Protective device of low-temperature screw parallel unit

Abstract

The utility model relates to the technical field of screw parallel units, in particular to a protective device of a low-temperature screw parallel unit, which comprises a bottom plate, a protective cover for protecting the low-temperature screw parallel unit is arranged on the bottom plate, and two side walls, close to the bottom, of the protective cover are connected with the bottom plate through two groups of quick-assembly components. Screen windows are arranged on the two side walls of the protective cover, dustproof assemblies for active heat dissipation are arranged on the outer sides of the screen windows, two sets of heat dissipation fans used for accelerating air circulation are installed on the top of the protective cover, each dustproof assembly comprises four driving assemblies fixedly connected to the inner wall of the protective cover, and cover plates capable of covering the outer sides of the screen windows are fixedly arranged on the outer sides of the driving assemblies. According to the protective device of the low-temperature screw parallel unit, after the temperature in the protective cover rises, the cover plate can be automatically pushed open, meanwhile, the heat dissipation fan is triggered to work, air in the protective cover can circulate, the active heat dissipation effect is achieved, and dust can be prevented from entering the protective device when the protective device does not run.

Description

Technical Field

[0001] The utility model relates to the technical field of screw parallel units, in particular to a protective device for low-temperature screw parallel units. Background Art

[0002] The existing low-temperature screw parallel units are usually placed directly on the frame and protected by brackets on all sides. The protection effect is poor and dust is easy to fall. To solve this problem, a large protective cover is usually used to cover the entire unit. However, the unit will generate a lot of heat during operation. When the protective cover covers the unit, it will greatly affect the heat dissipation, causing the unit's operating temperature to increase, affecting the unit's service life. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides a protective device for a low-temperature screw parallel unit, which solves the technical problem that the heat dissipation of the unit is affected by using a protective cover to protect the unit.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a protective device for a low-temperature screw parallel unit, comprising a bottom plate, a protective cover for protecting the low-temperature screw parallel unit is arranged on the bottom plate, two side walls of the protective cover close to the bottom are connected to the bottom plate through two groups of quick-install components, screens are arranged on both side walls of the protective cover, dust-proof components for active heat dissipation are arranged on the outer side of the screens, and two groups of cooling fans for accelerating air circulation are installed on the top of the protective cover;

[0005] The dustproof component comprises four driving components fixedly connected to the inner wall of the protective cover, and a cover plate which can cover the outer side of the gauze is fixedly arranged on the outer side of the driving component.

[0006] Preferably, the driving assembly includes a metal sleeve fixedly connected to the inner wall of the protective cover, the metal sleeve is provided with evaporative liquid and is movably connected to a piston, the piston is fixedly connected to one end of a movable rod, the movable rod extends to the outside of the metal sleeve and is movably connected to the side wall of the protective cover, and the other end of the movable rod is fixedly provided with a cover plate, which is located on the outside of the screen window.

[0007] Preferably, a fixing frame fixedly connected to the outer wall of the protective cover is provided above the cover plate, and a push-type switch electrically connected to the heat dissipation fan is installed on the inner side of the fixing frame.

[0008] Preferably, the front side of the protective cover is open and hinged with a movable plate, the inner wall of the movable plate is hinged with the telescopic shafts of the two groups of hydraulic rods, and the two groups of hydraulic rods are rotatably mounted on the inner wall of the protective cover respectively.

[0009] Preferably, an outer baffle installed on the top of the protective cover is provided above the heat dissipation fan, and the top of the outer baffle is in a grid shape.

[0010] Preferably, the quick-release assembly includes a positioning column fixedly connected to the base plate and a positioning sleeve fixedly connected to the side wall of the protective cover, the positioning sleeve is sleeved on the positioning column, a movable hole is opened on the top of the positioning column, two locking blocks are slidably arranged in the movable hole, and the two locking blocks are elastically connected by a spring.

[0011] By means of the above technical solution, the utility model provides a protective device for a low-temperature screw parallel unit, which has at least the following beneficial effects:

[0012] 1. The protective device of the low-temperature screw parallel unit is equipped with a screen, a cooling fan and a dustproof component. When the temperature inside the protective cover rises, the cover can be automatically pushed open and the cooling fan can be triggered to work at the same time, so that the air in the protective cover can circulate, which has the effect of active heat dissipation and can prevent dust from entering when not in operation.

[0013] 2. The protective device of the low-temperature screw parallel unit is provided with a movable plate and a hydraulic rod, and the hydraulic rod is used to control the opening or closing of the movable plate, so that it is convenient for maintenance personnel to enter the protective cover and perform maintenance work on the low-temperature screw parallel unit.

[0014] 3. The protective device of the low-temperature screw parallel unit is provided with a quick-install component. After the protective cover is covered on the low-temperature screw parallel unit by a crane, the positioning sleeve can be automatically inserted into the positioning column, and the positioning sleeve can be locked under the action of the locking fastener, thereby automatically completing the fixing work of the protective cover, which can improve the installation efficiency of the protective cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the inner side of the protective cover of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the quick-install assembly of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the dustproof component of the utility model.

[0020] Reference numerals:

[0021] 1. Base plate; 2. Protective cover; 3. Quick-release assembly; 31. Positioning column; 32. Positioning sleeve; 33. Spring; 34. Lock block; 4. Hydraulic rod; 5. Movable plate; 6. Screen window; 7. Cooling fan; 8. Outer baffle; 9. Dustproof assembly; 91. Metal sleeve; 92. Piston; 93. Movable rod; 94. Cover plate; 95. Fixing bracket; 96. Push switch. DETAILED DESCRIPTION

[0022] 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.

[0023] The screw parallel unit has small vibration and low noise due to continuous compression. It is mainly used in some larger cold storages, freezing industry, refrigeration engineering, low-temperature logistics distribution centers, supermarket cold chain and chemical industry, etc. Compared with general refrigeration compressor units, the screw parallel unit connects multiple units in parallel, so the power is naturally larger and the refrigeration effect is better. The low-temperature screw compressor adopts supercooling technology and has a high energy efficiency ratio. When used in winter, it can provide special condensing pressure and oil temperature control. However, the low-temperature screw parallel unit is usually placed directly on the frame and protected by brackets around it. The protection effect is poor and it is easy to fall into dust.

[0024] Embodiment 1:

[0025] Based on the technical defects of the prior art that the protective cover 2 is used to protect the unit and affects the heat dissipation of the unit, please refer to Figure 1-Figure 4The utility model provides a protective device for a low-temperature screw parallel unit. When the temperature inside the protective cover 2 rises, the cover plate 94 can be automatically pushed open, and the cooling fan 7 can be triggered to work at the same time, so that air can circulate in the protective cover 2, which has the effect of active heat dissipation, and can also prevent dust from entering when not in operation. A protective cover 2 for protecting the low-temperature screw parallel unit is provided on the bottom plate 1. The protective cover 2 can cover the entire low-temperature screw parallel unit to improve the protection and dustproofness of the low-temperature screw parallel unit. The two side walls of the protective cover 2 near the bottom are connected to the bottom plate 1 through two sets of quick-install components 3. The protective cover 2 is installed. Afterwards, under the action of the quick-release component 3, the protective cover 2 can be automatically fixed. Screen windows 6 are provided on the two side walls of the protective cover 2. The screen windows 6 can facilitate the entry of air and reduce the entry of dust. The outer side of the screen window 6 is provided with a dust-proof component 9 for active heat dissipation. The dust-proof component 9 can be actively opened when in use to facilitate the entry of air into the protective cover 2 through the screen window 6. When not in use, the cover plate 94 covers the screen window 6 to effectively reduce the entry of dust. Two groups of cooling fans 7 for accelerating air circulation are installed on the top of the protective cover 2; the cooling fan 7 can force the air inside the protective cover 2 to circulate to achieve the purpose of active heat dissipation.

[0026] In order to prevent dust from entering the interior of the protective cover 2 through the screen 6 when not in use, a dustproof component 9 is provided, and the dustproof component 9 includes four drive components fixedly connected to the inner wall of the protective cover 2, and a cover plate 94 that can cover the outside of the screen is fixedly provided on the outside of the drive component; when the unit is in use, the temperature inside the protective cover 2 increases, causing the drive component to be heated, thereby moving the cover plate 94, opening the screen 6, and facilitating air circulation; when the unit is not in use, the drive component is not heated, and the cover plate 94 covers the screen 6, effectively reducing the entry of dust.

[0027] When the unit is in use, in order to enable the cover plate 94 to open automatically, a driving component is set up, which includes a metal sleeve 91 fixedly connected to the inner wall of the protective cover 2, an evaporative liquid is arranged in the metal sleeve 91 and is movably connected to a piston 92, the piston 92 is fixedly connected to one end of a movable rod 93, the movable rod 93 extends to the outside of the metal sleeve 91 and is movably connected to the side wall of the protective cover 2, a cover plate 94 is fixedly arranged at the other end of the movable rod 93, and the cover plate 94 is located on the outside of the screen 6; the metal sleeve 91 transfers heat to the evaporative liquid, the evaporative liquid becomes gas and pushes the piston 92 to move, the piston 92 drives the movable rod 93 to move, and the movable rod 93 drives the cover plate 94 to move, so that the cover plate 94 is opened, and a gap is formed between the cover plate 94 and the screen 6 for air circulation.

[0028] In order to facilitate the automatic control of the operation of the cooling fan 7, a fixing frame 95 fixedly connected to the outer wall of the protective cover 2 is provided above the cover 94, and a push switch 96 electrically connected to the cooling fan 7 is installed on the inner side of the fixing frame 95; when the cover 94 is opened, the push switch 96 can be automatically pressed, thereby allowing the cooling fan 7 to automatically operate.

[0029] When the low-temperature screw parallel unit needs to be repaired, the maintenance personnel need to enter the protective cover 2. To facilitate the entry of the maintenance personnel, the front of the protective cover 2 is open and hinged with a movable plate 5. The inner wall of the movable plate 5 is hinged with the telescopic shafts of two groups of hydraulic rods 4. The two groups of hydraulic rods 4 are rotatably installed on the inner wall of the protective cover 2 respectively; the movable plate 5 is opened by using the hydraulic rods 4 to facilitate the entry of the maintenance personnel.

[0030] To ensure the safe and stable operation of the cooling fan 7, an outer baffle plate 8 installed on the top of the protective cover 2 is provided above the cooling fan 7, and the top of the outer baffle plate 8 is a grid mesh; the grid mesh neither hinders the exhaust of the cooling fan 7 nor prevents foreign matter from affecting the operation of the cooling fan 7.

[0031] According to the embodiment, when the unit is in use, the temperature inside the protective cover 2 rises, causing the metal sleeve 91 to be heated. The metal sleeve 91 transfers the heat to the evaporating liquid, and the evaporating liquid becomes gas and pushes the piston 92 to move. The piston 92 drives the movable rod 93 to move, and the movable rod 93 drives the cover plate 94 to move, so that the cover plate 94 is opened, and a gap is generated between the cover plate 94 and the screen 6 to facilitate air circulation. When the cover plate 94 is opened, the push switch 96 can be automatically pressed to automatically operate the cooling fan 7, so that the air can circulate and bring out the heat, thereby achieving the purpose of active heat dissipation. When the unit is not in use, the drive component is not heated, and the cover plate 94 covers the screen 6 to effectively reduce the entry of dust.

[0032] Embodiment 2:

[0033] Most of the existing protective covers 2 are installed by bolt connection, and the bolt connection requires workers to operate one by one, resulting in low installation efficiency of the protective cover 2. To solve this problem, please refer to Figure 1 and Figure 3 On the basis of the first embodiment, the quick-install component 3 includes a positioning column 31 fixedly connected to the bottom plate 1 and a positioning sleeve 32 fixedly connected to the side wall of the protective cover 2. The positioning sleeve 32 is sleeved on the positioning column 31. A movable hole is opened on the top of the positioning column 31. Two locking blocks 34 are slidably arranged in the movable hole. The two locking blocks 34 are elastically connected by a spring 33. After the protective cover 2 is covered on the outside of the low-temperature screw parallel unit, the positioning sleeve 32 can be automatically inserted into the positioning column 31 to realize the installation and positioning of the protective cover 2.

[0034] According to the embodiment, after the protective cover 2 is covered on the low-temperature screw parallel unit by using a crane, the positioning sleeve 32 can be automatically inserted into the positioning column 31. When the positioning sleeve 32 is inserted into the positioning column 31, the locking block 34 can be automatically squeezed and retracted into the movable hole. When the positioning sleeve 32 is separated from the locking block 34, under the elastic force of the spring 33, the two locking blocks 34 are moved outward and reset, thereby blocking the positioning sleeve 32 from moving upward, realizing the locking of the positioning sleeve 32, thereby automatically completing the fixing work of the protective cover 2, and improving the installation efficiency of the protective cover 2.

[0035] Through the above embodiments, it can be known that the use process of the device is as follows: first, the protective cover 2 is covered on the low-temperature screw parallel unit by a crane, and the positioning sleeve 32 can be automatically inserted into the positioning column 31. When the positioning sleeve 32 is inserted into the positioning column 31, the locking block 34 can be automatically squeezed and retracted into the movable hole. When the positioning sleeve 32 is separated from the locking block 34, the two locking blocks 34 are moved outward and reset under the elastic force of the spring 33, thereby blocking the positioning sleeve 32 from moving upward, realizing the locking of the positioning sleeve 32, and completing the fixing work of the protective cover 2. When the unit is in use, the temperature inside the protective cover 2 rises, causing the metal sleeve 91 is heated, and the metal sleeve 91 transfers the heat to the evaporating liquid. The evaporating liquid becomes gas and pushes the piston 92 to move. The piston 92 drives the movable rod 93 to move, and the movable rod 93 drives the cover plate 94 to move, so that the cover plate 94 is opened, and a gap is generated between the cover plate 94 and the screen window 6 to facilitate air circulation. When the cover plate 94 is opened, the push switch 96 can be automatically pressed to automatically operate the cooling fan 7, so that the air can circulate and bring out the heat, thereby achieving the purpose of active heat dissipation. When the unit is not in use, the drive component is not heated, and the cover plate 94 covers the screen window 6 to effectively reduce the entry of dust.

[0036] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A protective device for a low-temperature screw parallel unit, comprising a bottom plate (1), characterized in that: The bottom plate (1) is provided with a protective cover (2) for protecting the low-temperature screw parallel unit. The two side walls of the protective cover (2) close to the bottom are connected to the bottom plate (1) via two groups of quick-install components (3). Screens (6) are provided on the two side walls of the protective cover (2). The outer side of the screens (6) is provided with a dustproof component (9) for active heat dissipation. Two groups of heat dissipation fans (7) for accelerating air circulation are installed on the top of the protective cover (2); The dustproof component (9) comprises four drive components fixedly connected to the inner wall of the protective cover (2), and a cover plate (94) capable of covering the outer side of the gauze is fixedly provided on the outer side of the drive component.

2. The protective device for the low-temperature screw parallel unit according to claim 1, characterized in that: The driving assembly comprises a metal sleeve (91) fixedly connected to the inner wall of the protective cover (2); an evaporative liquid is arranged in the metal sleeve (91) and is movably connected to a piston (92); the piston (92) is fixedly connected to one end of a movable rod (93); the movable rod (93) extends to the outside of the metal sleeve (91) and is movably connected to the side wall of the protective cover (2); a cover plate (94) is fixedly provided at the other end of the movable rod (93); and the cover plate (94) is located outside the screen window (6).

3. The protective device for the low-temperature screw parallel unit according to claim 2, characterized in that: A fixing frame (95) fixedly connected to the outer wall of the protective cover (2) is provided above the cover plate (94), and a push switch (96) electrically connected to the heat dissipation fan (7) is installed on the inner side of the fixing frame (95).

4. The protective device for the low-temperature screw parallel unit according to claim 1, characterized in that: The front of the protective cover (2) is open and hinged with a movable plate (5), the inner wall of the movable plate (5) is hinged with the telescopic shafts of two groups of hydraulic rods (4), and the two groups of hydraulic rods (4) are rotatably mounted on the inner wall of the protective cover (2).

5. The protective device for the low-temperature screw parallel unit according to claim 1, characterized in that: An outer baffle (8) installed on the top of the protective cover (2) is provided above the heat dissipation fan (7), and the top of the outer baffle (8) is in the shape of a grid.

6. The protective device for the low-temperature screw parallel unit according to claim 1, characterized in that: The quick-install assembly (3) comprises a positioning column (31) fixedly connected to the bottom plate (1) and a positioning sleeve (32) fixedly connected to the side wall of the protective cover (2); the positioning sleeve (32) is sleeved on the positioning column (31); a movable hole is provided at the top of the positioning column (31); two locking blocks (34) are slidably arranged in the movable hole; the two locking blocks (34) are elastically connected via a spring (33).

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