CN113048669A

CN113048669A - Low-noise screw type water chilling unit

Info

Publication number: CN113048669A
Application number: CN202110337329.7A
Authority: CN
Inventors: 张锦武; 王波; 赵伟
Original assignee: China Construction Second Bureau Installation Engineering Co Ltd
Current assignee: China Construction Second Bureau Installation Engineering Co Ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-06-29

Abstract

The invention discloses a low-noise screw type water chilling unit, which comprises a bearing base, wherein a screw type water chilling unit is arranged on the bearing base; a plurality of groups of loaders are integrally arranged at the bottom of the bearing base; the load carrier is fixedly arranged in the rubber cylinder; two groups of buffer rods are fixedly arranged in the bearing base; the top of the buffer rod is fixedly provided with an installation plate; the top of the buffer rod is fixedly provided with an installation frame; the top of the mounting frame is fixedly provided with a screw type water chilling unit; a plurality of groups of positioning rods are fixedly arranged on the outer side of the bearing base; the top of the bearing base is provided with a plurality of groups of blocking and sound absorbing mechanisms through positioning rods; the top of the sound blocking and absorbing mechanism is fixedly provided with a sound blocking and absorbing cover; inhale the sound mechanism and the separation and inhale and cooperate between the sound lid, form an inclosed installation space, install sealedly to the cooling water set to the noise that vibrations produced when working the cooling water set carries out separation, absorption, prevents that the noise from spreading the normal life that influences resident on every side to every side.

Description

Low-noise screw type water chilling unit

Technical Field

The invention relates to the technical field of water chilling units, in particular to a low-noise screw type water chilling unit.

Background

The screw type water chilling unit is a water chilling unit taking various screw compressors as a main machine and is an assembled refrigerating device consisting of a screw type refrigerating compressor, a condenser, an evaporator, a thermal expansion valve, an oil separator, an automatic control element, an instrument and the like, wherein the screw type water chilling unit is named as a screw type water chilling unit because the compressor which is a key part of the screw type water chilling unit adopts a screw type, and the unit is a gas refrigerant in a state coming out of the evaporator; the compressed gas refrigerant is cooled and condensed in a condenser at equal pressure, is changed into liquid refrigerant after being condensed, and is expanded to low pressure through a throttle valve to become gas-liquid mixture. The liquid refrigerant under low temperature and low pressure absorbs the heat of the cooled matter in the evaporator and is changed into gaseous refrigerant, and the gaseous refrigerant enters the compressor again through the pipeline to start new circulation.

Through retrieval of patents such as patent number CN105299941A, a flooded screw machine water chilling unit is disclosed, which comprises a main machine, an evaporator, an oil separator, a low-pressure circulating barrel and a horizontal condenser, wherein a refrigerant outlet of the main machine is connected with a refrigerant inlet of the oil separator, a refrigerant outlet of the oil separator is connected with an inlet of the evaporator, an outlet of the evaporator is connected with a refrigerant inlet of the low-pressure circulating barrel, a refrigerant outlet of the low-pressure circulating barrel is connected with a refrigerant inlet of the horizontal condenser, a refrigerant outlet of the horizontal condenser is connected with an air inlet of the low-pressure circulating barrel, and an air outlet of the low-pressure circulating barrel is connected with a refrigerant inlet of the main machine; the flooded screw machine water chilling unit absorbs the characteristics of ammonia refrigeration energy conservation, good refrigeration effect and safety and convenience of Freon, improves the refrigeration efficiency of a system using Freon as a refrigerant, obviously improves the comprehensive energy efficiency ratio, greatly reduces the energy consumption, can realize long-term stable automatic operation, and avoids the problems of high energy consumption and high operation and maintenance cost of the existing water chilling unit.

However, most of the conventional screw chiller units have a motor and a twin-screw pump directly fixed by bolts, and such a rigid fixing method causes high-frequency vibration to generate high-frequency noise, which causes great troubles to the life of people.

Disclosure of Invention

Problem (A)

The invention aims to provide a low-noise screw type water chilling unit, which solves the problems that the motor and a double-screw pump of the existing screw type water chilling unit proposed in the background technology are mostly directly fixed by bolts, the rigid fixing mode causes high-frequency vibration to generate high-frequency noise, thereby bringing great troubles to the life of people, and simultaneously, each internal electric appliance part generates vibration, generates humming noise and influences the service life of each electric appliance part to a certain extent.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a low-noise screw type water chilling unit comprises a bearing base; a plurality of groups of loaders are integrally arranged at the bottom of the bearing base; the load device is fixedly arranged in the rubber cylinder, and the rubber cylinder is fixedly arranged in the proper ground; two groups of buffer rods are fixedly arranged in the bearing base; the top of the buffer rod is fixedly provided with an installation plate; the top of the buffer rod is fixedly provided with an installation frame; the top of the mounting frame is fixedly provided with a screw type water chilling unit; a plurality of groups of positioning rods are fixedly arranged on the outer side of the bearing base, and the cross section of each positioning rod is semicircular; the top of the bearing base is provided with a plurality of groups of blocking and sound absorbing mechanisms through positioning rods; the top of the sound-absorbing blocking mechanism is fixedly provided with a sound-absorbing blocking cover.

Preferably, the bearing base further comprises a buffer groove, a fixing groove, an installation cavity, a ventilation opening and a heat dissipation fan; a plurality of groups of buffer grooves are formed in the two sides of the bearing base; the top of the bearing base is provided with a fixed groove, and the cross section of the fixed groove is in a shape of a Chinese character 'hui'; the inner side of the bearing base is provided with an installation cavity; a plurality of groups of ventilation openings are formed at the bottom of the mounting cavity; the inner side of the ventilation opening is fixedly provided with a heat dissipation fan.

Preferably, the load carrier also comprises a load carrier, an installation bottom piece, a limiting block, a sliding rod, a return spring, a fixed bottom block and a steel wire rope; the mounting bottom piece is mounted at the bottom of the bearing base; the bottom of the installation bottom piece is integrally provided with the installation bottom piece; a sliding rod is fixedly arranged on the inner side of the mounting bottom piece; a return spring is fixedly arranged on the outer side of the sliding rod; the bottom of the sliding rod is fixedly provided with a fixed bottom block; and a plurality of groups of steel wire ropes are fixedly arranged on the outer side of the fixed bottom block.

Preferably, the buffer rod further comprises a mounting block, a buffer spring, a sliding ring, a positioning block and a spring support piece; a plurality of groups of mounting blocks are fixedly mounted on the outer side of the buffer rod; buffer springs are fixedly arranged on two sides of the buffer rod pair; sliding rings are fixedly arranged on two sides of the buffer rod; positioning blocks are integrally arranged on two sides of the sliding ring, and the cross section of each positioning block is T-shaped; the inner side of the positioning block is fixedly provided with a spring support piece, and the support piece spring support piece is fixedly arranged on the inner side of the buffer groove.

Preferably, the mounting plate further comprises a sliding bump, a movable column, a positioning spring and a load-carrying slider; a plurality of groups of sliding lugs are fixedly arranged at the top of the mounting plate; a movable column is fixed on the inner side of the sliding convex block; positioning springs are fixedly arranged on two sides of the movable column; the outer side of the movable column is movably provided with a load sliding block, and the top of the load sliding block is fixedly provided with an installation frame.

Preferably, the blocking and sound-absorbing mechanism further comprises a blocking and sound-absorbing plate, a fixing piece, a positioning projection, an observation plate, a positioning projection and a mounting groove; a plurality of groups of fixing pieces are fixedly arranged on the outer side of the blocking acoustic board; a plurality of groups of positioning protrusions are fixedly arranged on the outer side of the blocking acoustic board; an observation plate is arranged on one side of the obstructing acoustic board through a rotating shaft; the bottom of the blocking sound-absorbing plate is integrally provided with a positioning lug, and the positioning lug is arranged inside the fixing groove; the top of separation abatvoix has seted up the mounting groove, and the cross-sectional shape of mounting groove is "returning" font.

Preferably, the sound blocking and absorbing cover further comprises a locking piece, a locking block, a mounting lug, a collecting cover and a discharge pipe; locking pieces are fixedly arranged on two sides of the sound blocking and absorbing cover and are arranged on the inner sides of the locking pieces; the bottom of the locking piece is fixedly provided with a locking block; the bottom of the blocking sound absorption cover is integrally provided with an installation lug, and the installation lug is fixedly installed inside the installation groove; a plurality of groups of collecting covers are fixedly arranged at the bottom of the blocking sound-absorbing cover; the top of the collecting cover is fixedly provided with a discharge pipe.

(III) advantageous effects

The invention provides a low-noise screw type water chilling unit, which is characterized in that a load carrier is arranged, the load carrier can support the whole water chilling unit, the water chilling unit is not in direct contact with the ground, and meanwhile, a steel wire rope and a rubber cylinder are matched with each other, so that the problem that most of the existing devices are rigidly fixed is solved, the water chilling unit is prevented from vibrating and colliding with the ground when working, noise is generated to influence the normal life of surrounding personnel, the vibration is prevented from causing the loosening and damage of parts in the water chilling unit, and the service life of the water chilling unit is prolonged.

Through being provided with and bearing the base, the cooperation between buffer beam and the mounting panel supports and fixes the cooling water set is whole, and the buffer beam can control the cooling water set and shake from top to bottom and cushion, prevents that the excessive vibrations of cooling water set from producing the noise, prevents simultaneously that cooling water set spare part from damaging, and the mounting panel is when installing fixedly to the cooling water set, cushions the all around vibrations that the cooling water set during operation produced, further improves the stability of cooling water set during operation.

Inhale the sound lid separation through being provided with the separation and inhale the sound mechanism, the separation is inhaled sound mechanism and separation and is inhaled and cooperate between the sound lid, forms an inclosed installation space, install sealedly to the cooling water set to carry out the separation to the noise that cooling water set during operation vibrations produced, absorb, prevent that the noise from to propagate around influence resident's around normal life, the sound lid is inhaled in the separation simultaneously and is cooperated with vent and heat dissipation fan, continuously dispel the heat to the device inside, prevent that long-time continuous work cooling water set is overheated.

Drawings

FIG. 1 is a schematic front view of a main body according to an embodiment of the present invention;

FIG. 2 is a schematic bottom view of the main body according to the embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a main body according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a load-bearing base according to an embodiment of the present invention;

FIG. 5 is a schematic view of a mounting plate structure according to an embodiment of the present invention;

FIG. 6 is a cross-sectional view of a load-bearing base according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a blocking and sound-absorbing mechanism in an embodiment of the present invention;

FIG. 8 is a structural diagram of a mounting frame according to an embodiment of the present invention;

FIG. 9 is a schematic view of a buffer rod according to an embodiment of the present invention;

FIG. 10 is a schematic view of a load carrier according to an embodiment of the present invention;

in fig. 1 to 10, the correspondence between the part names or lines and the reference numbers is:

1. a load bearing base; 101. a buffer tank; 102. fixing grooves; 103. a mounting cavity; 104. a vent; 105. a heat dissipation fan; 106. positioning a rod; 2. a load carrier; 201. installing a bottom piece; 202. a limiting block; 203. a slide bar; 204. a return spring; 205. fixing the bottom block; 206. a wire rope; 207. a rubber cylinder; 3. a buffer rod; 301. mounting blocks; 302. a buffer spring; 303. a slip ring; 304. positioning blocks; 305. a spring support; 4. mounting a plate; 401. a sliding projection; 402. a movable post; 403. a positioning spring; 404. a load slider; 5. installing a frame; 501. a water chilling unit; 6. a sound-absorbing blocking mechanism; 601. blocking the acoustic panel; 602. a fixing member; 603. positioning protrusions; 604. an observation plate; 605. positioning the bump; 606. mounting grooves; 7. blocking the sound absorption cover; 701. a locking member; 702. a locking block; 703. mounting a bump; 704. a collection hood; 705. and (4) discharging the water.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 10, an embodiment of the present invention includes: a low-noise screw type water chilling unit comprises a bearing base 1; a plurality of groups of loaders 2 are integrally arranged at the bottom of the bearing base 1; the load carrier 2 is fixedly arranged inside the rubber tube 207, and the rubber tube 207 is fixedly arranged inside a proper ground; two groups of buffer rods 3 are fixedly arranged in the bearing base 1; the top of the buffer rod 3 is fixedly provided with an installation plate 4; the top of the buffer rod 3 is fixedly provided with an installation frame 5; the top of the mounting frame 5 is fixedly provided with a screw type water chilling unit 501; a plurality of groups of positioning rods 106 are fixedly arranged on the outer side of the bearing base 1, and the cross section of each positioning rod 106 is semicircular; the top of the bearing base 1 is provided with a plurality of groups of blocking and sound absorbing mechanisms 6 through positioning rods 106; the top of the sound blocking and absorbing mechanism 6 is fixedly provided with a sound blocking and absorbing cover 7; the bearing base 1 further comprises a buffer groove 101, a fixing groove 102, a mounting cavity 103, a ventilation opening 104 and a heat dissipation fan 105; a plurality of groups of buffer grooves 101 are arranged on two sides of the bearing base 1; the top of the bearing base 1 is provided with a fixing groove 102, and the cross section of the fixing groove 102 is in a shape like a Chinese character 'hui'; the inner side of the bearing base 1 is provided with a mounting cavity 103; a plurality of groups of ventilation openings 104 are formed at the bottom of the mounting cavity 103; a heat dissipation fan 105 is fixedly installed on the inner side of the ventilation opening 104; the loader 2 also comprises a loader 2, an installation bottom piece 201, a limiting block 202, a sliding rod 203, a return spring 204, a fixed bottom block 205 and a steel wire rope 206; the mounting bottom piece 201 is mounted at the bottom of the bearing base 1; the bottom of the installation bottom piece 201 is integrally provided with the installation bottom piece 201; a sliding rod 203 is fixedly arranged on the inner side of the mounting bottom piece 201; a return spring 204 is fixedly arranged on the outer side of the sliding rod 203; the bottom of the sliding rod 203 is fixedly provided with a fixed bottom block 205; a plurality of groups of steel wire ropes 206 are fixedly arranged on the outer side of the fixed bottom block 205.

Wherein, the buffer rod 3 further comprises a mounting block 301, a buffer spring 302, a sliding ring 303, a positioning block 304 and a spring support 305; a plurality of groups of mounting blocks 301 are fixedly mounted on the outer side of the buffer rod 3; buffer springs 302 are fixedly arranged on two sides of the buffer rod 3; two sides of the buffer rod 3 are fixedly provided with sliding rings 303; positioning blocks 304 are integrally arranged on two sides of the sliding ring 303, and the cross section of each positioning block 304 is T-shaped; a spring support 305 is fixedly installed on the inner side of the positioning block 304, and the support spring support 305 is fixedly installed on the inner side of the buffer slot 101; the setting of buffer beam 3 can make the unsettled base 1 top that bears that is fixed in of cooling water set 501, prevents that the device from carrying out direct contact with ground, leads to cooling water set 501 vibrations from top to bottom to produce the noise, can cushion cooling water set 501 vibrations about simultaneously, improves the stability of device.

The mounting plate 4 further comprises a sliding lug 401, a movable column 402, a positioning spring 403 and a load-carrying slider 404; a plurality of groups of sliding lugs 401 are fixedly arranged at the top of the mounting plate 4; a movable column 402 is fixed on the inner side of the sliding convex block 401; positioning springs 403 are fixedly arranged on two sides of the movable column 402; a load sliding block 404 is movably arranged on the outer side of the movable column 402, and a mounting frame 5 is fixedly mounted at the top of the load sliding block 404; the setting of mounting panel 4 can conveniently carry out fixed mounting to cooling water set 501, simultaneously through activity post 402 and positioning spring 403 cooperation, cushions cooling water set 501 vibrations all around, further improves the stability of device, prevents that cooling water set 501 spare part from producing because of vibrations not hard up and damage, the life of improvement device.

The blocking and sound-absorbing mechanism 6 further comprises a blocking and sound-absorbing plate 601, a fixing piece 602, a positioning projection 603, an observation plate 604, a positioning bump 605 and a mounting groove 606; a plurality of groups of fixing pieces 602 are fixedly arranged on the outer side of the blocking sound-absorbing plate 601; a plurality of groups of positioning protrusions 603 are fixedly arranged on the outer side of the blocking acoustic board 601; an observation plate 604 is arranged on one side of the blocking acoustic board 601 through a rotating shaft; the bottom of the blocking sound-absorbing board 601 is integrally provided with a positioning bump 605, and the positioning bump 605 is installed inside the fixing groove 102; the top of the blocking acoustic board 601 is provided with a mounting groove 606, and the cross section of the mounting groove 606 is in a shape like a Chinese character 'hui'; the setting of sound mechanism 6 is inhaled in the separation, carries out the separation to the noise that the cooling water set 501 vibrations produced, absorbs the noise simultaneously, prevents that the noise from influencing resident's normal life.

Wherein, the sound blocking and absorbing cover 7 further comprises a locking piece 701, a locking block 702, a mounting lug 703, a collecting cover 704 and a discharge pipe 705; locking pieces 701 are fixedly installed on two sides of the sound blocking and absorbing cover 7, and the locking pieces 701 are installed on the inner sides of the fixing pieces 602; a locking block 702 is fixedly arranged at the bottom of the locking piece 701; the bottom of the blocking sound absorption cover 7 is integrally provided with an installation bump 703, and the installation bump 703 is fixedly installed inside the installation groove 606; a plurality of groups of collecting covers 704 are fixedly arranged at the bottom of the blocking sound-absorbing cover 7; a discharge pipe 705 is fixedly arranged at the top of the collection cover 704; the setting of sound lid 7 is inhaled in the separation is when carrying out the separation to the noise, and the heat that makes things convenient for the inside production of device is discharged, prevents that long-time continuous work cooling water set 501 is overheated.

The working principle is as follows: when the invention is used, firstly, the rubber cylinder 207 is installed in a proper ground, then the bearing base 1 is installed right above the rubber cylinder 207 through the loader 2, the rubber cylinder is positioned and fixed through the steel wire rope 206, then the installation frame 5 is installed in the installation cavity 103, the installation is fixedly installed through the matching between the buffer rod 3 and the installation plate 4, then the water chilling unit 501 is assembled and installed on the inner side of the installation frame 5, then the blocking sound absorption mechanism 6 is installed on the top of the bearing base 1, the blocking sound absorption mechanism is fixed through the matching between the positioning rod 106 and the positioning protrusion 603, then the blocking sound absorption cover 7 is installed on the top of the blocking sound absorption plate 601, the locking piece 701, the locking block 702 and the fixing piece 602 are matched and locked, so that the blocking sound absorption mechanism 6 and the blocking sound absorption cover 7 are matched to form a closed space, the water chilling unit 501 is blocked, and the noise generated by the vibration, The noise is prevented from being propagated to the periphery to influence the normal life of surrounding residents, meanwhile, when the water chilling unit 501 works, the heat dissipation fan 105 is started to dissipate heat inside the device, and the collection cover 704 and the discharge pipe 705 are matched to discharge hot air out of the device to continuously dissipate heat of the device.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a low noise screw cooling water set which characterized in that: comprises a bearing base (1); a plurality of groups of loaders (2) are integrally arranged at the bottom of the bearing base (1); the load carrier (2) is fixedly arranged in the rubber cylinder (207), and the rubber cylinder (207) is fixedly arranged in the proper ground; two groups of buffer rods (3) are fixedly arranged in the bearing base (1); the top of the buffer rod (3) is fixedly provided with an installation plate (4); the top of the buffer rod (3) is fixedly provided with an installation frame (5); the top of the mounting frame (5) is fixedly provided with a screw type water chilling unit (501); a plurality of groups of positioning rods (106) are fixedly arranged on the outer side of the bearing base (1), and the cross section of each positioning rod (106) is semicircular; a plurality of groups of blocking and sound-absorbing mechanisms (6) are arranged at the top of the bearing base (1) through positioning rods (106); and a blocking sound absorption cover (7) is fixedly arranged at the top of the blocking sound absorption mechanism (6).

2. The low noise screw chiller of claim 1, wherein: the bearing base (1) further comprises a buffer groove (101), a fixing groove (102), an installation cavity (103), a ventilation opening (104) and a heat dissipation fan (105); a plurality of groups of buffer grooves (101) are arranged on two sides of the bearing base (1); the top of the bearing base (1) is provided with a fixing groove (102), and the cross section of the fixing groove (102) is in a shape like a Chinese character 'hui'; the inner side of the bearing base (1) is provided with a mounting cavity (103); a plurality of groups of ventilation openings (104) are formed at the bottom of the mounting cavity (103); a heat dissipation fan (105) is fixedly installed on the inner side of the ventilation opening (104).

3. The low noise screw chiller of claim 1, wherein: the loader (2) further comprises a loading device (2) and further comprises a mounting bottom piece (201), a limiting block (202), a sliding rod (203), a return spring (204), a fixed bottom block (205) and a steel wire rope (206); the mounting bottom piece (201) is mounted at the bottom of the bearing base (1); the bottom of the installation bottom piece (201) is integrally provided with the installation bottom piece (201); a sliding rod (203) is fixedly arranged on the inner side of the mounting bottom piece (201); a return spring (204) is fixedly arranged on the outer side of the sliding rod (203); a fixed bottom block (205) is fixedly arranged at the bottom of the sliding rod (203); and a plurality of groups of steel wire ropes (206) are fixedly arranged on the outer side of the fixed bottom block (205).

4. The low noise screw chiller of claim 1, wherein: the buffer rod (3) further comprises an installation block (301), a buffer spring (302), a sliding ring (303), a positioning block (304) and a spring support piece (305); a plurality of groups of mounting blocks (301) are fixedly mounted on the outer side of the buffer rod (3); buffer springs (302) are fixedly arranged on two opposite sides of the buffer rod (3); sliding rings (303) are fixedly arranged on two sides of the buffer rod (3); positioning blocks (304) are integrally arranged on two sides of the sliding ring (303), and the cross section of each positioning block (304) is T-shaped; a spring support piece (305) is fixedly arranged on the inner side of the positioning block (304), and a support piece spring support piece (305) is fixedly arranged on the inner side of the buffer groove (101).

5. The low noise screw chiller of claim 1, wherein: the mounting plate (4) further comprises a sliding lug (401), a movable column (402), a positioning spring (403) and a load-carrying sliding block (404); a plurality of groups of sliding lugs (401) are fixedly arranged at the top of the mounting plate (4); a movable column (402) is fixed on the inner side of the sliding convex block (401); positioning springs (403) are fixedly arranged on two sides of the movable column (402); the outer side of the movable column (402) is movably provided with a load sliding block (404), and the top of the load sliding block (404) is fixedly provided with an installation frame (5).

6. The low noise screw chiller of claim 1, wherein: the blocking and sound-absorbing mechanism (6) further comprises a blocking and sound-absorbing plate (601), a fixing piece (602), a positioning protrusion (603), an observation plate (604), a positioning bump (605) and a mounting groove (606); a plurality of groups of fixing pieces (602) are fixedly arranged on the outer side of the blocking sound-absorbing plate (601); a plurality of groups of positioning protrusions (603) are fixedly arranged on the outer side of the blocking sound-absorbing plate (601); an observation plate (604) is arranged on one side of the blocking acoustic board (601) through a rotating shaft; the bottom of the blocking sound-absorbing plate (601) is integrally provided with a positioning lug (605), and the positioning lug (605) is arranged in the fixing groove (102); the top of the separation sound-absorbing board (601) is provided with a mounting groove (606), and the cross section of the mounting groove (606) is in a shape like a Chinese character 'hui'.

7. The low noise screw chiller of claim 1, wherein: the blocking sound absorption cover (7) further comprises a locking piece (701), a locking block (702), an installation bump (703), a collection cover (704) and a discharge pipe (705); locking pieces (701) are fixedly arranged on two sides of the sound blocking and absorbing cover (7), and the locking pieces (701) are arranged on the inner sides of the fixing pieces (602); a locking block (702) is fixedly arranged at the bottom of the locking piece (701); the bottom of the blocking sound absorption cover (7) is integrally provided with an installation bump (703), and the installation bump (703) is fixedly installed inside the installation groove (606); a plurality of groups of collecting covers (704) are fixedly arranged at the bottom of the blocking sound-absorbing cover (7); the top of the collecting cover (704) is fixedly provided with a discharge pipe (705).