Vertical multi-stage centrifugal pump and constant-pressure water supply unit

Abstract

The invention belongs to the technical field of constant-pressure water supply units, and particularly relates to a vertical multi-stage centrifugal pump which comprises a centrifugal pump body and a placement pipe, a water inlet of the centrifugal pump body is connected with the placement pipe through a butterfly valve, a through groove is formed in the upper side of the placement pipe, and the through groove is in butt joint with a cover plate. According to the vertical multi-stage centrifugal pump and the constant-pressure water supply unit, when water flow enters the centrifugal pump body through the placement pipe, the filtering cone plate can filter the water flow, so that the filtering cone plate can intercept solid particles carried by the water flow, the vertical multi-stage centrifugal pump is not prone to sucking the solid particles, the stable performance of the vertical multi-stage centrifugal pump is conveniently kept, and the service life of the vertical multi-stage centrifugal pump is prolonged. When the fixed particles in the water flow are taken out, the air cylinder is started, the cover plate can move upwards and rotate at the same time, the cover plate is rapidly opened to clean the solid particles, the downtime of the vertical multi-stage centrifugal pump can be shortened, and the maintenance cost of the constant-pressure water supply unit is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of constant pressure water supply units, in particular to a vertical multi-stage centrifugal pump and a constant pressure water supply unit. Background Art

[0002] Constant pressure water supply unit is a water supply equipment used to provide stable water pressure. It is widely used in high-rise buildings, residential areas, industrial facilities and other places. Constant pressure water supply unit automatically adjusts the output pressure of the water supply system to ensure that the water pressure remains constant when the water demand fluctuates. In the constant pressure water supply unit, the vertical multi-stage centrifugal pump is often used as one of the core components. Its high head and stability enable it to provide strong hydraulic support in the system, and the frequency converter controls the speed of the pump to maintain the pressure of the system stable. The vertical multi-stage centrifugal pump provides high head and large flow, while the constant pressure water supply unit ensures stable water pressure through the frequency conversion speed regulation system;

[0003] By combining the high-lift characteristics of the vertical multistage centrifugal pump and the pressure regulation function of the constant-pressure water supply unit, a stable water pressure can be maintained during peak water usage. The vertical multistage centrifugal pump relies on centrifugal force to introduce liquid from the suction port into the pump body, and gradually increases the pressure of the liquid through each pump impeller to eventually reach the required high lift. Since the impeller, pump casing, seals and other components of the vertical multistage centrifugal pump are highly dependent on water flow during high-speed operation, if the water source contains impurities, the vertical multistage centrifugal pump will inhale solid particles, causing the impurities to hit the metal parts inside the pump, causing the metal parts to wear, affecting the performance of the centrifugal pump, and reducing its efficiency. Therefore, we proposed a vertical multistage centrifugal pump and a constant-pressure water supply unit. Summary of the invention

[0004] The object of the present invention is to provide a vertical multi-stage centrifugal pump and a constant pressure water supply unit to solve the problem mentioned in the background technology that when the water source contains impurities, the vertical multi-stage centrifugal pump will suck in solid particles, causing the solid particles to collide with the metal parts inside the pump, which may easily cause wear of the metal parts and affect the performance of the centrifugal pump.

[0005] To achieve the above object, the present invention provides the following technical solutions: a vertical multistage centrifugal pump, comprising a centrifugal pump body and a placement pipe, wherein the water inlet of the centrifugal pump body is connected to the placement pipe through a butterfly valve, a through groove is provided on the upper side of the placement pipe, and the through groove is connected to a cover plate, a connection pad is bonded to a side of the cover plate close to the through groove, a water wheel is installed on the inner side of the placement pipe, and a side of the placement pipe close to the water wheel is connected to a filter cone plate, and a synchronization component is provided in the middle of the water wheel;

[0006] The synchronous assembly includes two synchronous wheels and a synchronous belt. The synchronous wheel on one side of the synchronous assembly is connected to the middle part of the water wheel through a shaft rod, and the synchronous wheel on the other side of the synchronous assembly is fixed to a gear disc 1 through a shaft rod. The gear disc 1 is connected to a gear ring body, and the gear ring body is movably connected to a filter cone plate through a bearing. One side of the gear ring body is connected to one end of a support rod, and the other end of the support rod is movably connected to a roller brush through a bearing.

[0007] Preferably, one end of the roller brush away from the gear ring body is fixed to the convex gear, and the convex gear is connected to the convex gear ring, and the outer side of the convex gear and the outer side of the convex gear ring are respectively bonded with a second connecting pad.

[0008] Preferably, an internally threaded tube is fixed to a side of the filter cone plate close to the convex tooth ring, and the internally threaded tube is connected to the externally threaded tube, and a filter cover is fixed to a side of the externally threaded tube away from the filter cone plate.

[0009] Preferably, a connecting plate is fixed to the side of the external threaded tube away from the filter cover, and a connecting pad three is bonded to the outer side of the connecting plate.

[0010] Preferably, the upper side of the cover plate is movably connected to the lower end of the connecting rod through a rotating seat, and the upper end of the connecting rod is connected to the output end of the cylinder through a support plate, and the lower end of the cylinder is fixed to the placement pipe.

[0011] Preferably, a connecting frame is fixed to one side of the connecting rod, and the inner side of the connecting frame is slidably docked with the butt joint, and the lower side of the butt joint is fixed to one end of the slide.

[0012] Preferably, a sliding groove is provided on one side of the cover plate close to the slide, and the lower end of the slide is slidably connected to the sliding groove, and the inner side of the connecting tube is connected to the screw rod.

[0013] Preferably, the upper end of the screw is fixed to bevel gear one, bevel gear one is connected to bevel gear two, and one side of bevel gear two is fixed to gear disc two through a shaft.

[0014] Preferably, the screw, bevel gear one and bevel gear two are movably connected to the connecting rod through a bearing seat respectively, and a toothed plate is fixed on one side of the cylinder close to toothed disc two.

[0015] A constant pressure water supply unit comprises a water supply unit main body, on which a vertical multi-stage centrifugal pump is installed.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: when the water flows into the centrifugal pump body through the installation pipe, the filter cone plate can filter the water flow, so that the filter cone plate can intercept the solid particles carried by the water flow, making it difficult for the vertical multi-stage centrifugal pump to inhale solid particles, making it easy for the vertical multi-stage centrifugal pump to maintain stable performance and not easy to reduce efficiency. When taking out the fixed particles in the water flow, the cylinder is started so that the cover plate can move up and rotate at the same time. By quickly opening the cover plate to clean the solid particles, the downtime of the vertical multi-stage centrifugal pump can be reduced, and the maintenance cost of the constant pressure water supply unit can be reduced.

[0017] 1. When the vertical multi-stage centrifugal pump and the constant pressure water supply unit are installed and used, the installation pipe and the centrifugal pump body are first installed together, and then the water supply unit body is started, so that the water flows into the centrifugal pump body through the installation pipe. At this time, the filter cone plate can filter the water flow, and the roller brush rotates to clean the filter cone plate at the same time. When the roller brush sweeps the solid particles, the water flow drives the solid particles into the inside of the filter cover at the same time, so that the filter cover can collect the solid particles in a centralized manner, and the connecting plate is rotated so that the external threaded pipe drives the filter cover to separate from the filter cone plate. The filter cover can be taken out through the through slot to clean the solid particles. The vertical multi-stage centrifugal pump is not easy to inhale solid particles, so that the vertical multi-stage centrifugal pump is easy to maintain stable performance and is not easy to reduce efficiency;

[0018] 2. For the vertical multi-stage centrifugal pump and constant pressure water supply unit, when the staff needs to open the cover plate to take out the fixed particles in the water flow, the cylinder is started to make the output end of the cylinder drive the cover plate to move up, and at the same time, one end of the cover plate rotates upward, so that when the cover plate is separated from the through groove, the cover plate can move up and rotate at the same time, so that the cover plate is not easy to affect the staff to take out the solid particles carried by the water flow through the through groove. The staff can quickly open the cover plate to clean the solid particles, which can reduce the downtime of the vertical multi-stage centrifugal pump and reduce the maintenance cost of the constant pressure water supply unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the water supply unit body, the centrifugal pump body and their connection structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the placement pipe, water wheel and their connection structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the water wheel, filter cone plate and their connection structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the externally threaded pipe, the filter cover and their connection structure of the present invention;

[0023] Figure 5 It is a schematic diagram of the connecting rod, the cylinder and the connection structure thereof of the present invention;

[0024] Figure 6 For the present invention Figure 4 A schematic diagram of the partially enlarged structure at B in the middle;

[0025] Figure 7 For the present invention Figure 5 Schematic diagram of the partial enlarged structure at point C in the middle.

[0026] In the figure: 1. water supply unit body; 101. centrifugal pump body; 2. placement pipe; 201. through groove; 202. cover plate; 203. connection pad one; 3. water wheel; 301. filter cone plate; 302. synchronization component; 303. toothed disc one; 304. toothed ring body; 3041. support rod; 305. roller brush; 306. convex gear; 307. convex toothed ring; 308. connection pad two; 309. internal threaded pipe; 310. external threaded pipe; 311. filter cover; 312. connection plate; 313. connection pad three; 4. connecting rod; 401. cylinder; 402. connecting frame; 403. butt pipe; 404. slide frame; 405. slide groove; 406. screw; 407. bevel gear one; 408. bevel gear two; 409. toothed disc two; 410. toothed plate. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 4 and Figure 6The present invention provides a technical solution: a vertical multistage centrifugal pump, comprising a centrifugal pump body 101 and a placement pipe 2, the water inlet of the centrifugal pump body 101 is connected to the placement pipe 2 through a butterfly valve, a through groove 201 is provided on the upper side of the placement pipe 2, and the through groove 201 is connected to a cover plate 202, a connection pad 203 is bonded to a side of the cover plate 202 close to the through groove 201, a water wheel 3 is installed on the inner side of the placement pipe 2, and the side of the placement pipe 2 close to the water wheel 3 is connected to a filter cone plate 301, a synchronous component 302 is provided in the middle of the water wheel 3, and the synchronous component 302 includes The invention comprises two synchronous wheels and a synchronous belt, wherein the synchronous wheel on one side of the synchronous component 302 is connected to the middle part of the water wheel 3 through a shaft, and the synchronous wheel on the other side of the synchronous component 302 is fixed to the toothed disc 1 303 through a shaft, the toothed disc 1 303 is connected to the gear ring body 304, and the gear ring body 304 is movably connected to the filter cone plate 301 through a bearing, one side of the gear ring body 304 is connected to one end of a support rod 3041, and the other end of the support rod 3041 is movably connected to a roller brush 305 through a bearing, and the end of the roller brush 305 away from the gear ring body 304 is connected to the convex gear 3 06 are fixed, and the convex gear 306 is connected to the convex tooth ring 307, and the outer side of the convex gear 306 and the outer side of the convex tooth ring 307 are respectively bonded with a connecting pad 2 308, an internal threaded tube 309 is fixed to the side of the filter cone plate 301 close to the convex tooth ring 307, and the internal threaded tube 309 is connected to the external threaded tube 310, and a filter cover 311 is fixed to the side of the external threaded tube 310 away from the filter cone plate 301, and a connecting plate 312 is fixed to the side of the external threaded tube 310 away from the filter cover 311, and a connecting pad 313 is bonded to the outer side of the connecting plate 312 ... Pad 1 203 is made of deformable rubber material, and connecting pad 1 203 is squeezed against through groove 201, the synchronous wheel of synchronous assembly 302 is meshed and docked with the synchronous belt, toothed disc 1 303 is meshed and docked with the gear ring body 304, the roller brush 305 is squeezed against the inner side of the filter cone plate 301, connecting pad 2 308 is made of deformable rubber material, and the two connecting pads 2 308 are squeezed against each other, the internal threaded tube 309 is threadedly connected with the external threaded tube 310, and connecting pad 313 is made of deformable rubber material, and connecting pad 313 is squeezed against the filter cone plate 301.

[0029] In specific implementation, according to Figure 1-Figure 4 and Figure 6When the vertical multi-stage centrifugal pump is installed and used, the installation pipe 2 is first installed with the centrifugal pump body 101, and then the water supply unit body 1 is started, so that the water flows into the centrifugal pump body 101 through the installation pipe 2, and the connection pad 203 is made of a deformable rubber material, and the connection pad 203 is squeezed with the through groove 201, so that the connection pad 203 and the through groove 201 form a sealed state, so that the water flow will not leak through the installation pipe 2. At this time, the filter cone plate 301 can filter the water flow, so that the filter cone plate 301 can intercept the solid particles carried by the water flow, and at the same time, the water flow drives the water wheel 3 to rotate, so that the water wheel 3 can drive the synchronous wheel on one side of the synchronous component 302 to rotate through the shaft rod, and the synchronous wheel of the synchronous component 302 is meshed with the synchronous belt. The water wheel 3 is connected to the synchro component 302 to drive the toothed disc 1 303 to rotate, and then the toothed disc 1 303 is meshed with the toothed ring body 304, so that the toothed disc 1 303 can push the toothed ring body 304 to rotate, so that the toothed ring body 304 drives the roller brush 305 to move along the filter cone plate 301 through the support rod 3041, and the roller brush 305 is squeezed with the inner side of the filter cone plate 301, so that the roller brush 305 can push the solid particles trapped by the filter cone plate 301 to prevent the solid particles from clogging the filter cone plate 301, and when the roller brush 305 moves along the filter cone plate 301, it drives the convex gear 306 to move along the convex toothed ring 307, and the connection pad 313 is made of deformable rubber material, and the connection pad 313 is connected to the filter cone plate 301. The convex tooth ring 307 is squeezed, so that the convex gear ring 307 can push the convex gear 306 to rotate, thereby allowing the roller brush 305 to rotate itself. At this time, the direction of rotation of the roller brush 305 itself is the same as the direction in which the roller brush 305 moves along the filter cone plate 301, thereby enhancing the cleaning effect of the roller brush 305 on the filter cone plate 301, and when the roller brush 305 sweeps the solid particles, the water flow simultaneously drives the solid particles to move, so that the solid particles can enter the interior of the filter cover 311, so that the filter cover 311 can collect the solid particles in a centralized manner. When the solid particles inside the filter cover 311 need to be cleaned, the cover plate 202 is opened to expose the through groove 201. At this time, the staff's hand can be inserted into the placement tube 2 through the through groove 201, so that the staff can pinch the connecting plate 312 to rotate, At this time, the connecting plate 312 drives the external threaded tube 310 to rotate, and the internal threaded tube 309 is threadedly connected with the external threaded tube 310, so that the external threaded tube 310 can be separated from the internal threaded tube 309, so that the external threaded tube 310 drives the filter cover 311 to separate from the filter cone plate 301, and then the filter cover 311 is taken out through the through groove 201 to clean the solid particles. When the filter cover 311 is reinstalled with the filter cone plate 301, the connecting plate 312 drives the connecting pad 313 to be squeezed with the filter cone plate 301. The connecting pad 313 adopts a deformable rubber material to prevent the water flow from loosening the external threaded tube 310, so that when the constant pressure water supply unit is in operation, the vertical multi-stage centrifugal pump is not easy to inhale solid particles, so that the vertical multi-stage centrifugal pump is easy to maintain stable performance.It is not easy to reduce efficiency.

[0030] See also Figure 1 , Figure 2 , Figure 5 and Figure 7 The upper side of the cover plate 202 is movably connected to the lower end of the connecting rod 4 through a rotating seat, and the upper end of the connecting rod 4 is connected to the output end of the cylinder 401 through a support plate, the lower end of the cylinder 401 is fixed to the placement tube 2, a connecting frame 402 is fixed to one side of the connecting rod 4, and the inner side of the connecting frame 402 is slidably docked with the docking tube 403, the lower side of the docking tube 403 is fixed to one end of the slide 404, a slide groove 405 is provided on the side of the cover plate 202 close to the slide 404, and the lower end of the slide 404 is slidably docked with the slide groove 405, the inner side of the docking tube 403 is docked with the screw 406, the upper end of the screw 406 is fixed to the bevel gear 407, and the bevel gear Wheel 1 407 is connected to bevel gear 2 408, and one side of bevel gear 2 408 is fixed to toothed disc 2 409 through a shaft rod, screw 406, bevel gear 1 407 and bevel gear 2 408 are movably connected to connecting rod 4 through bearing seats respectively, a toothed plate 410 is fixed to one side of cylinder 401 close to toothed disc 2 409, the inner side of connecting frame 402 matches the outer side of docking tube 403, and the cross-sectional shape of docking tube 403 is rectangular, slide 404 matches slide groove 405, docking tube 403 is threadedly connected to screw 406, bevel gear 1 407 is meshingly connected to bevel gear 2 408, and toothed disc 2 409 is meshingly connected to toothed plate 410.

[0031] In specific implementation, according to Figure 1 , Figure 2 , Figure 5 and Figure 7When the staff needs to open the cover plate 202 to take out the fixed particles in the water flow, the cylinder 401 is started, and the output end of the cylinder 401 drives the connecting rod 4 to move up through the support plate. At this time, the connecting rod 4 drives the cover plate 202 to move up, and at the same time, the connecting rod 4 drives the gear plate 2 409 to move up and engage with the gear plate 410. At this time, the gear plate 410 can push the gear plate 2 409 to rotate, so that the gear plate 2 409 can drive the bevel gear 2 408 to rotate, and then the bevel gear 1 407 and the bevel gear 2 are connected. The bevel gear 407 is meshed with the bevel gear 408, so that the bevel gear 407 can rotate with the bevel gear 408, so that the bevel gear 407 drives the screw 406 to rotate, and the inner side of the connecting frame 402 matches the outer side of the connecting pipe 403, and the cross-sectional shape of the connecting pipe 403 is rectangular, so that the connecting frame 402 can limit the connecting pipe 403 to rotate with the screw 406, and then the connecting pipe 403 is threadedly connected to the screw 406, so that the connecting pipe 403 moves down along the outer side of the screw 406, so that The butt joint 403 drives the slide 404 to move downward to slide and squeeze the slide groove 405, and then the slide 404 matches the slide groove 405, so that the slide 404 is not easy to shake or deviate when sliding along the slide groove 405, so that one end of the cover plate 202 can be stably rotated upward, so that when the cover plate 202 is separated from the through groove 201, the cover plate 202 can move upward and rotate at the same time, so that the cover plate 202 is not easy to affect the staff to take out the solid particles carried by the water flow through the through groove 201. 1 for docking, restart the cylinder 401, make the output end of the cylinder 401 drive the connecting rod 4 to move downward, make the gear plate 209 rotate in the opposite direction again, when the gear plate 209 and the gear plate 410 are disengaged and docked, the cover plate 202 can maintain a horizontal state again, and the cover plate 202 continues to move downward to be stably sealed and docked with the through groove 201, so that the staff can open the cover plate 202 to quickly clean up the solid particles, reduce the downtime of the vertical multi-stage centrifugal pump, and reduce the maintenance cost of the constant pressure water supply unit.

[0032] A constant pressure water supply unit comprises a water supply unit body 1, on which a vertical multi-stage centrifugal pump is installed.

[0033] In summary, the water supply unit body 1 is started, and the water flows through the placement pipe 2 into the centrifugal pump body 101. At this time, the filter cone plate 301 can filter the water flow, so that the filter cone plate 301 can intercept the solid particles carried by the water flow, and at the same time, the roller brush 305 can rotate to clean the filter cone (301), so that when the constant pressure water supply unit is in operation, the vertical multi-stage centrifugal pump is not easy to inhale solid particles, so that the vertical multi-stage centrifugal pump is easy to maintain stable performance and is not easy to reduce efficiency. When removing the fixed particles in the water flow, the cylinder 401 is started, so that the cover plate 202 can be moved up and rotated at the same time. By quickly opening the cover plate 202 to clean the solid particles, the downtime of the vertical multi-stage centrifugal pump can be reduced, and the maintenance cost of the constant pressure water supply unit can be reduced. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vertical multistage centrifugal pump, comprising a centrifugal pump body (101) and a placement pipe (2), characterized in that: The water inlet of the centrifugal pump body (101) is connected to the placement pipe (2) through a butterfly valve; a through groove (201) is provided on the upper side of the placement pipe (2), and the through groove (201) is connected to the cover plate (202); a connection pad (203) is bonded to the side of the cover plate (202) close to the through groove (201); a water wheel (3) is installed on the inner side of the placement pipe (2), and the side of the placement pipe (2) close to the water wheel (3) is connected to the filter cone plate (301); a synchronization component (302) is provided in the middle of the water wheel (3); The synchronous assembly (302) includes two synchronous wheels and a synchronous belt. The synchronous wheel on one side of the synchronous assembly (302) is connected to the middle part of the water wheel (3) through a shaft, and the synchronous wheel on the other side of the synchronous assembly (302) is fixed to a toothed disc (303) through a shaft. The toothed disc (303) is connected to a gear ring body (304), and the gear ring body (304) is movably connected to a filter cone plate (301) through a bearing. One side of the gear ring body (304) is connected to one end of a support rod (3041), and the other end of the support rod (3041) is movably connected to a roller brush (305) through a bearing.

2. A vertical multistage centrifugal pump according to claim 1, characterized in that: One end of the roller brush (305) away from the gear ring body (304) is fixed to the convex gear (306), and the convex gear (306) is connected to the convex gear ring (307), and the outer sides of the convex gear (306) and the outer sides of the convex gear ring (307) are respectively bonded with a second connection pad (308).

3. A vertical multistage centrifugal pump according to claim 1, characterized in that: An internal threaded tube (309) is fixed to the side of the filter cone plate (301) close to the convex tooth ring (307), and the internal threaded tube (309) is connected to the external threaded tube (310), and a filter cover (311) is fixed to the side of the external threaded tube (310) away from the filter cone plate (301).

4. A vertical multistage centrifugal pump according to claim 3, characterized in that: A connecting plate (312) is fixed to the side of the externally threaded tube (310) away from the filter cover (311), and a connecting pad (313) is bonded to the outer side of the connecting plate (312).

5. A vertical multistage centrifugal pump according to claim 1, characterized in that: The upper side of the cover plate (202) is movably connected to the lower end of the connecting rod (4) via a rotating seat, and the upper end of the connecting rod (4) is connected to the output end of the cylinder (401) via a supporting plate, and the lower end of the cylinder (401) is fixed to the placement pipe (2).

6. A vertical multistage centrifugal pump according to claim 5, characterized in that: A connecting frame (402) is fixed to one side of the connecting rod (4), and the inner side of the connecting frame (402) is slidably connected to a butt joint (403), and the lower side of the butt joint (403) is fixed to one end of a sliding frame (404).

7. A vertical multistage centrifugal pump according to claim 6, characterized in that: A sliding groove (405) is provided on one side of the cover plate (202) close to the slide (404), and the lower end of the slide (404) is slidably connected to the sliding groove (405), and the inner side of the connecting tube (403) is connected to the screw rod (406).

8. A vertical multistage centrifugal pump according to claim 7, characterized in that: The upper end of the screw rod (406) is fixed to bevel gear one (407), bevel gear one (407) is connected to bevel gear two (408), and one side of bevel gear two (408) is fixed to toothed disc two (409) through a shaft rod.

9. A vertical multistage centrifugal pump according to claim 8, characterized in that: The screw rod (406), bevel gear one (407) and bevel gear two (408) are movably connected to the connecting rod (4) through bearing seats, and a toothed plate (410) is fixed on one side of the cylinder (401) close to the toothed plate two (409).

10. A constant pressure water supply unit, comprising a water supply unit body (1), characterized in that: The water supply unit body (1) is equipped with a vertical multi-stage centrifugal pump as described in any one of claims 1 to 9.

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