End suction centrifugal pump

Abstract

The end suction centrifugal pump comprises a damping box and a bearing plate, the bearing plate is arranged above the damping box, a pump body is installed at the top end of the bearing plate, a filter pipe is arranged at the position of a port of the pump body, and four sets of inserting sleeves are installed at the end, close to the pump body, of the filter pipe at equal intervals. Inserting columns are installed at the positions, corresponding to end openings of the pump body, of the inserting sleeves, the inserting columns are slidably connected with the inserting sleeves, clamping grooves are formed in the side walls of the inserting columns, two limiting rings are installed on the side walls of the inserting sleeves, clamping rods are slidably installed in the limiting rings, and the surfaces of the clamping rods are sleeved with springs. According to the utility model, the filter pipe can be conveniently and quickly inserted and mounted, the filter screen can be conveniently and quickly dismounted and replaced, and the convenience of mounting, connecting and replacing the filter screen and the stability during use are improved.

Description

Technical Field

[0001] This utility model relates to the field of end-suction centrifugal pump technology, specifically an end-suction centrifugal pump. Background Technology

[0002] An end-suction centrifugal pump is a type of centrifugal pump that uses centrifugal force to draw in and discharge liquid. Its characteristic is that the inlet and outlet are located on the same side of the pump, with the inlet end being the end of the pump and the outlet end being the front end. The end-suction centrifugal pump generates centrifugal force through the rotation of the impeller, drawing the medium in from the inlet and accelerating it along the flow channel of the pump casing before discharging it from the outlet. The filter device of traditional centrifugal pumps is mostly fixedly installed on the pump body or pipeline, which is often inconvenient to disassemble and maintain. In order to improve this situation, an end-suction centrifugal pump is proposed.

[0003] As disclosed in the authorization announcement number CN214366866U, a horizontal single-stage end-suction centrifugal pump includes an oil shell and a support base. The support base is fixedly connected to the bottom of the oil shell. A water pump is fixedly connected to one side of the oil shell, and a motor is fixedly connected to the other side. An oil tank is fixedly connected inside the oil shell. An air bladder is fixedly connected to the lower surface of the oil tank. A piston is fixedly connected to the bottom of the air bladder. The piston is slidably connected inside a piston sleeve, and a cam is fixedly connected directly below it. The cam is fixedly connected to one side of the pump shaft, and the pump shaft is rotatably connected inside a lubrication hole.

[0004] Although the centrifugal pump operates by rotating the pump shaft and rotating the cam, and the piston can squeeze the air bladder during upward movement to squeeze out the lubricating oil in the oil tank, and can lubricate the bearing through the lubrication hole to reduce the noise generated during operation, the device can continuously lubricate itself without manual operation. In addition, the lubricating oil can carry away the heat generated during the rotation of the pump shaft, which helps to extend the service life of the pump shaft. When working outdoors, the device can adjust the height of the centrifugal pump according to the working environment. By rotating the lead screw, the first lead screw sleeve and the second lead screw sleeve move in opposite directions, so that the first to sixth adjusting legs can be gradually raised. At the appropriate height, the adjusting legs can be fixed by the limit pin, so that the centrifugal pump can be fixed at the appropriate height for operation, improving the practicality of the device.

[0005] However, this does not solve the problem that existing end-suction centrifugal pumps are not conducive to the convenient and quick insertion and installation of filter tubes, nor to the quick disassembly and replacement of filter screens, which affects the convenience of installation and filter screen replacement, as well as the stability during use. Utility Model Content

[0006] The purpose of this utility model is to provide an end-suction centrifugal pump to solve the problems mentioned in the background art, such as the inconvenience of quickly and easily inserting and installing filter tubes, the difficulty in quickly disassembling and replacing filter screens, and the impact on the convenience of installation, connection, and replacement of filter screens, as well as the stability during use.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an end-suction centrifugal pump, comprising a shock-absorbing box and a support plate. The support plate is disposed above the shock-absorbing box, and a pump body is mounted on the top of the support plate. A filter tube is disposed at the port of the pump body. Four sets of equally spaced plug-in sleeves are installed at one end of the filter tube near the pump body. A plug-in post is installed at the corresponding port of the pump body for each plug-in sleeve, and the plug-in post is slidably connected to the plug-in sleeve. A snap-fit ​​groove is installed on the side wall of each plug-in post. Two sets of limiting rings are installed on the side wall of each plug-in sleeve. A snap-fit ​​rod is slidably installed inside each limiting ring. A spring is fitted on the surface of each snap-fit ​​rod, and the two ends of the spring are respectively connected to the limiting ring and the snap-fit ​​rod. A filter screen is disposed inside the filter tube.

[0008] Preferably, four sets of equally spaced limiting grooves are installed on the inner wall of the filter tube, and four sets of equally spaced limiting blocks are installed on the side wall of the filter screen, with the limiting blocks slidably connected to the limiting grooves.

[0009] Preferably, the shock absorber is provided inside the shock absorber box, and both ends of the shock absorber are provided with hinge shafts.

[0010] Preferably, the surfaces of the hinge shafts are each equipped with an upper rotating arm and a lower rotating arm, and both the lower rotating arm and the upper rotating arm are movably connected to the shock absorber via the hinge shaft.

[0011] Preferably, each of the upper rotating arms is equipped with an upper movable shaft at one end near the bearing plate, and the upper rotating arm is movably connected to the bearing plate through the upper movable shaft.

[0012] Preferably, each of the lower rotating arms is equipped with a lower movable shaft at the end near the shock absorber box, and the lower rotating arm is movably connected to the shock absorber box through the lower movable shaft.

[0013] Preferably, sliders are symmetrically installed at the bottom end of the support plate, and the sliders are fixedly connected to the support plate.

[0014] Preferably, the inner wall of the shock absorber box is symmetrically equipped with sliding grooves, and the slider is slidably connected to the sliding grooves.

[0015] Compared with the prior art, the beneficial effects of this utility model are: this end-suction centrifugal pump not only realizes convenient and quick insertion and installation of filter tubes, and facilitates quick disassembly and replacement of filter screens, but also improves the convenience of installation, connection and replacement of filter screens as well as the stability during use.

[0016] (1) Align the limiting block with the limiting groove, move the filter screen, and the filter screen will drive the limiting block to move inside the limiting groove. When the limiting block moves to the bottom of the limiting groove, rotate the filter screen, and the filter screen will drive the limiting block to rotate. Install the filter screen inside the filter tube to filter the water flow. Then take out the filter tube, align the plug sleeve with the plug post, move the filter tube, and the filter tube will drive the plug sleeve to move and insert the plug post into the plug sleeve. The plug post will drive the locking rod to move outward of the plug sleeve. The locking rod will squeeze the spring, and when the locking groove... When moved to the snap-fit ​​position, the spring drives the snap-fit ​​rod to reset and snap into the inside of the plug sleeve, thereby installing the filter tube at the port position of the pump body. A sealing ring is provided at the connection between the filter tube and the pump body to ensure its sealing. Then, the filter tube can be connected to the external pipeline. When the filter screen needs to be replaced, the external pipeline is removed, and the filter screen is taken out from the inside of the filter tube for replacement. This realizes convenient and quick plug-in installation of the filter tube, facilitates quick disassembly and replacement of the filter screen, and improves the convenience of installation, connection and replacement of the filter screen.

[0017] (2) When the pump body is working, it will generate vibration. The pump body will drive the bearing plate to move downward. The bearing plate will drive the upper rotating arm to rotate through the upper movable shaft. Under the bearing action of the shock absorber, the upper rotating arm will drive the lower rotating arm to rotate through the hinge shaft with the lower movable shaft as the axis. The upper rotating arm and the lower rotating arm will squeeze the shock absorber from both sides of the shock absorber. The shock absorber will counteract this and thus ensure the stability of the pump body during use. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional perspective structural diagram of the filter tube of this utility model;

[0020] Figure 3 This is a front view cross-sectional structural diagram of the shock absorber box of this utility model;

[0021] Figure 4 This is a three-dimensional perspective structural diagram of the plug sleeve of this utility model;

[0022] Figure 5 This is a three-dimensional structural diagram of the filter screen and filter tube of this utility model.

[0023] In the diagram: 1. Shock absorber box; 2. Bearing plate; 3. Pump body; 4. Filter pipe; 5. Filter screen; 6. Insertion post; 7. Insertion sleeve; 8. Upper movable shaft; 9. Upper rotating arm; 10. Hinge shaft; 11. Shock absorber; 12. Slider; 13. Slide groove; 14. Snap-fit ​​rod; 15. Limiting ring; 16. Spring; 17. Snap-fit ​​groove; 18. Limiting block; 19. Limiting groove; 20. Lower rotating arm; 21. Lower movable shaft. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] Please see Figure 1-5 The present invention provides an embodiment of an end-suction centrifugal pump, comprising a shock-absorbing box 1 and a support plate 2. The support plate 2 is disposed above the shock-absorbing box 1, and a pump body 3 is mounted on the top of the support plate 2. A filter tube 4 is disposed at the port of the pump body 3. Four sets of equally spaced plug sleeves 7 are installed at one end of the filter tube 4 near the pump body 3. A plug post 6 is installed at the port of the pump body 3 corresponding to the plug sleeve 7, and the plug post 6 is slidably connected to the plug sleeve 7. A snap-fit ​​groove 17 is installed on the side wall of the plug post 6. Two sets of limiting rings 15 are installed on the side wall of the plug sleeve 7. A snap-fit ​​rod 14 is slidably installed inside the limiting ring 15. A spring 16 is fitted on the surface of the snap-fit ​​rod 14, and the two ends of the spring 16 are respectively connected to the limiting ring 15 and the snap-fit ​​rod 14. A filter screen 5 is disposed inside the filter tube 4.

[0026] Align the limiting block 18 with the limiting groove 19, move the filter screen 5, and the filter screen 5 will drive the limiting block 18 to move inside the limiting groove 19. When the limiting block 18 moves to the bottom of the limiting groove 19, rotate the filter screen 5, and the filter screen 5 will drive the limiting block 18 to rotate. With the limiting cooperation between the limiting block 18 and the limiting groove 19, the filter screen 5 is installed inside the filter tube 4, and the filter screen 5 filters the water flow. Then remove the filter tube 4, align the insertion sleeve 7 with the insertion post 6, move the filter tube 4, and the filter tube 4 will drive the insertion sleeve 7 to move and insert the insertion post 6 into the insertion sleeve 7. The insertion post 6 will drive the locking rod 14 to move outward of the insertion sleeve 7, and the limiting ring 15 will be in place. With the limiting action, the snap-fit ​​rod 14 squeezes the spring 16. When the snap-fit ​​groove 17 moves to the position of the snap-fit ​​rod 14, the spring 16 drives the snap-fit ​​rod 14 to reset and snap into the inside of the plug sleeve 7, so as to install the filter tube 4 at the port position of the pump body 3. A sealing ring is provided at the connection between the filter tube 4 and the pump body 3 to ensure its sealing. Then the filter tube 4 can be connected to the external pipe. When the filter screen 5 needs to be replaced, the external pipe is removed, and the filter screen 5 is taken out from the inside of the filter tube 4 for replacement. This realizes convenient and quick plug-in installation of the filter tube, facilitates quick disassembly and replacement of the filter screen, and improves the convenience of installation, connection and replacement of the filter screen.

[0027] Four sets of equally spaced limiting grooves 19 are installed on the inner wall of the filter tube 4, and four sets of equally spaced limiting blocks 18 are installed on the side wall of the filter screen 5, and the limiting blocks 18 are slidably connected to the limiting grooves 19.

[0028] The shock absorber 11 is installed inside the shock absorber box 1. Both ends of the shock absorber 11 are provided with hinge shafts 10. The surfaces of the hinge shafts 10 are equipped with upper rotating arms 9 and lower rotating arms 20. The lower rotating arms 20 and the upper rotating arms 9 are movably connected to the shock absorber 11 through the hinge shafts 10.

[0029] The upper rotating arm 9 is equipped with an upper movable shaft 8 at one end near the bearing plate 2, and the upper rotating arm 9 is movably connected to the bearing plate 2 through the upper movable shaft 8. The lower rotating arm 20 is equipped with a lower movable shaft 21 at one end near the shock absorber box 1, and the lower rotating arm 20 is movably connected to the shock absorber box 1 through the lower movable shaft 21.

[0030] Slider 12 is symmetrically installed at the bottom end of the bearing plate 2 and is fixedly connected to the bearing plate 2. Slide groove 13 is symmetrically installed on the inner wall of the shock absorber box 1 and is slidably connected to the slide groove 13.

[0031] When the pump body 3 is working, it will vibrate. Under the sliding cooperation of the slider 12 and the slide groove 13, the pump body 3 drives the bearing plate 2 to move downward. The bearing plate 2 drives the upper rotating arm 9 to rotate through the upper movable shaft 8. Under the bearing action of the shock absorber box 1, the upper rotating arm 9 drives the lower rotating arm 20 to rotate through the hinge shaft 10 with the lower movable shaft 21 as the axis. The upper rotating arm 9 and the lower rotating arm 20 squeeze the shock absorber 11 from both sides, and the shock absorber 11 cancels it out, thereby ensuring the stability of the pump body 3 during use.

[0032] Working principle: Align the limiting block 18 with the limiting groove 19, move the filter screen 5, and the filter screen 5 will drive the limiting block 18 to move inside the limiting groove 19. When the limiting block 18 moves to the bottom of the limiting groove 19, rotate the filter screen 5, and the filter screen 5 will drive the limiting block 18 to rotate. Under the limiting cooperation of the limiting block 18 and the limiting groove 19, the filter screen 5 is installed inside the filter tube 4, and the filter screen 5 filters the water flow. Then, remove the filter tube 4, align the insertion sleeve 7 with the insertion post 6, move the filter tube 4, and the filter tube 4 will drive the insertion sleeve 7 to move and insert the insertion post 6 into the insertion sleeve 7. The insertion post 6 will drive the locking rod 14 to move to the outside of the insertion sleeve 7, and the locking rod 14 will squeeze the spring 16. When the locking groove 17 moves to the position of the locking rod 14, the spring 16 will drive the locking rod 14 to reset and lock it inside the insertion sleeve 7, thus installing the filter tube 4 into the pump body 3. At the port position, a sealing ring is provided at the connection between the filter tube 4 and the pump body 3 to ensure its sealing. Then, the filter tube 4 can be connected to the external pipe. When the filter screen 5 needs to be replaced, the external pipe is removed, and the filter screen 5 is taken out from the inside of the filter tube 4 for replacement. When the pump body 3 is working, it will vibrate. Under the sliding cooperation of the slider 12 and the slide groove 13, the pump body 3 drives the bearing plate 2 to move downward. The bearing plate 2 drives the upper rotating arm 9 to rotate through the upper movable shaft 8. Under the bearing action of the shock absorber box 1, the upper rotating arm 9 drives the lower rotating arm 20 to rotate through the hinge shaft 10 with the lower movable shaft 21 as the axis. The upper rotating arm 9 and the lower rotating arm 20 squeeze the shock absorber 11 from both sides, and the shock absorber 11 cancels it out, thereby ensuring the stability of the pump body 3 during use. The above is the complete usage of the end suction centrifugal pump.

Claims

1. An end-suction centrifugal pump, comprising a shock-absorbing box (1) and a support plate (2), characterized in that: A bearing plate (2) is provided above the shock-absorbing box (1). A pump body (3) is installed on the top of the bearing plate (2). A filter tube (4) is provided at the port of the pump body (3). Four sets of equally spaced plug sleeves (7) are installed on the end of the filter tube (4) near the pump body (3). A plug post (6) is installed at the port of the pump body (3) corresponding to each plug sleeve (7). The plug post (6) is slidably connected to the plug sleeve (7). The side walls of the plug-in post (6) are all equipped with snap-fit ​​grooves (17), and the side walls of the plug-in sleeve (7) are all equipped with two sets of limiting rings (15). The inside of the limiting rings (15) is slidably installed with snap-fit ​​rods (14). The surface of the snap-fit ​​rods (14) is fitted with springs (16), and the two ends of the springs (16) are respectively connected to the limiting rings (15) and the snap-fit ​​rods (14). The inside of the filter tube (4) is equipped with a filter screen (5).

2. The end-suction centrifugal pump according to claim 1, characterized in that: The inner wall of the filter tube (4) is equipped with four sets of equally spaced limiting grooves (19), and the side wall of the filter screen (5) is equipped with four sets of equally spaced limiting blocks (18), and the limiting blocks (18) are slidably connected to the limiting grooves (19).

3. The end-suction centrifugal pump according to claim 1, characterized in that: The shock absorber (1) is provided inside the shock absorber box (1), and both ends of the shock absorber (11) are provided with hinge shafts (10).

4. A centrifugal pump with end suction according to claim 3, characterized in that: The surface of the hinge shaft (10) is equipped with an upper rotating arm (9) and a lower rotating arm (20), and the lower rotating arm (20) and the upper rotating arm (9) are movably connected to the shock absorber (11) through the hinge shaft (10).

5. A centrifugal pump with end suction according to claim 4, characterized in that: The upper rotating arm (9) is equipped with an upper movable shaft (8) at one end near the bearing plate (2), and the upper rotating arm (9) is movably connected to the bearing plate (2) through the upper movable shaft (8).

6. A centrifugal pump with end suction according to claim 4, characterized in that: The lower rotating arm (20) is equipped with a lower movable shaft (21) at one end near the shock absorber box (1), and the lower rotating arm (20) is movably connected to the shock absorber box (1) through the lower movable shaft (21).

7. A centrifugal pump with end suction according to claim 1, characterized in that: The bottom end of the support plate (2) is symmetrically equipped with sliders (12), and the sliders (12) are fixedly connected to the support plate (2).

8. A centrifugal pump with end suction according to claim 1, characterized in that: The inner wall of the shock-absorbing box (1) is symmetrically equipped with sliding grooves (13), and the slider (12) is slidably connected to the sliding grooves (13).

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