Unpowered automatic pump filling device

Abstract

The utility model relates to an unpowered automatic pump filling device. A liquid level meter is mounted on the liquid storage tank; a liquid inlet pipe is arranged between the bottom of the self-guiding tank and the centrifugal pump, a liquid outlet pipe is arranged at the outlet end of the centrifugal pump, and a backflow pipe is further arranged between the liquid outlet pipe and the self-guiding tank in parallel. The automatic exhausting and pump filling functions under the unpowered condition can be achieved through linkage cooperation of the self-guiding tank, the guide pipe, the floating ball and the limiting plate of the device, when the liquid level of the self-guiding tank rises, the floating ball can rise along with the rising of the liquid level, at the moment, gas in the guide pipe can be naturally exhausted through the exhaust pipe, and the self-guiding tank is protected. And gas in the self-guiding tank can be exhausted through the vent hole, the opening and the exhaust pipe in sequence, and during the period, fluid flows into the liquid inlet pipe through the return pipe and fills the outlet end of the centrifugal pump, so that the inlet end and the outlet end of the centrifugal pump are ensured to be completely filled with the liquid, manual operation is not needed, and the working efficiency and the safety are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic equipment technology, specifically to a non-powered automatic priming pump device. Background Technology

[0002] Priming is a crucial operation that must be performed before starting a centrifugal pump. During this process, it is essential to ensure that the pump body and suction line are completely filled with liquid and to thoroughly purge the air from the pump body. Only in this way can the centrifugal pump start and operate normally. This is the commonly referred to priming process.

[0003] If a priming operation is not performed when starting a centrifugal pump, air may remain inside the pump. Since the density of air is much lower than that of liquid, the centrifugal force generated when the pump starts running will be very small. In this case, the vacuum that can be formed at the suction port will be at a low level, and the discharge pressure will be very low. This results in a pressure difference between the inlet and outlet that is too small. Such a small pressure difference is insufficient to draw liquid into the pump, thus preventing the centrifugal pump from operating normally.

[0004] By priming the pump with liquid, a sealed environment can be created inside the pump. When the pump starts and draws out liquid, a certain degree of vacuum will be generated at the center of the impeller. Under this vacuum environment, the external liquid will be forced into the pump inlet by atmospheric pressure due to the pressure difference between the inside and outside, thus successfully completing the liquid suction action and ensuring the normal operation of the centrifugal pump. However, priming is required every time the pump is started, which increases the workload. By adding an automatic priming device, the pump can be started and stopped remotely and automatically controlled without the need for on-site personnel. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a non-powered automatic priming pump device that automatically vents air and automatically primes, addressing the shortcomings of existing technologies.

[0006] The technical problem to be solved by this utility model is achieved through the following technical solution: a non-powered automatic irrigation pump device, which includes;

[0007] A liquid storage tank, on which a level gauge is installed;

[0008] The self-priming tank is located next to the storage tank. A connecting pipe is installed between the self-priming tank and the storage tank, and a valve body is installed on the connecting pipe.

[0009] The conduit is vertically installed in the self-inducing tank, the bottom of the conduit has a through hole in communication with the inside of the self-inducing tank, a float ball is installed in the conduit, a limiting plate is fixedly installed on the inner wall of the top of the conduit, the middle of the limiting plate has an opening capable of abutting against the float ball, an exhaust pipe is arranged above the opening, one end of the exhaust pipe extends to outside of the self-inducing tank and the other end is communicated with the top of the exhaust pipe, and a vent hole in communication with the inside of the self-inducing tank is further arranged on the side wall of the conduit below the limiting plate.

[0010] The centrifugal pump is arranged at the side of the self-inducing tank, a liquid inlet pipe is arranged between the bottom of the self-inducing tank and the centrifugal pump, a liquid outlet pipe is arranged at the outlet end of the centrifugal pump, and a reflux pipe is further arranged in parallel between the liquid outlet pipe and the self-inducing tank.

[0011] The technical problems to be solved by the utility model can also be solved by the following technical solutions, the inlet end of the connecting pipe extends to the bottom of the liquid storage tank, and the outlet end of the connecting pipe extends to the bottom of the self-inducing tank.

[0012] The technical problems to be solved by the utility model can also be solved by the following technical solutions, the outlet end of the reflux pipe is lower than the height of the vent hole.

[0013] The technical problems to be solved by the utility model can also be solved by the following technical solutions, the valve body is a check valve.

[0014] The technical problems to be solved by the utility model can also be solved by the following technical solutions, the liquid level meter is a remote liquid level meter, and the remote liquid level meter is connected with the start-stop interlocking of the centrifugal pump.

[0015] Compared with the prior art, the utility model has the beneficial technical effects that:

[0016] (1) the linkage cooperation of the self-inducing tank, the conduit, the float ball and the limiting plate of the device can realize the automatic exhaust and pump filling functions under the condition of no power, when the liquid level of the self-inducing tank rises, the float ball rises along with the rising of the liquid level, at this time, the gas in the conduit is naturally exhausted through the exhaust pipe, and the gas in the self-inducing tank is sequentially exhausted through the vent hole, the opening and the exhaust pipe, during which, the fluid flows to the liquid inlet pipe through the reflux pipe and fills the outlet end of the centrifugal pump, so that the inlet end and the outlet end of the centrifugal pump are completely filled with liquid, manual operation is not needed, and the working efficiency and safety are greatly improved.

[0017] (2) Because the automatic priming pump device ensures that the inlet end and the outlet end of the pump body are free of air residues, the centrifugal pump can immediately form sufficient vacuum degree when starting, thereby successfully sucking liquid and generating sufficient discharge pressure, avoiding the problems of difficult starting and unstable operation caused by air residues, and improving the working efficiency and stability of the centrifugal pump;

[0018] (3) Compared with the traditional priming pump operation, the traditional priming pump needs to be manually operated on site, which increases the operation strength and labor cost, while the unpowered automatic priming pump device of the utility model realizes remote pump starting and stopping and automatic control through automatic design, without the need for frequent operation of on-site personnel, thereby reducing the labor intensity and improving the working efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The pipeline connection diagram of the utility model.

[0020] Mark: 1, liquid storage tank; 2, liquid level meter; 3, self-induction tank; 4, connecting pipe; 5, valve body; 6, guide pipe; 7, floating ball; 8, limit plate; 9, exhaust pipe; 10, air hole; 11, centrifugal pump; 12, liquid inlet pipe; 13, liquid outlet pipe; 14, return pipe. DETAILED DESCRIPTION

[0021] The specific technical scheme of the utility model is further described below with reference to the drawings, so that those skilled in the art can further understand the utility model without limiting its rights.

[0022] Example 1, refer to Figure 1 An unpowered automatic priming pump device, comprising;

[0023] The liquid storage tank 1 is provided with a liquid level meter 2, and the liquid level meter 2 is a remote liquid level meter 2 connected with the start-stop interlocking of the centrifugal pump;

[0024] The self-induction tank 3 is arranged beside the liquid storage tank 1, and a connecting pipe 4 is arranged between the self-induction tank 3 and the liquid storage tank 1, the inlet end of the connecting pipe 4 extends to the bottom of the liquid storage tank 1, the outlet end of the connecting pipe 4 extends to the bottom of the self-induction tank 3, a valve body 5 is arranged on the connecting pipe 4, and the valve body 5 is a check valve;

[0025] The guide pipe 6 is vertically arranged in the self-induction tank 3, the bottom of the guide pipe 6 is provided with a through hole communicating with the inside of the self-induction tank 3, a floating ball 7 is arranged in the guide pipe 6, a limit plate 8 is fixedly arranged on the top inner wall of the guide pipe 6 and is formed in a substantially square plate structure, the middle part of the limit plate 8 is provided with an opening capable of abutting against the floating ball 7, an exhaust pipe 9 is arranged above the opening, one end of the exhaust pipe 9 extends out of the self-induction tank 3 and the other end communicates with the top of the exhaust pipe 9, and an air hole 10 communicating with the inside of the self-induction tank 3 is further arranged on the side wall of the guide pipe 6 below the limit plate 8.

[0026] In addition, in order to make the bottom wall of the conduit 6 hold up the floating ball 7 when the liquid level in the self-induction tank 3 is low, so as to avoid the floating ball 7 from being separated from the conduit 6, a square plate-shaped protrusion is fixed on the bottom wall of the conduit 6, which abuts against the bottom of the floating ball 7;

[0027] The centrifugal pump 11 is arranged beside the self-induction tank 3, and the liquid inlet pipe 12 is arranged between the bottom of the self-induction tank 3 and the centrifugal pump 11. The liquid outlet pipe 13 is arranged at the outlet end of the centrifugal pump 11, and the backflow pipe 14 is arranged in parallel between the liquid outlet pipe 13 and the self-induction tank 3, and the outlet end of the backflow pipe 14 is lower than the height of the air vent hole 10.

[0028] The working principle of the automatic pumping device without power is as follows: when there is no liquid or the liquid level in the self-induction tank 3 is low, the fluid in the liquid outlet pipe 13 of the centrifugal pump 11 enters the self-induction tank 3 through the backflow pipe 14; when the liquid level in the self-induction tank 3 rises, the floating ball 7 rises with the rising of the liquid level, at this time, the gas in the conduit 6 is naturally discharged through the exhaust pipe 9, and the gas in the self-induction tank 3 is sequentially discharged through the air vent hole 10, the opening and the exhaust pipe 9, during which, the fluid flows to the liquid inlet pipe 12 through the backflow pipe 14, and fills the outlet end of the centrifugal pump 11, so as to ensure that the inlet end and the outlet end of the centrifugal pump 11 are completely filled with liquid, without manual operation, which greatly improves the working efficiency and safety;

[0029] In addition, because the check valve is installed between the liquid storage tank 1 and the self-induction tank 3, the liquid in the self-induction tank 3 can be effectively prevented from flowing back to the liquid storage tank 1, and the value of the remote liquid level meter 2 installed on the liquid storage tank 1 is connected with the start and stop of the centrifugal pump 11, and the specific value can be customized according to different specifications and models of the liquid storage tank 1, so as to realize continuous automatic control, for example, when the liquid level in the liquid storage tank 1 is too low, the pump body is closed.

Claims

1. A non-powered automatic priming pump device, characterized in that: It includes; A liquid storage tank, on which a liquid level gauge is installed; A self-induction tank, which is arranged beside the liquid storage tank, a connecting pipe is installed between the self-induction tank and the liquid storage tank, and a valve body is installed on the connecting pipe; A guide pipe, which is vertically installed in the self-induction tank, the bottom of the guide pipe has a through hole, which is in communication with the inside of the self-induction tank, a float ball is installed in the guide pipe, a limiting plate is fixedly installed on the inner wall of the top of the guide pipe, the middle of the limiting plate has an opening, which can abut against the float ball, an exhaust pipe is arranged above the opening, one end of the exhaust pipe extends to the outside of the self-induction tank, and the other end is connected to the top of the exhaust pipe, and a vent hole, which is in communication with the inside of the self-induction tank, is also arranged on the side wall of the guide pipe below the limiting plate; A centrifugal pump, which is arranged beside the self-induction tank, a liquid inlet pipe is arranged between the bottom of the self-induction tank and the centrifugal pump, a liquid outlet pipe is arranged at the outlet end of the centrifugal pump, and a backflow pipe is also arranged in parallel between the liquid outlet pipe and the self-induction tank.

2. A self-priming pump assembly according to claim 1, wherein: The inlet end of the connecting pipe extends to the bottom of the liquid storage tank, and the outlet end of the connecting pipe extends to the bottom of the self-induction tank.

3. A self-priming pump assembly according to claim 1, wherein: The outlet end of the backflow pipe is lower than the height of the vent hole.

4. A self-priming pump assembly according to claim 1, wherein: The valve body is a check valve.

5. A self-priming pump assembly according to claim 1, wherein: The liquid level gauge is a remote liquid level gauge, which is connected with the start-stop interlocking of the centrifugal pump.

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