A pre-pump filter and a filter cartridge thereof

Abstract

The utility model belongs to filter technical field provides a pump front filter and filter core thereof, and the filter core includes: framework, is the tubular structure, is equipped with a plurality of through -holes on the circumference side wall, and the filter screen is covered on the circumference outside wall of framework by the way of detachable to cover all through -holes, wherein, the circumference inside wall of framework is equipped with multiple groups of radial support, and each group of radial support is by the equal distribution of circumference of many round tubes and is welded into the butt joint point with the center of framework. The pump front filter includes T type pipe and the filter core. The filter core can increase the support strength of framework through multiple groups of radial support, effectively improve the impact resistance and deformation resistance of filter screen, ensure the filtering effect of filter core, greatly improve the stability and service life of the filter core, so as to indirectly guarantee that the single water circulating pump can continuously, safely and stably run.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, specifically to a pre-pump filter and its filter element. Background Technology

[0002] As crystalline silicon production capacity increases, the size and flow rate of the individual water circulation pumps used in crystalline silicon production also increase. The pre-pump filter at the inlet of the individual water circulation pump, acting as an interception device for impurities in the circulating medium, is extremely important for the stability of the pump's operation; it is an effective barrier ensuring the normal operation of the individual water circulation pump.

[0003] Currently, pre-pump filters have a T-shaped structure, mainly consisting of a T-shaped pipe and a filter element installed in its straight section. To meet the increased crystalline silicon production capacity, the inner diameter of the straight section of the T-shaped pipe and the diameter of the filter element used are both relatively large (over 1m). When water enters the vertical section of the T-shaped pipe, the filter screen is directly impacted by the water flow, causing deformation. The deformed filter screen cannot effectively intercept impurities in the circulating medium, thus reducing the filtration effect of the filter element and causing fatal damage to the stable operation of the individual water circulation pump. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a pre-pump filter and its filter element to solve the problem that existing filter elements with larger diameters deform under the direct impact of water flow. Deformed filter elements cannot effectively intercept impurities in the circulating medium, thus reducing the filtration effect of the filter element and causing fatal damage to the stable operation of a single water circulation pump.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A pre-pump filter and its filter element, comprising:

[0007] The skeleton has a cylindrical structure with several through holes on its circumferential sidewalls; and

[0008] The filter screen is detachably wrapped around the outer circumferential wall of the skeleton to cover all the through holes;

[0009] The inner circumferential wall of the skeleton is provided with multiple sets of radial supports. Each set of radial supports is formed by welding multiple circumferentially distributed circular tubes together with the center of the skeleton as the joint point.

[0010] In one embodiment disclosed in this application, the circular tube is obtained by cutting a DN15 steel pipe, with one end sharpened to facilitate butt welding and spot welding, and the other end vertically welded to the inner circumference wall of the skeleton.

[0011] In one embodiment disclosed in this application, each set of radial supports comprises six circumferentially distributed circular tubes, which are welded together to form a star-shaped structure.

[0012] The skeleton is provided with three sets of radial supports at equal intervals along its axial direction.

[0013] In one embodiment disclosed in this application, the skeleton is formed by rolling an 8mm thick steel plate, and the above-mentioned through holes are processed in a matrix distribution before the steel plate is rolled.

[0014] In one embodiment disclosed in this application, the diameter of the through hole is larger than the mesh diameter of the filter screen.

[0015] In one embodiment disclosed in this application, the filter screen is clamped to the outer circumferential wall of the skeleton by a pair of annular pressure plates.

[0016] In one embodiment disclosed in this application, each of the annular pressure plates is provided with a plurality of circumferentially distributed support blocks that correspond to the circular tube along its radial direction;

[0017] Each of the support blocks has its end away from the filter screen in contact with the inner circumferential wall of the straight section of the T-shaped pipe used to install the filter element.

[0018] In one embodiment disclosed in this application, the steel plate, steel pipe, filter screen and annular pressure plate are all made of stainless steel.

[0019] A pre-pump filter, comprising:

[0020] T-type pipes and filter elements described in any of the above;

[0021] The straight section of the T-shaped pipe is connected to a flange cover at one end and to the inlet of a single water circulation pump at the other end.

[0022] The filter element is inserted into the straight section of the T-shaped pipe and is sealed against the flange cover and an annular retaining ring, which is located inside the other end of the straight section of the T-shaped pipe.

[0023] One end of the frame is sealed by the flange cover, and the other end is connected to the inlet end of the single water circulation pump.

[0024] In one embodiment disclosed in this application, two baffles are provided on the inner circumferential wall of the vertical section of the T-shaped pipe;

[0025] The two baffles are inclined and staggered along the direction of the circulating medium flow.

[0026] Compared with the prior art, the beneficial effects of this utility model are:

[0027] 1. Multiple sets of radial supports can increase the support strength of the frame, effectively improve the filter screen's impact and deformation resistance, ensure the filtration effect of the filter element, and significantly improve the stability and service life of the filter element, thereby indirectly ensuring the continuous, safe and stable operation of the single water circulation pump.

[0028] 2. The removable filter screen expands the applicability of this filter element.

[0029] 3. By using support blocks to separate the filter element and the inner circumference of the straight section of the T-shaped pipe, an annular filtration channel is formed. At the same time, the coaxiality of the two can be ensured, so that the circulating medium entering from the vertical section of the T-shaped pipe can be evenly distributed around the filter screen, thereby improving the filtration efficiency of the filter element.

[0030] 4. Utilizing the non-deformable nature of this filter element, the frequency of maintenance can be significantly reduced, the risk of shutdown of individual water circulation pumps can be lowered, and reliable support can be provided for the stable operation of the system under high production capacity. At the same time, it is easier to remove and clean, which helps to improve maintenance efficiency.

[0031] 5. This baffle plate can slow down the flow rate of the circulating medium, consume the flow potential energy of the circulating medium, and reduce the impact of the circulating medium on the filter screen, thereby protecting the filter screen. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the main cross-sectional structure of the pre-pump filter;

[0034] Figure 2 This is a schematic diagram of the filter element from the left. Detailed Implementation

[0035] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this invention.

[0041] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0042] See Figure 1 and Figure 2 As shown, in one aspect, this utility model provides a filter element, comprising:

[0043] The skeleton 10 has a cylindrical structure, and several through holes 11 are formed on its circumferential sidewalls; and

[0044] The filter screen 20 is detachably wrapped around the outer circumferential wall of the frame 10 to cover all the through holes 11;

[0045] The inner circumferential wall of the skeleton 10 is provided with multiple sets of radial supports 12, each set of radial supports 12 is formed by welding multiple circumferentially distributed round tubes with the center of the skeleton 10 as the docking point.

[0046] Specifically, the circular tubes are made from DN15 steel pipes, with one end sharpened for easy butt welding and spot welding, and the other end welded perpendicularly to the inner circumference of the frame 10 (i.e., each circular tube is arranged radially along the frame 10). Thus, under the impact of water flow, the filter screen 20 is less prone to deformation due to the support of the frame 10 and its multiple sets of radial supports 12. In other words, the multiple sets of radial supports 12 increase the support strength of the frame 10, effectively improving the filter screen 20's impact and deformation resistance, ensuring the filtration effect of the filter element, and significantly improving the stability and service life of the filter element, thereby indirectly ensuring the continuous, safe, and stable operation of the single-unit water circulation pump.

[0047] In this embodiment, each set of radial supports 12 comprises 6 circumferentially distributed circular tubes, which are welded together to form a star-shaped structure; the frame 10 has 3 sets of radial supports 12 arranged at equal intervals along its axial direction. The star-shaped structure can evenly disperse external impact forces, and the 3 sets of radial supports 12 can form three reinforced support points at the front, middle and rear positions of the frame 10.

[0048] The skeleton 10 is formed by rolling an 8mm thick steel plate. Before rolling, the aforementioned through holes 11 are machined in a matrix distribution. Rolling the steel plate to form the skeleton 10 results in a fast production cycle and low cost.

[0049] The diameter of the through hole 11 is larger than the mesh size of the filter screen 20. This reduces resistance and allows the filtered circulating medium to flow quickly. In this embodiment, the diameter of the through hole 11 is 8 mm.

[0050] The filter screen 20 is secured to the outer circumferential wall of the frame 10 by a pair of annular pressure plates 30. Thus, by removing the annular pressure plates 30, filter screens 20 with different mesh sizes can be replaced according to the specific usage environment and different circulating media. In other words, the removable filter screen 20 expands the applicability of this filter element.

[0051] Each annular pressure plate 30 has multiple circumferentially distributed support blocks 31 corresponding to the circular tube along its radial direction. The end of each support block 31 away from the filter screen 20 is in contact with the inner circumferential wall of the straight section of the T-shaped pipe 40 used to install the filter element. The support blocks 31 separate the filter element and the inner circumferential wall of the straight section of the T-shaped pipe 40 to form an annular filtration channel, while ensuring their coaxiality. This allows the circulating medium entering from the vertical section of the T-shaped pipe 40 to be evenly distributed around the filter screen 20, thereby improving the filtration efficiency of the filter element.

[0052] In this embodiment, the steel plate, steel pipe, filter screen 20, and annular pressure plate 30 are preferably made of stainless steel. Stainless steel has good corrosion resistance and a longer service life.

[0053] On the other hand, this utility model provides a pre-pump filter, including a T-shaped pipe 40 and the filter element described above. One end of the straight section of the T-shaped pipe 40 is connected to a flange cover (not shown in the figure), and the other end is connected to the inlet end of a single water circulation pump. The filter element is installed in the straight section of the T-shaped pipe 40 by insertion and is sealed between the flange cover and an annular retaining ring 41 (that is, the flange cover and the annular retaining ring 41 seal the two ends of the above-mentioned annular filter channel). The annular retaining ring 41 is located inside the other end of the straight section of the T-shaped pipe 40. One end of the frame 10 is sealed by the flange cover, and the other end is connected to the inlet end of the single water circulation pump. In use, the circulating medium flows from the vertical section of the T-shaped pipe 40 to the straight section, and is evenly distributed around the filter screen 20 within the annular filter channel. Impurities are intercepted by the filter screen 20. The filtered circulating medium flows through the through hole 11 into the cylindrical structure of the frame 10, and finally flows downstream under the suction of the single-unit water circulation pump. During maintenance, the filter element can be removed by opening the flange cover for cleaning or replacement of the filter screen 20. Utilizing the non-deformable nature of this filter element, the frequency of maintenance can be significantly reduced, the risk of single-unit water circulation pump shutdown can be lowered, and reliable support can be provided for the stable operation of the system under high production capacity. At the same time, its removal and cleaning are easier, which helps to improve maintenance efficiency.

[0054] Two baffles 42 are provided on the inner circumference of the vertical section of the T-shaped pipe 40. The two baffles 42 are inclined and staggered along the flow direction of the circulating medium. Through these baffles 42, the flow velocity of the circulating medium can be slowed down, the flow potential energy of the circulating medium can be consumed, and the impact of the circulating medium on the filter screen 20 can be reduced, thereby protecting the filter screen 20.

[0055] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.

Claims

1. A filter element, characterized in that, include: The skeleton has a cylindrical structure with several through holes on its circumferential sidewalls; and The filter screen is detachably wrapped around the outer circumferential wall of the skeleton to cover all the through holes; The inner circumferential wall of the skeleton is provided with multiple sets of radial supports. Each set of radial supports is formed by welding multiple circumferentially distributed circular tubes together with the center of the skeleton as the joint point.

2. The filter element according to claim 1, characterized in that, The circular tube is made by cutting a DN15 steel pipe, with one end sharpened to facilitate butt jointing and spot welding, and the other end welded perpendicularly to the inner circumference wall of the skeleton.

3. The filter element according to claim 2, characterized in that: Each set of radial supports comprises six circumferentially distributed circular tubes, which are welded together to form a star-shaped structure. The skeleton is provided with three sets of radial supports at equal intervals along its axial direction.

4. The filter element according to claim 3, characterized in that, The frame is formed by rolling an 8mm thick steel plate, and the above-mentioned through holes are processed in a matrix distribution before the steel plate is rolled.

5. The filter element according to any one of claims 1 to 4, characterized in that, The diameter of the through hole is larger than the mesh size of the filter screen.

6. The filter element according to claim 4, characterized in that, The filter screen is clamped to the outer circumferential wall of the frame by a pair of annular pressure plates.

7. The filter element according to claim 6, characterized in that: Each of the aforementioned annular pressure plates is provided with a plurality of circumferentially distributed support blocks that correspond to the circular tube along its radial direction; Each of the support blocks has its end away from the filter screen in contact with the inner circumferential wall of the straight section of the T-shaped pipe used to install the filter element.

8. The filter element according to claim 6 or 7, characterized in that, The steel plate, steel pipe, filter screen and annular pressure plate are all made of stainless steel.

9. A pre-pump filter, characterized in that, include: T-shaped pipe and filter element as described in any one of claims 1 to 8; The straight section of the T-shaped pipe is connected to a flange cover at one end and to the inlet of a single water circulation pump at the other end. The filter element is inserted into the straight section of the T-shaped pipe and is sealed against the flange cover and an annular retaining ring, which is located inside the other end of the straight section of the T-shaped pipe. One end of the frame is sealed by the flange cover, and the other end is connected to the inlet end of the single water circulation pump.

10. The pre-pump filter according to claim 9, characterized in that: Two baffles are provided on the inner circumference of the vertical section of the T-shaped pipe; The two baffles are inclined and staggered along the direction of the circulating medium flow.

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