7033 results about "Ball valve" patented technology

The invention belongs to the technical field of automatic assembly, and discloses an automatic assembly system and method for a large nut of a water turbine ball valve, and the system comprises a mechanical arm, an end effector and an intelligent nut tightening control system. The end effector integrates an electromagnet adsorption mechanism, a servo drive rotating mechanism, a floating compensation mechanism and a visual recognition mechanism, nuts of different specifications are grabbed in a self-adaptive mode through an electromagnet, submillimeter-level accurate positioning is achieved through a laser galvanometer stereo camera, and the assembling posture is automatically adjusted in combination with the floating compensation mechanism. The intelligent control system adopts a staged tightening strategy, performs real-time monitoring through a torque sensor, and has a dual protection mechanism. The hydraulic turbine ball valve large nut assembling machine achieves full-automatic assembling of hydraulic turbine ball valve large nuts, has the advantages of being high in assembling efficiency, high in positioning precision, high in adaptability, reliable in quality and the like, solves the problems that manual assembling is large in labor intensity, many in potential safety hazards, poor in quality consistency and the like, and remarkably improves the assembling quality and efficiency of key parts of a hydropower station.

The invention discloses a self-powered intelligent network connection ball valve for adjusting fluid. The self-powered intelligent network connection ball valve comprises a ball valve body and an intelligent network connection control module arranged on the ball valve body. The ball valve body comprises a ball body, a rotating wheel arranged on the ball body, a transmission shaft connected with the rotating wheel and a generator connected with the transmission shaft. The generator is used for supplying power to the intelligent network connection control module; the intelligent network connection control module comprises a controller; the controller is used for adjusting the valve opening degree of the ball valve body. The pressure and the flow of the valve outlet can be more accurately controlled, and electric power can be provided for the intelligent network connection ball valve.

The present disclosure discloses a valve with dual ball valves, including two ball valves arranged side by side and clamped with each other, wherein each ball valve includes a valve body, a ball body, a valve rod and a handle, clamping structures are respectively and correspondingly arranged on one surfaces of the two valve bodies abutting against each other, and each ball valve further includes a limiting seat, a first anti-misoperation device and a second anti-misoperation device. The first anti-misoperation devices ensure that the handles can be rotated freely only when the two ball valves are in a clamped state. The second anti-misoperation devices ensure that the handles can only be rotated when external force is applied to the handles. Misoperation on the valve is prevented through triple protection.

The invention relates to the technical field of ball valve design and simulation, in particular to a three-dimensional simulation design method and system for a ball valve. The method comprises the following steps: performing reference geometric construction based on a ball valve design specification, and performing geometric parameterization to obtain an initial geometric configuration; importing the initial geometric configuration into a finite element analysis platform, and endowing material attributes to obtain a finite element mesh model; performing ball valve working stress analysis on the finite element mesh model to obtain a stress-strain field; performing model fluid domain grid division according to the initial geometric configuration and the stress-strain field to obtain a fluid domain grid; valve opening change setting is conducted on the fluid domain grids, and a CFD calculation model is obtained; internal flow field transient simulation of the ball valve under different opening degrees is conducted on the CFD calculation model, and fluid dynamic parameters are obtained. The dynamic characteristics of the valve under the complex working conditions are accurately captured, and the working performance of the valve under different working conditions is improved.

A fluid exchanger may exchange a fluid (e.g., coolant) in a reservoir (e.g., vehicle radiator) by removing or withdrawing a first fluid (e.g., old, spent, used, etc.) and by introducing a second fluid (e.g., new, clean, etc.). In some examples, the exchanger includes a valve construction that permits easy and safe transitioning from a first mode in which the fluid in the vehicle is run in a loop (e.g., after a cleaner is introduced) to a second mode in which the fluid is exchanged. In some examples, the exchanger includes a restrictor that stops fluid from flowing when the pressure fails to satisfy a threshold (e.g., where the pressure is below a threshold). In some examples, the exchanger includes a safety valve (e.g., ball valve) in the bottom of the new fluid tank, such that when the tank is empty, the valve will close and reduce the likelihood of unintentionally pushing air into the system (e.g., emptying the reservoir).

A valve sealing structure and a ball valve. The valve sealing structure is applied and connected to a communicating position of an inner cavity (11) of a valve body (1) and a channel (21) of a valve cover (2), and comprises a C-shaped ball body (3) and a PTFE sealing ring (41), the C-shaped ball body (3) is rotatably connected in the inner cavity (11) of the valve body (1), and a first metal sealing ring (31) is arranged on the outer surface of the C-shaped ball body (3); the PTFE sealing ring (41) is mounted at a liquid outlet of the inner cavity (11) of the valve body (1), and the PTFE sealing ring (41) and the liquid outlet of the inner cavity (11) are concentrically arranged; a second metal sealing ring (42) is concentrically arranged on the end surface of the PTFE sealing ring (41) facing away from the C-shaped ball body (3) in the axial direction; an elastic pressing component is provided on the end surface of the second metal sealing ring (42) facing away from the PTFE sealing ring (41), and the elastic pressing component is used for applying to the second metal sealing ring (42) a pre-tightening force in the axial direction toward the PTFE sealing ring (41); and when the C-shaped ball body (3) is in a closed state, the first metal sealing ring (31) and the PTFE sealing ring (41) are concentrically arranged. The valve sealing structure can ensure that reliable sealing performance is always kept at different operating temperatures.

The invention discloses a temperature control ball valve self-adaptive to temperature difference change, and relates to the technical field of valves, the temperature control ball valve comprises a valve seat, a buckling valve piece, a collaboration piece and a valve rod; the valve seat is fixedly connected with the buckling valve piece through a bolt, the valve seat and the buckling valve piece are buckled to form a circulation pipeline, the cooperation piece is arranged above the buckling valve piece, and the valve rod is vertically arranged in the valve seat and the buckling valve piece; by means of the design of the deformability detection assembly, safe and stable operation of the system can be guaranteed for the valve body with the valve rod deformability detection function, faults can be early warned in advance, the deformation condition of the valve rod can be monitored in real time, early warning can be given out in time when tiny deformation of the valve rod begins, and the safety of the valve rod is guaranteed. Workers can take measures in advance, and the serious problems that the ball valve cannot be normally opened and closed and fluid leaks due to further aggravation of deformation of the valve rod are solved, so that safe and stable operation of a whole pipeline system is guaranteed.

In a segmented ball valve for low noise and anti-cavitation applications, a replaceable cartridge is fixed inside and retained by stem and end post. The segment has a machined cylindrical bore with a slide-fit noise cartridge, enabling field replaceability with minor effort & without need of welding or fasteners. The replaceable cartridge also enables use of a fully cylindrical cartridge with greater pressure reduction stages compared to welded-on noise plates on the segment. The segment has a flattened front face resulting in lower Fd enabled by dual flow path in lower openings values thereby attaining higher noise attenuation where the cartridge is not required. The curved plates of the low noise and anti-cavitation cartridge enable: expanding flow resulting in non-impinging jet streams thereby achieving higher noise attenuation in one direction; and converging flow in the opposite direction resulting in reduction of flow energy, and the potential for cavitation for liquids.

The invention relates to the field of hydroelectric generation automation control, discloses an intelligent flow-pressure double closed-loop control method and system for a water inlet ball valve of a water turbine, and aims to solve the technical problems that flow stability and pressure fluctuation suppression are difficult to consider, dynamic response is delayed and working condition adaptability is poor in existing single-loop control. The method comprises the steps that inlet pressure and flow data are collected in real time through a pressure sensor and an ultrasonic flowmeter, a cascade structure of outer ring flow control and inner ring pressure control is constructed in combination with working condition parameters such as the rotating speed of a unit and the opening degree of a guide vane, and a working condition self-adaptive weight distribution module is introduced to dynamically adjust the double-ring gain coefficient; meanwhile, a feed-forward compensation mechanism and an optimal efficiency curve database are fused, and dynamic matching of set values and advanced response of load instructions are achieved. The system comprises a data acquisition unit, a double-closed-loop control unit, a weight distribution unit, an electro-hydraulic servo execution mechanism and a safety interlocking module, and supports microsecond-level gain updating and high-precision valve position control. According to the technical scheme, the adjusting precision and the response speed of the water turbine under the complex working condition are remarkably improved, the actual measurement efficiency is improved by 2.5%-4.8%, the adjusting time is shortened to be within 3 seconds, the positioning precision reaches + / -0.5 degree, and safe and stable operation of the system is guaranteed.

A ball valve according to an exemplary embodiment of the present invention may comprise: an actuator; a housing having an interior space and a plurality of through-holes exposing the interior space, the through-holes including an inlet hole through while a refrigerant flows in, an outlet hole through which the refrigerant flows out, and a connection hole which is connected to the actuator; a ball having a flow path through which the refrigerant flows in connection with the inlet hole and the outlet hole, and being rotated by a rotary shaft of the actuator in the interior space; a sheet having a flow hole, through which the refrigerant passes in communication with the outlet hole, and arranged to be in contact with the ball between the housing and the ball so as to support the ball; and a sealing member placed between the seat and the housing.

The invention relates to the technical field of ball valves, provides an intelligent sensing modular ball valve and a control method, and designs a valve body module and a control module. The valve body module is integrated with a multi-mode sensor, comprises a spirally-distributed acoustic sensor array, a physical quantity sensor group and a valve element state detection sensor, and monitors fluid acoustic characteristics, pressure, temperature, flow, liquid level and valve element displacement and torque in real time. The control module analyzes sensor data through a data fusion algorithm, and early identification of cavitation faults and detection of micro-crack faults are achieved. The system adopts an 8-bit dynamic coding mechanism to accurately position the fault type, and adjusts the opening or torque of the actuator in a linkage manner. The method has multi-parameter cooperative sensing, early fault early warning and self-adaptive control capabilities, and the reliability and safety of the ball valve under complex working conditions are remarkably improved.

The invention particularly relates to a double-sealing special-shaped ball valve which comprises a valve body, a valve rod rotating and lifting operation mechanism movably installed at the top of the valve body and a connector arranged at the bottom end of the valve rod rotating and lifting operation mechanism. A notch is formed in the top of the special-shaped ball valve clack movably installed in the valve body and can be tensioned, a thin-layer slotting plate part is arranged at the bottom of the special-shaped ball valve clack, deformation is easier, a side through opening is formed in the middle of the special-shaped ball valve clack and used for switching rapid water passing, and therefore the whole structure is an inverted-C-shaped special-shaped ball, and the special-shaped ball valve has the high opening and contracting functions. The left side and the right side of the special-shaped ball valve clack shrink and deform towards the middle portion, the two inclined holes close the notch in the top of the special-shaped ball valve clack, so that the second sealing gasket is separated from the first sealing gasket, and at the moment, in the whole rotating opening and closing process of the valve, the second sealing gasket of the special-shaped ball valve clack and the first sealing gasket of the connecting pipe do not rub; the service life is long.

The invention relates to the technical field of industrial automation and control, and discloses a top-mounted high-temperature-resistant hard sealing ball valve and a self-adaptive dynamic control system of the top-mounted high-temperature-resistant hard sealing ball valve. The system aims at solving the technical problem that due to the fact that fixed driving torque is adopted, the sealing face of the valve is excessively abraded or the risk of heat jamming exists. The system is characterized by comprising a multi-point distributed sensing subsystem, a valve dynamic control unit and an intelligent electric actuating mechanism. A hybrid torque prediction model based on physical information and data driving is arranged in the valve dynamic control unit, the optimal torque is predicted in real time through sensing data, an executing mechanism is driven to respond dynamically, and the valve dynamic control unit has the online self-learning capacity. Accurate prediction and dynamic adjustment of the valve operation torque can be achieved, overstress damage is effectively avoided, the self-adaptability and generalization ability of the system are improved, and the service life of the valve is prolonged.

The invention discloses grinding and polishing equipment for a ball valve element and a machining method of the grinding and polishing equipment, and belongs to the technical field of ball valve element machining. According to the technical scheme, the grinding and polishing equipment is characterized by comprising a supporting frame and further comprising a placement assembly, and the placement assembly comprises a lifting frame, a lifting device, a placement disc, a supporting shaft and rolling wheels; the grinding device comprises a first rotating shaft, a rotating frame, a universal shaft, a grinding disc, a grinding frame, a first electric telescopic rod and a second grinding piece, the universal shaft is installed on the rotating frame, the grinding disc is installed on the rotating shaft, the grinding frame is installed on the supporting frame, the first electric telescopic rod is installed on the grinding frame, and the second grinding piece is installed on the first electric telescopic rod. According to the grinding device, the outer surface of the valve element of the ball valve and the inner wall of the middle round hole can be ground at the same time, the grinding disc in the grinding device can grind the outer surface of the valve element, the second grinding piece can go deep into the round hole to conduct synchronous treatment on the inner wall, the grinding time is greatly shortened, and the working efficiency is remarkably improved.

The utility model relates to a supercritical unit drain ball valve structure which comprises a valve body, a valve rod and a valve ball, the valve body is integrally manufactured, a valve cavity is formed in the middle of the valve body, and flange holes are formed in the two ends of the valve body respectively. One side of the valve cavity is communicated with one flange hole, and the other side of the valve cavity is communicated with the other flange hole through a water through hole; a valve rod hole is formed in the middle of the upper end of the valve body, and fixing supports are arranged on the two sides of the upper end of the valve body respectively. The valve body is of an integrated die forging structure, the situation that a split valve is prone to leakage is avoided, the valve body is of a floating ball structure, and the ball body is easier to seal under high pressure; medium chromium carbide is sprayed on the ball body and the valve seat, so that the spraying hardness, the binding rate and the porosity are guaranteed, and the sealing reliability is guaranteed; a compensation disc spring is arranged between the valve seat and the positioning pressing ring, so that the valve seat ensures the mounting reliability and the sealing reliability; the thrust ring is arranged on the valve rod to limit the displacement of the valve rod and prevent the valve rod from being separated from the ball body, and safety and reliability are achieved.

The invention discloses an anti-explosion pressure relief ball valve which comprises a pressure monitoring system and a control execution system. The pressure monitoring system is used for forming a pressure distribution model; the control execution system comprises a signal processing module used for calculating the pressure change rate; the abnormal pressure identification module is used for judging whether an abnormal pressure event exists or not according to the judgment condition; the multi-stage pressure relief control module is used for controlling the opening number of the micro-channel systems and controlling the pressure relief amount according to the relation between the current pressure and a preset threshold value; the stepped pressure relief structure comprises multiple stages of pressure relief cavities, so that the pressure relief process conforms to a pressure change formula; and the dynamic feedback control module is used for dynamically adjusting the opening amount of the micro-channel by adopting a PID control algorithm. The system has the following beneficial effects that through pressure monitoring, intelligent judgment and the multi-stage controlled pressure relief module, early recognition, accurate intervention and safe disposal of abnormal pressure events are achieved, and safety accidents such as pipeline burst and flange leakage are effectively prevented.

The invention relates to the technical field of valve pressure testing, in particular to a valve pressure testing device and a using method thereof.The valve pressure testing device comprises a detection water tank, a supporting frame is arranged on the detection water tank, a rotating support structure is rotationally arranged on the supporting frame, and an intermittent driving mechanism capable of driving the rotating support structure to intermittently rotate at all stations is arranged on the supporting frame; a plurality of clamping structures used for positioning and clamping the ball valve main body are arranged on the rotating support structure in the circumferential direction of the rotating support structure, and inflation and deflation pipeline structures used for inflating and deflating the ball valve main body are arranged between the clamping structures; the detection water tank, the rotary support structure, the intermittent driving mechanism, the clamping structure, the inflation and deflation pipeline structure, the feeding slide way structure, the discharging slide way structure and the like cooperate and cooperate with one another to complete exhaust and inflation at the same time, gas recycling can be achieved, exhaust operation and time are saved, and full-process automatic testing can be achieved.

The utility model provides a quick-connection ball valve which comprises two ball valves, the two ball valves are in linear clamping connection, each ball valve is provided with a through hole for fluid to pass through, each ball valve comprises a valve body, a valve element is arranged in each valve body, each valve element is connected with a valve rod, the end, away from the corresponding valve element, of each valve rod extends out of the corresponding valve body, and the end, extending out of the corresponding valve body, of each valve rod is connected with a handle. The handle drives the valve element to rotate through the valve rod. And the valve body is provided with a locking device. The locking device comprises a locking groove and a locking column; the handle is in driving connection with the locking column. When the handle is closed, the locking column is arranged in the valve body; when the two ball valves are in butt joint and the handle is opened, the handle drives the locking column to stretch into the locking groove of the other ball valve, the locking device locks the two ball valves, the two ball valves are prevented from rotating and disengaging, fluid leakage caused by looseness is avoided, and the safety of valve body connection is improved.

A fluid connector includes a shell having a fluid channel, a ball valve accommodated in the shell and having a through hole, a control element arranged outside the shell for controlling the ball valve to rotate, and a pin member. A front end of the shell for engaging a matching connector has an engagement hole. The control element controls the ball valve between a closed position and an open position. The through hole is in fluid communication with the fluid channel when the ball valve is at the open position. A front face of the shell has an accommodating hole for accommodating the pin member. A resilient member is arranged in the accommodating hole for supporting the pin member. The pin member is adapted to be guided by a guide structure and compress the resilient member to separate from the engagement hole of the matching connector.

The invention relates to the technical field of ball valves, and discloses a ball valve butt joint structure which comprises two ball valve assemblies in coaxial butt joint, each ball valve assembly comprises a valve body, a valve element and a valve rod, each valve element is movably arranged in the corresponding valve body, one end of each valve rod penetrates through the corresponding valve body and is fixedly connected with the corresponding valve element, and the other end of each valve rod extends out of the corresponding valve body and is sleeved with a gear. The butt joint end face of each valve body is provided with a rack extending in the circumferential direction, and the rack of one ball valve assembly can be meshed with the gear of the other ball valve assembly. A limiting pin is elastically connected into at least one valve body, a limiting hole matched with the limiting pin is formed in the butt joint face of at least another valve body, the limiting pin can move between a locking position and an unlocking position in the axial direction relative to the valve bodies, the limiting pin is inserted into the limiting hole in the locking position, and the limiting pin is disengaged from the limiting hole in the unlocking position. According to the ball valve butt joint structure, locking and opening of the two ball valve assemblies can be completed only through two actions, and operation is rapid and convenient.

The invention relates to the technical field of sampling devices, in particular to a quantitative sampling valve of a liquid circulation pipeline, which comprises a ball valve, a sampling barrel and a sampling assembly. The sampling barrel is connected with a pipeline through a ball valve. When the ball valve is opened, a sampling channel is formed between the ball valve and the sampling barrel. The sampling assembly and the sampling channel are slidably sealed. The sampling assembly divides the sampling channel into an upper channel and a lower channel. According to the quantitative sampling valve of the liquid circulation pipeline, the ball valve, the sampling barrel and the sampling assembly are arranged to be matched, gas and residual liquid in the upper channel can be discharged back to the pipeline, the situation that a new liquid sample is polluted by previous liquid sample residues is avoided, and the sampling accuracy and representativeness are improved. And after the sampling is completed, the liquid sample is temporarily sealed in the sampling barrel by utilizing the sealing between the sampling assembly and the sampling barrel, so that the liquid sample is prevented from being polluted due to contact with the outside, and the liquid sample is convenient to transfer and store.

The present invention relates to the technical field of ball valves, and discloses a multi-stage sealed hydrogen ball valve, which includes a valve seat, a valve core and a valve stem. The valve core is arranged inside the valve seat. Among them, a first support is fixed on the valve seat, a second support is arranged above the first support, and the first support and the second support are connected by a plurality of first connecting rods. A third support is arranged above the second support, and the second support and the third support are connected by a plurality of second connecting rods. Through the cable, the sliding plug and the annular bladder linkage mechanism, the present invention actively controls the separation of the sealing seat and the valve core before the valve core rotates, eliminates the frictional loss generated by direct contact during the opening and closing process of the traditional hard sealing structure. The sealing seat only contacts when the valve is closed, and there is no relative movement during the daily adjustment process, significantly prolonging the service life of the sealing component.

The disclosure relates to a segmented ball valve for low noise and anti-cavitation applications, wherein a replaceable cartridge may be fixed inside and retained by stem and end post. The cartridge may incorporate irregular or regular polygonal-shaped plates or a combination of polygonal shaped plates and round bars facilitating staged pressure reduction and effectively mitigating or eliminating the occurrence of high-intensity cavitation and noise. The segment may have a precisely machined cylindrical bore designed to accommodate a slide-fit anti-cavitation and noise reduction cartridge; this allows for convenient field replaceability of the cartridge with minimal effort, eliminating the need for welding or fasteners to affix it to the segment. This cartridge may also facilitate the utilization of this fully cylindrical bore inside the segment for incorporating a greater number of pressure reduction stages compared to the currently available designs.

The invention relates to the technical field of valves, in particular to a metal hard sealing ball valve which comprises a main valve body structure and a sealing adjusting structure. The main valve body structure comprises a valve shell, a ball assembly and a valve seat assembly, and the sealing adjusting structure comprises an elastic compensation unit and a guide supporting unit. A hardening treatment layer and a micro-convex texture structure are arranged on the outer surface of the ball assembly, and a flexible filling material is embedded in a sealing ring on the inner side of the valve seat assembly. The elastic compensation unit dynamically adjusts the position of a valve seat through a spring assembly, and the guide supporting unit ensures movement stability. The inner wall of the valve shell is provided with a diversion trench to optimize a fluid path, and the outer wall of the annular valve seat is provided with radiating fins to improve high-temperature resistance. The sealing performance can be remarkably improved, friction and abrasion are reduced, the fluid scouring influence is reduced, the leakage problem under the high-pressure or high-temperature or high-abrasion working condition is solved, and the service life is prolonged.

The present invention discloses a sealing detection device and a detection method for a jet component of a dual-fuel engine. The device includes an upper sealing cover plate, a side test cover plate, and a lower sealing cover plate. The upper sealing cover plate includes an upper cover plate, a connecting pipe, and a ball valve. The rabbet of the upper cover plate is embedded between the inner sleeve and the outer pipe in the upper interface of the double-wall connecting pipe. O-ring seals are respectively arranged on the inner sleeve and the outer pipe, and the upper cover plate is fixed on the upper interface of the double-wall connecting pipe. The side test cover plate is fixed on the side interface of the double-wall connecting pipe. The double-wall connecting pipe and the pipe seat are fixedly connected into one body, and the lower sealing cover plate is hermetically fixed on the lower interface of the pipe seat. The method includes: 1) completing the installation of the sealing detection device; 2) hoisting the jet component into water to detect whether there is leakage. The present invention can accurately detect whether the jet component leaks with only one pressurization test on the jet component. It is fast, efficient, and the detection result is reliable, significantly shortening the detection time, reducing the detection cost, and remarkably improving the detection efficiency and detection quality.

The invention discloses equipment and technology for plasma spray welding of a metal coating on the surface of a ball valve, and relates to the technical field of ball valve machining, the equipment comprises a base, two sliding tables, a lifting table, a clamping assembly, a guide rail mechanism, a sliding seat, a first telescopic support, a second telescopic support and a spray gun rod, the two sliding tables are symmetrically arranged on the base in a sliding mode, and the lifting table is arranged on the sliding tables; a clamping assembly is arranged on the lifting table, the guide rail mechanism is fixedly arranged at the center of the base, the sliding base is arranged above the guide rail mechanism in a sliding mode, a first telescopic support is fixedly arranged on the sliding base, a second telescopic support is vertically and fixedly arranged at the output end of the first telescopic support, and the spray gun rod is fixedly installed on the second telescopic support. The guide rail mechanism comprises a fixed table, a sliding block, a hydraulic telescopic rod, a guide block, a sleeve gasket and a connecting block. According to the method, the remodeling time and cost can be greatly reduced, the application range is effectively expanded, and the spray welding efficiency of the ball valve is further improved.

The utility model discloses a turbo expander test bed suitable for a normal temperature environment. Comprising a profile rack, an electric proportional valve I, an electric proportional valve II, a flow meter I, a large-flow turbine inlet pipeline, a small-flow turbine inlet pipeline, a hydrostatic bearing air supply pipeline, a turbine air inlet main pipeline, a brake fan air inlet pipeline, a brake fan exhaust pipeline, a manual ball valve, a flow meter II, a flow meter III, an electric proportional valve III and an electric proportional valve IV. An electric ball valve I, an electric ball valve II, an electric ball valve III, an electric ball valve IV, a turbine mounting plate and a hydrostatic bearing gas supply tee joint can adapt to normal temperature tests of turbo expanders of different specifications and provide bearing gas pressure needed by a hydrostatic bearing, and real-time monitoring of pipeline flow is achieved through a flowmeter. Precise adjustment of the pipeline pressure is achieved through the electric proportional valve, the test bed effectively solves the problem that related parts need to be replaced repeatedly when turbo expanders of different specifications are tested through a traditional test bed, test convenience is improved, and labor intensity and cost are reduced.

The utility model discloses a multi-cone separation pre-filter which comprises a filter bottle, the upper end of the filter bottle is connected with a valve head, one side of the valve head is provided with a water inlet, the other side of the valve head is provided with a water outlet, the lower end of the filter bottle is provided with a drain outlet, a ball valve is installed in the drain outlet, and a water segregator, a framework, a filter screen and a separation mechanism are installed in the filter bottle. The separation mechanism comprises an inner pipe part and an outer pipe part, an inner water cavity is formed between the inner pipe part and the outer pipe part, a plurality of conical funnels are arranged between the inner pipe part and the outer pipe part, and conical separation cavities are formed in the conical funnels. According to the multi-cone separation pre-filter disclosed by the utility model, the filter screen is combined with the multi-cone separator, double filter systems are perfectly fused, the filter effect is good, the flux is increased, the pollution discharge is clean and thorough, and the multi-cone separation pre-filter can adapt to different environmental water qualities.

The invention belongs to the technical field of ball valves, and provides sampling equipment which comprises a liquid outlet device and a sampling device, the sampling device is located below the liquid outlet device, the liquid outlet device comprises a sampling pipe, a ball valve body, a liquid outlet pipe and a moving mechanism, the ball valve body is connected to the bottom of the sampling pipe, and the liquid outlet pipe is connected to the bottom of the ball valve body. The moving mechanism is used for driving the liquid outlet pipe to move back and forth in the direction close to or away from the sampling device; the sampling device comprises a mounting plate, a rotating mechanism and a plurality of fixing mechanisms, the fixing mechanisms are uniformly distributed at the top of the mounting plate at intervals in the circumferential direction and are used for placing and fixing sampling bottles, and the rotating mechanism is connected to a bottom plate of the mounting plate and is used for driving the mounting plate to rotate; therefore, the sampling bottle in any fixing mechanism of the mounting plate is positioned below the liquid outlet pipe. The sampling device has the advantages that through cooperation of the moving mechanism and the rotating mechanism, automatic butt joint between the liquid outlet pipe and the multiple sampling bottles is achieved, and the sampling efficiency is improved.

The invention belongs to the technical field of valves, and particularly discloses a self-pressure-control cut-off ball valve which comprises a valve shell, a sealing cavity is formed in the middle of the interior of the valve shell, a spherical valve element is rotationally arranged in the middle of the inner wall of the sealing cavity in a sealed mode, the middle of the spherical valve element is in a through opening shape, and an indicating groove is formed in the bottom of the valve shell. When pressure in a pipeline rises, the transmission assembly can be triggered in the valve shell to work so that the spherical valve element can rotate, then the valve shell is opened and conducted, the transmission assembly can be further driven to work along with pressure rising, and when the maximum pressure value of the valve is reached, the transmission assembly can be driven to rotate, so that the transmission assembly can be driven to rotate. At the moment, the opening degree of the spherical valve element in the valve shell is in the maximum state, the limiting assembly is triggered to limit the transmission assembly at the moment, the situation that the spherical valve element continues to rotate, and consequently the opening degree is decreased is prevented, and opening and closing of the valve can be automatically adjusted according to changes of the pressure in the pipeline.