Efficient filtering water ring vacuum pump

Abstract

The utility model discloses an efficient filtering water ring vacuum pump, which relates to the technical field of water ring vacuum pumps and comprises a pump body, an air inlet pipe and a filtering component. The filtering assembly comprises a through pipe, an expansion cavity and an air purifying assembly; the air purification assembly comprises a plurality of groups of filter layers and first grid plates which are alternately arranged in sequence and are fixed to the inner side of the expansion cavity, the arrangement direction of the filter layers and the first grid plates is the same as the expansion direction of the expansion cavity, and filter holes of the filter layers arranged in sequence are gradually reduced; the grid holes of the plurality of groups of sequentially arranged first grid plates are gradually increased, and the plurality of groups of first grid plates are sequentially arranged in an expanded shape; the utility model has the advantages that air is uniformly diffused through the plurality of groups of first grid plates, so that the accumulation of impurities can be reduced, and the gradually expanded filter layer can enlarge the passing surface blown to the filter layer so as to reduce the wind resistance to improve the pumping force and greatly improve the filtering efficiency; and the plurality of groups of first grid plates can support the filter layers one by one so as to improve the overall structural strength.

Description

Technical Field

[0001] This utility model relates to the field of water ring vacuum pump technology, and more specifically to a high-efficiency filtration water ring vacuum pump. Background Technology

[0002] A water ring vacuum pump is a positive displacement vacuum pump that uses liquid (usually water) as the working medium. It achieves gas compression and discharge by forming a liquid ring in the pump chamber.

[0003] To prevent or reduce impurities from entering the pump chamber with the air, thereby reducing the wear between mechanical parts caused by impurities and particulate matter, a water ring vacuum pump is proposed, as described in application number CN201720136560.9, which uses a coarse filter, a fine filter, and a nano filter for air purification.

[0004] While adding filters can improve air quality, the airflow needs to pass through the filters, which creates air resistance, especially during fine processing. If filters are simply installed directly in the existing flow space, there are drawbacks such as high air resistance and poor pumping efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a high-efficiency filtration water ring vacuum pump in order to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] This utility model proposes a high-efficiency filtration water ring vacuum pump, including a pump body, an air inlet pipe disposed on the pump body, and a filter assembly connected to and fixed to the air inlet pipe.

[0008] The filter assembly includes a through pipe with one end connected and fixed to the air inlet pipe, an expansion chamber disposed within the through pipe, and a purification component fixed within the expansion chamber.

[0009] The air purification assembly includes multiple sets of filter layers and first grid plates arranged alternately and fixed to the inside of the expansion chamber, with their arrangement direction being the same as the expansion direction of the expansion chamber. The filter pores of the multiple sets of filter layers arranged alternately gradually decrease in size, and the grid pores of the multiple sets of first grid plates arranged alternately gradually increase in size. All of the multiple sets of first grid plates are arranged in an expanding shape.

[0010] As a preferred embodiment of this utility model, the filter layer is provided with three sets of filter screens arranged in order of decreasing filter pore size, namely the first filter screen, the second filter screen and the third filter screen.

[0011] As a preferred embodiment of this utility model, the first filter screen is a nylon mesh, the second filter screen is a polyester fiber mesh, and the third filter screen is a polypropylene nonwoven fabric.

[0012] As a preferred embodiment of the present invention, the filter assembly further includes a contraction chamber disposed in the through pipe, the contraction chamber being connected to the expansion chamber, and the contraction chamber being closer to the air inlet pipe than the expansion chamber.

[0013] As a preferred embodiment of the present invention, the filter assembly further includes a second grid plate that is fixedly attached to the constriction cavity, and the second grid plate is constricted towards the air inlet pipe.

[0014] The beneficial effects of this utility model are as follows:

[0015] The filter layer consists of multiple sets of filter layers, with the particle size gradually decreasing from top to bottom, resulting in excellent filtration. The multiple sets of first grid plates continuously and evenly diffuse the air from top to bottom, reducing the accumulation of impurities. At the same time, the gradually enlarging filter layer increases the surface area through which the air is blown, reducing wind resistance and increasing pump suction power, thus greatly improving filtration efficiency. Furthermore, the multiple sets of first grid plates provide individual support for the filter layer, enhancing the overall structural strength. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the filter component of this utility model.

[0018] Reference numerals: Pump body-1, Air inlet pipe-2, Filter assembly-3, Through pipe-31, Expansion chamber-32, Air purification assembly-33, Contraction chamber-34, Second grid plate-35, Filter layer-331, First grid plate-332. Detailed Implementation Example 1:

[0019] like Figures 1-2 As shown, this embodiment proposes a high-efficiency filtration water ring vacuum pump, including a pump body 1, an air inlet pipe 2 disposed on the pump body 1, and a filter assembly 3 connected to and fixed to the air inlet pipe 2; the filter assembly 3 is installed at the inlet of the air inlet pipe 2. When in use, the pump body 1 is connected to an external power source and turned on, generating a suction force at the inlet of the filter assembly 3. Air enters at the air inlet end of the filter assembly 3 and passes through the filtered air inlet pipe 2.

[0020] The specific structure of the filter component 3 is shown below:

[0021] The filter assembly 3 includes a pipe 31 whose end is connected and fixed to the air inlet pipe 2, an expansion chamber 32 disposed in the pipe 31, and a purification assembly 33 fixed in the expansion chamber 32; the pipe end of the pipe 31 is oriented vertically and the bottom end of the pipe 31 is connected and fixed to the air inlet pipe 2 (which can be connected by flange or bolts); when air enters the pipe 31, it is filtered by the purification assembly 33 at the expansion chamber 32.

[0022] The air purification assembly 33 includes multiple sets of filter layers 331 and first grid plates 332 arranged alternately and fixed to the inside of the expansion cavity 32. The arrangement direction of the filter layers 331 is the same as the expansion direction of the expansion cavity 32. The filter holes of the multiple sets of filter layers 331 gradually decrease in size, and the grid holes of the multiple sets of first grid plates 332 gradually increase in size. The multiple sets of first grid plates 332 are all arranged in an expanding shape. The connection between the multiple sets of filter layers 331 and the multiple sets of first grid plates 332 and the connection between them and the inside of the expansion cavity 32 can be fixed by means of bonding or other methods.

[0023] like Figure 2 As shown, the expansion cavity 32 gradually increases in size from top to bottom. Air passes through multiple sets of filter layers 331 and multiple sets of first grid plates 332 sequentially from top to bottom within the expansion cavity 32. The multiple sets of filter layers 331 provide multiple layers of blocking for impurities, with the particle size gradually decreasing from top to bottom, resulting in good filtration. The multiple sets of first grid plates 332 continuously and evenly diffuse the air from top to bottom, reducing the accumulation of impurities. At the same time, the gradually expanding filter layers 331 can increase the surface area through which air is blown to the filter layers 331, thereby reducing wind resistance, increasing pump suction, and greatly improving filtration efficiency. The multiple sets of first grid plates 332 can provide support for each filter layer 331 to improve the overall structural strength.

[0024] The filter layer 331 is provided with three sets of filter screens arranged in order of decreasing filter pore size, namely the first filter screen, the second filter screen and the third filter screen;

[0025] The first filter screen is made of nylon mesh. This nylon material has excellent wear resistance and tensile strength, making it suitable for use as a primary filter.

[0026] The second filter screen is a polyester fiber (PET) mesh, which has good chemical corrosion resistance, heat resistance and dimensional stability, and is also low in cost, making it suitable for use as a medium-efficiency filtration component.

[0027] The third filter screen is made of polypropylene (PP) nonwoven fabric, which has good hydrophobicity, air permeability and filtration accuracy, and is lightweight and low in cost, making it suitable for use as a high-efficiency filtration component. Example 2:

[0028] like Figures 1-2As shown, the difference between it and Embodiment 1 is that the filter assembly 3 further includes a contraction chamber 34 disposed in the through pipe 31, the contraction chamber 34 is connected to the expansion chamber 32, and the contraction chamber 34 is closer to the air inlet pipe 2 than the expansion chamber 32.

[0029] A contraction chamber 34 is connected to the inside of the through pipe 31 and the bottom of the expansion chamber 32. The contraction chamber 34 gradually decreases in size from top to bottom. When the filtered air enters the contraction chamber 34, it can be contracted and guided into the air inlet pipe 2 to reduce the flow resistance. Example 3:

[0030] like Figures 1-2 As shown, the difference between this embodiment and embodiment 2 is that the filter assembly 3 further includes a second grid plate 35 that is attached and fixed in the contraction cavity 34, and the second grid plate 35 is in a contracted shape facing the air inlet pipe 2;

[0031] A second grid plate 35 is attached and fixed (by means of bonding, etc.) inside the contraction cavity 34. The second grid plate 35 gradually decreases in size from top to bottom (that is, the grid cavity in the second grid plate 35 gradually decreases). The filtered air can be separated and evenly enter the air inlet pipe 2 after passing through the second grid plate 35, resulting in better airflow.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-efficiency filtration water ring vacuum pump, comprising a pump body (1), an air inlet pipe (2) disposed on the pump body (1), and a filter assembly (3) connected to and fixed to the air inlet pipe (2). Its features are, The filter assembly (3) includes a through pipe (31) whose end is connected and fixed to the air inlet pipe (2), an expansion chamber (32) provided in the through pipe (31), and a purification assembly (33) fixed in the expansion chamber (32). The air purification assembly (33) includes multiple sets of filter layers (331) and first grid plates (332) arranged alternately and fixed to the inside of the expansion cavity (32), and their arrangement direction is the same as the expansion direction of the expansion cavity (32). The filter holes of the multiple sets of filter layers (331) arranged alternately gradually decrease, and the grid holes of the multiple sets of first grid plates (332) arranged alternately gradually increase. The multiple sets of first grid plates (332) are all arranged in an expanding shape.

2. The high-efficiency filtration water ring vacuum pump according to claim 1, characterized in that, The filter layer (331) has three sets arranged in order of decreasing pore size: the first filter screen, the second filter screen and the third filter screen.

3. The high-efficiency filtration water ring vacuum pump according to claim 2, characterized in that, The first filter screen is made of nylon mesh, the second filter screen is made of polyester fiber mesh, and the third filter screen is made of polypropylene nonwoven fabric.

4. The high-efficiency filtration water ring vacuum pump according to claim 1, characterized in that, The filter assembly (3) also includes a contraction chamber (34) disposed in the through pipe (31), the contraction chamber (34) is connected to the expansion chamber (32), and the contraction chamber (34) is closer to the air inlet pipe (2) than the expansion chamber (32).

5. A high-efficiency filtration water ring vacuum pump according to claim 4, characterized in that, The filter assembly (3) also includes a second grid plate (35) that is attached and fixed inside the constriction chamber (34), and the second grid plate (35) is constricted towards the air inlet pipe (2).

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