Water shortage prevention device for self-priming pump

Abstract

The utility model belongs to the technical field of self-priming pumps, and particularly discloses a water shortage prevention device for a self-priming pump, which comprises the self-priming pump and a water suction pipe connected with the self-priming pump, the water suction pipe comprises a first water suction pipe and a second water suction pipe, the first water suction pipe is transversely arranged, the second water suction pipe is vertically arranged, and the self-priming pump is connected with the second water suction pipe through the first water suction pipe. A bottom valve used for filtering impurities is arranged at the end of the second water suction pipe, an observation pipe is vertically arranged on the water suction pipe, the observation pipe is communicated with the water suction pipe, the observation pipe is higher than the self-priming pump, a control valve used for opening and closing the observation pipe is arranged at the top of the observation pipe, and the observation pipe is made of transparent materials. According to the utility model, the water storage condition in the observation pipe can be intuitively known through the observation pipe, namely, the water storage condition in the water suction pipe can be known, so that the self-priming pump can be started under the condition of water storage, and the condition that the self-priming pump is damaged due to the fact that the self-priming pump is started under the condition of water shortage is avoided; in addition, water can be rapidly injected into the self-priming pump.

Description

TECHNICAL FIELD

[0001] The utility model relates to a self-priming pump technical field especially a kind of water shortage prevention device for self-priming pump. BACKGROUND

[0002] The working principle of self-priming pump is to use the negative pressure inside the pump body to make liquid be pumped into the pump body, and then the liquid is delivered to high place by centrifugal force inside the pump body.

[0003] REFERENCE Figure 1 The prior art self-priming pump system comprises a self-priming pump (1) and a water suction pipe (2) connected with the self-priming pump (1), the water suction pipe (2) comprises a first water suction pipe (201) arranged transversely and a second water suction pipe (202) arranged vertically, the self-priming pump (1) is connected with the second water suction pipe (202) through the first water suction pipe (201), and the end of the second water suction pipe (202) is provided with a bottom valve (3) for filtering impurities. The bottom valve (3) can keep the water suction pipe in a full water state while preventing large particles from entering the pipeline. If the bottom valve works normally, the self-priming pump needs to be manually filled with water only when it is first used, and it can operate normally almost without manual filling with water in the later period.

[0004] However, if the valve core of the bottom valve is blocked by foreign matters sucked in and cannot be reset in time or the water suction pipe is not tightly sealed, the water in the water suction pipe will flow back and be lost after the self-priming pump is stopped. Before the self-priming pump is started again, the water storage condition of the water suction pipe cannot be directly observed, and if the water shortage in the water suction pipe is not found and water supplement measures are not taken before the self-priming pump is started again, the self-priming pump will run with water shortage, and if it runs with water shortage for a long time, the self-priming pump will be easily damaged. INVENTION CONTENTS

[0005] In view of the technical problem that the prior art self-priming pump system cannot directly understand the water storage condition in the water suction pipe, the self-priming pump runs with water shortage and is damaged, the utility model provides a water shortage prevention device for self-priming pump.

[0006] The technical scheme adopted by the utility model is as follows: a water shortage prevention device for self-priming pump, comprising a self-priming pump and a water suction pipe connected with the self-priming pump, the water suction pipe comprises a first water suction pipe arranged transversely and a second water suction pipe arranged vertically, the self-priming pump is connected with the second water suction pipe through the first water suction pipe, the end of the second water suction pipe is provided with a bottom valve for filtering impurities, an observation pipe is vertically arranged on the water suction pipe, the observation pipe communicates with the water suction pipe, the observation pipe is higher than the self-priming pump, a control valve for opening and closing the observation pipe is arranged at the top of the observation pipe, and the observation pipe is made of transparent material.

[0007] Further, the observation pipe is arranged at the connection between the first water suction pipe and the second water suction pipe.

[0008] Further, the observation tube is arranged in the extension direction of the second water suction pipe, and the observation tube is coaxially arranged with the second water suction pipe.

[0009] Further, the observation tube is connected with the water suction pipe through a flange.

[0010] Further, the observation tube is made of transparent acrylic.

[0011] Further, the control valve is a manual valve.

[0012] Further, the control valve is a manual ball valve.

[0013] Further, the control valve is a manual UPVC ball valve.

[0014] Further, the flange is a UPVC socket flange.

[0015] Further, the control valve, the observation tube and the flange are connected through adhesive.

[0016] The beneficial effects of the present application are: the present application can intuitively understand the water storage condition in the observation tube, and thus the water storage condition in the water suction pipe is known, so that the self-priming pump can be started under the condition of water storage, and the damage of the self-priming pump caused by starting the self-priming pump under the condition of water shortage can be avoided; in addition, the present application can also realize rapid priming operation for the self-priming pump. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic diagram of a prior art self-priming pump system.

[0018] Figure 2 is a structural schematic diagram of the present application.

[0019] In the drawings, the following are marked:

[0020] 1, self-priming pump;

[0021] 2, water suction pipe; 201, first water suction pipe; 202, second water suction pipe;

[0022] 3, bottom valve; 4, observation tube; 5, control valve; 6, flange. DETAILED DESCRIPTION

[0023] In the description of the present application, it should be pointed out that the terms "front", "upper", "lower", "left", "right", "vertical", "horizontal" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0024] In the description of the utility model, it is explained that, unless otherwise explicitly provided and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, and can be detachable connection, or integrally connected, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements, for the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0025] The following will be described in detail with reference to the accompanying drawings Figure 2 The utility model is further explained.

[0026] Embodiment

[0027] In view of the technical problems in the background art, the utility model provides a water shortage prevention device for self-priming pump.

[0028] In the specific technical scheme, referring to Figure 2 The water shortage prevention device for self-priming pump comprises a self-priming pump 1 and a water suction pipe 2 connected with the self-priming pump 1, the water suction pipe 2 comprises a first water suction pipe 201 arranged horizontally and a second water suction pipe 202 arranged vertically, the self-priming pump 1 is connected with the second water suction pipe 202 through the first water suction pipe 201, and the end of the second water suction pipe 202 is provided with a bottom valve 3 for filtering impurities.

[0029] The above structure is the same as the structure of the prior art self-priming pump system, and the technical problem that the water storage condition in the water suction pipe cannot be intuitively understood, the self-priming pump runs out of water and is damaged cannot be solved. Therefore, in order to solve the above technical problems, the utility model is further improved as follows: referring to Figure 2 In the embodiment, an observation pipe 4 is vertically arranged on the water suction pipe 2, the observation pipe 4 is communicated with the water suction pipe 2, the observation pipe 4 is higher than the self-priming pump 1, a control valve 5 for opening and closing the observation pipe 4 is arranged at the top of the observation pipe 4, and the observation pipe 4 is made of transparent acrylic.

[0030] Working principle: before starting the self-priming pump 1, first open the control valve 5, then fill the water in the observation tube 4, then close the control valve 5, finally start the self-priming pump 1, the water in the pump cavity is pumped away, and the continuous negative pressure is automatically formed in the suction pipe 2, the self-priming pump 1 obtains continuous water suction capacity, and the self-priming pump 1 continuously runs, the suction pipe 2 is continuously filled with water, and the liquid level of the observation tube 4 does not change. Similarly, after the self-priming pump 1 is normally stopped, the weight of the water stored in the suction pipe 2 will make the valve core of the bottom valve 3 at the bottom of the suction pipe 2 automatically reset, the water storage amount in the suction pipe 2 does not change, the liquid level in the observation tube 4 also does not change, and the self-priming pump 1 can be directly started again. If the liquid level cannot be observed through the observation tube 4 before the self-priming pump 1 is started, the self-priming pump 1 needs to be temporarily started, and the water filling operation can be performed through the observation tube 4 first. If the observation tube 4 cannot be filled with water, it can be confirmed that the bottom valve 3 of the suction pipe 2 or the suction pipe 2 has a water leakage, and the water filling operation needs to be performed after the water leakage of the bottom valve 3 of the suction pipe or the suction pipe 2 is checked and treated. After the water filling operation is normal, the self-priming pump 1 can be started.

[0031] It can be seen that through the above improvement, the operator can directly understand the water storage condition in the observation tube, that is, the water storage condition in the suction pipe, so that the self-priming pump can be started under the condition of water storage, and the damage of the self-priming pump caused by starting the self-priming pump under the condition of water shortage can be avoided. In addition, the self-priming pump can also be quickly filled with water.

[0032] In order to facilitate installation, the observation tube 4 is arranged at the connection between the first suction pipe 201 and the second suction pipe 202. Moreover, the observation tube 4 is arranged in the extension direction of the second suction pipe, and the observation tube and the second suction pipe 202 are coaxially arranged, so that the original equipment can be conveniently improved, and only a tee needs to be added at the connection between the first suction pipe 201 and the second suction pipe 202.

[0033] In order to ensure the stability of the connection between the observation tube 4 and the suction pipe 2 and facilitate disassembly and assembly of the observation tube 4, the observation tube 4 is designed to be connected with the suction pipe 2 through the flange 6.

[0034] Actually, the control valve 5 is not used frequently, so the control valve 5 is a manual UPVC ball valve, and the flange 6 is also a UPVC socket flange. The UPVC material has the advantages of light weight, corrosion resistance and oxidation resistance, and also makes the opening and closing operation of the control valve more convenient.

[0035] The control valve 5, the observation tube 4 and the flange 6 of the embodiment are connected through adhesive, and the assembly process is simple and reliable.

[0036] The above specific embodiments explain the purpose, technical scheme and beneficial effects of the present application in further detail, and it should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A water shortage prevention device for a self-priming pump, comprising a self-priming pump (1) and a water suction pipe (2) connected with the self-priming pump (1), the water suction pipe (2) comprising a first water suction pipe (201) arranged transversely and a second water suction pipe (202) arranged vertically, the self-priming pump (1) being connected with the second water suction pipe (202) through the first water suction pipe (201), and an end of the second water suction pipe (202) being provided with a bottom valve (3) for filtering impurities, characterized in that, The water suction pipe (2) is vertically provided with an observation pipe (4) in communication with the water suction pipe (2), the observation pipe (4) is higher than the self-suction pump (1), the top of the observation pipe (4) is provided with a control valve (5) for opening and closing the observation pipe (4), and the observation pipe (4) is made of transparent material.

2. The low water level preventing device for a self-priming pump according to claim 1, wherein The observation pipe (4) is arranged at the connection of the first water suction pipe (201) and the second water suction pipe (202).

3. The low water cut prevention device for a self-priming pump according to claim 2, wherein The observation pipe (4) is arranged in the extension direction of the second water suction pipe, and the observation pipe is coaxially arranged with the second water suction pipe (202).

4. The low water level preventing device for a self-priming pump according to claim 3, wherein The observation pipe (4) is connected with the water suction pipe (2) through a flange (6).

5. The low water level preventing device for a self-priming pump according to claim 1, wherein The observation pipe (4) is made of transparent acrylic.

6. The low water level preventing device for a self-priming pump according to claim 1, wherein The control valve (5) is a manual valve.

7. The low water condition preventing device for a self-priming pump according to claim 6, wherein The control valve (5) is a manual ball valve.

8. The low water condition preventing device for a self-priming pump according to claim 7, wherein The control valve (5) is a manual UPVC ball valve.

9. The low water level preventing device for a self-priming pump according to claim 4, wherein The flange (6) is a UPVC socket flange.

10. The low water condition preventing device for a self-priming pump according to claim 9, wherein The control valve (5), the observation pipe (4) and the flange (6) are connected through adhesive.

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