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CN-116492752-B - Filter with blowback function

CN116492752BCN 116492752 BCN116492752 BCN 116492752BCN-116492752-B

Abstract

The invention discloses a filter with a back blowing function, which comprises a filter body, wherein an upper cover and a lower cover are arranged in the filter body in a sliding manner, a filter element is arranged between the upper cover and the lower cover, an oil outlet pipe and an air tap are connected to the upper cover, the position of the air tap is positioned at the outer side of a folding part of the filter element, a flange is arranged above the upper cover, an air inlet is formed in the flange, an outer sealing gasket corresponding to the air tap is arranged at the bottom of the flange, and an inner sealing gasket corresponding to the air inlet is arranged on the top surface of the upper cover. The filter has the beneficial effects that in the filtering state, the upper cover moves upwards, the air tap and the air inlet cannot be communicated, oil can only pass through the filter element and is discharged from the oil outlet pipe, in the back blowing state, the upper cover moves downwards, the air tap is communicated with the air inlet, part of air flow enters the filter element from the oil outlet pipe and then passes through the filter element, the filter element can be cleaned, and the other part of air flow enters the filter element from the air tap to clean the outer surface of the filter element, and the filter screen is cleaned from inside and outside, so that the cleaning effect is better.

Inventors

  • GUO ZHONGYU

Assignees

  • 创硕过滤设备（昆山）有限公司

Dates

Publication Date
20260512
Application Date
20230427

Claims (8)

  1. 1. The filter with the blowback function comprises a filter body and is characterized in that the filter body comprises a shell, a filter element arranged in the shell and a supporting sleeve arranged on the inner side of the filter element, an oil inlet pipe is arranged at the bottom of the shell, through holes for impurities to pass through are formed in the oil inlet pipe, an upper cover and a lower cover are arranged on two sides of the filter element in the height direction, a plurality of air nozzles are arranged on the upper cover in a circumferential array, a flange is arranged at the top of the shell, an end cover is arranged at the top of the flange, a top cover for closing a space is arranged on the end cover, through grooves are formed in the middle of the end cover and the flange, an oil outlet pipe penetrating through the through grooves is in threaded connection with the center of the upper cover, a plurality of air inlets are formed in the flange, the through grooves on the end cover are communicated with the air inlets, an inner sealing gasket corresponding to the air inlets is arranged on the top surface of the upper cover, an outer sealing gasket corresponding to the air nozzles is arranged on the bottom surface of the flange, and the upper cover, the filter element, the supporting sleeve and the lower cover slide up and down in the shell to realize sealing between the inner sealing gasket and the outer sealing gasket and the air inlets. A spring is arranged between the lower cover and the inner bottom surface of the shell, and the spring always applies upward acting force to the lower cover; The shell comprises a side wall, a top plate and a support ring connected between the side wall and the top plate, the diameter of the upper cover is larger than the outer diameter of the side wall, a groove is formed in the position, corresponding to the upper cover, of the support sleeve, and a sealing ring is arranged in the groove.
  2. 2. The filter with back flushing function as set forth in claim 1, wherein the filter element is in a ring-shaped folded shape, and the air tap is located between two folded portions outside the filter element.
  3. 3. The filter with back flushing function as set forth in claim 1, wherein the upper cover and the lower cover are provided with raised rings on their corresponding surfaces.
  4. 4. The filter with the blowback function of claim 1, wherein the end cover, the flange and the top plate are connected through bolts, and sealing rings are arranged between the end cover and the flange and between the flange and the top plate.
  5. 5. The filter with back flushing function of claim 1, wherein the joint of the oil outlet pipe is stepped, the joint part of the oil outlet pipe is in threaded connection with the upper cover, and the inner side of the inner side sealing gasket is embedded between the upper cover and the outer wall of the oil outlet pipe.
  6. 6. The filter with blowback function according to claim 1, wherein the bottom surface of the housing is arc-shaped, and the height of the housing at a position corresponding to the oil outlet pipe is lowest.
  7. 7. The filter with back flushing function of claim 1, wherein a swivel is rotatably arranged on the air tap, the swivel is connected with a straight rod through a connecting plate, and the straight rod is provided with a blade and a dust removing plate.
  8. 8. The filter with back flushing function of claim 7, wherein a baffle is arranged on the bottom surface of the air tap, the distance from the baffle to the straight rod is smaller than the maximum distance from the ash removing plate to the straight rod, and the ash removing plate has elasticity and resilience.

Description

Filter with blowback function Technical Field The invention belongs to the field of filtration, in particular to the field of filters, and particularly relates to a filter with a back flushing function. Background The filter is a device on the conveying medium pipeline, the filter comprises a cylinder body, a filter element, and the like, the liquid to be treated is blocked after passing through the filter element of the filter, so that the liquid filtered by the filter can be recycled or purer, the subsequent use is convenient, but after a period of time, the filter element can be blocked by the impurity blocked by the filter element, the filter element needs to be removed and cleaned or replaced, the process is troublesome, and the tightness of the filter can be possibly damaged when the filter is detached. Disclosure of Invention The invention aims to provide a filter with a back flushing function. In order to achieve the above purpose, the present invention provides the following technical solutions: The utility model provides a filter with blowback function, includes the filter body, the filter body includes the casing, sets up the filter core in the casing and sets up in the inboard supporting sleeve of filter core, the bottom of casing is provided with into oil pipe, set up the through-hole that supplies impurity to pass on the oil pipe, both sides on the direction of height of filter core are provided with upper cover and lower cover, be circumference array on the upper cover and be provided with a plurality of air cock, the casing top is provided with the flange, the top of flange is provided with the end cover, be provided with the top cap that is used for enclosure space on the end cover, all set up logical groove in the middle of end cover and the flange, the center department threaded connection of upper cover has the oil pipe of going through the groove, a plurality of air inlets have been seted up on the flange, logical groove and air inlet intercommunication on the end cover, be provided with the inboard sealed pad corresponding with the air inlet on the top surface of upper cover, be provided with the sealed pad in the outside corresponding with the air cock of air cock on the bottom surface of air cock, thereby upper cover, filter core, supporting sleeve and lower cover slide in order to realize the sealed pad and the air inlet intercommunication with the air cock of outside sealed pad in the casing from top. Preferably, a spring is arranged between the lower cover and the inner bottom surface of the shell, and the spring always applies upward acting force to the lower cover. Preferably, the shell comprises a side wall, a top plate and a support ring connected between the side wall and the top plate, the diameter of the upper cover is larger than the outer diameter of the side wall, a groove is formed in the position, corresponding to the upper cover, of the support sleeve, and a sealing ring is arranged in the groove. Preferably, the filter element is in an annular folding shape, and the air tap is positioned between two folding parts on the outer side of the filter element. Preferably, a convex ring is arranged on the corresponding surface of the upper cover and the lower cover. Preferably, the end cover, the flange and the top plate are connected through bolts, and sealing rings are arranged between the end cover and the flange and between the flange and the top plate. Preferably, the joint of the oil outlet pipe is stepped, the joint of the oil outlet pipe is in threaded connection with the upper cover, and the inner side of the inner sealing gasket is embedded between the upper cover and the outer wall of the oil outlet pipe. Preferably, the bottom surface of the shell is arc-shaped, and the height of the position of the shell corresponding to the oil outlet pipe is lowest. Preferably, the rotating ring is rotatably arranged on the air tap, the rotating ring is connected with a straight rod through a connecting plate, and the straight rod is provided with blades and an ash removal plate. Preferably, a baffle is arranged on the bottom surface of the air tap, the distance from the baffle to the straight rod is smaller than the maximum distance from the ash removing plate to the straight rod, and the ash removing plate has elasticity and resilience. The filter has the advantages that the top cover is connected with the fan, the upper cover is moved downwards through the air flow, the air inlet is communicated with the air flow, a part of the air flow enters the inner side of the filter element from the oil outlet pipe, impurities on the filter element are blown off from the inner side of the filter element, and a part of the air flow enters from the air tap which is positioned between two folding parts of the filter element and is positioned on the outer side of the filter element, so that the outer surface of the filter element is cleaned, the filter element is cleaned from inside and o