can push the second control valve rod 127 to connect the second control chamber 1512 to the exhaust passage 1513, so that the drive gas is discharged from the second control chamber 1512, and the drive piston 122 switches from the second position to the first position.

[0044] Specifically, the cross-section of the second control chamber 1512 is smaller than the driving surface of the reversing piston 152. Therefore, when the driving piston 122 pushes the first control valve stem 126 to allow the driving gas to enter the second control chamber 1512 from the first control chamber 1511, the driving gas will push the reversing piston 152 to move away from the second control chamber 1512, and eventually cause the reversing piston 152 to reach the second position. Similarly, when the drive piston 122 pushes the second control valve rod 127, the second control air chamber 1512 is connected to the exhaust passage 1513 through the control air pipe 154. The drive gas in the second control air chamber 1512 will be discharged to the external environment through the exhaust passage 1513. Eventually, the second control air chamber 1512 will return to the normal pressure environment, while the reversing chamber 151 will be continuously supplied with drive gas. When the second control air chamber 1512 is at normal pressure, the pressure on the side of the reversing piston 152 away from the second control air chamber 1512 will be greater. The drive gas will drive the reversing piston 152 to approach the second control air chamber 1512 and eventually make the reversing piston 152 return from the second position to the first position.

[0045] Further, please refer to Figure 6 The first control valve stem 126 includes a first valve body 1261, a first valve stem 1262, and a first reset member 1263. When the drive piston 122 pushes the first valve stem 1262, the first valve stem 1262 retracts into the first valve body 1261 by a certain length, and compresses the first reset member 1263, thereby connecting the first control air chamber 1511 and the second control air chamber 1512. When the drive piston 122 moves away from the first valve stem 1262, the first reset member 1263 gradually stretches, the first valve stem 1262 gradually extends out of the first valve body 1261 by a certain length and finally resets, disconnecting the connection between the first control air chamber 1511 and the second control air chamber 1512. In this embodiment, the first reset member 1263 is a reset spring. The structure of the second control valve stem 127 is the same as that of the first control valve stem 127, and will not be described in detail here.

[0046] Further, please refer to Figure 7The pneumatic booster pump 100 also includes a connecting pipe 180. The first cooling pipe 131 and the second cooling pipe 133 are connected and communicated via the connecting pipe 180. The second cooling pipe 131 is connected to the second exhaust passage 1514 so that the driving gas after performing work can enter the first cooling pipe 131 through the second exhaust passage 1514. Specifically, the pressure and temperature of the driving gas decrease after performing work, so the driving gas that should be discharged as exhaust gas can be used as cooling gas in the first cooling pipe 131. The driving gas after performing work flows sequentially through the second exhaust passage 1514, the second cooling pipe 133, the second cooling chamber 1341, the connecting pipe 180, the first cooling pipe 131, and the first cooling chamber 1321, and is finally discharged from the muffler 140 connected to the first cooling chamber 1321.

[0047] Further, please refer to Figure 7The first-stage booster cylinder 112 is provided with a first-stage booster end cap 1121. The first-stage booster end cap 1121 is provided with an air intake channel 1121A to introduce the gas to be boosted. The first-stage booster end cap 1121 is provided with a first-stage inlet check valve 1122 and a first-stage outlet check valve 1123. One end of the first-stage inlet check valve 1122 is connected to the air intake channel 1121A. The other end of the first-stage inlet check valve 1122 is connected to one end of the first-stage outlet check valve 1123 through a first connecting tee 1124. The third port of the first connecting tee 1124 is sealed and connected to the first-stage booster cylinder 112. The other end of the first-stage outlet check valve 1123 is connected to a first-stage booster pipeline 1125. The first-stage booster pipeline 1125 extends out of the surface of the first-stage booster end cap 1121 and is also connected to a connecting pipeline 180. The secondary booster cylinder 114 is equipped with a secondary booster end cap 1141. The secondary booster end cap 1141 is equipped with an outlet passage 1141A to discharge the boosted gas. The secondary booster end cap 1141 is equipped with a secondary inlet check valve 1142 and a secondary outlet check valve 1143. One end of the secondary inlet check valve 1142 is connected to the connecting pipe 180 through the secondary booster pipeline 1144. The other end of the secondary inlet check valve 1142 is connected to one end of the secondary outlet check valve 1143 through a second connecting tee 1145. The third port of the second connecting tee 1145 is connected to the secondary booster cylinder 114. The other end of the secondary outlet check valve 1143 is connected to the outlet passage 1141A. In this way, the gas to be pressurized first enters the first-stage pressurization cylinder 112 through the intake channel 1121A and the first-stage inlet check valve 1122. The first-stage pressurization piston 113 gradually pressurizes the gas to be pressurized. When the pressure of the gas to be pressurized is sufficient to open the first-stage outlet check valve 1123, the gas to be pressurized flows out from the first-stage outlet check valve 1123 and enters the second-stage pressurization cylinder 114 through the first-stage pressurization pipeline 1125, the connecting pipeline 180 and the second-stage inlet check valve 1142. When the pressure of the gas to be pressurized is sufficient to open the second-stage outlet check valve 1143, the gas to be pressurized flows into the exhaust channel 1141A through the second-stage outlet check valve 1143 and is discharged.

[0048] The following is an introduction to the working principle of the pneumatic booster pump 100 provided in this application.

[0049] During the pressurization operation, the inlet 153 on the reversing chamber 151 needs to be connected to the driving gas, and the gas to be pressurized is introduced into the first-stage pressurization cylinder 112 through the inlet channel 1121A. After the driving gas enters through the inlet 153, a small portion of the driving gas flows into the reversing chamber 151 to drive the reversing piston 152 to move, while most of the driving gas flows into the driving cylinder 121 to drive the driving piston 122 to move in the first direction. Initially, the reversing piston 152 is in the second position, and the second control chamber 1512 is at normal pressure. After the driving gas is introduced, the pressure on the side of the reversing piston 152 away from the second control chamber 1512 is greater, and the reversing piston 152 gradually moves closer to the second control chamber 1512. The reversing piston 152 switches from the second position to the first position, and the first drive pipe 160 is connected to the first drive chamber 1211. The driving gas drives the drive piston 122, along with the piston rod 113, to move in the first direction. The first-stage booster piston 113 also moves in the first direction, and the pressure in the first-stage booster cylinder 112 increases. As the pressure of the gas to be pressurized increases, when it is sufficient to open the first-stage outlet check valve 1123, the gas flows out from the first-stage outlet check valve 1123 and enters the second-stage pressurization cylinder 114 via the first-stage pressurization pipeline 1125, the connecting pipeline 180, and the second-stage inlet check valve 1142. During this process, the drive piston 122 gradually approaches the first control valve rod 126 provided on the first end cover 123. When the drive piston 122 pushes the first control valve rod 126, the first control valve rod 126 connects the first control chamber 1511 with the second control chamber 1512, and the drive gas gradually fills the cylinder. When the second control chamber 1512 is full, the reversing piston 152 gradually moves away from the second control chamber 1512 and eventually switches to the second position. When the reversing piston 152 is in the second position, the second drive line 170 is connected to the second drive chamber 1212, and the drive gas drives the drive piston 122 to move in the second direction. The second-stage booster piston 115 also moves in the second direction and begins to pressurize the second-stage booster cylinder 114. When the pressure of the gas to be boosted is sufficient to open the second-stage outlet check valve 1143, the gas to be boosted flows into the outlet passage 1141A through the second-stage outlet check valve 1143 and is discharged. The pressurization of the gas to be pressurized is then completed. After the work is done, the driving gas flows sequentially through the second exhaust channel 1514, the second cooling pipe 133, the second cooling chamber 1341, the connecting pipe 180, the first cooling pipe 131, and the first cooling chamber 1321, and is finally discharged from the muffler 140 connected to the first cooling chamber 1321. During this process, the temperature of the driving gas that has done work on the driving piston 122 is low, so it will cool the first cooling chamber 1321, the second cooling chamber 1341, the first cooling pipe 133, the second cooling pipe 135, and the connecting pipe 180.After the pressurization process is completed, the drive piston 122 pushes the second control valve rod 127 to connect the second control chamber 1512 with the first exhaust passage 1513. The drive gas in the second control chamber 1512 is discharged to the external environment through the first exhaust passage 1513. The pressure in the second control chamber 1512 gradually becomes atmospheric pressure. Under the action of the drive gas, the reversing piston 152 begins to gradually approach the second control chamber 1512. The reversing piston 152 gradually switches from the second position to the first position. The first drive pipe 160 is connected to the first drive chamber 1211. The drive gas once again drives the drive piston 122 to move along the first direction with the piston rod 113, thereby repeating the aforementioned pressurization process.

[0050] Compared with the prior art, the pneumatic booster pump 100 provided in this application initially cools the booster end of the booster assembly by placing a first cooling cylinder 132 on the outer peripheral surface of the booster assembly, through heat exchange between the outer peripheral surface of the first cooling cylinder 132 and the air. Furthermore, by connecting a first cooling pipe 131 to the first cooling chamber 1321 of the first cooling cylinder 132 and introducing cooling gas into the first cooling pipe 131, the booster end of the booster assembly is further efficiently cooled through heat exchange between the inner peripheral surface of the first cooling cylinder 132 and the cooling gas. Therefore, the pneumatic booster pump 100 provided in this application can efficiently cool the booster end of the booster assembly by providing a cooling component on the booster assembly, thereby keeping the operating temperature of the booster end within a suitable range. This extends the service life of the booster end of the booster assembly while allowing the booster end to fully utilize its boosting performance, thus effectively improving boosting efficiency.

[0051] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A pneumatic booster pump, characterized in that, include: A pressurization assembly for pressurizing a fluid to be pressurized; A drive assembly, the output end of which is connected to the boosting end of the boosting assembly, the inlet end of which is connected to a drive gas, and the output end of which can be reciprocated by the drive gas to drive the boosting end of the boosting assembly to reciprocate, thereby boosting the fluid to be boosted. A cooling assembly includes a first cooling pipe and a first cooling cylinder. The first cooling cylinder is disposed on the outer peripheral surface of the pressurizing end of the pressurizing assembly. The first cooling cylinder includes a first cooling chamber. The first cooling pipe is connected to the first cooling chamber. The first cooling pipe is used to introduce cooling gas into the first cooling chamber, and the first cooling pipe can be used for the circulation of the cooling gas.

2. The pneumatic booster pump according to claim 1, characterized in that, The pressurization assembly includes a piston rod, a first-stage pressurization cylinder, and a first-stage pressurization piston. The piston rod is movably housed within the first-stage pressurization cylinder and is connected to the output end of the drive assembly. The first-stage pressurization cylinder is used to contain the fluid to be pressurized. A first cooling cylinder is sleeved on the outer circumferential surface of the first-stage pressurization cylinder. The first-stage pressurization piston is connected to the piston rod and is used to pressurize the fluid to be pressurized and discharge the pressurized fluid from the first-stage pressurization cylinder.

3. The pneumatic booster pump according to claim 2, characterized in that, The pressurization assembly further includes a secondary pressurization cylinder and a secondary pressurization piston. The secondary pressurization cylinder is connected to the primary pressurization cylinder, and the cross-sectional area of ​​the secondary pressurization cylinder is smaller than that of the primary pressurization cylinder. The piston rod extends into the secondary pressurization cylinder, and the secondary pressurization piston is also connected to the piston rod. The secondary pressurization piston is used to pressurize the fluid to be pressurized and discharge the pressurized fluid from the secondary pressurization cylinder.

4. The pneumatic booster pump according to claim 3, characterized in that, The cooling assembly further includes a second cooling pipe and a second cooling cylinder. The second cooling cylinder is sleeved on the outer peripheral surface of the secondary booster cylinder. The second cooling cylinder includes a second cooling chamber. One end of the second cooling pipe is connected to the outlet end of the first cooling chamber, and the other end of the second cooling pipe is connected to the second cooling chamber. The driving gas after completing the work can be discharged from the second cooling chamber.

5. The pneumatic booster pump according to claim 2, characterized in that, The pneumatic booster pump also includes a muffler, which is disposed on the outer peripheral surface of the first-stage booster cylinder and is connected to the air outlet of the first cooling chamber.

6. The pneumatic booster pump according to claim 4, characterized in that, The drive assembly includes a drive cylinder and a drive piston. The drive cylinder is used to contain the drive gas. The piston rod extends into the drive cylinder. The drive piston is connected to the piston rod. The drive gas is used to drive the drive piston to move within the drive cylinder.

7. The pneumatic booster pump according to claim 6, characterized in that, The pneumatic booster pump also includes a reversing assembly, which includes a reversing chamber and a reversing piston. The reversing chamber is used to introduce the driving gas. The reversing chamber is disposed on the driving cylinder and can communicate with the driving cylinder. The reversing piston can reciprocate in the reversing chamber by the driving gas, and the driving gas can drive the driving piston to move from two opposite directions.

8. The pneumatic booster pump according to claim 7, characterized in that, The pneumatic booster pump further includes a first drive line and a second drive line, both of which are used to contain the drive gas; the drive cylinder includes a first drive chamber and a second drive chamber; the reversing piston can switch between a first position and a second position; when the reversing piston is in the first position, the first drive line is connected to the first drive chamber to introduce the drive gas into the first drive chamber, and the drive gas drives the drive piston to move in a first direction; when the reversing piston is in the second position, the second drive line is connected to the second drive chamber to introduce the drive gas into the second drive chamber, and the drive gas drives the drive piston to move in a second direction; both the first direction and the second direction extend along the axial direction of the drive cylinder, and the first direction is opposite to the second direction.

9. The pneumatic booster pump according to claim 8, characterized in that, The drive assembly further includes a first control valve stem and a second control valve stem; the reversing chamber includes a first control air chamber, a second control air chamber, a first exhaust passage, and a second exhaust passage, the second control air chamber being opposite to the reversing piston, the first exhaust passage being in communication with the second control air chamber, and the second exhaust passage being in communication with either the first drive air chamber or the second drive air chamber; both the first control valve stem and the second control valve stem are mounted on the drive cylinder, and both the first control valve stem and the second control valve stem are in communication with the drive cylinder; when the drive piston moves along the first direction, the second drive air chamber is in communication with the second exhaust passage, and the drive piston can push the first control valve stem to connect the first control air chamber with the second control air chamber, thereby causing the drive gas to flow from the first control air chamber to the second control air chamber, and driving the reversing piston to switch from the first position to the second position; when the drive piston moves along the second direction, the first drive air chamber is in communication with the second exhaust passage, and the second control air chamber is in communication with the first exhaust passage to discharge the drive gas, and the drive piston can push the second control valve stem to switch the drive piston from the second position to the first position.

10. The pneumatic booster pump according to claim 9, characterized in that, The pneumatic booster pump also includes a connecting pipeline, wherein the first cooling pipeline and the second cooling pipeline are connected and communicate with each other via the connecting pipeline, and the second cooling pipeline is communicated with the second exhaust channel.

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