OH2 type self-priming centrifugal pump

Abstract

The invention relates to the technical field of centrifugal pumps, and discloses an OH2 type self-priming centrifugal pump which comprises a bottom plate, a buffering protection mechanism is arranged at the top of the bottom plate, a pump body mechanism is arranged at the top of the buffering protection mechanism, a filtering mechanism is arranged on the left side of the pump body mechanism, and a mounting plate is fixedly connected to the outer portion of the bottom plate. The buffer protection mechanism comprises a mounting assembly and a buffer assembly. Vibration generated by the device enables a top plate at the bottom of a mounting frame to move downwards, at the moment, the top plate pushes a second inclined block, then a sliding block in a second rotating plate is driven to slide in a straight plate, meanwhile, the sliding block also drives a first rotating plate to rotate outside a fixing base, and in order to buffer the actions, a second damper, a second spring and a third spring jointly act, so that the movement is buffered. In addition, the first damper is matched with the first spring to buffer the downward pressure of the top plate, and the buffering measures are beneficial to reducing vibration of the device, protecting the device and prolonging the service life.

Description

Technical Field

[0001] The present invention relates to the technical field of centrifugal pumps, and specifically relates to an OH2 type self-priming centrifugal pump. Background Art

[0002] A centrifugal pump refers to a pump that transports liquids by the centrifugal force generated when the impeller rotates. Before starting the centrifugal pump, it is necessary to fill the volute with water, and then start the motor, so that the pump shaft drives the impeller and water to perform a high-speed rotational motion. The water undergoes a centrifugal motion, is thrown towards the outer edge of the impeller, and flows into the pressure water pipeline of the water pump through the flow channel of the volute pump casing. The OH2 type self-priming centrifugal pump is a specially designed centrifugal pump that can self-prime liquids without external vacuum equipment. Therefore, an OH2 type self-priming centrifugal pump is required.

[0003] According to a self-priming centrifugal pump disclosed on the patent network (authorization announcement number: CN 118148933 B), it is described that "the present invention relates to the technical field of centrifugal pumps, and specifically discloses a self-priming centrifugal pump, including a pump body, the pump body includes a volute, an impeller, a pump shaft, a motor, and a water inlet pipe. The impeller is arranged inside the volute, the motor is arranged at the rear side of the volute, the rear end of the pump shaft is connected to the output end of the front side of the motor, the front end of the pump shaft passes through the volute and is connected to the middle part of the rear side of the impeller, the water inlet pipe is communicated with the middle part of the front side of the volute, a liquid storage box is connected to the upper end of the volute, a water outlet pipe is connected to the middle part of the upper end of the liquid storage box, the lower end of the water outlet pipe penetrates through the liquid storage box and is communicated with the inner cavity of the volute, an induction module is arranged on the left side of the inner cavity of the liquid storage box, and a reflux module is connected between the upper end of the liquid storage box and the water outlet pipe. When using the centrifugal pump, only need to fill water in the liquid storage box for the first time, and there is no need to fill water in the liquid storage box and the volute subsequently. The water replenishment in the liquid storage box can be completed during the operation of the centrifugal pump, reducing the usage conditions and operation steps of the centrifugal pump, and improving the convenience of using the centrifugal pump."

[0004] Regarding the above description, the applicant believes that there are the following problems: The water in the liquid storage box flows into the volute through the communication conduit for priming. As the water level in the liquid storage box drops, the falling plate member and the floating plate member drop synchronously. When the falling plate member falls into the fitting notch and contacts the first-stage trigger switch, the first-stage trigger switch is activated and sends a signal to the PLC controller. After receiving the signal, the PLC controller closes the solenoid valve and simultaneously starts the motor and the electric telescopic rod to drive the pump shaft and the impeller to rotate, so that the centrifugal pump starts to operate. However, it should be noted that during the operation of the centrifugal pump, the device will generate continuous vibrations. Although this kind of vibration is to a certain extent inevitable, in the long run, it may accelerate the wear of the internal components of the pump, especially those precision mechanical components. The increased wear will not only reduce the working efficiency of the centrifugal pump, but may also cause more serious failures, ultimately leading to premature damage of the equipment. Summary of the Invention

[0005] The purpose of the present invention is to provide an OH2 type self-priming centrifugal pump to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: An OH type self-priming centrifugal pump includes a bottom plate, a buffer protection mechanism is arranged on the top of the bottom plate, a pump body mechanism is arranged on the top of the buffer protection mechanism, a filtering mechanism is arranged on the left side of the pump body mechanism, and a mounting plate is fixedly connected to the outside of the bottom plate;

[0007] The buffer protection mechanism includes a mounting component and a buffer component, and the mounting component is arranged at the bottom of the buffer component;

[0008] The mounting component includes a mounting box, the mounting box is fixedly connected to the top of the bottom plate, a damper one is fixedly connected to the top of the mounting box, the top of the damper one is fixedly connected to a top plate, a spring one is fixedly connected between the bottom of the top plate and the middle position of the bottom of the bottom plate, a first inclined block is fixedly connected to the bottom of the top plate, a mounting frame is fixedly connected to the top of the top plate, and a lifting frame is fixedly connected to the top of the mounting frame.

[0009] Preferably, there are four groups of the first inclined blocks, and the four groups of the first inclined blocks are circumferentially arrayed at the bottom of the top plate.

[0010] Preferably, the buffer component includes a connecting plate, the connecting plate is fixedly connected to the top of the bottom plate, a fixed seat is fixedly connected to the outside of the connecting plate, a first rotating plate is rotatably connected to the outside of the fixed seat, a sliding block is rotatably connected to the end of the first rotating plate away from the fixed seat, a second rotating plate is rotatably connected to the outside of the sliding block, a second inclined block is rotatably connected to the end of the second rotating plate away from the sliding block, a support column is fixedly connected to the outside of the connecting plate, a sliding frame is slidably connected to the outside of the support column, a straight plate is fixedly connected to the outside of the sliding frame, a spring two is arranged between the middle positions of the inside of the straight plate and the outside of the sliding block, a damper two is fixedly connected to the outside of the connecting plate, and a spring three is arranged between the middle positions of the outside of the second inclined block and the inside of the sliding frame at the middle position of the outside of the support column.

[0011] Preferably, through holes are opened at the corresponding positions of the sliding frame, the support column and the second inclined block, and the support column and the second inclined block are both slidably connected inside the sliding frame.

[0012] Preferably, a chute is opened at the corresponding position of the straight plate and the sliding block, and the sliding block is slidably connected inside the straight plate.

[0013] Preferably, a chute is opened at the corresponding position of the mounting box and the top plate, and the top plate is slidably connected inside the mounting box.

[0014] Preferably, the pump body mechanism includes a pump body frame, the pump body frame is arranged on the top of the mounting frame, a motor is fixedly connected to the top of the lifting frame, a centrifugal pump is fixedly connected to the output end of the motor, bolts are arranged inside the pump body frame, and nuts are threadedly connected to the outside of the bolts.

[0015] Preferably, both the motor and the centrifugal pump are fixed to the top of the pump body frame by bolts and nuts.

[0016] Preferably, the filtering mechanism includes a filtering box fixedly connected to the outside of the centrifugal pump. A flat plate is provided on the top of the filtering box, a vertical plate is fixedly connected to the top of the flat plate, a screw rod is rotatably connected inside the vertical plate, a trapezoidal block is threadedly connected to the outside of the screw rod, a limiting rod is fixedly connected to the inner side of the vertical plate, a fourth spring is fixedly connected to the top of the flat plate, a plug is fixedly connected to the outside of the fourth spring, a filter plate is fixedly connected to the bottom of the flat plate, and a vertical block is fixedly connected to the top of the filtering box.

[0017] Preferably, a sliding groove is provided at the corresponding position between the filtering box and the filter plate, the filter plate is slidably connected inside the filtering box, a through hole is provided at the corresponding position between the vertical block and the plug, and the plug is slidably connected inside the vertical block.

[0018] Compared with the prior art, the present invention provides an OH-type self-priming centrifugal pump, which has the following beneficial effects: the vibration generated by the device will cause the top plate at the bottom of the mounting frame to move downward. At this time, the top plate pushes the second inclined block, thereby driving the sliding block inside the second rotating plate to slide inside the straight plate. At the same time, the sliding block also drives the first rotating plate to rotate outside the fixed seat. To buffer these actions, the second damper, the second spring and the third spring work together to buffer the return thrust of the second inclined block. In addition, the first damper and the first spring cooperate to buffer the downward pressure of the top plate. These buffering measures help to reduce the vibration of the device, protect the equipment and extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the buffer protection mechanism of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the installation component of the buffer protection mechanism of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of some components of the installation component of the buffer protection mechanism of the present invention;

[0024] Figure 5 For Figure 3Schematic enlarged structure diagram at position A;

[0025] Figure 6 Schematic structure diagram of the pump body mechanism of the present invention;

[0026] Figure 7 Schematic structure diagram of the filtering mechanism of the present invention.

[0027] In the figure: 1, bottom plate; 2, buffer protection mechanism; 21, installation component; 211, installation box; 212, damper I; 213, top plate; 214, mounting bracket; 215, elevation frame; 216, spring I; 217, inclined block I; 22, buffer component; 221, connecting plate; 222, fixed seat; 223, support pillar; 224, damper II; 225, rotating plate I; 226, sliding block; 227, rotating plate II; 228, sliding frame; 229, straight plate; 2210, spring II; 2211, inclined block II; 2212, spring III; 3, pump body mechanism; 31, pump body frame; 32, motor; 33, nut; 34, centrifugal pump; 35, bolt; 4, filtering mechanism; 41, filtering box; 42, flat plate; 43, filter plate; 44, vertical plate; 45, screw; 46, trapezoidal block; 47, limiting rod; 48, spring IV; 49, insertion block; 410, vertical block; 5, mounting plate. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Embodiment 1:

[0031] Please refer to Figures 1-7, the present invention provides a technical solution: an OH2 type self-priming centrifugal pump, which includes a bottom plate 1. A buffer protection mechanism 2 is arranged on the top of the bottom plate 1. A pump body mechanism 3 is arranged on the top of the buffer protection mechanism 2. A filtering mechanism 4 is arranged on the left side of the pump body mechanism 3. An installation plate 5 is fixedly connected to the outside of the bottom plate 1;

[0032] The buffer protection mechanism 2 includes an installation component 21 and a buffer component 22. The installation component 21 is arranged at the bottom of the buffer component 22;

[0033] The installation component 21 includes an installation box 211 which is fixedly connected to the top of the bottom plate 1. A first damper 212 is fixedly connected to the top of the installation box 211. The top of the first damper 212 is fixedly connected to a top plate 213. A first spring 216 is fixedly connected between the bottom of the top plate 213 and the middle position of the bottom of the bottom plate 1. A first inclined block 217 is fixedly connected to the bottom of the top plate 213. An installation frame 214 is fixedly connected to the top of the top plate 213. An elevation frame 215 is fixedly connected to the top of the installation frame 214. Due to the setting of the first damper 212, it is beneficial to cooperate with the first spring 216 to buffer the top plate 213. There are four groups of the first inclined blocks 217 which are circumferentially arrayed at the bottom of the top plate 213. Due to the setting of the first inclined blocks 217, it is beneficial to facilitate sliding outside the second inclined block 2211. The buffer component 22 includes a connecting plate 221 which is fixedly connected to the top of the bottom plate 1. A fixed seat 222 is fixedly connected to the outside of the connecting plate 221. A first rotating plate 225 is rotatably connected to the outside of the fixed seat 222. A sliding block 226 is rotatably connected to the end of the first rotating plate 225 far from the fixed seat 222. A second rotating plate 227 is rotatably connected to the outside of the sliding block 226. A second inclined block 2211 is rotatably connected to the end of the second rotating plate 227 far from the sliding block 226. A support column 223 is fixedly connected to the outside of the connecting plate 221. A sliding frame 228 is slidably connected to the outside of the support column 223. A straight plate 229 is fixedly connected to the outside of the sliding frame 228. A second spring 2210 is arranged between the middle position of the inside of the straight plate 229 and the outside of the sliding block 226. A second damper 224 is fixedly connected to the outside of the connecting plate 221. A third spring 2212 is arranged between the middle position of the outside of the second inclined block 2211 and the inside of the sliding frame 228 at the middle position of the outside of the support column 223. Due to the setting of the third spring 2212, it is beneficial to cooperate with the second damper 224 to buffer the second inclined block 2211. Through holes are opened at the corresponding positions of the sliding frame 228, the support column 223 and the second inclined block 2211. The support column 223 and the second inclined block 2211 are both slidably connected to the inside of the sliding frame 228. Due to the setting of the sliding frame 228, it is beneficial to facilitate the sliding of the sliding block 226. A sliding groove is opened at the corresponding position of the straight plate 229 and the sliding block 226. The sliding block 226 is slidably connected to the inside of the straight plate 229. Due to the setting of the sliding block 226, it is beneficial to drive the first rotating plate 225 and the second rotating plate 227 to slide inside the straight plate 229. A sliding groove is opened at the corresponding position of the installation box 211 and the top plate 213. The top plate 213 is slidably connected to the inside of the installation box 211. Due to the setting of the installation box 211, it is beneficial to provide an installation basis for other components.

[0034] Embodiment Two:

[0035] Please refer to Figure 6, and in combination with Embodiment 1, it is further obtained that the pump body mechanism 3 includes a pump body frame 31. The pump body frame 31 is arranged on the top of the mounting frame 214. A motor 32 is fixedly connected to the top of the elevation frame 215. The output end of the motor 32 is fixedly connected to a centrifugal pump 34. Bolts 35 are arranged inside the pump body frame 31, and nuts 33 are threadedly connected to the outside of the bolts 35. Since the motor 32 is provided, it is beneficial to provide power for the centrifugal pump 34; both the motor 32 and the centrifugal pump 34 are fixed to the top of the pump body frame 31 by the cooperation of the bolts 35 and the nuts 33. Since the nuts 33 and the bolts 35 are provided, it is beneficial to fix the motor 32 and the centrifugal pump 34.

[0036] Embodiment 3:

[0037] Please refer to Figure 7 , and in combination with Embodiment 1 and Embodiment 2, it is further obtained that the filtering mechanism 4 includes a filtering box 41. The filtering box 41 is fixedly connected to the outside of the centrifugal pump 34. A flat plate 42 is arranged on the top of the filtering box 41. A vertical plate 44 is fixedly connected to the top of the flat plate 42. A screw 45 is rotatably connected inside the vertical plate 44. A trapezoidal block 46 is threadedly connected to the outside of the screw 45. A limiting rod 47 is fixedly connected to the inner side of the vertical plate 44. A fourth spring 48 is fixedly connected to the top of the flat plate 42. An insertion block 49 is fixedly connected to the outside of the fourth spring 48. A filter plate 43 is fixedly connected to the bottom of the flat plate 42. A vertical block 410 is fixedly connected to the top of the filtering box 41. Since the filter plate 43 is provided, it is beneficial to prevent impurities from entering the inside of the centrifugal pump 34; a sliding groove is formed at the corresponding position of the filtering box 41 and the filter plate 43, and the filter plate 43 is slidably connected inside the filtering box 41. A through hole is formed at the corresponding position of the vertical block 410 and the insertion block 49, and the insertion block 49 is slidably connected inside the vertical block 410. Since the insertion block 49 is provided, it is beneficial to cooperate with the push of the fourth spring 48 to enter the vertical block 410 to fix the flat plate 42.

[0038] During the actual operation process, when this device is in use, by inserting the filter plate 43 at the bottom of the flat plate 42 into the interior of the filter box 41, and then rotating the screw rod 45, the screw rod 45 drives the trapezoidal block 46 to slide outside the limiting rod 47, and then pushes the insertion block 49 into the interior of the vertical block 410, realizing the fixation of the filter plate 43 inside the filter box 41. The motor 32 and the centrifugal pump 34 are fixed outside the pump body frame 31 at the top of the mounting frame 214 through the nuts 33 and the bolts 35. The vibration generated during the operation of the device will cause the top plate 213 at the bottom of the mounting frame 214 to move downward. At this time, the top plate 213 pushes the second inclined block 2211, and then drives the sliding block 226 inside the second rotating plate 227 to slide inside the straight plate 229. At the same time, the sliding block 226 also drives the first rotating plate 225 to rotate outside the fixed seat 222. To buffer these actions, the second damper 224, the second spring 2210, and the third spring 2212 act together to buffer the return thrust of the second inclined block 2211. In addition, the first damper 212 cooperates with the first spring 216 to buffer the downward pressure of the top plate 213. These buffering measures help to reduce the vibration of the device, protect the equipment, and extend its service life.

[0039] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

Claims

1. An OH2 type self-priming centrifugal pump, comprising a base plate (1), characterized in that: A buffer protection mechanism (2) is arranged on the top of the bottom plate (1), a pump body mechanism (3) is arranged on the top of the buffer protection mechanism (2), a filter mechanism (4) is arranged on the left side of the pump body mechanism (3), and a mounting plate (5) is fixedly connected to the outside of the bottom plate (1); The buffer protection mechanism (2) comprises a mounting assembly (21) and a buffer assembly (22), wherein the mounting assembly (21) is arranged at the bottom of the buffer assembly (22); The mounting assembly (21) comprises a mounting box (211), the mounting box (211) is fixedly connected to the top of the base plate (1), the top of the mounting box (211) is fixedly connected to a damper 1 (212), the top of the damper 1 (212) is fixedly connected to a top plate (213), a spring 1 (216) is fixedly connected between the bottom of the top plate (213) and the bottom of the base plate (1) at a midpoint, the bottom of the top plate (213) is fixedly connected to an inclined block 1 (217), the top of the top plate (213) is fixedly connected to a mounting frame (214), and the top of the mounting frame (214) is fixedly connected to a lifting frame (215).

2. An OH2 type self-priming centrifugal pump according to claim 1, characterized in that: The inclined blocks (217) are provided in four groups, and the four groups of inclined blocks (217) are arranged in a circular array at the bottom of the top plate (213).

3. An OH2 type self-priming centrifugal pump according to claim 1, characterized in that: The buffer assembly (22) comprises a connecting plate (221), the connecting plate (221) is fixedly connected to the top of the bottom plate (1), the outside of the connecting plate (221) is fixedly connected to a fixing seat (222), the outside of the fixing seat (222) is rotatably connected to a rotating plate 1 (225), the inside of the rotating plate 1 (225) at one end away from the fixing seat (222) is rotatably connected to a sliding block (226), the outside of the sliding block (226) is rotatably connected to a rotating plate 2 (227), and the inside of the rotating plate 2 (227) at one end away from the sliding block (226) is rotatably connected to an inclined block 2 (226). 211), the outside of the connecting plate (221) is fixedly connected to a pillar (223), the outside of the pillar (223) is slidably connected to a sliding frame (228), the outside of the sliding frame (228) is fixedly connected to a straight plate (229), a spring 2 (2210) is arranged at a middle position between the inside of the straight plate (229) and the outside of the sliding block (226), the outside of the connecting plate (221) is fixedly connected to a damper 2 (224), and a spring 3 (2212) is arranged between the outside of the inclined block 2 (2211) and the inside of the sliding frame (228) at a middle position between the outside of the pillar (223).

4. An OH2 type self-priming centrifugal pump according to claim 1, characterized in that: Through holes are provided at corresponding positions of the sliding frame (228), the pillar (223) and the second inclined block (2211), and the pillar (223) and the second inclined block (2211) are both slidably connected inside the sliding frame (228).

5. The OH2 self-priming centrifugal pump according to claim 1, characterized in that: Sliding grooves are provided at corresponding positions of the straight plate (229) and the sliding block (226), and the sliding block (226) is slidably connected inside the straight plate (229).

6. An OH2 type self-priming centrifugal pump according to claim 1, characterized in that: Slide grooves are provided at corresponding positions of the installation box (211) and the top plate (213), and the top plate (213) is slidably connected to the inside of the installation box (211).

7. An OH2 type self-priming centrifugal pump according to claim 1, characterized in that: The pump body mechanism (3) comprises a pump body frame (31), the pump body frame (31) is arranged on the top of the mounting frame (214), a motor (32) is fixedly connected to the top of the lifting frame (215), a centrifugal pump (34) is fixedly connected to the output end of the motor (32), a bolt (35) is arranged inside the pump body frame (31), and a nut (33) is threadedly connected to the outside of the bolt (35).

8. An OH2 type self-priming centrifugal pump according to claim 1, characterized in that: The motor (32) and the centrifugal pump (34) are fixed to the top of the pump frame (31) by means of bolts (35) and nuts (33).

9. An OH2 type self-priming centrifugal pump according to claim 1, characterized in that: The filter mechanism (4) comprises a filter box (41), the filter box (41) is fixedly connected to the outside of the centrifugal pump (34), a flat plate (42) is arranged on the top of the filter box (41), a vertical plate (44) is fixedly connected to the top of the flat plate (42), a screw rod (45) is rotatably connected inside the vertical plate (44), a trapezoidal block (46) is threadedly connected to the outside of the screw rod (45), a limit rod (47) is fixedly connected to the inside of the vertical plate (44), a spring four (48) is fixedly connected to the top of the flat plate (42), an insert block (49) is fixedly connected to the outside of the spring four (48), a filter plate (43) is fixedly connected to the bottom of the flat plate (42), and a vertical block (410) is fixedly connected to the top of the filter box (41).

10. An OH2 self-priming centrifugal pump according to claim 1, characterized in that: Slide grooves are provided at corresponding positions of the filter box (41) and the filter plate (43), and the filter plate (43) is slidably connected inside the filter box (41). Through holes are provided at corresponding positions of the vertical block (410) and the plug block (49), and the plug block (49) is slidably connected inside the vertical block (410).

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