Gas pressurization driving pump

Abstract

The utility model provides a gas pressurization driving pump which comprises a shell and a driving shaft, one end of the driving shaft is connected with a motor, the other end of the driving shaft is installed inside the shell through a first bearing and a second bearing, the shell is provided with a flow channel, a sealing cover, a blank cap and an end cover, and the end cover is provided with an oil inlet and an oil outlet. The driving shaft is connected with a third bearing, the third bearing is connected with a plunger through a connecting rod, a volume change cavity is formed between the plunger and the blank cap, and the volume change cavity is connected to the oil inlet and outlet through a flow channel; a plurality of volume change cavities are formed in the shell and are distributed at equal angles by taking the driving shaft as a central shaft, each volume change cavity corresponds to one blank cap, one connecting rod and one plunger respectively, and the number of the oil inlets and outlets in the end cover is consistent with that of the volume change cavities. According to the utility model, a plurality of gas compression driving sources are provided for a gas pressurization system through the oil inlet and the oil outlet in the connecting end cover, so that the requirements of multi-stage gas compression and compact structure are met.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a gas boost drive pump. Background Art

[0002] An ion compressor is a special type of positive displacement compressor. It primarily consists of a gas compression section, a hydraulic drive section, and a variable-diameter piston for transmission. Its operating principle is that in the hydraulic drive section, a reciprocating pump with a volume-changing chamber drives hydraulic oil into and out of the lower portion of a combined cylinder, which in turn drives the variable-diameter piston within the combined cylinder to reciprocate. Above the variable-diameter piston is the gas compression section, where intake and exhaust valves work together to complete the intake, compression, exhaust, and expansion processes. Ion compressors offer advantages such as excellent sealing performance, high volumetric efficiency, and large exhaust volume.

[0003] Current hydraulic pump designs primarily focus on providing stable unidirectional flow, using, for example, multi-cylinder reciprocating mechanisms and oil distribution plates to control flow direction and improve flow stability. However, these pumps cannot meet the requirements of multi-stage gas compression and are complex and bulky. The drive pump for an ion compressor requires multiple bidirectional drive sources, a requirement rarely encountered in previous designs. Utility Model Content

[0004] In order to solve the problems of the prior art, the utility model provides a gas boost drive pump, which provides multiple gas compression drive sources for the gas boost system by connecting the oil inlet and outlet ports on the end cover, thereby meeting the requirements of multi-stage gas compression and compact structure.

[0005] The utility model includes a shell and a drive shaft, one end of the drive shaft is connected to the motor, and the other end is installed inside the shell through a first bearing and a second bearing. The shell is provided with a flow channel, and is equipped with a cover, a blind cover, and an end cover, and the end cover is provided with an oil inlet and outlet; the drive shaft is connected to a third bearing, and the third bearing is connected to a plunger through a connecting rod, and a volume change chamber is formed between the plunger and the blind cover, and the volume change chamber is connected to the oil inlet and outlet through the flow channel; there are multiple volume change chambers in the shell, and the volume change chambers are distributed at equal angles with the drive shaft as the central axis, and each volume change chamber corresponds to a blind cover, a connecting rod and a plunger, and the number of oil inlet and outlet ports on the end cover is consistent with that of the volume change chamber.

[0006] As a further improvement, the number of the volume change chambers is 5.

[0007] As a further improvement, the multiple oil inlet and outlet ports on the end cover are not connected to each other and serve as independent driving sources respectively.

[0008] As a further improvement, among the five oil inlet and outlet ports on the end cover, two adjacent ones are connected as two driving sources, and the remaining one is used as an independent driving source.

[0009] Further improvement, among the five oil inlet and outlet ports on the end cover,

[0010] As a further improvement, among the five oil inlet and outlet ports on the end cover, three adjacent ones are connected as a group, and the other two are connected as a group, and each group serves as a driving source.

[0011] As a further improvement, the drive shaft and the drive motor are connected by a spline or a flat key.

[0012] As a further improvement, the middle of the drive shaft is an eccentric circle structure or a cam structure.

[0013] The beneficial effects of the utility model are:

[0014] 1. The gas boost drive pump is equipped with multiple volume change chambers, each of which can serve as a gas compression drive source to drive the reciprocating motion of pistons at different compression stages.

[0015] 2. Since there is a phase difference between the volume change cavities during operation, the maximum instantaneous load torque can be reduced, the speed fluctuation can be reduced, and the movement smoothness can be improved.

[0016] 3. The device only needs to be equipped with one set of motors to obtain multiple drive sources, reducing the space required for the equipment.

[0017] 4. When the system needs to work with fewer compression stages, such as two-stage compression, two or more oil inlets and outlets can be connected as a group to form a driving source.

[0018] 5. Without changing the overall structure of the machine, the volume change of a single driving source is effectively increased, making the structure more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is an appearance diagram of the gas boost drive pump in an embodiment of the present utility model.

[0021] Figure 2 It is a top view of the gas boost drive pump in the embodiment of the present utility model.

[0022] Figure 3 yes Figure 2 Middle AA section view.

[0023] Figure 4 This is a flow channel connection diagram of the end cover of the gas boost drive pump in the embodiment of the present utility model.

[0024] Reference numerals:

[0025] Housing 1, drive shaft 2, flow channel 3, plunger 4, first bearing 5, second bearing 6, third bearing 7, end cover 8, connecting rod 9, sealing cover 10, blind cover 11, oil inlet and outlet 12, volume change chamber 13. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] A specific implementation of the utility model is as follows Figure 1-3 As shown, the gas boost drive pump is a volumetric pump, employing a configuration in which multiple cylinders are radially arranged around a drive shaft. The overall structure comprises a housing 1 and a drive shaft 2. One end of the drive shaft 2 is connected to the motor, and the other end is mounted within the housing 1 via a bearing. The housing 1 is provided with a flow channel 3, and is also equipped with a cover 10, a blind cover 11, and an end cap 8. The end cap 8 is provided with an oil inlet and outlet 12. The drive shaft 2 is connected to a third bearing 7, which is connected to a plunger 4 via a connecting rod 9. A volumetric chamber 13 is formed between the plunger 4 and the blind cover 11, and is connected to the oil inlet and outlet 12 via the flow channel 3. The housing 1 has multiple volumetric chambers 13, distributed at equal angles around the drive shaft 2. Each volumetric chamber 13 corresponds to a blind cover 11, a connecting rod 9, and a plunger 4. The number of oil inlet and outlet ports 12 on the end cap 8 matches the number of volumetric chambers 13.

[0028] In this embodiment, five volume change chambers 13 are used. Each volume change chamber corresponds to a cover 11, a connecting rod 9, and a plunger 4. The multiple volume change chambers 13 are designed with equal angles around the drive shaft 2 as the central axis. The five oil inlet and outlet ports 12 can adopt different oil distribution connection methods, including but not limited to the following three solutions:

[0029] In solution 1, the five oil inlet and outlet ports 12 are not connected to each other and serve as five driving sources respectively.

[0030] Solution 2: Two groups of adjacent oil inlet and outlet ports 12 are connected, and each group serves as a driving source.

[0031] Solution 3: one group is connected by three oil inlet and outlet ports 12, and the other group is connected by two oil inlet and outlet ports 12, and each group serves as a driving source.

[0032] like Figure 3 As shown, when the gas boost drive pump is operating, the drive shaft 2 is driven by a motor and can be connected using a spline or key. The center of the drive shaft 2 is an eccentric circle or cam structure, and the outer side of the eccentric circle is a third bearing 7, which drives the reciprocating motion of each connecting rod 9 when the drive shaft 2 rotates. The first bearing 5 and the second bearing 6 function to fix the position of the drive shaft 2 and enable its free rotation. A volume change chamber 13 is formed between the plunger 4 and the cover 11. The volume change chamber 13 is filled with hydraulic oil, which flows in and out of the oil inlet and outlet 12 through the flow channel 3.

[0033] When the eccentric circle or cam on the drive shaft 2 pushes the connecting rod 9 to its closest position to the drive shaft 2, the volume of the volume changing chamber 13 is at its maximum. As the drive shaft 2 rotates, when the eccentric circle or cam on the drive shaft 2 pushes the connecting rod to its farthest position from the drive shaft 2, the volume of the volume changing chamber 13 reaches its minimum. This process constitutes one operating cycle. Driven by the motor, the volume of the volume changing chamber 13 can be changed at a high frequency, and the rate of change is controlled by the motor speed.

[0034] like Figure 4 As shown, the multiple oil inlet and outlet ports 12 can adopt different connection methods to adapt to the requirements of different compression stages or volume changes, and the connection methods include but are not limited to hose connection methods and end cover 8 processing methods.

[0035] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device embodiment, the above is only a preferred implementation method of the present invention. Since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment. The above is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with this technical field is within the technical scope disclosed by this utility model. For ordinary technicians in this technical field, changes or replacements that can be easily thought of should be included in the protection scope of this utility model without departing from the principle of this utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims

1. A gas boost drive pump, comprising a housing (1) and a drive shaft (2), wherein one end of the drive shaft (2) is connected to a motor and the other end is mounted inside the housing (1) via a bearing, characterized in that: The housing (1) is provided with a flow channel (3), and is also equipped with a sealing cover (10), a blind cover (11), and an end cover (8), and the end cover (8) is provided with an oil inlet and outlet (12); the drive shaft (2) is connected to a third bearing (7), and the third bearing (7) is connected to a plunger (4) via a connecting rod (9), and a volume change chamber (13) is formed between the plunger (4) and the blind cover (11), and the volume change chamber (13) is connected to the oil inlet and outlet (12) via the flow channel (3); the housing (1) has a plurality of volume change chambers (13), and the volume change chambers (13) are distributed at equal angles with the drive shaft (2) as the central axis, and each volume change chamber (13) corresponds to a blind cover (11), a connecting rod (9), and a plunger (4), respectively. The number of the oil inlet and outlet (12) on the end cover (8) is the same as that of the volume change chambers (13).

2. The gas booster driven pump according to claim 1, characterized in that: The number of the volume change chambers (13) is 5.

3. The gas booster driven pump according to claim 1 or 2, characterized in that: The multiple oil inlet and outlet ports (12) on the end cover (8) are not connected to each other and serve as independent driving sources.

4. The gas booster driven pump according to claim 2, characterized in that: Of the five oil inlet and outlet ports (12) on the end cover (8), two adjacent ones are connected as two driving sources, and the remaining one is used as an independent driving source.

5. The gas booster driven pump according to claim 2, characterized in that: Of the five oil inlet and outlet ports (12) on the end cover (8), three adjacent ones are connected as a group, and the other two are connected as a group, and each group serves as a driving source.

6. The gas booster driven pump according to claim 1, characterized in that: The drive shaft (2) and the drive motor are connected in a spline manner.

7. The gas booster driven pump according to claim 1, characterized in that: The drive shaft (2) is connected to the drive motor using a flat key.

8. The gas booster driven pump according to claim 1, characterized in that: The middle of the driving shaft (2) is an eccentric circle structure.

9. The gas booster driven pump according to claim 1, characterized in that: The middle of the driving shaft (2) is a cam structure.

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