Anti-blocking bottom valve of semi-submersible electromagnetic diaphragm metering pump

Abstract

The utility model provides an anti-blocking bottom valve of a semi-submersible electromagnetic diaphragm metering pump. The anti-blocking bottom valve comprises a suspension cavity, a filter element shell in threaded connection with the suspension cavity, and a cover body connected with the filter element shell, the filter element shell is arranged at the top of the suspension cavity and is positioned above the filter element shell; the cover body is arranged at the top of the filter element shell and is provided with a channel for liquid circulation; a filter element is arranged in the filter element shell; the side face of the filter element shell is provided with a grating for liquid to flow in, and the filter element is provided with filter holes communicated with the grating; and the width of the grating is greater than the aperture of the filter holes. And the suspension depth of the bottom valve in a medicament solution is controlled by adjusting the counterweight mass of the bottom valve. The inner layer and the outer layer have different filter apertures, so that impurities with different particle sizes can be filtered, adhesive medicaments can be intercepted, and the filter load of the filter element is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment devices, in particular to an anti-clogging bottom valve of a semi-submersible electromagnetic diaphragm metering pump. Background Art

[0002] In the water treatment process, the corrosion and scale inhibitors used contain impurities that sink to the bottom and sticky chemicals that float, which will cause the filter screen of the electromagnetic diaphragm metering pump's bottom valve to be blocked by impurities and colloids in the chemicals. The electromagnetic diaphragm metering pump's bottom valve cannot absorb the chemicals normally. In severe cases, it will cause the metering pump to overheat and burn out. The daily cleaning and maintenance of the electromagnetic diaphragm metering pump's bottom valve is cumbersome, requires manual cleaning, and has low efficiency.

[0003] In summary, the prior art has the following problems: the bottom valve of the electromagnetic diaphragm metering pump is easily clogged, and it is not possible to ensure that the dosing is carried out stably and smoothly. Utility Model Content

[0004] The utility model provides an anti-clogging bottom valve for a semi-submersible electromagnetic diaphragm metering pump, which solves the technical problem of how to solve the problem that the bottom valve of the electromagnetic diaphragm metering pump is easily clogged and cannot ensure stable and smooth drug addition.

[0005] To achieve the above-mentioned purpose, the present invention proposes an anti-clogging bottom valve for a semi-submersible electromagnetic diaphragm metering pump, comprising:

[0006] A suspension chamber, a filter element housing threadedly connected to the suspension chamber, and a cover connected to the filter element housing;

[0007] The filter element housing is arranged on the top of the suspension chamber and is located above the filter element housing; the cover is arranged on the top of the filter element housing and is provided with a channel for liquid circulation;

[0008] A filter element is arranged in the filter element housing; a grid for liquid inflow is arranged on the side of the filter element housing, and filter holes communicating with the grid are arranged on the filter element; the width of the grid is greater than the aperture of the filter holes.

[0009] Specifically, a cavity is provided in the suspension chamber, and a counterweight is provided in the cavity.

[0010] Specifically, the counterweight is pressed against the bottom of the cavity by a spring, and the spring contacts the bottom of the filter element housing.

[0011] Specifically, the filter element housing is connected to the cover body through a sealing ring.

[0012] Specifically, a thread is provided on the outer side of the top end of the cover body, and the cover body is connected to the pipette thread.

[0013] Specifically, a through hole is provided in the middle of the cover body.

[0014] Specifically, the filter element housing is hollow and has an open top structure. The filter element housing is provided with a bottom plate connected to the side surface of the filter element housing, and the bottom plate is pressed against the spring.

[0015] Specifically, the width of the grille is 3 - 5 mm, and the aperture of the filter holes is 0.05 - 0.2 mm.

[0016] Specifically, the suspension cavity is hermetically connected to the filter element housing.

[0017] Specifically, the outer surface of the cover body is provided with raised points.

[0018] The beneficial effects of the present utility model are as follows: By using the anti-blocking bottom valve of the semi-submersible electromagnetic diaphragm metering pump of the present utility model, the bottom valve floats at a certain depth below the liquid level, avoiding the adhesion of floating colloids to the bottom valve. The filter element housing can adsorb colloids to prevent them from entering the filter element. At the same time, the bottom valve can rise and fall with the liquid level to prevent the metering pump from dry running. It also blocks other impurities in the chemical agent from entering the metering pump body and causing blockage of the check valve. This reduces the daily cleaning and maintenance of the bottom valve and improves work efficiency. Description of the Drawings

[0019] Figure 1 is an exploded structural schematic diagram of an anti-blocking bottom valve of a semi-submersible electromagnetic diaphragm metering pump according to an embodiment of the present utility model;

[0020] Figure 2 is a structural schematic diagram of an anti-blocking bottom valve of a semi-submersible electromagnetic diaphragm metering pump according to an embodiment of the present utility model.

[0021] Explanation of the Reference Numerals in the Drawings:

[0022] 1. Cover body; 2. Sealing ring; 3. Filter element; 4. Filter element housing; 5. Spring; 6. Counterweight; 7. Suspension cavity. Detailed Embodiment

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] The technical solution adopted by the present utility model is: An anti-blocking bottom valve of a semi-submersible electromagnetic diaphragm metering pump uses a counterweight to make the bottom valve float on the liquid surface, avoiding the adhesion of floating colloids to the bottom valve.

[0025] Different filter pore sizes are used inside and outside. The outer layer has large pore sizes, and the inner layer has small pore sizes, which can filter impurities with different particle sizes and intercept sticky agents, thereby reducing the filtration load of the filter element.

[0026] An embodiment of the utility model provides an anti-blocking bottom valve for a semi-submersible electromagnetic diaphragm metering pump, as Figure 1 shown, including:

[0027] A suspension cavity 7, a filter element housing 4 connected to the suspension cavity 7, and a cover body 1 connected to the filter element housing 4; the filter element housing 4 is arranged at the top of the suspension cavity 7 and above the filter element housing 4; the cover body 1 is arranged at the top of the filter element housing 4 and a channel for liquid flow is provided on the cover body 1;

[0028] Internal threads are provided on the inner side of the upper part of the suspension cavity 7, and external threads are provided at the bottom of the filter element housing 4. The suspension cavity 7 and the filter element housing 4 are connected by threads. A cavity is arranged in the suspension cavity 7, and a counterweight 6 is arranged in the cavity; the counterweight 6 is fixed in the cavity by a spring 5. The counterweight 6 is pressed against the bottom of the cavity by the spring 5, and the spring 5 is pressed tightly against the bottom of the filter element housing 4. The filter element housing 4 is hollow and has an open top structure. The filter element housing 4 is provided with a bottom plate connected to the side of the filter element housing 4, and the bottom plate is pressed tightly on the spring 5 and closes the top of the suspension cavity 7, so that the suspension cavity 7 becomes a cavity that can float or suspend in the liquid (agent). The counterweight 6 can be an iron block or a metal block with different weights, and the counterweight 6 can be replaced according to the situation of the liquid (agent).

[0029] The suspension cavity 7 can be used to make the bottom valve suspend in the agent. The bottom valve suspends at a certain depth below the liquid level to avoid floating colloid adhering to the bottom valve; the counterweight 6 is fixed at the bottom of the cavity by a spring and will not move randomly in the cavity; a filter element 3 is arranged in the filter element housing 4. A liquid inlet grille is arranged on the side of the filter element housing 4, and filter holes communicated with the grille are arranged on the filter element 3; the width of the grille is greater than the aperture of the filter holes.

[0030] The filter element housing 4 is connected to the cover body 1 through a sealing ring 2.

[0031] External threads are provided on the outer side of the top end of the cover body 1, and the cover body 1 is threadedly connected to the liquid suction pipe. Internal threads for connecting to the filter element housing 4 are provided on the inner side of the bottom end of the cover body 1. The outer layer of the filter element housing 4 has large pore sizes. When the cover body 1 is tightened with the filter element housing 4, the inner filter element 3 is compacted to ensure that the solution enters the filter element along the grille and then enters the pump body through the through hole in the center of the cover body 1.

[0032] The filter element 3 uses a curly type, which extends the particle sedimentation time to achieve the filtering effect. The material of the filter element 3 is a fabric made of resins such as polypropylene (PP), polyethylene (PE), and polyester. The width of the fabric is equivalent to the height of the filter element housing. After the cover body 1 is tightened, the filter element can be compacted to ensure that the solution enters the pump body along a curved path.

[0033] A through hole is provided in the middle of the cover body 1. The width of the grid is 3 - 5 mm, and the aperture of the filter hole is 0.05 - 0.2 mm. Different specifications of filtering apertures are used inside and outside. The outer layer has a large aperture, and the inner layer has a small aperture, which can filter impurities with different particle sizes and intercept sticky agents, thereby reducing the filtering load of the filter element.

[0034] The suspension cavity 7 is hermetically connected to the filter element housing 4. The outer surface of the cover body 1 is provided with bumps to increase friction for easy screwing.

[0035] The bottom valve floats at a certain depth below the liquid level to prevent floating colloids from adhering to the bottom valve. The filter element housing can adsorb colloids to prevent them from entering the filter element. At the same time, the bottom valve can rise and fall with the liquid level to prevent the metering pump from sucking air; to prevent other impurities in the agent from entering the metering pump body and causing the one-way valve to block; it can be adapted to agents with different densities, and the suspension depth of the bottom valve in the agent solution can be controlled by adjusting the weight of the bottom valve.

[0036] Embodiment:

[0037] As Figure 1 、 Figure 2 shown, the embodiment of the present utility model provides a semi-submersible electromagnetic diaphragm metering pump anti-blocking bottom valve. The bottom valve of this electromagnetic metering pump has a self - contained cavity, and the sedimentation depth between the bottom valve of the electromagnetic diaphragm metering pump and the liquid level can be controlled by adjusting the weight. The weight is fixed at the bottom of the cavity by a spring and will not move randomly in the cavity; different specifications of filtering apertures are used inside and outside. The outer layer has a large aperture, and the inner layer uses a curly - type filter element to extend the particle sedimentation time to achieve the filtering effect. This filter element uses a fabric mainly made of resins such as polypropylene (PP), polyethylene (PE), and polyester. The width of the fabric is equivalent to the height of the filter element housing. After tightening, the filter element can be compacted to ensure that the solution enters the pump body along a curly path. The cover on the bottom valve, the filter element housing, and the bottom valve cavity are made of polyethylene (PE) material.

[0038] The present utility model has the following beneficial effects:

[0039] 1. It can be adapted to agents with different densities, and the suspension depth of the bottom valve in the agent solution can be controlled by adjusting the weight of the bottom valve.

[0040] 2. It has different specifications of filtering apertures in the inner and outer layers, which can filter impurities with different particle sizes and intercept sticky agents, thereby reducing the filtering load of the filter element.

[0041] 3. The filter element is simple to install and convenient to disassemble and clean, facilitating equipment replacement and maintenance work.

[0042] 4. Acid and alkali resistant, reducing the replacement frequency, saving and environmentally friendly.

[0043] The above are only the schematic specific embodiments of the present utility model, and are not intended to limit the scope of the present utility model. The components of the present utility model can be combined with each other under the condition of no conflict. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principle of the present utility model shall fall within the scope of protection of the present utility model.

Claims

1. A bottom valve for preventing blockage of a semi-submersible electromagnetic diaphragm metering pump, characterized in that Comprising: A suspension cavity (7), a filter element housing (4) threadedly connected to the suspension cavity (7), and a cover body (1) connected to the filter element housing (4); The filter element housing (4) is disposed at the top of the suspension cavity (7) and is located above the filter element housing (4); the cover body (1) is disposed at the top of the filter element housing (4) and a channel for liquid flow is provided on the cover body (1); A filter element (3) is disposed inside the filter element housing (4); a grille for liquid inflow is provided on the side of the filter element housing (4), and filter holes communicating with the grille are provided on the filter element (3); the width of the grille is greater than the aperture of the filter holes.

2. The anti-clogging foot valve of a semi-submersible electromagnetic diaphragm metering pump according to claim 1, characterized in that, A cavity is provided inside the suspension cavity (7), and a counterweight (6) is provided inside the cavity.

3. The anti-clogging foot valve of a semi-submersible electromagnetic diaphragm metering pump according to claim 2, characterized in that, The counterweight (6) is pressed against the bottom of the cavity by a spring (5), and the spring (5) contacts the bottom of the filter element housing (4).

4. The anti-clogging foot valve of a semi-submersible electromagnetic diaphragm metering pump according to claim 1, characterized in that, The filter element housing (4) is connected to the cover body (1) through a sealing ring (2).

5. The anti-clogging foot valve of a semi-submersible electromagnetic diaphragm metering pump according to claim 1, characterized in that, External threads are provided on the outer side of the top end of the cover body (1), and the cover body (1) is threadedly connected to a liquid suction pipe.

6. The anti-clogging bottom valve of a semi-submersible electromagnetic diaphragm metering pump according to claim 5, characterized in that, A through hole is provided in the middle of the cover body (1).

7. A clogging prevention bottom valve for a semi-submersible electromagnetic diaphragm metering pump according to claim 3, characterized in that, The filter element housing (4) is hollow and has an open top structure, and a bottom plate connected to the side of the filter element housing (4) is provided, and the bottom plate presses against the spring (5).

8. The anti-clogging foot valve of a semi-submersible electromagnetic diaphragm metering pump according to claim 2, characterized in that, The width of the grille is 3 to 5 mm, and the aperture of the filter holes is 0.05 to 0.2 mm.

9. A non-clogging foot valve for a semi-submersible electromagnetic diaphragm metering pump according to claim 1, characterized in that, The suspension cavity (7) is hermetically connected to the filter element housing (4).

10. A clogging prevention foot valve for a semi-submersible electromagnetic diaphragm metering pump according to claim 1, characterized in that, Convex points are provided on the outer surface of the cover body (1).

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