Front suction type centrifugal pump

Abstract

The utility model relates to the technical field of centrifugal pumps, and provides a front suction type centrifugal pump which comprises a bottom plate, the top of the bottom plate is fixedly connected with a centrifugal pump body, the side face of the centrifugal pump body is fixedly connected with a suction pipeline, and the top of the bottom plate is provided with a detection device. The detection device comprises a motor, the motor is arranged above the bottom plate, the top of the bottom plate is fixedly connected with a soap box, and through mutual cooperation of the motor, the soap box, the rotating shaft, the baffle, the first connecting disc and other components in the detection device, when the motor is started, the rotating shaft rotates, and the soap box is fixedly connected with the soap box. When the liquid outlet is opened, liquid soap in the soap box flows to the joint of the first connecting disc and the second connecting disc through the liquid outlet, air tightness detection is carried out by using a bubble method, and the used liquid soap falls into the collecting box. The air tightness detection effect is achieved, and the used liquid soap is collected at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifugal pump technical field, specifically, relate to a front suction type centrifugal pump. BACKGROUND

[0002] The front suction type centrifugal pump (also called front suction type centrifugal pump) is a common centrifugal pump type, and its main feature is that the water inlet of the pump is located at the front of the pump body, the liquid suction inlet and the discharge outlet of the pump are relatively independent, and the design of the pump body helps to improve the working efficiency of the pump. It is widely used in liquid delivery, air conditioning system, water treatment, fire fighting and other industries.

[0003] According to a front suction type centrifugal pump (public number: CN 221683205 U) including pump body, impeller, machine seal, bearing bracket, front bearing and rear bearing, the pump body is internally installed with a main shaft, one end of the main shaft is fixedly connected with the output end of the motor through a shaft coupling, the front bearing and the rear bearing are both installed on the main shaft, the front bearing is provided with a plane bearing on the side close to the motor, an installation baffle ring is arranged between the plane bearing and the front bearing, and an oil passage is arranged on the installation baffle ring. The utility model sets a plane bearing on the front bearing side of the centrifugal pump, effectively limits the adverse consequences of machine seal damage caused by the movement of the main shaft to the pump suction inlet under the working condition of low lift and large flow, prevents the bearing damage of the front bearing and the rear bearing of the pump due to the frequent front and back movement of the main shaft of the pump, ensures the stability of the rotating part of the centrifugal pump for feeding and pressurizing of the plate and frame filter press, and thus improves the operation quality of the pump.

[0004] In the above application, the air tightness cannot be detected before use through the mutual cooperation between the pump body and the impeller assembly, and accidents may occur due to wear or aging during use, and the effect is not ideal. UTILITY MODEL CONTENTS

[0005] The utility model provides a front suction type centrifugal pump, solves the problem in the above-mentioned document.

[0006] The technical scheme of the utility model is as follows:

[0007] The utility model relates to a front suction type centrifugal pump, which comprises a bottom plate, a centrifugal pump body is fixedly connected to the top of the bottom plate, a suction pipeline is fixedly connected to the side surface of the centrifugal pump body, and a detection device is arranged on the top of the bottom plate.

[0008] The detection device includes a motor, the motor is arranged above the bottom plate, the top of the bottom plate is fixedly connected with a soap box, the side of the motor is fixedly connected with the side of the soap box, the top of the soap box is provided with a liquid inlet, the bottom of the soap box is provided with a liquid outlet, the output shaft of the motor is fixedly connected with a rotating shaft, the circumference of the rotating shaft is fixedly connected with a baffle, the side of the centrifugal pump body is fixedly connected with a first connecting disc, the side of the suction pipe is fixedly connected with a second connecting disc.

[0009] Further, the inside of the first connecting disc is screwed with a bolt, the side of the bolt is fixedly connected with the side of the first connecting disc, the circumference of the bolt is screwed in the inside of the second connecting disc, the circumference of the bolt is screwed with a nut, the side of the nut is fixedly connected with the side of the second connecting disc, which facilitates the fixation of the first connecting disc and the second connecting disc by the bolt and the nut.

[0010] Further, the inside of the first connecting disc is fixedly connected with a first sealing ring, the inside of the second connecting disc is fixedly connected with a second sealing ring, which facilitates the increase of the sealing property of the connection by the first sealing ring and the second sealing ring.

[0011] Further, the top of the bottom plate is provided with a collecting groove, the inside of the collecting groove is fixedly connected with a collecting box, which facilitates the collection of the used soap liquid by the collecting box.

[0012] Further, the first connecting disc and the second connecting disc are located below the liquid outlet, the collecting box is located below the first connecting disc and the second connecting disc, which facilitates the collection of the used soap liquid by the collecting box.

[0013] Further, the top of the bottom plate is provided with a fixing device, the fixing device includes a supporting plate, the bottom of the supporting plate is fixedly connected with the top of the bottom plate, the inside of the supporting plate is rotatably connected with a threaded rod, the circumference of the rotating shaft is fixedly penetrated with a driving bevel gear, the circumference of the threaded rod is fixedly penetrated with a driven bevel gear, the circumference of the driving bevel gear is engaged with the circumference of the driven bevel gear, the circumference of the threaded rod is threadedly connected with a threaded sleeve, the inside of the supporting plate is rotatably connected with a limiting rod, the circumference of the threaded sleeve is fixedly connected with a fixing frame, the bottom of the fixing frame is fixedly connected with a fixing block, the top of the centrifugal pump body is provided with a fixing groove, the side of the fixing block is slidably connected with the inner wall of the fixing groove, which facilitates the rotation of the rotating shaft, the rotation of the threaded rod and the up-and-down movement of the fixing block by the engagement of the driving bevel gear and the driven bevel gear.

[0014] Further, the bottom of the fixed block is provided with a shock absorption groove, and the inside of the shock absorption groove is fixedly connected with buffer cotton, so that the fixed block is prevented from colliding with the centrifugal pump body and causing loss through the buffer cotton.

[0015] Further, the inner wall of the fixed groove is provided with a protection groove, and the inner wall of the protection groove is fixedly connected with protection cotton, so that the fixed groove is prevented from being damaged when the fixed block is inserted.

[0016] Further, the top of the centrifugal pump body is provided with a horizontal groove, and the inside of the horizontal groove is fixedly connected with a level, so that whether the centrifugal pump body is horizontal is observed through the level.

[0017] Further, the number of the fixed blocks and the buffer cotton is two groups, and the fixed blocks are arranged in a linear array at the bottom of the fixed frame; the number of the fixed grooves and the protection cotton is two groups, and the fixed grooves are arranged in a linear array at the top of the centrifugal pump body, so that the fixing effect is increased through the two groups of fixed blocks.

[0018] The working principle and beneficial effects of the utility model are as follows:

[0019] 1. In the utility model, through the cooperation between the motor, the soap box, the rotating shaft, the baffle, the first connecting disc and the second connecting disc in the detection device, when the motor starts, the rotating shaft rotates, the baffle intermittently opens the liquid outlet, when the liquid outlet is opened, the soap solution in the soap box flows to the connecting position of the first connecting disc and the second connecting disc through the liquid outlet, the air tightness is detected by the bubble method, and the used soap solution falls into the collecting box, so that the air tightness detection effect is achieved and the used soap solution is collected.

[0020] 2. In the utility model, through the cooperation between the supporting plate, the threaded rod, the driving bevel gear, the driven bevel gear, the threaded sleeve and the limiting rod in the fixing device, when the motor starts, the rotating shaft rotates, the driving bevel gear and the driven bevel gear are engaged, the rotating shaft drives the threaded rod to rotate when the rotating shaft rotates, the threaded sleeve moves up and down when the threaded rod rotates, the fixed block on the fixed frame moves up and down, the fixed block is inserted into the fixed groove when the fixed block moves up and down, and the centrifugal pump body is fixed, so that the fixing effect is achieved. DRAWINGS

[0021] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0022] Figure 1 It is a structure schematic view of three-dimensional appearance of the utility model;

[0023] Figure 2 It is a structure schematic view of three-dimensional section of the utility model in the second perspective.

[0024] Figure 3 For the utility model Figure 2 The three-dimensional enlarged structure schematic view of A;

[0025] Figure 4 For the utility model Figure 2 The three-dimensional enlarged structure schematic view of B;

[0026] Figure 5 For the utility model Figure 2 The three-dimensional enlarged structure schematic view of C.

[0027] In the figure: 1, bottom plate;2, centrifugal pump body;3, suction duct;4, detection device;41, motor;42, soap box;43, liquid inlet;44, liquid outlet;45, rotating shaft;46, baffle;47, first connecting disc;48, second connecting disc;49, bolt;410, nut;411, first sealing ring;412, second sealing ring;413, collection groove;414, collection box;5, fixing device;51, support plate;52, threaded rod;53, driving bevel gear;54, driven bevel gear;55, threaded sleeve;56, limiting rod;57, fixing frame;58, fixed block;59, fixed groove;510, shock-absorbing groove;511, buffer cotton;512, protection groove;513, protection cotton;514, horizontal groove;515, level. Specific embodiments

[0028] The technical scheme in the embodiments of the utility model will be described below in a clear and complete manner in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are involved in the protection scope of the utility model.

[0029] Embodiment 1

[0030] As Figures 1-5 shown, the present embodiment proposes a front suction type centrifugal pump, including bottom plate 1, the top of bottom plate 1 is fixedly connected with centrifugal pump body 2, the side surface of centrifugal pump body 2 is fixedly connected with suction duct 3, the top of bottom plate 1 is provided with detection device 4;

[0031] The detection device 4 comprises a motor 41 arranged above the bottom plate 1, the top of the bottom plate 1 is fixedly connected with a soap box 42, the side of the motor 41 is fixedly connected with the side of the soap box 42, the top of the soap box 42 is provided with a liquid inlet 43, the bottom of the soap box 42 is provided with a liquid outlet 44, the output shaft of the motor 41 is fixedly connected with a rotating shaft 45, the circumferential surface of the rotating shaft 45 is fixedly connected with a baffle 46, the side of the centrifugal pump body 2 is fixedly connected with a first connecting disc 47, and the side of the suction pipe 3 is fixedly connected with a second connecting disc 48.

[0032] Further, the inside of the first connecting disc 47 is fixedly connected with a bolt 49, the side of the bolt 49 is fixedly connected with the side of the first connecting disc 47, the circumferential surface of the bolt 49 is fixedly screwed in the inside of the second connecting disc 48, the circumferential surface of the bolt 49 is fixedly screwed with a nut 410, and the side of the nut 410 is fixedly connected with the side of the second connecting disc 48, so that the first connecting disc 47 and the second connecting disc 48 are fixed by the bolt 49 and the nut 410.

[0033] Further, the inside of the first connecting disc 47 is fixedly connected with a first sealing ring 411, and the inside of the second connecting disc 48 is fixedly connected with a second sealing ring 412, so that the sealing property of the connection is improved by the first sealing ring 411 and the second sealing ring 412.

[0034] Further, the top of the bottom plate 1 is provided with a collecting groove 413, and the inside of the collecting groove 413 is fixedly connected with a collecting box 414, so that the used soap liquid can be collected by the collecting box 414.

[0035] Further, the first connecting disc 47 and the second connecting disc 48 are located below the liquid outlet 44, and the collecting box 414 is located below the first connecting disc 47 and the second connecting disc 48, so that the used soap liquid can be collected by the collecting box 414.

[0036] In this embodiment, when the sealing property of the centrifugal pump body 2 and the suction pipe 3 needs to be detected, first, the nut 410 is screwed to fix the first connecting disc 47 and the second connecting disc 48, and then the motor 41 is started, when the motor 41 is started, the rotating shaft 45 on the output shaft of the motor 41 rotates clockwise, when the rotating shaft 45 rotates clockwise, the baffle 46 on the rotating shaft 45 intermittently opens the liquid outlet 44, when the liquid outlet 44 is opened, the soap liquid in the soap box 42 flows at the closed part of the first connecting disc 47 and the second connecting disc 48 through the liquid outlet 44, and the detection is carried out by the foam method, when the rotating shaft 45 rotates counterclockwise, the baffle 46 on the rotating shaft 45 intermittently opens the liquid outlet 44, when the liquid outlet 44 is opened, the soap liquid in the soap box 42 flows at the closed part of the first connecting disc 47 and the second connecting disc 48 through the liquid outlet 44, and the detection is carried out by the foam method.

[0037] Embodiment 2

[0038] As Figures 1-5 shown, on the premise of the same concept as the above embodiment 1, a second embodiment is also proposed, the top of the bottom plate 1 is provided with a fixing device 5, the fixing device 5 comprises a supporting plate 51, the bottom of the supporting plate 51 is fixedly connected to the top of the bottom plate 1, a threaded rod 52 is rotatably connected inside the supporting plate 51, a driving bevel gear 53 is fixedly penetrated on the circumferential surface of the rotating shaft 45, a driven bevel gear 54 is fixedly penetrated on the circumferential surface of the threaded rod 52, the circumferential surface of the driving bevel gear 53 is engaged with the circumferential surface of the driven bevel gear 54, a threaded sleeve 55 is threadedly connected on the circumferential surface of the threaded rod 52, a limiting rod 56 is rotatably connected inside the supporting plate 51, a fixing frame 57 is fixedly connected on the circumferential surface of the threaded sleeve 55, a fixing block 58 is fixedly connected to the bottom of the fixing frame 57, a fixing groove 59 is opened at the top of the centrifugal pump body 2, the side surface of the fixing block 58 is slidably connected to the inner wall of the fixing groove 59, which is beneficial to rotating the threaded rod 52 by the engagement of the driving bevel gear 53 and the driven bevel gear 54 when the rotating shaft 45 rotates, and moving the fixing block 58 up and down by the threaded sleeve 55 when the threaded rod 52 rotates, so that the fixing block 58 is inserted into the fixing groove 59.

[0039] Further, the bottom of the fixing block 58 is provided with a shock absorption groove 510, and the inside of the shock absorption groove 510 is fixedly connected with buffer cotton 511, which is beneficial to preventing the fixing block 58 from colliding with the centrifugal pump body 2 by the buffer cotton 511, thereby causing loss.

[0040] Further, the inner wall of the fixing groove 59 is provided with a protection groove 512, and the inner wall of the protection groove 512 is fixedly connected with protection cotton 513, which is beneficial to preventing the fixing groove 59 from being damaged when the fixing block 58 is inserted by the protection cotton 513.

[0041] Further, the top of the centrifugal pump body 2 is provided with a horizontal groove 514, and the inside of the horizontal groove 514 is fixedly connected with a level 515, which is beneficial to observing whether the centrifugal pump body 2 is horizontal by the level 515.

[0042] Further, the number of the fixing block 58 and the buffer cotton 511 is set to two groups, and is arranged in a linear array at the bottom of the fixing frame 57, and the number of the fixing groove 59 and the protection cotton 513 is set to two groups, and is arranged in a linear array at the top of the centrifugal pump body 2, which is beneficial to increasing the fixing effect by the two groups of fixing blocks 58.

[0043] In the embodiment, in use, in order to avoid loosening or displacement caused by vibration in operation, the centrifugal pump cannot work normally, the centrifugal pump needs to be fixed, first, the motor 41 is started, when the motor 41 is started, the rotating shaft 45 on the output shaft of the motor 41 rotates clockwise, when the rotating shaft 45 rotates clockwise, the rotating shaft 45 drives the threaded rod 52 to rotate clockwise through the meshing of the driving bevel gear 53 and the driven bevel gear 54, when the threaded rod 52 rotates clockwise, the threaded sleeve 55 on the threaded rod 52 moves horizontally downwards, when the threaded sleeve 55 moves horizontally downwards, the fixing frame 57 on the threaded sleeve 55 moves horizontally downwards, when the fixing frame 57 moves horizontally downwards, the fixing block 58 is inserted into the fixing groove 59, the centrifugal pump body 2 is fixed, when the rotating shaft 45 rotates counterclockwise, the rotating shaft 45 drives the threaded rod 52 to rotate counterclockwise through the meshing of the driving bevel gear 53 and the driven bevel gear 54, when the threaded rod 52 rotates counterclockwise, the threaded sleeve 55 on the threaded rod 52 moves horizontally upwards, when the threaded sleeve 55 moves horizontally upwards, the fixing frame 57 on the threaded sleeve 55 moves horizontally upwards, when the fixing frame 57 moves horizontally upwards, the fixing block 58 is separated from the fixing groove 59, at this time, the centrifugal pump body 2 cannot be fixed.

[0044] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A forward suction centrifugal pump, characterized in that: It comprises a bottom plate (1), the top of the bottom plate (1) is fixedly connected to a centrifugal pump body (2), the side of the centrifugal pump body (2) is fixedly connected to a suction pipe (3), and the top of the bottom plate (1) is provided with a detection device (4); The detection device (4) comprises a motor (41), the motor (41) being arranged above a base plate (1), the top of the base plate (1) being fixedly connected to a soap box (42), the side of the motor (41) being fixedly connected to the side of the soap box (42), the top of the soap box (42) being provided with a liquid inlet (43), the bottom of the soap box (42) being provided with a liquid outlet (44), the output shaft of the motor (41) being fixedly connected to a rotating shaft (45), the circumferential surface of the rotating shaft (45) being fixedly connected to a baffle (46), the side of the centrifugal pump body (2) being fixedly connected to a first connecting disk (47), and the side of the suction pipe (3) being fixedly connected to a second connecting disk (48).

2. A forward suction centrifugal pump according to claim 1, characterized in that: The first connecting plate (47) is internally threadedly fixed with a bolt (49), the side of the bolt (49) is fixedly connected to the side of the first connecting plate (47), the circumferential surface of the bolt (49) is threadedly fixed to the interior of the second connecting plate (48), the circumferential surface of the bolt (49) is threadedly fixed with a nut (410), and the side of the nut (410) is fixedly connected to the side of the second connecting plate (48).

3. A forward suction centrifugal pump according to claim 2, characterized in that: A first sealing ring (411) is fixedly connected to the interior of the first connecting disk (47), and a second sealing ring (412) is fixedly connected to the interior of the second connecting disk (48).

4. A forward suction centrifugal pump according to claim 3, characterized in that: A collecting trough (413) is provided on the top of the bottom plate (1), and a collecting box (414) is fixedly connected to the interior of the collecting trough (413).

5. A forward suction centrifugal pump according to claim 4, characterized in that: The first connecting disk (47) and the second connecting disk (48) are located below the liquid outlet (44), and the collecting box (414) is located below the first connecting disk (47) and the second connecting disk (48).

6. A forward suction centrifugal pump according to claim 5, characterized in that: A fixing device (5) is provided on the top of the base plate (1), and the fixing device (5) comprises a support plate (51), the bottom of the support plate (51) is fixedly connected to the top of the base plate (1), a threaded rod (52) is rotatably connected inside the support plate (51), a driving bevel gear (53) is fixedly passed through the circumferential surface of the rotating shaft (45), a driven bevel gear (54) is fixedly passed through the circumferential surface of the threaded rod (52), and the circumferential surface of the driving bevel gear (53) is aligned with the circumferential surface of the driven bevel gear (54). The circumferential surfaces of the wheels (54) are meshed with each other, a threaded sleeve (55) is threadedly connected to the circumferential surface of the threaded rod (52), a limit rod (56) is rotatably connected to the inside of the support plate (51), a fixing frame (57) is fixedly connected to the circumferential surface of the threaded sleeve (55), a fixing block (58) is fixedly connected to the bottom of the fixing frame (57), a fixing groove (59) is opened at the top of the centrifugal pump body (2), and the side of the fixing block (58) is slidably connected to the inner wall of the fixing groove (59).

7. A forward suction centrifugal pump according to claim 6, characterized in that: A shock absorbing groove (510) is provided at the bottom of the fixing block (58), and a buffer cotton (511) is fixedly connected to the interior of the shock absorbing groove (510).

8. A forward suction centrifugal pump according to claim 7, characterized in that: A protective groove (512) is provided on the inner wall of the fixing groove (59), and protective cotton (513) is fixedly connected to the inner wall of the protective groove (512).

9. A forward suction centrifugal pump according to claim 8, characterized in that: A horizontal groove (514) is provided on the top of the centrifugal pump body (2), and a spirit level (515) is fixedly connected to the interior of the horizontal groove (514).

10. A forward suction centrifugal pump according to claim 9, characterized in that: The number of the fixing blocks (58) and the buffer cotton (511) is set to two groups and is arranged along a linear array at the bottom of the fixing frame (57); the number of the fixing grooves (59) and the protective cotton (513) is set to two groups and is arranged along a linear array at the top of the centrifugal pump body (2).

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