A continuously self-priming pump

Abstract

The application discloses a kind of continuous self-bleeding self-suction pumps, it is related to self-suction pump technical field, including main body, the upper portion of the main body is provided with self-suction tank, the top of the main body is equipped with steam jacket heat tracing, the upper end of steam jacket heat tracing is equipped with injection device, the lower end of self-suction tank is provided with sealing device, the middle of sealing device is equipped with pipeline, the bottom of pipeline is equipped with fixing device, the right end of fixing device is provided with ground tank, the upper end of ground tank is equipped with nitrogen pressure exhaust pipeline device.The application is fixed on the upper end of steam jacket heat tracing by outer frame, then connects steam pipe line by the pipe joint of right end, exhausts gas in ground tank to expansion pipe, carries out gas expansion, exhausts the gas after completion of expansion to mixing chamber, makes it mixed jet pump, then is discharged by nozzle, without manual filling pump.Again by the pipeline cavity of through frame inner cavity through connecting pipeline.

Description

Technical Field

[0001] This invention relates to the field of self-priming pump technology, and specifically to a self-priming pump capable of continuous self-venting and self-exhausting. Background Technology

[0002] Self-priming pumps are a type of self-priming centrifugal pump. They feature compact structure, convenient operation, stable running, easy maintenance, high efficiency, long service life, and strong self-priming capability. No foot valve is required in the pipeline; only a certain amount of priming liquid needs to be stored in the pump body before operation. Different materials can be used for self-priming pumps depending on the liquid. The working principle of a self-priming pump is as follows: before starting the pump, the pump casing is filled with water (or the pump casing itself contains water). After starting, the impeller rotates at high speed, causing the water in the impeller channels to flow towards the volute. At this time, a vacuum is formed at the inlet, causing the inlet check valve to open, allowing air from the suction pipe to enter the pump and reach the outer edge through the impeller channels.

[0003] However, existing continuous self-venting and self-priming pumps have certain defects and need to be improved.

[0004] The existing technology has the following problems:

[0005] 1. Existing continuous self-venting and self-priming pumps require manual priming before starting, resulting in poor performance.

[0006] 2. Existing continuous self-venting and self-priming pumps suffer from high failure rates in tanks and pipelines, high maintenance costs, and easy leakage of sealed vapor gas during use.

[0007] 3. Existing continuous self-venting and self-priming pumps are inconvenient to disassemble during pipeline maintenance and inspection, resulting in wasted time.

[0008] 4. Existing continuous self-venting and self-priming pumps cannot handle toxic, harmful, flammable, or volatile chemical media, making initial priming difficult. Summary of the Invention

[0009] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0010] A continuously self-priming and self-venting pump includes a main body, a self-priming tank at the top of the main body, a steam jacketed heat tracing device at the top of the main body, an injection device at the upper end of the steam jacketed heat tracing device, a sealing device at the lower end of the self-priming tank, a pipe at the middle of the sealing device, a fixing device at the bottom end of the pipe, a ground tank at the right end of the fixing device, a nitrogen pressure release pipeline device at the upper end of the ground tank, an outer frame at the lower end of the outer frame being movably connected to the upper end of the steam jacketed heat tracing device, an expansion pipe at the middle of the inner cavity of the outer frame, a mixing chamber at the lower end of the expansion pipe, a connecting port at the right end of the mixing chamber, and a nozzle at the lower end of the mixing chamber, and a through frame at the upper end of the through frame being movably connected to the bottom end of the self-priming tank, a rubber ring at the inner cavity of the through frame, snap-fit ​​rings at both sides of the lower end of the rubber ring, a pipe cavity at the middle of the snap-fit ​​ring, and a leak-proof sealing ring at the bottom end of the pipe cavity.

[0011] A further improvement of the technical solution of the present invention is that the inner surface of the outer frame is fixedly connected to the surface of the expansion tube.

[0012] A further improvement of the technical solution of the present invention is that the lower end of the mixing chamber is fixedly connected to the surface of the pipe opening.

[0013] A further improvement of the technical solution of the present invention is that the inner surface of the through frame is movably connected to the surface of the rubber ring.

[0014] A further improvement of the technical solution of the present invention is that the lower surface of the pipe cavity is fixedly connected to the surface of the leak-proof sealing ring.

[0015] A further improvement of the technical solution of the present invention is that: the fixing device includes a fixing bolt, the right end of the fixing bolt is movably connected to the surface of the ground tank, an adjusting valve is installed on the left side of the fixing bolt, a compression spring is provided on the right surface of the fixing bolt, and a fixing sleeve is installed on the inner side of the fixing bolt.

[0016] A further improvement of the technical solution of the present invention is that: the left side of the fixing bolt is fixedly connected to the right end of the regulating valve, and the inner side of the surface of the fixing bolt is movably connected to the surface of the fixing sleeve plate.

[0017] A further improvement of the technical solution of the present invention is that: the nitrogen pressure release pipeline device includes a valve port, the left end of the valve port is movably connected to the right side of the self-priming tank, a transmitter is provided at the right end of the valve port, a steam pipeline is installed at the upper end of the transmitter, a parallel branch pipe is provided at the right end of the transmitter, a lower pipeline is installed at the lower end of the parallel branch pipe, a circulating gas tank is provided at the bottom end of the lower pipeline, and a branch pipeline is installed at the lower end of the circulating gas tank.

[0018] A further improvement of the technical solution of the present invention is that: the right end of the valve port is fixedly connected to the left end of the transmitter, and the lower end of the circulating gas tank is fixedly connected to the top end of the branch pipeline.

[0019] Due to the adoption of the above technical solution, the technical progress achieved by this invention compared to the prior art is as follows:

[0020] 1. This invention provides a continuously self-priming and self-venting pump. Through the combined action of the external frame, expansion pipe, mixing chamber, connection port, and nozzle, it eliminates the need for manual priming before pump start-up, preventing performance degradation. The external frame is fixed to the upper end of the steam jacket heating system, and the steam shut-off line is connected to the right-side connection port. Gas in the tank is discharged into the expansion pipe for expansion, and the expanded gas is then discharged into the mixing chamber for mixing and ejection before being discharged through the nozzle, eliminating the need for manual priming. An ejector is installed at the top of the self-priming tank, using the pump's minimum return fluid as working power to extract secondary gas generated in the self-priming tank and return it to the tank, where it is then discharged through the tank's exhaust system. This prevents secondary gas from disrupting the vacuum in the inlet pipe and causing pump failure. Additionally, a steam line is provided to the ejector, allowing steam to be used as working power to extract gas from the self-priming tank.

[0021] 2. This invention provides a continuously self-venting and self-priming pump. Through the combined action of the through frame, rubber ring, snap ring, pipe cavity, and leak-proof sealing ring, it can avoid the high failure rate of the tank pipe, thus avoiding high maintenance costs, and also avoid the leakage of sealed vapor. The pipe is connected through the pipe cavity in the through frame, the upper end of the pipe is sealed by the rubber ring, the lower end of the pipe is ringed by the snap ring to prevent it from falling off, and the leak-proof sealing ring at the bottom can ensure that the pipe will not leak gas during use.

[0022] 3. This invention provides a continuously self-venting and self-priming pump. Through the combined action of fixing bolts, adjusting valve, compression spring, and fixing sleeve, the pipeline can be quickly disassembled during maintenance and inspection, avoiding wasted time. The bottom end of the pipeline is wrapped around the middle of the fixing sleeve, and then fixed to the left side of the tank by the connecting fixing bolts. Rotating the adjusting valve drives the compression spring to generate pressure, firmly pressing the bottom end of the bolt onto the surface of the tank.

[0023] 4. This invention provides a continuous self-priming and self-venting pump. Through the combined action of a valve port, transmitter, steam pipeline, parallel branch pipe, lower pipeline, circulating gas tank, and branch pipelines, it can effectively handle toxic, harmful, flammable, and volatile chemical media, thus avoiding the difficulties of initial priming. The valve port is connected to the right end of the self-priming tank, and the hazardous gas is guided to the circulating gas tank via the branch pipeline at the bottom. From there, it is guided to the lower pipeline, and then the parallel branch pipe sends the hazardous gas through the transmitter and steam pipeline to the self-priming tank for treatment. A nitrogen pressure discharge pipeline is connected to the ground tank. For situations where initial priming of toxic, harmful, flammable, and volatile chemical media is difficult, nitrogen can be introduced into the ground tank, forcing the material in the ground tank to be discharged into the self-priming tank through the inlet pipeline of the self-priming pump, achieving closed-loop priming and solving safety and environmental protection issues. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the continuously self-venting and self-priming pump of the present invention;

[0025] Figure 2 This is a schematic diagram of the spraying device of the present invention;

[0026] Figure 3 This is a schematic diagram of the sealing device of the present invention;

[0027] Figure 4 This is a schematic diagram of the fixing device of the present invention;

[0028] Figure 5 This is a schematic diagram of the nitrogen pressure purging pipeline device of the present invention;

[0029] Figure 6 This is a partial enlarged view of the structural schematic diagram of the fixing device of the present invention.

[0030] In the diagram: 1. Main body; 2. Self-priming tank; 3. Steam jacketed heating; 4. Injection device; 5. Sealing device; 6. Pipeline; 7. Fixing device; 8. Ground tank; 9. Nitrogen pressure release pipeline device; 41. External frame; 42. Expansion pipe; 43. Mixing chamber; 44. Connecting port; 45. Nozzle; 51. Through frame; 52. Rubber ring; 53. Snap-fit ​​ring; 54. Pipeline cavity; 55. Leak-proof sealing ring; 71. Fixing bolt; 72. Regulating valve; 73. Compression spring; 74. Fixing sleeve; 91. Valve port; 92. Transmitter; 93. Steam pipeline; 94. Parallel branch pipe; 95. Downline; 96. Circulating gas tank; 97. Branch pipeline. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to embodiments:

[0032] Example 1

[0033] like Figure 1-6 As shown, the present invention provides a continuously self-venting and self-priming pump, including a main body 1, a self-priming tank 2 disposed on the upper part of the main body 1, a steam jacketed heat tracing 3 installed at the top of the main body 1, an injection device 4 installed at the upper end of the steam jacketed heat tracing 3, a sealing device 5 disposed at the lower end of the self-priming tank 2, a pipe 6 disposed in the middle of the sealing device 5, a fixing device 7 disposed at the bottom end of the pipe 6, a ground tank 8 disposed at the right end of the fixing device 7, and a nitrogen pressure discharge pipeline device 9 disposed at the upper end of the ground tank 8.

[0034] Example 2

[0035] like Figure 1-6 As shown, based on Embodiment 1, the present invention provides a technical solution: Preferably, the injection device 4 includes an outer frame 41, the lower end of the outer frame 41 is movably connected to the upper end of the steam jacket heat tracing 3, an expansion pipe 42 is installed in the middle of the inner cavity of the outer frame 41, a mixing chamber 43 is provided at the lower end of the expansion pipe 42, a pipe port 44 is installed at the right end of the mixing chamber 43, a nozzle 45 is provided at the lower end of the mixing chamber 43, the inner cavity surface of the outer frame 41 is fixedly connected to the surface of the expansion pipe 42, and the lower end of the mixing chamber 43 is fixedly connected to the surface of the pipe port 44.

[0036] In this embodiment, manual priming is unnecessary before pump start-up, preventing performance degradation. The pump is fixed to the upper end of the steam jacket heating 3 via an external frame 41, and connected to a steam pipeline 93 through a connecting port 44 on the right end. Gas from the ground tank 8 is discharged into the expansion pipe 42 for gas expansion. The expanded gas is then discharged into the mixing chamber 43, reaching the mixing jet pump, and finally exiting through the nozzle 45, eliminating the need for manual priming. An ejector is installed at the top of the self-priming tank 2, using the pump's minimum return fluid as its working power to extract the secondary gas generated in the self-priming tank 2 and return it to the ground tank 8, where it is discharged through the tank's exhaust system. This prevents the secondary gas from disrupting the vacuum in the inlet pipeline and causing the self-priming pump to fail. Additionally, a steam line is provided to the ejector, allowing steam to be used as its working power to extract the gas from the self-priming tank 2.

[0037] Example 3

[0038] like Figure 1-6 As shown, based on Embodiment 1, the present invention provides a technical solution: Preferably, the sealing device 5 includes a through frame 51, the upper end of the through frame 51 is movably connected to the bottom end of the self-priming can 2, a rubber ring 52 is provided in the inner cavity of the through frame 51, snap rings 53 are installed on both sides of the lower end of the rubber ring 52, a pipe cavity 54 is provided in the middle of the snap ring 53, a leak-proof sealing ring 55 is installed at the bottom end of the pipe cavity 54, the inner surface of the through frame 51 is movably connected to the surface of the rubber ring 52, and the lower surface of the pipe cavity 54 is fixedly connected to the surface of the leak-proof sealing ring 55.

[0039] In this embodiment, the high failure rate of the tank pipeline, which leads to high maintenance costs, can be avoided. It also avoids leakage of sealed vapor. The pipeline 6 is connected through the pipeline cavity 54 that penetrates the inner cavity of the frame 51. The upper end of the pipeline is sealed by the rubber ring 52, and the lower end of the snap ring 53 encircles the pipeline 6 to prevent it from falling off. The leak-proof sealing ring 55 at the bottom can ensure that the pipeline 6 will not leak gas during use.

[0040] Example 4

[0041] like Figure 1-6 As shown, based on Embodiment 1, the present invention provides a technical solution: Preferably, the fixing device 7 includes a fixing bolt 71, the right end of the fixing bolt 71 is movably connected to the surface of the ground tank 8, an adjusting valve 72 is installed on the left side of the fixing bolt 71, a compression spring 73 is provided on the right surface of the fixing bolt 71, a fixing sleeve 74 is installed on the inner side of the fixing bolt 71, the left side of the fixing bolt 71 is fixedly connected to the right end of the adjusting valve 72, and the inner surface of the fixing bolt 71 is movably connected to the surface of the fixing sleeve 74 through it.

[0042] In this embodiment, the pipe 6 can be quickly disassembled during maintenance and inspection to avoid wasting time. The bottom end of the pipe 6 is wrapped around the middle of the fixing sleeve 74, and then fixed to the left side of the tank 8 by the connecting fixing bolt 71. Rotating the regulating valve 72 drives the compression spring 73 to generate pressure, firmly pressing the bottom end of the bolt onto the surface of the tank.

[0043] Example 5

[0044] like Figure 1-6 As shown, based on Embodiment 1, the present invention provides a technical solution: Preferably, the nitrogen pressure release pipeline device 9 includes a valve port 91, the left end of the valve port 91 is movably connected to the right side of the self-priming tank 2, a transmitter 92 is provided at the right end of the valve port 91, a steam pipeline 93 is installed at the upper end of the transmitter 92, a parallel branch pipe 94 is provided at the right end of the transmitter 92, a lower pipeline 95 is installed at the lower end of the parallel branch pipe 94, a circulating gas tank 96 is provided at the bottom end of the lower pipeline 95, a branch pipeline 97 is installed at the lower end of the circulating gas tank 96, the right end of the valve port 91 is fixedly connected to the left end of the transmitter 92, and the lower end of the circulating gas tank 96 is fixedly connected to the top end of the branch pipeline 97.

[0045] In this embodiment, the problem of toxic, harmful, flammable, and volatile chemical media being pumped at the beginning can be effectively solved, thus avoiding the difficulties of initial pump priming. The gas is connected to the right end of the self-priming tank 2 via valve port 91, and the hazardous gas is guided to the circulating gas tank 96 via a branch line 97 at the bottom. From there, it is guided to the lower pipeline 95, and then sent to the self-priming tank 2 via a parallel branch line 94 through a transmitter 92 and a steam pipeline 93 for treatment. A nitrogen pressure discharge pipeline is connected to the ground tank 8. For situations where initial pump priming of toxic, harmful, flammable, and volatile chemical media is difficult, nitrogen can be introduced into the ground tank 8, forcing the material in the ground tank 8 to be discharged into the self-priming tank 2 through the inlet pipeline of the self-priming pump, achieving closed-loop pump priming and solving safety and environmental protection issues.

[0046] The working principle of this continuously self-venting and self-priming pump will be explained in detail below.

[0047] like Figure 1-6As shown, this continuous self-priming and self-venting pump can be used without manual priming before starting, thanks to the injection device 4, thus avoiding deterioration in performance. It is fixed to the upper end of the steam jacket heating 3 via the outer frame 41, and connected to the steam pipeline 93 through the right-side inlet 44. Gas in the ground tank 8 is discharged into the expansion pipe 42 for gas expansion, and then discharged into the mixing chamber 43, where it reaches the mixing injection pump and is discharged through the nozzle 45, eliminating the need for manual priming. An injector is installed at the top of the self-priming tank 2, using the pump's minimum return fluid as the working power to extract the secondary gas generated in the self-priming tank 2 and return it to the ground tank 8, where it is discharged through the tank's exhaust system. This prevents the secondary gas from disrupting the vacuum of the inlet pipeline and causing the self-priming pump to fail. In addition, we also provide a steam line for the ejector, which can use steam as working power to draw away the gas in the self-priming tank 2. The sealing device 5 can avoid the high failure rate of the tank pipe, thus avoiding high maintenance costs, and also prevent the leakage of the sealed steam. The pipe 6 is connected through the pipe cavity 54 through the inner cavity of the through frame 51. The upper end of the pipe is sealed by the rubber ring 52, and the lower end of the snap ring 53 encircles the pipe 6 to prevent it from falling off. The leak-proof sealing ring 55 at the bottom can ensure that the pipe 6 will not leak gas during use. Finally, the fixing device 7 can be used for maintenance and inspection of the pipe 6. During testing, the pipe is quickly disassembled to avoid wasting time. The bottom end of the pipe 6 is wrapped around the middle of the fixing sleeve 74, and then fixed to the left side of the ground tank 8 with the connecting fixing bolts 71. The regulating valve 72 is rotated to drive the compression spring 73 to generate pressure, firmly pressing the bottom end of the bolt to the surface of the tank. The nitrogen pressure discharge pipeline device 9 can effectively handle toxic, harmful, flammable, and volatile chemical media gases, thus avoiding the difficulties of the first pump priming. It is connected to the right end of the self-priming tank 2 through the valve port 91, and the dangerous gas is guided to the circulating gas tank 96 through the branch pipeline 97 at the bottom. Then it is guided to the lower pipeline 95 from the gas tank, and then the dangerous gas is sent to the self-priming tank 2 through the transmitter 92 and the steam pipeline 93 via the parallel branch pipe 94 for treatment. The ground tank 8 is connected to a nitrogen pressure discharge pipeline. For situations where the initial pumping of toxic, harmful, flammable, or volatile chemical media is difficult, nitrogen can be introduced into the ground tank 8 to discharge the material in the ground tank 8 into the self-priming tank 2 through the inlet pipeline of the self-priming pump, thus achieving closed-loop pumping and solving safety and environmental protection issues.

[0048] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A continuously self-priming self-venting pump comprising a main body (1), an upper part of which is provided with a self-priming tank (2), characterized in that: The top end of the main body (1) is provided with a steam jacket heating (3), the upper end of the steam jacket heating (3) is provided with a spraying device (4), the lower end of the self-suction tank (2) is provided with a sealing device (5), the middle of the sealing device (5) is provided with a pipeline (6), the bottom end of the pipeline (6) is provided with a fixing device (7), the right end of the fixing device (7) is provided with a ground tank (8), the upper end of the ground tank (8) is provided with a nitrogen pressure exhaust pipeline device (9). The spraying device (4) comprises an outer frame (41), the lower end of the outer frame (41) is movably connected with the upper end of the steam jacket heating (3), the inner cavity of the outer frame (41) is provided with an expansion pipe (42), the lower end of the expansion pipe (42) is provided with a mixing chamber (43), the right end of the mixing chamber (43) is provided with a pipe joint (44), and the lower end of the mixing chamber (43) is provided with a nozzle (45). The sealing device (5) comprises a through frame (51), the upper end of the through frame (51) is movably connected with the bottom end of the self-suction tank (2), the inner cavity of the through frame (51) is provided with a rubber ring (52), the lower end of the rubber ring (52) is provided with a clamping ring (53) on both sides, the middle of the clamping ring (53) is provided with a pipeline cavity (54), and the bottom end of the pipeline cavity (54) is provided with a leak-proof sealing ring (55).

2. A self-priming pump according to claim 1, wherein: The inner cavity surface of the outer frame (41) is fixedly connected with the surface of the expansion pipe (42).

3. A self-priming pump according to claim 2, wherein: The lower end of the mixing chamber (43) is fixedly connected with the surface of the pipe joint (44).

4. A self-priming pump according to claim 1, wherein: The inner cavity surface of the through frame (51) is movably connected with the surface of the rubber ring (52).

5. A self-priming pump according to claim 4, wherein: The lower surface of the pipeline cavity (54) is fixedly connected with the surface of the leak-proof sealing ring (55).

6. A self-priming pump according to claim 1, wherein: The fixing device (7) comprises a fixing bolt (71), the right end of the fixing bolt (71) is movably connected with the surface of the ground tank (8), the left side of the fixing bolt (71) is provided with an adjusting valve (72), the right surface of the fixing bolt (71) is provided with an extrusion spring (73), and the inner side of the fixing bolt (71) is provided with a fixing sleeve plate (74).

7. A self-priming pump according to claim 6, wherein: The left side of the fixing bolt (71) is fixedly connected with the right end of the adjusting valve (72), and the surface of the fixing bolt (71) is movably connected with the surface of the fixing sleeve plate (74).

8. A self-priming pump according to claim 1, wherein: The nitrogen pressure exhaust pipeline device (9) comprises a valve port (91), the left end of the valve port (91) is movably connected with the right side of the self-suction tank (2), the right end of the valve port (91) is provided with a transmitter (92), the upper end of the transmitter (92) is provided with a steam pipeline (93), the right end of the transmitter (92) is provided with a parallel branch pipe (94), the lower end of the parallel branch pipe (94) is provided with a lower pipeline (95), the bottom end of the lower pipeline (95) is provided with a circulating gas tank (96), and the circulating gas tank (96) is provided with a branch pipeline (97) at the bottom end.

9. A self-priming pump according to claim 8, wherein: The right end of the valve port (91) is fixedly connected with the left end of the transmitter (92), and the lower end of the circulating gas tank (96) is fixedly connected with the top end of the branch pipeline (97).

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