Centrifugal pump with protective device

Abstract

The utility model relates to the field of centrifugal pumps, and discloses a centrifugal pump with a protection device, which comprises an assembly box, a protection mechanism arranged in the assembly box, a centrifugal pump body placed in the assembly box, a support block fixedly connected to the bottom end of the centrifugal pump body, and a placing block arranged on the support block. The outer wall of the placement block is slidably connected with the inner wall of the assembly box, a protection groove is formed in the top end of the placement block, an air pressure bin is formed in the inner wall, outside the protection groove, of the placement block, and baffles are fixedly connected to the top end, close to the periphery, of the placement block. According to the centrifugal pump, through the arrangement of the protection mechanism, it is ensured that when the centrifugal pump inclines due to falling, the expansion degree of the air bag in the moving direction of the centrifugal pump can be increased, and therefore it is ensured that even if the centrifugal pump is impacted, the centrifugal pump can be protected in the moving direction due to expansion of the air bag, damage is not likely to happen, and the service life of the centrifugal pump is prolonged. And the protection effect of the fixed centrifugal pump is achieved.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal pumps, and more particularly to a centrifugal pump with a protective device. Background Technology

[0002] A centrifugal pump is a mechanical device that uses the rotation of an impeller to generate centrifugal force to transport liquids. The high-speed rotating impeller throws the liquid out and generates a pressure difference, thereby achieving continuous liquid transport.

[0003] A search revealed Chinese Patent Publication No. CN221779673U, which discloses a centrifugal pump with a protective device. The pump includes a base plate with a protective frame fixedly welded to it. A cover plate is located at one end of the protective frame. The centrifugal pump body is housed within the inner cavity of the protective frame, with the inlet end of the pump body near the cover plate. Sliding rods are fixedly welded to the four corners of the base plate's bottom wall, and sliding sleeves are slidably connected to the sliding rods. A support pad is fixedly welded to the bottom end of the sliding sleeve, and a buffer spring is fitted onto the surface of the sliding sleeve. This invention, through the cooperation of four sets of sliding rods, sliding sleeves, support pads, and buffer springs at the bottom of the base plate, allows the support pads to slide on the sliding rods when the centrifugal pump is accidentally dropped during transport. This impact force causes the sliding sleeves to slide on the sliding rods, thereby compressing the buffer springs and generating elastic force to buffer the impact force. This reduces the impact force on the base plate, protective plate, and centrifugal pump body, effectively protecting the pump body and providing excellent protection.

[0004] Although the aforementioned application documents can achieve the effect of buffering the impact force, in actual use, when the centrifugal pump is transported and dropped, in addition to being moved downward by gravity, it is also subjected to the force in the original direction of movement. The aforementioned application documents only buffer it in the vertical direction, and the buffering effect in other directions is not good. Therefore, the centrifugal pump is still easily damaged by side impact. To solve the above problems, a centrifugal pump with a protective device is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a centrifugal pump with a protective device, which aims to improve the problem of poor side cushioning effect during the transportation of centrifugal pumps in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a centrifugal pump with a protective device, including an assembly box, a protective mechanism inside the assembly box, a centrifugal pump body placed inside the assembly box, a support block fixedly connected to the bottom end of the centrifugal pump body, a placement block including a placement block, the outer wall of the placement block being slidably connected to the inner wall of the assembly box, a protective groove being provided at the top of the placement block, a pressure chamber being provided on the inner wall of the placement block outside the protective groove, a baffle being fixedly connected to the top of the placement block near its perimeter, an airbag being fixedly connected to the end of the baffle near the middle of the assembly box, a control block being piston-connected to the inner wall of the pressure chamber, a push plate being fixedly connected to the end of the control block near the middle of the assembly box, a force-converting component being provided on the outside of the push plate and inside of the placement block, and a buffer component connecting the bottom end of the placement block to the inner wall of the assembly box.

[0007] As a further description of the above technical solution:

[0008] The force-converting assembly includes a slide groove, which is formed on the inner wall of the placement block located outside the protective groove. A slider is slidably connected to the inner wall of the slide groove. A connecting rod is hinged to the end of the slider near the middle of the assembly box. The end of the connecting rod away from the slider is hinged to the end of the push plate away from the middle of the assembly box. The end of the slider away from the control block is elastically connected to the inner wall of the slide groove by a spring.

[0009] As a further description of the above technical solution:

[0010] The cushioning assembly includes a pneumatic tube, the bottom end of which is hinged to the inner wall of the assembly box. A moving rod is piston-connected to the inner wall of the pneumatic tube, and the upper end of the moving rod is hinged to the bottom end of the placement block.

[0011] As a further description of the above technical solution:

[0012] The end of the control block furthest from the center of the assembly box is elastically connected to the inner wall of the air chamber via a spring.

[0013] As a further description of the above technical solution:

[0014] The protective groove is rectangular in shape, and its length and width are greater than those of the support block.

[0015] As a further description of the above technical solution:

[0016] The number of air pressure chambers is set to four, and the four air pressure chambers are respectively located in the middle of the front, back, left and right directions of the placement block in the protective groove.

[0017] As a further description of the above technical solution:

[0018] The interior of the airbag is connected to the interior of the pressure chamber, and the inner wall of the baffle has a groove that allows the airbag and the pressure chamber to communicate.

[0019] As a further description of the above technical solution:

[0020] The number of chutes is set to eight, and the eight chutes are respectively located on both sides of the four pressure chambers.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by setting up a placement block, protective groove, air pressure chamber, baffle, air bag, control block and push plate, it is ensured that when the centrifugal pump tilts due to a fall, the degree of expansion of the air bag in its direction of movement can be increased, thereby ensuring that even if the centrifugal pump is impacted, it can be protected in the direction of movement due to the expansion of the air bag, so that it is not easily damaged, thus achieving the protection effect of the centrifugal pump.

[0023] 2. In this utility model, by setting up a sliding groove, a slider, a connecting rod, and a spring, it is ensured that when the centrifugal pump experiences lateral movement force, the force in the direction of movement can be transferred to the lateral direction perpendicular to it, thereby alleviating the force of the centrifugal pump movement and preventing damage caused by excessive force when the centrifugal pump moves. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the overall structure of this utility model;

[0025] Figure 2 This is a three-dimensional cross-sectional view of the overall structure of this utility model;

[0026] Figure 3 In this utility model Figure 2 Enlarged schematic diagram of the three-dimensional structure of part A in the middle;

[0027] Figure 4 In this utility model Figure 3 Enlarged schematic diagram of the three-dimensional structure of part B;

[0028] Figure 5 This is a three-dimensional cross-sectional view of the assembly box and its internal structure in this utility model;

[0029] Figure 6 In this utility model Figure 5 Enlarged schematic diagram of the three-dimensional structure of part C.

[0030] Legend:

[0031] 1. Assembly box; 2. Protective mechanism; 3. Centrifugal pump body; 21. Placement block; 22. Protective groove; 23. Pressure chamber; 24. Baffle; 25. Airbag; 26. Control block; 27. Push plate; 210. Spring 1; 28. Force conversion assembly; 29. ​​Buffer assembly; 281. Slide groove; 282. Slider; 283. Connecting rod; 284. Spring 2; 291. Pressure pipe; 292. Moving rod; 4. Support block. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 , Figure 2 and Figure 5 An embodiment of this utility model provides a centrifugal pump with a protective device, including an assembly box 1, which is used to protect the centrifugal pump body 3. The assembly box 1 is provided with a protective mechanism 2 inside, and the centrifugal pump body 3 is placed inside the assembly box 1. A support block 4 is fixedly connected to the bottom end of the centrifugal pump body 3. The support block 4 is used to support the centrifugal pump body 3. The support block 4 is in the shape of a cuboid, and the inner wall of the support block 4 is provided with a plurality of holes for fixing the centrifugal pump body 3.

[0034] Reference Figure 2 , Figure 3 and Figure 5The protective mechanism 2 includes a placement block 21, the outer wall of which is slidably connected to the inner wall of the assembly box 1. The sliding direction of the placement block 21 is up and down. A protective groove 22 is provided at the top of the placement block 21. The protective groove 22 is rectangular in shape, and its length and width are greater than the length and width of the support block 4. The support block 4 is placed inside the protective groove 22. Four air pressure chambers 23 are provided on the inner wall of the placement block 21 outside the protective groove 22. The four air pressure chambers 23 are respectively located in the middle of the placement block 21 in the front, back, left, and right directions of the protective groove 22. By setting the number and position of the air pressure chambers 23, it is ensured that when the centrifugal pump falls, it can be protected regardless of the direction of the force. A baffle 24 is fixedly connected to the top of the assembly box 1 near the perimeter. An airbag 25 is fixedly connected to one end of the baffle 24 near the middle of the assembly box 1. The interior of the airbag 25 is connected to the interior of the pressure chamber 23. The inner wall of the baffle 24 has a groove that allows the airbag 25 to communicate with the pressure chamber 23. A control block 26 is piston-connected to the inner wall of the pressure chamber 23. The outer wall of the control block 26 fits against the inner wall of the pressure chamber 23. This fit ensures that the gas inside the pressure chamber 23 cannot leak out from the gap between the control block 26 and the pressure chamber 23. A push plate 27 is fixedly connected to one end of the control block 26 near the middle of the assembly box 1. The length of the push plate 27 is longer than the length of the control block 26. The end of the control block 26 away from the middle of the assembly box 1 is elastically connected to the inner wall of the pressure chamber 23 by a spring 210.

[0035] Reference Figure 3 , Figure 5 and Figure 6 The push plate 27 and the placement block 21 are jointly provided with a force-converting assembly 28. The force-converting assembly 28 includes a slide groove 281. The slide groove 281 is opened on the inner wall of the placement block 21 outside the protective groove 22. The number of slide grooves 281 is set to eight, and the eight slide grooves 281 are respectively set on both sides of the four air pressure chambers 23. A slider 282 is slidably connected to the inner wall of the slide groove 281. A connecting rod 283 is hinged to one end of the slider 282 near the middle of the assembly box 1. The length of the connecting rod 283 is shorter than the length of the slide groove 281. The end of the connecting rod 283 away from the slider 282 is hinged to the end of the push plate 27 away from the middle of the assembly box 1. The end of the slider 282 away from the control block 26 is elastically connected to the inner wall of the slide groove 281 through a second spring 284. One end of the second spring 284 is fixedly connected to the end of the slider 282 away from the control block 26, and the other end of the second spring 284 is fixedly connected to the inner wall of the slide groove 281.

[0036] Reference Figure 2 - Figure 4The bottom end of the placement block 21 is connected to the inner wall of the assembly box 1 through a buffer assembly 29. The buffer assembly 29 includes a pneumatic tube 291, which is filled with gas. The bottom end of the pneumatic tube 291 is hinged to the inner wall of the assembly box 1. A moving rod 292 is piston-connected to the inner wall of the pneumatic tube 291. The pneumatic tube 291 and the moving rod 292 are initially inclined. The upper end of the moving rod 292 is hinged to the bottom end of the placement block 21.

[0037] Working principle: When the centrifugal pump is dropped during transportation, it generates a downward force under the action of gravity. Therefore, after the assembly box 1 comes into contact with the ground, the centrifugal pump body 3 still has a downward force, so it continues to move downward under the action of gravity, and moves downward relative to the assembly box 1.

[0038] As the centrifugal pump body 3 continues to move downward, it drives the placement block 21 to move downward as well. This causes the placement block 21 to drive the moving rod 292 downward, resulting in the total length of the moving rod 292 and the air pressure pipe 291 becoming shorter during the downward movement. Since the moving rod 292 needs to overcome the pressure of the gas when it moves into the air pressure pipe 291, it can reset after its downward force decreases, thus achieving a buffering effect.

[0039] At the same time, the centrifugal pump body 3 generates a horizontal force due to its original direction of movement, causing it to move in the same direction. As it moves, the centrifugal pump body 3 drives the support block 4 to move synchronously with it. This causes the support block 4 to compress the control block 26 during its movement, increasing the area of ​​the control block 26 inside the air chamber 23. This increases the amount of gas inside the air bladder 25, thus increasing the degree of inflation of the air bladder 25. As a result, the centrifugal pump body 3 can more easily come into contact with the air bladder 25 during its movement. Since the air bladder 25 is soft, the centrifugal pump body 3 is less prone to damage.

[0040] At the same time, when the support block 4 pushes the push plate 27, the push plate 27 drives the connecting rod 283 and the end connected to it to move synchronously, thereby shortening the projected length of the connecting rod 283 in the direction of movement of the support block 4. This causes the connecting rod 283 to drive the slider 282 to slide inside the slide groove 281, thereby causing the slider 282 to squeeze the second spring 284 during the movement. This causes the second spring 284 to drive the slider 282 to generate a reset force under the action of elasticity. Therefore, it can achieve the effect of reducing the force between the support block 4 and the centrifugal pump body 3 in the original direction of movement.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A centrifugal pump with a protective device, comprising an assembly box (1), characterized in that: The assembly box (1) is equipped with a protective mechanism (2). The centrifugal pump body (3) is placed inside the assembly box (1). A support block (4) is fixedly connected to the bottom end of the centrifugal pump body (3). The protective mechanism (2) includes a placement block (21). The outer wall of the placement block (21) is slidably connected to the inner wall of the assembly box (1). A protective groove (22) is opened at the top of the placement block (21). A pressure chamber (23) is opened on the inner wall of the placement block (21) outside the protective groove (22). The placement block (21) is close to four A baffle (24) is fixedly connected to the top of the ring. An airbag (25) is fixedly connected to one end of the baffle (24) near the middle of the assembly box (1). A control block (26) is connected to the inner wall of the air pressure chamber (23). A push plate (27) is fixedly connected to one end of the control block (26) near the middle of the assembly box (1). A force-converting component (28) is provided on the outside of the push plate (27) and inside the placement block (21). The bottom end of the placement block (21) is connected to the inner wall of the assembly box (1) through a buffer component (29).

2. The centrifugal pump with protective device according to claim 1, characterized in that: The force-changing assembly (28) includes a slide (281), which is opened on the inner wall of the placement block (21) outside the protective groove (22). A slider (282) is slidably connected to the inner wall of the slide (281). A connecting rod (283) is hinged to one end of the slider (282) near the middle of the assembly box (1). The end of the connecting rod (283) away from the slider (282) is hinged to one end of the push plate (27) away from the middle of the assembly box (1). The end of the slider (282) away from the control block (26) is elastically connected to the inner wall of the slide (281) by a spring (284).

3. The centrifugal pump with protective device according to claim 1, characterized in that: The buffer assembly (29) includes a pneumatic tube (291), the bottom end of which is hinged to the inner wall of the assembly box (1), and a moving rod (292) is piston-connected to the inner wall of the pneumatic tube (291), the upper end of which is hinged to the bottom end of the placement block (21).

4. The centrifugal pump with protective device according to claim 1, characterized in that: The end of the control block (26) away from the middle of the assembly box (1) is elastically connected to the inner wall of the air chamber (23) by a spring (210).

5. The centrifugal pump with protective device according to claim 1, characterized in that: The protective groove (22) is rectangular in shape, and the length and width of the protective groove (22) are greater than the length and width of the support block (4).

6. The centrifugal pump with protective device according to claim 1, characterized in that: The number of air pressure chambers (23) is set to four, and the four air pressure chambers (23) are respectively located in the middle of the front, back, left and right directions of the placement block (21) in the protective groove (22).

7. The centrifugal pump with protective device according to claim 1, characterized in that: The interior of the airbag (25) is connected to the interior of the pressure chamber (23), and the inner wall of the baffle (24) has a groove that allows the airbag (25) to communicate with the pressure chamber (23).

8. The centrifugal pump with protective device according to claim 2, characterized in that: The number of chutes (281) is set to eight, and the eight chutes (281) are respectively set on both sides of the four pressure chambers (23).

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