Primary sewage treatment box
The technical field is as follows:
the utility model relates to a sewage treatment technical field, concretely relates to primary sewage treatment case.
Background art:
before sewage containing solid impurities such as insoluble substances, large-particle sand, stones, residues and the like enters a subsequent biochemical treatment process, the solid impurities which have influence on biochemical reaction need to be removed. The prior art is that solid matters such as insoluble substances, large-particle sand, stones, residues and the like are generally filtered through a filter screen, so that the solid impurities are easily accumulated on the filter screen to cause the blockage of the filter screen, and the filter screen is troublesome to clean.
The utility model has the following contents:
the utility model aims at overcoming the not enough of prior art, providing a primary sewage treatment case, it can effectively separate solid impurity such as residue, and can not cause the jam to the filter screen, conveniently clears up solid impurity.
The utility model provides a technical problem's scheme is:
a primary sewage treatment tank comprises a tank body, wherein a filter cavity with an opening at the upper side is formed in the tank body, a tank cover fixedly connected with the tank body in a sealing manner is arranged at the upper side of the filter cavity, a water inlet hole and a sewage discharge hole which are communicated with the filter cavity are formed at the lower end of the right side wall of the tank body, the water inlet hole is connected with a water inlet pipe in a sealing manner, the sewage discharge hole is screwed with a screw plug, a water outlet hole communicated with the filter cavity is formed at the upper end of the left side wall of the tank body, a transverse plate is fixedly arranged on the inner wall at the left side of the filter cavity, the front side wall and the rear side wall of the transverse plate are respectively pressed on the inner wall of the filter cavity, a plurality of rows of through holes penetrating up and down are formed at the right end of the transverse plate, a stop rod is sleeved in each through hole, the lower extending end of the stop, the lifting plate is provided with an adjusting mechanism for driving the lifting plate to move up and down, the stop rod penetrates through the upper extending end of the through hole and is fixed on the floating plate, a plurality of springs arranged in the front and back are fixed on the floating plate, and the upper ends of the springs are pressed on the box cover; a filter screen is fixedly arranged between the box cover and the inner wall of the filter cavity and is positioned above the transverse plate.
The right side wall of the box body is provided with two sliding grooves which are arranged in a row and communicated with the filter cavity, the adjusting mechanism comprises two sliding blocks which are respectively inserted and sleeved in the two sliding grooves, the lower ends of the two sliding blocks are respectively fixed at the front end and the rear end of the lifting plate, one of the sliding blocks is in threaded connection with the lower end thread section of the adjusting screw rod, the upper end polished rod of the adjusting screw rod is hinged on the box cover through a sealing shaft, and the adjusting screw rod penetrates through the upper extending end of the box cover and is fixed with an adjusting hand wheel.
A sealing groove is formed in the outer wall of the lifting plate, a sealing ring is sleeved in the sealing groove, and the right side wall, the front side wall and the rear side wall of the sealing ring are pressed against the inner wall of the filter cavity.
The case lid is "Z" style of calligraphy, the upper end shaping of box has the terminal surface that is "Z" style of calligraphy, the shaping has the annular on the terminal surface of "Z" style of calligraphy of box, is equipped with the annular sealing area in the annular, and the annular sealing area centre gripping is between box and case lid.
The lower bottom surface of the filter cavity is formed with an inclined plane with a higher left side and a lower right side.
Each row of through holes on the transverse plate and one row of through holes adjacent to the through holes are arranged in a staggered mode.
The utility model discloses an outstanding effect is: compared with the prior art, it can effectively separate solid impurities such as residue, and can not cause the jam to the filter screen, conveniently clears up solid impurities.
Description of the drawings:
fig. 1 is a schematic structural view of the present invention;
fig. 2 is a top view of the present invention;
FIG. 3 is a cross-sectional view of FIG. 2 taken about A-A;
FIG. 4 is a cross-sectional view of FIG. 2 taken about B-B;
fig. 5 is a schematic view of the box body and the transverse plate of the present invention.
The specific implementation mode is as follows:
in the embodiment, as shown in fig. 1 to 5, a primary sewage treatment tank includes a tank body 11, the tank body 11 is formed with a filter chamber 111 having an open upper side, a tank cover 12 sealingly and fixedly connected to the tank body 11 is provided on the upper side of the filter chamber 111, a water inlet 112 and a sewage discharge 113 are formed at a lower end of a right side wall of the tank body 11 and communicated with the filter chamber 111, the water inlet 112 is sealingly connected with a water inlet pipe 13, the sewage discharge 113 is screwed with a screw plug 14, a water outlet 114 communicated with the filter chamber 111 is formed at an upper end of a left side wall of the tank body 11, the water outlet 114 is connected with a water outlet pipe 15, a transverse plate 16 is fixed to a left inner wall of the filter chamber 111, a front side wall and a rear side wall of the transverse plate 16 are respectively pressed against an inner wall of the filter chamber 111, a plurality of rows of through holes 161 penetrating up and down are formed at a right end of the transverse plate 16, a blocking rod 17 is sleeved in the through hole, the right side wall, the front side wall and the rear side wall of the lifting plate 18 are respectively pressed against the inner wall of the filter cavity 111, the lifting plate 18 is provided with an adjusting mechanism 3 for driving the lifting plate to move up and down, the stop rod 17 penetrates through the upper extending end of the through hole 161 and is fixed on a floating plate 19, a plurality of springs 20 arranged in the front and back are fixed on the floating plate 19, and the upper ends of the springs 20 are pressed against the box cover 12; a filter screen 22 is fixedly arranged between the box cover 12 and the inner wall of the filter cavity 111, and the filter screen 22 is positioned above the transverse plate 16.
Furthermore, two sliding grooves 115 which are arranged in a row and communicated with the filter cavity 111 are formed in the right side wall of the box body 11, the adjusting mechanism 3 comprises two sliding blocks 31 which are respectively inserted and sleeved in the two sliding grooves 115, the lower ends of the two sliding blocks 31 are respectively fixed at the front end and the rear end of the lifting plate 18, one sliding block 31 is screwed on a lower end thread section of the adjusting screw rod 32, an upper end polished rod of the adjusting screw rod 32 is hinged on the box cover 12 through a sealing shaft 33, and an adjusting hand wheel 34 is fixed at the upper extending end of the adjusting screw rod 32 penetrating through the box cover 12.
Furthermore, a sealing groove is formed on the outer wall of the lifting plate 18, a sealing ring 21 is sleeved in the sealing groove, and the right side wall, the front side wall and the rear side wall of the sealing ring 21 are pressed against the inner wall of the filter cavity 111.
Furthermore, the box cover 12 is Z-shaped, the upper end of the box body 11 is formed with a Z-shaped end surface, the Z-shaped end surface of the box body 11 is formed with a ring groove 116, a ring sealing strip 23 is arranged in the ring groove 116, and the ring sealing strip 23 is clamped between the box body 11 and the box cover 12.
Furthermore, the lower bottom surface of the filter cavity 111 is formed with a slope 1111 that is higher at the left and lower at the right.
Furthermore, each row of through holes 161 of the cross plate 16 is offset from the adjacent row of through holes 161.
The working principle is as follows: sewage enters a filtering cavity 111 of the box body 11 from a water inlet pipe 13, a part of solid impurities are accumulated on an inclined plane 1111 of the filtering cavity 111 by utilizing the density difference between the solid impurities such as insoluble substances, large-particle sand, stones, residues and the like and water, other substances and water are filtered for the second time from a lower bottom surface of a transverse plate 16, an upper bottom surface of a lifting plate 18 and gaps formed among a plurality of baffle rods, and the sewage after the second filtration is finally filtered for the third time by a filter screen 22 and then is discharged from a water outlet pipe 15; by rotating the adjusting hand wheel 34, the adjusting hand wheel 34 drives the adjusting screw rod 32 to rotate, the adjusting screw rod drives the sliding block 31 to move upwards or downwards, and the sliding block 31 drives the lifting plate 18 to move upwards or downwards, so that the size of a gap between the lifting plate and the transverse plate is changed, and solid impurities with different sizes can be filtered as required; when solid impurities in the filter cavity 111 need to be cleaned, the water inlet pipe stops feeding water, the water outlet pipe stops discharging water, after the filter cavity is kept still for a period of time, the adjusting hand wheel is rotated to drive the lifting plate 18 to move downwards and separate from the stop lever, then the plug screw is opened, the solid impurities flow out from the sewage outlet, and the solid impurities can be prevented from being accumulated and discharged under the action of the inclined plane 1111.
Finally, the above embodiments are only used for illustrating the present invention, and not for limiting the present invention, and those skilled in the relevant art can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.