Filter with metal filter membrane backwashing function

Abstract

The utility model discloses a filter with a metal filter membrane backwashing function, which belongs to the technical field of metal filter membranes and comprises a shell, a support is fixedly mounted between the inner walls of the shell and close to the bottom of the shell, a rotating rod is rotatably connected to the center of the upper portion of the support, and the rotating rod is movably connected with the inner walls of the shell. Two backwashing mechanisms are symmetrically arranged on the outer wall of the rotating rod, and each backwashing mechanism comprises a supporting arm. According to the filter with the metal filter membrane backwashing function, the backwashing mechanisms are arranged, a rotating rod drives the two backwashing mechanisms on the outer wall of the rotating rod to rotate, two scraping plates are attached to the inner wall of a filter screen to rotate so as to scrape off impurities adsorbed on the inner wall of the filter screen, and the impurities can be gathered at a sewage draining exit under the action of gravity and discharged; according to the filter, the filter screen can be efficiently and comprehensively cleaned, the filter rate and effect are prevented from being affected by blockage of the filter screen, it is guaranteed that fluid flowing out of the filter is always kept high in purity, and various scene requirements with the high requirement for the fluid purity are met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to metal filter membrane technical field, concretely is a kind of filter with metal filter membrane backwash function. BACKGROUND

[0002] In industrial production and many application scenarios, there is a high requirement for the purity of fluid, and the filter plays a crucial role in ensuring the purity of fluid. Although the traditional filter can effectively intercept impurities in the fluid at the initial stage, as the use time increases, the filter screen faces various impurities filtering tasks for a long time, and the impurities gradually accumulate on the filter screen, causing the pores of the filter screen to be blocked. Once the filter screen is blocked, a series of adverse effects will occur. First, the filtering efficiency will decrease significantly. The fluid that can pass through the filter screen quickly will become slow due to the obstruction of the blockage, and the amount of filtered fluid per unit time will decrease significantly. Second, the purity of the fluid cannot be guaranteed. Because the blocked filter screen cannot effectively intercept new incoming impurities, the impurities are mixed into the filtered fluid, affecting the filtering effect. SUMMARY

[0003] To overcome the above-mentioned defects, the utility model provides a filter with metal filter membrane backwash function, which solves the problem that the filter screen of the traditional filter faces various impurities filtering tasks for a long time, and the impurities gradually accumulate on the filter screen, causing the pores of the filter screen to be blocked, resulting in a significant decrease in filtering efficiency, and the purity of the fluid cannot be guaranteed, affecting the filtering effect.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a filter with metal filter membrane backwash function, comprising a shell, a support is fixedly installed between the inner walls of the shell near the bottom, a rotating shaft is rotatably connected above the support at the center position, two backwash mechanisms are symmetrically provided on the outer wall of the rotating shaft, the backwash mechanism comprises a support arm, the number of support arms is two and they are fixedly installed on the outer wall of the rotating shaft, a connecting arm is slidably connected to the end of the support arm, the support arm is sleeved on the outside of the connecting arm, an empty slot is formed at the opposite end of the support arm and the connecting arm, two limiting columns are fixedly installed in the empty slot at the opposite end of the support arm and the connecting arm, a compression spring is sleeved outside the two limiting columns, and a scraper is fixedly connected to the end of the adjacent connecting arm.

[0005] As a further scheme of the utility model: a filter screen is fixedly installed above the support, a plurality of filter holes are formed in the outer wall of the filter screen, and two scrapers are attached to the inner wall of the filter screen.

[0006] As a further embodiment of this utility model: a fixing frame is fixedly installed on the top of the housing, and an output motor is fixedly installed on the housing through the fixing frame. The output end of the output motor is connected to the top end of the rotating rod.

[0007] As a further embodiment of this utility model: the outer wall of the shell is provided with a water inlet near its top and a water outlet near its bottom, the water inlet and the water outlet are oriented in opposite directions, and a differential pressure regulator is fixedly installed on the outer wall of the shell.

[0008] As a further embodiment of this utility model: the bottom of the shell is designed with an inclination, the inclination direction is towards its center position, and a drain port is provided at the center position of the bottom of the shell.

[0009] As a further embodiment of this utility model: four support frames are fixedly installed at the bottom of the shell, and the four support frames are distributed at four equal division points of the shell.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. This filter with metal membrane backwashing function, through the setting of a backwashing mechanism, when backwashing is required, the output motor drives the rotating rod to rotate, which in turn drives the two backwashing mechanisms on its outer wall to rotate. The two scrapers are respectively attached to the inner wall of the filter screen and rotate to scrape off the impurities adsorbed on the inner wall of the filter screen. Water is injected through the inlet, and the impurities will be carried by the water flow under the action of gravity to collect at the drain outlet and be discharged through the drain outlet. In this way, the filter screen can be cleaned efficiently and comprehensively, avoiding filter screen clogging that affects the filtration rate and effect, and ensuring that the fluid flowing out of the filter always maintains a high purity, meeting the needs of various industrial production or other application scenarios with high requirements for fluid purity.

[0012] 2. This filter with metal membrane backwashing function, through the setting of support arm, connecting arm and compression spring, allows the scraper to adhere to the inner wall of the filter screen during backwashing. The scraper is squeezed by the filter screen, causing the connecting arm to slide on the inner wall of the support arm. During the sliding process of the connecting arm, the compression spring in the slot is squeezed. The reaction force of the compression spring causes the connecting arm to drive the scraper to adhere to the inner wall of the filter screen. In this way, the scraper can adapt to the unevenness of the filter screen surface, ensuring that the scraper always adheres tightly to the inner wall of the filter screen to effectively scrape off impurities. At the same time, it can avoid the scraper from excessively squeezing the filter screen and causing damage, thereby improving the backwashing effect and extending the service life of the filter screen. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2The structure schematic view of the shell cutting of the utility model is shown in the figure.

[0015] Figure 3 The structure schematic view of the connection of the rotating rod and the backwashing mechanism of the utility model is shown in the figure.

[0016] Figure 4 The structure schematic view of the utility model Figure 3 The structure schematic view of the enlarged A place in the middle is shown in the figure.

[0017] In the figure: 1, shell; 2, support; 3, rotating rod; 4, backwashing mechanism; 401, support arm; 402, connecting arm; 403, hollow groove; 404, limiting column; 405, compression spring; 406, scraper; 5, filter screen; 6, filter hole; 7, fixed frame; 8, output motor; 9, water inlet; 10, water outlet; 11, differential pressure regulator; 12, blowdown; 13, support frame. Specific implementation

[0018] The technical scheme of the patent will be further described in detail in combination with specific implementation.

[0019] For example Figures 1-4The utility model provides a technical scheme: a filter with metal filter membrane backwashing function, including casing 1, the position of casing 1's inner wall between near its bottom is fixedly installed with support 2, the upper portion of support 2 is located the central position rotationally connected with the rotating rod 3, the outer wall of rotating rod 3 is equipped with two backwashing mechanisms 4 symmetrically, backwashing mechanism 4 includes support arm 401, the number of support arm 401 is two and is fixedly installed on the outer wall of rotating rod 3, the end of support arm 401 is slidably connected with connecting arm 402, support arm 401 is sleeved in connecting arm 402, the opposite end of support arm 401 and connecting arm 402 is all set with empty slot 403, two limit posts 404 are fixedly installed in empty slot 403 and located the opposite end of support arm 401 and connecting arm 402 respectively, because of being equipped with limit post 404, limit post 404 can avoid the situation that compression spring 405 is displaced when being extruded, two limit posts 404 are sleeved with compression spring 405, because of being equipped with compression spring 405, scraper 406 is driven connecting arm 402 to contract in support arm 401 when being extruded in the inner wall of filter screen 5, extruding compression spring 405 in the contraction process, compression spring 405 contracts and rebounds to make connecting arm 402 drive scraper 406 adhere to the inner wall of filter screen 5, make scraper 406 adhere to the inner wall of filter screen 5 simultaneously, and also can adapt the unevenness of the surface of filter screen 5 through the elasticity of compression spring 405, guarantee the effect of scraper 406 when cleaning, the end of adjacent two connecting arms 402 is fixedly connected with scraper 406, because of being equipped with scraper 406, output motor 8 drives rotating rod 3 to rotate, and rotating rod 3 drives support arm 401 and connecting arm 402 to rotate and further drive scraper 406 to adhere to the inner wall of filter screen 5 and rotate, the impurities adhered on the inner wall of filter screen 5 can be scraped off along with the rotation of scraper 406 along the inner wall of filter screen 5, avoid the effect of impurities adsorbed on the inner wall of filter screen 5 on filtration, the upper portion of support 2 is fixedly installed with filter screen 5, and the outer wall of filter screen 5 is provided with a plurality of filter holes 6, and two scrapers 406 adhere to the inner wall of filter screen 5;

[0020] The top of the shell 1 is fixedly provided with a fixing frame 7, the shell 1 is fixedly provided with an output motor 8 through the fixing frame 7, the output end of the output motor 8 is connected with the top end of the rotating rod 3, the outer wall of the shell 1 is provided with a water inlet 9 near the top thereof, the outer wall of the shell 1 is provided with a water outlet 10 near the bottom thereof, the water inlet 9 and the water outlet 10 are opposite to each other in direction, the outer wall of the shell 1 is fixedly provided with a differential pressure regulator 11, the differential pressure regulator 11 can monitor the pressure difference in the shell 1 in real time due to the provision of a differential pressure sensor, the clogging condition of the filter screen 5 can be known in time through the monitoring of the pressure difference, so that the timing of backwashing can be reasonably arranged, and meanwhile, the filtering process can be ensured to be carried out under suitable pressure conditions, thereby avoiding the adverse effects of excessively high or low pressure on the filtering effect and equipment, the bottom of the shell 1 is designed to be inclined, the inclined direction is towards the central position of the shell 1, the central position of the bottom of the shell 1 is provided with a blowdown port 12, the inclined bottom design is beneficial to the collection of the impurities scraped by the scraper 406 under the action of gravity towards the central position of the bottom of the shell 1 during backwashing, the impurities are discharged out of the shell 1, and the residual impurities in the shell 1 are avoided, the bottom of the shell 1 is fixedly provided with four supporting frames 13, and the four supporting frames 13 are distributed at the four quarter points of the shell 1.

[0021] The working principle of the utility model is as follows: when the filter starts to work, fluid enters the shell 1 from the water inlet 9, the fluid starts to flow downwards under the action of gravity, the fluid flows into the filter screen 5, the filter screen 5 plays a filtering role, the impurities are blocked by the filter screen 5, and the filtered fluid passes through the filter hole 6 and flows to the water outlet 10 and finally flows out of the shell 1 from the water outlet 10 near the bottom of the outer wall of the shell 1, when backwashing is needed, the output motor 8 on the top fixing frame 7 of the shell 1 starts to work, the output motor 8 drives the rotating rod 3 to rotate, along with the rotation of the rotating rod 3, the rotating rod 3 drives the backwashing mechanism 4 to rotate, the scraper 406 adheres to the inner wall of the filter screen 5 and is extruded by the filter screen 5, drives the connecting arm 402 to shrink in the inner wall of the supporting arm 401, the compression spring 405 is extruded and rebounds in the shrinking process, under the action of the compression spring 405, the scraper 406 can adhere to the inner wall of the filter screen 5 and also can well exert pressure, the scraper 406 rotates in the inner wall of the filter screen 5, scrapes the impurities adhered to the inner wall of the filter screen 5, the scraped impurities will gather towards the central position of the bottom of the shell 1 under the action of gravity, the water source for flushing is injected through the water inlet 9, and the stains will finally be discharged through the blowdown port 12 along with the water flow.

[0022] In the description of the utility model, it is necessary to explain that, unless another explicit provision and limitation, the term "installation", "connection", "connect" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication.For ordinary skilled in the art, the above-mentioned terms can be understood by the specific meaning in the utility model through the specific circumstances.

[0023] The above-mentioned preferred embodiments of the patent are described in detail, but the patent is not limited to the above-mentioned embodiments, within the knowledge range possessed by ordinary skilled in the art, various changes can be made without departing from the purpose of the patent.

Claims

1. A filter with metal filter membrane backwashing function, comprising a shell (1), characterized in that: The inner wall of the shell (1) is fixedly installed with a support (2) near the bottom thereof, the upper portion of the support (2) is rotationally connected with a rotating rod (3) at the center thereof, the outer wall of the rotating rod (3) is symmetrically provided with two backwashing mechanisms (4), the backwashing mechanism (4) comprises a supporting arm (401), the number of the supporting arm (401) is two and the supporting arm (401) is fixedly installed on the outer wall of the rotating rod (3), the end portion of the supporting arm (401) is slidingly connected with a connecting arm (402), the supporting arm (401) is sleeved on the connecting arm (402), the opposite end of the supporting arm (401) and the connecting arm (402) is provided with an empty slot (403), two limiting columns (404) are fixedly installed in the empty slot (403) at the opposite end of the supporting arm (401) and the connecting arm (402), a compression spring (405) is sleeved on the two limiting columns (404), and the end portions of the adjacent two connecting arms (402) are fixedly connected with a scraper (406).

2. The filter with the metal filter membrane backwashing function according to claim 1, characterized in that: The upper portion of the support (2) is fixedly installed with a filter screen (5), a plurality of filter holes (6) are formed in the outer wall of the filter screen (5), and the two scrapers (406) are attached to the inner wall of the filter screen (5).

3. The filter with the metal filter membrane backwashing function according to claim 1, characterized in that: The top of the shell (1) is fixedly installed with a fixing frame (7), the shell (1) is fixedly installed with an output motor (8) through the fixing frame (7), and the output end of the output motor (8) is connected with the top end of the rotating rod (3).

4. The filter with the metal filter membrane backwashing function according to claim 1, characterized in that: The outer wall of the shell (1) is provided with a water inlet (9) near the top thereof, the outer wall of the shell (1) is provided with a water outlet (10) near the bottom thereof, the directions of the water inlet (9) and the water outlet (10) are opposite, and the outer wall of the shell (1) is fixedly installed with a differential pressure regulator (11).

5. The filter with the metal filter membrane backwashing function according to claim 1, characterized in that: The bottom of the shell (1) is designed to be inclined, and the inclined direction is towards the center thereof, and the center of the bottom of the shell (1) is provided with a sewage outlet (12).

6. The filter with the metal filter membrane backwashing function according to claim 1, characterized in that: The bottom of the shell (1) is fixedly installed with four supporting frames (13), and the four supporting frames (13) are distributed at the four quarter points of the shell (1).

Images