54 results about "Left wall" patented technology

This utility model discloses an anti-deviation device for a belt conveyor, comprising a frame, a rotating plate hinged to the upper left side of the frame, a drive motor fixedly installed on the upper left wall of the rotating plate, a drive shaft fixedly installed on the right wall of the drive motor, a sprocket fixedly installed through the left side of the drive shaft, and a chain meshing with the outside of the sprocket. This anti-deviation device for a belt conveyor detects the raw material using an infrared detection device. When the raw material deviates from the specified track, the drive motor is automatically started, driving two driven pulleys to rotate, which in turn drive two rotating rods to rotate, thereby driving a bevel gear set to rotate. The rotation of the bevel gear set drives a bidirectional lead screw to rotate, thereby driving the slider and connecting rod to move inward, so that the push plate adjusts the position of the raw material. After the work is completed, the rotating plate is rotated by starting a hydraulic cylinder, which facilitates cleaning of the equipment and reduces the labor burden of the user.

This utility model provides a sewage sedimentation device, relating to the field of sewage treatment technology. It includes a sewage sedimentation tank, with a control box installed on the left side. The control box houses a control motor, and an output gear is fixedly mounted on the output shaft of the control motor. A transmission belt is mounted on the surface of the output gear. A limit frame is fixedly installed on the inner left wall of the sewage sedimentation tank, and a transmission screw is installed inside the limit frame. A transmission gear is fixedly mounted on the left end of the transmission screw, and a movable slider is mounted on the surface of the transmission screw. This utility model utilizes the rotation of the control motor to move a cleaning plate to the right. As the cleaning plate moves, a contact block adheres to the bottom end of a trapezoidal stop and moves to the right accordingly. During this movement, the contact block is squeezed by the trapezoidal stop, ensuring that the cleaning plate remains in contact with the top inclined surface of the trapezoidal guide plate, cleaning impurities from the top inclined surface of the trapezoidal guide plate into a collection box.

To reduce the manufacturing cost of ink cartridges with asymmetrical shapes. [Solution] The ink cartridge 30 comprises a blow-molded container body 31. The container body 31 has a left wall 42, a right wall 43, a storage chamber 46 between the left wall 42 and the right wall 43, and a supply section 33 that connects the storage chamber 46 to the outside. A parting line 717 is located in the supply section 33. The distance along the left-right direction from the left wall 42 to the parting line 717 of the supply section 33 is referred to as the first distance D1. The distance along the left-right direction from the right wall 43 to the parting line 717 of the supply section 33 is referred to as the second distance D2. The first distance D1 is longer than the second distance D2.

A magazine base pad having enhanced gripping features. The base pad has a left side, a front, and a right side. A left wall extends upward along the left side, a front wall extends upward along the front, and a right wall extends upward along the right side. An inward sloping surface runs along the left wall and the right wall. An inward sloping surface preferably runs along the front wall as well. The left side opens into a left side notch. The right side opens into a right side notch. Each of these notches includes a plurality of longitudinally oriented ribs. The ribs are preferably a “sawtooth” design that allows an engaging finger or thumb to move easily upward across the ribs but tends to frictionally engage a finger or thumb when it is moved downward across the ribs. The notches, ribs, and inward sloping surface cooperate to enhance a user's grip on the base pad.

In a liquid cartridge having a blow-molded body, a means is provided to prevent air from remaining in the area where the two recesses come into contact. [Solution] The ink cartridge 30 comprises a container body 31 having a first cylindrical portion 34, a left wall 42, and a right wall 43. The container body 31 is blow-molded. A portion of the left wall 42 has a first recess 101 that is recessed to the right. A portion of the right wall 43 has a second recess 102 that is recessed to the left. The inner surfaces of the end wall 111 of the first recess 101 and the end wall 121 of the second recess 102 are in contact. The first length L1 along the left-right direction of the outer surfaces of the end walls 111 and 121 is shorter than the second length L2, which is the sum of the left-right length L3 of the left wall 42 and the left-right length L4 of the right wall 43.

This invention provides a liquid container that reduces the manufacturing cost of ink cartridges with asymmetrical shapes. The ink cartridge (30) has a blow-molded container body (31). The container body (31) has a left wall (42), a right wall (43), a storage chamber (46) between the left wall (42) and the right wall (43), and a supply section (33) connecting the storage chamber (46) and the outside. A parting line (717) is located in the supply section (33). The distance along the left-right direction from the parting line (717) from the left wall (42) to the supply section (33) is called a first distance (D1). The distance along the left-right direction from the parting line (717) from the right wall (43) to the supply section (33) is called a second distance (D2). The first distance (D1) is longer than the second distance (D2).

The utility model provides a kind of stainless steel pipe automatic punching device, including main box, U-shaped plate and closure plate, main box front side lower end is equipped with through slot, trapezoidal plate is installed in main box inner bottom, and the left and right sides of main box are equipped with multiple through slots respectively, and the left and right ends of the top of main box are equipped with two guide slots respectively, servo motor is installed in the left side of U-shaped plate, and servo motor output shaft penetrates the left wall of U-shaped plate, and screw rod is installed in the end of servo motor output shaft, and the left and right ends below closure plate are equipped with protrusions respectively, and handle is fixedly connected in the front end of closure plate, and the left and right ends of the rear side of closure plate are fixedly connected with magnetic block respectively, the utility model structure is reasonable, practicality is good, set up protection structure can shield most chippings, and waste material is collected conveniently, subsequent utilization is convenient, material waste is reduced, and the cleaning burden of surrounding environment after punching work is completed is reduced simultaneously.

The utility model relates to a kind of negative pressure weighing chamber for ice bor scattering, belong to negative pressure weighing chamber technical field, including box, the inner top wall of the box is equipped with the weighing chamber body that can provide stable space to ice bor scattering and weigh, the inner left wall of the box is equipped with the air flow component that is powered for gas flow, the top of the weighing chamber body is equipped with the adjustment component that can control the size of air intake speed, the inner bottom wall of the box and below the weighing chamber body is equipped with the first filter component that carries out primary filtration to air, the inner left wall of the box is equipped with the secondary filter component that carries out further filtration to air.The negative pressure weighing chamber for ice bor scattering, by the cooperation of first electric fan, secondary electric fan and adjustment component, can guarantee the uniformity of pressure difference while improving air outlet, to better meet the actual needs of ice bor scattering, improve weighing stability, by the cooperation of first filter component and secondary filter component, can effectively filter and sterilize air.

The utility model discloses a production injection molding machine mould locking structure relates to injection mould technical field. The utility model discloses a mould body, and the mould body includes fixed mode, and the right wall of fixed mode is equipped with the removal mode, and the inside of the slot is inserted with the plug -in strip of left wall length greater than right wall length, and the upper portion of rectangular sheet is equipped with pressure sensor, and the connecting strip of the clearance cooperation of the removal mode is included to the removal mode, and the inside of the recess is equipped with the push plate fixed with connecting strip, and the right -hand member of connecting strip is equipped with the removal strip of left wall length greater than right wall length fixedly, and the lower portion of removal strip is equipped with the vertical board of left wall length less than right wall length, and the lower portion of vertical board is equipped with electric telescopic handle. The utility model discloses a pressure sensor detects the pressure and makes controller control hydraulic cylinder stop working, makes the removal mode be in proper die closing position, and through vertical board, makes the removal strip removal drive push plate left and removes injection molding piece from injection molding groove, need not manual removal injection molding piece.

This utility model discloses a movable fixing assembly, relating to the field of track technology, which can solve the problem of moving and fixing equipment on a track. The movable fixing assembly includes rollers, a bracket, and a fixing component. The rollers are adapted to the track; the bracket includes a left plate, a connecting plate, and a right plate connected in sequence, with the left and right plates respectively connected to the two ends of the roller's axle; the fixing component includes a first claw, a second claw, and a claw frame; the left wall of the claw frame is rotatably connected to the left plate via a left pivot, and the right wall of the claw frame is rotatably connected to the right plate via a right pivot. A claw hinge shaft connects the front and rear walls of the claw frame. The first and second claws are hinged together via the claw hinge shaft and pass through the inner side of the claw frame. Adjusting bolts are used to clamp or release the first and second claws on the track. This utility model enables flexible movement and stable fixing of equipment on a track.

This utility model discloses a thin-walled guide sleeve groove cutting device, including a housing. The annular groove on the left wall of the housing is rotatably connected to the annular slip ring on the outer arc surface of a cylinder. A chuck is provided at the right end of the cylinder. A pair of symmetrical guide rods are fixedly connected between the left and right inner walls of the housing. An adjustment platform is slidably connected between the guide rods. An adjustment block is slidably connected to the upper end of the adjustment platform. A cutting blade is provided at the left end of the adjustment block. The device also includes a debris cleaning mechanism. The debris cleaning mechanism includes a bearing, an air pipe, a nozzle, a rotary joint, and a connecting pipe. The air pipes are rotatably connected between the left and right inner walls of the housing via the bearing. The outer wall of the air pipes is provided with evenly distributed nozzles. A rotary joint is provided at the right end of the air pipes. This thin-walled guide sleeve groove cutting device eliminates the need to open the housing door during cleaning, preventing debris from flying out during the cleaning process and reducing manual workload. Multiple nozzles clean the debris, resulting in better cleaning effect.

The utility model relates to related technical field of insect breeding discloses a kind of black soldier fly breeding disc with automatic cleaning function, including frame, the inside rotation of frame is installed with breeding disc main body, and the inside right side of breeding disc main body is slidably installed with limit baffle, the right side of the top of breeding disc main body is fixed with positioning support frame, the right side of the top of breeding disc main body is fixed with fixed plate, the left wall of frame upper is fixed with support plate, and electric push rod is rotatably installed between support plate and fixed plate, the right wall of fixed plate is fixed with servo motor, the left side inside of positioning support frame is rotatably installed with threaded rod, and threaded rod left end is fixedly installed with servo motor output end, the inside left side of breeding disc main body is inserted with breeding disc cleaning scraper, to better the automatic cleaning of the feed and worm manure remaining in the inner wall of breeding disc main body is carried out, so that the feed and worm manure cleaning effect in the inside of breeding disc main body is better.

This item is the interior of an exhibition room. Shelving units are installed along three sides of the interior space (left, right, and back walls), extending continuously from the floor to near the ceiling. Each shelving unit is mounted along the wall and contains multiple box-shaped storage compartments with lids. These compartments are arranged regularly both horizontally and vertically. Each compartment is composed of equally spaced horizontal shelves and vertical dividers, providing dimensions that allow for the stable placement of stored or displayed items. By arranging the shelves in three directions, users can perceive the stored items from multiple angles while maintaining a sense of unity throughout the space.

The utility model discloses an air conditioner, the air conditioner includes: casing and ventilation heat exchange component, the length direction of casing is up and down direction, one of left wall surface and right wall surface of casing is first side wall, and the other is second side wall, and the air outlet of air conditioner forms on first side wall and / or the front wall surface of casing, and the intersection of second side wall and at least one of rear wall surface and front wall surface of casing forms into chamfered corner, and at least part of the air inlet of air conditioner forms on chamfered corner, ventilation heat exchange component is located in casing, and is used to inhale airflow from air inlet, and makes airflow send out from air outlet after heat exchange with airflow. According to the air conditioner of the utility model, when being applied to wall corner, the rear wall can be set to face rear wall, the second side wall can be set to face side wall, the air inlet is set on chamfered corner, the air inlet is not easy to be blocked by wall, and it is favorable to improve air intake.

This utility model relates to the field of plastic masterbatch production technology, and in particular to a plastic masterbatch feeding device. It includes a feeding box and a feeding hopper, with the feeding hopper connected to the upper left side of the feeding box. A rotating rod is located inside the feeding box below the feeding hopper, and striking plates are fixed around the perimeter of the rotating rod. A ventilation mesh plate is installed inside the feeding box. A feeding pipe is connected to the right end of the feeding box, and the right end of the ventilation mesh plate extends into the feeding pipe. A support block is fixed at the bottom of the feeding pipe, and the upper end of the support block is hinged to the lower right side of the ventilation mesh plate. A support plate located below the ventilation mesh plate is fixed to the left wall inside the feeding box, and a spring connects the support plate and the ventilation mesh plate. This utility model improves the thoroughness of drying the plastic masterbatch and effectively ensures comprehensive drying. It facilitates continuous feeding and drying of the plastic masterbatch into the feeding box, effectively ensuring feeding efficiency.

The utility model provides a kind of dechlorination device for industrial grade mixed oil, comprising: base, the base right end installs pusher;Box, with base upper end connection;First drive equipment, with box inside left wall connection, the output shaft of first drive equipment extends out box left side;Dechlorination tank, with the output shaft left end of first drive equipment connection;Cover plate, with dechlorination tank upper end connection, the cover plate cross section is narrow upper wide conical shape;Inlet and outlet cylinder, with cover plate upper end intercommunication arrangement;Filter screen, with inlet and outlet cylinder inner connection;Press wheel, with filter screen upper end adhesion;Stirring element, with dechlorination tank inner connection, the stirring element passes through cover plate, inlet and outlet cylinder and filter screen and is rotationally connected with press wheel;Sealing element, with stirring element connection, this design realizes the pretreatment to material and the up-down circulation turnover to material in dechlorination process, effectively reduce the probability that mixed oil appears dechlorination incomplete due to caking and other factors, effectively guarantee dechlorination effect and quality.

This utility model discloses a modular combined power distribution protection and control device, including a modular power distribution controller. A left assembly and a right assembly are mounted on either side of the modular power distribution controller. The left assembly includes a left wall, and a first buffer assembly is movably disposed on the side of the left wall away from the right assembly. The right assembly includes a right wall, and a second buffer assembly is movably disposed on the end of the right wall away from the left assembly. This utility model uses the left and right assembly to assemble the modular power distribution controller. The first and second buffer assemblies are installed on the left and right assembly, with their tops higher than the modular power distribution controller. This ensures that even if the modular combined power distribution protection and control device falls during use, the first and second buffer assemblies can withstand the external force.

This utility model relates to the field of mobile shelving technology and discloses a mobile shelving buffer device, including a fixed frame, the fixed frame including a frame body and a turntable, the turntable being installed on the outer side of the frame body, and a buffer structure including a groove, a buffer plate, and a protective pad. The right wall of the frame body has a groove, the inner side of the groove has a buffer plate, the outer wall of the buffer plate has a protective pad, and the left wall of the buffer plate has multiple connecting columns. The connecting columns pass through the fixed groove and are connected to a sliding plate. The sliding plate is located inside a storage slot, and the storage slot is located inside the frame body. This utility model avoids direct collisions with hard metal, prevents scratches and deformation of the frame body, and also avoids sharp impact noises that interfere with the office and reading environment. It provides double buffering and prevents spring rebound, thus preventing the frame body from shifting after buffering.

The utility model discloses a kind of coating low-temperature curing devices, more specifically in coating curing technical field, including base, the right side fixedly connected with driving mechanism in protective assembly interior, the intermediate position rotationally connected with driven mechanism in protective assembly interior, the left end and right end upper portion of working chamber outer surface is fixedly connected with refrigeration assembly symmetrically, the left wall and right wall fixedly connected with exhaust component symmetrically in working chamber inner cavity.The utility model said a kind of coating low-temperature curing device, driving mechanism can drive the effect of rotation of driven mechanism, driven mechanism can drive the effect of uniform rotation of guiding mechanism and bearing mechanism, under the action of bearing mechanism, workpiece can be carried out to bear, and the effect of temperature in working chamber inner cavity can be adjusted by refrigeration assembly, the effect that two refrigeration assemblies adjusted low-temperature air can be uniformly discharged to working chamber inner cavity by exhaust component, improve the practicability of device.

To improve the efficiency of engine maintenance and other related tasks. [Solution] The engine cover 11 that covers the outboard motor engine comprises a left wall portion 12 that covers the left side of the engine, a right wall portion that covers the right side of the engine, a front wall portion 14 that covers the front of the engine, a rear wall portion 15 that covers the rear of the engine, and an upper wall portion 16 that covers the top of the engine. The rear wall portion 15 is detachably connected to the portion of the engine cover 11 that includes the left wall portion 12, the right wall portion, the front wall portion 14, and the upper wall portion 16. By separating the rear wall portion 15 from the portion of the engine cover 11 that includes the left wall portion 12, the right wall portion, the front wall portion 14, and the upper wall portion 16, a part of the engine can be exposed.

This invention provides a storage case that allows for smooth adjustment of the storage length by forming multiple overlapping oval rings between a single flexible wire and adjusting the length of the rings. [Solution] Between the flexible wires extending to the left and right, there are left and right bending rings 30a, 30b and an oval winding ring 50 with one and a half or more turns on the left and right sides of the extension 2 between them. The left bending ring 30a has a peripheral wall surrounding it, and on its left wall is a left outlet for the left end of the flexible wire, and on its right wall is a left opening 7au, 7ad for the extension, and a bending roller rotatably supported by a rotating guide means between its front and rear walls is a left bending ring case 4a. The right bending ring 30b has a peripheral wall surrounding it, and on its right wall is a right outlet for the right end of the flexible wire, and on its left wall is a right opening 7bu, 7bd for the extension, and a bending roller rotatably supported by a rotating guide means between its front and rear walls is a right bending ring case 4b. Multiple overlapping extensions 2 are stored in an orderly manner between the left and right bending ring cases 4a, 4b so that they can be extended and retracted.

We provide combustion equipment that achieves low NOx emissions. [Solution] The combustion equipment comprises a furnace body equipped with a stoker, a furnace into which the exhaust gas after combustion flows, a primary combustion zone formed below the furnace inside the furnace body, a secondary combustion zone formed below the furnace above the primary combustion zone, and a nozzle that supplies a portion of the exhaust gas discharged from the furnace body as a swirling flow generating gas. The nozzle is positioned eccentrically toward the right wall or the left wall side of the rear wall, rather than the center of the right wall and the left wall, so that the swirling flow generating gas is injected from the rear wall into the primary combustion zone.

This utility model discloses an assembly mold for rubber hose production, relating to the field of rubber hose manufacturing technology. The utility model includes a mold body comprising an upper mold and a lower mold fitted below it. The upper and lower molds are symmetrically fitted with outer shells. Both the left and right side walls of the upper and lower molds have abutment grooves, and bolts are threadedly connected to the side walls of the outer shells at the locations of the abutment grooves. A water pump is located on the left side of a water tank. A connecting pipe and a left tee pipe are fixed to the inlet and outlet ends of the water pump, respectively. The right end of the connecting pipe is fixedly connected to the lower side of the water tank, and the other two ends of the left tee pipe are fixedly connected to the left wall of the outer shell. A right tee pipe is fixedly installed on the right wall of the water tank, and the other two ends of the right tee pipe are fixedly connected to the right wall of the outer shell. This utility model achieves rapid assembly and disassembly of the upper and lower molds through the cooperation of the outer shells, abutment grooves, and bolts. Furthermore, the water flow from the pump absorbs the heat from the upper and lower molds, achieving cooling efficiency.

This utility model discloses a knurling mechanism for a motor shaft, including a machine tool. A slide carriage is slidably connected to a slide rail inside the machine tool, and a three-jaw chuck is installed on the left wall of the machine tool. The knurling mechanism includes a support frame, an annular seat, threaded cylinders, studs, a synchronous seat, knurling wheels, and a drive assembly. The annular seat is mounted on the upper side of the slide carriage via two support frames. Three evenly distributed threaded cylinders are rotatably connected inside the annular seat via bearings. This motor shaft knurling mechanism employs a three-set knurling wheel design to accelerate the knurling speed of the motor shaft. Simultaneously, the three sets of knurling wheels are distributed in an equilateral triangle around the outer side of the motor shaft. The three sets of knurling wheels move the same distance through a transmission element, allowing the knurling pressure applied to the motor shaft by each knurling wheel to cancel each other out, preventing axial wobbling of the motor shaft due to knurling compression, and effectively improving the rotational stability of the motor shaft during the knurling process.

To improve the efficiency of engine maintenance and other related tasks. [Solution] The engine cover 11 covering the outboard motor engine comprises a left wall portion 12 covering the left side of the engine, a right wall portion 13 covering the right side of the engine, a front wall portion 14 covering the front of the engine, a rear wall portion 15 covering the rear of the engine, and an upper wall portion 16 covering the top of the engine. The upper wall portion 16 is detachably connected to the portion of the engine cover 11 that includes the left wall portion 12, the right wall portion 13, the front wall portion 14, and the rear wall portion 15. By separating the upper wall portion 16 from the portion of the engine cover 11 that includes the left wall portion 12, the right wall portion 13, the front wall portion 14, and the rear wall portion 15, an opening is formed on the top of the engine cover 11 that allows a user to touch the engine.

This utility model discloses an adaptive multi-copper busbar low-voltage distribution cabinet, relating to the field of power equipment technology. It includes an adaptive distribution cabinet with a cabinet body. A proximity switch is fixed to the left wall inside the cabinet body. A thermometer is located to the left of the proximity switch. A rubber sleeve is provided on the lower end of the thermometer, and a threaded sleeve is provided on the outside of the rubber sleeve. A threaded cap is threadedly connected to the outside of the threaded sleeve. Reinforcing mechanisms are provided at the rear ends of both the left and right side walls of the cabinet body. Each reinforcing mechanism includes a mounting plate fixed to the cabinet body. A screw is fixed to the rear wall of the mounting plate, and a threaded sleeve is threadedly connected to the outside of the screw. A circular plate is provided on the outside of the rear end of the threaded sleeve. This utility model utilizes the cooperation of the thermometer and proximity switch to activate a cooling fan when the temperature reaches a preset range, achieving adaptive cooling of the cabinet's internal temperature. Furthermore, the reinforcement mechanisms reinforce the upper side of the cabinet, reducing the probability of damage at the connection between the multi-copper busbar low-voltage distribution cabinet and the mounting platform.

This utility model discloses a low-noise air-to-water cooling unit with suction-type cooling, belonging to the technical field of inverter cooling devices. It includes an indoor inverter with multiple exhaust fans mounted on top. The exhaust ducts of the fans are connected to a ductwork. The right end of the ductwork extends through the right side wall and is equipped with an electric damper. A rainproof louvered fresh air filter is embedded in the left wall of the high-voltage inverter. The electric damper and the rainproof louvered fresh air filter open and close synchronously. The cooling device includes an outdoor enclosure connected to the return air inlet of the ductwork. Inside the enclosure, a heat exchanger and an evaporator are installed sequentially from right to left. A baffle plate connected to the inner wall of the enclosure is located on the right side of the heat exchanger. A shell-and-tube heat exchanger and a compressor are installed within the space formed by the baffle plate and the inner wall of the enclosure. A fan connected to the left side of the enclosure is embedded in the right wall of the inverter. This utility model can solve problems such as high temperature, negative pressure, dust, and noise, and has an automatic emergency handling function in case of cooling device failure.

The utility model relates to fluorite powder technical field, the utility model provides a reciprocating cycle shaking type fluorite powder processing fluorite powder filter device, it includes the box, the box inner chamber rear wall is installed with the positioning assembly, fixedly connected with the filter plate on the positioning assembly, the filter plate bottom end and is close to right -end installation has vibration subassembly, the box right -end installation has drive assembly, the box inner chamber left wall is fixedly connected with the collecting box, the box left -end installation has the collection subassembly, driving driven gear with driving gear makes driven shaft rotate, driven shaft drives eccentric shaft rotation, eccentric shaft is under the limitation of ball bearing and drives support frame, thereby change support frame and filter plate contact point's position, material is constantly jumping, loose on the filter surface, reduces the accumulation and blockage of particle on the filter material surface, can maintain more stable filtration rate. Through the above technical scheme, the technical problem that fluorite powder filtration is prone to blockage in the related art is solved.

This invention discloses a crystallizer tube removal device, comprising a cylinder, a moving device, a frustum, and multiple clamping assemblies. The output end of the moving device is connected to the left wall of the frustum. The clamping assemblies include a fixed plate, a first gear, a second gear, a third gear, a left arm, and a right arm. A first rotating shaft, a second rotating shaft, and a third rotating shaft are rotatably mounted on the fixed plate. The first gear is fixed on the first rotating shaft, the second gear is fixed on the second rotating shaft, and the third gear is fixed on the third rotating shaft. The first gear meshes with the second gear, and the second gear meshes with the third gear. The left arm is connected to the first rotating shaft, and a baffle is connected to the left end of the left arm. The right arm is fixed to the third rotating shaft, and a clamping plate is connected to the right end of the right arm. The right wall of the baffle contacts the left wall of the frustum, the circumferential wall of the frustum contacts the inner wall of the left arm, and the inner wall of the clamping plate contacts the outer circumferential wall of the crystallizer tube. This device can effectively reduce the difficulty of crystallizer tube removal, reduce the workload of workers, reduce costs, and improve economic efficiency.

A high-strength photovoltaic frame and its photovoltaic module are disclosed. The photovoltaic frame includes: a cavity having an upper wall, a right wall, and a lower left wall connected to each other; a diagonal brace wall passing through the intersection of the upper wall and the right wall, and connected at both ends to a vertical rib rising from the upper wall and a lower right wall extending from the lower left wall, respectively; the diagonal brace wall, the vertical rib, and the upper wall enclose and define a triangular area I, and together with the right wall and the lower right wall, define a triangular area II. The vertical rib rises from the middle of the upper wall. An overflow groove base and an overflow groove extend from the connection point of the vertical rib and the diagonal brace wall on one side, spaced apart from the upper wall, forming an interconnected overflow groove base and overflow groove, creating a receiving groove with the vertical rib as the groove bottom and the opposing upper wall, overflow groove base, and overflow groove as groove walls. A mounting protrusion of predetermined thickness is formed on a mounting wall extending from the lower right wall relative to the diagonal brace wall. Mounting holes are formed in the mounting protrusion. This enhances the structural strength.