Liquid collecting pipe for rotary jet pump

Abstract

The invention belongs to the technical field of rotary pumps, and particularly discloses a liquid collecting pipe for a rotary jet pump, which comprises a pump body, one side of the pump body is communicated with two water collecting pipe bodies, the other end of one water collecting pipe body is provided with a water inlet, and the other end of the other water collecting pipe body is provided with a water outlet. An inlet bend is formed in the water collecting pipe body provided with the water inlet; the inlet bend and the outlet bend can be divided into two flow channels with the same sectional area through the flow dividing assembly, the flow of the inner side and the outer side of the inlet and the flow of the outer side of the outlet are basically equal, and therefore the effect of eliminating turbulence is achieved, the performance of the pump is improved, and meanwhile the effect of preliminarily eliminating turbulence of water guided into the water collecting pipe body can be achieved through the auxiliary assembly; the water body is conveyed into the water collecting pipe body in a spiral shape, the fluid can be more tended to be in a laminar flow state by applying spiral motion, and the intensity and frequency of turbulent flow are further reduced.

Description

Technical Field

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

[0002] The rotary jet pump is a small flow, high lift centrifugal pump. 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 rotary jet pump is working, the liquid flows in at high speed from the inlet of the collecting pipe, and begins to diffuse after entering the bend. The speed decreases significantly along the center direction of the diffusion section, and the diffusion effect is obvious. Due to the expansion of the diffusion section pipe diameter and the viscosity of the wall, the liquid mainly flows on the outside of the pipe with a higher speed, while turbulence is generated on the inside, causing increased energy loss of the liquid; especially for rotary jet pumps with a large flow rate, the closing head is reduced and a hump is generated on the performance curve.

[0004] The liquid flows out of the outlet of the collecting pipe at a high speed and begins to diffuse after entering the bend. Due to the expansion of the diameter of the diffusion section and the viscosity of the wall, the liquid mainly flows on the outside of the pipe at a higher speed, while turbulence occurs on the inside, resulting in increased liquid loss and increased pump vibration. Therefore, those skilled in the art have proposed a liquid collecting pipe for a rotary jet pump to solve the above problems. Summary of the invention

[0005] In view of this, the technical problem to be solved by the present invention is to propose a liquid collecting pipe for a rotary jet pump to solve the problem in the prior art that liquid enters the liquid collecting pipe to cause turbulence and affect the use effect of the rotary pump.

[0006] To achieve the above purpose, the present invention provides a liquid collecting pipe for a rotary jet pump, comprising a pump body, one side of the pump body is connected to two water collecting pipe bodies, one of the water collecting pipe bodies is provided with a water inlet at the other end, the other end of the other water collecting pipe body is provided with a water outlet, and the water collecting pipe body provided with the water inlet forms an inlet bend inside, the water collecting pipe body provided with the water outlet forms an outlet bend inside, and the inlet bend and the outlet bend are both provided with flow diversion components inside, and one end of one of the water collecting pipe bodies is provided with a guide structure connected with the water inlet; The flow splitter assembly includes an inlet flow splitter and an outlet flow splitter, wherein the inlet flow splitter is fixedly connected to the middle of the inner wall of the inlet bend, and the outlet flow splitter is fixedly connected to the middle of the inner wall of the outlet bend, and the starting end and the terminal end of the inlet flow splitter and the outlet flow splitter are both arc transitions; The guiding structure comprises a mounting shell fixedly connected to one end of the water collecting pipe body, a connecting cavity connected to the water inlet is provided on the surface of the mounting shell, and an auxiliary component and a guiding component are arranged inside the connecting cavity.

[0007] In the above technical solution, preferably, the inlet diverter divides the inlet bend into two parts, an outer side of the inlet bend and an inner side of the inlet bend, and the outlet diverter divides the outlet bend into two parts, an outer side of the outlet bend and an inner side of the outlet bend.

[0008] In the above technical solution, preferably, the cross-sectional areas of the outer side of the inlet curve and the inner side of the inlet curve are equal, and the cross-sectional areas of the outer side of the exit curve and the inner side of the exit curve are equal.

[0009] In the above technical solution, preferably, the starting point and end point of the inlet diverter piece are consistent with the starting point and end point of the inlet bend, and the starting point and end point of the outlet diverter piece are consistent with the starting point and end point of the outlet bend.

[0010] In the above technical solution, preferably, the guide assembly includes a partition fixedly connected to the inner wall of the connecting cavity, the surface of the partition is provided with annularly distributed filter holes, the inner wall cross-section of the filter holes is inclined, the inner wall of the connecting 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.

[0011] In the above technical solution, preferably, the surface of the mounting plate is provided with drainage grooves distributed in an annular shape, and the inner wall of the drainage groove is arranged in the form of an arc surface.

[0012] In the above technical scheme, preferably, the auxiliary component includes a rotating shaft arranged inside the driving chamber, the lower end of the rotating shaft passes through the partition and is fixedly connected to 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 passes through the mounting plate and is fixedly connected to a ring-distributed mounting rod, the other end of the mounting rod is fixedly connected to a guide plate, the cross-sectional shape of the guide plate is wavy, and both ends of the guide plate are arranged in a circular arc shape.

[0013] In the above technical solution, preferably, the inner wall of the driving cavity is rotatably connected with a rotating ring, the inner side of the rotating ring is fixedly connected with annularly distributed connecting rods, and the other end of the connecting rods is fixedly connected to the surface of the rotating shaft.

[0014] In the above technical solution, preferably, the surface of the rotating shaft is fixedly connected with driving blades which are distributed in an annular shape and located inside the driving cavity, and the driving blades are located between the connecting rod and the partition.

[0015] Compared with the prior art, the present invention has the following beneficial effects: By setting up a diversion component, the inlet bend and the outlet bend can be separated to form two flow channels with equal cross-sectional areas. The inner and outer flow rates of the inlet and outlet are basically equal, thereby achieving the effect of eliminating turbulence and improving the performance of the pump. At the same time, the guide component can be used to achieve the effect of initially eliminating turbulence in the water introduced into the water collecting pipe body, and the water is transported in a spiral shape to the interior of the water collecting pipe body. By applying spiral motion, the fluid can be made to tend to a laminar state, further reducing the intensity and frequency of turbulence.

[0016] Under the action of the guiding structure, the water body is initially transported to the inside of the water collecting pipe in a spiral shape through the guiding groove. At the same time, after the water body enters the driving cavity, the driving blade is driven to rotate by the water body, so that the driving blade can drive the rotating shaft to make the guide plate rotate synchronously, further applying spiral motion to the water body, and enhancing the effect of eliminating turbulence.

[0017] The setting of filter holes can filter out impurity particles in the water body, reduce the impurity particles entering the interior of the water collecting pipe body with the water body, and cause the inner wall of the water collecting pipe body to wear and form a rough surface. It avoids the rough surface caused by wear causing the viscosity of water to increase when the water body passes through, further causing the speed difference between the outer water and the inner water, resulting in turbulence, and effectively improves the turbulence reduction effect of the water collecting pipe body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the connection between the inlet diverter and the inlet bend of the present invention; Figure 3 It is a schematic diagram of the connection between the outlet diverter and the outlet bend of the present invention; Figure 4 It is a schematic diagram of the connection between the guide structure and the water inlet of the present invention; Figure 5 It is a schematic diagram of the distribution of the auxiliary components and the guiding components of the present invention; Figure 6 It is a structural schematic diagram of the auxiliary components of the present invention; Figure 7 Schematic diagram of the distribution of drainage grooves of the present invention; Figure 8 Schematic diagram of the distribution of filter holes of the present invention.

[0019] In the figure: 1. pump body; 101. water collecting pipe body; 102. water inlet; 1021. inlet bend; 1022. outside of inlet bend; 1023. inside of inlet bend; 103. water outlet; 1031. outlet bend; 1032. outside of outlet bend; 1033. inside of outlet bend; 2. guide 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. guide plate; 22. guide component; 2201. mounting plate; 2202. drainage groove; 2203. partition; 2204. filter hole; 3. inlet diverter; 301. outlet diverter. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of 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 specific embodiments disclosed below.

[0022] like Figure 1-Figure 8 A liquid collecting pipe for a rotary jet pump shown in the figure comprises a pump body 1, one side of the pump body 1 is connected with two water collecting pipe bodies 101, the other end of one of the water collecting pipe bodies 101 is provided with a water inlet 102, the other end of the other water collecting pipe body 101 is provided with a water outlet 103, and the water collecting pipe body 101 provided with the water inlet 102 forms an inlet bend 1021 inside, and the water collecting pipe body 101 provided with the water outlet 103 forms an outlet bend 1031 inside, and the inlet bend 1021 and the outlet bend 1031 are both provided with flow diversion components inside, and one end of one of the water collecting pipe bodies 101 is provided with a guide structure 2 connected with the water inlet 102; Among them, the diverter component includes an inlet diverter plate 3 and an outlet diverter plate 301. The inlet diverter plate 3 is fixedly connected to the middle part of the inner wall of the inlet bend 1021, and the outlet diverter plate 301 is fixedly connected to the middle part of the inner wall of the outlet bend 1031. The starting end and the terminal end of the inlet diverter plate 3 and the outlet diverter plate 301 both adopt arc transition, which can reduce the impact loss and eddy current loss of the liquid.

[0023] like Figure 1-Figure 8 As shown, the guide structure 2 includes a mounting shell 201 fixedly connected to one end of the water collecting pipe body 101, a connecting cavity connected to the water inlet 102 is opened on the surface of the mounting shell 201, and an auxiliary component 21 and a guide component 22 are arranged inside the connecting cavity.

[0024] The inlet splitter 3 divides the inlet bend 1021 into two parts, namely, the outer side 1022 of the inlet bend and the inner side 1023 of the inlet bend. The outlet splitter 301 divides the outlet bend 1031 into two parts, namely, the outer side 1032 of the outlet bend and the inner side 1033 of the outlet bend.

[0025] The cross-sectional areas of the outer side 1022 of the inlet curve and the inner side 1023 of the inlet curve are equal, and the cross-sectional areas of the outer side 1032 of the outlet curve and the inner side 1033 of the outlet curve are equal.

[0026] The starting point and the end point of the inlet diverter plate 3 are consistent with the starting point and the end point of the inlet bend 1021 , and the starting point and the end point of the outlet diverter plate 301 are consistent with the starting point and the end point of the outlet bend 1031 .

[0027] The inlet diverter plate 3 and the outlet diverter plate 301 are arranged so that 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, thereby eliminating the effect of turbulence, improving the performance of the pump, and reducing the increase in energy loss of the liquid due to the fact that the liquid mainly flows on the outside of the tube at a higher speed, while turbulence is generated on the inside.

[0028] like Figure 1-Figure 8 As shown, the guide assembly 22 includes a partition 2203 fixedly connected to the inner wall of the connecting 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 inclined, and the inner wall of the connecting cavity is fixedly connected with a mounting plate 2201 located between the partition 2203 and the water inlet 102, and a driving cavity is formed between the mounting plate 2201 and the partition 2203.

[0029] The surface of the mounting plate 2201 is provided with an annular drainage groove 2202 , and the inner wall of the drainage groove 2202 is arranged in an arc shape.

[0030] The filter holes 2204 are arranged to intercept impurity particles in the water introduced into the water inlet 102, and prevent the impurity particles from entering the inner wall of the water collecting pipe body 101 and causing the inner wall of the water collecting pipe body 101 to be worn, thereby reducing the phenomenon that the viscosity of the water is increased when the water flows through the water collecting pipe body 101 due to the rough inner wall formed by the wear of the inner wall of the water collecting pipe body 101, further causing the speed difference between the outer water and the inner water, resulting in turbulence, and effectively improving the turbulence reduction effect of the water collecting pipe body 101; At the same time, the inclined inner wall of the filter hole 2204 can initially guide the water passing through it, making it tilted in the driving cavity, and the drainage groove 2202 arranged on the inner wall with a circular arc surface can further guide the spiral water body into the interior 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 spiral motion, the dynamic characteristics of the fluid can be changed, making the fluid more inclined to a laminar state, thereby reducing the intensity and frequency of turbulence.

[0031] like Figure 1-Figure 8 As shown, the auxiliary component 21 includes a rotating shaft 2101 arranged inside the driving chamber, the lower end of the rotating shaft 2101 passes through the partition 2203 and is fixedly connected to a cleaning rod 2104, the surface of the cleaning rod 2104 is in contact with the surface of the partition 2203, the upper end of the cleaning rod 2104 passes through the mounting plate 2201 and is fixedly connected to a ring-shaped mounting rod 2106, the other end of the mounting rod 2106 is fixedly connected to a guide plate 2107, the cross-sectional shape of the guide plate 2107 is wavy, and both ends of the guide plate 2107 are arranged in a circular arc shape.

[0032] 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 an annularly distributed connecting rod 2103 , and the other end of the connecting rod 2103 is fixedly connected to the surface of the rotating shaft 2101 .

[0033] The surface of the rotating shaft 2101 is fixedly connected with driving blades 2105 which are distributed in an annular shape and located inside the driving cavity. The driving blades 2105 are located between the connecting rod 2103 and the partition plate 2203 .

[0034] After the water passes through the filter hole 2204, it can push the driving blade 2105 to rotate, and in this process, it can drive the rotating shaft 2101 to rotate. The rotation of the rotating shaft 2101 can rotate the cleaning rod 2104 to achieve the effect of cleaning the surface of the partition 2203, avoiding the accumulation of impurities that affect the flow of water. At the same time, the drainage plate 2107 is driven to rotate through the mounting rod 2106, and the rotation direction of the driving blade 2105 is consistent with the spiral flow direction of the water guided by the drainage groove 2202, so that it can drive the drainage plate 2107 to enhance the rotation effect of the water, further apply spiral motion to the water, and further achieve the effect of reducing turbulence.

[0035] Working principle: The starting and terminal ends of the inlet diverter 3 and the outlet diverter 301 are both arc-shaped, which can reduce the impact loss and eddy current loss of the liquid. At the same time, the inlet diverter 3 and the outlet diverter 301 are set so that the cross-sectional area of ​​the outer side 1022 of the inlet bend is equal to that of the inner side 1023 of the inlet bend, and the cross-sectional area of ​​the outer side 1032 of the outlet bend is equal to that of the inner side 1033 of the outlet bend, thereby eliminating the effect of turbulence, improving the performance of the pump, and reducing the increase in energy loss of the liquid caused by turbulence generated on the inner side due to the liquid mainly flowing on the outer side of the pipe at a higher speed. Before the water is introduced into the water inlet 102, the turbulence in the water can be preliminarily eliminated through the guide component 22, reducing the water Entering the water collecting pipe body 101 further enhances the turbulence, and the drainage groove 2202 arranged on the arc surface of the inner wall can further guide the spiral water into the water collecting pipe body 101. The spiral water presents a 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 inclined to a laminar state, thereby reducing the intensity and frequency of turbulence. In the process of the water passing through the driving cavity, the driving blade 2105 can be driven to rotate so that it can drive the drainage plate 2107 to enhance the rotation effect of the water, further apply spiral motion to the water, and further achieve the effect of reducing turbulence.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A liquid collecting pipe for a rotary jet pump, comprising a pump body (1), characterized in that: One side of the pump body (1) is connected to two water collecting pipe bodies (101), wherein the other end of one of the water collecting pipe bodies (101) is provided with a water inlet (102), and the other end of the other water collecting pipe body (101) is provided with a water outlet (103), and 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), and flow diversion components are provided inside the inlet bend (1021) and the outlet bend (1031), and one end of one of the water collecting pipe bodies (101) is provided with a guide structure (2) connected to the water inlet (102); The flow splitter assembly comprises an inlet flow splitter (3) and an outlet flow splitter (301), the inlet flow splitter (3) being fixedly connected to the middle portion of the inner wall of the inlet bend (1021), the outlet flow splitter (301) being fixedly connected to the middle portion of the inner wall of the outlet bend (1031), and the starting end and the terminal end of the inlet flow splitter (3) and the outlet flow splitter (301) both adopt arc transition; The guide structure (2) comprises a mounting shell (201) fixedly connected to one end of the water collecting pipe body (101); a connecting cavity connected to the water inlet (102) is provided on the surface of the mounting shell (201); an auxiliary component (21) and a guide component (22) are arranged inside the connecting cavity.

2. A liquid collecting pipe for a rotary spray pump according to claim 1, characterized in that: The inlet flow divider (3) divides the inlet bend (1021) into two parts, an outer side (1022) of the inlet bend and an inner side (1023) of the inlet bend, and the outlet flow divider (301) divides the outlet bend (1031) into two parts, an outer side (1032) of the outlet bend and an inner side (1033) of the outlet bend.

3. A liquid collecting pipe for a rotary spray pump according to claim 2, characterized in that: The cross-sectional areas of the outer side (1022) of the inlet curve and the inner side (1023) of the inlet curve are equal, and the cross-sectional areas of the outer side (1032) of the outlet curve and the inner side (1033) of the outlet curve are equal.

4. A liquid collecting pipe for a rotary spray pump according to claim 1, characterized in that: The starting point and the end point of the inlet flow splitter (3) are consistent with the starting point and the end point of the inlet bend (1021), and the starting point and the end point of the outlet flow splitter (301) are consistent with the starting point and the end point of the outlet bend (1031).

5. The liquid collecting pipe for a rotary spray pump according to claim 1, characterized in that: The guide assembly (22) comprises a partition (2203) fixedly connected to the inner wall of the connecting cavity, the surface of the partition (2203) is provided with filter holes (2204) distributed in an annular pattern, the inner wall cross-section of the filter holes (2204) is arranged in an inclined surface, and the inner wall of the connecting cavity is fixedly connected to a mounting plate (2201) located between the partition (2203) and the water inlet (102), and a driving cavity is formed between the mounting plate (2201) and the partition (2203).

6. A liquid collecting pipe for a rotary spray pump according to claim 5, characterized in that: The surface of the mounting plate (2201) is provided with drainage grooves (2202) distributed in an annular pattern, and the inner wall of the drainage groove (2202) is arranged in the form of an arc surface.

7. A liquid collecting pipe for a rotary spray pump according to claim 6, characterized in that: The auxiliary component (21) comprises a rotating shaft (2101) arranged inside the driving chamber, the lower end of the rotating shaft (2101) passes through the partition (2203) and is fixedly connected to a cleaning rod (2104), the surface of the cleaning rod (2104) is in contact with the surface of the partition (2203), the upper end of the cleaning rod (2104) passes through the mounting plate (2201) and is fixedly connected to an annularly distributed mounting rod (2106), the other end of the mounting rod (2106) is fixedly connected to a guide plate (2107), the cross-section of the guide plate (2107) is wavy, and both ends of the guide plate (2107) are arranged in an arc shape.

8. A liquid collecting pipe for a rotary spray pump according to claim 7, characterized in that: The inner wall of the driving cavity is rotatably connected to a rotating ring (2102), the inner side of the rotating ring (2102) is fixedly connected to annularly distributed connecting rods (2103), and the other end of the connecting rods (2103) is fixedly connected to the surface of the rotating shaft (2101).

9. A liquid collecting pipe for a rotary spray pump according to claim 8, characterized in that: The surface of the rotating shaft (2101) is fixedly connected with driving blades (2105) distributed in an annular manner and located inside the driving cavity, and the driving blades (2105) are located between the connecting rod (2103) and the partition plate (2203).

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