Centrifugal water chilling unit

Abstract

The utility model relates to the technical field of water chilling units, in particular to a centrifugal water chilling unit. According to the technical scheme, the device comprises a suction pipe, a butt-joint plate, a pump shell, a motor, a rotating shaft and a sleeve, the output end of the motor is provided with the rotating shaft rotationally installed in the pump shell, the outer wall of the rotating shaft is sleeved with an impeller rotationally installed in the pump shell, the butt-joint plate is arranged at one end of the pump shell, and one end of the butt-joint plate is communicated with the suction pipe; a filter cover is fixedly arranged in the suction pipe, a sleeve is arranged in the filter cover, one end of the sleeve is communicated with a connecting pipe, and one end of the pump shell is communicated with a conveying pipe. The filter assembly filter cover is arranged at the suction end of the pump body to intercept solids, clean water is conveyed through the sleeve to wash the inner wall of the sleeve, and the problem that impurities in water enter the filter assembly after passing through the pump body for a circle in the conveying process due to the fact that the pump body is not provided with a filter structure is solved. And the inside of the pump body is still abraded.

Description

Technical Field

[0001] The utility model relates to the technical field of water chillers, in particular to a centrifugal water chiller. Background Art

[0002] Centrifugal chillers are used in industrial refrigeration and air conditioning systems. They primarily utilize compressor power to circulate refrigerant, absorbing heat and dissipating it to the surrounding environment, thereby achieving cooling. They are commonly used in environments requiring large-scale air conditioning and refrigeration, such as large buildings, commercial facilities, and medical institutions.

[0003] Filtration is crucial in centrifugal chillers because the refrigerant and circulating water in the system may be affected by external impurities or contaminants, such as dust, rust, silt, and particles. These impurities can adversely affect equipment components, but the pump itself lacks a filtration structure. As a result, impurities in the water during transportation can pass through the pump for a period of time before entering the filtration components, causing wear and tear on the pump's interior. Therefore, we propose a centrifugal chiller to address this existing problem. Utility Model Content

[0004] The purpose of the utility model is to propose a centrifugal chiller to solve the problems existing in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a centrifugal chiller, comprising a suction pipe, a docking plate, a pump casing, a motor, a rotating shaft and a sleeve, the output end of the motor is provided with a rotating shaft rotatably mounted inside the pump casing, the outer wall of the rotating shaft is sleeved with an impeller rotatably mounted inside the pump casing, one end of the pump casing is provided with a docking plate, one end of the docking plate is connected and installed with a suction pipe, a filter cover is fixed inside the suction pipe, a sleeve is provided inside the filter cover, one end of the sleeve is connected and installed with a connecting pipe that passes through the suction pipe, and one end of the pump casing is connected and installed with a delivery pipe.

[0006] Preferably, the lower end of the suction pipe is connected to a discharge pipe, and a sealing cover is threadedly sleeved on the outer wall of the discharge pipe. The discharge pipe delivers the fluid sucked and delivered by the pump casing.

[0007] Preferably, the sealing cover is provided with a fixing rod at the upper end thereof, and a piston is provided at the upper end thereof which is slidably mounted inside the discharge pipe, and the piston is located at the connection point between the discharge pipe and the suction pipe. The piston closes the connection point between the discharge pipe and the suction pipe, and the opening and closing of the discharge pipe is controlled by the sealing cover.

[0008] Preferably, a docking seat is provided at one end of the rotating shaft, and a docking block is provided at one end of the sleeve, wherein the docking block is engaged with the docking seat. The sleeve is docked with the docking seat via the docking block, so that the rotational force of the motor output end is applied to the sleeve through the rotating shaft.

[0009] Preferably, a bearing bracket is provided inside the suction pipe, one end of the sleeve is rotatably mounted inside the bearing bracket, and the outer wall of the bearing bracket is arc-shaped. The sleeve is rotatably supported inside the bearing bracket, and the arc-shaped outer wall reduces resistance to water flow when water flows through.

[0010] Preferably, the inner wall of the filter cover is provided with support rods distributed in a circular array, one end of each support rod being connected to the inner wall of the suction pipe. The support rods support the inner wall of the filter cover and enhance the strength of the filter cover when the filter cover is impacted by water flow.

[0011] Preferably, the docking plate is mounted in a chiseled manner on the pump housing. The outer wall of the pump housing is provided with hydraulic rods distributed in an annular array. The telescopic ends of the hydraulic rods are provided with connecting rods. Both the docking plate and the outer wall of the pump housing are sleeved with annularly distributed ferrules. The upper ends of the ferrules are provided with rotating seats, and the connecting rods are rotatably inserted into the rotating seats. The docking plate is docked with the pump housing, and the driving force of the telescopic ends of the hydraulic rods is applied to the ferrules via the connecting rods, thereby clamping and closing the docking plate and the pump housing.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1. The utility model drives the impeller to rotate inside the pump casing through a motor, and generates centrifugal force through rotation. The centrifugal force generated by the rotating impeller is used to push the fluid, thereby drawing the liquid from the low-pressure area and transporting it to the high-pressure area through a pipeline. During use, a filter component is provided at the input end of the pump body to prevent solid matter from entering the pump body. At the same time, the filter component can be automatically cleaned, which is convenient to use and effectively protects the centrifugal pump in the centrifugal chiller. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main three-dimensional structure of the utility model;

[0015] Figure 2 This is a bottom-up three-dimensional structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the main cross-sectional three-dimensional structure of the pump casing of the present utility model;

[0017] Figure 4 This is a schematic diagram of the main cross-sectional three-dimensional structure of the suction pipe of the present invention;

[0018] Figure 5 This is a schematic diagram of the main three-dimensional structure of the ferrule of the present invention.

[0019] Figure numerals: 1, suction pipe; 2, discharge pipe; 3, docking plate; 4, ferrule; 5, pump casing; 6, motor; 7, delivery pipe; 8, sealing cover; 9, piston; 10, sleeve; 11, impeller; 12, bearing bracket; 13, rotating shaft; 14, filter cover; 15, support rod; 16, fixing rod; 17, through hole; 18, docking block; 19, docking seat; 20, rotating seat; 21, connecting rod; 22, hydraulic rod; 23, connecting pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] like Figure 1-Figure 5 As shown, the centrifugal chiller proposed by the present invention includes a suction pipe 1, a docking plate 3, a pump casing 5, a motor 6, a rotating shaft 13 and a sleeve 10. The output end of the motor 6 is provided with a rotating shaft 13 rotatably mounted inside the pump casing 5. The outer wall of the rotating shaft 13 is sleeved with an impeller 11 rotatably mounted inside the pump casing 5. A docking plate 3 is provided at one end of the pump casing 5. The suction pipe 1 is connected and installed at one end of the docking plate 3. A filter cover 14 is fixed inside the suction pipe 1. A sleeve 10 is provided inside the filter cover 14. A connecting pipe 23 that passes through the suction pipe 1 is connected and installed at one end of the sleeve 10. The outer wall of the sleeve 10 is provided with through holes 17 distributed at equal intervals. A delivery pipe 7 is connected and installed at one end of the pump casing 5.

[0022] The lower end of the suction pipe 1 is connected to the discharge pipe 2, and the outer wall of the discharge pipe 2 is threadedly sleeved with a sealing cover 8;

[0023] The upper end of the sealing cover 8 is provided with a fixing rod 16, and the upper end of the fixing rod 16 is provided with a piston 9 slidably mounted inside the discharge pipe 2. The piston 9 is located at the connection point between the discharge pipe 2 and the suction pipe 1;

[0024] A docking seat 19 is provided at one end of the rotating shaft 13, and a docking block 18 is provided at one end of the sleeve 10. The docking block 18 is engaged with the docking seat 19;

[0025] A bearing bracket 12 is provided inside the suction pipe 1, and one end of the sleeve 10 is rotatably mounted inside the bearing bracket 12, and the outer wall of the bearing bracket 12 is in an arc shape;

[0026] The inner wall of the filter cover 14 is provided with support rods 15 distributed in a circular array, and one end of the support rod 15 is connected to the inner wall of the suction pipe 1;

[0027] The docking plate 3 is fitted with the pump housing 5. The outer wall of the pump housing 5 is provided with hydraulic rods 22 distributed in a circular array. The telescopic ends of the hydraulic rods 22 are provided with connecting rods 21. The docking plate 3 and the outer walls of the pump housing 5 are both sleeved with ferrules 4 distributed in a circular array. The upper end of the ferrule 4 is provided with a rotating seat 20. The connecting rod 21 is rotatably inserted into the rotating seat 20.

[0028] Based on the implementation steps of Example 1: the docking plate 3 is docked with the pump casing 5, so that the docking plate 3 and the pump casing 5 are embedded, the hydraulic rod 22 drives the connecting rod 21 to be clamped on the outer wall of the connection between the docking plate 3 and the pump casing 5, thereby connecting the docked pump casing 5 and the docking plate 3. Because the connecting rod 21 is rotatably installed with the clamping sleeve 4, it can be rotated after being removed from the outer wall of the docking plate 3, which facilitates the disassembly and assembly of the docking plate 3 and the pump casing 5. The motor 6 drives the impeller 11 to rotate, and the impeller 11 sucks and transports the liquid. The refrigerant used for circulation is usually water to achieve heat transfer and cooling. After the cooling water absorbs heat through the evaporator, it is sent to the centrifugal pump in the centrifugal chiller, and then is sent back to the evaporator through the network pipeline to complete the circulation process;

[0029] It is worth noting that the rotating shaft 13 and the filter cover 14 are rotatably installed through the sliding sleeve. The sliding sleeve is a sealing ring, which ensures the sealing of the rotating part during rotation. In the process of liquid transportation, water flows through the filter cover 14 to filter the water, thereby preventing solid matter in the water from entering the interior of the centrifugal pump and causing wear of the internal components of the pump body. At the same time, impurities and pollutants can easily cause the internal components of the equipment to be blocked or damaged, resulting in reduced refrigeration efficiency and unstable system operation. The filtering structure can effectively prevent impurities from entering the interior of the equipment, reduce equipment wear, extend equipment life, avoid equipment damage, and reduce system maintenance and repair costs.

[0030] Because the rotating shaft 13 drives the sleeve 10 to rotate, when the connecting pipe 23 is connected to the sleeve 10 and clean water is introduced, the clean water is sprayed outward through the through hole 17, and the sprayed water flow rotates to clean the solid matter adhered to the outer wall of the filter cover 14. The rotating sealing cover 8 drives the piston 9 to move out of the discharge pipe 2 through the fixed rod 16. The discharge pipe 2 is opened, and the cleaned dirt is transported to the outside through the discharge pipe 2, ensuring stable filtration of water by the filter cover 14.

[0031] The above specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A centrifugal chiller comprising a suction pipe (1), a docking plate (3), a pump housing (5), a motor (6), a rotating shaft (13) and a sleeve (10), characterized in that: The output end of the motor (6) is provided with a rotating shaft (13) rotatably mounted inside the pump housing (5); the outer wall of the rotating shaft (13) is sleeved with an impeller (11) rotatably mounted inside the pump housing (5); a docking plate (3) is provided at one end of the pump housing (5); a suction pipe (1) is connected and installed at one end of the docking plate (3); a filter cover (14) is fixed inside the suction pipe (1); a sleeve (10) is provided inside the filter cover (14); a connecting pipe (23) passing through the suction pipe (1) is connected and installed at one end of the sleeve (10); the outer wall of the sleeve (10) is provided with through holes (17) distributed at equal intervals; and a delivery pipe (7) is connected and installed at one end of the pump housing (5).

2. A centrifugal chiller according to claim 1, characterized in that: The lower end of the suction pipe (1) is connected to a discharge pipe (2) and a sealing cover (8) is threadedly sleeved on the outer wall of the discharge pipe (2).

3. A centrifugal chiller according to claim 2, characterized in that: The upper end of the sealing cover (8) is provided with a fixing rod (16), and the upper end of the fixing rod (16) is provided with a piston (9) slidably mounted inside the discharge pipe (2), and the piston (9) is located at the connection point between the discharge pipe (2) and the suction pipe (1).

4. A centrifugal chiller according to claim 1, characterized in that: One end of the rotating shaft (13) is provided with a docking seat (19), and one end of the sleeve (10) is provided with a docking block (18), and the docking block (18) is engaged and docked with the docking seat (19).

5. The centrifugal chiller according to claim 1, characterized in that: A bearing bracket (12) is provided inside the suction pipe (1), one end of the sleeve (10) is rotatably mounted inside the bearing bracket (12), and the outer wall of the bearing bracket (12) is in an arc shape.

6. The centrifugal chiller according to claim 1, characterized in that: The inner wall of the filter cover (14) is provided with support rods (15) distributed in a ring array, and one end of the support rods (15) is connected to the inner wall of the suction pipe (1).

7. The centrifugal chiller according to claim 1, characterized in that: The docking plate (3) is fitted with the pump housing (5), the outer wall of the pump housing (5) is provided with hydraulic rods (22) distributed in an annular array, the telescopic ends of the hydraulic rods (22) are provided with connecting rods (21), the docking plate (3) and the outer wall of the pump housing (5) are both sleeved with ferrules (4) distributed in an annular array, the upper end of the ferrule (4) is provided with a rotating seat (20), and the connecting rod (21) is rotatably inserted into the rotating seat (20).

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