A new type of split-center double-suction pump with a removable tongue block

Abstract

The present invention provides a new type of open-center double-suction pump with a detachable baffle block, including a pump body, a suction pump cavity is provided inside the pump body, two double-volute water pressure chambers are provided at the bottom end inside the suction pump cavity, a shaft is provided inside the pump body, both ends of the shaft pass through the outer shell on both sides of the pump body, and a shaft sleeve is embedded in the inner wall of the pump body, mechanical seal assemblies are fixedly installed on both sides of the top of the pump body, bearings are embedded in the two mechanical seal assemblies, one end of the shaft is placed inside one of the bearings, and the other end of the shaft passes through the other bearing and is placed outside the mechanical seal assembly, an impeller is fixedly installed in the middle of the shaft, and the top of the pump body is fixedly connected to the pump cover by a movable pin. The scheme of the present invention: when the water pump impeller is cut in large quantities or is equipped with a modified impeller, the working range and high-efficiency range of the water pump are broadened without increasing the water pump casing mold, the stability and reliability of the water pump are improved, and the production cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of split-center double-suction pumps, and in particular relates to a novel split-center double-suction pump with a detachable tongue movable block. Background Art

[0002] As an important form of centrifugal pump, double-suction pump is widely used in engineering because of its high head and large flow rate. The impeller of this pump type is actually composed of two back-to-back impellers. The water flowing out of the impeller merges into a volute. The double-suction pump has the following characteristics: it is equivalent to two single-suction impellers of the same diameter working at the same time, and the flow rate can be doubled under the same impeller outer diameter; the pump casing is horizontally opened, which is convenient for inspection and maintenance. At the same time, the inlet and outlet of the double-suction pump are in the same direction and perpendicular to the pump shaft, which is conducive to the layout and installation of the pump and the inlet and outlet pipes; the impeller structure of the double-suction pump is symmetrical, there is no axial force, and the operation is relatively stable.

[0003] With the development of economy and the progress of modernization, the application scope of split case double-suction pump is becoming wider and wider, and the selection parameters of customers are also different. In many cases, when the performance required by users is lower than that of existing pumps, water pump manufacturers usually cut the outer diameter of water pump impeller or redesign the modified impeller with smaller outlet width to expand the working range of water pump and meet the use conditions of customers. When the outer diameter of impeller is cut larger or a modified impeller is used, the matching with the original water pump pressure chamber is poor, resulting in low operating efficiency of water pump and serious power consumption. At this time, the water pump is often accompanied by noise, vibration and other phenomena, which makes the stability and reliability of the water pump worse. Summary of the invention

[0004] The purpose of the present invention is to provide a new type of split-center double-suction pump with a detachable baffle block, aiming to solve the problems in the prior art that the water pressure chamber of the water pump has poor matching, resulting in low operating efficiency of the water pump, serious power consumption, and the water pump is often accompanied by noise, vibration and other phenomena, which makes the stability and reliability of the water pump poor.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A new type of split-center double-suction pump with a detachable baffle block comprises a pump body, a suction pump cavity is provided inside the pump body, two double-volute type water pressure chambers are provided at the bottom end of the suction pump cavity, a shaft is provided inside the pump body, both ends of the shaft pass through the outer shell on both sides of the pump body, and shaft sleeves are embedded in the inner part of the pump body shell wall, mechanical seal assemblies are fixedly installed on both sides of the top of the pump body, bearings are embedded in the two mechanical seal assemblies, one end of the shaft is placed inside one of the bearings, and the other end of the shaft passes through the other bearing and is placed outside the mechanical seal assembly.

[0007] In order to make it possible, as a preferred embodiment of the present invention, an impeller is fixedly installed in the middle of the shaft, and the top of the pump body is fixedly connected to the pump cover through a movable pin.

[0008] In order to make, as a preferred embodiment of the present invention, a plurality of baffle tongue movable blocks are arranged inside the suction pump cavity, and the baffle tongue ends of the plurality of baffle tongue movable blocks are placed outside the double volute type water pressure chamber.

[0009] In order to make, as a preferred embodiment of the present invention, the outer shape of the tongue-isolating movable block is in the shape of a "human".

[0010] In order to make it possible, as a preferred embodiment of the present invention, a water inlet and a water outlet are fixedly installed on both sides of the pump body.

[0011] In order to make it possible, as a preferred embodiment of the present invention, one side of one of the mechanical seal assemblies is fixedly connected to the cover plate by a pin.

[0012] In order to make it possible, as a preferred embodiment of the present invention, a fixing seat is fixedly installed at the bottom end of the pump body.

[0013] In order to make it a preferred embodiment of the present invention, the water outlet on one side of the pump body is provided with a sleeve, the top and bottom ends of the sleeve are respectively provided with screws, one end of the two screws are placed inside the sleeve and fixedly connected to the rubber block, a fixing sleeve is fixedly installed on one side of the sleeve, and a sealing gasket is provided on the inner wall edge of the fixing sleeve.

[0014] 1) By setting up a double volute water pressure chamber, when the water pump impeller is cut larger or equipped with a modified impeller, without increasing the water pump mold, the working range and high efficiency range of the water pump are widened, the stability and reliability of the water pump are improved, and the production cost is reduced;

[0015] 2) By setting the tongue block, the impeller outer diameter is cut larger or the impeller is modified, so that it is more compatible with the original water pump pressure chamber, resulting in higher pump efficiency, lower power consumption during operation, lower noise, vibration and other phenomena during the pumping process, and higher pump stability and reliability;

[0016] 3) When the performance of an existing water pump is improved through processing and manufacturing, the water pump manufacturer will usually cut the outer diameter of the water pump impeller or redesign a modified impeller with a smaller outlet width to expand the existing working range of the water pump, thereby meeting the production and processing conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Attached Figure 1 It is a schematic diagram of the structure of an existing split-case double-suction pump;

[0019] Attached Figure 2 It is a schematic diagram of the structure of the split-center double-suction pump of the present invention;

[0020] Attached Figure 3 It is a structural schematic diagram of the tongue-isolating movable block of the present invention;

[0021] Attached Figure 4 It is a structural schematic diagram of the screw of the present invention;

[0022] Attached Figure 5 It is a schematic structural diagram of the shaft sleeve of the present invention.

[0023] In the figure: 1. Pump body; 2. Suction pump chamber; 3. Double volute type water pressure chamber; 4. Shaft; 5. Bushing; 6. Mechanical seal assembly; 7. Bearing; 8. Impeller; 9. Pump cover; 10. Spacer block; 11. Sleeve; 12. Rubber block; 13. Screw; 14. Fixed sleeve. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-5 The present invention provides the following technical solutions: a novel split-center double-suction pump with a detachable baffle block, comprising a pump body 1, a suction pump chamber 2 is arranged inside the pump body 1, two double-volute type water pressure chambers 3 are arranged at the bottom end of the suction pump chamber 2, a shaft 4 is arranged inside the pump body 1, both ends of the shaft 4 pass through the outer shell on both sides of the pump body 1, and a shaft sleeve 5 is embedded in the inner part of the shell wall of the pump body 1, mechanical seal assemblies 6 are fixedly installed on both sides of the top of the pump body 1, bearings 7 are embedded in the two mechanical seal assemblies 6, one end of the shaft 4 is placed in one of the bearings 7, and the other end of the shaft 4 passes through the other bearing 7 and is placed outside the mechanical seal assembly 6.

[0026] In the embodiment of the present invention, an impeller 8 is fixedly mounted on the middle of the shaft 4, and the top of the pump body 1 is fixedly connected to the pump cover 9 via a movable pin.

[0027] Specifically, during the use of the split-center double-suction pump, the water inlet and the water outlet are connected to the two connecting pipes, and the rotation of the shaft 4 drives the impeller 8 to rotate. Two double-volute water pressure chambers 3 are arranged inside the pump body 1. The double-volute water pressure chambers 3 and the suction pump chamber 2 are connected, so that the impeller 8 can rotate at high speed under the rotation of the shaft 4 to generate suction. The impeller 8 rotates inside the suction pump chamber 2, and then generates centrifugal force to quickly clear the water inside the water pipe of the water inlet, so that the water on the water inlet needs to enter through the impeller 8 inside the pump body 1. The cutting amount is large, and the operation of the modified impeller 8 is efficient, stable and reliable through design. It operates in different extraction environments. When the outer diameter of the impeller 8 needs to be cut larger or the modified impeller 8 is equipped, the matching with the original water pump pressure chamber is poor, resulting in low water pump operation efficiency and serious power consumption. The installation of the baffle block 10 is convenient for balancing the pressure difference generated by the high-speed operation of the impeller 8 inside the double-volute water chamber 3, reducing the noise and vibration caused by the friction and energy consumption caused by the high-speed operation of the water pump, so that the stability of the water pump is enhanced and the reliability is improved.

[0028] In the embodiment of the present invention, a plurality of tongue-blocks 10 are disposed inside the suction pump cavity 2 , and tongue ends of the plurality of tongue-blocks 10 are placed outside the double-volute type water pressure chamber 3 .

[0029] Specifically, through the use of several baffle blocks 10 inside the suction pump chamber 2, the pressure difference generated by the impeller 8 inside the double-volute water pressure chamber 3 can be easily decomposed by arranging the baffle blocks 10, thereby reducing the generation of noise and vibration.

[0030] In the embodiment of the present invention, the outer shape of the tongue-isolating movable block 10 is in the shape of a "human".

[0031] Specifically, the water inside the double volute type water pressure chamber 3 is more fully transported through the baffle block 10 with a herringbone opening, and the pressure difference generated is fully decomposed into a high pressure difference.

[0032] In the embodiment of the present invention, a water inlet and a water outlet are fixedly installed on both sides of the pump body 1.

[0033] Specifically, the arrangement of the water inlet and the water outlet facilitates the water transportation of the double volute type water pressure chamber 3 inside the pump body 1, facilitates the cooperation between the impeller 8 and the shaft 4, and improves the water transportation efficiency of the water pump.

[0034] In the embodiment of the present invention, one side of one of the mechanical seal components 6 is fixedly connected to the cover plate via a pin.

[0035] Specifically, the cover plate is provided to cover and protect one of the mechanical seal components 6 to prevent dust from entering the interior of the mechanical seal component 6 and causing damage to the rotation of the bearing 7 and the shaft 4, thereby reducing the rotational friction between the bearing 7 and the shaft 4.

[0036] In the embodiment of the present invention, a fixing seat is fixedly installed at the bottom end of the pump body 1.

[0037] Specifically, the fixed base at the bottom of the pump body 1 facilitates supporting the water pump during operation.

[0038] In the embodiment of the present invention, a water outlet sleeve on one side of the pump body 1 is provided with a sleeve 11, and screws 13 are respectively provided at the top and bottom ends of the sleeve 11. One end of the two screws 13 is placed inside the sleeve 11 and fixedly connected to the rubber block 12. A fixing sleeve 14 is fixedly installed on one side of the sleeve 11, and a sealing gasket is provided on the inner wall edge of the fixing sleeve 14.

[0039] Specifically, when the pump body 1 is conveying water, the impeller 8 inside the suction pump chamber 2 rotates at a high speed to generate a super-large suction force, which will cause a pressure difference inside the water pump, resulting in a higher operating efficiency of the water pump. During operation, the water is conveyed through the double-volute water pressure chamber 3 and the suction pump chamber 2 to reduce the friction of cutting. The noise, vibration and other phenomena during the conveying process of the impeller 8 make the stability and reliability of the pump body 1 worse. Therefore, the screws 13 arranged at the top and bottom ends of the sleeve 11 are rotated, and the connecting pipes on the water inlet and the water outlet are inserted and fixed at the same time. The two screws 13 are rotated to drive the rubber block 12 to fix the connecting pipe inserted into the sleeve 11, and the water inlet and the water outlet are fixed by the sealing gasket on the inner wall of the fixing sleeve 14, and then the connecting pipe inside the fixing sleeve 14 can be fixed.

[0040] Supplementary explanation: On the basis of the existing split-center double-suction pump, a detachable partition tongue movable block 10 is added. The partition tongue movable block 10 is enclosed by the outside of the existing water pressure chamber partition tongue movable block 10 and is fixed by screws. When the water pump impeller 8 is cut larger or is equipped with a modified impeller 8, without increasing the water pump casing mold, the working range and high-efficiency area of ​​the water pump are broadened, the stability and reliability of the water pump are improved, and the production cost is saved.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A novel split-center double-suction pump with a detachable tongue block, comprising a pump body (1), characterized in that: The pump body (1) is provided with a suction pump chamber (2) inside, and two double-volute type water pressure chambers (3) are provided at the bottom end inside the suction pump chamber (2). The pump body (1) is provided with a shaft (4) inside, and an impeller (8) is fixedly installed in the middle of the shaft (4). The top of the pump body (1) is fixedly connected to a pump cover (9) via a movable pin. The two ends of the shaft (4) penetrate the outer shells on both sides of the pump body (1), and a shaft sleeve (5) is embedded in the inner wall of the pump body (1); mechanical seal assemblies (6) are fixedly installed on both sides of the top of the pump body (1); bearings (7) are embedded in the two mechanical seal assemblies (6); one end of the shaft (4) is placed in the inner part of one of the bearings (7), and the other end of the shaft (4) penetrates the other bearing (7) and is placed outside the mechanical seal assembly (6); A plurality of tongue-blocks (10) are arranged inside the suction pump chamber (2), and tongue ends of the plurality of tongue-blocks (10) are placed outside the double-volute type water pressure chamber (3); the tongue-blocks (10) are shaped like a "human" figure; A water inlet and a water outlet are fixedly installed on both sides of the pump body (1); a sleeve (11) is provided on the water outlet on one side of the pump body (1); screws (13) are respectively provided on the top and bottom ends of the sleeve (11); one end of the two screws (13) is placed inside the sleeve (11) and fixedly connected to the rubber clamp (12); a fixed sleeve (14) is fixedly installed on one side of the sleeve (11); a sealing gasket is provided on the inner wall edge of the fixed sleeve (14).

2. A novel split-center double-suction pump with a detachable tongue block according to claim 1, characterized in that: One side of one of the mechanical seal components (6) is fixedly connected to the cover plate via a pin.

3. A novel split-center double-suction pump with a detachable tongue block according to claim 1, characterized in that: A fixing seat is fixedly mounted on the bottom end of the pump body (1).

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