Scraper filter

Abstract

The utility model discloses a scraper filter which comprises a shell and a filter element, the inner wall of the shell is connected with a first support and a second support which extend in the axial direction, the top and the bottom of the filter element are connected to the first support and the second support respectively, and a fixing assembly is arranged between the shell and the side wall of the filter element. The second support is provided with a connecting part and a bearing part from outside to inside, the upper surface of the bearing part is lower than the connecting part, a mounting groove is formed between the bearing part and the connecting part, the bottom of the filter element is embedded into the mounting groove, the side wall of the filter element is attached to the peripheral wall of the mounting groove, the fixing assembly is arranged above the connecting part, and the side wall of the fixing assembly is flush with the peripheral wall of the mounting groove. The cross section of the fixing assembly is C-shaped, a cavity is formed in the middle of the side, close to the connecting part, of the fixing assembly, and supporting walls at the two ends of the cavity are connected with the connecting part. According to the scraper filter, the fixing assembly is arranged between the shell and the filter element of the scraper filter, so that the filter element can be effectively fixed, the problems of displacement, deformation and damage of the filter element in the operation process of the filter are solved, meanwhile, the sealing effect of the filter element is assisted, and impurities in stock solution are prevented from entering clear liquid from gaps.

Description

Technical Field

[0001] The utility model belongs to the technical field of filtering, and in particular relates to a scraper filter. Background Art

[0002] At present, the liquid to be treated in the scraper filter enters the body from the feed port, and the impurities in the liquid are deposited on the stainless steel filter screen, thereby generating a pressure difference. When the pressure difference reaches the set value, the motor drives the middle brush to rotate to clean the filter element, and at the same time opens the drain valve to discharge sewage. After cleaning, the drain valve is closed, the motor stops rotating, the system returns to the initial state, and begins to enter the next filtering process.

[0003] Common large-diameter scraper filters only have a groove slightly larger than its outer diameter and about 5mm deep at the bottom of the filter element as a bottom fixation. Typical problems with this type of structure are: when the working pressure is high, the flux is large, and there are many impurities in the feed, the filter basket is easily displaced, deformed, and damaged, causing the filter to fail to work properly.

[0004] Especially when the bottom of the filter element is not completely fixed and the liquid level inside the filter is low, the filter element will be displaced under the action of the pressure difference, and the filter element will be deformed or even damaged during the rotation of the middle brush, thus affecting the use of the filter.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a scraper filter, which adds a circle of fixing ring and a sealing ring to the outer edge of the groove for fixing the filter basket at the bottom of the cylinder to solve the problems of displacement, deformation, breakage, etc. of the filter basket.

[0007] To achieve the above purpose, the technical solution of the utility model is:

[0008] A scraper filter comprises a shell and a filter element, wherein the inner wall of the shell is connected with a first bracket and a second bracket extending axially, the top and the bottom of the filter element are respectively connected to the first bracket and the second bracket, and a fixing component is arranged between the shell and the side wall of the filter element;

[0009] The second bracket is provided with a connecting portion and a receiving portion from the outside to the inside, respectively. The upper surface of the receiving portion is arranged lower than the connecting portion. A mounting groove is formed between the receiving portion and the connecting portion. The bottom of the filter element is embedded in the mounting groove. The side wall of the filter element is fitted with the peripheral wall of the mounting groove. The fixing assembly is arranged above the connecting portion, and its side wall is flush with the peripheral wall of the mounting groove.

[0010] The cross section of the fixing component is C-shaped, and a cavity is provided in the middle of one side close to the connecting portion, and the supporting walls at both ends of the cavity are connected to the connecting portion.

[0011] Furthermore, the fixing assembly is arranged between the first bracket and the second bracket.

[0012] Furthermore, the fixing assembly is arranged close to the second bracket.

[0013] Furthermore, the fixing assembly is connected to the second bracket.

[0014] Furthermore, the fixing assembly and the second bracket are integrally formed.

[0015] Furthermore, a chamfer is provided on the top of one side of the fixing component close to the filter element.

[0016] Furthermore, the bottom of the chamfer is higher than the upper surface of the cavity.

[0017] Furthermore, the fixing component is made of elastic material.

[0018] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art.

[0019] (1) The utility model sets a fixing component between the outer shell and the filter element of the scraper filter, which can effectively fix the filter element and prevent the filter element from being displaced, deformed and damaged during the operation of the filter. At the same time, it also helps the sealing effect of the filter element and prevents impurities in the original liquid from entering the clear liquid through the gap.

[0020] (2) The fixing assembly of the utility model has a simple structure and low cost. Its cross section is C-shaped, and a cavity is provided in the middle of one side close to the second bracket connection part. The setting of the cavity can play a role in buffering and energy absorption, while reducing the manufacturing cost.

[0021] (3) The top of the fixing assembly of the utility model close to the filter element is provided with a chamfer to form a guide, thereby facilitating the installation and debugging of the filter element.

[0022] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings:

[0024] Figure 1 It is a side sectional view of the scraper filter of the utility model;

[0025] Figure 2 yes Figure 1 A magnified schematic diagram of position A in the middle.

[0026] In the figure:

[0027] 1. Power system;

[0028] 2. Shell; 21. Inlet; 22. Outlet; 23. Drainage outlet; 24. Flushing outlet; 25. Impurity collection chamber;

[0029] 3. Filter element;

[0030] 4. The first bracket;

[0031] 5. second bracket; 51. connecting portion; 52. receiving portion;

[0032] 6. Rotating shaft; 61. Scraper;

[0033] 7. Fixing assembly; 71. Cavity; 72. Chamfer;

[0034] 8. Stirring device.

[0035] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0037] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] like Figure 1 and Figure 2 As shown, the utility model provides a scraper filter, which mainly includes a power system, a shell and a filter element. The side wall of the filter element is covered with filter meshes. The diameter of the filter element is smaller than the shell so that there is a certain interval between the two for liquid to flow.

[0041] The shell 2 of a common scraper filter is cylindrical as a whole and is placed vertically. The filter element 3 is arranged inside the shell 2 and is also cylindrical in shape. The power system 1 is arranged on the top of the shell 2. It should be noted that the shape of the scraper filter of the utility model is not limited to a cylinder, and can also be other shapes that can be designed by those skilled in the art. Moreover, the shapes of the shell 2 and the filter element 3 are not necessarily the same or similar, as long as they can achieve the functions expressed in this specification.

[0042] The power system 1 mainly includes a reducer and a motor, the motor is connected to the rotating shaft 6, the housing 2 and the filter element 3 are coaxially arranged, the rotating shaft 6 is arranged on the central axis of the two, the rotating shaft 6 is connected to a plurality of scrapers 61, the scrapers 61 are in contact with the inner wall of the filter element 3, after the motor is started, the rotating shaft 6 is driven to rotate and then the scrapers 61 are driven to rotate to scrape and clean the inner wall of the filter element 3.

[0043] In a preferred embodiment, the inner wall of the housing 2 is connected to an axially extending first bracket 4 and a second bracket 5, and the top and bottom of the filter element 3 are respectively connected to the first bracket 4 and the second bracket 5, so that the top and bottom of the filter element 3 are respectively fixed.

[0044] Furthermore, a connecting frame is provided on the top of the filter element 3 , and the connecting frame and the first bracket 4 are in contact with each other and fixed by a plurality of bolts to ensure the stability of the filter element 3 .

[0045] Furthermore, the second bracket 5 is provided with a connecting portion 51 and a receiving portion 52 from the outside to the inside, and the upper surface of the receiving portion 52 is arranged lower than the connecting portion 51. A mounting groove is formed between the receiving portion 52 and the connecting portion 51. The bottom of the filter element 3 is embedded in the mounting groove, and the side wall of the filter element 3 is fitted with the surrounding wall of the mounting groove. The embedded fixing method is adopted to facilitate installation and maintenance.

[0046] like Figure 1 As shown, the housing 2 is provided with an inlet 21, an outlet 22 and a drain outlet 23. The inlet 21 is located higher than the upper surface of the filter element 3, the outlet 22 is located higher than and close to the lower surface of the filter element 3, an impurity collecting chamber 25 is provided below the filter element 3, and the drain outlet 23 is provided at the bottom of the impurity collecting chamber 25.

[0047] The liquid flows in from the inlet 21, then flows outward along the filter element 3, impurities are trapped on the inner surface of the filter element 3, and the filtered liquid flows out from the outlet 22. As time goes by, during the filtering process, dirt and impurities in the water gradually accumulate in the filter element 3, forming a filtered impurity layer. Since the impurity layer accumulates on the inner side of the filter element 3, a pressure difference is formed on the inner and outer sides of the filter element 3.

[0048] When the pressure difference of the filter reaches the preset value, the automatic cleaning process will start, the flushing port 24 set on the top of the housing 2 will open, the cleaning liquid will enter the filter, the power system 1 will drive the shaft 6 to rotate, and further drive the scraper 61 close to the inner surface of the filter element 3 to rotate, scraping off the impurities on the inner surface of the filter element 3, and the impurities will leave the inner surface of the filter element 3 and fall into the impurity collection chamber 25 at the bottom of the filter with the descending cleaning liquid. The drain valve will open according to the set program to discharge the impurities, and the drain valve and flushing port 24 will be closed at the end of cleaning. Further, a stirring device 8 is provided in the impurity collection chamber 25, which is connected to the shaft 6. During the cleaning process, the stirring device 8 rotates to stir the liquid mixed with impurities to prevent the drain port 23 from being blocked.

[0049] In a preferred embodiment, a fixing assembly 7 is provided between the housing 2 and the side wall of the filter element 3, and is provided between the first bracket 4 and the second bracket 5, preferably close to the second bracket 5. When the bottom of the filter element 3 is not completely fixed and the liquid level inside the filter is low, the filter element 3 will be displaced under the action of the pressure difference, and the filter element 3 will be deformed or even damaged during the rotation of the intermediate brush, thereby affecting the use of the filter. The fixing assembly 7 provided between the housing 2 and the filter element 3 can provide additional support for the filter element 3 to avoid displacement.

[0050] In a preferred embodiment, the fixing component 7 is connected to the second bracket 5. The fixing component 7 can be independently provided and fixedly connected to the second bracket 5 by gluing, snapping, screws, etc., or can be integrally formed with the second bracket 5. Further, the fixing component 7 is provided above the connecting portion 51, and its side wall is flush with the peripheral wall of the mounting groove for easy installation.

[0051] Furthermore, the fixing assembly 7 is arranged around the filter element 3, and its cross section is C-shaped, and a cavity 71 is provided in the middle of one side close to the connecting portion 51, and the supporting walls at both ends of the cavity 71 are connected to the connecting portion 51. The arrangement of the cavity 71 can play a buffering and energy absorbing role on the one hand, and can also reduce the use of materials and reduce the manufacturing cost on the other hand.

[0052] In a preferred embodiment, a chamfer 72 is provided at the top of one side of the fixing assembly 7 close to the filter element 3 to form a guiding function, thereby facilitating the installation and debugging of the filter element 3 .

[0053] Furthermore, the bottom of the chamfer 72 is higher than the upper surface of the cavity 71 , so that the support wall of the fixing assembly 7 close to the filter element 3 is subjected to more balanced force, thereby preventing the fixing assembly 7 from being broken.

[0054] In a preferred embodiment, the fixing component 7 can be made of an elastic material, such as rubber, which can provide good shock absorption and energy absorption effects, and is durable and corrosion resistant. Furthermore, the fixing component 7 is made of an elastic material, which is convenient for forming an interference fit with the filter element 3, and the combination is tighter, which helps the sealing effect of the filter element 3 and prevents impurities in the raw liquid from entering the clear liquid through the gap.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0056] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. A scraper filter, comprising a housing and a filter element, wherein the inner wall of the housing is connected to a first bracket and a second bracket extending axially, and the top and bottom of the filter element are respectively connected to the first bracket and the second bracket, characterized in that: A fixing component is arranged between the housing and the filter element; The second bracket is provided with a connecting portion and a receiving portion from the outside to the inside, respectively. The upper surface of the receiving portion is arranged lower than the connecting portion. A mounting groove is formed between the receiving portion and the connecting portion. The bottom of the filter element is embedded in the mounting groove. The side wall of the filter element is fitted with the peripheral wall of the mounting groove. The fixing assembly is arranged above the connecting portion, and its side wall is flush with the peripheral wall of the mounting groove. The cross section of the fixing component is C-shaped, and a cavity is provided in the middle of one side close to the connecting portion, and the supporting walls at both ends of the cavity are connected to the connecting portion.

2. The scraper filter according to claim 1, characterized in that: The fixing assembly is arranged between the first bracket and the second bracket.

3. The scraper filter according to claim 2, characterized in that: The fixing assembly is arranged close to the second bracket.

4. The scraper filter according to claim 3, characterized in that: The fixing assembly is connected to the second bracket.

5. The scraper filter according to claim 4, characterized in that: The fixing assembly and the second bracket are integrally formed.

6. The scraper filter according to claim 1, characterized in that: A chamfer is arranged on the top of one side of the fixing component close to the filter element.

7. The scraper filter according to claim 6, characterized in that: The bottom of the chamfer is higher than the upper surface of the cavity.

8. The scraper filter according to claim 1, characterized in that: The fixing component is made of elastic material.

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