Sewage filtering device

Abstract

The sewage filtering device comprises a filtering main body, and a water inlet and a water outlet are formed in the side wall of the filtering main body; the partition plate is arranged in the inner cavity of the filtering main body and divides the inner cavity of the filtering main body into a water inlet chamber and a water outlet chamber, the partition plate is provided with a mounting through hole, and the water inlet chamber is communicated with the water outlet chamber through the mounting through hole; the filter screen is arranged in the mounting through hole in a penetrating manner; the first pressure transmitter is arranged on the outer wall of the filtering main body and is communicated with the water inlet cavity, and the second pressure transmitter is arranged on the outer wall of the filtering main body and is communicated with the water outlet cavity.

Description

Technical Field

[0001] The present application relates to the technical field of sewage pipeline engineering, and in particular to a sewage filtering device. Background Art

[0002] In the pharmaceutical field, sewage purification processes usually use high temperature and high pressure or chemical methods to purify sewage to ensure that environmental discharge requirements are met. Prior to this, in order to avoid blockage of the waste liquid inactivation system, a pre-filter device needs to be installed in the water inlet pipe of the waste liquid inactivation system to filter out large particles of impurities in the biological wastewater.

[0003] However, in the related art, the filter of the pre-filter device is installed inside the shell, and the staff cannot observe and grasp the degree of blockage of the filter in time, which may easily cause the filter to be seriously blocked and cause excessive pressure in the front-end pipeline system, causing damage to the pipeline system and even causing safety accidents. Summary of the invention

[0004] Based on this, it is necessary to provide a sewage filtering device to address the problem that the filter screen in the prior art is seriously clogged, causing damage to the pipeline system and even causing safety accidents.

[0005] The present application provides a sewage filtering device, which comprises:

[0006] A filter body, wherein a water inlet and a water outlet are respectively provided on the side walls of the filter body;

[0007] A partition, the partition is arranged in the inner cavity of the filter body and divides the inner cavity of the filter body into a water inlet chamber and a water outlet chamber, the partition is provided with a mounting through hole, and the mounting through hole connects the water inlet chamber with the water outlet chamber;

[0008] A filter screen, the filter screen being inserted into the installation through hole; and

[0009] A first pressure transmitter and a second pressure transmitter, wherein the first pressure transmitter is disposed on the outer wall of the filter body and communicated with the water inlet chamber, and the second pressure transmitter is disposed on the outer wall of the filter body and communicated with the water outlet chamber.

[0010] When the sewage filtering device of the present scheme is working, the sewage flows from the water inlet into the water inlet chamber in the filter body, and then flows through the filter screen preset in the installation through hole. The large particles of impurities in the sewage are filtered and blocked by the filter screen. Then the sewage flows into the water outlet chamber and finally discharged from the filter body from the water outlet. As the sewage flowing through the filter body continues to increase, the impurities filtered and accumulated on the inner wall of the filter screen also continue to increase. At the same time, the first pressure transmitter and the second pressure transmitter detect the pressure at the front and rear ends of the filter screen (that is, the water inlet chamber and the water outlet chamber) in real time. When the filter screen is seriously blocked, making it difficult for the sewage to pass through the filter screen, the pressure difference detected by the first pressure transmitter and the second pressure transmitter will exceed the set value. At this time, the first pressure transmitter and the second pressure transmitter will promptly feedback the signal to the controller, thereby reminding the staff to remove the filter screen in time for cleaning through the controller. In this way, the problem of excessive pressure in the front section of the pipeline caused by serious blockage of the filter screen can be effectively solved, the pipeline can be avoided from being damaged, and potential safety hazards can be eliminated.

[0011] The technical solution of this application is further described below:

[0012] In one embodiment, the filter includes an annular carrier plate and a filter body, the filter body is arranged on the annular carrier plate and penetrates into the mounting through hole, the diameter of the annular carrier plate is larger than the aperture of the mounting through hole, so that the annular carrier plate is buckled and fixed to the partition.

[0013] In one embodiment, the filter screen further comprises a handle, and the handle is disposed on a side of the annular carrier plate facing away from the filter screen body.

[0014] In one embodiment, the sewage filtering device further includes a cover plate and a pressure plate, wherein the cover plate is arranged at the upper end opening of the filter body, one end of the pressure plate is arranged on the inner side wall of the cover plate, and the other end of the pressure plate abuts against the inner side wall of the filter body.

[0015] In one embodiment, the sewage filtering device also includes a first rotating shaft bracket, a first rotating shaft and a first rotating shaft seat, the first rotating shaft bracket is fixed to the outer periphery of the cover plate and is connected to the first rotating shaft, the first rotating shaft seat is arranged on the outer wall of the filter body, and the first rotating shaft is rotatably connected to the first rotating shaft seat, so that the cover plate can rotate relative to the filter body to open or close the upper end opening of the filter body.

[0016] In one of the embodiments, the sewage filtering device also includes a locking mechanism, which connects the cover plate to the filter body, and the locking mechanism has a locked state and an unlocked state. In the locked state, the cover plate seals the upper end opening of the filter body; in the unlocked state, the cover plate opens the upper end opening of the filter body.

[0017] In one embodiment, the locking mechanism includes a second rotating shaft, a second rotating shaft seat, a screw, a nut and a locking block. A hook is provided on the edge of the cover plate. The second rotating shaft seat is arranged on the outer wall of the filter body. The second rotating shaft is rotatably connected to the second rotating shaft seat. One end of the screw is fixed to the second rotating shaft. The locking block and the nut are sequentially sleeved on the outside of the screw. The locking block can be engaged with or separated from the hook.

[0018] In one of the embodiments, the sewage filtering device further includes a handle, and the handle is disposed on the outer side wall of the cover plate.

[0019] In one of the embodiments, the cover plate is provided with a window, and the sewage filtering device further comprises a viewing mirror assembly, wherein the viewing mirror assembly is installed at the window so that the filter screen installed in the filtering body can be seen from the outside.

[0020] In one embodiment, a low-point discharge port is provided at a side wall portion of the filter body close to the bottom; or / and, a sewage outlet is provided at the bottom wall of the filter body, and a sewage valve is installed at the sewage outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] FIG1 is a schematic structural diagram of a sewage filtering device according to an embodiment of the present application.

[0024] FIG. 2 is a vertical cross-sectional structural diagram of the sewage filtering device in FIG. 1 .

[0025] Figure 3 Schematic diagram of the structure of a filter screen according to an embodiment.

[0026] Description of reference numerals:

[0027] 100. Sewage filtering device; 10. Filter body; 11. Water inlet; 12. Water outlet; 13. Water inlet chamber; 14. Water outlet chamber; 15. Low-point discharge port; 16. Drain valve; 20. Partition; 21. Mounting through hole; 30. Filter; 31. Annular carrier plate; 32. Filter body; 33. Handle; 40. First pressure transmitter; 50. Second pressure transmitter; 60. Cover plate; 61. Hook; 62. Window; 70. Press plate; 80. First rotating shaft bracket; 80a. First rotating shaft; 80b. First rotating shaft seat; 90. Locking mechanism; 91. Second rotating shaft; 92. Second rotating shaft seat; 93. Screw; 94. Nut; 95. Locking block; 90a. Handle; 90b. Mirror assembly. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0029] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0030] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0032] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0034] Referring to FIG. 1 , a sewage filter device 100 is shown in an embodiment of the present application. When in use, the sewage filter device 100 is installed in a sewage pipe and upstream of a waste liquid fire extinguishing system, and works as a pre-filter of the waste liquid fire extinguishing system to filter out large particles of impurities in the sewage to prevent the large particles of impurities from flowing into the waste liquid fire extinguishing system and causing blockage.

[0035] Please continue to refer to FIG. 1 and FIG. 2 . By way of example, the sewage filtering device 100 includes a filtering body 10 , a partition plate 20 , a filter screen 30 , a first pressure transmitter 40 , and a second pressure transmitter 50 .

[0036] The filter body 10 is a cylindrical structure with an open upper end, and can be made of materials such as stainless steel plates. It has the advantages of simple structure, high strength, and long service life.

[0037] The side walls of the filter body 10 are provided with a water inlet 11 and a water outlet 12. Specifically, the water inlet 11 and the water outlet 12 are located on opposite sides of the filter body 10, so that it is easier to simplify the flow path of the sewage in the filter body 10, so that the sewage can flow into and out of the filter body 10 more smoothly, thereby improving the sewage filtering efficiency.

[0038] In addition, the partition 20 is arranged in the inner cavity of the filter body 10, and divides the inner cavity of the filter body 10 into a water inlet chamber 13 and a water outlet chamber 14. The partition 20 is provided with a mounting through hole 21, and the mounting through hole 21 connects the water inlet chamber 13 with the water outlet chamber 14; the filter screen 30 is passed through the mounting through hole 21; the first pressure transmitter 40 is arranged on the outer wall of the filter body 10 and is connected to the water inlet chamber 13, and the second pressure transmitter 50 is arranged on the outer wall of the filter body 10 and is connected to the water outlet chamber 14.

[0039] It can be understood that the purpose of the upper opening of the filter body 10 is to facilitate the installation of the filter screen 30 into the inner cavity of the filter body 10 or the removal of the filter screen 30 from the inner cavity of the filter body 10 .

[0040] In summary, the implementation of the technical solution of this embodiment will have the following beneficial effects: when the sewage filtering device 100 of this solution is working, the sewage flows from the water inlet 11 into the water inlet chamber 13 in the filter body 10, and then flows through the filter screen 30 preset in the installation through hole 21. The large particles of impurities in the sewage are filtered and blocked by the filter screen 30. Then the sewage flows into the water outlet chamber 14 and finally discharges the filter body 10 from the water outlet 12. As the sewage flowing through the filter body 10 increases, the impurities filtered and accumulated on the inner wall of the filter screen 30 also increase. At the same time, the first pressure transmitter 40 and the second pressure transmitter 50 detect the filter screen 3 in real time. 0. When the filter screen 30 is seriously clogged, making it difficult for sewage to pass through the filter screen 30, the pressure difference detected by the first pressure transmitter 40 and the second pressure transmitter 50 will exceed the set value. At this time, the first pressure transmitter 40 and the second pressure transmitter 50 will promptly feedback signals to the controller, thereby reminding the staff to remove the filter screen 30 for cleaning in time through the controller. In this way, the problem of excessive pressure in the front section of the pipeline caused by serious blockage of the filter screen 30 can be effectively solved, the pipeline can be avoided from being damaged, and potential safety hazards can be eliminated.

[0041] Please continue to refer to Figures 2 and Figure 3 In one embodiment, the filter 30 includes an annular carrier plate 31 and a filter body 32. The filter body 32 is disposed on the annular carrier plate 31 and penetrates into the mounting through hole 21. The diameter of the annular carrier plate 31 is larger than the aperture of the mounting through hole 21, so that the annular carrier plate 31 is buckled and fixed to the partition 20.

[0042] Specifically, the filter body 32 is a cylindrical tube with one end open, and the annular outer plate is welded and fixed to the outer periphery of the open end of the filter body 32, so that the annular carrier plate 31 forms a structure similar to a flange. In this way, when the filter body 32 is aligned and inserted into the installation through hole 21, the annular carrier plate 31 can be buckled and pressed on the surface of the partition 20 to form the installation positioning of the filter 30. The installation method is simple and has good stability. When disassembling, it only needs to be pulled upward to remove it from the partition 20, which is convenient and labor-saving.

[0043] It can be understood that the circumferential surface and the bottom surface of the filter body 32 are provided with a plurality of filter holes arranged in an array, so that the filter body 32 can obtain a larger filtering area, increase the amount of sewage flowing through the filter body 32 per unit time, and obtain a higher filtering efficiency.

[0044] Furthermore, the filter 30 further includes a handle 33, which is disposed on a side of the annular carrier plate 31 away from the filter body 32. The handle 33 serves as a gripping portion, which facilitates the staff to place the filter 30 downward or lift the filter 30 upward, thereby improving the convenience of installing and removing the filter 30.

[0045] Please continue to refer to Figures 1 and 2. In addition, in another embodiment, the sewage filtering device 100 further includes a cover plate 60 and a pressing plate 70. The cover plate 60 is disposed at the upper end opening of the filtering body 10. One end of the pressing plate 70 is disposed at the inner side wall of the cover plate 60, and the other end of the pressing plate 70 abuts against the inner side wall of the filter body 32. When the cover plate 60 is covered to the upper end opening of the filtering body 10, the end of the pressing plate 70 away from the cover plate 60 just abuts against the inner wall of the filter body 32 under the action of the gravity of the cover plate 60, so that the filter 30 can be further pressed and fixed on the partition 20, thereby improving the installation stability of the filter 30.

[0046] Preferably, a spring is installed at the end of the pressure plate 70 away from the cover plate 60, and the spring is connected to a pressure block. The pressure block is elastically pressed against the inner wall of the filter body 32 with the help of the elastic thrust of the spring. This can ensure that the filter 30 is reliably pressed while avoiding excessive pressure on the filter 30, which may cause the filter 30 to be deformed and broken.

[0047] On the basis of any of the above embodiments, the sewage filtering device 100 further includes a first rotating shaft bracket 80, a first rotating shaft 80a and a first rotating shaft seat 80b, wherein the first rotating shaft bracket 80 is fixedly arranged on the outer periphery of the cover plate 60 and connected to the first rotating shaft 80a, the first rotating shaft seat 80b is arranged on the outer wall of the filter body 10, and the first rotating shaft 80a is rotatably connected to the first rotating shaft seat 80b, so that the cover plate 60 can rotate relative to the filter body 10 to open or close the upper end opening of the filter body 10. Therefore, the cover plate 60 can conveniently and quickly open or close the upper end opening of the filter body 10 only by rotating, without having to remove the cover plate 60 and its flange as a whole as in the prior art, thereby further reducing the difficulty of installing and disassembling the filter screen 30.

[0048] Please continue to refer to Figures 1 and 2. Further, the sewage filtering device 100 also includes a locking mechanism 90, which connects the cover plate 60 to the filter body 10, and the locking mechanism 90 has a locked state and an unlocked state. In the locked state, the cover plate 60 seals the upper end opening of the filter body 10; in the unlocked state, the cover plate 60 opens the upper end opening of the filter body 10.

[0049] Specifically, in one embodiment, the locking mechanism 90 includes a second rotating shaft 91, a second rotating shaft seat 92, a screw 93, a nut 94 and a locking block 95. A hook 61 is provided on the edge of the cover plate 60. The second rotating shaft seat 92 is arranged on the outer wall of the filter body 10. The second rotating shaft 91 is rotatably connected to the second rotating shaft seat 92. One end of the screw 93 is fixed to the second rotating shaft 91. The locking block 95 and the nut 94 are sequentially sleeved on the outside of the screw 93. The locking block 95 can be engaged or separated with the hook 61.

[0050] When in use, the nut 94 is screwed downward, and the nut 94 pushes the locking block 95 to engage with the hook 61, so that the cover 60 can be locked and fixed on the filter body 10, thereby preventing the cover 60 from being accidentally opened; on the contrary, the nut 94 is screwed upward, and the locking block 95 can also move axially along the screw rod 93, so that the locking block 95 can be separated from the hook 61 to achieve unlocking, and the cover 60 can be flipped to open the upper end opening of the filter body 10, so that the filter screen 30 can be taken out for cleaning, and then the clean filter screen 30 can be put back.

[0051] Furthermore, the sewage filtering device 100 further includes a handle 90a, which is disposed on the outer side wall of the cover plate 60. When the cover plate 60 is unlocked, the handle 90a can be held to flip open the cover plate 60 more conveniently and labor-savingly, and after the filter screen 30 is cleaned and replaced, the cover plate 60 can be flipped down and closed.

[0052] In another embodiment, the cover plate 60 is provided with a window 62, and the sewage filtering device 100 further includes a mirror assembly 90b, which is installed at the window 62 so that the filter 30 installed in the filtering body 10 can be seen from the outside. In this way, the staff can directly observe the blockage of the internal filter 30 through the mirror assembly 90b by visual inspection, which is convenient for judging when the filter 30 needs to be removed for cleaning, so as to avoid serious blockage of the filter 30 and damage to the pipeline.

[0053] For example, the mirror assembly 90b includes a transparent lens, a mirror pressure plate 70 and bolts. The transparent lens is installed at the window 62, and the mirror pressure plate 70 is covered on the top of the transparent lens. The mirror pressure plate 70 is fixed to the cover plate 60 by bolts to press the transparent lens.

[0054] In addition, a low-point discharge port 15 is provided at the side wall of the filter body 10 near the bottom, so as to facilitate the discharge of part of the sewage in the water outlet chamber 14.

[0055] The bottom wall of the filter body 10 is provided with a sewage outlet, and a sewage valve 16 is installed at the sewage outlet. When the sewage valve 16 is opened, all sewage in the filter body 10 can be discharged, so that the inner cavity of the filter body 10 can be cleaned conveniently.

[0056] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A sewage filtering device, characterized in that: include: A filter body, wherein a water inlet and a water outlet are respectively provided on the side walls of the filter body; A partition, the partition is arranged in the inner cavity of the filter body and divides the inner cavity of the filter body into a water inlet chamber and a water outlet chamber, the partition is provided with a mounting through hole, and the mounting through hole connects the water inlet chamber with the water outlet chamber; A filter screen, the filter screen being inserted into the installation through hole; and A first pressure transmitter and a second pressure transmitter, wherein the first pressure transmitter is disposed on the outer wall of the filter body and communicated with the water inlet chamber, and the second pressure transmitter is disposed on the outer wall of the filter body and communicated with the water outlet chamber.

2. The sewage filtering device according to claim 1, characterized in that: The filter screen includes an annular carrier plate and a filter screen body. The filter screen body is arranged on the annular carrier plate and penetrates into the mounting through hole. The diameter of the annular carrier plate is larger than the aperture of the mounting through hole, so that the annular carrier plate is buckled and fixed to the partition.

3. The sewage filtering device according to claim 2, characterized in that: The filter screen further comprises a handle, and the handle is arranged on a side of the annular carrier plate away from the filter screen body.

4. The sewage filtering device according to claim 2, characterized in that: The sewage filtering device further comprises a cover plate and a pressure plate, wherein the cover plate is arranged at the upper end opening of the filtering body, one end of the pressure plate is arranged on the inner side wall of the cover plate, and the other end of the pressure plate abuts against the inner side wall of the filter body.

5. The sewage filtering device according to claim 4, characterized in that: The sewage filtering device also includes a first rotating shaft bracket, a first rotating shaft and a first rotating shaft seat, wherein the first rotating shaft bracket is fixedly arranged on the outer periphery of the cover plate and connected to the first rotating shaft, the first rotating shaft seat is arranged on the outer wall of the filter body, and the first rotating shaft is rotatably connected to the first rotating shaft seat, so that the cover plate can rotate relative to the filter body to open or close the upper end opening of the filter body.

6. The sewage filtering device according to claim 5, characterized in that: The sewage filtering device also includes a locking mechanism, which connects the cover plate to the filter body, and the locking mechanism has a locked state and an unlocked state. In the locked state, the cover plate seals the upper end opening of the filter body; in the unlocked state, the cover plate opens the upper end opening of the filter body.

7. The sewage filtering device according to claim 6, characterized in that: The locking mechanism includes a second rotating shaft, a second rotating shaft seat, a screw, a nut and a locking block. A hook is provided on the edge of the cover plate. The second rotating shaft seat is arranged on the outer wall of the filter body. The second rotating shaft is rotatably connected to the second rotating shaft seat. One end of the screw is fixed to the second rotating shaft. The locking block and the nut are sequentially sleeved on the outside of the screw. The locking block can be engaged with or separated from the hook.

8. The sewage filtering device according to claim 4, characterized in that: The sewage filtering device also includes a handle, which is arranged on the outer side wall of the cover plate.

9. The sewage filtering device according to claim 4, characterized in that: The cover plate is provided with a window, and the sewage filtering device further comprises a viewing mirror assembly, which is installed at the window so that the filter screen installed in the filtering body can be seen from the outside.

10. The sewage filtering device according to claim 1, characterized in that: A low-point discharge port is provided at a side wall portion of the filter body close to the bottom; or / and a sewage outlet is provided at the bottom wall of the filter body, and a sewage valve is installed at the sewage outlet.

Images