A dry oil-free screw compressor structure assembly

Abstract

The utility model discloses a dry oil-free screw compressor structure assembly, comprising a screw compression chamber, a synchronous end cover, a tail cover and a screw balance cover which are detachably connected in sequence from right to left in the axial direction; a screw balance seat kit is arranged between the tail cover and the screw balance cover; a yin-yang screw chamber and a sandwich cooling water jacket chamber are opened on one side of the screw compression chamber close to the synchronous end cover, the sandwich cooling water jacket chamber is arranged around the yin-yang screw chamber, a cooling water inlet is arranged on one side of the yin-yang screw chamber, and a cooling water outlet is arranged on the other side; by arranging the sandwich cooling water jacket chamber with nearly full coverage and flow channel circulation characteristics for the screw compression chamber, the temperature in the yin-yang screw chamber is reduced, thereby reducing the exhaust temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a dry oil-free screw compressor structural assembly. Background Art

[0002] In the current domestic market, high-end dry oil-free screw air compressor units mainly provide power energy and gas raw materials in the production processes of medical, pharmaceutical, food, biochemistry, semiconductors, precision electronic circuits, and special gases.

[0003] In the existing compressor main engine, the compression structure assembly structure is another most important main engine core structure besides the compression screw rotor. In the medium pressure section of compressed air production (i.e., the compression ratio of the compressor main engine exceeds 2.0), it is necessary to take active and efficient cooling measures for the compression chamber, otherwise the exhaust temperature of the compressor main engine after operation will be very high (generally above 230°C). Under this high temperature condition, the bearing assembly, sealing assembly, and lubrication system in the compressor main engine will be seriously damaged and the life will be reduced. At the same time, the compression efficiency of the compressor main engine will be significantly reduced, which increases the factory production cost and consumes more energy. At present, there are three main types of dry oil-free screw main engines on the market. The interlayer water jackets of these three types of compression chambers have high exhaust temperatures due to the simple water flow scheme and different water jacket capacities. The main engine shells are bulky and thin-walled. The thin-walled ones have the situation of tympanic membrane effect amplifying the compression vibration noise. Therefore, it is urgent to improve the existing compressor and design a dry oil-free screw compressor structure assembly with the function of reducing exhaust temperature and vibration noise. Utility Model Content

[0004] The utility model aims to provide a dry oil-free screw compressor structural assembly to solve the problems existing in the above-mentioned prior art.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] The utility model provides a dry oil-free screw compressor structure assembly, including a screw compression chamber, a synchronous end cover, a tail cover and a screw balance cover which are detachably connected in sequence from right to left in the axial direction;

[0007] A screw balancing seat kit is provided between the tail cover and the screw balancing cover;

[0008] The screw compression chamber is provided with a yin-yang screw chamber and an interlayer cooling water jacket chamber on one side close to the synchronous end cover. The interlayer cooling water jacket chamber is arranged around the yin-yang screw chamber. A cooling water inlet is provided on one side of the yin-yang screw chamber and a cooling water outlet is provided on the other side.

[0009] Preferably, a plurality of reinforcing ribs are arranged in an annular shape on the outer side of the screw compression cavity.

[0010] Preferably, a drive end seal bearing seat is provided on a side of the screw compression chamber away from the synchronous end cover.

[0011] Preferably, a cooling water inlet flange and a cooling water outlet flange corresponding to the cooling water inlet and the cooling water outlet are provided on the outer side of the synchronous end cover.

[0012] Preferably, a tail cover oil return port flange is provided on the outer side of the tail cover.

[0013] Preferably, an air inlet flange and an air outlet flange are arranged on the outer surface of the screw compression chamber, and the angle between the air inlet flange and the air outlet flange is 90 degrees.

[0014] Preferably, a first oil and gas air hole and a third oil and gas air hole are symmetrically arranged on the outside of the screw compression chamber in a direction perpendicular to its axial direction, and a second oil and gas air hole parallel to the first oil and gas air hole and a fourth oil and gas air hole parallel to the third oil and gas air hole are arranged on the outside of the tail cover.

[0015] Preferably, a synchronous end cover sealing bearing member is provided on a side of the synchronous end cover away from the male and female screw chambers.

[0016] Compared with the prior art, the utility model has achieved the following beneficial technical effects:

[0017] The utility model provides a dry oil-free screw compressor structure assembly, which reduces the temperature in the positive and negative screw chambers and thus reduces the exhaust temperature by arranging a sandwich cooling water jacket chamber with nearly full coverage and flow channel circulation characteristics for the screw compression cavity; reinforcing ribs are arranged to reduce the tympanic effect of the pulsating airflow on the outer shell during compression work, thereby increasing the radiation vibration noise, and improve the aesthetic appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 This is a schematic diagram of the structure assembly of a dry oil-free screw compressor in the utility model;

[0020] Figure 2 This is an isometric exploded schematic diagram of a dry oil-free screw compressor structural assembly of the utility model;

[0021] Figure 3 This is a left view of a dry oil-free screw compressor structure assembly of the utility model;

[0022] Figure 4 This is a bottom left bottom view of a dry oil-free screw compressor structure assembly of the utility model;

[0023] Figure 5 This is a front view of a dry oil-free screw compressor structure assembly of the utility model;

[0024] Figure 6 This is a right view of a dry oil-free screw compressor structure assembly of the utility model;

[0025] Figure 7 This is a rear view of a dry oil-free screw compressor structure assembly of the utility model;

[0026] In the figure: 1 is the screw compression chamber, 2 is the synchronous end cover, 3 is the tail cover, 4 is the screw balancing kit, 5 is the screw balancing cover, 6 is the yin and yang screw chambers, 7 is the interlayer cooling water jacket chamber, 8 is the synchronous end cover seal bearing seat, 9 is the reinforcing rib, 10 is the cooling water inlet flange, 11 is the cooling water outlet flange, 12 is the tail cover oil return port flange, 13 is the air inlet flange, 14 is the exhaust port flange, 15 is the first oil and gas air vent, 16 is the second oil and gas air vent, 17 is the third oil and gas air vent, 18 is the fourth oil and gas air vent, 19 is the drive end seal bearing seat, and A is 90 degrees. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The purpose of the utility model is to provide a method to solve the problems existing in the prior art.

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] Embodiment 1:

[0031] This embodiment provides a dry oil-free screw compressor structure assembly, such as Figure 1-7 As shown, it includes a screw compression chamber 1, a synchronous end cover 2, a tail cover 3 and a screw balance cover 5 which are detachably connected in sequence from right to left in the axial direction;

[0032] A screw balancing seat kit 4 is provided between the tail cover 3 and the screw balancing cover 5;

[0033] A yin-yang screw chamber 6 and an interlayer cooling water jacket chamber 7 are provided on one side of the screw compression chamber 1 close to the synchronous end cover 2. The yin-yang screw chamber 6 is located in the middle of the screw compression chamber 1, and the interlayer cooling water jacket chamber 7 is arranged around the yin-yang screw chamber 6. A cooling water inlet is provided on one side of the yin-yang screw chamber 6, and a cooling water outlet is provided on the other side.

[0034] The utility model reduces the temperature in the male and female screw chambers 6 and further reduces the exhaust temperature by arranging a sandwich cooling water jacket chamber 7 with nearly full coverage and flow channel circulation characteristics for the screw compression chamber.

[0035] In this embodiment, two reinforcing ribs 9 are arranged in a ring shape on the outer side of the screw compression chamber 1 .

[0036] The utility model is provided with reinforcing ribs 9 to reduce the tympanic effect of the pulsating airflow on the outer shell during compression work, thereby increasing the radiation vibration noise, and improves the appearance of the appearance.

[0037] In this embodiment, a driving end seal bearing seat 19 is provided on the side of the screw compression chamber 1 away from the synchronous end cover 2 .

[0038] In this embodiment, a cooling water inlet flange 10 corresponding to the cooling water inlet and a cooling water outlet flange 11 corresponding to the cooling water outlet are arranged on the outer side of the synchronous end cover 2 .

[0039] In this embodiment, a tail cover oil return port flange 12 is arranged on the outer side of the tail cover 3 .

[0040] In the utility model, a tail cover oil return port flange 12 is provided, and the lubricating oil after lubricating the gears and bearings in the running compression main engine can quickly flow back to the oil storage tank of the air compressor unit through the oil return port at the low position of the tail cover 3 at a low position, thereby achieving a quick auxiliary effect of circulating lubrication.

[0041] In this embodiment, an air inlet flange 13 and an air outlet flange 14 are provided on the outer surface of the screw compression chamber 1, and the angle between the air inlet flange 13 and the air outlet flange 14 is 90 degrees.

[0042] In the utility model, the air inlet flange 13 and the air outlet flange 14 of the compressed air are arranged at a right angle of 90 degrees, so as to facilitate the clear and simple setting design of the external pipeline.

[0043] In this embodiment, a first oil and gas air hole 15 and a third oil and gas air hole 17 are symmetrically arranged on the outside of the screw compression chamber 1 in a direction perpendicular to its axial direction, and a second oil and gas air hole 16 parallel to the first oil and gas air hole 15 and a fourth oil and gas air hole 18 parallel to the third oil and gas air hole 17 are arranged on the outside of the tail cover 3.

[0044] In this embodiment, the first oil and gas vent hole 15 is located between the air inlet flange 13 and the air outlet flange 14 .

[0045] In this embodiment, a synchronous end cover sealing bearing member 8 is provided on a side of the synchronous end cover 2 away from the male and female screw chambers 6 .

[0046] The utility model provides a dry oil-free screw compressor structure assembly, the screw compression chamber 1 and the synchronous end cover 2 of the screw main shaft seal assembly position structure adopts a dry oil-free screw compressor main shaft oil and gas isolation combined sealing structure utility model (publication number: CN212130789U);

[0047] When the utility model is used as an enlarged version, two lubricating oil return interface flanges arranged at 90 degrees to each other will be designed on the cover of the enlarged version to facilitate the installation of the compression host product derived from the enlarged version under different reference working conditions;

[0048] When used as a secondary high-pressure host, the installation angle of the Y axis in the XY coordinate of the central axis of the transmission gearbox corresponding to this enlarged version of the compression host assembly is 0 degrees. When used as a primary low-pressure host, the installation angle of the Y axis in the XY coordinate of the central axis of the transmission gearbox corresponding to this enlarged version of the host assembly is 90 degrees counterclockwise. After the lubricating oil on the gears and bearings in the running compression host is completed, it can quickly flow back to the oil storage tank of the air compressor unit through the oil return port at the low position of the tail cover at a low position, so as to achieve a quick auxiliary effect of circulating lubrication. Steel pipe connection transition connection ports are provided on the tail cover component and the balance cover to facilitate the application of the compressor host under large compression ratio conditions. The high-pressure air force at the exhaust port of the compression chamber component is transmitted to the thrust balance seat kit through the external air pipe to offset the negative destructive torque of the axial stringing caused by the expansion of the high-pressure gas at the compression end of the screw component inside the compression host, thereby ensuring the normal operation and service life of the compression host.

[0049] The utility model uses specific examples to illustrate the principle and implementation of the utility model. The above examples are only used to help understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, according to the idea of ​​the utility model, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the utility model.

Claims

1. A dry oil-free screw compressor structure assembly, comprising a screw compression chamber, a synchronous end cover, a tail cover and a screw balance cover which are detachably connected in sequence from right to left in the axial direction; characterized in that: A screw balancing seat kit is provided between the tail cover and the screw balancing cover; The screw compression chamber is provided with a yin-yang screw chamber and an interlayer cooling water jacket chamber on one side close to the synchronous end cover. The interlayer cooling water jacket chamber is arranged around the yin-yang screw chamber. A cooling water inlet is provided on one side of the yin-yang screw chamber and a cooling water outlet is provided on the other side.

2. A dry oil-free screw compressor structural assembly according to claim 1, characterized in that: A plurality of reinforcing ribs are arranged in an annular shape on the outside of the screw compression cavity.

3. The dry oil-free screw compressor structure assembly according to claim 1, characterized in that: A driving end seal bearing seat is arranged on a side of the screw compression chamber away from the synchronous end cover.

4. The dry oil-free screw compressor structure assembly according to claim 1, characterized in that: A cooling water inlet flange and a cooling water outlet flange corresponding to the cooling water inlet and the cooling water outlet are arranged on the outer side of the synchronous end cover.

5. The dry oil-free screw compressor structure assembly according to claim 1, characterized in that: A tail cover oil return port flange is arranged on the outer side of the tail cover.

6. The dry oil-free screw compressor structure assembly according to claim 1, characterized in that: An air inlet flange and an air outlet flange are arranged on the outer surface of the screw compression chamber, and the angle between the air inlet flange and the air outlet flange is 90 degrees.

7. The dry oil-free screw compressor structure assembly according to claim 1, characterized in that: A first oil and gas air vent hole and a third oil and gas air vent hole are symmetrically arranged on the outside of the screw compression chamber in a direction perpendicular to its axial direction, and a second oil and gas air vent hole parallel to the first oil and gas air vent hole and a fourth oil and gas air vent hole parallel to the third oil and gas air vent hole are arranged on the outside of the tail cover.

8. The dry oil-free screw compressor structure assembly according to claim 1, characterized in that: A synchronous end cover sealing bearing member is arranged on a side of the synchronous end cover away from the male and female screw chambers.

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