Oil pump integrated screw air compressor

Abstract

The embodiment of the utility model belongs to the technical field of screw air compressors. The utility model further relates to an oil pump integrated screw air compressor which comprises a screw air compressor structure, the screw air compressor structure comprises a screw male rotor and a screw female rotor, the screw male rotor is used for being connected with a driving piece, and the screw female rotor is connected with an oil pump body. The oil pump body is driven by the screw female rotor to operate so as to pressurize lubricating oil. The oil pump main body is connected with the screw female rotor, so that the screw female rotor can drive the oil pump main body to work in the operation process, lubricating oil from the oil gas barrel to a main machine is pressurized, it is guaranteed that the lubricating oil has enough oil pressure when entering the air compressor, the insufficient oil amount is avoided, and the operation safety and stability of the air compressor unit are improved; therefore, the problem that the exhaust temperature is too high under the low-pressure working condition is solved, meanwhile, due to the integrated design of the oil pump, the structure of an oil supply system is simplified, the stability and reliability of the system are improved, and better use experience is brought to a user.

Description

Technical Field

[0001] The utility model relates to the technical field of screw air compressors, and more specifically, to an oil pump integrated screw air compressor. Background Art

[0002] In the modern industrial field, screw air compressors, as an important gas compression equipment, are widely used in various industries, such as machinery manufacturing, chemical industry, textile, food, etc. With the continuous advancement of science and technology and the increasing maturity of the market, the design and technology of screw air compressors are also constantly updated to meet the increasingly diverse needs of users; traditional oil-injected screw air compressors are usually designed with the exhaust pressure set at a higher level, such as 0.8MPa, to ensure its stability and efficiency in most industrial applications. However, with the development of industrial technology and changes in market demand, more and more application scenarios require air compressors under low-pressure conditions, such as 0.4MPa, 0.3MPa, 0.2MPa, etc. These application requirements under low-pressure conditions have brought new challenges to the design and technology of air compressors;

[0003] At present, when the exhaust pressure of the screw air compressor is lower than 0.4MPa, the exhaust temperature is often too high, causing the screw air compressor to shut down. Combined with the actual exhaust pressure corresponding to the oil supply, it is finally judged that the oil supply is insufficient. The insufficient oil supply not only affects the normal operation of the air compressor, but also has a serious impact on production efficiency and equipment safety. Therefore, we have made improvements to this and proposed an oil pump integrated screw air compressor.

[0004] For example, a Chinese patent (publication number CN219344973U) discloses an intelligent energy-saving control system for a compressor, and its specification discloses: the existing conventional oil-injected screw compressor has a fixed oil injection amount, and sometimes the exhaust temperature is too high, and sometimes the exhaust temperature is too low, which cannot take into account both high-temperature and low-temperature operating conditions. When the ambient temperature is high, the exhaust temperature of the main engine will also rise accordingly. For example, when the intake temperature is too high in summer, it may affect the exhaust high temperature alarm or shutdown, affecting the normal operation of the compressor. Moreover, when the exhaust temperature is too high, the lubricating oil is prone to serious problems such as carbon deposition and coking, which will also accelerate the aging and deterioration of the lubricating oil and shorten the life of the lubricating oil; when the ambient temperature is low, the exhaust temperature will also decrease accordingly. For example, when the intake temperature is too low in winter, the oil injection amount will solidify and cannot be adjusted, resulting in low exhaust temperature. Moreover, in extreme cases, when the exhaust temperature is lower than the pressure dew point, water will precipitate, emulsify the lubricating oil, and deteriorate the quality of the lubricating oil. Utility Model Content

[0005] The technical problem to be solved by the embodiments of the utility model is that currently when the exhaust pressure of the screw air compressor is lower than 0.4MPa, the exhaust temperature is often too high, causing the screw air compressor to shut down.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A screw air compressor with an integrated oil pump comprises: a screw air compressor structure, wherein the screw air compressor structure comprises a screw male rotor and a screw female rotor, wherein the screw male rotor is used to connect a driving member, and the screw female rotor is connected to an oil pump body, and the oil pump body operates under the drive of the screw female rotor to pressurize the lubricating oil. The present application connects the oil pump body with the screw female rotor, so that during operation, the screw female rotor can drive the oil pump body to work and pressurize the lubricating oil from the oil and gas barrel to the main engine to ensure that there is sufficient oil pressure when the lubricating oil enters the air compressor, avoiding insufficient oil, thereby improving the safety and stability of the operation of such air compressor units, thereby solving the problem of excessive exhaust temperature under low-pressure conditions. At the same time, the integrated oil pump design also simplifies the structure of the oil supply system, improves the stability and reliability of the system, and brings a better user experience to users.

[0008] As an improved manner of the utility model, a cylinder body is connected between the screw male rotor and the screw female rotor via a bearing, and an exhaust seat is installed at one end of the cylinder body away from the oil pump body via bolts.

[0009] As an improved manner of the utility model, a rear end cover plate is installed on the side of the exhaust seat away from the cylinder body through bolts, and the rear end cover plate is used for sealing the exhaust seat.

[0010] As an improvement of the utility model, one end of the screw male rotor away from the exhaust seat is fixedly connected to a connecting shaft, one end of the connecting shaft passes through the cylinder body, and a sealed bearing is provided at the connection between the connecting shaft and the screw male rotor.

[0011] As an improved manner of the utility model, the connecting shaft is used to connect the driving member so that the screw male rotor rotates under the drive of the driving member.

[0012] As an improved manner of the utility model, an intake flange is arranged on the top of the cylinder body, and an exhaust flange communicating with the inner cavity of the cylinder body is arranged on the bottom of the exhaust seat.

[0013] As an improved manner of the utility model, a connecting piece is provided between the screw female rotor and the oil pump body, and the connecting piece is used to realize the transmission of the power of the screw female rotor to the oil pump body.

[0014] As an improvement of the utility model, the connecting piece includes a threaded hole opened at one end of the screw female rotor close to the oil pump body, a threaded rod is threadedly connected to the inner wall of the threaded hole, one end of the threaded rod is fixedly connected to a coupling, and the thread direction of the threaded hole is opposite to the rotation direction of the screw female rotor, which can ensure that the threaded rod and the threaded hole rotate and are tightened without loosening when the screw female rotor rotates.

[0015] As an improved manner of the utility model, a connecting hole is opened inside the coupling, a connecting rod is inserted into the connecting hole, and the connecting rod is connected to the input shaft of the oil pump body.

[0016] As an improved manner of the utility model, a sealed bearing is provided at the connection between the outer surface of the coupling and the cylinder body.

[0017] Compared with the prior art, the embodiments of the present invention mainly have the following beneficial effects:

[0018] In order to solve the problem of excessive exhaust temperature often occurring when the exhaust pressure of the screw air compressor in the prior art is lower than 0.4MPa, causing the screw air compressor to shut down, the present application designs an oil pump integrated screw air compressor. The present application connects the oil pump body with the screw female rotor, so that the screw female rotor can drive the oil pump body to work during operation, and pressurize the lubricating oil from the oil and gas barrel to the main engine to ensure that there is sufficient oil pressure when the lubricating oil enters the air compressor, avoiding insufficient oil, thereby improving the safety and stability of the operation of such air compressor units, thereby solving the problem of excessive exhaust temperature under low-pressure conditions. At the same time, the integrated oil pump design also simplifies the oil supply system structure, improves the stability and reliability of the system, and brings a better user experience to users. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of the oil pump integrated screw air compressor provided in this application;

[0020] Figure 2 A schematic diagram of the structure of the screw male rotor and the screw female rotor of the oil pump integrated screw air compressor provided in this application;

[0021] Figure 3 The oil pump integrated screw air compressor provided in this application Figure 1 Schematic diagram of the structure viewed from above;

[0022] Figure 4 A schematic diagram of the structure of the screw female rotor and the oil pump body of the oil pump integrated screw air compressor provided in this application;

[0023] Figure 5 This is a schematic diagram of the structure of the threaded hole of the oil pump integrated screw air compressor provided in this application.

[0024] Indicated in the figure:

[0025] 1. Screw air compressor structure; 101. Screw male rotor; 102. Screw female rotor; 103. Connecting shaft; 104. Cylinder block; 105. Exhaust seat; 106. Rear cover plate; 107. Inlet flange; 108. Exhaust flange; 2. Oil pump body; 3. Threaded hole; 301. Threaded rod; 302. Coupling; 303. Connecting hole; 304. Connecting rod. DETAILED DESCRIPTION

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention belongs; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Reference to "embodiments" herein means that specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] As recorded in the background technology, at present, when the exhaust pressure of the screw air compressor is lower than 0.4MPa, the exhaust temperature is often too high, causing the screw air compressor to shut down. Combined with the actual exhaust pressure corresponding to the oil supply, it is finally determined that the oil supply is insufficient. The insufficient oil supply not only affects the normal operation of the air compressor, but also has a serious impact on production efficiency and equipment safety.

[0028] In order to solve this technical problem, the utility model provides an oil pump integrated screw air compressor.

[0029] Specifically, please refer to Figure 2 , Figure 4 and Figure 5 , the oil pump integrated screw air compressor specifically includes:

[0030] The screw air compressor structure 1 includes a screw male rotor 101 and a screw female rotor 102. The screw male rotor 101 is used to connect the driving member. The screw female rotor 102 is connected to the oil pump body 2. The oil pump body 2 is driven by the screw female rotor 102 to pressurize the lubricating oil.

[0031] The oil pump integrated screw air compressor provided by the utility model connects the oil pump body 2 with the screw female rotor 102, so that during operation, the screw female rotor 102 can drive the oil pump body 2 to work and pressurize the lubricating oil from the oil and gas barrel to the main engine to ensure that there is sufficient oil pressure when the lubricating oil enters the air compressor, avoiding insufficient oil, improving the safety and stability of the operation of such air compressor units, thereby solving the problem of excessive exhaust temperature under low pressure conditions. At the same time, the integrated oil pump design also simplifies the structure of the oil supply system, improves the stability and reliability of the system, and brings a better user experience to users.

[0032] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] Embodiment 1 of the utility model oil pump integrated screw air compressor

[0036] Please refer to Figure 2 , Figure 4 and Figure 5 The utility model discloses an oil pump integrated screw air compressor comprising: a screw air compressor structure 1, wherein the screw air compressor structure 1 comprises a screw male rotor 101 and a screw female rotor 102, wherein the screw male rotor 101 is used to connect a driving member, and the screw female rotor 102 is connected to an oil pump body 2, wherein the oil pump body 2 is driven by the screw female rotor 102 to pressurize the lubricating oil, and the oil pump body 2 is connected to the screw female rotor 102, so that the screw female rotor 102 can drive the oil pump body 2 to work during operation, and pressurize the lubricating oil from the oil and gas barrel to the main engine, so as to ensure that the lubricating oil has sufficient oil pressure when entering the air compressor, and avoid insufficient oil, thereby improving the safety and stability of the operation of such air compressor units, thereby solving the problem of excessively high exhaust temperature under low-pressure conditions, and at the same time, the integrated design of the oil pump simplifies the structure of the oil supply system, improves the stability and reliability of the system, and brings a better user experience to users;

[0037] Since the oil pump body 2 and the screw female rotor 102 operate synchronously, the oil pressure provided by the oil pump body 2 can match the operating state of the air compressor. When the air compressor load increases, the oil pressure will also increase accordingly to meet the air compressor's demand for lubricating oil; conversely, when the air compressor load decreases, the oil pressure will also decrease to avoid waste.

[0038] Further, such as Figure 1-Figure 3 As shown, a cylinder body 104 is connected between the screw male rotor 101 and the screw female rotor 102 via a bearing, and an exhaust seat 105 is installed on one end of the cylinder body 104 away from the oil pump body 2 via bolts. The exhaust seat 105 is detachable by bolt connection for easy inspection and maintenance.

[0039] Further, such as Figure 1-Figure 3 As shown, a rear end cover plate 106 is installed on a side of the exhaust seat 105 away from the cylinder body 104 by bolts, and the rear end cover plate 106 is used for sealing the exhaust seat 105 .

[0040] Embodiment 2 of the utility model oil pump integrated screw air compressor

[0041] The utility model oil pump integrated screw air compressor further has the following features: Figure 1-Figure 3 As shown, one end of the screw male rotor 101 away from the exhaust seat 105 is fixedly connected to the connecting shaft 103, one end of the connecting shaft 103 passes through the cylinder body 104, and a sealed bearing is provided at the connection between the connecting shaft 103 and the screw male rotor 101. After the connecting shaft 103 is connected to the driving member, the driving member can drive the screw male rotor 101 to rotate through the connecting shaft 103.

[0042] Furthermore, the connecting shaft 103 is used to connect a driving member so that the screw male rotor 101 rotates under the drive of the driving member, and the driving member can be a motor or a diesel engine and other equipment.

[0043] Further, such as Figure 1 and Figure 3 As shown, an intake flange 107 is provided on the top of the cylinder body 104, and an exhaust flange 108 communicating with the inner cavity of the cylinder body 104 is provided on the bottom of the exhaust seat 105. The intake flange 107 is used to connect to the intake pipe to achieve air intake, and the exhaust flange 108 is used to connect to the exhaust pipe.

[0044] Embodiment 3 of the utility model oil pump integrated screw air compressor

[0045] The utility model oil pump integrated screw air compressor further has the following features: Figure 4-Figure 5 As shown, a connecting piece is provided between the screw female rotor 102 and the oil pump body 2, and the connecting piece is used to realize the transmission of the power of the screw female rotor 102 to the oil pump body 2, that is, when the screw female rotor 102 rotates, it can drive the oil pump body 2 to operate through the connecting piece.

[0046] Further, such as Figure 2 , Figure 4 and Figure 5As shown, the connecting piece includes a threaded hole 3 opened at one end of the screw female rotor 102 near the oil pump body 2, the inner wall of the threaded hole 3 is threadedly connected to a threaded rod 301, one end of the threaded rod 301 is fixedly connected to a coupling 302, and the thread direction of the threaded hole 3 is opposite to the rotation direction of the screw female rotor 102, which can ensure that the threaded rod 301 and the threaded hole 3 rotate and are tightly fixed without loosening when the screw female rotor 102 rotates.

[0047] Further, such as Figure 5 As shown, a connecting hole 303 is opened inside the coupling 302, and a connecting rod 304 is inserted into the connecting hole 303. The connecting rod 304 is connected to the input shaft of the oil pump body 2. The cross-sections of the connecting hole 303 and the connecting rod 304 are both polygonal, preferably hexagonal. This arrangement enables the coupling 302 to drive the connecting rod 304 to rotate synchronously.

[0048] Further, such as Figure 5 As shown, a sealed bearing is provided at the connection between the outer surface of the coupling 302 and the cylinder body 104 .

[0049] When in use, after connecting the connecting shaft 103 to the driving member, the driving member can drive the screw male rotor 101 to rotate through the connecting shaft 103, thereby causing the screw female rotor 102 to rotate. The air is compressed during the rotation of the screw female rotor 102 and the screw male rotor 101, and the screw female rotor 102 drives the oil pump body 2 to operate through the threaded rod 301, the coupling 302 and the connecting rod 304 to pressurize the lubricating oil from the oil and gas barrel to the main engine.

[0050] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. An oil pump integrated screw air compressor, characterized in that: include: A screw air compressor structure (1), the screw air compressor structure (1) comprising a screw male rotor (101) and a screw female rotor (102), the screw male rotor (101) being used to connect a driving member, the screw female rotor (102) being connected to an oil pump body (2), the oil pump body (2) being driven by the screw female rotor (102) to operate to pressurize lubricating oil; A cylinder body (104) is connected between the screw male rotor (101) and the screw female rotor (102) via a bearing, and an exhaust seat (105) is mounted on one end of the cylinder body (104) away from the oil pump body (2) via bolts; A rear end cover plate (106) is mounted on a side of the exhaust seat (105) away from the cylinder body (104) by means of bolts, and the rear end cover plate (106) is used for sealing the exhaust seat (105); One end of the screw male rotor (101) away from the exhaust seat (105) is fixedly connected to a connecting shaft (103), one end of the connecting shaft (103) passes through the cylinder body (104), and a sealed bearing is provided at the connection between the connecting shaft (103) and the screw male rotor (101).

2. The oil pump integrated screw air compressor according to claim 1, characterized in that: The connecting shaft (103) is used to connect to a driving member, so that the screw male rotor (101) rotates under the drive of the driving member.

3. The oil pump integrated screw air compressor according to claim 2, characterized in that: An air intake flange (107) is arranged at the top of the cylinder body (104), and an air exhaust flange (108) communicating with the inner cavity of the cylinder body (104) is arranged at the bottom of the air exhaust seat (105).

4. The oil pump integrated screw air compressor according to claim 3, characterized in that: A connecting piece is provided between the screw female rotor (102) and the oil pump body (2), and the connecting piece is used to transmit the power of the screw female rotor (102) to the oil pump body (2).

5. The oil pump integrated screw air compressor according to claim 4, characterized in that: The connecting piece comprises a threaded hole (3) formed at one end of the screw female rotor (102) close to the oil pump body (2); a threaded rod (301) is threadedly connected to the inner wall of the threaded hole (3); and a coupling (302) is fixedly connected to one end of the threaded rod (301).

6. The oil pump integrated screw air compressor according to claim 5, characterized in that: A connecting hole (303) is provided inside the coupling (302), a connecting rod (304) is inserted into the connecting hole (303), and the connecting rod (304) is connected to the input shaft of the oil pump body (2).

7. The oil pump integrated screw air compressor according to claim 6, characterized in that: A sealed bearing is provided at the connection between the outer surface of the coupling (302) and the cylinder body (104).

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