Screw compressor suitable for different media

Abstract

The utility model relates to a screw compressor suitable for different media, which comprises a compressor shell, a driving motor fixedly mounted on one side of the compressor shell, a male rotor screw and a female rotor screw, wherein the male rotor screw and the female rotor screw are rotationally mounted in a compression cavity channel of the compressor shell and are meshed with each other; an output shaft of the driving motor is fixedly connected with the shaft end of one side of the male rotor screw, a second flow guide cavity channel is formed in a motor shell of the driving motor, and a second air inlet communicated with the second flow guide cavity channel is formed in the side end of the motor shell. The screw compressor provided by the utility model is provided with two paths for medium circulation, namely the medium compression path A and the medium compression path B. The medium compression path B does not pass through the interior of the motor shell and is suitable for compression work of corrosive media, corrosion to the driving motor is avoided, and in addition, when non-corrosive media are compressed, the compression efficiency is improved, and the service life of the screw compressor is prolonged. The medium compression route A can be selected for one-way operation or double-line simultaneous operation, the structural layout is reasonable, and the practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to screw compressor technical field, specifically is a screw compressor suitable for different medium. BACKGROUND

[0002] Screw compressor is a kind of positive displacement compressor, utilizes a pair of mutually meshing male and female rotor screw in cylinder rotation, and the gas is inhaled, compressed and discharged by the volume change of the tooth groove of rotor.Its working principle is that the volume between tooth grooves is gradually reduced by the rotation of male and female rotor, and the gas is compressed, and the pressure is increased, so as to realize the delivery and pressure increase of gas, and screw compressor is widely used in refrigeration, air conditioning, industrial gas delivery and other fields.

[0003] Traditional double-screw compressor only has one gas compression channel, and the driving motor shell is communicated with the inside of compressor shell, when compressing and conveying corrosive medium, corrosive medium exists and contacts with internal parts of motor, and long-term contact can cause corrosion to motor parts, reducing the service life of motor. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a screw compressor suitable for different medium, effectively solve the problem raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme.

[0006] A screw compressor suitable for different medium, including compressor shell, driving motor fixedly installed at one side of compressor shell and male rotor screw and female rotor screw rotatably installed in the compression cavity of compressor shell and mutually meshing, the output shaft of driving motor is fixedly connected with the one side shaft end of male rotor screw, the motor shell of driving motor has second flow guide cavity, the side end of motor shell has second air inlet communicated with second flow guide cavity, first flow guide cavity is arranged in compressor shell, first flow guide cavity is used for connecting compression cavity and second flow guide cavity, compression cavity and first flow guide cavity are arranged in ladder shape, the inner wall of first flow guide cavity is installed with blocking plate, adjusting mechanism is arranged on compressor shell, adjusting mechanism is used to drive blocking plate to slide along the inner wall of first flow guide cavity and is adjusted, to realize the opening and closing adjustment between compression cavity and first flow guide cavity.

[0007] Preferably, the side of compressor shell away from driving motor has exhaust part, exhaust part is communicated with compression cavity, first air inlet is arranged on compressor shell close to adjusting mechanism, and first air inlet is communicated with compression cavity.

[0008] Preferably, second air inlet, second flow guide cavity, first flow guide cavity, compression cavity and exhaust part form medium compression route A.

[0009] Preferably, the medium compression route B is formed by the first air inlet, the compression cavity and the exhaust part.

[0010] Preferably, the adjusting mechanism comprises an adjusting screw and a guide rod, a threaded hole is arranged on the compressor shell, a guide hole is arranged on an end wall of the threaded hole, the adjusting screw is screwed into the threaded hole in a threaded matching mode, and one end of the adjusting screw extends to the outside, the guide rod is slidingly installed in the guide hole, one end of the guide rod extends to the first flow guide cavity and is fixed with the blocking plate, the other end of the guide rod extends to the threaded hole and is rotationally connected with the bottom end of the adjusting screw, and a handle is arranged on the outer end of the adjusting screw.

[0011] Preferably, a blocking cover for blocking the first air inlet is further arranged on the first air inlet, and the blocking cover is detachably installed on the first air inlet through fastening bolts.

[0012] Compared with the prior art, the screw compressor has the following beneficial effects.

[0013] The screw compressor provided by the utility model has two routes for medium circulation, which are medium compression route A and medium compression route B, wherein the medium compression route B does not pass through the motor shell, is suitable for the compression work of corrosive medium, avoids corrosion on the driving motor, and in addition, when non-corrosive medium is compressed, the medium compression route A can be selected for one-way operation or double-line simultaneous operation, the structure layout is reasonable, and the practicality is high.

[0014] When the single-line operation or double-line compression operation of the medium compression route A is adopted, the medium can enter from the second air inlet and flow through the motor shell to generate airflow, so that the heat generated by the internal components of the driving motor during operation can be taken away, and the driving motor is additionally cooled.

[0015] The utility model utilizes the threaded cooperation of the adjusting screw and the threaded hole, has a self-locking effect, the adjusting screw does not rotate at will when not being adjusted by screwing, and then the state of the blocking plate is maintained, and the stability during the compression work is ensured. DETAILED DESCRIPTION

[0016] Figure 1 It is a whole structure perspective view of the utility model;

[0017] Figure 2 It is a partial sectional view of the utility model;

[0018] Figure 3 It is Figure 2 It is an enlarged schematic view of structure at A. DETAILED DESCRIPTION

[0019] Please refer to Figures 1-3This utility model provides a screw compressor suitable for different media, including a first flow channel 01, a compressor housing 1, a compression channel 101, a first air inlet 11, a sealing cover 111, a fastening bolt 112, an exhaust section 12, a drive motor 2, a motor housing 21, a second flow channel 211, a second air inlet 22, a male rotor screw 3, a female rotor screw 4, a sealing plate 5, an adjusting mechanism 6, a threaded hole 601, a guide hole 602, an adjusting screw 61, a guide rod 62, and a torsion handle 63.

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to 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 utility model.

[0022] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0023] like Figures 1 to 3 As shown, the drive motor 2 is fixedly installed on one side of the compressor housing 1. The male rotor screw 3 and the female rotor screw 4 are rotatably installed in the compression cavity 101 of the compressor housing 1 and mesh with each other. The output shaft of the drive motor 2 is fixedly connected to one side of the shaft end of the male rotor screw 3. When the drive motor 2 works, it can drive the male rotor screw 3 to rotate through its output shaft. Under the meshing action of the two rotor screws, the male rotor screw 3 meshes and drives the female rotor screw 4 to rotate, thereby realizing the compression of the medium.

[0024] The motor housing 21 of the driving motor 2 has a second flow guide channel 211, and the side end of the motor housing 21 has a second air inlet 22 communicating with the second flow guide channel 211. The compressor housing 1 is provided with a first flow guide channel 01, and the first flow guide channel 01 is used to communicate the compression channel 101 and the second flow guide channel 211. The compression channel 101 and the first flow guide channel 01 are arranged in a stepped manner. The first flow guide channel 01 is provided with a blocking plate 5 on the inner wall. The compressor housing 1 is provided with an adjusting mechanism 6, which is used to drive the blocking plate 5 to slide along the inner wall of the first flow guide channel 01 for adjustment, so as to realize the opening and closing adjustment between the compression channel 101 and the first flow guide channel 01. The side of the compressor housing 1 away from the driving motor 2 is provided with an exhaust part 12, which communicates with the compression channel 101. The compressor housing 1 is provided with a first air inlet 11 near the adjusting mechanism 6, which communicates with the compression channel 101.

[0025] The second air inlet 22, the second flow guide channel 211, the first flow guide channel 01, the compression channel 101 and the exhaust part 12 form a medium compression route A. The first air inlet 11, the compression channel 101 and the exhaust part 12 form a medium compression route B. The first air inlet 11 is also provided with a blocking cover 111 for blocking the first air inlet 11. The blocking cover 111 is detachably mounted on the first air inlet 11 by a fastening bolt 112.

[0026] The blocking plate 5 is used to block the compression channel 101 and the first flow guide channel 01, and the fastening bolt 112 is removed to detach the blocking cover 111 from the first air inlet 11. When the compressed medium enters the compression channel 101 from the first air inlet 11, it is compressed by the meshing rotation of the male rotor screw 3 and the female rotor screw 4, and then discharged from the exhaust part 12, realizing single-line operation of the medium compression route B. The compressed medium cannot enter the motor housing 21 under the blockage of the blocking plate 5, which is suitable for the compression of corrosive medium.

[0027] In addition, the blocking plate 5 is removed to unblock the compression channel 101 and the first flow guide channel 01, and the first air inlet 11 is blocked by the blocking cover 111. When the compressed medium enters the second flow guide channel 211 from the second air inlet 22, it flows through the first flow guide channel 01 and the compression channel 101 in turn, and is finally discharged from the exhaust part 12, realizing single-line operation of the medium compression route A.

[0028] The blocking plate 5 is removed to unblock the compression channel 101 and the first flow guide channel 01, and the fastening bolt 112 is removed to detach the blocking cover 111 from the first air inlet 11. When the compressed medium is simultaneously sucked from the first air inlet 11 and the second air inlet 22, it is compressed to the exhaust part 12 through the medium compression route A and the medium compression route B, realizing double-line compression operation.

[0029] The single-line operation and the double-line compression operation of the medium compression route A are suitable for the compression operation of non-corrosive medium, and in addition, no matter the single-line operation or the double-line compression operation of the medium compression route A, the medium can enter from the second air inlet 22 and flow through the airflow generated in the motor shell 21, so as to take away the heat generated by the internal components of the driving motor 2, thereby achieving the additional heat dissipation and cooling effect of the driving motor 2.

[0030] In addition, it is worth noting that the driving motor 2 in the application has a high-temperature resistance effect, and even if the single-line compression operation of the medium compression route B is adopted, it will not fail due to lack of cooling. The specific high-temperature resistance principle is not described in detail by using the prior art.

[0031] Specifically, the adjusting mechanism 6 includes an adjusting screw 61 and a guide rod 62, the compressor shell 1 is provided with a threaded hole 601, the inner end wall of the threaded hole 601 is provided with a guide hole 602, the adjusting screw 61 is screw matched and screwed in the threaded hole 601, and one end extends to the outside, the guide rod 62 is slidingly installed in the guide hole 602, one end of the guide rod 62 extends to the first flow guide cavity 01 and is fixed with the blocking plate 5, and the other end extends to the threaded hole 601 and is rotationally connected with the bottom end of the adjusting screw 61, and a handle 63 is installed on the outer end of the adjusting screw 61.

[0032] By pinching the handle 63 to adjust the adjusting screw 61, the guide rod 62 can be adjusted up and down under the screw thread cooperation of the adjusting screw 61 and the threaded hole 601, and the blocking plate 5 can be synchronously adjusted up and down along the inner wall of the first flow guide cavity 01, when the blocking plate 5 is adjusted to the limit state, the blocking plate 5 blocks between the compression cavity 101 and the first flow guide cavity 01, so as to facilitate the single-line operation of the medium compression route B, and when the blocking plate 5 is adjusted to be up, the compression cavity 101 and the first flow guide cavity 01 are communicated, so as to facilitate the medium flow.

[0033] In addition, the screw thread cooperation of the adjusting screw 61 and the threaded hole 601 has a self-locking effect, and the adjusting screw 61 will not rotate randomly when not adjusted, thereby helping to maintain the state of the blocking plate 5 and ensuring the stability during the compression operation.

[0034] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A screw compressor suitable for different media, comprising a compressor housing (1), a driving motor (2) fixedly installed on one side of the compressor housing (1), and a male rotor screw (3) and a female rotor screw (4) rotatably installed in a compression cavity (101) of the compressor housing (1) and meshing with each other, characterized in that: The output shaft of the driving motor (2) is fixedly connected with one side shaft end of the male rotor screw (3); the motor shell (21) of the driving motor (2) has a second flow guide channel (211) therein, and the side end of the motor shell (21) has a second air inlet (22) communicated with the second flow guide channel (211); the compressor shell (1) is provided with a first flow guide channel (01) therein, and the first flow guide channel (01) is used for connecting the compression channel (101) and the second flow guide channel (211); the compression channel (101) and the first flow guide channel (01) are arranged in a stepped manner, a blocking plate (5) is mounted on the inner wall of the first flow guide channel (01), and the compressor shell (1) is provided with an adjusting mechanism (6); the adjusting mechanism (6) is used for driving the blocking plate (5) to slide along the inner wall of the first flow guide channel (01) for adjustment, so as to realize opening and closing adjustment between the compression channel (101) and the first flow guide channel (01).

2. Screw compressor suitable for different media according to claim 1, characterized in that: The side of the compressor shell (1) away from the driving motor (2) is provided with an exhaust part (12) communicated with the compression channel (101); The compressor shell (1) is provided with a first air inlet (11) close to the adjusting mechanism (6), and the first air inlet (11) is communicated with the compression channel (101).

3. Screw compressor suitable for different media according to claim 2, characterized in that: The second air inlet (22), the second flow guide channel (211), the first flow guide channel (01), the compression channel (101) and the exhaust part (12) form a medium compression route A.

4. Screw compressor for different media according to claim 2, characterized in that The first air inlet (11), the compression channel (101) and the exhaust part (12) form a medium compression route B.

5. A screw compressor suitable for different media according to claim 1, characterized in that: The adjusting mechanism (6) comprises an adjusting screw (61) and a guide rod (62); the compressor shell (1) is provided with a threaded hole (601), and the inner end wall of the threaded hole (601) is provided with a guide hole (602); the adjusting screw (61) is screw matched and screwed in the threaded hole (601), and one end extends to the outside; the guide rod (62) is slidingly installed in the guide hole (602), one end of the guide rod (62) extends into the first flow guide channel (01) and is fixed with the blocking plate (5), and the other end extends into the threaded hole (601) and is rotationally connected with the bottom end of the adjusting screw (61); a knob (63) is mounted on the outer end of the adjusting screw (61).

6. A screw compressor suitable for different media according to claim 2, characterized in that: The first air inlet (11) is further provided with a blocking cover (111) for blocking the first air inlet (11), and the blocking cover (111) is detachably mounted on the first air inlet (11) through a fastening bolt (112).

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