321results about How to "Improve assembly stability" patented technology

The invention relates to a wide-view C-shaped arm X-ray machine and an imaging method thereof.The wide-view C-shaped arm X-ray machine comprises a main machine, a C-shaped arm, an X-ray source, a flat panel detector, a first telescopic mechanism, a first translation mechanism and a first swing mechanism, the first telescopic mechanism is arranged at one end of the C-shaped arm and used for driving the first translation mechanism and the flat panel detector to stretch out and draw back, and the first swing mechanism is arranged at the other end of the C-shaped arm and used for driving the X-ray source to swing. The first translation mechanism is arranged on the first telescopic mechanism and used for driving the flat panel detector to translate, and the first swinging mechanism is arranged at the other end of the C-shaped arm and used for driving the X-ray source to swing so as to follow the position of the flat panel detector, so that X-rays emitted by the X-ray source can fall on the flat panel detector. The flat panel detector can move to different imaging positions to obtain images at different positions, and the images are synthesized into a larger image, so that the area of an imaging region is greatly increased, the observation view of a doctor is expanded, and the efficiency and safety of an operation are improved.

The utility model relates to a photovoltaic tile installation structure, a photovoltaic tile assembly and a roof photovoltaic system. The photovoltaic tile installation structure comprises a first frame used for combining a second structural member; the second structural part is used for being detachably connected with the attachment surface, and the second structural part is provided with a second clamping part detachably connected with the attachment surface; and the first limiting piece penetrates into the first frame from outside to inside and is used for keeping the connection state of the second clamping part and the attachment surface. The assembly difficulty of the photovoltaic tile assembly can be reduced.

The invention provides an optical imaging lens. The optical imaging lens comprises a lens barrel, and a lens group and a spacing element group which are arranged in the lens barrel, the lens group sequentially comprises a first lens to a fifth lens from an object side to an image side along an optical axis direction, and the object side surface of a second lens is a concave surface; the spacing element group at least comprises a first spacing element; the first spacing element is positioned between the first lens and the second lens and is in contact with the image side surface part of the first lens; the air interval T12 of the first lens and the second lens on the optical axis and the maximum thickness CP1 of the first interval element meet the following condition: T12 / CP1 is more than or equal to 2.67 and less than or equal to 3.45; the curvature radius R3 of the object side surface of the second lens and the inner diameter d1m of the image side surface of the first spacing element satisfy the following relation:-2.76 < = R3 / d1m < =-2.14. The optical imaging lens solves the problem that stray light is serious in order to meet the assembly stability requirement in an optical imaging lens in the prior art.

The utility model discloses a dust collector automatic dust collection charging seat with a display screen, which can display the operation condition of equipment in real time and improve the visualization of the equipment through the design of the display screen, so that corresponding parts can be overhauled and adjusted in time, and the efficient and stable operation and the convenience of operation and use of the dust collection charging seat are ensured. The charging structure is provided with the charging frame with the clamping opening and the conical guide groove, the positioning stability during charging of the dust collector can be improved, the charging assembly avoids the problem of electric shock caused by mistaken touch of the conducting strip through the designed linkage piece and the micro switch at the corresponding position, and the use safety of the charging assembly is improved; and the top of the dust collection structure is laterally assembled and matched with a bottom positioning structure which is embedded, assembled and clamped with an upper positioning ring and a lower positioning ring, and an air outlet filter piece embedded assembly structure provided with a pull rod, so that the convenience of disassembly and assembly operation of the dust collection filter structure is improved. Compared with a common dust collection charging seat, the dust collection charging seat can achieve the functions of efficient dust collection, safe charging and convenient disassembly, assembly and maintenance.

The invention provides an optical lens. The optical lens comprises a lens barrel, and first to seventh lenses and a spacing element group which are arranged in the lens barrel. The spacing element group at least comprises a sixth spacing element, and the sixth spacing element is located between the sixth lens and the seventh lens and makes contact with the image side face part of the sixth lens; the curvature radius R12 of the image side surface of the sixth lens and the outer diameter D6s of the object side surface of the sixth spacing element meet the following condition:-2.0 < = D6s / R12 < =-1.56; the curvature radius R13 of the object side surface of the seventh lens and the outer diameter D6m of the image side surface of the sixth spacing element satisfy the following relation:-2.47 < = D6m / R13 < =-1.81. According to the invention, the problem of stray light caused by the optical lens in the prior art in order to meet the assembly stability is solved.

The utility model discloses a pick-up lens, the pick-up lens comprises a lens barrel, and a lens group and a bearing member group which are arranged in the lens barrel, and the lens group sequentially comprises a first lens with positive focal power, a second lens with negative focal power, a third lens with positive focal power and a fourth lens with negative focal power from an object side to an image side along an optical axis; the second lens has negative focal power; the third lens has positive focal power; the fourth lens has negative focal power; the fifth lens has focal power; the sixth lens has positive focal power; the seventh lens has negative focal power; the bearing piece set comprises a sixth bearing piece which is arranged between the sixth lens and the seventh lens and at least partially makes contact with the image side face of the sixth lens. The maximum height L of the lens barrel in the optical axis direction and half ImgH of the diagonal length of an effective pixel area on the imaging surface of the camera lens meet the condition that L / ImgH is greater than 0.7 and less than 1.5; the effective focal length f of the pick-up lens and the curvature radius R12 of the image side surface of the sixth lens meet the condition that f / R12 is more than-0.5 and less than 0; the effective focal length f6 of the sixth lens and the outer diameter D6s of the object side face of the sixth bearing piece meet the condition that f6 / D6s is larger than 0.6 and smaller than or equal to 1.1.

The invention provides an optical imaging lens, the optical imaging lens has four lenses with focal power, the optical imaging lens comprises a lens group, a spacing element group and a lens barrel, and the lens group comprises a first lens, a second lens, a third lens, a fourth lens and a fourth lens which are sequentially arranged at intervals from the object side to the image side of the optical imaging lens; the lens group and the spacing element group are accommodated in the lens barrel; wherein the effective focal length f4 of the fourth lens and the axial distance T34 between the image side surface of the third lens and the object side surface of the fourth lens meet the condition that f4 / T34 is more than or equal to-231.04 and less than or equal to-105.74; and the effective focal length f4 of the fourth lens, the central thickness CT4 of the fourth lens and the maximum thickness CP3 of the third spacing element meet the condition that f4 / (CP3 + CT4) is more than or equal to-6.58 and less than or equal to-4.35. According to the optical imaging lens, the problem of how to consider forming and assembling stability of two lenses at the rear end in the prior art is solved.

The utility model relates to a photovoltaic tile fixing structure, a photovoltaic tile assembly and a roof photovoltaic system. The photovoltaic tile fixing structure comprises a fixing piece used for being installed on an attachment surface; the assembly part is connected with one end of the fixing part, a containing cavity is formed in the assembly part, and a frame of the photovoltaic tile is embedded in the containing cavity; and the anti-falling mechanism is arranged on the fixing piece and / or the cavity wall of the accommodating cavity, and the anti-falling mechanism is used for preventing the frame from falling off. Therefore, on one hand, the photovoltaic tile fixing structure is relatively simple in structure, and when the photovoltaic tile is assembled, only the frame of the photovoltaic tile needs to be embedded into the accommodating cavity, so that the installation difficulty of the photovoltaic tile is reduced; on the other hand, the photovoltaic tile fixing structure can be assembled independently, adjustment can be conducted according to the actual assembling position of the photovoltaic tile, and standardization of the photovoltaic tile fixing structure can be achieved; on the other hand, the assembly stability of the photovoltaic tile can be improved, so that the wind uplift resistance of the photovoltaic tile is improved; and on the other hand, independent disassembly and assembly of the photovoltaic tile can be realized.

The invention provides an optical system. The optical system comprises a lens barrel, a lens group and at least one spacer, the lens group and the spacer are arranged in the lens barrel, the lens group is composed of five lenses, and the five lenses are the first lens, the second lens, the third lens, the fourth lens and the fifth lens; the at least one distance piece comprises a second distance piece, a third distance piece and a fourth distance piece; f3 / (EP2 + CT3) is greater than or equal to-3.23 and less than or equal to-3.05; f4 / EP34 is more than or equal to-17.45 and less than or equal to-13.71. The problem that a five-piece optical system in the prior art meets the requirement for imaging size control, and consequently the assembling stability is poor is solved.

The utility model discloses a television cabinet convenient to combine and assemble, which comprises a cabinet body, a cabinet door is movably arranged on the outer surface of the cabinet body, the television cabinet further comprises a transverse clamping assembly, the clamping assembly comprises notches formed in the two sides of the bottom of the cabinet door, clamping blocks are movably inserted into the notches, and the transverse clamping assembly is connected with the cabinet door. The two sets of cabinet bodies are clamped and spliced in the horizontal direction through the notches and the clamping blocks, the adjusting assemblies are arranged on the outer surfaces of the bottoms of the cabinet bodies and used for adjusting the positions, located in the notches, of the clamping blocks, and the longitudinal clamping assemblies are arranged on the outer surfaces of the bottoms of the cabinet bodies and used for adjusting the positions, located in the notches, of the clamping blocks. The longitudinal clamping assembly comprises longitudinal clamping grooves formed in the two sides of the cabinet body. The television cabinet convenient to combine and assemble has the technical effects that the assembling stability is high, and the assembling is more diversified.

The utility model belongs to the technical field of tooth correction, and particularly relates to an orthodontic bracket and an orthodontic appliance, which comprise a base, a groove, a first locking piece, a second locking component and at least two bracket wings, the bracket wings are arranged on the base side by side, and an assembly gap is formed between every two adjacent bracket wings; the groove penetrates through the upper ends of all the bracket wings and is used for mounting an arch wire; the first locking piece is connected to the bracket wing and can extend to the groove; a limiting cavity is formed in the first locking piece, and the limiting cavity is communicated with the groove; the second locking assembly is connected to the assembling gap and used for being connected with an arch wire in a clamped mode. According to the utility model, the assembly stability with the arch wire can be improved, and the installation shaking and falling of the arch wire are reduced, so that the structural stability is improved, and the use safety is guaranteed.

The utility model provides an underwater storage tank. The underwater storage tank comprises a structural cabin, a flexible storage bag and an oil guide protection cylinder. The flexible storage bag is located in the structural cabin and can deform under the action of external force, the oil guide protection barrel is arranged in the flexible storage bag in a penetrating mode, and an oil inlet pipeline and an oil outlet pipeline are arranged in the oil guide protection barrel. The bottom of the oil guide protection cylinder is through, a plurality of through holes are formed in the side wall of the oil guide protection cylinder, an outlet of the oil inlet pipeline is communicated with an inner cavity of the flexible storage bag through the through holes, and an inlet of the oil outlet pipeline is communicated with the inner cavity of the flexible storage bag through the bottom of the oil guide protection cylinder and the through holes; an inlet of the oil inlet pipeline and an outlet of the oil outlet pipeline are both located outside the structural cabin. A water inlet and a water outlet are formed in the side wall of the structural cabin. The problems of seawater pollution and resource waste easily caused in the prior art are solved.

The invention provides an optical imaging lens. The optical imaging lens can be used for near-infrared band imaging, the optical imaging lens comprises a lens barrel, a lens group and a spacing element group, and the lens group comprises a first lens, a second lens, a third lens and a fourth lens; the spacing element group comprises a first spacing element and a second spacing element, and the effective focal length f2 of the second lens, the center thickness CT2 of the second lens on the optical axis and the distance EP12 between the image side surface of the first spacing element and the object side surface of the second spacing element in the extension direction of the optical axis meet the condition that f2 / (CT2 + EP12) is greater than or equal to 1.03 and less than or equal to 2.88; the curvature radius R3 of the object side surface of the second lens and the outer diameter D1m of the image side surface of the first spacing element satisfy the following relation:-1.93 < = R3 / D1m < =-0.41. The optical imaging lens solves the problem of serious stray light caused by improvement of assembly stability of an optical imaging lens in the prior art.

The utility model discloses an optical imaging device. The optical imaging device comprises a lens cone, an eight-piece lens group and a spacer group, wherein the eight-piece lens group and the spacer group are arranged in the lens cone; the eight-piece lens group comprises a first lens with positive focal power, a second lens with positive focal power, a third lens with negative focal power, a fourth lens with focal power, a fifth lens with focal power and a sixth lens with positive focal power which are sequentially arranged from the object side to the image side along the optical axis; the seventh lens has positive focal power; the eighth lens has negative focal power; the spacer group comprises a fifth spacer which is arranged on the image side surface of the fifth lens and is in contact with the image side surface of the fifth lens, and a sixth spacer which is arranged on the image side surface of the sixth lens and is in contact with the image side surface of the sixth lens; the maximum length L of the lens barrel in the direction of the optical axis and the total effective focal length f of the optical imaging device meet the following conditions: 1.40 lt; l / flt; 1.80, 1.80; an interval EP56 between the fifth spacer and the sixth spacer along the optical axis and an air interval T56 between the fifth lens and the sixth lens on the optical axis satisfy: 3.00 lt; eP 56 / T56lt; 28.00, 28.00, 28.00.

The utility model discloses a welding structure of a connecting pipe, which belongs to the technical field of pipeline connecting fittings, and comprises a pipe body and a seat body, the seat body is provided with an assembly hole, the assembly hole is provided with a positioning step, the pipe body extends into the assembly hole and is positioned on the positioning step, the outer wall of the pipe body and / or the assembly hole are / is provided with a flow guide groove for solder to pass through, and the flow guide groove is communicated with the seat body. The rear end of the pipe body and / or the positioning step are / is provided with interval grooves for solder to pass through, and the flow guide grooves are communicated with the interval grooves. According to the structure, the assembling stability of the pipe body and the base body can be improved, the side wall and the bottom between the pipe body and the base body can be filled with welding flux through mutual communication of the flow guide grooves and the interval grooves, the problems that in the prior art, the pipe body and the base body are prone to insufficient soldering, leakage and even disengagement are solved, and the service life of the pipe body is prolonged. And the finished connecting pipe can be judged to be qualified as long as the upper part and the lower part of the finished connecting pipe are welded and sealed, so that the production efficiency and the qualification rate judgment efficiency of the finished connecting pipe are improved.

An optimized damping opening and closing structure of a furniture hinge comprises a hinge cup and a connecting arm that are hinged to each other for opening and closing through a hinge arm assembly, wherein the hinge arm assembly comprises at least an inner hinge arm, which is hinged to the hinge cup and the connecting arm respectively, and an action portion is extended thereon; a damper is arranged on the connecting arm, and the damper comprises at least a cylinder body, and a groove portion is arranged on the cylinder body; when the hinge cup is hinged to open and close relative to the connecting arm, the inner hinge arm acts on the groove portion of the cylinder body through the action portion, and the cylinder body resets and slides and / or compresses and slides on the connecting arm through the interaction between the groove portion and the action portion, so as to realize automatic reset of the damper and / or damping closing of the furniture hinge. The present invention has the characteristics of simple and reasonable structure, reliable performance, high flexibility of use, low manufacturing cost, long service life, easy production, easy realization, exquisite appearance and high safety, and strong practicality through the improvement of the above structure.

The invention discloses a manufacturing method of an electric endoscope linear type cutting anastomat. The manufacturing method comprises the following steps: S1, preparing raw materials; s2, assembling a handle assembly, a gun barrel assembly, a battery assembly, a cartridge nail assembly, a steering positioning assembly and a front head assembly; s3, carrying out general assembly on the electric endoscope linear type cutting anastomat, namely sequentially completing the assembly of a steering positioning assembly and a main body, the assembly of a front head assembly, parts and the main body, the assembly of a front head outer tube connecting and fixing part, the assembly of a buckle outer wrapping part, the assembly of a gun barrel assembly and a handle assembly, the assembly of a support frame end cover and the assembly of a shell; and S4, packaging the electric endoscope linear type cutting anastomat which is generally assembled. According to the assembly method, the assembly accuracy of a worker can be guaranteed by refining the assembly of a plurality of parts, the method is easy to implement and simple and convenient to operate, the assembly efficiency is improved, and the technical problem and difficulty that the assembly efficiency of the electric endoscope linear type cutting anastomat is not high are solved.

The utility model relates to the technical field of automobile part manufacturing, and discloses a female-die-free stamping die for processing an anti-collision beam mounting plate, which comprises a lower die holder, a positioning supporting part is arranged on the lower die holder, a supporting boss is arranged on the positioning supporting part corresponding to a reserved part of a vertical rib of the mounting plate according to the shape, and the female-die-free stamping die further comprises a lower die holder, the lower die base is provided with a male die corresponding to the positioning supporting part, and the male die is provided with a shearing notch corresponding to the supporting part of the positioning supporting part. By arranging the male die and the positioning supporting part which are matched with each other, efficient punching and shearing operation of the vertical rib of the mounting plate is realized, and the problems of long processing time, low efficiency and high processing cost caused by processing the part by adopting a numerical control machine tool are solved; a positioning groove is formed in the positioning supporting part, so that the positioning precision and the assembly stability of the mounting plate and the positioning supporting part are improved, and the machining precision is guaranteed; and two sets of positioning supporting parts and convex dies are arranged in a mirroring manner, so that the machining efficiency is further improved, and the structural stress is optimized.

The invention discloses a use method of an optical fiber array pre-assembly tool. A first positioning block is installed, an adjusting pin is pressed down, a pressing needle is lifted, one side of the first positioning block abuts against the side wall of a stop table, the first positioning block is placed on an installation base, an ejector pin slides till the ejector pin abuts against the first positioning block, and a first optical fiber array is installed in an installation groove; a second positioning block is installed, a clamping jaw air cylinder is opened, the second positioning block is placed above the first positioning block, a second optical fiber array is installed in the buckling groove, and the clamping jaw air cylinder is gathered to enable the two clamping blocks to clamp the second positioning block; adjusting the front end surfaces of the coplanar first positioning block, the second positioning block, the first optical fiber array and the second optical fiber array to be arranged in the same plane; the pressing needle is fixed to loosen the adjusting pin; the visual detection device is adjusted to be as high as the first positioning block through fine adjustment, the visual detection device is started, a visual signal transmitted by the visual detection device is observed, and the micrometer knob assembly is adjusted to enable the first optical fiber array and the second optical fiber array to reach preset positions.

This invention discloses an automatic dust collection and charging base for vacuum cleaners with a display screen. The display screen allows for real-time monitoring of the device's operation, enhancing visibility and facilitating timely component inspection and adjustment. This ensures efficient and stable operation and ease of use. The charging structure features a charging rack with a clamp and conical guide groove, improving positioning stability during charging. Designed linkages and micro-switches in the charging components prevent accidental contact with conductive plates, enhancing safety. The dust collection structure includes a bottom positioning structure with upper and lower positioning rings that engage and lock together, and an embedded exhaust filter with a pull rod, improving ease of assembly and disassembly. Compared to common dust collection and charging bases, this design achieves efficient dust collection, safe charging, and convenient assembly and maintenance.

The application provides a high-static-pressure differential pressure gauge convenient to assemble, and belongs to the field of differential pressure gauges, to solve the problem that impurities in the delivered liquid or gas cannot be conveniently filtered and collected, and comprises a gauge body and a connecting pipe, the connecting pipe is installed on the gauge body, a spring is fixedly connected in a rotating disc, the other end of the spring is fixedly connected with a limiting plate, and the limiting plate is fixedly connected with a clamping block. The application is provided with a treatment box; when the connecting pipe is used to deliver liquid or gas, the liquid or gas passes through the treatment box, the residual impurities can be filtered and collected through the internally-installed filter screen, and the adaptability of the gauge body is avoided from being affected by the impurities; when the filter screen needs to be cleaned, the rotating rod can be rotated to drive the first bevel gear to rotate, the first bevel gear can drive the threaded rod to rotate through the second bevel gear, the threaded rod drives the extrusion box to move inward through the moving plate, the extrusion box is separated from the positioning plate, and after being unobstructed, the extrusion box can be taken out for subsequent cleaning and use.

A moving contact assembly, a contact mechanism and a contact unit are provided, the moving contact assembly comprises a rotating shaft and a moving contact bridge arranged in the rotating shaft, two ends of the moving contact bridge are respectively used as moving contact parts, each moving contact part extends out of the rotating shaft along the radial direction of the rotating shaft, the moving contact assembly also comprises a housing, the rotating shaft is rotatably supported in an accommodating cavity of the housing, and the housing is provided with an opening. The shell is provided with two opposite openings, and the openings are communicated with the containing cavity. According to the invention, the moving contact assembly, the contact mechanism, the contact unit and the rotating shaft are assembled in the accommodating cavity of the shell, so that the moving contact assembly forms a whole, the formation of the contact mechanism with a modular structure is facilitated, the assembly is convenient, and the modular development of the disconnecting switch is facilitated.

The invention relates to the technical field of control cable comprehensive detection, in particular to a control cable comprehensive detection device based on multi-parameter fusion, which comprises a bottom mounting seat, arc-shaped housings are movably assembled on two side walls of the bottom mounting seat, and communicated arc-shaped transition grooves are symmetrically formed in the inner side surfaces of the arc-shaped housings; and built-in electric control driving detection blocks are assembled in the arc-shaped transition grooves in the two sides of the bottom mounting seat in a staggered manner. According to the control cable comprehensive detection device based on multi-parameter fusion, the detachable structural design is adopted, so that the device can be conveniently assembled and disassembled, and different control cables can be conveniently switched; by adopting a two-side overturning and clamping mode, the assembling stability and firmness of the control cable are improved; and by means of the self-stabilization type structural design, the installation stability of the equipment can be improved.

The utility model relates to the technical field of optical element assembly, and provides a servo control tool for high-precision installation of a super-large lens, which comprises a base, the top end of the base is fixedly connected with a lens seat support, the top end of the lens seat support is movably connected with a lens seat, the lens seat and the lens seat support are not limited in the horizontal direction, and the lens seat support is movably connected with the lens seat. A lens is installed in the lens base, and a servo actuator is fixedly installed in the middle of the top end of the base. According to the utility model, the descending speed of the lens is accurately controlled through the cooperation of the servo motor and the ball screw, the bearing capacity is stronger, the lens can be ensured not to collide with the lens seat due to too fast descending in the self-centering process, the surface of the lens is prevented from being damaged and deformed, and the screw nut on the ball screw can be ensured to run along a straight line through the cooperation of the linear guide rail and the guide slide block; and the assembly precision and stability are improved.

The utility model relates to the technical field of dust prevention of bending machines, in particular to an automatic dust prevention device for a bending robot gripper library, which comprises a gripper frame main body, the gripper frame body comprises a transversely-arranged bottom frame, lateral stand columns welded and fixed to the two sides of the upper end of the transversely-arranged bottom frame, an inclined supporting pipe, a first cross beam fixed to an inclined supporting frame and a second cross beam fixed to the inclined supporting frame. According to the automatic dustproof device for the bending robot gripper library, the electric control dustproof mechanism is installed above the gripper, manual operation is replaced to achieve automatic dust prevention, and the assembling stability and durability of a clamping jaw are greatly improved; a dustproof device is designed through a mechanical structure, the control structure is more durable and stable, and the device is more suitable for automatic production lines.

A method for manufacturing high-strength, hydrogen-embrittlement-resistant bolts based on microsphere shot peening, and the bolts themselves, are disclosed. The manufacturing method includes: S1, cold heading and thread rolling of alloy structural steel billets to obtain bolt forming parts; S2, surface cleaning of the bolt forming parts, followed by overall surface peening with microspheres driven by high-pressure air; after overall peening, targeted strengthening peening treatment is performed on stress concentration areas such as thread roots, undercut grooves, and flange transition corners to obtain reinforced bolt parts; S3, the reinforced bolt parts are cleaned, dried, and phosphated to obtain finished bolt parts. This design, through a "overall + targeted" composite microsphere shot peening strategy, introduces a uniform residual compressive stress field and a micron-level fine-grained plastic deformation layer on the bolt surface, forming a thicker strengthening layer in stress concentration areas, significantly improving the fatigue strength and delayed fracture resistance of high-strength bolts, while ensuring uniform surface roughness and stable assembly friction coefficient.

The present invention discloses an ultrasonic gas meter module and an ultrasonic flowmeter using the gas meter module. The ultrasonic gas meter module includes: a flow channel upper shell, an air inlet guide structure, an air outlet guide structure, a transducer fixing frame, a transducer fixing cover plate, and a flow channel lower shell connected to the shell substrate of the flow channel upper shell. The air outlet end of the flow channel body and the air outlet guide structure, the transducer fixing frame and the connected transducer fixing cover plate are located in the inner cavity of the flow channel shell. The top wall of the flow channel shell is provided with an air outlet pipe connected to the inner cavity of the flow channel shell. The ultrasonic flowmeter includes: a gas meter shell, an air inlet valve arranged at the air inlet of the gas meter shell, and the aforementioned ultrasonic gas meter module horizontally installed in the gas meter shell; the flow channel shell divides the chamber in the gas meter shell into an air inlet cavity outside the flow channel shell and an air outlet cavity inside the flow channel shell. The ultrasonic gas meter module has a simple structure, convenient loading and unloading of each structure, stable assembly, and can be applied to ultrasonic gas meters of various specifications.

The utility model relates to the technical field of reaction kettles, and discloses a biopharmaceutical reaction kettle which comprises a reaction kettle body, lug seats are fixed on the outer side of the reaction kettle body, a blanking pipe is mounted at the bottom of the reaction kettle body, and supporting legs are fixed at the bottom of the reaction kettle body. Through the arrangement of the auxiliary cleaning mechanism, one end of the rotating frame pokes the moving rod to move back and forth, the anti-falling sliding plate drives the cast iron frame and the rubber column to move back and forth, the rubber column impacts the outer side of the discharging pipe back and forth, adhesion materials can be stripped in an auxiliary mode, and the situation that the purity of the next batch is affected due to residue degradation is reduced; by arranging the stabilizing mechanism, fixing between the mounting sleeve and the corresponding supporting leg is conveniently completed, at the moment, the corresponding faces of the outer shell and the metal support are attached, fixing between the outer shell and the metal support can be completed through bolts, the outer shell is easy to position and easy and convenient to assemble in the assembling process, and the assembling stability of the outer shell is improved.