Centrifugal pump capable of resisting low temperature

Abstract

The utility model relates to the technical field of pumps, and discloses a low-temperature-resistant centrifugal pump which comprises a bottom plate, a pump body is fixedly connected to the top end face of the bottom plate, and a heat preservation assembly is arranged on the top end face of the bottom plate. According to the centrifugal pump capable of resisting the low temperature, the heat pipe heats air in the shell, the motor drives the fan to rotate, the fan blows heat dissipated by the heating pipe into the shell to heat the operation environment of the pump body, and therefore normal operation of the centrifugal pump is guaranteed, and when the internal temperature of the shell is higher than a set value, the memory alloy piece deforms, and the temperature of the shell is lowered. The centrifugal pump can work normally in high-temperature and low-temperature environments, the situation of overheating or insufficient cooling is avoided, the sealing degree of the memory alloy piece filled with the rubber ring and the interior of the shell is improved, the heat preservation effect of the shell is ensured, the shifting rod pushes the hinge rod and the spoiler to rotate, air blown upwards by the fan is disturbed, and heat accumulation in a specific area is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pumps, in particular to a centrifugal pump capable of resisting low temperatures. Background Art

[0002] Centrifugal pumps are designed based on the principle of centrifugal force. The high-speed rotating impeller blades drive the water to rotate and throw the water out, thereby achieving the purpose of transportation. There are many types of centrifugal pumps, which can be divided into civil and industrial pumps based on their use; based on the conveying medium, they can be divided into clean water pumps, impurity pumps, corrosion-resistant pumps, etc. The existing horizontal centrifugal pumps are limited in suction height, resulting in the water pump installation position being very low. During use, they cannot be used in a low temperature environment, which affects the normal use of the centrifugal pump. Therefore, it is necessary to propose a new type of low-temperature resistant horizontal centrifugal pump.

[0003] According to a publicly disclosed low-temperature resistant horizontal centrifugal pump (announcement number: CN216008906U), the above application includes a base, a device body is fixedly installed on the top of the base, a motor is installed on one side of the device body through a connecting shaft, an insulation shell is fixedly installed on both sides of the outer wall of the device body, a heat conduction mechanism for heating the device body is installed in the insulation shell, a number of uniformly sized heat dissipation holes are opened in the inner side wall of the insulation shell, and a heat dissipation mechanism for evacuating a large amount of heat generated inside the insulation shell is installed inside the insulation shell.

[0004] However, the above-mentioned centrifugal pump only uses a heating device to heat the centrifugal pump. The setting of the heat dissipation holes requires the continuous operation of the heating device to ensure the normal use of the centrifugal pump in a low-temperature environment. The heating device consumes a lot of energy, especially in an extremely cold environment. This not only increases energy consumption, but may also make the equipment operating cost higher. In view of this, we propose a centrifugal pump that can withstand low temperatures. Utility Model Content

[0005] The purpose of the present utility model is to provide a low-temperature resistant centrifugal pump to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a low-temperature resistant centrifugal pump, comprising a bottom plate, a pump body being fixedly connected to the top end surface of the bottom plate, and a heat-insulating assembly being provided on the top end surface of the bottom plate, the heat-insulating assembly comprising:

[0007] A shell, the shell being fixedly connected to the top end surface of the bottom plate, the shell being hollow, the inner wall of the shell being fixedly connected to a corrugated plate, the side wall of the shell being provided with a heat dissipation groove, and the inner wall of the shell being fixedly connected to a rubber ring;

[0008] A memory alloy sheet, wherein the inner wall of the housing is fixedly connected to a vertical plate, the side wall of the vertical plate is fixedly connected to a spring, and the memory alloy sheet is fixedly connected to an end of the spring away from the vertical plate;

[0009] A heating tube is fixedly connected to the top end surface of the base plate, the top end surface of the base plate is fixedly connected to a mounting bracket, the bottom of the mounting bracket is fixedly connected to a motor, and a fan is fixedly connected to the output shaft of the motor.

[0010] Preferably, a baffle is fixedly connected to the side wall of the shell, and the top of the baffle is movably connected to the memory alloy sheet, and the baffle supports the memory alloy sheet.

[0011] Preferably, a guide block is fixedly connected to the inner wall of the shell, a guide plate is fixedly connected to the inner wall of the shell, the guide plates are arranged on the upper and lower sides of the heat dissipation slot, and the guide block is located on a side of the shell away from the heat dissipation slot.

[0012] Preferably, the memory alloy sheet is movably connected to the rubber ring. The memory alloy sheet is a nickel-titanium-based sheet that can memorize both high-temperature and low-temperature shapes. When the temperature inside the shell is higher than the set value, the memory alloy sheet deforms, thereby connecting the heat dissipation groove to the inside and outside of the shell, and dissipating the heat inside the shell through the heat dissipation groove.

[0013] Preferably, the inner top surface of the shell is rotatably connected to a rotating shaft, the side wall of the rotating shaft is fixedly connected to a spoiler, the side wall of the rotating shaft is fixedly connected to a coil spring, the end of the coil spring away from the rotating shaft is fixedly connected to the top end surface of the shell, and the side wall of the rotating shaft is fixedly connected to a hinged rod.

[0014] Preferably, the output shaft of the motor is fixedly connected to a toggle rod, and the toggle rod is movably connected to the hinge rod. The toggle rod pushes the hinge rod and the spoiler to rotate, disrupting the wind blown upward by the fan.

[0015] Compared with the prior art, the present invention provides a low temperature resistant centrifugal pump with the following features:

[0016] Beneficial effects:

[0017] 1. This low-temperature resistant centrifugal pump heats the air in the shell through the memory alloy sheet, bellows and fan. The heating tube drives the fan to rotate, and the fan blows the heat emitted by the heating tube into the shell, heating the operating environment of the pump body, thereby ensuring the normal operation of the centrifugal pump. When the internal temperature of the shell is higher than the set value, the memory alloy sheet deforms to ensure that the centrifugal pump can work normally in high and low temperature environments, avoiding overheating or insufficient cooling. The rubber ring fills the memory alloy sheet and the inside of the shell to ensure the sealing effect of the shell.

[0018] 2. The low-temperature-resistant centrifugal pump is equipped with a spoiler and a hinged rod. The toggle rod pushes the hinged rod and the spoiler to rotate, disrupting the wind blown upward by the fan, so that the wind flow is no longer direct, concentrated and powerful. This can prevent the airflow from being too concentrated or too strong, causing vortices or uneven airflow distribution, making the wind flow more evenly distributed, avoiding heat accumulation in specific areas, and reducing the risk of local overheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the shell of the utility model;

[0021] Figure 3 For this utility model Figure 2 Schematic diagram of the structure of the middle A area;

[0022] Figure 4 This is a schematic diagram of the fan structure of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the spoiler of the utility model;

[0024] Figure 6 This is a schematic diagram of the assembly of the memory alloy sheet of the present invention.

[0025] In the figure: 1. Base plate; 2. Pump body; 4. Insulation assembly; 401. Shell; 402. Corrugated plate; 403. Heat sink; 404. Rubber ring; 405. Baffle; 406. Vertical plate; 407. Spring; 408. Memory alloy sheet; 409. Heating tube; 410. Mounting bracket; 411. Motor; 412. Fan; 5. Guide block; 6. Guide plate; 7. Toggle lever; 8. Rotating shaft; 9. Spoiler; 10. Coil spring; 11. Articulated rod. DETAILED DESCRIPTION

[0026] like Figures 1-6 As shown, the utility model provides a technical solution: a low-temperature resistant centrifugal pump, comprising a base plate 1, the top end surface of the base plate 1 is fixedly connected to a pump body 2, the top end surface of the base plate 1 is provided with a thermal insulation component 4, and the thermal insulation component 4 includes a shell 401, a corrugated plate 402, a heat dissipation groove 403, a rubber ring 404, a baffle 405, a vertical plate 406, a spring 407, a memory alloy sheet 408, a heating tube 409, a mounting frame 410, a motor 411, and a fan 412.

[0027] In an embodiment of the utility model, the shell 401 is fixedly connected at the top end face of the bottom plate 1, the shell 401 is hollowly arranged, the inner wall of the shell 401 is fixedly connected with the corrugated plate 402, the lateral wall of the shell 401 is provided with the heat dissipation groove 403, the inner wall of the shell 401 is fixedly connected with the rubber ring 404.

[0028] The inner wall of the shell 401 is fixedly connected with the vertical plate 406, the lateral wall of the vertical plate 406 is fixedly connected with the spring 407, the memory alloy sheet 408 is fixedly connected at the end of the spring 407 away from the vertical plate 406, the lateral wall of the shell 401 is fixedly connected with the baffle 405, the top of the baffle 405 is movably connected with the memory alloy sheet 408, the baffle 405 supports the memory alloy sheet 408, the memory alloy sheet 408 is movably connected with the rubber ring 404, the memory alloy sheet 408 is made of nickel-titanium base plate material with two shapes of high temperature and low temperature, when the temperature in the shell 401 is higher than the set value, the memory alloy sheet 408 deforms, thereby making the heat dissipation groove 403 communicate the inside and outside of the shell 401, and the heat in the shell 401 is dissipated through the heat dissipation groove 403.

[0029] The heating pipe 409 is fixedly connected at the top end face of the bottom plate 1, the top end face of the bottom plate 1 is fixedly connected with the mounting frame 410, the bottom of the mounting frame 410 is fixedly connected with the motor 411, the output shaft of the motor 411 is fixedly connected with the fan 412, the inner wall of the shell 401 is fixedly connected with the guide block 5, the inner wall of the shell 401 is fixedly connected with the guide plate 6, the guide plate 6 is arranged at the upper and lower sides of the heat dissipation groove 403, and the guide block 5 is located at the side of the shell 401 away from the heat dissipation groove 403.

[0030] The heating pipe 409 heats the air in the shell 401, the motor 411 drives the fan 412 to rotate, and the fan 412 blows the heat dissipated by the heating pipe 409 to the inside of the shell 401, so that the operating environment of the pump body 2 is heated, thereby ensuring the normal operation of the centrifugal pump, when the internal temperature of the shell 401 is higher than the set value, the memory alloy sheet 408 deforms, thereby making the heat dissipation groove 403 communicate the inside and outside of the shell 401, and the heat in the shell 401 is dissipated through the heat dissipation groove 403, if the temperature decreases and is lower than the set value, the memory alloy sheet 408 deforms back to the original shape, the heat dissipation groove 403 is shielded again, and the centrifugal pump can work normally in the high-temperature and low-temperature environments, avoiding the conditions of overheating or insufficient cooling, the rubber ring 404 fills the sealing degree between the memory alloy sheet 408 and the inside of the shell 401, ensures the heat preservation effect of the shell 401, and meanwhile, the shell 401 is hollowly arranged, the inner wall of the shell 401 is fixedly connected with the corrugated plate 402, a plurality of air layers are formed, the air layers play a role of heat insulation, heat transfer is reduced, heat diffusion is prevented, and the heat insulation property of the shell 401 is increased.

[0031] In addition, the inner top surface of the shell 401 is rotationally connected with a rotating shaft 8, the side wall of the rotating shaft 8 is fixedly connected with a spoiler 9, the side wall of the rotating shaft 8 is fixedly connected with a coil spring 10, one end of the coil spring 10 away from the rotating shaft 8 is fixedly connected with the top end surface of the shell 401, the side wall of the rotating shaft 8 is fixedly connected with a hinged rod 11, the output shaft of the motor 411 is fixedly connected with a pushing rod 7, the pushing rod 7 is movably connected with the hinged rod 11, the pushing rod 7 pushes the hinged rod 11 and the spoiler 9 to rotate, the wind blown upward by the fan 412 is disturbed, when the rotating shaft 8 and the spoiler 9 rotate, the hinged rod 11 deviates from the rotating shaft 8 due to centrifugal force, at this time, the pushing rod 7 cannot contact with the hinged rod 11, the coil spring 10 elastically deforms when rotating, so that the rotating shaft 8 and the spoiler 9 reversely rotate after the rotation stops, so that the wind flow is no longer direct, concentrated and powerful, so that the airflow is too concentrated or too strong, vortex or uneven airflow distribution is avoided, so that the wind flow is more evenly distributed, and the risk of local overheating is reduced.

[0032] In the utility model, when using, the heating pipe 409 heats the air in the shell 401, the motor 411 drives the fan 412 to rotate, the fan 412 blows the heat emitted by the heating pipe 409 to the inside of the shell 401, and the operating environment of the pump body 2 is heated, the output shaft of the motor 411 is fixedly connected with a pushing rod 7, the pushing rod 7 is movably connected with a hinged rod 11, and the pushing rod 7 pushes the hinged rod 11 and the spoiler 9 to rotate, so that the wind blown upward by the fan 412 is disturbed.

[0033] The utility model has been described in detail above, but some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit of the utility model are within the protection scope of the utility model.

Claims

1. A low-temperature resistant centrifugal pump, comprising a base plate (1), the top end surface of the base plate (1) being fixedly connected to a pump body (2), characterized in that: The top end surface of the bottom plate (1) is provided with a heat-insulating component (4), and the heat-insulating component (4) comprises: A shell (401), the shell (401) is fixedly connected to the top end surface of the bottom plate (1), the shell (401) is hollow, the inner wall of the shell (401) is fixedly connected to a corrugated plate (402), the side wall of the shell (401) is provided with a heat dissipation groove (403), and the inner wall of the shell (401) is fixedly connected to a rubber ring (404); A memory alloy sheet (408), wherein the inner wall of the housing (401) is fixedly connected to a vertical plate (406), the side wall of the vertical plate (406) is fixedly connected to a spring (407), and the memory alloy sheet (408) is fixedly connected to an end of the spring (407) away from the vertical plate (406); A heating tube (409) is fixedly connected to the top end surface of the base plate (1), the top end surface of the base plate (1) is fixedly connected to a mounting bracket (410), the bottom of the mounting bracket (410) is fixedly connected to a motor (411), and a fan (412) is fixedly connected to the output shaft of the motor (411).

2. A low-temperature resistant centrifugal pump according to claim 1, characterized in that: A baffle (405) is fixedly connected to the side wall of the shell (401), and the top of the baffle (405) is movably connected to the memory alloy sheet (408).

3. The low-temperature resistant centrifugal pump according to claim 1, characterized in that: A guide block (5) is fixedly connected to the inner wall of the shell (401), a guide plate (6) is fixedly connected to the inner wall of the shell (401), the guide plates (6) are arranged on the upper and lower sides of the heat dissipation slot (403), and the guide block (5) is located on a side of the shell (401) away from the heat dissipation slot (403).

4. The low-temperature resistant centrifugal pump according to claim 1, characterized in that: The memory alloy sheet (408) is movably connected to the rubber ring (404), and the memory alloy sheet (408) is a nickel-titanium-based plate that can memorize both high-temperature and low-temperature shapes.

5. The low-temperature resistant centrifugal pump according to claim 1, characterized in that: The inner top surface of the housing (401) is rotatably connected to a rotating shaft (8), a spoiler (9) is fixedly connected to the side wall of the rotating shaft (8), a coil spring (10) is fixedly connected to the side wall of the rotating shaft (8), an end of the coil spring (10) away from the rotating shaft (8) is fixedly connected to the top end surface of the housing (401), and a hinge rod (11) is fixedly connected to the side wall of the rotating shaft (8).

6. The low-temperature resistant centrifugal pump according to claim 5, characterized in that: The output shaft of the motor (411) is fixedly connected to a toggle rod (7), and the toggle rod (7) is movably connected to the hinge rod (11).

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