31results about How to "Improve mud discharge effect" patented technology

The invention aims to provide pneumatic tire with excellent spoil disposal performance. On a tread portion (1), a plurality of blocks (4) are formed by a plurality of main grooves (2) annularly continuously extending in a tire circumferential direction, and a plurality of transverse grooves (3) extending in a tire width direction, intersecting these main grooves (2). Each block has projections (19) on side surfaces (18), which form each transverse groove (3), at corner regions thereof.

Provided is a pneumatic tire capable of improving noise performance and wet performance while maintaining steering stability. Disclosed is a pneumatic tire wherein: center blocks 20 and shoulder blocks 21 are partitioned by a circumferential-direction groove 10 extending in the tire circumferential direction, a plurality of inner slanted grooves 11 that communicate with the circumferential-direction groove 10 while slanting in one direction with respect to the tire circumferential direction, and a plurality of outer slanted grooves 12 that communicate with the inner slanted grooves 11 while slanting in another direction with respect to the tire circumferential direction; the pitch of each repeating element consisting of these grooves and blocks changes along the tire circumferential direction; the circumferential-direction groove 10 is constituted by a plurality of wide-width parts 10A and a plurality of narrow-width parts 10B arranged alternately in the tire circumferential direction;the inner slanted grooves 11 communicate with the wide-width parts 10A; and, the smaller the pitch of the repeating element is, the smaller the slanting angle theta formed between the tire circumferential direction and an imaginary line L connecting the respective centers of opening ends of a pair of said inner slanted grooves 11, 11 that is in communication with said wide-width part 10A.

The invention provides a sloping plate sedimentation tank for lateral rotational flow sludge discharge, relating to a sedimentation tank. The invention solves the problem of poor sludge discharge effects of the existing sloping plate sedimentation tanks. A plurality of sedimentation plates are slantwise arranged in parallel in a tank body at a certain interval from top to bottom, wherein the angleof inclination alpha of each sedimentation plate corresponding to the horizontal plane ranges from 50 degrees to 70 degrees, and each sedimentation plate is perpendicular to tank walls on both sidesof the tank body; a plurality of sludge guide plates are slantwise arranged in parallel in the tank body at a certain interval from top to bottom, the angle of inclination beta of each sludge guide plate corresponding to the horizontal plane ranges from 45 degrees to 90 degrees, each sludge guide plate is perpendicular to the front tank wall and the rear tank wall of the tank body, and baffle plates are arranged on one sides of the plurality of sludge guide plates and are vertically connected with the sludge guide plates; and other sides of the sludge guide plates are connected with the lowerends of the sedimentation plates. Large and small floccule bodies formed on adjacent sloping plate sedimentation units by sedimentation flow into a corresponding trough-like passage along the inclinedsedimentation plates, and the lateral flow speed of water currents is utilized to cause the large floccule bodies to rotationally flow downwards, thereby greatly enhancing the effect of sludge discharge.

The invention discloses a dredger-used blockage-proof special mud discharging steel pipe. The dredger-used blockage-proof special mud discharging steel pipe comprises a steel pipe body, wherein a discharging hole is formed in the side surface of the steel pipe body at the position close to the middle section; a middle section connecting part is welded to the position above the discharging hole; a rubber mat and a handle cover plate are mounted above the middle section connecting part; the handle cover plate is arranged above the rubber mat. The invention further provides a sewage discharging and dredging treating method of the dredger. The dredger-used blockage-proof special mud discharging steel pipe, provided by the invention, can be used as a steel pipe fixed point check opening, personnel can enter the inner part of the pipeline of a ship conveniently during work stoppage to check the wearing condition of the pipeline; a special inner thickness measuring point is arranged, and the wearing condition can be observed directly; the pipeline which has severe wearing condition and cannot be repaired conveniently from the outside can be treated by attaching plate and welding from the inner part, so that the service life of the steel pipe is prolonged.

The invention relates to the field of sewage treatment, and discloses a sewage treatment device for urban rivers, which includes a sedimentation tank provided with a mud discharge pipe, and a mud discharge mechanism is arranged in the sedimentation tank, and the mud discharge mechanism includes a horizontally arranged mud storage pipe and two mud guide plates, the upper side wall of the mud storage pipe is provided with a mud inlet extending along the length direction of the mud storage pipe and opening upward, and the lower ends of the two mud guide plates are respectively fixed on both sides of the mud inlet, The side wall of the mud storage pipe is plugged with a mud guard pipe that is coaxial with the mud storage pipe and can rotate. The side wall of the mud guard pipe is provided with a mud passage that can cooperate with the mud inlet; the mud discharge mechanism also includes a set The mud scraper is located in the mud storage pipe and can move along the length direction of the mud storage pipe. The mud scraper is provided with a pull rod that can extend out of the mud discharge pipe. The present invention can discharge the sludge in the lower part of the sedimentation tank more comprehensively by designing the lower part of the sedimentation tank into a sludge sedimentation and sludge discharge structure with a special structure, and achieves a relatively ideal sludge discharge effect.

Provided is a pneumatic tire capable of improving uneven-wear resistance and driving performance on muddy road surfaces, and achieving both these properties in a balanced manner. A plurality of firstlug grooves (11) and a plurality of second lug grooves (12) shorter than the first lug grooves (11) are provided alternately along the tire circumferential direction in a shoulder region of a tread part (1). A first connection groove (21) that connects the second lug groove (12) and a tip end part of the first lug groove (11) is provided, and a second connection groove (22) that connects the firstlug groove (11) and a tip end part of the second lug groove (12) is provided. An angle THETA 1 of the first connection groove (21) is greater than an angle THETA 2 of the second connection groove (22). A tire-widthwise inner end part of each of a plurality of first shoulder blocks (31) each partitioned by the first lug groove (11), the second lug groove (12), and the first connection groove (21)is arranged closer to the tire equator CL than a tire-widthwise inner end part of each of a plurality of second shoulder blocks (32) each partitioned by the first lug groove (11), the second lug groove (12), and the second connection groove (22). Each of the first and second shoulder blocks (31, 32) is provided with a traversal groove (31a, 32a) that traverses the block while being slanted with respect to the tire circumferential direction.

The invention discloses a mud scrapper applicable to a detention pool, comprising a track (2), a frame (3), wheels (4), a connecting rod mechanism (5) on the frame (3) and a rope (7); wherein each wheel (4) is rotatablely positioned at one side of a corresponding supporting plate (32) by an axle (41); the connecting rod mechanism (5) comprises at least two driven pulling rods (53) that pass through and are arranged at corresponding axles (41) respectively, at least two connecting plates (52) connecting a front and a rear driven pulling rods (53) and a driving pulling rod (51), in addition, the driving pulling rod (51) is pulled by the rope (7), the rope (7) parallels to the track (2), while the mud scrapper (6) is arranged at the bottom of the driven pulling rods (53). Compared with the prior art, in the invention the rope pulls the connecting mechanism and drives the mud scrapper arranged on the connecting mechanism to touch the bottom of the pool body, meanwhile, by the pulling of the rope, the frame can walk along the track, therefore, the mud scrapper can continuously scrap and collect the mud-like deposits at the bottom of the pool body.

The invention discloses a tire shoulder pattern structure for a tire. Pattern blocks with interval distribution of grooves and bocks are formed at two sides of a tread in the peripheral direction, wherein the tire shoulder pattern blocks extend to patterns at the upper tire side; a mud advance traction groove and a mud back-up traction groove are formed in a front and back manner; the shapes of the tire shoulder pattern blocks at the left side and the right side of the tread are in positive or reverse symmetric arrangement about the axial direction of the tire; the mud advance traction groove is formed by at least one segment of arc from the outer edges and one lateral edges of the tire shoulder pattern blocks to the pattern blocks; the mud back-up traction groove is formed by at least one segment of arc from the outer edges and the other lateral edges of the tire shoulder patter blocks to the pattern blocks. Therefore, the traction performance, the cooling effect and the mud discharge performance of the tire are effectively improved by the tire shoulder patterns formed by the tire shoulder pattern blocks; and meanwhile, the aesthetic property of the tire is enhanced.