Multi-stage non-sealing self-priming pump

Abstract

The utility model discloses a multistage sealing-free self-priming pump which comprises a pump body, an injection pipe is fixedly arranged on one side of the pump body in an embedded mode, a discharge pipe is fixedly arranged on one side of the pump body in an embedded mode, a bent pipe is fixedly arranged at the top end of the discharge pipe, and a first electromagnetic valve is fixedly arranged at the top end of the pump body in an embedded mode. A fixing pipe is fixedly arranged at the top end of the first electromagnetic valve, a storage tank is fixedly arranged at the top end of the fixing pipe, and the top end of the storage tank is sleeved with a sealing cover through threads. When the first extension switch starts the pump body and starts the second delay switch at the same time, the second electromagnetic valve is closed after a period of time, in this way, when liquid pumped out of the pump body passes through the position of the bent pipe, part of liquid is injected into the storage tank through the connecting pipe till the second electromagnetic valve is closed, and therefore liquid is supplemented into the storage tank; and therefore, manual liquid supplementing work is not needed during subsequent use, and the use of the device is greatly facilitated.

Description

Technical Field

[0001] This utility model relates to the field of self-priming pumps, specifically a multi-stage sealless self-priming pump. Background Technology

[0002] A self-priming pump is a centrifugal pump with a self-priming function. It can automatically remove gas from the suction line when starting up, allowing liquid to smoothly enter the pump and complete the delivery.

[0003] When using a self-priming pump, it is sometimes necessary to add some water to the pump body to help the pump body quickly start pumping. However, the liquid injection is done manually, which is quite troublesome. In addition, when changing the position and using it again, the liquid injection work needs to be done again. Such repeated operation is time-consuming and laborious. Therefore, there is an urgent need for a device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a multi-stage sealless self-priming pump to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage seal-free self-priming pump, comprising a pump body, an injection pipe fixedly mounted on one side of the pump body, a discharge pipe fixedly mounted on one side of the pump body, a bend fixedly mounted at the top of the discharge pipe, a first solenoid valve fixedly mounted at the top of the pump body, a fixing pipe fixedly mounted at the top of the first solenoid valve, a storage tank fixedly mounted at the top of the fixing pipe, a sealing cap threadedly mounted at the top of the storage tank, a one-way valve fixedly mounted at the top of the sealing cap, a liquid replenishment mechanism between the bend and the storage tank, and a... The fixed block has a first control switch and a second control switch embedded and fixedly installed at its top. A first delay switch and a second delay switch are also embedded and fixedly installed inside the fixed block. In use, liquid is injected into the storage tank, and then the sealing cap is fixed to the top of the storage tank. The first control switch is then activated, causing the first solenoid valve to start, and liquid is injected into the pump body for replenishment. Simultaneously, the first control switch activates the first delay switch until the first extension switch starts the pump body and closes the first solenoid valve, bringing the pump body to normal operating status. After completing the operation, the pump body can be turned off via the second control switch, eliminating the need for manual replenishment.

[0006] Preferably, the liquid replenishment mechanism includes a connecting pipe and a second solenoid valve. The connecting pipe is fixed to one side of the bend, and the second solenoid valve is embedded and fixed to one side of the storage tank. When the first extension switch starts the pump body, the second delay switch is also activated, causing the second solenoid valve to close after a period of time. Thus, when the liquid pumped by the pump body passes through the bend, some of the liquid is injected into the storage tank through the connecting pipe until the second solenoid valve closes, thereby replenishing the liquid inside the storage tank. This eliminates the need for manual liquid replenishment during subsequent use, greatly facilitating the use of the device.

[0007] Preferably, the first control switch is electrically connected to the first solenoid valve, and the second control switch is electrically connected to the pump body.

[0008] Preferably, the first delay switch is electrically connected to the pump body, the first control switch, and the first solenoid valve.

[0009] Preferably, one side of the second solenoid valve is fixed to one side of the connecting pipe.

[0010] Preferably, the second delay switch is electrically connected to the second solenoid valve and the first delay switch, and the second control switch is electrically connected to the second solenoid valve to facilitate opening the second solenoid valve.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. In use, the liquid is injected into the storage tank, and then the sealing cap is fixed to the top of the storage tank. Then, the first control switch is activated, which activates the first solenoid valve. The liquid is then injected into the pump body for replenishment. At the same time, the first control switch activates the first delay switch until the first extension switch activates the pump body and closes the first solenoid valve, so that the pump body is in normal working condition. After the work is completed, the pump body can be turned off by the second control switch. No manual replenishment is required.

[0013] 2. When the first extension switch starts the pump body, the second delay switch is also activated, causing the second solenoid valve to close after a period of time. As a result, when the liquid pumped out by the pump body passes through the bend in the pipe, some of the liquid is injected into the storage tank through the connecting pipe until the second solenoid valve closes, thereby replenishing the liquid inside the storage tank. This eliminates the need for manual replenishment during subsequent use, greatly facilitating the use of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a multi-stage seal-free self-priming pump according to the present invention;

[0015] Figure 2 This is a first side view of a multi-stage sealless self-priming pump according to the present invention;

[0016] Figure 3This is a second side view of a multi-stage sealless self-priming pump according to the present invention.

[0017] In the diagram: 1. Pump body; 2. Injection pipe; 3. Discharge pipe; 4. Bend; 5. Fixing block; 6. First delay switch; 7. Second delay switch; 8. First control switch; 9. Second control switch; 10. First solenoid valve; 11. Fixing pipe; 12. Storage tank; 13. Sealing cap; 14. Check valve; 15. Connecting pipe; 16. Second solenoid valve. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-3 This utility model provides a multi-stage seal-free self-priming pump, including a pump body 1, an injection pipe 2 and a discharge pipe 3 fixedly embedded on one side of the pump body 1, a bend 4 fixed to the top of the discharge pipe 3 via a flange, a first solenoid valve 10 fixedly embedded at the top of the pump body 1, a fixing pipe 11 fixed to the top of the first solenoid valve 10 via a connecting valve, a storage tank 12 welded to the top of the fixing pipe 11, a sealing cap 13 threadedly connected to the top of the storage tank 12, a one-way valve 14 fixedly embedded at the top of the sealing cap 13, a liquid replenishment mechanism between the bend 4 and the storage tank 12, a fixing block 5 fixedly embedded at the top of the pump body 1, a first control switch 8 and a second control switch 9 fixedly embedded at the top of the fixing block 5, the first control switch 8 and the first solenoid valve 10 being electrically connected. The second control switch 9 is electrically connected to the pump body 1. The first delay switch 6 and the second delay switch 7 are embedded and fixed inside the fixing block 5. The first delay switch 6 is electrically connected to the pump body 1, the first control switch 8, and the first solenoid valve 10. In use, liquid is injected into the storage tank 12, and then the sealing cap 13 is fixed to the top of the storage tank 12. Then, the first control switch 8 is activated, which activates the first solenoid valve 10. Liquid is then injected into the pump body 1 for replenishment. At the same time, the first control switch 8 activates the first delay switch 6 until the first extension switch 6 activates the pump body 1 and closes the first solenoid valve 10, so that the pump body 1 is in normal working condition. After the work is completed, the pump body 1 can be turned off by the second control switch 9. No manual replenishment is required.

[0020] The liquid replenishment mechanism includes a connecting pipe 15 and a second solenoid valve 16. The connecting pipe 15 is fixed to one side of the bend 4 via the connecting valve. The second solenoid valve 16 is embedded and fixed to one side of the storage tank 12. One side of the second solenoid valve 16 is fixed to one side of the connecting pipe 15 via the connecting valve. The second delay switch 7 is electrically connected to the second solenoid valve 16 and the first delay switch 6. The second control switch 9 is electrically connected to the second solenoid valve 16 to facilitate opening the second solenoid valve 16. When the first extension switch 6 starts the pump body 1, the second delay switch 7 is also started, causing the second solenoid valve 16 to close after a period of time. Thus, when the liquid pumped out by the pump body 1 passes through the bend 4, some of the liquid is injected into the storage tank 12 through the connecting pipe 15 until the second solenoid valve 16 closes, thereby replenishing the liquid inside the storage tank 12. This eliminates the need for manual liquid replenishment during subsequent use, greatly simplifying the use of the device.

[0021] Working principle: During use, liquid is injected into the storage tank 12, and then the sealing cap 13 is fixed to the top of the storage tank 12. Then, the first control switch 8 is activated, which activates the first solenoid valve 10, and then liquid is injected into the pump body 1 for replenishment. At the same time, the first control switch 8 activates the first delay switch 6 until the first extension switch 6 activates the pump body 1 and closes the first solenoid valve 10, so that the pump body 1 is in normal working condition. After the work is completed, the pump body 1 can be closed by the second control switch 9, without the need for manual replenishment. When the first extension switch 6 activates the pump body 1 and the second delay switch 7 is activated, the second solenoid valve 16 closes after a period of time. In this way, when the liquid pumped out by the pump body 1 passes through the bend 4, some of the liquid is injected into the storage tank 12 through the connecting pipe 15 until the second solenoid valve 16 closes, thereby replenishing the liquid inside the storage tank 12. This eliminates the need for manual replenishment during subsequent use, greatly simplifying the use of the device.

[0022] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage seal-free self-priming pump, comprising a pump body (1), characterized in that: An injection pipe (2) is embedded and fixedly installed on one side of the pump body (1), and a discharge pipe (3) is embedded and fixedly installed on one side of the pump body (1). A bend pipe (4) is fixedly installed at the top of the discharge pipe (3). A first solenoid valve (10) is embedded and fixedly installed at the top of the pump body (1). A fixing pipe (11) is fixedly installed at the top of the first solenoid valve (10). A storage tank (12) is fixedly installed at the top of the fixing pipe (11). A sealing cap (13) is threadedly connected to the top of the storage tank (12). A one-way valve (14) is embedded and fixedly installed at the top of the sealing cap (13). A liquid replenishment mechanism is provided between the bend pipe (4) and the storage tank (12). A fixing block (5) is embedded and fixedly installed at the top of the pump body (1). A first control switch (8) and a second control switch (9) are embedded and fixedly installed at the top of the fixing block (5). A first delay switch (6) and a second delay switch (7) are embedded and fixedly installed inside the fixing block (5).

2. The multi-stage seal-less self-priming pump according to claim 1, characterized in that: The replenishment mechanism includes a connecting pipe (15) and a second solenoid valve (16). The connecting pipe (15) is fixed on one side of the bend (4), and the second solenoid valve (16) is embedded and fixed on one side of the storage tank (12).

3. A multi-stage seal-less self-priming pump according to claim 2, characterized in that: The first control switch (8) is electrically connected to the first solenoid valve (10), and the second control switch (9) is electrically connected to the pump body (1).

4. A multi-stage seal-less self-priming pump according to claim 3, characterized in that: The first delay switch (6) is electrically connected to the pump body (1), the first control switch (8), and the first solenoid valve (10).

5. A multi-stage seal-less self-priming pump according to claim 4, characterized in that: The second solenoid valve (16) is fixed on one side of the connecting pipe (15).

6. A multi-stage seal-less self-priming pump according to claim 5, characterized in that: The second delay switch (7) is electrically connected to the second solenoid valve (16) and the first delay switch (6), and the second control switch (9) is electrically connected to the second solenoid valve (16).

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