19 results about "Tooth chamber" patented technology

Examples of apparatus, methods, and compositions for endodontic treatments are described. The apparatus can include a fluid platform configured to substantially retain fluid in a tooth chamber during treatment. The fluid platform can help maintain fluid circulation in the tooth chamber as fluid flows into and out of the tooth chamber. The apparatus can also include a pressure wave generator configured to generate acoustic waves that can be used for cleaning root canals and tooth surfaces in the tooth chamber. Examples of pressure wave generators include a liquid jet, an electromagnetic energy delivery device, and an ultrasonic device. The fluid can include antiseptic or antibacterial solutions to assist in tooth cleaning. The fluid may be degassed to have a reduced dissolved gas content (compared to non-degassed fluids used in endodontic treatments), which may improve the effectiveness of the pressure wave generation or the cleaning.

The invention discloses a novel turbomachinery vector sealing structure. A vector sealing cavity is formed between a stator shell containing sealing teeth and a rotor. The vector sealing cavity is of a spray pipe type structure in mirror symmetry, and the spray pipe type structure comprises multiple stages of sealing cavities which are sequentially connected end to end and are provided with double throat parts; the sealing cavity is sequentially divided into an expansion section and a contraction section in the airflow flowing direction, and a tooth tip jet flow bypass is arranged between the contraction section and the throat part adjacent to the downstream of the contraction section; the sealing cavity is designed to be of a thrust vectoring nozzle structure with a bypass channel, by means of the tooth cavity pressure difference generated by the throttling effect, bypass jet flow is spontaneously driven to be mixed with main leakage flow, a leakage path is guided to directionally deflect in the circumferential direction and the radial direction, multi-dimensional reconstruction of a sealing flow field is achieved, and the dual purposes of reducing leakage and restraining fluid excitation are achieved. And a new method is provided for reducing sealing leakage and improving the excitation suppression performance of sealing fluid.

The utility model discloses a novel turbomachinery vector sealing structure. A vector sealing cavity is formed between a stator shell containing sealing teeth and a rotor. The vector sealing cavity is of a spray pipe type structure in mirror symmetry, and the spray pipe type structure comprises multiple stages of sealing cavities which are sequentially connected end to end and are provided with double throat parts; the sealing cavity is sequentially divided into an expansion section and a contraction section in the airflow flowing direction, and a tooth tip jet flow bypass is arranged between the contraction section and the throat part adjacent to the downstream of the contraction section; according to the thrust vectoring nozzle, the sealing cavity is designed to be of a thrust vectoring nozzle structure with a bypass channel, by means of tooth cavity pressure difference generated by the throttling effect, bypass jet flow is spontaneously driven to be mixed with main leakage flow, a leakage path is guided to directionally deflect in the circumferential direction and the radial direction, multi-dimensional reconstruction of a sealing flow field is achieved, and the dual purposes of reducing leakage and restraining fluid excitation are achieved. And a new method is provided for reducing sealing leakage and improving the excitation suppression performance of sealing fluid.

The utility model relates to the technical field of food canning equipment, in particular to a quantitative filling device for food canning, which comprises a filling table, and a direction adjusting mechanism, a filling mechanism and two groups of supporting grooves which are arranged on the filling table, the direction adjusting mechanism is composed of a rotating disc, a tooth cavity is formed in the lower end of the rotating disc, the rotating disc is connected with an adjusting motor installed on the filling table through the tooth cavity in the bottom, rotating teeth are assembled at the output end of the adjusting motor, the rotating teeth are completely matched with the tooth cavity in the bottom of the rotating disc, and the rotating teeth and the tooth cavity are tightly matched. Connection is achieved through cooperation of a bottom tooth cavity and a rotating tooth of an adjusting motor of a rotating disc in the direction adjusting mechanism, the design structure is relatively simple, the problems that a traditional direction adjusting mechanism is high in component integration degree and complex in structure are solved, when faults occur, troubleshooting and maintenance are easier, the equipment downtime can be effectively shortened, and the production efficiency is improved. The labor cost investment is reduced, so that the production efficiency is improved.

The present invention discloses a double-station finishing equipment for a gear pump tooth cavity, comprising a machine tool body, the machine tool body being provided with a tool clamping mechanism, the tool clamping mechanism clamping a gear pump housing to be processed; the gear pump housing comprising a first tooth cavity and a second tooth cavity; a first fine boring mechanism being provided at one end of the machine tool body, the first fine boring mechanism processing the first tooth cavity; a second fine boring mechanism being provided at the other end of the machine tool body, the second fine boring mechanism processing the second tooth cavity; a slide rail being provided between the first fine boring mechanism and the second fine boring mechanism, the first spindle and the second spindle being parallel to the slide rail; the slide rail being slidably connected to a first slide, the tool clamping mechanism being fixedly provided on the first slide. The beneficial effects of this solution can be known from the description of the above solution, that is, the structure is simple and the design is reasonable, which not only reduces the workload and improves the processing efficiency, but also ensures that the angles of the axis centers of the two tooth cavities are accurate, and ensures that the distance between the axis centers of the two tooth cavities meets the design requirements.

This application provides a doorbell lens structure, including a housing with symmetrical mounting holes on both sides, and a transparent outer lens cover on the front side of the housing; an inner ring mounted on the inner wall of the housing, with a motor mounted on the top side of the inner ring; and a cleaning plate mounted on the bottom surface of the rotating ring within a placement cavity. A gear meshes with the wall of the connecting toothed cavity, driving the gear to rotate and thus the rotating ring to rotate. The sliding cavity rotates under the constraint of a limiting rod mounted on the bottom wall of the inner ring, thereby driving the cleaning plate at the bottom of the rotating ring to rotate. The cleaning plate is elastic. When the cleaning plate rotates two revolutions to the position of the magnet, an external power supply increases the magnetism of the magnet. Under the action of magnetic attraction, the cleaning plate is bent and pressed against the side surface of the magnet, remaining within the placement cavity. When the power is disconnected, the cleaning plate returns to its original shape due to its own elasticity. The motor drives a cotton brush to clean the surfaces of the focusing area, the central viewing area, and the lower viewing area.

The present invention relates to the technical field of analysis and design of aero-engine air systems, and in particular to a method for calculating the leakage flow of non-uniform gap straight-through grate teeth. The method comprises the following steps: obtaining the inlet and outlet pressures of the non-uniform gap straight-through grate teeth; preliminarily selecting the pressures in tooth cavities of each level of grate teeth according to the inlet and outlet pressures; obtaining the flow rates of the tooth top clearances of each level of grate teeth based on the sizes of the tooth top clearances of each level of grate teeth; correcting the preliminarily selected pressures in the tooth cavities of each level of grate teeth according to a flow continuity condition; and determining the leakage flow rates of the non-uniform gap straight-through grate teeth after the tooth top clearance flow rates of each level of grate teeth meet an optimal condition. The method can accurately calculate the leakage flow rates of the non-uniform gap grate teeth.

The invention relates to a stepped labyrinth sealing structure with combination of a smooth bushing and a straight-through tooth wear groove bushing, and belongs to the field of aero-engine sealing, the labyrinth sealing structure comprises a rotor and a stator, the periphery of the rotor is axially provided with multi-stage stepped integral-ring-shaped labyrinth, the radial heights of two adjacent labyrinth are different, and the radial heights of the labyrinth are different. The axial distance between every two adjacent comb teeth is the same, and a comb tooth cavity is formed between every two adjacent comb teeth. The inner circumference of the stator is provided with step-shaped step bushes matched with the multiple stages of step labyrinth teeth in a one-to-one correspondence mode, gaps between each axial step face of the step bushes and the corresponding labyrinth teeth are the same, and an annular groove with a rectangular section is formed in the position, right opposite to the corresponding labyrinth teeth, of each axial step face. The smooth bush is combined with the straight-through tooth abrasion groove bush, an improved stepped tooth groove bush structure is obtained, the performance of the labyrinth sealing structure is improved by combining the improvement of the labyrinth structure, and the leakage amount is further reduced.

A slide fastener and a garment are disclosed, including a main member unit (100) having a main member tape (110), and a main member double teeth (120) provided at intervals on the main member tape (110) and formed with a plurality of double tooth cavities (130) and a main slide portion (140) constituting a slide rail, and a sub-member unit (200) having a sub-member tape (210) and sub-member double teeth (220) provided at intervals on the sub-member tape (210). The sub-member double teeth (220) include a tooth portion (223), a connecting portion (222), and a sub-member base (221). The sub-member base (221) is connected to the sub-member tape (210). The tooth portion (223) is fitted into the double tooth cavity (130), and the connecting portion (222) is fitted into the main slide portion (140). Thereby, the tooth portion (223) slides along the double tooth cavities (130) arranged in sequence, and the sub-member base (221) covers the side surface of the arm portion (122b) on the side of the main slide portion (140). The left side surface of the sub-member base (221) is connected to slide on the right side surface of the main member double teeth (120). By being connected to the sub-member base (221) on the right side surface of the main member double teeth (120), the sub-member base (221) rubs against the main member double teeth (120) instead of the edge of the fabric, greatly reducing the total frictional force, effectively improving the overall smoothness, and reducing the frictional noise.

The utility model provides a kind of automatic material discharging frame of laver roll based on intelligent control, it is related to material discharging frame technical field, including chassis, the center of chassis is penetrated and is fixedly connected with support column, the inside of chassis is equipped with tooth cavity, the surface of support column and located tooth cavity inside sleeve and is fixedly connected with gear ring, the inside of tooth cavity and located gear ring one side is equipped with gear, gear and gear ring meshing connection, the surface of support column and close to top is equipped with lifting groove, the inside bearing rotationally connected with one-way screw of lifting groove, the surface of one-way screw is sleeved and is screw-connected with L type board.In the utility model, through the cooperation of chassis, support column, rotating rod, gear, gear ring, one-way screw and other structures, and the accurate control of intelligent control system to motor and other power components, accurate positioning and placement of laver roll in three-dimensional space can be realized, ensure that laver roll accurately enters subsequent processing station, improve processing quality, reduce the rate of defective products.

A circular saw blade (1) for cutting metal has a disc-shaped base body (2), a tooth chamber (5) which opens toward the radially outer side at the outer periphery of the base body (2), and a bit seat (6) which is recessed at the rear end in the direction of rotation of the tooth chamber (5). The circular saw blade (1) has a bit (10) which is mounted in the bit seat (6) and projects radially outward beyond the base body (2). The bit (10) has a blade thickness which is thicker than the thickness (2c) of the base body (2). The bit (10) has a thin-walled portion (15) on the radially inner side which has a thickness which is less than the thickness (2c) of the base body (2). In the thickness direction, the thin-walled portion (15) is located within the thickness of the bit seat (6).

The utility model discloses a hidden type emergency escape window opening and closing device which comprises a window body, an auxiliary frame and an opening and closing control mechanism installed on the auxiliary frame, rotating shafts are arranged at the two ends of the inner side of the auxiliary frame, the window body is movably installed in the auxiliary frame through the rotating shafts, and the opening and closing control mechanism comprises an opening and closing assembly. By arranging the window body, the auxiliary frame and the opening and closing control mechanism, when the window body is damaged, a driving piece and clamping teeth in the opening and closing assembly are matched with a tooth cavity formed in one side of a rotating shaft on the auxiliary frame for use, the whole window body can rotate by 90 degrees on the auxiliary frame, and under some emergency situations such as fire disasters or natural disasters, the window body can be opened and closed by 90 degrees. The position of the window body can be quickly changed, so that an additional escape path or a ventilation opening can be created, and meanwhile, compared with a traditional multi-mechanical-structure forming mode, by means of the mode that the driving piece and the rotating shaft are clamped, the structure is simpler, and follow-up manufacturing and maintenance are easy.

The invention relates to the technical field of production and processing of computer accessories, in particular to an extrusion device for computer accessories, which comprises a supporting table and an extrusion device, a mounting plate is fixedly mounted at the lower end of the supporting table through a support, and a cavity is formed in the periphery of a rotating shaft; and a double-inclined-surface tooth block which is connected with the positioning tooth cavity in an inserting manner is fixedly mounted in the concave cavity through a first spring. Through threaded connection between a first threaded rod and a first push plate and meshing connection between a first bevel gear and a second bevel gear, a first driving motor can drive all the first push plates to contract inwards or expand outwards through an output shaft of the first driving motor; and in cooperation with the elastic force of the first spring, when the first push plate on one side cannot move, the first driving motor can still drive the other first push plates to move, so that all the first push plates can make contact with the periphery of the computer accessory, and the effect of positioning the accessory is achieved.

A circular saw blade (1) has a disc-shaped base body (2). The circular saw blade (1) has a plurality of tooth chambers (10) recessed in an outer periphery (2b) of the base body (2). The circular saw blade (1) has a plurality of tips (5) engaged with the outer periphery (2b) of the base body (2). The plurality of tooth chambers (10) includes deep tooth chambers (11) having a tooth chamber depth (11a) of 1.13 to 1.60 times an average tooth chamber depth. The plurality of tooth chambers (10) includes shallow tooth chambers (12) having a tooth chamber depth (12a) of 0.60 to 0.95 times the average tooth chamber depth. The circular saw blade (1) has a deep region (14) including only 2 to 3 continuous deep tooth chambers (11) and a shallow region (15) including only 2 to 7 continuous shallow tooth chambers (12).

The trimming and cutting equipment comprises a placing plate, a plurality of blades and positioning blocks are arranged on the upper side of the placing plate, a movable plate is installed at the upper end of the placing plate in a sliding mode, a positioning tooth cavity is formed in the middle of the movable plate, a connecting base is arranged in the positioning tooth cavity, the blades are fixedly installed at the lower end of the connecting base, and the blades are fixedly installed at the lower end of the connecting base. Positioning tooth blocks connected with the positioning tooth cavities in an inserted mode are installed on the two sides of the connecting base in a sliding mode, a positioning rotating shaft is rotatably installed in the connecting base, a first movable rod and a second movable rod are fixedly installed on the periphery of the positioning rotating shaft and the inner sides of the positioning tooth blocks correspondingly, and positioning inserting holes are formed in the periphery of the positioning rotating shaft; the middle of the coil spring is connected with the positioning insertion hole in an inserted mode, a positioning clamping block is arranged on the inner wall of the limiting frame, the periphery of the coil spring is connected with the positioning clamping block in a clamped mode, the number and the positions of the blades can be adjusted, and the trimming and cutting effect on clothes is improved.

The invention discloses a labyrinth brush type composite sealing device with self-adaptability and high sealing performance and an installation method. The labyrinth brush type composite sealing device comprises a labyrinth disc, and a tooth cavity is formed between every two adjacent labyrinth teeth on the labyrinth disc; a plurality of sealing cavities are formed in an inner ring of the mounting seat, the inner ring of the mounting seat is opposite to one side of the labyrinth on the labyrinth disc, and the sealing cavities correspond to the labyrinth in a one-to-one mode; mounting grooves are formed in the mounting seat between every two adjacent sealing cavities, the multiple mounting grooves correspond to the multiple tooth cavities in a one-to-one mode, metal sealing rings are arranged in the mounting grooves, and brush rings are arranged between the tooth cavities and the metal sealing rings; the airflow dissipation and friction effects are enhanced, the ventilation effect is weakened, and the overall sealing performance of the structure is improved.

The application provides a stepped labyrinth sealing structure with a shunt passage. The shunt passage is arranged between the two steps of the sealing bush, so that part of the airflow is backflowed into the shunt passage before the tooth top of the second step, thereby inhibiting the leakage of the airflow. The inlet of the shunt passage is arranged between the first step and the second step of the bush, and the outlet is arranged on the second step. After the airflow flows through the first step of the labyrinth, the airflow is divided into two parts, one part of the airflow flows to the second step along the original labyrinth passage, and the other part flows into the shunt passage. The airflow in the shunt passage is subjected to the frictional resistance of the wall surface, so that the pressure is reduced. The pressure at the outlet of the shunt passage is lower than the pressure in the tooth cavity between the first step and the second step of the labyrinth, so that the airflow is backflowed into the shunt passage before the gap between the tooth tops of the second step of the labyrinth, and the leakage flow of the airflow is reduced. The method can improve the sealing performance of the labyrinth without affecting other system functions, without changing the structural parameters such as the size and position of the labyrinth sealing, and the method is simple and feasible.

The utility model relates to the technical field of tooth-shaped staple bolt machining, in particular to an automobile staple bolt tooth-shaped insert machining device. Comprising a tooth-shaped mold, two tooth array cavities are formed in the tooth-shaped mold in a mirror symmetry mode, the cross section of each tooth array cavity is an arc smaller than a semicircle, and each tooth array cavity comprises a plurality of tooth cavities; the tooth-shaped mold comprises a left mold body and a right mold body which can be separated, a first insert groove is formed in the left mold body, a second insert groove is formed in the right mold body, and the first insert groove and the second insert groove are correspondingly connected with a left insert and a right insert respectively. The left insert and the right insert are the same in structure, a concave groove is formed in the end, close to the tooth array cavity, of the right insert, a first convex part and a second convex part are arranged in the middle of the right insert, and the first convex part and the second convex part are oppositely arranged and located on the two sides of the right insert. According to the device, the staple bolt can be machined into an integrally-formed structure, the strength is higher, secondary machining is not needed, and the tooth profile and the staple bolt groove are machined in the same device.

The invention provides atomic layer deposition equipment and a processing method, and the atomic layer deposition equipment comprises a jig, the side wall of which is provided with a clamping projection; the processing mechanism comprises a shell and a box body, a sealing frame is arranged at an opening of the shell, and the box body is placed in the shell; the sealing mechanism comprises a moving frame, a cavity door and fork teeth, the cavity door and the box body synchronously move along with the moving frame, the fork teeth are connected to the moving frame, penetrate through the cavity door and then extend towards the machining cavity in the first direction, clamping blocks are arranged on the fork teeth, clamping grooves are formed in the clamping blocks, and the clamping protrusions can be embedded in the clamping grooves. Elements in the jig can be machined through the box body at the same time, the cavity door in the sealing mechanism is used for sealing and covering the machining cavity, the prongs can move synchronously with the cavity door and can be highly matched with the jig, and therefore compared with conventional atom deposition equipment at the present stage, the machining efficiency is greatly improved. The device has the remarkable advantages of being high in automation degree, flexible to use, convenient to control and adjust, high in structure matching degree, capable of remarkably improving the machining efficiency and the like.