1025results about "Preventing unauthorised/accidental actuation" patented technology

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 obstructs the rotation of the control element unless it is in a set position.

The invention discloses a quick-change type ball valve with double mechanical interlocking assemblies, and particularly relates to the technical field of fluid control equipment, the quick-change type ball valve comprises a first ball valve and a second ball valve, and the second ball valve is installed on the side face of the first ball valve through a buckle; the first ball valve comprises a first valve element, a first valve seat, a first ball valve handle, a marble, a first pin and a first connecting buckle, a circular hole is formed in the upper wall of the first valve seat, a horizontally-placed first rectangular fillet long plate is arranged above the first ball valve handle, and a second arc-shaped groove is formed in the fillet position; a vertically-placed first threaded long rod structure is installed below the first rectangular fillet long plate, the first threaded long rod structure of the first ball valve handle vertically penetrates through a first circular hole of the first valve seat, and the first threaded long rod structure is rotationally connected with the first circular hole of the first valve seat.

A lockout device can be used to secure a valve, a valve stem, or other control. The lockout device includes a cover having an internal cavity and an opening about the internal cavity, a cable that is flexible, a cable attachment point attached to the cover to which the cable is attached at its securable end, and a cable lockout module attached to the cover. The cable lockout module includes a cable engagement element having a cable-receiving pathway extending therethrough for reception of a free end of the cable and selective securement thereof to create a cable loop. The cable lockout module further has a door. When the door is in a closed position, the cable engagement element is securely covered by the door and the door is lockable relative to a remainder of the cable lockout module to prevent the door from being opened.

The utility model relates to the technical field of flow valves, in particular to a three-way switch valve with a locking function, which comprises a three-way valve assembly, the three-way valve assembly comprises a valve core, the valve core is arranged in the three-way valve assembly, and the valve core is rotatably arranged; the three fluid valve ports are formed in the three-way valve assembly respectively, and circulation of the fluid valve ports is switched through rotation of the valve element; the rotating handle is fixedly connected with the valve element and used for driving the valve element to rotate; the locking mechanism is arranged on the rotating handle, a locking pin is arranged on the locking mechanism, a locking hole is formed in the position, corresponding to the locking pin, of the three-way valve assembly, and when the locking pin is inserted into the locking hole, rotation of the rotating handle is limited. According to the utility model, the valve can be ensured not to change accidentally at a specific position. The problem that a valve element of a traditional three-way ball valve shifts due to external factors is solved, and meanwhile the requirements for rapid emptying and fluid switching in air source treatment can be met.

The invention provides an anti-corrosion butterfly valve of a self-repairing sealing structure, and relates to the technical field of butterfly valves, the anti-corrosion butterfly valve comprises two mounting flanges, and the two mounting flanges are both fixedly connected to the outer side of a butterfly valve body; the two groups of mounting bolt holes are respectively formed in the inner sides of the two mounting flanges; the mounting support is fixedly mounted on the upper end face of the butterfly valve body through bolts. The transmission box is fixedly mounted on the upper end face of the mounting support through bolts. The transmission connection cylinder is fixedly connected to the outer side of the transmission box; the valve rod transmission shaft center is rotationally connected to the inner side of the butterfly valve body, and the problems that in the using process of an existing anti-corrosion butterfly valve, if cracks are generated due to abrasion or scratching of a sealing ring, a gap is easily formed between a disc type valve clack of the butterfly valve and the sealing ring, normal work of the valve is affected, and the service life of the valve is shortened are solved. The sealing performance of the butterfly valve is guaranteed, and the service life is prolonged.

The interlocking ball valve comprises a valve body, a ball body used for opening and closing the valve is arranged in the valve body, a handle corresponding to the ball body is arranged on the valve body, the handle is used for driving the ball body to rotate to open and close the valve body, a buckle is arranged on the valve body, a clamping groove corresponding to the buckle in shape is further formed in the valve body, and the clamping groove is used for clamping the valve body. The valve body is provided with a buckle, the buckle can stretch into a buckle of another valve body to conduct rotary clamping, the valve body is further provided with a positioning column, the valve body is provided with a positioning groove corresponding to the positioning column, a positioning spring is arranged between the positioning column and the valve body, and the positioning spring pulls the positioning column to move towards the interior of the valve body. And the positioning column can be embedded into the positioning groove of another valve body. According to the interlocking ball valve, two interlocking ball valves can be connected for use, the ball valves can be quickly disassembled and assembled during use, the working condition that the ball valves need to be disassembled is adapted, and clamping connection between the valve bodies is ensured through cooperation of the buckles and the clamping connection grooves.

The utility model provides a manual valve capable of preventing misoperation, which comprises a valve body, a valve core is arranged in the valve body, the top of the valve core is connected with a valve rod which is in sealing running fit with the valve body, the top end of the valve rod penetrates out of the valve body, and the top end of the valve rod is provided with a valve handle which is used for driving the valve rod to rotate so as to realize opening and closing of the manual valve, a self-locking mechanism which is matched with the valve rod to enable the valve rod to rotate within the range of 90 degrees so as to control opening and closing of the valve is arranged in the valve body; a character opening signboard and a character closing signboard are arranged on the outer surface of the top of the valve body, and the character opening signboard and the character closing signboard are arranged at an included angle of 90 degrees by taking the axis of the valve rod as an angular point; the valve handle is provided with an arrow board which rotates along with the valve handle and is used for pointing to the character opening signboard when the manual valve is fully opened and pointing to the character closing signboard when the manual valve is fully closed. By means of the self-locking mechanism, the character opening signboard, the character closing signboard and the arrow board, misoperation of the manual valve can be effectively prevented.

The invention belongs to the technical field of pipeline valves, and particularly relates to a resistance-free prevention valve. Comprising a discharge valve, a main valve and two check valves, and the two check valves are fixedly installed in an inner cavity of the main valve and divide the inner cavity of the main valve into an inlet cavity, a middle cavity and an outlet cavity. When the pressure difference between the inlet cavity and the middle cavity is larger than a set value, the discharge valve is closed, and when the pressure difference between the inlet cavity and the middle cavity is continuously smaller than the set value, the pressure difference discharge valve is opened, discharge and pressure reduction are conducted through the discharge channel, and the discharge valve is closed until the pressure difference between the inlet cavity and the middle cavity recovers to the set value; the anti-misoperation device is arranged in the discharge valve, so that misoperation discharge of the discharge valve caused by water pressure fluctuation in a pipeline can be effectively prevented, and water pressure loss is avoided; valve membrane abrasion is reduced, and the service life of the discharge valve is prolonged; and the pressure difference during drainage can be adjusted according to working conditions and requirements.

The utility model discloses a hydrogenation ball valve with a self-locking function, which belongs to the technical field of valves, and comprises a valve body, a valve core, a valve cover, a filling pressure detection self-locking mechanism, a valve rod and a valve cover positioning mechanism, the upper end of the valve element is connected with a valve rod used for enabling the valve element to rotate to open and close the ball valve. The valve body is provided with a filling pressure detection self-locking mechanism used for locking the ball valve when the hydrogen pressure of the hydrogen inlet end is larger than the safety range. And a valve cover positioning mechanism for positioning and locking the valve cover is mounted on the outer side wall of the valve body. By means of the mode, when the hydrogen pressure on the hydrogen inlet side is too large and a hydrogen pipe on the hydrogen outlet side is damaged, the valve element can be locked, and the ball valve cannot be communicated; and when the valve cover is mounted, bolts of the flange on the valve cover do not need to be symmetrically screwed one by one through the valve cover positioning mechanism and are screwed in sequence, so that the time of an operator is saved.

The present technology relates to an automatically locking, releasable, safety knob assembly for a stove. The assembly includes a base with a locking notch. An adapter mates with the stove's valve stem and has a head, a tubular middle section, and an adapter base with a central aperture for receiving the valve stem. The knob includes a housing with a housing disk covering the base, an arm movement channel aligned with the locking notch in the locked configuration, and a central aperture for receiving the adapter head. The assembly further includes a sub-assembly with a slidable button allowing free rotation of the knob in the unlocked configuration, an automatic locking arm biased with the slidable button, and engagement with the button causing the arm to disengage from the locking notch and move in the arm movement channel, enabling the knob to freely rotate and rotate the valve stem.

The invention provides a method for regulating and controlling a hydrodynamic balance valve with a real-time load feedback function, and the method comprises the steps: collecting the strain, water level, gas, vibration and motor current data of the balance valve in real time, constructing and utilizing a comprehensive load balance model, and calculating the effective safety torque of the balance valve in real time at an edge calculation layer; a mechanical wear degradation factor is calculated based on the action history and the current variance of the locking mechanism, and the instantaneous instability risk probability is calculated in combination with the effective safety torque and the current locking torque; according to the instantaneous instability risk probability, an output mode of a locking mechanism is dynamically adjusted to execute a graded locking action; and periodically calculating a full-life-cycle health degree index, and automatically generating a maintenance or replacement work order when the full-life-cycle health degree index is lower than a preset threshold value. According to the invention, the conversion from passive alarm to active defense is realized, and the safety and operation and maintenance efficiency of the urban balance valve in rainstorm, heavy load and corrosion environments are obviously improved.

The present invention provides a pneumatic valve system for easily attaching and sealing a valve coupler to a valve stem for filling an inflatable vessel such as a tire, tube, mattress, etc. The valve system may comprise the following major components: a valve stem, a valve cap with a pin passage and attachment structure for attaching to a valve coupler, a sealing member, a biasing member, the valve coupler comprising a coupler housing, a pin seat, an inflation pin, and a collar with ball bearings complementary to the attachment structure of the valve cap, and an elastic sleeve for providing inward force against the ball bearings. The valve system may allow for easy, secure, and sealed engagement between the valve coupler and valve stem by simply pushing down on the valve coupler, and disengagement by pulling up on the valve coupler with as little as two fingers.

The utility model relates to a radiator constant temperature control valve which comprises a valve body which is in a vertical tubular shape, and a medium outlet is formed in the side wall of the lower portion of the valve body. The valve element is coaxially arranged in the valve body and is in rotary sealing fit with the valve body, a valve element cavity is formed in the bottom of the valve element, a valve element outlet used for communicating the valve element cavity with the medium outlet is formed in the cavity wall of the valve element cavity, and the vertical width of the valve element outlet gradually changes in the circumferential direction of the valve element; the flow adjusting piece is fixedly connected to the top end of the valve element and is in running fit with the inner wall of the valve body, and the top of the flow adjusting piece is located outside the valve body; the protective cap is in an inverted cup shape, and a matched detachable fixed connection structure is arranged between the inner wall of the protective cap and the outer wall of the upper part of the valve body; and a matched insertion positioning structure is arranged between the bottom of the hand wheel and the top of the flow adjusting part. The opening degree and the flow Kv value of the valve are controlled respectively, the accuracy of valve flow adjustment can be effectively improved, the opening degree of the valve can be automatically adjusted according to the environment temperature, and it is guaranteed that the environment temperature is basically constant.

The invention relates to the technical field of valve bodies, and provides an opening adjusting valve with discharge protection and emergency shut-off, which comprises a main valve body, a driving unit and a valve core assembly, the main valve body comprises a valve cavity with a water inlet end and a water outlet end, the valve core assembly is arranged in the valve cavity, the opening adjusting valve further comprises a check valve core, the valve core assembly and the check valve core are sequentially arranged in the valve cavity, and the valve core assembly and the check valve core are arranged in the valve cavity. A middle cavity is formed between the valve element assembly and the check valve element, the valve element assembly is connected with the driving unit, the driving unit controls the valve element assembly and the check valve element to be opened in one direction from the water inlet end to the water outlet end, the valve element assembly comprises a valve rod, a valve plug and a pressure lock pin unit, and the valve plug is connected with the valve rod in a lockable mode. When the valve plug and the valve rod are in an unlocked state, the valve plug and the valve rod have the freedom degree of moving in the vertical direction, and the anti-backflow reversing valve enables the valve plug and the valve rod to be locked or unlocked according to the pressure of the water inlet end and the pressure of the water outlet end. The problems that in the prior art, anti-backflow response of an opening degree adjusting valve is not timely, and reliability is difficult to maintain for a long time are solved.

The utility model discloses a corrosion-resistant high-pressure fire extinguisher valve structure which comprises a valve body, a nozzle communicated with the inside of the valve body is arranged on the side wall of the valve body, the lower end of the valve body is detachably connected with a vertical pipe seat, a handle is arranged at the upper end of the valve body, a convex ring is arranged on the outer side wall of the valve body and located between the handle and the vertical pipe seat, and the top of the convex ring is close to the handle. The bottom of the convex ring is far away from the handle, the valve body is sleeved with an O-shaped ring, the O-shaped ring is located at the bottom of the convex ring, the part, located at the bottom of the convex ring, of the valve body is wedge-shaped and sleeved with the O-shaped ring, the inner side of the convex ring is fixedly connected with the valve body, the outer side of the convex ring is provided with a plurality of L-shaped locking blocks, and the locking blocks are evenly distributed in the circumferential direction of the convex ring. One side of the locking block is in damping sliding connection with the protruding ring in the radial direction of the protruding ring, the magnetizer and the pull ring are fixed to the other side of the locking block, the magnetizer is located on one side of the locking block and forms a U-shaped structure together with the locking block, and the pull ring is located on the other corresponding side of the locking block. The utility model has the beneficial effect that the valve body is convenient to disassemble.

The utility model discloses a piston type step locking device, and particularly relates to the technical field of valves, the piston type step locking device comprises a valve body, an inlet pipe and a discharge pipe, one end of the valve body is connected with the inlet pipe, the bottom end of the valve body is provided with the discharge pipe, the valve body is connected with an opening and closing control assembly, the end portion of the valve body is provided with a sealing cover, and the top end of the valve body is provided with a fixing frame. A locking adjusting assembly is arranged on one side of the fixing frame, a locking assembly connected with the locking adjusting assembly in a sliding mode is installed on the fixing frame, a stepped through groove is formed in the valve body, and the caliber size of the inlet pipe is larger than the caliber size of the connecting position of the inlet pipe and the stepped through groove. Fluid efficiency is optimized through a step structure, double sealing is achieved in combination with an electromechanical locking mechanism, the control reliability and safety of the valve are remarkably improved, and the valve is suitable for fluid control scenes needing high sealing performance and impact resistance.

The utility model discloses a valve structure which comprises a valve body, a valve rod, a self-locking type driving assembly and an anti-disengaging limiting assembly. The self-locking driving assembly is assembled above the valve body, the self-locking driving assembly comprises a limiting lantern ring, the limiting lantern ring is fixedly assembled above the valve body, an internal thread driving ring is rotationally assembled in the limiting lantern ring, a plurality of locking air cavities are formed in the outer side of the internal thread driving ring, and locking cones are slidably assembled in the locking air cavities; the upper portion of the internal thread driving ring is in threaded connection with a compression thread sleeve. The anti-disengaging limiting assembly is arranged on the outer side of the valve rod in a sleeving mode and comprises an anti-disengaging piece. According to the valve structure, the self-locking type driving assembly is arranged, the driving state of the valve screw can be locked and positioned, the risk that the valve screw is affected by environmental factors and human factors to cause maloperation is reduced, and the reliability and the stability of adjusting and controlling the valve are improved.

The application relates to the technical field of ball valves, in particular to an eccentric half-ball valve with a buffer opening and closing mechanism convenient to adjust, which comprises a ball valve, a buffer opening and closing mechanism, a torsion mechanism and a top driving mechanism, the ball valve is fixedly connected with mounting flanges on both sides, the buffer opening and closing mechanism comprises side support rods, sliding blocks and hydraulic oil cylinders, connecting rods are hingedly arranged between the sliding blocks and the side support rods, pistons are slidably arranged in the hydraulic oil cylinders, the pistons are fixedly connected with sliding rods on the side edges, communicating side pipes are fixedly and communicatively arranged on the side walls of the hydraulic oil cylinders, adjusting cylinders are fixedly arranged on the communicating side pipes, conical heads are slidably arranged in the adjusting cylinders, the torsion mechanism is arranged on the upper side of the ball valve, and the top driving mechanism is arranged on the upper side of the torsion mechanism. The buffer opening and closing mechanism is arranged, the crank slider structure is combined with the hydraulic oil cylinder, the self-adaptive strengthening of buffer damping is realized, the rigid impact and water hammer effect during the closing of the valve disc are effectively inhibited, and the sealing surface is prevented from being abraded and deformed.

The utility model relates to the technical field of valve faucets, and discloses a valve faucet suitable for a high-temperature environment, which comprises a valve body, the upper end of the valve body is rotatably connected with a valve rod assembly in a penetrating manner, the surfaces of the valve body and the valve rod assembly are coated with ceramic coatings, the upper end of the valve rod assembly is fixedly connected with a handle, and the handle is fixedly connected with the valve body. A water filtering mechanism is arranged at the water outlet end of the valve body, a positioning ring is fixedly connected to the exterior of the upper end of the valve body, a positioning hole is formed in the left end of the interior of the positioning ring, and a positioning mechanism is arranged on the lower surface of the handle; according to the utility model, the water filtering mechanism is arranged, and the water filtering mechanism realizes real-time filtering of impurities in a medium through the modular design of the supporting sleeve and the filter cartridge; the filter cartridge can be quickly detached and cleaned, flow reduction caused by impurity blockage is avoided, the positioning mechanism automatically locks a handle in a positioning hole of a positioning ring through cooperation of a spring and a positioning rod when the valve is closed, and accidental opening of the valve caused by accidental touch, vibration or accidental collision is thoroughly eradicated.

The invention relates to the technical field of diaphragm valves, and aims to solve the problems that a traditional diaphragm valve needs to be shut down when worn parts are replaced, disassembly is tedious, and sealing performance is insufficient. The diaphragm valve comprises a valve body, a valve middle cover, a valve top cover, a connecting assembly, a valve handle, a diaphragm piece, a valve screw rod, a torsion nut, a torsion limiting buckle and a locking ring, locking clamping teeth on the outer wall of the locking ring are matched with limiting clamping teeth on the side wall of an inner cavity of the valve top cover, the position of the valve is locked, and when the valve body is in a closed state, the diaphragm piece can be separated from the valve screw rod. Replacement of the valve handle and the torsion limiting buckle is completed, and replacement of abraded parts can be completed without shutdown; the connecting assembly is composed of a connecting insertion pipe, a limiting end cap, a pressing assembly, an elastic assembly and a compression spring, rapid disassembly and assembly can be achieved without tools, and the problem that a traditional long screw is tedious in disassembly is solved.

The invention provides an opening and closing handle fixing piece for a ball valve, which can be installed on an existing ball valve through simple operation and can ensure safety. An opening / closing handle fixture according to a first embodiment is provided with: a first plate for preventing rotation of an opening / closing handle; and a second plate that is slidably attached to the first plate and maintains the positional relationship between the opening / closing handle and the first plate, the first plate being provided with a first lockhole through which a bolt of the lock passes, and a clamping part that clamps the opening / closing handle and a stopper of the valve body that restricts the rotation of the opening / closing handle, the second plate being provided with a second lockhole through which the latch of the lock passes, and the second plate being provided with a second lockhole through which the latch of the lock passes. The second plate is provided with a second lockhole through which a bolt of a lock passes, and an insertion part inserted into a gap between the opening / closing handle and the first plate, and the opening / closing handle fixing member is configured so that when the first plate prevents the opening / closing handle from rotating and the second plate slides, the insertion part is inserted into the gap. The first upper lock hole and the second upper lock hole are overlapped, and the first upper lock hole and the second upper lock hole are overlapped.

The invention relates to a valve device for installing on the outlet of a sanitary fitting, comprising a sleeve-shaped valve part (1) for securing to the outlet (13) of the sanitary fitting, said valve part comprising a blocking element (4) which is movably arranged in the interior of the valve part (1) and which can be moved from a closed position for an in-flowing liquid flow to an open position for conducting the liquid flow by means of a cam (10) that is secured to a shaft (3) of an actuation element (9), wherein the shaft (3) crosses the valve part (1) and is rotatably mounted on the valve part (1) by means of the actuation element (9). According to the invention, the valve part (1) has two diametrically opposed and axially running slots (8), and a sleeve part (2) is provided which comprises two diametrically opposed, radially protruding webs (7) that run in the axial direction of the sleeve part (1) and can be inserted into the slots (8) of the valve part (1) in a precisely fitting manner. The valve part (1) and the inserted sleeve part (2) leave open radial openings which form the rotary bearing of the shaft (3). In this manner, a mechanically simple device is facilitated for saving water.

The utility model relates to the technical field of check valves, in particular to a fire-fighting check valve structure which comprises a valve body, a baffle is mounted in the valve body, a limiting rod is fixedly connected in the center of the baffle, a spring and a locking mechanism are mounted on the outer side of the limiting rod, and the locking mechanism is fixedly connected with the baffle. A locking mechanism is installed on the outer side of the valve body and can lock the position of the limiting rod, the position of the blocking plate is fixed by locking the position of the limiting rod, a fixed space is formed by the blocking plate and an opening in the check valve, and the limiting mechanism is installed on the outer side of the valve body. The limiting mechanism can extrude the baffle plate, so that the distance between the baffle plate and the opening of the check valve is increased more conveniently, repeated opening and closing under the impact of water flow are avoided, and a circulation space is stably provided; according to the check valve, the abrasion consumption of parts in the check valve is reduced, and the service life is prolonged.

The invention discloses a high-stability self-locking type valve coupling, which relates to the field of valve couplings, and comprises two valve bodies which have the same structure and are assembled in a matching way, a ball valve which is rotatably arranged in the valve bodies, and a handle assembly which is used for screwing the ball valve, a first locking assembly is elastically assembled at one end of the locking surface; the handle assembly comprises a special-shaped seat connected to the top of the ball valve and a handle, a second locking assembly is arranged between the handle and the special-shaped seat, and a third locking assembly is elastically assembled at the other end of the locking face. The three locking assemblies are arranged on the two valve bodies correspondingly for connection and assembly, the situation that fluid leaks due to the fact that the ball valve is opened by misoperation when the two valve bodies are not in butt joint is effectively prevented, meanwhile, the situation that the two valve bodies rotate and are separated due to misoperation or vibration of a pipe body when the valve bodies are in the use state is prevented, and the service life of the valve bodies is prolonged. And the stability of the valve body in a use state is ensured.

To provide a device which can lock a position of a valve, and can make a grip non-removable from the valve at the locked position.SOLUTION: A device for locking a turning grip of a valve, preferably, a rotary valve, more suitably, in particular, a ball valve or a butterfly valve comprises: the grip for operating a block mechanism of the valve; a lock ring which can be arranged at a valve housing support body for an operation device so as to be relatively non-turnable; and an adapter which can be arranged positionally fixably and separatably at a drive pin of the block mechanism. The adapter and the grip are re-separably connected to each other, the grip is arranged with a non-turnable slide ring which is movable in an axial line direction, the slide ring is movable to a locked position or an open position in the axial line direction, a turning motion of the grip is locked at the locked position of the slide ring, and the grip become non-removable from the valve depending on a position of the slide ring at the locked position.SELECTED DRAWING: Figure 3

The utility model discloses a butterfly valve limiting and locking device which comprises a valve body assembly, a rotating assembly fixed to the top of the valve body assembly, an angle assembly fixed to the top of the rotating assembly, a stopping assembly rotationally connected to the interior of the angle assembly and comprises a rotating shaft, the rotating shaft is fixed to the interior of the angle assembly, and a fixing strip is rotationally connected to one side of the rotating shaft. A friction plate is fixed to one side of the fixing strip, a bayonet lock is slidably connected into the fixing strip, a pull handle is fixed to the end of the bayonet lock, a top plate is fixed to one side of the bayonet lock, a spring is sleeved with one side of the bayonet lock, the valve body assembly comprises a valve body, a flange is fixed to the end of the valve body, a valve seat is sleeved with the valve body, and a supporting frame is fixed to one side of the valve body. The friction plate is in contact with the friction disc through rotation of the fixing strip, so that rotation of the friction disc can be limited, the valve shaft cannot rotate, the opening and closing angle of the valve clack is fixed, and the opening and closing angle of the valve clack can be confirmed through matching of the pointer and the scales.

The invention belongs to the technical field of gas cut-off valves, and discloses a gas cut-off valve cut-off trigger device which comprises a valve body, a valve cover is installed on the surface of the valve body in a hinged mode, a control wheel disc is arranged at the top end of the valve body, a sealing plug is arranged in an inner cavity of the valve body, and a cut-off mechanism is arranged in the inner cavity of the valve body. The cut-off mechanism comprises a positioning assembly and an adjusting assembly, a protection mechanism is arranged on the surface of the valve body and comprises a stop lever, a storage assembly and a control assembly, and the positioning assembly and the adjusting assembly are arranged to be matched with each other, so that the relative position of a sealing plug and an air guide hole can be conveniently adjusted; therefore, the opening and closing state of the inner cavity of the valve body can be adjusted, and the stability of the sealing plug during use is effectively improved. And through mutual cooperation of the storage assembly and the control assembly, the position of the control wheel disc can be limited, the situation that the position of the sealing plug deviates due to free rotation of the control wheel disc is effectively avoided, and the stability of the sealing plug is effectively improved.

The invention relates to an interlocking mistaken-breaking-preventing ball valve type fluid connector. The interlocking mistaken-breaking-preventing ball valve type fluid connector comprises a shell and a valve element assembly rotationally arranged in a shell flow channel. The periphery of the shell is provided with a switch structure used for driving the valve element assembly to be switched between the runner closing state and the runner opening state. A first mounting cavity is formed in the front end face of the shell, an unlocking guide rod and a second elastic piece are arranged in the first mounting cavity, and a through hole enabling the periphery of the front end of the switch structure to enter the first mounting cavity is formed in one side of the first mounting cavity; when the runner is closed, the avoiding part of the switch structure is matched with the locking section of the unlocking guide rod to stop rotation; when the unlocking guide rod is pressed, the annular avoiding groove is matched with the periphery of the switch structure, and rotary locking of the switch structure is relieved; the front end face of the shell is provided with a second installation cavity provided with a locking guide rod, when the flow channel is closed, the front end of the locking guide rod can retract into the second installation cavity, and when the flow channel is opened, the switch structure enables the front end of the locking guide rod to be kept in the state that the front end stretches out of the second installation cavity. The connector can prevent the flow channel from being separated and disconnected when the flow channel is not closed.

The utility model belongs to the technical field of valve spare parts, and discloses a convenient multifunctional valve spare part which comprises a valve rod, the valve rod is divided into an upper structure and a lower structure, one end of the upper structure is connected with the rotatable lower structure, a key is inserted in the upper structure and the lower structure, and the key is connected with the valve rod. The lower structure comprises a threaded section, a structural ring, a connecting column and a rotating male ring, the upper structure comprises a valve rod section and a valve rod head, an inserting hole corresponding to the connecting column is formed in the valve rod section, a female groove corresponding to the rotating male ring is formed in the bottom end of the inserting hole, and the rotating male ring is clamped in the female groove in a sliding mode. The upper structure and the lower structure are provided with locking holes, the key is inserted into the upper structure and the lower structure and penetrates through the locking holes to enable the upper structure and the lower structure to rotate coaxially, the key is compact and reasonable in structural design, vertical connection can be controlled through the key, stealing opening / closing can be prevented, the key is provided with a convenient groove, the key can be conveniently taken out of the hole, and the key is convenient to use. The use is convenient and the safety is high.

The present invention relates to a knob assembly (100) and a cooking appliance including same. The knob assembly (100) of the present invention may be provided with a locking device (150) that moves along a locking direction different from the axial direction and has a pressing portion (157) exposed to the outside of a knob body (NB). The locking device (150) may have: a locking position in which the axial movement is restricted due to interference with a base unit (110); and an unlocking position in which the axial movement is allowed by moving from the locking position in the locking direction. An operation button (140) may move in the operation direction to move the locking device (150) from the locking position to the unlocking position. Therefore, a user first must first presses the operation button (140) to release the locking device (150), thereby allowing the knob body (NB) to be axially pressed to operate the cooking appliance. Thus, the unintended operation or malfunction of the knob assembly (100) can be prevented through the operation button (140).