CN203362645U - Self-priming water pump negative-pressure vacuum water-taking device - Google Patents

Abstract

The utility model relates to the field of self-suction water intake, in particular to a water pump water intake device. A self-priming pump negative pressure vacuum water intake device, including a self-priming pump, a suction pipe, a filter and an air control valve, the water inlet of the suction pipe is equipped with a grille, and the filter is connected to the ground part of the suction pipe , the water inlet of the filter is connected with the water outlet of the suction pipe, and the water outlet of the suction pipe is connected with the water inlet of the self-priming pump; the filter is equipped with a filter screen, and the bottom of the filter is opened with a sewage outlet connected with the sewage pipe. A recoil cleaning pipe is connected to the top, and the air control valve is installed on the air inlet on the top of the filter. The utility model no longer needs to clean the pool for maintenance, and the sundries in the pool can be sucked into the filter for removal, and the discharge pipe can realize simple cleaning operation, which reduces the energy consumption of water delivery, and the water delivery flow is significantly increased, and the water flow is controlled by water pressure. The air control valve is more reliable and durable than the solenoid valve, and the manual forced function is convenient for on-site debugging and fault diagnosis.

Description

Self-priming pump negative pressure vacuum water intake device

technical field

The utility model relates to the field of self-priming water intake, in particular to a water pump water intake device.

Background technique

As shown in Figure 1, the existing self-priming pump 103 is a kind of self-priming pump that utilizes its own impeller 108 to vacuumize, forming a continuous negative pressure in the suction pipe 106, and the water 102 in the lower pool 101 is sucked into the pump through the suction pipe 106. The water pump that continuously sends water is formed behind the cavity 109, and its feature is that it does not need additional vacuum equipment, has the advantages of deep suction, reliable sealing, easy installation and use, and strong corrosion resistance.

Suction pipe 106 is a section of closed pipeline, which extends downwards and is installed. Self-priming pump 103 can suck up the water at a depth of 8.5 meters, and a filter screen 105 is provided at the suction port. When the pump is turned on, the solenoid valve 107 closes the bypass port. As the negative pressure increases, the water 102 is sucked into the pump chamber 109 a little bit. When the pump is stopped, the solenoid valve 107 opens the bypass port, and the suction pipe 106 communicates with the atmosphere. , under the action of gravity, the water in the suction pipe 106 falls downwards. Since the suction pipe 106 communicates with the atmosphere, the water in the pump chamber 109 will not flow back to the pool 102 due to the siphon principle, otherwise the water in the pump chamber 109 will Without water, the impeller 108 cannot achieve the function of vacuuming.

There are following problems in existing suction pipe 106:

1. The straight and flat suction pipe has a large kinetic energy loss.

2. The sundries 104 are easy to block the inlet filter screen 105, causing the suction port to be blocked. The filter screen 105 at the bottom of the suction pipe 106 must be cleared if it needs to be cleaned and replaced, and the operation is difficult.

3. The solenoid valve 107 is easy to be tightly sealed, which makes vacuuming difficult, and the vacuum degree in the pipeline cannot be observed, and the solenoid valve 107 has no manual operation function, which is not conducive to on-site debugging.

Contents of the invention

The technical problem to be solved by the utility model is to provide a self-priming pump negative pressure vacuum water intake device, through the air control valve and filter linked with the self-priming pump, no need for maintenance of cleaning pools, reducing the energy consumption of water delivery.

The utility model is realized in the following way: a self-priming water pump negative pressure vacuum water intake device includes a self-priming pump, a suction pipe, a filter and an air control valve, the water inlet of the suction pipe is equipped with a grille, and the filter Connected to the ground part of the suction pipe, the water inlet of the filter is connected with the water outlet of the suction pipe, and the water outlet of the suction pipe is connected with the water inlet of the self-priming pump; the filter is equipped with a filter screen, and the bottom of the filter is connected with the sewage discharge port. The sewage outlet connected by the pipe, the filter is connected with a recoil cleaning pipe, and the air control valve is installed on the air inlet on the top of the filter.

The air control valve includes a valve body, a piston rod and a valve cover, the valve cover is installed on the top of the valve body, the piston rod is installed in the valve body, the piston rod is equipped with a piston and a return spring, and the bottom of the piston rod is equipped with a A sealing plug matched with the air inlet of the filter. The piston separates the inside of the valve body into two parts: the control chamber and the vent chamber. .

The control port of the air control valve communicates with the water outlet of the self-priming pump through the pressure guiding pipe.

There is an observation window on the filter.

The water inlet of the suction pipe is equipped with a bell mouth.

The negative pressure vacuum water intake device of the self-priming pump of the utility model passes through the air control valve and the filter linked with the self-priming pump, no need for tank cleaning and maintenance, the sundries in the pool can be sucked into the filter for removal, and the discharge pipeline can be realized easily cleaning work. The air control valve installed on the filter has good sealing performance and is easy to control, which reduces the energy consumption of water delivery and significantly increases the flow of water delivery. The air control valve controlled by water pressure is more reliable and durable than the solenoid valve. The manual forced function is convenient for on-site debugging and troubleshooting.

Description of drawings

Fig. 1 is the water suction schematic diagram of existing self-priming pump;

Fig. 2 is the overall schematic diagram of the self-priming water pump negative pressure vacuum water intake device of the present invention;

Fig. 3 is a structural schematic diagram of the air control valve in the utility model.

In the figure: 101 pool, 102 water, 103 self-priming pump, 104 debris, 105 filter, 106 suction pipe, 107 solenoid valve, 108 impeller, 109 pump cavity, 201 bell mouth, 202 grille, 203 filter, 204 Sewage pipe, 205 observation window, 206 air control valve, 207 recoil cleaning pipe, 300 valve body, 301 piston rod, 302 piston, 303 return spring, 304 valve cover, 305 vent hole, 306 pressure guide tube, 307 sealing plug.

Detailed ways

Below in conjunction with specific embodiment, further set forth the utility model. It should be understood that these embodiments are only used to illustrate the present utility model and are not intended to limit the scope of the present utility model. In addition, it should be understood that after reading the content of the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of the application.

Example 1

As shown in Figures 2 and 3, a self-priming pump negative pressure vacuum water intake device includes a self-priming pump 103, a suction pipe 106, a filter 203 and an air control valve 206, and a grille is installed on the water inlet of the suction pipe 106 202 is used as a coarse filter, and the filter 203 is connected to the ground part of the suction pipe 106. In order to facilitate the cleaning and maintenance of the filter 203, the filter 203 is detachable and installed; the water inlet of the filter 203 and the outlet of the suction pipe 106 The water port is connected, and the water outlet of the suction pipe 106 is connected with the water inlet of the self-priming pump 103; a filter screen 105 is housed in the filter 203, and a sewage outlet connected with the sewage pipe 204 is provided at the bottom of the filter 203 to remove sewage, and the filter 203 A recoil cleaning pipe 207 is connected to flush the filter screen 105 , and the air control valve 206 is installed on the air inlet at the top of the filter 203 .

The utility model can be further described as, the air control valve 206 includes a valve body 300, a piston rod 301 and a valve cover 304, the valve cover 304 is installed on the top of the valve body 300, and the piston rod 301 is installed on the valve body Inside 300, piston rod 301 is equipped with piston 302 and return spring 303, and the bottom of piston rod 301 is equipped with sealing plug 307 matched with the air inlet of filter 203. Two parts, the piston 302 and the inner wall of the valve body 300 are sealed by a gasket; the control port of the control chamber is connected to the pressure guiding pipe 306, and the air-permeable chamber has a vent hole 305; the piston rod 301 is connected to the pressure guiding pipe 306 Driven by the pressure water provided, the air inlet on the top of the filter 203 is closed by the sealing plug 307, the valve cover 304 on the top of the air control valve 206 is a compression cover, and the valve cover 304 can be installed in reverse to force the piston rod 301 to close the filter The air inlet at the top of 203; when the pressure in the pressure guiding tube 306 disappears, under the action of the return spring 303, the sealing plug 307 is opened, so that the filter 203 is communicated with the atmosphere through the vent hole 305.

In order to facilitate the observation of the inside of the filter 203, an observation window 205 is provided on the filter 203. Through the transparent observation window 205, the blockage and water flow conditions of the filter screen can be observed, so that the filter screen 105 can be cleaned at a suitable time. , and the vacuum degree inside the filter 203 can also be observed.

In this embodiment, in order to achieve automatic control, the air control valve 206 is automatically opened and closed following the action of the self-priming pump 103, and the control port of the air control valve 206 is connected to the outlet of the self-priming pump 103 through the pressure guiding pipe 306. The water port is connected; after the self-priming pump 103 is started, the impeller rotates, and the outlet pressure of the water in the pump body rises, and the pressure passes through the pressure guiding pipe 306 to make the air control valve 206 close the air inlet at the top of the filter 203, and the impeller of the self-priming pump The gas in the water inlet pipeline is gradually discharged from the pump body, and the water in the pool is sucked up. At this time, the rise of the water level can be observed through the observation window 205. When the water is full of the filter 203, the self-priming pump 103 enters the continuous process. Water delivery status. If it continues to fail to absorb water, there must be an air leak on the pipeline. The valve cover 304 can be turned over and installed to manually close the air inlet on the top of the filter 203, which is very convenient for speed regulation and fault diagnosis; when the self-priming pump 103 stops pumping, the pressure of the pressure guide pipe 306 disappears, and the sealing plug 307 is opened under the effect of back-moving spring 303, and filter 203 is communicated with atmosphere through vent hole 305, and the water in the suction pipe 106 falls back in the pool under the action of gravity at this moment, because filter 203 has penetrated with atmosphere, makes automatic The water in the suction pump 103 will not be emptied due to the siphon effect, otherwise the exhaust cannot be completed at the next startup.

In this embodiment, in order to improve the suction capacity of the suction pipe 106 , the water inlet of the suction pipe 106 is equipped with a bell mouth 201 .

Through the transformation of the inlet suction pipes of the three self-priming pumps, after a period of application, the effect is very satisfactory. After cleaning the filter several times, the sundries in the pool are removed, and the pool cleaning maintenance is no longer required. Due to the addition of the bell mouth, the suction pipe forms a tapered suction pipe structure, which enhances the suction capacity of the pump, and the vacuum degree is increased from 3.5Mpa before the transformation to 5Mpa, and the same water flow rate, the motor current is significantly reduced.

Claims (5)

1. a self-priming water pump negative-pressure vacuum water fetching device, it is characterized in that: comprise self-priming pump (103), suction pipe (106), filter (203) and air shut-off valve (206), grid (202) is housed on the water intake of described suction pipe (106), described filter (203) turns on the above ground portion of suction pipe (106), the water intake of filter (203) is communicated with the water outlet of suction pipe (106), and the water outlet of suction pipe (106) is communicated with the water intake of self-priming pump (103); Filter screen (105) is housed in filter (203), filter (203) bottom has the sewage draining exit be communicated with drain pipe (204), be connected to recoil scavenge pipe (207) on filter (203), described air shut-off valve (206) is arranged on the air intlet at filter (203) top.

2. self-priming water pump negative-pressure vacuum water fetching device as claimed in claim 1, it is characterized in that: described air shut-off valve (206) comprises valve body (300), piston rod (301) and valve gap (304), described valve gap (304) is arranged on the top of valve body (300), described piston rod (301) is arranged in valve body (300), piston (302) and Returnning spring (303) are housed on piston rod (301), the sealing plug (307) matched with filter (203) air intlet is equipped with in piston rod (301) bottom, described piston (302) becomes control room and gas permeable vents two-part by valve body (300) interior separation, the control mouth in described control room is connected with PRESSURE PIPE (306), have air hole (305) on described gas permeable vents.

3. self-priming water pump negative-pressure vacuum water fetching device as claimed in claim 1 or 2 is characterized in that: the control mouth of described air shut-off valve (206) is communicated with the water outlet of self-priming pump (103) by PRESSURE PIPE (306).

4. self-priming water pump negative-pressure vacuum water fetching device as claimed in claim 3, is characterized in that: have viewing window (205) on described filter (203).

5. self-priming water pump negative-pressure vacuum water fetching device as claimed in claim 3, is characterized in that: horn mouth (201) is housed on the water intake of described suction pipe (106).

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