CN113279967A

CN113279967A - Long shaft pump structure

Info

Publication number: CN113279967A
Application number: CN202110670686.5A
Authority: CN
Inventors: 胡永波; 蒋长兴; 杨云; 蒋元成; 徐雪敏; 撖建萍
Original assignee: Jiangsu Changkai Mechanical Equipment Co ltd
Current assignee: Jiangsu Changkai Mechanical Equipment Co ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2021-08-20
Anticipated expiration: 2041-06-16
Also published as: CN113279967B

Abstract

The invention provides a long shaft pump structure, which comprises a pump body, a pump shell, an impeller and a pump shaft, wherein the bottom of the pump shell is connected with a filtering device, the filtering device comprises a filtering chamber, a first filtering net group, a second filtering net group, a first bevel gear, a second bevel gear, a cam and a connecting rod, the top of the filtering chamber is provided with a channel communicated with the pump shell, the bottom end of the pump shaft is provided with the first bevel gear, the filtering chamber is rotatably connected with a rotating cross shaft, the end part of the rotating cross shaft is connected with the second bevel gear, the rotating cross shaft is also connected with the cam, a connecting groove is arranged along the circumferential direction of the cam, the top end of the connecting rod is slidably connected in the connecting groove, the bottom end of the connecting rod penetrates through the first filtering net group to be connected with the second filtering net group, the first filtering net group is arranged at a bottom water inlet close to the filtering chamber, the periphery of the second filtering net group is provided with an annular sealing plate, and the bottom end of the filtering chamber is also provided with an annular chute longitudinally slidably matched with the annular sealing plate, the anti-blocking filter has better anti-blocking effect and can realize high-efficiency filtration.

Description

Long shaft pump structure

Technical Field

The invention relates to a long shaft pump structure.

Background

The long-shaft pump belongs to one of centrifugal pumps, is improved in the performance of an underwater pump from the perspective of the centrifugal pump, and is suitable for conveying clear water, rainwater, ferric oxide scale water, sewage, corrosive industrial wastewater, seawater and other liquids; the wide application is in industrial and mining enterprises such as running water company, sewage treatment plant, power plant, iron and steel plant, mine to and municipal water supply and drainage, engineering such as flood control drainage, and under many occasions, in order to avoid the inside jam that causes of long-axis pump, when extracting sewage, generally need filter sewage, current filtration is only one deck filter screen, and the filter effect is not good, and easily block up inside the mesh leads to water can not get into the pump machine, influences the use.

A novel long-shaft pump (with the publication number of CN201386664Y) comprises a pump shell and a pump frame, wherein a water inlet end and a water outlet are arranged on the pump shell, a pump shaft is arranged in the pump shell, the water inlet end is sequentially provided with a multi-stage straight pipe and a fluid director in series, the front end of the pump shaft is sequentially connected with a multi-stage transition shaft in series, the pump shaft is connected with the transition shaft and the adjacent transition shaft through couplings, and a bearing support is arranged between each transition shaft and the straight pipe for supporting; the flow deflectors are bowl-shaped, impeller seats are arranged on transition shafts positioned in the flow deflectors, blades are arranged on the impeller seats, and the blades are positioned at the front ends of the adjacent flow deflectors; the front end of the fluid director at the top is provided with a water inlet bell mouth. The utility model discloses its maximum flow can reach 5900m3/h, and the lift is up to 365m, and sealing performance further improves, and the pump operates steadily for a long time, but it still has the filterable problem of the aforesaid mentioning.

Therefore, a long shaft pump structure which has better anti-blocking effect and can realize high-efficiency filtration is urgently needed.

Disclosure of Invention

The invention aims to provide a long-shaft pump structure which is better in anti-blocking effect and capable of realizing efficient filtration.

The invention provides the following technical scheme:

a long shaft pump structure comprises a pump body, a pump shell positioned at the bottom of the pump body, a pump shaft positioned in the pump body and used for driving an impeller in the pump shell to pump water in a rotating manner, a water outlet pipe is arranged at one side of the pump shell, a filtering device is connected at the bottom of the pump shell and comprises a filtering chamber, a first filtering net group, a second filtering net group, a first bevel gear, a second bevel gear, a cam and a connecting rod, wherein the filtering chamber is arranged at the bottom of the pump shell, a channel communicated with the pump shell is arranged at the top of the filtering chamber, the first bevel gear is arranged at the bottom end of the pump shaft, at least two groups of rotating transverse shafts are connected in the filtering chamber in a rotating manner, the end parts of the rotating transverse shafts are connected with the second bevel gear in a meshing transmission manner, the cam is also connected onto the rotating transverse shafts, first filter screen group installs in the bottom water inlet that is close to the filter chamber, and the periphery of second filter screen group is provided with annular shrouding, and the bottom of filter chamber still is seted up with annular shrouding longitudinal sliding fit's annular spout.

Preferably, first filter screen group includes first rack, the slip sealing ring, first filter screen, the guide bar, the pressure spring, the below that the connecting rod passed first rack still is provided with promotes the piece, still be provided with on the first rack and be used for filtering the first filter screen of isolation, the periphery of first rack still is provided with the slip sealing ring of sliding connection in the filter chamber inside groove, be fixed with the uide bushing in the filter chamber, longitudinally fixed with the guide bar of direction cooperation in the uide bushing on the first rack, and the guide bar is outer still to be compressed to have and is located the pressure spring between uide bushing and the first rack.

Preferably, the first net rack comprises two groups of framework units distributed in a cross shape.

Preferably, the second filter screen group comprises a second net rack and a second filter screen arranged on the second filter screen rack, and the outer side of the second filter screen is connected in the annular closing plate.

Preferably, the rotating transverse shaft is distributed around the periphery of the first bevel gear in a cross shape.

Preferably, a row of waste pipes are further connected to the filter chamber between the first filter screen group and the second filter screen group, and extend out of the filter chamber to be connected with the electromagnetic valve.

Preferably, a sealing ring is arranged in the annular chute and is positioned on the inner side and the outer side of the annular sealing plate for sealing.

Preferably, the filter chamber and the pump casing are detachably connected through bolts.

The invention has the beneficial effects that:

1. the bottom of the pump shell is connected with the filtering chamber, the impeller and the first bevel gear can be driven to rotate by the rotation of the pump shaft, the second filtering net set can reciprocate in the longitudinal direction by the matching of the second bevel gear, the cam and the connecting rod, and the movement direction is consistent with the direction of the filtering through hole, so that the blockage of the filtering through hole can be effectively avoided, and the filtering efficiency is improved;

2. through addding first filter screen group in the filter chamber, the liquid through second filter screen group can enter into the filter chamber under the further filtration of first filter screen group to can further improvement filter effect.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a structural cross-sectional view of the present invention;

FIG. 2 is a structural cross-sectional view of a first screen pack;

notation in the figure: the pump comprises a pump body 1, a pump shell 2, an impeller 3, a pump shaft 4, a water outlet pipe 5, a filter chamber 6, a first filter screen set 7, a second filter screen set 8, a first bevel gear 9, a second bevel gear 10, a cam 11, a connecting rod 12, a channel 13, a rotating transverse shaft 14, a connecting groove 15, a water inlet 16, an annular sealing plate 17, an annular sliding groove 18, a sealing ring 19, a waste discharge pipe 20, an electromagnetic valve 21, a first net rack 71, a sliding sealing ring 72, a first filter screen 73, a guide rod 74, a pressure spring 75, a pushing block 76 and a guide sleeve 77.

Detailed Description

Example 1

As shown in fig. 1 and 2, in this embodiment, the long shaft pump structure includes a pump body 1, a pump casing 2 located at the bottom of the pump body 1, and a pump shaft 4 located in the pump body and capable of driving an impeller 3 in the pump casing 2 to rotationally pump water, a water outlet pipe 5 is disposed at one side of the pump casing 2, a filtering device is connected to the bottom of the pump casing 2, the filtering device includes a filtering chamber 6, a first filtering net set 7, a second filtering net set 8, a first bevel gear 9, a second bevel gear 10, a cam 11, and a connecting rod 12, the filtering chamber 6 is mounted at the bottom of the pump casing 2, a channel 13 penetrating the pump casing 2 is disposed at the top of the filtering chamber, the first bevel gear 9 is mounted at the bottom of the pump shaft 4, four groups of rotating transverse shafts 14 are rotatably connected to the filtering chamber 6, the end of the rotating transverse shaft 14 is connected to the second bevel gear 10 in meshing transmission with the first bevel gear 9, the cam 11 is further connected to the rotating transverse shaft 14, a connecting groove 15 is formed along the circumferential direction of the cam 11, the top sliding connection of connecting rod 12 is in spread groove 15, and its bottom passes first filter screen group 7 and links to each other with second filter screen group 8, and first filter screen group installs in the bottom water inlet 16 that is close to filter chamber 6, and the periphery of second filter screen group 8 is provided with annular shrouding 17, and annular spout 18 with annular shrouding 17 vertical sliding fit has still been seted up to the bottom of filter chamber 6. The rotary transverse shaft 14 is distributed around the periphery of the first bevel gear 9 in a cross shape. Sealing rings 19 are arranged in the annular sliding groove 18 and are positioned on the inner side and the outer side of the annular sealing plate 17 for sealing. The filter chamber 6 is detachably connected with the pump shell 2 through bolts.

Example 2

As shown in fig. 1 and 2, in the present embodiment, the difference from embodiment 1 is that the first filter screen group 7 includes a first screen frame 71, a sliding seal ring 72, a first filter screen 73, a guide rod 74 and a pressure spring 75, the connecting rod 12 further includes a pushing block 76 below the first screen frame 71, the first screen frame 71 is further provided with a first filter screen 73 for filtering and isolating, the periphery of the first screen frame 71 is further provided with a sliding seal ring 72 slidably connected in an inner groove of the filter chamber 6, a guide sleeve 77 is fixed in the filter chamber 6, the first screen frame 71 is longitudinally fixed with the guide rod 74 guided and fitted in the guide sleeve 77, and the pressure spring 75 positioned between the guide sleeve 77 and the first screen frame 71 is compressed outside the guide rod 74. The first net mount 71 includes two sets of framework units distributed in a cross shape. The second filter screen group 8 comprises a second screen frame and a second filter screen arranged on the second filter screen frame, and the outer side of the second filter screen is connected in the annular sealing plate 17; therefore, on the basis that the second filter screen group 8 can do longitudinal reciprocating motion along with the rotation of the pump shaft 4, the second filter screen group 8 can be impacted by the pushing block 76 on the connecting rod 12 at a certain frequency, and can do longitudinal reciprocating motion under the pushing of the pushing block 76 and the pushing of the pressure spring 75, so that the blockage of the first filter screen 73 in the first filter screen group 7 can be avoided more effectively.

Example 3

As shown in fig. 1 and 2, the major axis pump structure in this embodiment is different from embodiment 1 in that, in order to ensure that the impurities mixed between the first filter screen set 7 and the second filter screen set 8 can be discharged in time, a waste discharge pipe 20 is communicated with the filter chamber 6 between the first filter screen set 7 and the second filter screen set 8, the waste discharge pipe 20 extends out of the filter chamber 6 and is connected with an electromagnetic valve 21, so that the impurities mixed between the first filter screen set 7 and the second filter screen set 8 can be discharged by opening the electromagnetic valve 21.

The working principle of the invention is as follows: the bottom of the pump shell 2 is connected with the filtering chamber 6, the pump shaft 4 rotates to drive the impeller 3 and the first bevel gear 9 to rotate, and the second filtering net group 8 can reciprocate in the longitudinal direction through the matching of the second bevel gear 10, the cam 11 and the connecting rod 12, and the movement direction is consistent with the direction of the filtering through holes, so that the filtering through holes can be effectively prevented from being blocked, and the filtering efficiency is improved; by additionally arranging the first filter screen group 7 in the filter chamber 6, the liquid passing through the second filter screen group 8 can enter the filter chamber 6 under the further filtration of the first filter screen group 7, so that the filtering effect can be further improved.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A long shaft pump structure is characterized by comprising a pump body, a pump shell positioned at the bottom of the pump body, and a pump shaft positioned in the pump body and used for driving an impeller in the pump shell to pump water in a rotating manner, wherein a water outlet pipe is arranged at one side of the pump shell, the bottom of the pump shell is connected with a filtering device, the filtering device comprises a filtering chamber, a first filtering net group, a second filtering net group, a first bevel gear, a second bevel gear, a cam and a connecting rod, the filtering chamber is installed at the bottom of the pump shell, a channel communicated with the pump shell is arranged at the top of the filtering chamber, the bottom of the pump shaft is provided with the first bevel gear, at least two groups of rotating transverse shafts are rotatably connected in the filtering chamber, the end parts of the rotating transverse shafts are connected with the second bevel gear in meshing transmission with the first bevel gear, the rotating transverse shafts are also connected with the cam, and a connecting groove is formed in the circumferential direction of the cam, the top sliding connection of connecting rod is in the spread groove, and its bottom passes first filter screen group and links to each other with the second filter screen group, first filter screen group install in being close to the bottom water inlet of filter chamber, the periphery of second filter screen group is provided with annular shrouding, the bottom of filter chamber still seted up with annular shrouding longitudinal sliding fit's annular spout.

2. The long shaft pump structure as claimed in claim 1, wherein the first filter screen set comprises a first screen frame, a sliding seal ring, a first filter screen, a guide rod and a pressure spring, the connecting rod passes through the lower part of the first screen frame and is further provided with a pushing block, the first screen frame is further provided with a first filter screen for filtering and isolating, the periphery of the first screen frame is further provided with a sliding seal ring slidably connected in an inner groove of the filter chamber, a guide sleeve is fixed in the filter chamber, the first screen frame is longitudinally fixed with a guide rod which is guided and matched in the guide sleeve, and the guide rod is further compressed with a pressure spring between the guide sleeve and the first screen frame.

3. The long shaft pump structure as claimed in claim 2, wherein the first net frame comprises two sets of skeleton units distributed in a cross shape.

4. The elongated shaft pump structure of claim 1, wherein the second screen assembly includes a second screen frame and a second screen mounted on the second screen frame, and the outer side of the second screen is connected to the annular closing plate.

5. The long axis pump structure as claimed in claim 1, wherein the rotating horizontal axis is distributed around the periphery of the first bevel gear in a cross shape.

6. The long shaft pump structure as claimed in claim 1, wherein a waste pipe is connected to the filtering chamber between the first filtering net group and the second filtering net group, and the waste pipe extends out of the filtering chamber and is connected to the electromagnetic valve.

7. The long shaft pump structure as claimed in claim 1, wherein the annular sliding groove is provided with a sealing ring for sealing inside and outside the annular sealing plate.

8. The long shaft pump structure as claimed in claim 1, wherein said filter chamber is detachably connected to said pump housing by bolts.