A liquid collecting pipe for a jet grouting pump

Abstract

The present invention belongs to the technical field of rotary pumps, and specifically discloses a liquid collecting pipe for a jet pump, which includes a pump body. Two collecting pipe bodies are communicated with one side of the pump body. The other end of one of the collecting pipe bodies is provided with a water inlet, and the other end of the other collecting pipe body is provided with a water outlet. An inlet bend is formed inside the collecting pipe body provided with the water inlet; by setting a flow splitting component, the inlet bend and the outlet bend can be separated to form two flow channels with equal cross-sectional areas, and the flow rates on the inner and outer sides of the inlet and the outlet are basically equal, so as to achieve the effect of eliminating turbulence, improving the performance of the pump. At the same time, by using an auxiliary component, the effect of initially eliminating turbulence of the water introduced into the collecting pipe body can be realized, and the water body is conveyed into the collecting pipe body in a spiral shape. By applying spiral motion, the fluid can be made to tend more towards a laminar flow state, further reducing the intensity and frequency of turbulence.

Description

Technical Field

[0001] The present invention belongs to the technical field of rotary pumps, and specifically discloses a liquid collecting pipe for a jet pump. Background Art

[0002] A jet pump is a small-flow and high-lift centrifugal pump, and the liquid collecting pipe is a key component that converts the potential energy and velocity energy of the transported liquid into pressure energy.

[0003] When the jet pump is working, the liquid flows into the liquid collecting pipe from the inlet at a high speed. After entering the bend, it starts to spread. Along the central direction of the diffusion section, the speed significantly decreases, and the diffusion effect is obvious. Due to the expansion of the diameter of the diffusion section and the viscous effect of the wall surface, the liquid mainly flows on the outer side of the pipe with a higher speed, while turbulence is generated on the inner side, resulting in an increase in the energy loss of the liquid; especially for a jet pump with a large flow rate, it causes a decrease in the shut-off head and a hump in the performance curve.

[0004] The liquid flows out of the liquid collecting pipe from the outlet at a high speed. After entering the bend, it starts to spread. Due to the expansion of the diameter of the diffusion section and the viscous effect of the wall surface, the liquid mainly flows on the outer side of the pipe with a higher speed, while turbulence is generated on the inner side, resulting in an increase in the loss of the liquid and an increase in the vibration of the pump;

[0005] Therefore, those skilled in the art have proposed a liquid collecting pipe for a jet pump to solve the above problems. Summary of the Invention

[0006] In view of this, the technical problem to be solved by the present invention is to provide a liquid collecting pipe for a jet pump to solve the problem that the existing technology of liquid entering the inside of the liquid collecting pipe causes turbulence and affects the use effect of the rotary pump.

[0007] To achieve the above object, the present invention provides a liquid collecting pipe for a jet pump, including a pump body. One side of the pump body is communicated with two liquid collecting pipe bodies. The other end of one of the liquid collecting pipe bodies is provided with a water inlet, and the other end of the other liquid collecting pipe body is provided with a water outlet. An inlet bend is formed inside the liquid collecting pipe body provided with the water inlet, and an outlet bend is formed inside the liquid collecting pipe body provided with the water outlet. A flow dividing component is arranged inside both the inlet bend and the outlet bend. One end of one of the liquid collecting pipe bodies is provided with a guiding structure communicated with the water inlet;

[0008] Wherein, the flow dividing component includes an inlet flow dividing piece and an outlet flow dividing piece. The inlet flow dividing piece is fixedly connected to the middle of the inner wall of the inlet bend, and the outlet flow dividing piece is fixedly connected to the middle of the inner wall of the outlet bend. The starting end and the terminal end of the inlet flow dividing piece and the outlet flow dividing piece both adopt arc transitions;

[0009] The guiding structure includes a mounting shell fixedly connected to one end of the water collecting pipe body. A communication cavity communicating with the water inlet is formed on the surface of the mounting shell, and an auxiliary component and a guiding component are arranged inside the communication cavity.

[0010] In the above technical solution, preferably, the inlet diverter divides the inlet bend into two parts: the outer side of the inlet bend and the inner side of the inlet bend, and the outlet diverter divides the outlet bend into two parts: the outer side of the outlet bend and the inner side of the outlet bend.

[0011] In the above technical solution, preferably, the cross-sectional areas of the outer side of the inlet bend and the inner side of the inlet bend are equal, and the cross-sectional areas of the outer side of the outlet bend and the inner side of the outlet bend are equal.

[0012] In the above technical solution, preferably, the starting point and the ending point of the inlet diverter are the same as the starting point and the ending point of the inlet bend, and the starting point and the ending point of the outlet diverter are the same as the starting point and the ending point of the outlet bend.

[0013] In the above technical solution, preferably, the guiding component includes a partition fixedly connected to the inner wall of the communication cavity. The surface of the partition is provided with annularly distributed filter holes, and the inner wall cross-section of the filter holes is arranged in an inclined plane. The inner wall of the communication cavity is fixedly connected with a mounting plate located between the partition and the water inlet, and a driving cavity is formed between the mounting plate and the partition.

[0014] In the above technical solution, preferably, the surface of the mounting plate is provided with annularly distributed drainage grooves, and the inner wall of the drainage grooves is arranged in an arc surface.

[0015] In the above technical solution, preferably, the auxiliary component includes a rotating shaft arranged inside the driving cavity. The lower end of the rotating shaft penetrates through the partition and is fixedly connected with a cleaning rod. The surface of the cleaning rod is in contact with the surface of the partition. The upper end of the cleaning rod penetrates through the mounting plate and is fixedly connected with annularly distributed mounting rods. The other end of the mounting rod is fixedly connected with a drainage plate. The cross-sectional shape of the drainage plate is wavy, and both ends of the drainage plate are arranged in a circular arc shape.

[0016] In the above technical solution, preferably, a rotating ring is rotatably connected to the inner wall of the driving cavity. The inner side of the rotating ring is fixedly connected with annularly distributed connecting rods, and the other end of the connecting rod is fixedly connected with the surface of the rotating shaft.

[0017] In the above technical solution, preferably, the surface of the rotating shaft is fixedly connected with annularly distributed driving vanes located inside the driving cavity. The driving vanes are located between the connecting rod and the partition.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] By setting the flow splitting component, the inlet bend and the outlet bend can be separated to form two flow channels with equal cross-sectional areas, and the flow rates on the inner and outer sides of the inlet and the outlet are basically equal, so as to achieve the effect of eliminating turbulence, improve the performance of the pump. At the same time, by using the guiding component, the effect of initially eliminating turbulence of the water inside the inlet collecting pipe body can be achieved, and the water body is conveyed to the inside of the collecting pipe body in a spiral shape. By applying spiral motion, the fluid can be made to tend more towards the laminar flow state, further reducing the intensity and frequency of turbulence.

[0020] Under the action of the guiding structure, the water body is initially conveyed to the inside of the collecting pipe in a spiral shape through the guiding groove. At the same time, after the water body enters the driving cavity, the driving blades are driven to rotate by the water body, so that the driving blades can drive the rotating shaft to synchronously rotate the drainage plate, applying spiral motion to the water body further and strengthening the effect of eliminating turbulence.

[0021] By setting the filter holes, the impurity particles in the water body can be filtered, reducing the situation that the impurity particles enter the inside of the collecting pipe body along with the water body, causing wear on the inner wall of the collecting pipe body to form a rough plane, and avoiding the phenomenon that the rough plane caused by wear increases the viscous action with the water when the water body passes through, further causing a velocity difference between the outer water and the inner water to lead to turbulence, effectively improving the effect of the collecting pipe body in reducing turbulence. Description of the Drawings

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a connection schematic diagram of the inlet flow splitting piece and the inlet bend of the present invention;

[0024] Figure 3 It is a connection schematic diagram of the outlet flow splitting piece and the outlet bend of the present invention;

[0025] Figure 4 It is a communication schematic diagram of the guiding structure and the water inlet of the present invention;

[0026] Figure 5 It is a distribution schematic diagram of the auxiliary component and the guiding component of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the auxiliary component of the present invention;

[0028] Figure 7 It is a distribution schematic diagram of the drainage groove of the present invention;

[0029] Figure 8 It is a distribution schematic diagram of the filter holes of the present invention.

[0030] In the figure: 1. Pump body; 101. Main body of the collecting pipe; 102. Water inlet; 1021. Inlet bend; 1022. Outer side of the inlet bend; 1023. Inner side of the inlet bend; 103. Water outlet; 1031. Outlet bend; 1032. Outer side of the outlet bend; 1033. Inner side of the outlet bend; 2. Guiding structure; 201. Mounting shell; 21. Auxiliary component; 2101. Rotating shaft; 2102. Rotating ring; 2103. Connecting rod; 2104. Cleaning rod; 2105. Driving blade; 2106. Mounting rod; 2107. Drainage plate; 22. Guiding component; 2201. Mounting plate; 2202. Drainage groove; 2203. Partition; 2204. Filter hole; 3. Inlet flow splitter; 301. Outlet flow splitter. Detailed implementation mode

[0031] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the drawings and specific implementation modes.

[0032] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the limitations of the specific embodiments disclosed below.

[0033] As Figures 1 - 8 shown, a liquid collecting pipe for a jet pump includes a pump body 1. Two main bodies of the collecting pipes 101 are communicated with one side of the pump body 1. The other end of one of the main bodies of the collecting pipes 101 is provided with a water inlet 102, and the other end of the other main body of the collecting pipe 101 is provided with a water outlet 103. An inlet bend 1021 is formed inside the main body of the collecting pipe 101 provided with the water inlet 102, and an outlet bend 1031 is formed inside the main body of the collecting pipe 101 provided with the water outlet 103. Flow splitting components are arranged inside both the inlet bend 1021 and the outlet bend 1031. A guiding structure 2 connected to the water inlet 102 is arranged at one end of one of the main bodies of the collecting pipes 101.

[0034] Among them, the flow splitting components include an inlet flow splitter 3 and an outlet flow splitter 301. The inlet flow splitter 3 is fixedly connected to the middle of the inner wall of the inlet bend 1021, and the outlet flow splitter 301 is fixedly connected to the middle of the inner wall of the outlet bend 1031. The starting ends and terminal ends of the inlet flow splitter 3 and the outlet flow splitter 301 are both transitioned with arcs, which can reduce the impact loss and eddy current loss of the liquid.

[0035] As Figures 1 - 8 shown, the guiding structure 2 includes a mounting shell 201 fixedly connected to one end of the main body of the collecting pipe 101. A communication cavity communicated with the water inlet 102 is formed on the surface of the mounting shell 201, and an auxiliary component 21 and a guiding component 22 are arranged inside the communication cavity.

[0036] The inlet diverter 3 divides the inlet bend 1021 into two parts: the outer side 1022 of the inlet bend and the inner side 1023 of the inlet bend. The outlet diverter 301 divides the outlet bend 1031 into two parts: the outer side 1032 of the outlet bend and the inner side 1033 of the outlet bend.

[0037] The cross-sectional areas of the outer side 1022 of the inlet bend and the inner side 1023 of the inlet bend are equal, and the cross-sectional areas of the outer side 1032 of the outlet bend and the inner side 1033 of the outlet bend are equal.

[0038] The starting point and the ending point of the inlet diverter 3 coincide with the starting point and the ending point of the inlet bend 1021, and the starting point and the ending point of the outlet diverter 301 coincide with the starting point and the ending point of the outlet bend 1031.

[0039] The settings of the inlet diverter 3 and the outlet diverter 301 make the cross-sectional areas of the outer side 1022 of the inlet bend and the inner side 1023 of the inlet bend equal, and the cross-sectional areas of the outer side 1032 of the outlet bend and the inner side 1033 of the outlet bend equal, thereby eliminating the effect of turbulence, improving the performance of the pump, and reducing the increase in energy loss of the liquid caused by the fact that the liquid mainly flows on the outer side of the pipe with a higher speed, while turbulence is generated on the inner side.

[0040] As Figures 1 - 8 shown, the guiding assembly 22 includes a partition 2203 fixedly connected to the inner wall of the communication cavity. The surface of the partition 2203 is provided with annularly distributed filter holes 2204. The inner wall cross-section of the filter holes 2204 is arranged in an inclined plane. The inner wall of the communication cavity is fixedly connected with a mounting plate 2201 located between the partition 2203 and the water inlet 102. A driving cavity is formed between the mounting plate 2201 and the partition 2203.

[0041] The surface of the mounting plate 2201 is provided with annularly distributed drainage grooves 2202, and the inner wall of the drainage grooves 2202 is arranged in an arc surface.

[0042] The setting of the filter holes 2204 can intercept the impurity particles in the water introduced into the water inlet 102, avoid the situation that the impurity particles enter the inner wall of the water collecting pipe body 101 and cause wear of the inner wall of the water collecting pipe body 101. Furthermore, it reduces the phenomenon of turbulence caused by the increase in the viscous effect with water when the water flows through due to the rough inner wall formed by the wear of the inner wall of the water collecting pipe body 101, resulting in a speed difference between the outer water and the inner water. It effectively improves the effect of the water collecting pipe body 101 in reducing turbulence;

[0043] Meanwhile, the inclined inner wall of the filter hole 2204 can preliminarily guide the passing water, making it inclined into the driving cavity. The water passing through the drainage groove 2202 with an arc-shaped inner wall can further guide it into a spiral water body and introduce it into the inside of the water collecting pipe body 101. The spiral water body presents a spiral flow, which can reduce the generation and maintenance of turbulence. By applying a spiral motion, the dynamic characteristics of the fluid can be changed, making the fluid more tend to be in a laminar state, thereby reducing the intensity and frequency of turbulence.

[0044] As Figures 1 - 8 shown, the auxiliary component 21 includes a rotating shaft 2101 arranged inside the driving cavity. The lower end of the rotating shaft 2101 penetrates through the partition plate 2203 and is fixedly connected with a cleaning rod 2104. The surface of the cleaning rod 2104 is in contact with the surface of the partition plate 2203. The upper end of the cleaning rod 2104 penetrates through the mounting plate 2201 and is fixedly connected with annularly distributed mounting rods 2106. The other ends of the mounting rods 2106 are fixedly connected with a drainage plate 2107. The cross-sectional shape of the drainage plate 2107 is wavy, and both ends of the drainage plate 2107 are arranged in an arc shape.

[0045] The inner wall of the driving cavity is rotatably connected with a rotating ring 2102. The inner side of the rotating ring 2102 is fixedly connected with annularly distributed connecting rods 2103. The other ends of the connecting rods 2103 are fixedly connected with the surface of the rotating shaft 2101.

[0046] The surface of the rotating shaft 2101 is fixedly connected with annularly distributed driving blades 2105 located inside the driving cavity. The driving blades 2105 are located between the connecting rods 2103 and the partition plate 2203.

[0047] After the water body passes through the filter hole 2204, it can push the driving blade 2105 to rotate. During this process, the rotating shaft 2101 can be driven to rotate. By rotating the rotating shaft 2101, the cleaning rod 2104 can be rotated to achieve the effect of cleaning the surface of the partition plate 2203, avoiding the accumulation of impurities and affecting the water flow. At the same time, the drainage plate 2107 is driven to rotate by the mounting rod 2106, and the rotating direction of the driving blade 2105 is consistent with the spiral flow direction of the water body guided by the drainage groove 2202, so that it can drive the drainage plate 2107 to strengthen the rotation effect of the water body, further apply a spiral motion to the water body, and further achieve the effect of reducing turbulence.

[0048] Working principle: The starting ends and terminal ends of the inlet flow dividing plate 3 and the outlet flow dividing plate 301 adopt arc transitions, which can reduce the impact loss and eddy current loss of the liquid. At the same time, the settings of the inlet flow dividing plate 3 and the outlet flow dividing plate 301 make the cross-sectional areas of the outer side 1022 and the inner side 1023 of the inlet bend equal, and the cross-sectional areas of the outer side 1032 and the inner side 1033 of the outlet bend equal, thereby eliminating the effect of turbulence, improving the performance of the pump, and reducing the increase in the energy loss of the liquid caused by the liquid mainly flowing on the outer side of the pipe with a higher speed and the generation of turbulence on the inner side. Before the water body is introduced into the water inlet 102, the guiding component 22 can initially eliminate the turbulence in the water body, reducing the further enhancement of turbulence caused by the water body entering the inside of the water collecting pipe body 101. The water body can be further guided into a spiral shape and introduced into the inside of the water collecting pipe body 101 through the drainage groove 2202 with an arc-shaped inner wall. The spiral water body shows spiral flow, which can reduce the generation and maintenance of turbulence. By applying spiral motion, the dynamic characteristics of the fluid can be changed, making the fluid more tend to the laminar flow state, thereby reducing the intensity and frequency of turbulence. And during the process of the water body passing through the inside of the driving cavity, the driving blade 2105 can be driven to rotate, which can drive the drainage plate 2107 to strengthen the rotation effect of the water body, further apply spiral motion to the water body, and further achieve the effect of reducing turbulence.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A liquid collecting pipe for a jet grouting pump, comprising a pump body (1), characterized in that, One side of the pump body (1) is communicated with two water collecting pipe bodies (101). One end of one of the water collecting pipe bodies (101) is provided with a water inlet (102), and one end of the other water collecting pipe body (101) is provided with a water outlet (103). An inlet bend (1021) is formed inside the water collecting pipe body (101) provided with the water inlet (102), and an outlet bend (1031) is formed inside the water collecting pipe body (101) provided with the water outlet (103). Shunt components are arranged inside both the inlet bend (1021) and the outlet bend (1031). One end of one of the water collecting pipe bodies (101) is provided with a guiding structure (2) communicated with the water inlet (102). Among them, the shunt component includes an inlet shunt piece (3) and an outlet shunt piece (301). The inlet shunt piece (3) is fixedly connected to the middle of the inner wall of the inlet bend (1021), and the outlet shunt piece (301) is fixedly connected to the middle of the inner wall of the outlet bend (1031). The starting ends and terminal ends of the inlet shunt piece (3) and the outlet shunt piece (301) are both in arc transition. The guiding structure (2) includes a mounting shell (201) fixedly connected to one end of the water collecting pipe body (101). A communication cavity communicated with the water inlet (102) is opened on the surface of the mounting shell (201), and an auxiliary component (21) and a guiding component (22) are arranged inside the communication cavity. The guiding component (22) further includes a partition plate (2203) fixedly connected to the inner wall of the communication cavity. A mounting plate (2201) is fixedly connected to the inner wall of the communication cavity and located between the partition plate (2203) and the water inlet (102). A driving cavity is formed between the mounting plate (2201) and the partition plate (2203). The auxiliary component (21) includes a rotating shaft (2101) arranged inside the driving cavity. The lower end of the rotating shaft (2101) penetrates out of the partition plate (2203) and is fixedly connected with a cleaning rod (2104). The surface of the cleaning rod (2104) is in contact with the surface of the partition plate (2203). The upper end of the rotating shaft (2101) penetrates out of the mounting plate (2201) and is fixedly connected with annularly distributed mounting rods (2106). The other ends of the mounting rods (2106) are fixedly connected with a diversion plate (2107). The cross-sectional shape of the diversion plate (2107) is wavy, and both ends of the diversion plate (2107) are arranged in a circular arc shape. Annularly distributed filter holes (2204) are opened on the surface of the partition plate (2203), and the inner wall cross-section of the filter holes (2204) is arranged in an inclined plane. Annularly distributed diversion grooves (2202) are opened on the surface of the mounting plate (2201), and the inner wall of the diversion grooves (2202) is in an arc surface. Annularly distributed driving blades (2105) are fixedly connected to the surface of the rotating shaft (2101) and located inside the driving cavity.

2. The liquid collecting pipe for a jet grouting pump according to claim 1, characterized in that, The imported flow splitter (3) divides the imported bend (1021) into two parts, namely the outer side (1022) and the inner side (1023) of the imported bend, and the exported flow splitter (301) divides the exported bend (1031) into two parts, namely the outer side (1032) and the inner side (1033) of the exported bend.

3. The liquid collecting pipe for a jet grouting pump according to claim 2, wherein The cross-sectional areas of the outer side (1022) and the inner side (1023) of the imported bend are equal, and the cross-sectional areas of the outer side (1032) and the inner side (1033) of the exported bend are equal.

4. The liquid collecting pipe for a jet grouting pump according to claim 1, characterized in that, The starting point and the ending point of the imported flow splitter (3) coincide with the starting point and the ending point of the imported bend (1021), and the starting point and the ending point of the exported flow splitter (301) coincide with the starting point and the ending point of the exported bend (1031).

5. The liquid collecting pipe for a jet grouting pump according to claim 1, characterized in that, A rotating ring (2102) is rotatably connected to the inner wall of the driving cavity. An annularly distributed connecting rod (2103) is fixedly connected to the inner side of the rotating ring (2102), and the other end of the connecting rod (2103) is fixedly connected to the surface of the rotating shaft (2101).

6. The liquid collecting pipe for a jet grouting pump according to claim 1, characterized in that, The driving blade (2105) is located between the connecting rod (2103) and the partition plate (2203).

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