Square candle type filter

Abstract

The invention discloses a square candle type filter, and relates to the technical field of filtering equipment, the square candle type filter comprises a filtering tank, a filtering cavity is formed in the filtering tank, the filtering tank is provided with a supporting disc, and a supporting hole is formed in the supporting disc; a water inlet pipe is arranged on the filtering tank; a discharge pipe is arranged at the bottom of the filtering tank; a filter layer is arranged on the peripheral side wall of the filter element; the transmission pipe is provided with a connecting pipe; an air inlet pipe and a water outlet pipe are connected to the flow dividing pipe; the supporting rings are arranged on the peripheral side of the filter element in a sleeving manner and are in one-to-one correspondence, and supporting grooves are formed in the supporting rings; a mounting ring; when airflow enters the filter element, the control assembly controls the mounting ring to slide downwards to be away from the supporting disc; cleaning bristles are arranged on the mounting ring, and when the mounting ring is far away from the supporting disc, the cleaning bristles are in sliding contact with the peripheral side of the filtering layer; and when the air flow stops entering the filter element, the reset assembly drives the supporting ring to slide into the supporting groove. The cleaning effect of the filter cloth can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of filtering equipment, and in particular to a square candle filter. Background Art

[0002] Candle filter is an advanced precision filtration equipment, which has the characteristics of high efficiency and energy saving, airtight and high precision, easy maintenance, safety and reliability, high degree of automation, etc. It is widely used in many industrial fields such as petroleum, plastics, electroplating, chemicals, ceramics, pharmaceuticals, sugar making, etc.

[0003] When using candle filters, they are mainly based on the filtering effect of the filter element and the filter cloth. The porous structure of the filter element and the filter cloth can intercept the solid particles suspended in the liquid, thereby achieving the separation of liquid and solid. As the filtration proceeds, solid particles gradually accumulate on the surface of the filter element to form a filter cake layer. When the slag needs to be removed, air is blown into the filter to pressurize it to remove the moisture in the filter cake layer, so that the filter cake layer solidifies and increases its density. When the filter cake layer reaches a certain thickness, the filter cake layer is removed by backblowing. The backblowing gas flows from the inside of the filter element to the outside, causing the filter cake to fall.

[0004] However, as the filter cake layer solidifies and its density increases, the degree of adhesion between the filter residue and the filter cloth surface increases. During the back-blowing cake removal operation, residues may remain on the outer surface of the filter cloth, affecting the cleaning effect of the filter cloth. Summary of the invention

[0005] In order to improve the cleaning effect of the filter cloth, the present application provides a square candle filter.

[0006] The present application provides a square candle filter, which adopts the following technical solution: A square candle filter, comprising A filter tank, wherein a filter cavity is formed in the filter tank, and the filter tank is provided with a support plate located in the filter cavity, and a plurality of support holes are formed on the support plate at even intervals; The filter tank is provided with a water inlet pipe, and the bottom of the filter tank is provided with a drain pipe; A filter core is arranged on the support plate and plugged into the support hole, the filter core corresponds to the support hole one by one, and a filter layer is arranged on the outer peripheral side wall of the filter core; A transmission pipe is arranged on the outer wall of the filter tank and extends into the filter cavity, and the transmission pipe is provided with a plurality of connecting pipes communicating with one side of the top of the filter element; A shunt pipe, connected to the transmission pipe at a side away from the connecting pipe, the shunt pipe is respectively connected with an air inlet pipe and a water outlet pipe; A support ring is arranged at the bottom of the support plate, the support ring is sleeved on the outer peripheral side of the filter element and corresponds to the filter element one by one, and the support ring is formed with a support groove penetrating downward to the outside; A mounting ring, which is sleeved on the filter element and slidably connected to the support groove up and down; A control component is arranged on the support ring, and when airflow enters the filter element, the control component controls the mounting ring to slide downward away from the support plate; The mounting ring is provided with cleaning bristles, and when the mounting ring is away from the supporting plate, the cleaning bristles are in sliding contact with the outer peripheral side of the filter layer; A reset component is arranged on the support ring. When the airflow stops entering the filter element, the reset component drives the support ring to slide into the support groove.

[0007] By adopting the above technical solution, when it is necessary to discharge the filter residue, first close the outlet pipe and the inlet pipe, then pressurize the filter cake layer to solidify the filter cake layer and increase its density. Then, airflow is introduced through the air inlet pipe so that the airflow flows through the filter element to the filter layer. At this time, the airflow impacts the filter cake layer, causing the filter cake layer to fall. During the process of airflow entering the filter element, the airbag is controlled to expand, driving the mounting ring to move downward. At this time, the cleaning brush cleans the outer wall of the filter layer to reduce the residue on the filter layer and improve the cleaning effect of the filter layer.

[0008] Optionally, the control component includes a control airbag and a connecting air tube; The control airbag surrounds the filter element, the control airbag is arranged in the support groove, one end of the control airbag is connected to the bottom of the mounting ring, and the other end is connected to the groove wall of the support groove away from the groove opening; The communicating air pipe is passed through the supporting ring, one end of the communicating air pipe is connected to the control air bag, and the other end is connected to the connecting pipe.

[0009] By adopting the above technical solution, the control airbag is arranged around the filter element and is connected to the connecting pipe through the connecting air pipe. When the airflow enters through the connecting pipe, the control airbag expands and pushes the mounting ring to slide downward. This technical solution makes the operation of the control component clearer and more reliable, and improves the stability and efficiency of the automatic cleaning function.

[0010] Optionally, the reset assembly includes a reset rope, a reset shaft and a reset coil spring; The reset shaft is rotatably connected to the support ring, the reset coil spring is wound around the outer circumference of the reset shaft, one end of the reset coil spring is clamped to the reset shaft, and the other end is clamped to the support ring; The reset rope is wound around the reset shaft, one end of the reset rope is connected to the reset shaft, and the other end is connected to the mounting ring.

[0011] By adopting the above technical solution, by introducing a reset component, the reset component includes a reset rope, a reset shaft and a reset coil spring structure, and the automatic reset function of the mounting ring is realized. When the airflow stops entering the filter element, the reset component drives the mounting ring to slide into the support groove to prepare for the next cleaning process. This technical solution enhances the automation of the filter, reduces manual intervention, and improves work efficiency.

[0012] Optionally, the mounting ring comprises an upper ring and a lower ring, and the lower ring is rotatably connected to a side of the upper ring away from the support plate; The upper ring is connected to a plurality of rollers for rotation in the circumferential direction, and the rollers are connected to the outer peripheral side of the filter layer for rolling up and down; The upper ring is provided with a transmission assembly, and when the roller rolls, the transmission assembly drives the lower ring to rotate.

[0013] By adopting the above technical solution, the design of the mounting ring includes an upper ring and a lower ring, the lower ring is rotatably connected to the upper ring, and the introduction of the roller and the transmission assembly enables the cleaning bristles to contact the filter layer more evenly during the cleaning process, thereby improving the cleaning effect. At the same time, the roller is rotatably connected to the outer peripheral side of the filter layer, reducing the friction resistance during the cleaning process and extending the service life of the cleaning bristles and the filter layer.

[0014] Optionally, the transmission assembly includes a transmission bevel gear, a transmission rack, a connecting bevel gear and a power gear; The upper ring is rotatably connected to a rotating shaft, the roller is arranged on the outer peripheral side of the rotating shaft, and the transmission bevel gear is arranged on the outer peripheral side of the rotating shaft and rotatably connected to the upper ring; The upper ring is rotatably connected to a connecting shaft, the connecting bevel gear is disposed on the connecting shaft and rotatably connected to the upper ring, and the connecting bevel gear is meshed with the transmission bevel gear; The transmission rack is connected end to end and is arranged on the top of the lower ring, the power gear is arranged on the outer peripheral side of the connecting shaft, and the transmission rack is meshed with the connecting bevel gear.

[0015] By adopting the above technical solution, the transmission assembly includes a transmission bevel gear, a power gear, a connecting bevel gear and a transmission rack, and the function of driving the lower ring to rotate when the roller rolls is realized. The technical solution makes the transmission between the roller and the lower ring more stable and reliable, and improves the continuity and stability of the cleaning process.

[0016] Optionally, the inner peripheral side wall of the lower ring is formed with a plurality of accommodating grooves evenly spaced along the circumferential direction, and the lower ring is provided with a bearing plate sliding in the accommodating grooves; The cleaning brush bristles are arranged on a side of the bearing plate close to the filter core, and the lower ring is provided with a driving spring for driving the bearing plate close to the filter core.

[0017] By adopting the above technical solution, the inner side wall of the lower ring is designed to form multiple receiving grooves evenly spaced along the circumferential direction, and the support plate and cleaning bristles are arranged, so that the filter layer can be cleaned more carefully. At the same time, the introduction of the driving spring enables the support plate to always be close to the filter layer, ensuring the cleaning effect of the cleaning bristles.

[0018] Optionally, the lower ring is slidably connected to a push column, and the push column protrudes outside the outer peripheral side wall of the lower ring; The push column is inclined to form a push surface for the support ring to slide, and when the lower ring slides into the support groove, the push column slides into the lower ring; A connecting rope is slidably passed through the lower ring, one end of the connecting rope is connected to the pushing column, and the other end is connected to the bearing plate; When the push column slides into the lower ring, the connecting rope pulls the bearing plate away from the filter core.

[0019] By adopting the above technical solution and introducing structures such as a push column and a connecting rope, the function of automatically pulling the carrier plate away from the filter element is realized when the lower ring slides into the support groove, thereby reducing the possibility that the cleaning brush bristles are damaged during the reset process of the installation ring and affect the cleaning effect next time.

[0020] Optionally, a limiting block is provided on the bearing plate, and a limiting groove for sliding of the limiting block is provided on the lower ring.

[0021] By adopting the above technical solution, a limiting block is set on the design carrier plate, and a limiting groove structure for the limiting block to slide is set on the lower ring, so as to realize the limiting and guiding function of the movement of the carrier plate. This technical solution makes the movement of the carrier plate more stable and controllable during the cleaning process, and improves the accuracy and efficiency of the cleaning process.

[0022] In summary, the present application includes at least one of the following beneficial effects: 1. When cleaning the residue, the airflow is introduced through the air inlet pipe, so that the airflow flows through the filter element to the filter layer. At this time, the airflow impacts the filter cake layer, causing the filter cake layer to fall. When the airflow flows into the filter element, the airbag is controlled to expand, driving the installation ring to move downward. At this time, the cleaning bristles clean the outer wall of the filter layer, reducing the residue on the filter layer and improving the cleaning effect of the filter layer; 2. The design of the mounting ring includes an upper ring and a lower ring. The lower ring is rotatably connected to the upper ring. The introduction of the roller and the transmission assembly enables the cleaning bristles to contact the filter layer more evenly during the cleaning process, thereby improving the cleaning effect. At the same time, the roller is connected to the outer peripheral side of the filter layer in a rolling manner, which reduces the friction resistance during the cleaning process and prolongs the service life of the cleaning bristles and the filter layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the external structure of an embodiment of the present application; Figure 2 is a schematic diagram of an internal cross-section of an embodiment of the present application; Figure 3 yes Figure 2 A magnified schematic diagram of part A; Figure 4 is a schematic diagram of the internal cross-section of the mounting ring in an embodiment of the present application; Figure 5 yes Figure 4 An enlarged schematic diagram of part B.

[0024] Reference numerals: 1, filter tank; 11, filter chamber; 12, support plate; 121, support hole; 13, water inlet pipe; 14, discharge pipe; 15, transmission pipe; 16, connecting pipe; 17, shunt pipe; 171, air inlet pipe; 172, water outlet pipe; 18, tank cover; 19, tank body; 2, filter element; 21, filter layer; 3, support ring; 31, support groove; 4, mounting ring; 41, cleaning brush; 42, upper ring; 421, roller; 422, rotating shaft; 43 , lower ring; 431, accommodating groove; 432, pushing column; 433, pushing surface; 434, connecting rope; 435, limiting groove; 44, bearing plate; 441, limiting block; 45, driving spring; 5, control assembly; 51, control airbag; 52, connecting air pipe; 6, reset assembly; 61, reset rope; 62, reset shaft; 63, reset coil spring; 7, transmission assembly; 71, transmission bevel gear; 72, transmission rack; 73, connecting bevel gear; 74, power gear. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-5 This application is described in further detail.

[0026] The embodiment of the present application discloses a square candle filter.

[0027] The inventor of the present application discovered that, during the solidification and density increase process of the filter cake layer, the degree of adhesion between the filter residue and the surface of the filter cloth increases, and residues may remain on the outer surface of the filter cloth during the back-blowing cake removal operation, affecting the cleaning effect of the filter cloth. For this reason, the present application mainly adopts the following design of an automatic up and down moving mounting ring 4 and automatic resetting, thereby achieving an improved cleaning effect of the filter cloth. The present application is further described in detail below.

[0028] See also Figure 1 and Figure 2 The square candle filter provided in the embodiment of the present application includes a filter tank 1, which includes a tank cover 18 and a tank body 19. A filter cavity 11 is formed in the tank body 19. The tank cover 18 is overlapped on the top of the tank body 19 to close the filter cavity 11. The tank cover 18 and the tank body 19 are connected and fixed by a flange and bolts.

[0029] The tank body 19 is fixedly provided with an inlet pipe 13, which is connected to the filter chamber 11 and is located near the bottom of the tank body 19. The inlet pipe 13 is provided with an inlet valve for controlling the opening and closing of the inlet pipe 13. The bottom of the tank body 19 is fixedly provided with a drain pipe 14, which is connected to the filter chamber 11 and is used to discharge the filter residue in the filter chamber 11. The drain pipe 14 is provided with a drain valve for controlling the opening and closing of the drain pipe 14.

[0030] The square candle filter also includes a support plate 12, a filter element 2, a transmission pipe 15 and a diverter pipe 17. The support plate 12 is a disc-shaped structure, and the support plate 12 is located in the filter chamber 11 and close to the bottom. A fixing plate is fixedly connected to the top of the support plate 12, and a fixing bolt is passed through the fixing plate. The fixing bolt is threadedly connected to the inner wall of the tank body 19 to achieve detachable fixation of the support plate 12 and the tank body 19.

[0031] See also Figure 2 and Figure 3 , a support hole 121 is formed on the support disk 12, and there are multiple support holes 121 and they are evenly spaced. The filter core 2 is a cylindrical structure, the filter core 2 is fixedly mounted on the support disk 12, and the filter core 2 is plugged into the support hole 121. When in use, the filter core 2 is fixed and limited by the support disk 12. The middle of the filter core 2 is hollow, and a plurality of filter holes are evenly spaced on the peripheral side walls of the filter core 2. A filter layer 21 is provided on the peripheral side wall of the filter core 2, and the filter layer 21 is a filter cloth. The filter cloth is wound on the peripheral side wall of the filter core 2, and the filter cloth can be made of PP (polypropylene), PE (polyester), PPS (polyphenylene sulfide), PTFE (polytetrafluoroethylene), nylon fiber, non-woven fabric, PA and other materials.

[0032] The transmission pipe 15 is fixed to the outer wall of the tank 19, extends into the filter cavity 11, and is located above the filter element 2. There are multiple transmission pipes 15 and they are evenly spaced. The bottom of the transmission pipe 15 is connected and fixed with a connecting pipe 16. There are multiple connecting pipes 16 and they correspond to the filter elements 2 one by one. The side of the connecting pipe 16 away from the transmission pipe 15 is connected and fixed to the top of the filter element 2, and the connecting pipe 16 is connected to the hollow part of the filter element 2.

[0033] See also Figure 1 and Figure 2 The shunt pipe 17 is fixedly connected to the side of the transmission pipe 15 away from the connecting pipe 16, and the shunt pipe 17 is connected to the transmission pipe 15. When in use, the transmission pipes 15 are connected to each other through the shunt pipe 17. The two ends of the shunt pipe 17 are connected and fixed with an air inlet pipe 171 and a water outlet pipe 172, respectively. The air inlet pipe 171 is fixedly installed with an air inlet valve for controlling the opening and closing of the air inlet pipe 171; the water outlet pipe 172 is fixedly installed with a water outlet valve for controlling the opening and closing of the water outlet valve.

[0034] See also Figure 1 and Figure 3 During filtration, the discharge pipe 14 and the air inlet pipe 171 are closed, and then the water inlet pipe 13 passes the liquid to be filtered into the filter chamber 11, and then the filter layer 21 filters the solid impurities in the liquid to be filtered, and the filtered liquid enters the filter element 2, and then flows into the diversion pipe 17 through the transmission pipe 15, and finally the filtered liquid is discharged through the outlet pipe 172. The end of the outlet pipe 172 away from the tank body 19 can be connected to a water pump for extracting the filtered liquid and increasing the discharge speed of the liquid. An air pressure pipe is fixed on the tank cover 18, and the air pressure pipe is connected to the filter chamber 11. When it is necessary to discharge the filter residue, first close the outlet pipe 172 and the water inlet pipe 13, and then pressurize the filter chamber 11 through the air pressure pipe, and the water flow in the filter cake layer is squeezed into the filter element 2, so that the filter cake layer solidifies and the density increases. Then close the pressurizing pipe and open the air inlet pipe 171, so that the airflow flows through the filter element 2 to the filter layer 21. At this time, the airflow impacts the filter cake layer, causing the filter cake layer to fall off. Finally, open the discharge pipe 14 to discharge the fallen filter residue.

[0035] The square candle filter also includes a support ring 3 and a mounting ring 4. The support ring 3 is fixedly mounted on the bottom of the support plate 12. The support ring 3 is sleeved on the outer peripheral side of the filter core 2. There are multiple support rings 3 and they correspond to the filter core 2 one by one. A support groove 31 is formed in the support ring 3 and penetrates downward to the outside. The mounting ring 4 is sleeved on the outer peripheral side of the filter core 2. The inner diameter of the mounting ring 4 is larger than the outer diameter of the filter layer 21. The mounting ring 4 slides up and down in the support groove 31.

[0036] The square candle filter also includes a control component 5 and a reset component 6. When the airflow enters the filter element 2, the control component 5 controls the mounting ring 4 to slide downward away from the support plate 12; when the airflow stops entering the filter element 2, the reset component 6 drives the support ring 3 to slide upward until it slides into the support groove 31.

[0037] See also Figure 2 and Figure 3 The control assembly 5 includes a control airbag 51 and a communication air pipe 52. The control airbag 51 surrounds the filter element 2. The control airbag 51 corresponds to the support ring 3 one by one, and the control airbag 51 is installed in the support groove 31. The wall of the control airbag 51 forms an accordion cover mechanism. One end of the control airbag 51 is connected and fixed to the bottom of the mounting ring 4, and the other end is connected and fixed to the groove wall of the support groove 31 away from the groove. There are multiple communication air pipes 52 and they correspond to the control airbags 51 one by one. The communication air pipes 52 are penetrated through the support ring 3. One end of the communication air pipe 52 is connected and fixed to the control airbag 51, and the communication air pipe 52 is connected to the control airbag 51. The other end of the communication air pipe 52 is connected and fixed to the connecting pipe 16. When the airflow flows into the filter element 2 through the connecting pipe 16, part of the airflow flows into the control airbag 51 through the connecting air pipe 52, so that the control airbag 51 expands and drives the mounting ring 4 to move downward.

[0038] The reset assembly 6 includes a reset rope 61, a reset shaft 62 and a reset coil spring 63. The reset shaft 62 corresponds to the support ring 3 one by one, and the reset shaft 62 is rotatably connected in the support ring 3. The reset coil spring 63 corresponds to the reset shaft 62 one by one, and the reset coil spring 63 is wound around the outer peripheral side of the reset shaft 62. One end of the reset coil spring 63 is clamped and fixed to the reset shaft 62, and the other end is clamped and fixed to the support ring 3. The reset rope 61 corresponds to the mounting ring 4 one by one, and the reset rope 61 is wound around the outer peripheral side of the reset shaft 62. One end of the reset rope 61 is connected and fixed to the outer peripheral side wall of the reset shaft 62, and the other end is connected and fixed to the top of the mounting ring 4. When the mounting ring 4 slides downward, the reset shaft 62 releases the reset rope 61, and the reset coil spring 63 enters a contracted state. When the airflow stops entering the filter element 2, the airflow stops entering the control airbag 51. At this time, the reset coil spring 63 is released, driving the reset shaft 62 to rotate and wrap around the reset rope 61, so that the reset rope 61 pulls the mounting ring 4 to slide upward until it slides into the support groove 31. At this time, the control airbag 51 is squeezed and the airflow in the control airbag 51 is discharged.

[0039] The mounting ring 4 includes an upper ring 42 and a lower ring 43 . The lower ring 43 is rotatably connected to the bottom of the upper ring 42 . The upper ring 42 is located on a side close to the support plate 12 , and the reset rope 61 is connected and fixed to the top of the upper ring 42 .

[0040] The inner side wall of the lower ring 43 is formed with a receiving groove 431, and there are multiple receiving grooves 431 and they are evenly spaced along the circumferential direction. The lower ring 43 is provided with a bearing plate 44, which is an arc-shaped plate structure, and the bearing plate 44 corresponds to the receiving groove 431 one by one, and the bearing plate 44 slides in the receiving groove 431. A limiting block 441 is fixedly installed on the bearing plate 44, and the groove wall of the receiving groove 431 is connected to form a common limiting groove 435, and the limiting block 441 is slidably connected to the limiting groove 435, and is used to limit the bearing plate 44 from leaving the receiving groove 431.

[0041] A cleaning brush 41 is fixedly connected to the side wall of the supporting plate 44 facing the filter element 2, and there are multiple cleaning brushes 41 that are evenly spaced. The lower ring 43 is provided with a driving spring 45, and the driving spring 45 corresponds to the receiving groove 431 one by one. The driving spring 45 is installed in the receiving groove 431, and one end of the driving spring 45 abuts against the arc convex side of the supporting plate 44, and the other end abuts against the groove wall on the side of the receiving groove 431 away from the notch. When the elasticity of the driving spring 45 is released, the supporting plate 44 is pushed to move toward the filter element 2, so that the cleaning brush 41 protrudes out of the receiving groove 431. During the downward movement of the mounting ring 4, the cleaning brush 41 slides in contact with the outer peripheral side of the filter layer 21, cleans the residue remaining on the outer peripheral side wall of the filter layer 21, and improves the cleaning effect of the filter layer 21.

[0042] The lower ring 43 is slidably connected with a push column 432, and one end of the push column 432 away from the filter element 2 protrudes outside the lower ring 43. The push column 432 is inclined to form a push surface 433 on the side away from the filter element 2, and the push surface 433 faces the support ring 3. The lower ring 43 is slidably penetrated with a connecting rope 434, one end of the connecting rope 434 is connected and fixed to the push column 432, and the other end is connected and fixed to the side of the bearing plate 44 away from the cleaning bristles 41. When the driving spring 45 pushes the bearing plate 44 to move toward the filter element 2, the connecting rope 434 pulls the push column 432 to slide out of the lower ring 43. When the lower ring 43 slides into the support groove 31, the support ring 3 slides on the push surface 433, pushing the push column 432 to slide into the lower ring 43. At this time, the push column 432 pulls the connecting rope 434, driving the bearing plate 44 to slide into the receiving groove 431, so that the cleaning bristles 41 completely slide into the receiving groove 431. When the lower ring 43 completely slides into the support groove 31 , the peripheral side wall of the lower ring 43 abuts against the peripheral side wall of the support groove 31 .

[0043] See also Figure 3 and Figure 4 The inner side wall of the upper ring 42 is rotatably connected with a roller 421, and there are multiple rollers 421 arranged at intervals along the circumferential direction, and each roller 421 is located between two adjacent receiving grooves 431. When the mounting ring 4 slides up and down, the roller 421 is rollingly connected to the outer peripheral side of the filter layer 21, and the roller 421 enters a rolling state.

[0044] See also Figure 3 and Figure 5 , the upper ring 42 is provided with a transmission assembly 7. When the roller 421 rolls, the transmission assembly 7 drives the lower ring 43 to rotate. The transmission assembly 7 includes a transmission bevel gear 71, a transmission rack 72, a connecting bevel gear 73 and a power gear 74. The upper ring 42 is rotatably connected with a rotating shaft 422. The rotating shaft 422 corresponds to the roller 421 one by one, and the roller 421 is fixedly connected to the outer peripheral side of the rotating shaft 422. The transmission bevel gear 71 corresponds to the rotating shaft 422 one by one. The transmission bevel gear 71 is fixedly connected to the outer peripheral side of the rotating shaft 422, and the transmission bevel gear 71 is rotatably connected to the upper ring 42. The upper ring 42 is rotatably connected with a connecting shaft. The connecting bevel gear 73 is fixed to the outer peripheral side of the connecting shaft. The connecting bevel gear 73 is rotatably connected to the upper ring 42, and the connecting bevel gear 73 is meshed with the transmission bevel gear 71. The power gear 74 is fixedly connected to the outer peripheral side of the connecting shaft, the power gear 74 is rotatably connected to the upper ring 42, the transmission rack 72 is connected end to end to form a ring structure, the transmission rack 72 is fixedly connected to the top of the lower ring 43, and the transmission rack 72 is rotatably connected to the upper ring 42. The transmission rack 72 is meshed with the power gear 74, when the roller 421 rotates, the rotating shaft 422 drives the connecting bevel gear 73 to rotate, and then the power gear 74 drives the lower ring 43 to rotate through the transmission rack 72, so as to improve the cleaning effect of the cleaning bristles 41 on the filter layer 21.

[0045] The implementation principle of a square candle filter in the embodiment of the present application is: When it is necessary to discharge the filter residue, first close the outlet pipe 172 and the inlet pipe 13, and then pressurize the filter cake layer so that the filter cake layer solidifies and the density increases. Then, airflow is introduced through the air inlet pipe 171, so that the airflow flows through the filter element 2 to the filter layer 21. At this time, the airflow impacts the filter cake layer, causing the filter cake layer to fall. During the process of airflow entering the filter element 2, the airbag 51 is controlled to expand, driving the mounting ring 4 to move downward. At this time, the lower ring 43 rotates, driving the cleaning bristles 41 to clean the outer wall of the filter layer 21, reducing the residue on the filter layer 21 and improving the cleaning effect. When the cleaning is completed, stop introducing airflow, then open the discharge pipe 14 to discharge the fallen filter residue. At the same time, control the airflow in the airbag 51 to be discharged, and the mounting ring 4 slides upward into the support groove 31 to complete the filter residue cleaning.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A square candle filter, characterized in that: include A filter tank (1), wherein a filter cavity (11) is formed in the filter tank (1), the filter tank (1) is provided with a support plate (12) located in the filter cavity (11), and a plurality of support holes (121) are formed on the support plate (12) at even intervals; The filter tank (1) is provided with a water inlet pipe (13), and the bottom of the filter tank (1) is provided with a discharge pipe (14); A filter core (2) is arranged on the support plate (12) and plugged into the support hole (121); the filter core (2) corresponds to the support hole (121) in a one-to-one manner; and a filter layer (21) is arranged on the outer peripheral side wall of the filter core (2); A transmission pipe (15) is arranged on the outer wall of the filter tank (1) and extends into the filter cavity (11); the transmission pipe (15) is provided with a plurality of connection pipes (16) which are in communication with one side of the top of the filter core (2); A flow dividing pipe (17) connected to a side of the transmission pipe (15) away from the connecting pipe (16), the flow dividing pipe (17) being respectively connected to an air inlet pipe (171) and a water outlet pipe (172); A support ring (3) is arranged at the bottom of the support plate (12), the support ring (3) is sleeved on the outer peripheral side of the filter core (2) and corresponds one to one, and the support ring (3) is formed with a support groove (31) penetrating downward to the outside; A mounting ring (4) sleeved on the filter core (2) and slidably connected to the support groove (31) in an up-and-down manner; A control component (5) is arranged on the support ring (3), and when airflow enters the filter element (2), the control component (5) controls the mounting ring (4) to slide downwards away from the support plate (12); The mounting ring (4) is provided with cleaning bristles (41), and when the mounting ring (4) is away from the supporting plate (12), the cleaning bristles (41) are in sliding contact with the outer peripheral side of the filter layer (21); A reset component (6) is arranged on the support ring (3), and when the airflow stops entering the filter element (2), the reset component (6) drives the support ring (3) to slide into the support groove (31).

2. A square candle filter according to claim 1, characterized in that: The control component (5) comprises a control airbag (51) and a connecting air pipe (52); The control airbag (51) surrounds the filter element (2), the control airbag (51) is arranged in the support groove (31), one end of the control airbag (51) is connected to the bottom of the mounting ring (4), and the other end is connected to the groove wall of the support groove (31) away from the groove opening; The communicating air pipe (52) is arranged through the supporting ring (3); one end of the communicating air pipe (52) is connected to the control air bag (51), and the other end is connected to the connecting pipe (16).

3. A square candle filter according to claim 2, characterized in that: The reset assembly (6) comprises a reset rope (61), a reset shaft (62) and a reset coil spring (63); The reset shaft (62) is rotatably connected to the support ring (3), the reset coil spring (63) is wound around the outer circumference of the reset shaft (62), one end of the reset coil spring (63) is clamped to the reset shaft (62), and the other end is clamped to the support ring (3); The reset rope (61) is wound around the reset shaft (62); one end of the reset rope (61) is connected to the reset shaft (62), and the other end is connected to the mounting ring (4).

4. A square candle filter according to claim 3, characterized in that: The mounting ring (4) comprises an upper ring (42) and a lower ring (43), wherein the lower ring (43) is rotatably connected to a side of the upper ring (42) away from the support plate (12); The upper ring (42) is rotatably connected to a plurality of rollers (421) in the circumferential direction, and the rollers (421) are connected to the outer peripheral side of the filter layer (21) in an up-and-down rolling manner; The upper ring (42) is provided with a transmission assembly (7), and when the roller (421) rolls, the transmission assembly (7) drives the lower ring (43) to rotate.

5. A square candle filter according to claim 4, characterized in that: The transmission assembly (7) comprises a transmission bevel gear (71), a transmission rack (72), a connecting bevel gear (73) and a power gear (74); The upper ring (42) is rotatably connected to a rotating shaft (422), the roller (421) is arranged on the outer peripheral side of the rotating shaft (422), and the transmission bevel gear (71) is arranged on the outer peripheral side of the rotating shaft (422) and is rotatably connected to the upper ring (42); The upper ring (42) is rotatably connected to a connecting shaft, the connecting bevel gear (73) is arranged on the connecting shaft and rotatably connected to the upper ring (42), and the connecting bevel gear (73) is meshed with the transmission bevel gear (71); The transmission rack (72) is connected end to end and is arranged on the top of the lower ring (43); the power gear (74) is arranged on the outer peripheral side of the connecting shaft; and the transmission rack (72) is meshed with the connecting bevel gear (73).

6. A square candle filter according to claim 4, characterized in that: The inner side wall of the lower ring (43) is formed with a plurality of accommodating grooves (431) at even intervals along the circumferential direction, and the lower ring (43) is provided with a bearing plate (44) that slides in the accommodating grooves (431); The cleaning bristles (41) are arranged on a side of the bearing plate (44) close to the filter core (2), and the lower ring (43) is provided with a driving spring (45) for driving the bearing plate (44) close to the filter core (2).

7. A square candle filter according to claim 6, characterized in that: The lower ring (43) is slidably connected to a push column (432), and the push column (432) protrudes outside the outer peripheral side wall of the lower ring (43); The push column (432) is inclined to form a push surface (433) for the support ring (3) to slide, and when the lower ring (43) slides into the support groove (31), the push column (432) slides into the lower ring (43); A connecting rope (434) is slidably passed through the lower ring (43), one end of the connecting rope (434) is connected to the pushing column (432), and the other end is connected to the supporting plate (44); When the pushing column (432) slides into the lower ring (43), the connecting rope (434) pulls the supporting plate (44) away from the filter core (2).

8. A square candle filter according to claim 6, characterized in that: The bearing plate (44) is provided with a limiting block (441), and the lower ring (43) is provided with a limiting groove (435) for the limiting block (441) to slide.

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