Sewage centrifugal self-priming pump device and assembly arrangement structure

Abstract

The utility model discloses a sewage centrifugal self-priming pump device, which comprises a water diversion tank, a water pump, a water pump and a water pump, the centrifugal pump is communicated with the water diversion tank through a first drainage pipe; the water conduit is communicated with the water diversion tank and the sewage pool; the flat top surface is provided with a top water diversion port, a top water inlet, a top exhaust port and a bottom water outlet; the water diversion pipe comprises a first bent side section, a connecting section and a second bent side section which are sequentially connected, the first bent side section is vertically arranged on the flat top surface and is communicated with the top water diversion port, the second bent side section extends into the sewage pool, the connecting section is horizontally or obliquely arranged, the lowest end of the connecting section is close to the first bent side section and is connected with the first bent side section, and the lowest end of the connecting section is connected with the second bent side section. A port of the top exhaust port is located between the bottom of the connecting section and the flat top face. The inclination angle of the connecting section in the water diversion pipe is flexibly set, water flows out of the top exhaust port after being filled in the water diversion tank, overflowing water is prevented from flowing back into the water diversion pipe, the structure of the water diversion tank is simplified, and meanwhile the compactness and the negative pressure strength of the water diversion tank are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, and in particular to a sewage centrifugal self-priming pump device and its assembly layout structure. Background Technology

[0002] Industrial wastewater treatment often requires pump extraction. The selection of pumps should not only consider their working principle and efficiency, but also the chemical properties of the wastewater to select the appropriate type.

[0003] Existing self-priming pumps combined with priming tanks are commonly used to ensure stable operation of the pumps, reduce maintenance frequency, and maintain stable operation of the wastewater treatment system. However, for factories with limited space, the layout of the pipelines connecting the self-priming pumps and priming tanks, as well as the insulation of the pipelines, are also very important for operation.

[0004] Patent CN207454290U discloses a centrifugal pump priming tank, including a tank body. The top plate of the tank body includes an inclined top plate and a flat top plate. One end of the inclined top plate is connected to the flat top plate, and the other end of the inclined top plate is higher than the flat top plate. A water inlet valve is installed on the flat top plate, and an air vent valve is installed on the inclined top plate. A suction pipe and a drain pipe are connected to the side wall of the tank body. Because the air vent valve is located on the inclined top plate, that is, the opening of the air vent pipe is higher than the top surface of the inclined top plate, water overflowing during filling will flow back into the suction pipe, which is not practical.

[0005] Patent CN113684918A discloses a self-priming pump device and method for sewage tanks, comprising a centrifugal pump and a priming tank. The priming tank is equipped with an inlet, an outlet, a replenishment inlet, and an vent. The inlet and vent are located at the upper part of the priming tank. The inlet is connected to an inlet pipe, and the outlet is located at the lower part of the priming tank and connected to the inlet of the centrifugal pump. The replenishment inlet is located at the top of the priming tank. Furthermore, the height of the vent is between the height of the inlet and the height of the outlet. This solves the problem of backflow into the suction pipe when the tank overflows during replenishment. However, it requires adjustment of the height of the priming tank and the provision of vents and outlets on the side wall, thus placing high demands on the structural design of the priming tank.

[0006] Therefore, it is necessary to simplify and improve the existing sewage centrifugal self-priming pump device. Utility Model Content

[0007] One of the objectives of this utility model is to overcome the defects existing in the prior art and provide a sewage centrifugal self-priming pump device. The water inlet pipe is set in sections, and the inclination angle of the connecting sections can be flexibly set. After the water inlet tank is filled with water, it flows out from the top vent, thereby preventing the overflowing water from flowing back into the water inlet pipe. The three do not interfere with each other, and the structure of the water inlet tank is simplified, while ensuring its density and greater negative pressure strength.

[0008] To achieve the above technical effects, the technical solution of this utility model is: a sewage centrifugal self-priming pump device, comprising:

[0009] The water tank has a flat top surface;

[0010] A centrifugal pump is connected to the water tank via a first drain pipe;

[0011] A water inlet pipe connects the water inlet tank and the sewage tank;

[0012] The flat top surface is provided with a top water inlet, a top water outlet, a top air vent, and a bottom water outlet;

[0013] The water inlet pipe includes a first bent side section, a connecting section, and a second bent side section connected in sequence. The first bent side section is vertically arranged on the flat top surface and communicates with the top water inlet. The second bent side section extends into the sewage tank. The connecting section is arranged horizontally or inclined. The lowest end of the connecting section is close to and connected to the first bent side section. The port of the top vent is located between the bottom of the connecting section and the flat top surface.

[0014] The preferred technical solution is that the outer walls of the water inlet pipe and the first drain pipe are provided with an inner heat-insulating layer and a protective outer shell from the inside to the outside.

[0015] A preferred technical solution is that both the top vent and the top water inlet are equipped with control valves.

[0016] A preferred technical solution is that the connecting section is provided with a reinforced support base.

[0017] The second objective of this utility model is to overcome the defects existing in the prior art and provide an assembly and layout structure for a sewage centrifugal self-priming pump device. Based on the above-mentioned sewage centrifugal self-priming pump device, sewage tanks are arranged in pairs, and the pairs of sewage tanks are arranged in one-to-one correspondence with the centrifugal pump and the priming tank. The centrifugal pump is sandwiched between the priming tanks.

[0018] A preferred technical solution is that the top water inlet and the top vent are respectively located on both sides of the top water inlet, the top water inlet is located away from the water pipe, and the bottom water outlet is located on the same side as the top vent.

[0019] A preferred technical solution is that the top exhaust port is provided with an exhaust pipe, the exhaust pipe including a first exhaust section and a second exhaust section that are bent and connected. The first exhaust section is located below the connecting section and extends away from the centrifugal pump. The extension direction of the second exhaust section is consistent with the extension direction of the second bent side section.

[0020] A preferred technical solution is that the first drain pipe is bent, and the bent portion of the first drain pipe is located below the connecting section.

[0021] A preferred technical solution is that the outlet of the centrifugal pump is connected to a second drain pipe, the second drain pipe is arched away from the centrifugal pump, and a pressure gauge is installed on the arched section of the second drain pipe.

[0022] This utility model of a sewage centrifugal self-priming pump device has a reasonable structure. The water inlet pipe is set in sections, and the inclination angle of the connecting sections can be flexibly set. After the water inlet tank is filled, the water flows out from the top vent, thus preventing the overflowing water from flowing back into the water inlet pipe. The three components do not interfere with each other, and the structure of the water inlet tank is simplified while ensuring its tightness and greater negative pressure strength. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the wastewater centrifugal self-priming pump device and its assembly layout according to this utility model;

[0024] Figure 2 This is another structural schematic diagram of the wastewater centrifugal self-priming pump device and its assembly layout according to this utility model.

[0025] In the diagram: 1. Water inlet tank; 2. Centrifugal pump; 3. Water inlet pipe; 10. Bottom outlet; 11. Top inlet; 12. Top inlet; 13. Top vent; 20. Second drain pipe; 21. First drain pipe; 30. Connecting section; 31. First bend side section; 32. Second bend side section; 33. Sewage tank; 131. First vent section; 132. Second vent section. Detailed Implementation

[0026] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0027] The terms "below," "bottom," "top," "side," "inner," and "outer" refer to the normal operating state of the sewage centrifugal self-priming pump device. They are used only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model.

[0028] like Figures 1-2As shown, the wastewater centrifugal self-priming pump device of this utility model includes a water tank 1, a centrifugal pump 2, and a water inlet pipe 3. The water tank 1 is provided with a flat top surface (not marked), and the flat top surface is provided with a top water inlet 11, a top water inlet 12, a top vent 13, and a bottom water outlet 10. The centrifugal pump 2 is connected to the water tank 1 through a first drain pipe 21. The water inlet pipe 3 connects the water tank 1 and the wastewater tank 33. The water inlet pipe 3 includes a first bent side section 31, a connecting section 30, and a second bent side section 32 connected in sequence. The first bent side section 31 is vertically arranged on the flat top surface and is connected to the top water inlet 11. The second bent side section 32 extends into the wastewater tank 33. The connecting section 30 is arranged horizontally or inclined. The lowest end of the connecting section 30 is close to and connected to the first bent side section 31. The port of the top vent 13 is located between the bottom of the connecting section 30 and the flat top surface.

[0029] like Figure 1 and 2 The middle connector is set horizontally at 30.

[0030] By segmenting the water inlet pipe 3 and flexibly adjusting the inclination angle of the connecting section 30, the water inlet tank 1 is filled with water and then flows out through the top vent 13, thus preventing the overflowing water from flowing back into the water inlet pipe 3. The three components do not interfere with each other, simplifying the structure of the water inlet tank 1 while ensuring its tightness and greater negative pressure strength.

[0031] To prevent the pipes from bursting in cold weather and to prevent them from corroding or losing their insulation performance due to long-term exposure to the external environment, the outer walls of the water inlet pipe 3 and the first drain pipe 21 are sequentially equipped with an inner insulation layer and a protective outer shell from the inside out. The protective outer shell is shown in the figure as a segmented line wrapping around the outer wall of the pipe. The material of the inner insulation layer includes, but is not limited to, rock wool, and the material of the protective outer shell includes, but is not limited to, stainless steel.

[0032] Both the top vent 13 and the top inlet 12 are equipped with control valves (not shown). The control valves can be electric or manual.

[0033] To enhance the stability and durability of the device and maintain the horizontal or inclined state of the connecting section 30, a reinforcing support base (not shown) is provided on the connecting section 30. The reinforcing support base is fixedly connected to the connecting section 30 and fixedly installed on the ground. Specifically, the reinforcing support base is assembled from horizontal and vertical connecting rods.

[0034] Since there can be multiple sewage tanks 33, and the site layout is fixed with limited space that is difficult to change, in order to achieve a compact arrangement and normal operation of the device, the assembly and layout structure of the sewage centrifugal self-priming pump device is based on the above-mentioned sewage centrifugal self-priming pump device. The sewage tanks 33 are arranged in pairs, with each pair of sewage tanks 33 corresponding to a centrifugal pump 2 and a priming tank 1. The centrifugal pump 2 is sandwiched between the priming tanks 1. This allows for flexible use of the space between adjacent sewage tanks 33 to install equipment and pipelines.

[0035] The top water inlet 12 and the top vent 13 are located on opposite sides of the top water inlet 11. The top water inlet 12 is positioned away from the water inlet pipe 3, and the bottom water outlet 10 is positioned on the same side as the top vent 12. This design effectively frees up more space for the top water inlet 12 within a limited area, reducing obstructions and facilitating water filling operations.

[0036] To optimize the drainage system during venting or filling, an vent pipe is provided at the top vent 13. This vent pipe includes a first vent section 131 and a second vent section 132 connected by bends. The first vent section 131 extends below the connecting section 30 and away from the centrifugal pump 2, meaning the vent pipe faces the outer side of the overall device. The second vent section 132 extends in the same direction as the second bend side section 32. The vent pipe can also be understood as the pipe through which water overflows after the water tank is filled. The vent pipe formed by the connection of the first vent section 131 and the second vent section 132 effectively collects or discharges water overflowing after filling, reducing splashing during drainage and improving operational safety and efficiency.

[0037] To further optimize the assembly and layout of the sewage centrifugal self-priming pump device and ensure its smooth and continuous operation, the first drain pipe 21 is bent, with the bend located below the connecting section 30. The outlet of the centrifugal pump 2 is connected to a second drain pipe 20, which is arched away from the centrifugal pump 2. A pressure gauge (not shown) is installed on the arched section of the second drain pipe 20. The pressure gauge measures the pressure in the drain pipe. The arched design of the second drain pipe 20 away from the centrifugal pump 2 can be understood as an extension relative to the vertical direction of the ground, effectively utilizing the space in the vertical direction and reducing the space in the horizontal direction.

[0038] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A sewage centrifugal self-priming pump device, comprising: The water tank has a flat top surface; A centrifugal pump is connected to the water tank via a first drain pipe; A water inlet pipe connects the water inlet tank and the sewage tank; The flat top surface is provided with a top water inlet, a top water outlet, a top air vent, and a bottom water outlet; The water inlet pipe is characterized in that it comprises a first bent side section, a connecting section, and a second bent side section connected in sequence. The first bent side section is vertically arranged on the flat top surface and communicates with the top water inlet. The second bent side section extends into the sewage tank. The connecting section is arranged horizontally or inclined. The lowest end of the connecting section is close to and connected to the first bent side section. The port of the top vent is located between the bottom of the connecting section and the flat top surface.

2. The sewage centrifugal self-priming pump device according to claim 1, characterized in that, The outer walls of both the water inlet pipe and the first drain pipe are provided with an inner heat-insulating layer and a protective outer shell from the inside out.

3. The sewage centrifugal self-priming pump device according to claim 1 or 2, characterized in that, Both the top vent and the top inlet are equipped with control valves.

4. The sewage centrifugal self-priming pump device according to claim 1, characterized in that, The connecting section is equipped with a reinforced support base.

5. An assembly layout structure for a sewage centrifugal self-priming pump device, based on the sewage centrifugal self-priming pump device according to any one of claims 1 to 4, characterized in that, The sewage tanks are arranged in pairs, with each pair corresponding to a centrifugal pump and a water priming tank, and the centrifugal pump is sandwiched between the water priming tanks.

6. The assembly layout structure of the sewage centrifugal self-priming pump device according to claim 5, characterized in that, The top water inlet and the top vent are located on opposite sides of the top water inlet. The top water inlet is located away from the water pipe, and the bottom water outlet is located on the same side as the top vent.

7. The assembly layout structure of the sewage centrifugal self-priming pump device according to claim 5 or 6, characterized in that, The top exhaust port is provided with an exhaust pipe, which includes a first exhaust section and a second exhaust section that are bent and connected. The first exhaust section is located below the connecting section and extends away from the centrifugal pump. The extension direction of the second exhaust section is consistent with the extension direction of the second bent side section.

8. The assembly layout structure of the sewage centrifugal self-priming pump device according to claim 5, characterized in that, The first drain pipe is bent, and the bent portion of the first drain pipe is located below the connecting section.

9. The assembly layout structure of the sewage centrifugal self-priming pump device according to claim 5, characterized in that, The centrifugal pump has a second drain pipe connected to its outlet. The second drain pipe is arched away from the centrifugal pump, and a pressure gauge is installed on the arched section of the second drain pipe.

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