Water injection device in self-filling type water pump shell

Abstract

The utility model provides a water injection device in a self-filling water pump shell. The water injection device comprises a pump body, a water outlet valve, a first exhaust valve, a second exhaust valve, a check valve, a water inlet pipe, a water injection pipe and a water outlet pipe. One end of the water inlet pipe is communicated with a water inlet of the pump body, a one-way valve is arranged on the water inlet pipe, and the water injection pipe is communicated with the water inlet pipe. One end of the water outlet pipe is connected with the water outlet of the pump body; the first exhaust valve is arranged on the water outlet pipe and located between the water outlet valve and the pump body. The second exhaust valve is arranged on the water inlet pipe and located between the water injection pipe and the water source. The self-filling water pump empties gas in the water pump through the water injection device to form a negative pressure environment, realizes automatic water diversion, omits a manual water injection step, improves the working efficiency, and is particularly suitable for the working condition of frequent start and stop.

Description

Technical Field

[0001] This disclosure relates to the technical field of water pumps, and in particular to a self-priming water pump casing internal water injection device. Background Technology

[0002] In industrial production processes, water pumps are key equipment for conveying liquid materials. Traditional water pumps require manual water injection into the casing and inlet pipe to purge air before each use, which reduces working efficiency and cannot meet the needs of frequent start-stop operations.

[0003] To address this issue, existing water pumps utilize auxiliary equipment such as vacuum pumps and elevated water tanks instead of manual priming to purge air before startup, ensuring normal operation. However, installing vacuum pumps increases equipment costs and energy consumption, and complicates maintenance; elevated water tanks occupy significant space and require the water level in the tank to be higher than the pump, thus limiting installation and hindering water filling and maintenance.

[0004] In summary, the introduction of auxiliary equipment into existing water pumps increases the complexity of the overall structure and raises maintenance costs. Furthermore, in practical applications, problems such as inconvenient start-up and low efficiency still exist. Utility Model Content

[0005] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a simple self-priming water pump casing internal water injection device.

[0006] The purpose of this disclosure is achieved through the following technical solution:

[0007] A self-priming water pump casing internal water injection device includes: a pump body, a water outlet valve, a first air vent valve, a second air vent valve, a check valve, a water inlet pipe, a water injection pipe, and a water outlet pipe;

[0008] One end of the inlet pipe is connected to the inlet of the pump body, and the other end of the inlet pipe is connected to the water source. A one-way valve is installed on the inlet pipe. The injection pipe is connected to the inlet pipe, and the check valve is installed at the end of the injection pipe near the inlet pipe. One end of the outlet pipe is connected to the outlet of the pump body, and the outlet valve is installed on the outlet pipe.

[0009] The first vent valve is installed on the water outlet pipe and is located between the water outlet valve and the pump body; the second vent valve is installed on the water inlet pipe and is located between the water injection pipe and the water source.

[0010] In one embodiment, the self-priming water pump casing water injection device further includes a water inlet valve, which is disposed at one end of the water inlet pipe near the pump body.

[0011] In one embodiment, the self-priming water pump casing water injection device further includes a liquid injection funnel, which is connected to the water injection pipe.

[0012] In one embodiment, the end of the injection funnel away from the water injection pipe is covered with a dust cover.

[0013] In one embodiment, the injection funnel is detachably connected to the water injection pipe.

[0014] In one embodiment, the pump body is installed at a horizontal level higher than the water source surface, and the vertical drop is less than 10 meters.

[0015] In one embodiment, the self-priming water pump casing water injection device further includes a first vent pipe and a second vent pipe; the first vent pipe is connected to the water outlet pipe, and the first vent valve is installed on the first vent pipe; the second vent pipe is connected to the water inlet pipe, and the second vent valve is installed on the second vent pipe.

[0016] In one embodiment, the first exhaust valve is connected to the first exhaust pipe flange, and the second exhaust valve is connected to the second exhaust pipe flange.

[0017] Compared with the prior art, this disclosure has at least the following advantages:

[0018] 1. The operating steps for the self-priming water pump's internal water filling device are as follows: First, close the outlet valve, then open the first air vent valve, the second air vent valve, and the check valve in sequence. Next, fill the self-priming water pump with water through the filling pipe until water continuously flows from both the first and second air vent valves. Once the air inside the self-priming water pump is completely purged, close the first air vent valve, the second air vent valve, and the check valve in sequence. This completes the first water filling of the self-priming water pump; no further water filling is required upon restarting.

[0019] 2. The water pump uses a self-priming water injection device inside the pump casing to vent the gas inside the pump, creating a negative pressure environment and achieving automatic water priming. This eliminates the need for manual water injection, improves work efficiency, and is especially suitable for operating conditions with frequent start-stop cycles.

[0020] 3. The self-priming water pump casing internal water injection device has a simple structure, requires no auxiliary equipment, reduces installation and maintenance costs, and reduces energy consumption. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the structure of a self-priming water pump casing internal water injection device.

[0023] Figure 2 This is a schematic diagram of the structure of a self-priming water pump casing water injection device. Detailed Implementation

[0024] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0028] Please see Figure 1 and Figure 2This invention relates to a self-priming water pump casing internal water injection device 10, which includes a pump body 100, an outlet valve 200, a first vent valve 300, a second vent valve 400, a check valve 500, an inlet pipe 600, an injection pipe 610, and an outlet pipe 700. One end of the inlet pipe 600 is connected to the inlet of the pump body 100, and a one-way valve 620 is installed on the inlet pipe 600. The injection pipe 610 is connected to the inlet pipe 600, and the check valve 500 is located at one end of the injection pipe 610 near the inlet pipe 600. One end of the outlet pipe 700 is connected to the outlet 102 of the pump body 100, and the outlet valve 200 is installed on the outlet pipe 700. The first vent valve 300 is installed on the outlet pipe 700 and is located between the outlet valve 200 and the pump body 100. The second air vent valve 400 is installed on the water inlet pipe 600 and is located between the water injection pipe 610 and the water source 20.

[0029] The steps for using the self-priming water pump casing internal water injection device 10 are as follows:

[0030] First, close the outlet valve 200, then open the first vent valve 300, the second vent valve 400, and the check valve 500 in sequence. Next, inject water into the pump through the water inlet pipe 610 until water is continuously flowing from both the first vent valve 300 and the second vent valve 400. At this point, the air inside the pump body 100 is completely purged. Then, close the first vent valve 300, the second vent valve 400, and the check valve 500 in sequence. This completes the first priming of the self-priming pump; no further priming is required upon restarting.

[0031] In this embodiment, the self-priming water pump casing internal water injection device 10 vents the gas inside the water pump, creating a negative pressure environment to achieve automatic water priming, eliminating the need for manual water injection and improving work efficiency, especially suitable for operating conditions with frequent start-stop cycles. Furthermore, the self-priming water pump casing internal water injection device 10 has a simple structure, requires no auxiliary equipment, reduces installation and maintenance costs, and decreases energy consumption.

[0032] It should be noted that after water injection is completed, the water injection pipe 610 must always be kept in a liquid-sealed state and the liquid level must always be higher than the check valve 500 to prevent air from entering the water pump.

[0033] like Figure 1 and Figure 2 As shown, in one embodiment, the self-priming water pump casing water injection device 10 further includes an inlet valve 800, which is located at the end of the inlet pipe 600 near the pump body 100. It is understood that by providing the inlet valve 800 at the water inlet 101 of the pump body 100, the pump body 100 and the inlet pipe 600 can be isolated, facilitating the disassembly and maintenance of the pump body 100. Simultaneously, the outlet valve 200 and the inlet valve 800 divide the overall structure into three parts, allowing for separate testing of sealing performance and facilitating maintenance.

[0034] like Figure 1and Figure 2 As shown, in one embodiment, the self-priming water pump casing water injection device 10 further includes an injection funnel 900, which is connected to the water injection pipe 610. It is understood that the injection funnel 900 has a large injection port, facilitating rapid water injection, simplifying the operation process, and improving water injection efficiency.

[0035] It should be noted that in this embodiment, after water injection is completed, the injection funnel 900 remains in a liquid-sealed state to prevent air from entering the water pump.

[0036] like Figure 1 and Figure 2 As shown, in one embodiment, a dust cover 910 is provided at the end of the injection funnel 900 away from the water inlet pipe 600. Specifically, in this embodiment, after the check valve 500 of the water inlet pipe 610 is closed, a liquid seal is formed in the injection funnel 900 to prevent air from entering the water pump. The dust cover 910 can prevent dust and impurities from entering the injection funnel 900, ensuring that the liquid seal water in the injection funnel 900 remains clean, avoiding blockage or corrosion of the water inlet pipe 610, extending the service life of the water injection device 10 inside the self-priming water pump casing, and improving the overall operational stability. In addition, the dust cover 910 is placed on the injection funnel 900, making operation simple.

[0037] like Figure 1 and Figure 2 As shown, in one embodiment, the injection funnel 900 is detachably connected to the water injection pipe 610. Specifically, in this embodiment, the injection funnel 900 is flange-connected to the water injection pipe 610, which allows for quick disassembly, facilitating cleaning and maintenance.

[0038] like Figure 1 and Figure 2 As shown, in one embodiment, the installation plane of the pump body 100 is higher than the liquid level of the water source 20, and the vertical drop is less than 10 meters. It is understood that the water pump, through the self-priming pump casing water injection device 10, expels air from the pump body 100, creating negative pressure to achieve water intake. It does not rely on the weight of the water, therefore a high-level water tank is not required. Self-priming is achieved when the vertical height difference between the liquid level of the water source 20 and the installation plane of the pump body 100 is less than 10 meters, reducing installation costs and improving the applicability and convenience of the water pump. Simultaneously, it facilitates the addition and maintenance of the water source 20.

[0039] It should be noted that the installation position of the pump body 100 is not limited to the bottom of the pump body. For example, in other embodiments, the pump body 100 is installed below the water source 20.

[0040] like Figure 1 and Figure 2As shown, in one embodiment, the self-priming water pump casing internal water injection device 10 further includes a first vent pipe 710 and a second vent pipe 630. The first vent pipe 710 is connected to the outlet pipe 700, and a first vent valve 300 is installed on the first vent pipe 710. The second vent pipe 630 is connected to the inlet pipe 600, and a second vent valve 400 is installed on the second vent pipe 630. Specifically, in this embodiment, the first vent pipe 710 and the second vent pipe 630 extend out of the main pipe, and gas is discharged through independent pipes during the venting process to avoid water flow interference. This also facilitates maintenance and replacement, further improving the working efficiency and reliability of the self-priming water pump casing internal water injection device 10.

[0041] like Figure 1 and Figure 2 As shown, in one embodiment, the first vent valve 300 is flange-connected to the first vent pipe 710, and the second vent valve 400 is flange-connected to the second vent pipe 620. It is understood that flange connections facilitate installation and removal, reducing maintenance difficulty. Simultaneously, flange connections offer better sealing and stability, reducing loosening caused by vibration, preventing leakage at the connection point, ensuring the stable operation of the self-priming water pump casing water injection device 10, and further improving the overall performance of the self-priming water pump casing water injection device 10.

[0042] Compared with the prior art, this disclosure has at least the following advantages:

[0043] 1. The operating steps for the self-priming water pump's internal water filling device are as follows: First, close the outlet valve, then open the first air vent valve, the second air vent valve, and the check valve in sequence. Next, fill the self-priming water pump with water through the filling pipe until water continuously flows from both the first and second air vent valves. Once the air inside the self-priming water pump is completely purged, close the first air vent valve, the second air vent valve, and the check valve in sequence. This completes the first water filling of the self-priming water pump; no further water filling is required upon restarting.

[0044] 2. The water pump uses a self-priming water injection device inside the pump casing to vent the gas inside the pump, creating a negative pressure environment and achieving automatic water priming. This eliminates the need for manual water injection, improves work efficiency, and is especially suitable for operating conditions with frequent start-stop cycles.

[0045] 3. The self-priming water pump casing internal water injection device has a simple structure, requires no auxiliary equipment, reduces installation and maintenance costs, and reduces energy consumption.

[0046] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A self-priming water pump casing internal water injection device, characterized in that, include: Pump body, outlet valve, first air vent valve, second air vent valve, check valve, inlet pipe, injection pipe and outlet pipe; One end of the inlet pipe is connected to the inlet of the pump body, and the other end of the inlet pipe is connected to the water source. A one-way valve is installed on the inlet pipe. The injection pipe is connected to the inlet pipe, and the check valve is installed at the end of the injection pipe near the inlet pipe. One end of the outlet pipe is connected to the outlet of the pump body, and the outlet valve is installed on the outlet pipe. The first vent valve is installed on the water outlet pipe and is located between the water outlet valve and the pump body; the second vent valve is installed on the water inlet pipe and is located between the water injection pipe and the water source.

2. The self-priming water pump casing internal water injection device according to claim 1, characterized in that, The self-priming water pump casing water injection device also includes an inlet valve, which is located at one end of the inlet pipe near the pump body.

3. The self-priming water pump casing internal water injection device according to claim 1, characterized in that, The self-priming water pump casing water injection device also includes a liquid injection funnel, which is connected to the water injection pipe.

4. The self-priming water pump casing internal water injection device according to claim 3, characterized in that, The end of the injection funnel furthest from the water injection pipe is covered with a dust cover.

5. The self-priming water pump casing internal water injection device according to claim 3, characterized in that, The injection funnel is detachably connected to the water injection pipe.

6. The self-priming water pump casing internal water injection device according to claim 1, characterized in that, The pump body is installed at a horizontal level higher than the water source liquid level, and the vertical drop is less than 10 meters.

7. The self-priming water pump casing internal water injection device according to claim 1, characterized in that, The self-priming water pump casing water injection device further includes a first vent pipe and a second vent pipe; the first vent pipe is connected to the water outlet pipe, and the first vent valve is installed on the first vent pipe; the second vent pipe is connected to the water inlet pipe, and the second vent valve is installed on the second vent pipe.

8. The self-priming water pump casing internal water injection device according to claim 7, characterized in that, The first exhaust valve is connected to the first exhaust pipe flange, and the second exhaust valve is connected to the second exhaust pipe flange.

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