Multifunctional constant-temperature balance valve with sterilization function

Abstract

The invention discloses a multifunctional constant-temperature balance valve with a sterilization function, and relates to the technical field of balance valves, the balance valve comprises a valve body mechanism, a temperature control mechanism, a water hammer prevention mechanism, a cavitation corrosion prevention mechanism and an anti-blocking mechanism, the temperature control mechanism is fixedly connected with the valve body mechanism, the water hammer prevention mechanism is fixedly connected with the valve body mechanism, and the cavitation corrosion prevention mechanism is fixedly connected with the anti-blocking mechanism. The anti-cavitation mechanism is in fastening connection with the valve body mechanism, the anti-blocking mechanism is in fastening connection with the valve body mechanism, the waterproof hammer mechanism is located at the end, away from the temperature control mechanism, of the valve body mechanism, the anti-blocking mechanism is located between the anti-cavitation mechanism and the waterproof hammer mechanism, and the temperature control mechanism is used for constant-temperature adjustment and thermal sterilization control; the water hammer preventing mechanism is used for buffering and absorbing sudden water flow impact; the anti-cavitation mechanism is used for graded throttling to reduce the instantaneous pressure difference and weaken the cavitation effect; and the anti-blocking mechanism can be used for preliminarily intercepting particles and actively discharging impurities, so that the effects of reducing water hammer impact, avoiding cavitation damage, improving effluent cleanliness and controlling temperature are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of balance valve, and particularly relates to a multifunctional thermostatic balance valve with sterilization function. BACKGROUND

[0002] With the wide application of cold and hot water mixing systems, hot water terminal safety control systems and intelligent bathroom systems, balance valves play an increasingly important role in thermostatic water outlet, safety protection, anti-interference regulation and other fields.

[0003] At present, the common balance valve is mostly structured to adjust the pipeline by setting a one-way passage composed of a piston and a spring.

[0004] However, in the prior art, first, the water hammer response structure is single and lacks a linkage adjustment mechanism, cannot effectively adapt to the difference in transient impact strength, lacks a structural locking design, and thus has poor fatigue resistance in long-time operation; second, lacks a multi-stage slow-release cavitation protection structure, and is prone to form local cavitation erosion in high-pressure difference flow state, affecting the service life of the valve body; third, lacks a filter device, leading to blockage, low manual cleaning efficiency and poor system operation stability; and fourth, lacks a regular thermal sterilization system, leading to bacterial growth. SUMMARY

[0005] The present application aims to provide a multifunctional thermostatic balance valve with sterilization function to solve the problems in the prior art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme.

[0007] The balance valve comprises a valve body mechanism, a temperature control mechanism, a water hammer prevention mechanism, a cavitation prevention mechanism and a blockage prevention mechanism, the temperature control mechanism and the valve body mechanism are tightly connected, the water hammer prevention mechanism and the valve body mechanism are tightly connected, the cavitation prevention mechanism and the valve body mechanism are tightly connected, the blockage prevention mechanism and the valve body mechanism are tightly connected, the water hammer prevention mechanism is located at one end of the valve body mechanism away from the temperature control mechanism, and the blockage prevention mechanism is located between the cavitation prevention mechanism and the water hammer prevention mechanism.

[0008] By adopting the technical scheme, the valve body mechanism is a core shell component, bears all internal components and realizes water inlet and water outlet functions; the temperature control mechanism is fastened to the valve body mechanism to realize constant temperature adjustment and thermal sterilization control; the water hammer prevention mechanism is arranged at one end of the valve body mechanism away from the temperature control mechanism, and realizes buffer absorption of sudden water flow impact through structural isolation; the anti-cavitation mechanism is fastened to the valve body mechanism and is located on one side of the anti-blocking mechanism, and reduces the instantaneous pressure difference through a staged throttling structure to weaken the cavitation effect; the anti-blocking mechanism is located between the anti-cavitation mechanism and the water hammer prevention mechanism, and is provided with a filtering and cleaning assembly on the structure, which can realize preliminary particle interception and active impurity removal before water flow enters the valve body, effectively preventing subsequent valve core sticking; the water inlet is buffered by the water hammer prevention mechanism, filtered by the anti-blocking mechanism, and then pressure stabilized by the anti-cavitation mechanism, and finally enters the valve body, is output after temperature adjustment and sterilization treatment by the temperature control mechanism, realizes a coherent process of multi-stage filtering, buffering and adjustment of water flow from the water inlet to the water outlet, and achieves the comprehensive effects of reducing water hammer impact, avoiding cavitation damage, improving water cleanliness and temperature control stability.

[0009] Further, the valve body mechanism includes a balance valve body, a blowdown valve, a water inlet precursor, a first flow rate sensor, a first temperature sensor, and a thermoelectric actuator. The water inlet precursor and the balance valve body are in communication. The blowdown valve and the balance valve body are in communication. The balance valve body is provided with a constant temperature cavity. The balance valve body is provided with a thermal sterilization cavity. The balance valve body is provided with a water inlet. The balance valve body is provided with a water outlet. The water inlet and the water inlet precursor are in communication. The water hammer prevention mechanism, the anti-cavitation mechanism, and the anti-blocking mechanism are located in the water inlet precursor. The temperature control mechanism is located in the balance valve body. The water inlet and the constant temperature cavity are in communication. The constant temperature cavity and the thermal sterilization cavity are in communication. The first flow rate sensor and the first temperature sensor are located at the water outlet. The thermoelectric actuator is fastened to the balance valve body.

[0010] By adopting the technical scheme, the balance valve body serves as a main pressure-bearing shell, and is internally provided with a constant-temperature cavity and a thermal sterilization cavity, which are respectively used for hot water constant-temperature adjustment and high-temperature sterilization treatment, and the valve body shell is provided with a water inlet and a water outlet to form a main flow path, the water inlet is communicated with the water inlet precursor to realize external water source introduction; the blowdown valve is communicated with the balance valve body and is used for periodic release of deposits and incrustation to maintain the internal clean operation state of the system; the water hammer prevention mechanism, the anti-cavitation mechanism and the anti-blocking mechanism are centrally arranged in the water inlet precursor to form multiple steady flow and filtration protection of the water inlet initial end; the temperature control mechanism is arranged in the balance valve body to provide accurate regulation and control for the constant-temperature cavity and the thermal sterilization cavity; the first flow rate sensor and the first temperature sensor are arranged at the water outlet to realize real-time monitoring of the water outlet state and improve the response capability of water temperature and flow rate feedback; the thermoelectric actuator is tightly connected with the balance valve body and is responsible for driving the internal temperature control structure to act according to the sensing data, so as to realize dynamic adjustment of the water outlet temperature; in the whole working process, after the water flow is introduced by the water inlet precursor, it is purified and stabilized by the protection mechanism in turn, enters the constant-temperature cavity for temperature adjustment, and then enters the thermal sterilization cavity for high-temperature treatment, and finally is discharged from the water outlet, during which the first temperature and flow rate sensor continuously feeds back signals to the thermoelectric actuator for adjustment, realizing linkage control of constant temperature, sterilization, blowdown and intelligent feedback, and achieving the comprehensive technical effects of stable water outlet, strong anti-pollution ability and rapid response.

[0011] Further, the temperature control mechanism includes a constant-temperature control assembly and a constant-temperature thermal sterilization assembly, the constant-temperature control assembly is located in the constant-temperature cavity, the constant-temperature thermal sterilization assembly is located in the constant-temperature thermal sterilization assembly, the constant-temperature control assembly and the balance valve body are tightly connected, and the constant-temperature thermal sterilization assembly and the balance valve body are tightly connected.

[0012] By adopting the technical scheme, the thermostatic control assembly is arranged in the thermostatic cavity and is tightly connected with the balance valve body, serving as a core temperature adjusting module. The thermostatic control assembly adjusts the positional relationship between the adjusting valve core and the control piston according to the real-time state of the water flow, controls the mixing ratio of cold and hot water, ensures that the outlet water temperature is constant in the set interval of 55-60℃, and realizes the function A thermostatic control effect. When the system detects that the water temperature is lower than the preset lower limit (for example, less than 68℃) during sterilization, the thermostatic heat sterilization assembly starts the function B, pushes the sterilization valve core and the auxiliary hydraulic push rod through the temperature control element, cuts off the conventional outlet water channel, forces the water flow into the heat sterilization channel, realizes that the temperature of the local area is rapidly increased to more than 70℃, and maintains the set time to complete the sterilization process. When the system is in the electric heating state (for example, the hot water return water temperature is continuously lower than the threshold value), the function C electric sterilization process is realized through the thermoelectric actuator control, the mixing ratio of cold and hot water is disabled, and the water circulation is forced to heat, so that the sterilization process is completely completed. During the working process of the whole temperature control mechanism, the temperature is accurately adjusted through the thermostatic control assembly, and the thermostatic heat sterilization assembly and the thermostatic heat sterilization assembly cooperatively perform the timed high-temperature disinfection. The linkage of the two ensures that the outlet water is stable and efficient in bacterial inhibition. In cooperation with the forced conversion of the heat sterilization channel, the heat purification effect of constant temperature fluctuation, significant reduction of bacterial content and no chemical disinfection medium is realized.

[0013] Further, the thermostatic control assembly comprises a second temperature sensor, a second flow rate sensor, an adjusting piston, an adjusting valve core, a first electric actuator and a first reset elastic member. The second temperature sensor and the second flow rate sensor are tightly connected with the balance valve body. The first electric actuator and the adjusting valve core are in transmission connection. The adjusting piston and the adjusting valve core are tightly connected. The adjusting piston and the balance valve body are in abutment. The balance valve body is provided with a bypass hole. The adjusting valve core and the balance valve body are in sliding connection. The bypass hole is located below the adjusting valve core. The thermostatic cavity and the bypass hole are in communication. The bypass hole and the heat sterilization cavity are in communication. The first reset elastic member and the adjusting piston are tightly connected. The first reset elastic member and the balance valve body are tightly connected.

[0014] By adopting the technical scheme, the second temperature sensor and the second flow rate sensor are fastened to the balance valve body respectively, real-time collection of water flow temperature and flow rate signals in the constant temperature cavity is realized, and data is fed back to the control unit as a basis for adjustment; the first electric actuator is in transmission connection with the adjusting valve core, drives the adjusting valve core to move along the axial direction after receiving the adjustment instruction, and realizes dynamic allocation of cold and hot water ratio; the adjusting piston is fastened to the adjusting valve core and abuts against the balance valve body, as a guide and limiting support component, to ensure the stability of the valve core operation; the adjusting valve core and the balance valve body are in sliding connection, and a bypass hole is arranged below and corresponds to the adjusting valve core, the bypass hole is in communication with the constant temperature cavity and the thermal sterilization cavity respectively, when the adjusting valve core is at the set opening position, the opening degree of the bypass hole can be accurately controlled by adjusting the sliding stroke, to realize stable mixing of cold and hot water in the constant temperature cavity and provide a constant flow basis for subsequent thermal sterilization; one end of the first reset elastic member is fastened to the adjusting piston, and the other end is fastened to the balance valve body, to provide a reverse elastic force to ensure that the adjusting mechanism automatically returns to the original position in the absence of electricity, and has the structure self-resetting function; in the working process of the whole constant temperature control assembly, after the water flow enters the constant temperature cavity, signal collection is first carried out by the second temperature and flow rate sensor, then the adjusting piston-adjusting valve core assembly is driven by the first electric actuator to adjust the flow path opening degree according to the feedback signal, so that the mixed water temperature is quickly and stably controlled in the target interval, the adjusting process is continuous and the response is fast, the first reset elastic member ensures the structural safety and passive recovery capability, and finally the intelligent constant temperature control effect of no manual intervention, accurate temperature control, fast response speed and small water temperature fluctuation is achieved

[0015] Further, the constant temperature thermal sterilization assembly includes a third temperature sensor, a third flow rate sensor, a sterilization valve core, a bypass piston, a second electric actuator and a second reset elastic member, the third temperature sensor and the third flow rate sensor are fastened to the balance valve body, the second electric actuator is fastened to the balance valve body, the second electric actuator is in transmission connection with the sterilization valve core, the sterilization valve core is in sliding connection with the balance valve body, the sterilization valve core is fastened to the bypass piston, the bypass piston abuts against the balance valve body, the second reset elastic member is fastened to the balance valve body, and the bypass piston is fastened to the second reset elastic member.

[0016] By adopting the technical scheme, the third temperature sensor and the third flow rate sensor are fastened to the balance valve body and are respectively used for monitoring the temperature and the flow rate in the sterilization cavity in real time, and when it is detected that the water temperature is lower than a sterilization threshold or the flow rate is insufficient, the system is triggered to enter a sterilization mode; the second electric actuator is fastened to the balance valve body and is used for driving the sterilization valve core to move axially, and the second electric actuator is in transmission connection with the sterilization valve core, so that the actuator signal action can be directly transmitted to the valve core mechanism; the sterilization valve core and the balance valve body are in a sliding connection structure, the sliding connection structure can accurately control the on-off flow path under the driving of the electric actuator, the front end of the sliding connection structure is fastened to the bypass piston to form an integrated opening and closing unit; one end of the bypass piston abuts against the balance valve body, so that the channel sealing is reliable in a static state, and the bypass piston also provides rigid support as a force transmission base; one end of the second reset elastic member is fastened to the bypass piston, and the other end of the second reset elastic member is fastened to the balance valve body, so that the second reset elastic member can provide a restoring force to make the bypass piston and the sterilization valve core return to the initial closed position after power-off or sterilization is completed; in the working process, water flows into the thermal sterilization cavity from the constant-temperature cavity, the third temperature sensor and the flow rate sensor detect the water inflow state, when the water temperature does not reach the set sterilization threshold (such as 70 DEG C), the second electric actuator is started to push the sterilization valve core and the integrated bypass piston to slide and open the bypass path, water is guided into the water return channel for circulation and heating, and high temperature is continuously maintained in the sterilization cavity, so that the thermal inactivation of bacteria and viruses is realized; after sterilization is completed, the system stops heating, the bypass piston is closed by the elastic force of the second reset elastic member, and the system returns to normal flow; the structure has full-automatic, high-reliable and feedback sterilization control capability, and achieves the comprehensive effects of sterile water outlet, safe constant temperature, no chemical treatment and high sanitary requirement of the life hot water system.

[0017] Further, the waterproof hammer mechanism includes a spherical impeller and a one-way flow stabilizing assembly, the spherical impeller is rotationally connected to the water inlet body, the one-way flow stabilizing assembly is clamped to the spherical impeller, the one-way flow stabilizing assembly includes an outer ratchet wheel, an inner ratchet wheel, a ratchet block and a leaf spring, the spherical impeller is fastened to the inner ratchet wheel, the inner ratchet wheel is rotationally connected to the water inlet body, the outer ratchet wheel is fastened to the water inlet body, the ratchet block is hinged to the inner ratchet wheel, the leaf spring is fastened to the ratchet block, the leaf spring is fastened to the inner ratchet wheel, and the ratchet block is clamped to the outer ratchet wheel.

[0018] By adopting the technical scheme, the water hammer mechanism realizes the buffering and inhibiting function of fluid mutation impact through the structural configuration including the spherical impeller and the one-way flow stabilizing assembly; the spherical impeller is rotationally connected with the water inlet body and serves as a front end sensing member, can rotate freely when the water flows, forms rotational inertia to absorb the kinetic energy of the water flow; the spherical impeller is clamped with the one-way flow stabilizing assembly and is tightly connected with the inner ratchet wheel, the inner ratchet wheel is rotationally connected with the water inlet body, so that the spherical impeller can rotate in linkage with the inner ratchet wheel without slipping; the outer ratchet wheel is tightly connected with the water inlet body to form an integral fixed shell, the ratchet block is hinged with the inner ratchet wheel, and the centrifugal force during rotation pushes the ratchet block to deflect to the meshing position of the outer ratchet wheel to complete the one-way locking; the plate spring member is tightly connected with the ratchet block and the inner ratchet wheel respectively to provide a reset force and a force guide to ensure that the ratchet block can be reset and kept in the disengaged state under no impact or reverse rotation; the ratchet block is clamped with the outer ratchet wheel to realize that when the spherical impeller reversely rotates or suddenly encounters water hammer impact, the ratchet structure is locked and transmitted instantaneously to limit the spread of the directional shock of the water flow; in the specific working process, when the water flow is smooth, the spherical impeller rotates with the water flow, and the one-way flow stabilizing assembly is in a free disengaged state without interfering with the main channel fluid; when the reverse water hammer caused by closing the valve or sudden water stop is encountered, the spherical impeller has a reverse rotation tendency, drives the inner ratchet wheel to rotate relative to the outer ratchet wheel, and the ratchet block is immediately clamped into the recessed teeth of the outer ratchet wheel under the elastic force of the plate spring member to achieve instantaneous braking, thereby rapidly absorbing and limiting the spread of the reverse kinetic energy, effectively relieving the impact wave and noise problem caused by pressure mutation; the overall structure uses the combination principle of rotational resistance and ratchet limiting to achieve the water hammer inhibiting effect of automatic response without relying on electronic components, compact structure, strong impact resistance and prolonged service life of the pipeline system.

[0019] Further, the anti-icing mechanism includes a first valve cage, a second valve cage, a third valve cage, a fourth valve cage, and an opening and closing motor, the opening and closing motor is tightly connected with the water inlet body, the opening and closing motor is in transmission connection with the first valve cage, the fourth valve cage is tightly connected with the water inlet body, the third valve cage is tightly connected with the fourth valve cage, the second valve cage is tightly connected with the third valve cage, the first valve cage is rotationally connected with the second valve cage, and the first valve cage, the second valve cage, the third valve cage and the fourth valve cage are all provided with a communication port, the communication port has a diameter gradually decreasing along the first valve cage, the second valve cage, the third valve cage and the fourth valve cage.

[0020] By adopting the technical scheme, the anti-cavitation mechanism is configured by a multi-stage sleeve structure including a first valve cage, a second valve cage, a third valve cage, a fourth valve cage and an opening and closing motor, so that the function of staged slow release and cavitation suppression of the fluid pressure drop process is realized; the opening and closing motor is tightly connected with the water inlet body and serves as a power source to drive the first valve cage to realize axial or rotary action, so as to adjust the opening state of the entire anti-cavitation mechanism; the first valve cage and the second valve cage are in a rotary connection relationship, and realize multi-stage throttling starting adjustment under the driving of the motor; the second valve cage is tightly connected with the third valve cage, and the third valve cage is tightly connected with the fourth valve cage, and finally the entire structure is tightly fixed with the water inlet body through the fourth valve cage, forming a stable structure support chain; the four valve cages are all provided with communication ports, the communication ports are arranged in stages along the inner diameter in the direction of the water flow path, and the communication ports form a continuous throttling section which is gradually contracted, so that the water flow rate is gradually increased and the pressure is gradually reduced; in the specific working process, the water flow is introduced into the entire sleeve structure through the first valve cage which is opened and controlled by the opening and closing motor, passes through the communication ports between the valve cages in turn, the flow passage cross section is gradually contracted, the water flow speed is gradually increased and the static pressure is gradually reduced on the premise of maintaining the flow rate, the formation and collapse of local bubbles caused by sudden pressure drop are effectively controlled, so that the erosion and damage of the valve body inner wall and sensitive components caused by cavitation are significantly weakened; based on the working principle of multi-stage pressure reduction and slow release of cavitation energy, the structure has the characteristics of fast response, compact structure and easy modular maintenance by combining mechanical diameter limiting and guided flow splitting, and finally realizes the technical effects of effectively reducing cavitation intensity, prolonging equipment service life, improving system fluid stability and operation safety.

[0021] Further, the anti-blocking mechanism includes a filter screen, an anti-blocking motor and a valve plate, the filter screen and the water inlet body are slidingly connected, the filter screen is in the shape of a quarter of a circle, the filter screen is provided with a sliding protrusion, the valve plate and the water inlet body are rotatably connected, the filter screen and the valve plate are tightly connected, the water inlet body is provided with a filter cavity, the filter cavity is in the shape of a half circle, the anti-blocking motor and the water inlet body are tightly connected, the valve plate and the filter cavity are rotatably connected, the anti-blocking motor and the valve plate are in transmission connection, the water inlet body is provided with a sliding groove, the sliding protrusion and the sliding groove are in sliding connection, the water inlet body is provided with a cleaning water valve, and the water inlet body is provided with a discharge port.

[0022] By adopting the technical scheme, the filter screen is slidingly connected with the water inlet precursor, is in a quarter of a circular arc shape, and is installed in a filter cavity provided on the water inlet precursor; the filter cavity is in a half of a circular arc shape, and provides a semicircular containing space for limiting the impurity deposition area; the filter screen is provided with a sliding protrusion, the sliding protrusion is slidingly connected with a sliding groove provided on the water inlet precursor, is used for limiting the movement path of the filter screen and enhancing the positioning stability of the filter screen under the impact of water flow; the filter screen is tightly connected with the valve plate, so that the two are cooperatively operated as a whole; the valve plate is in a rotating connection relationship with the water inlet precursor, is driven to rotate by the anti-blocking motor, and realizes the structure switching of different filtering states or flow channel directions; the anti-blocking motor is tightly connected with the water inlet precursor, and forms a transmission connection structure with the valve plate, so as to provide power input to drive the valve plate to rotate and control the opening and closing or position conversion of the filter assembly; the water inlet precursor is provided with a cleaning water valve and a discharge port, so that when maintenance or pollution discharge is needed, an external water source or impurities can be guided to be discharged, and a standby dredging passage is realized in the structure function; in the working process, water enters the main channel through the filter screen, and the particulate impurities are intercepted on the outer surface of the filter screen; the filter cavity inside is used as a deposition buffer area to preliminarily accommodate the impurities; the anti-blocking motor can timely drive the valve plate to rotate and adjust the filtering state; the discharge port is used for releasing the accumulated impurities at regular intervals; the cleaning water valve is used for introducing the back pressure water flow to assist in discharging; the whole structure realizes the anti-blocking effect by using physical filtering, structural limiting and power rotating modes, has the characteristics of simple structure, clear response and easy maintenance, and achieves the technical effects of improving the cleanliness of water flow, avoiding the blockage of the main channel, and improving the continuous operation stability of the equipment.

[0023] Further, the waterproof hammer mechanism further comprises a linkage assembly, the linkage assembly comprising a micro electric cylinder, a clamping moving block, a valve block, an electromagnetic block, a sliding block and a third reset elastic member, the micro electric cylinder being tightly connected with the water inlet precursor, the micro electric cylinder being in transmission connection with the clamping moving block, the valve block being tightly connected with the clamping moving block, the valve block being located at the discharge port, the electromagnetic block being tightly connected with the clamping moving block, the electromagnetic block and the sliding block being in magnetic pole attraction transmission, the third reset elastic member being tightly connected with the sliding block and the electromagnetic block, the sliding block being provided with an abutting inclined surface and a clamping straight surface, the abutting inclined surface being in abutment with the ratchet block, the clamping straight surface being in clamping connection with the ratchet block, and the sliding block being in sliding connection with the clamping moving block.

[0024] By adopting the technical scheme, the linkage assembly comprises a micro electric cylinder, a clamping moving block, a valve block, an electromagnetic block, a sliding block and a third reset elastic member, and constitutes a combined structure of multi-stage response and magnetic control linkage; the micro electric cylinder is fastened to the water inlet body and serves as a linear driving device for providing initial thrust; the micro electric cylinder is in transmission connection with the clamping moving block to drive linear movement of the clamping moving block; one end of the clamping moving block is fastened to the valve block, and the valve block is located at the discharge port; when the system is triggered and controlled, the valve block moves with the clamping moving block to open or close the discharge port, thereby realizing flow path switching; the electromagnetic block is also fastened to the clamping moving block and drives the sliding block arranged opposite to the clamping moving block to move synchronously through magnetic pole attraction force, and the two are in non-contact transmission without rigid connection; the sliding block is in sliding connection with the clamping moving block and has a guiding function of limiting displacement direction; the sliding block is provided with an abutting inclined surface and a clamping straight surface; the abutting inclined surface abuts against the ratchet block during magnetic attraction movement of the sliding block, so that the ratchet block is angularly displaced under the structure pre-pressing; after the clamping straight surface meshes with the ratchet block, structural locking is formed to limit rebound movement of the ratchet block; the sliding block is fastened to the third reset elastic member, and the other end of the third reset elastic member is fastened to the electromagnetic block; in the power-off or released state, the third reset elastic member makes the sliding block return to the original position through elastic potential energy; in the working process, when the system detects an abnormal water hammer trend or is triggered by electric control, the micro electric cylinder pushes the clamping moving block to drive the valve block to close the discharge port, and the electromagnetic block attracts the sliding block through magnetic force, so that the sliding block moves along a preset track, the abutting inclined surface on the sliding block meshes with the ratchet block to generate structural abutment and limiting, and finally mechanical locking is completed through the clamping straight surface to inhibit the propagation of the reverse impact of the spherical impeller; when the system returns to normal, the electromagnetic attraction is released, and the third reset elastic member pushes the sliding block and the electromagnetic block to return to the original position; the mechanism is based on the electric-magnetic-elastic linkage mechanism and constitutes an auxiliary water hammer suppression and regulation unit, has the characteristics of rapid reaction, structure self-resetting and automatic unlocking, and significantly improves the reliability and secondary impact response capability of the water hammer prevention mechanism.

[0025] Further, the water hammer prevention mechanism further comprises a damper, a water hammer prevention piston, a communication cylinder, a communication pipe, a first buffer elastic member, a buffer rod and a second buffer elastic member; the damper and the water hammer prevention piston are fastened together, the damper and the first buffer elastic member are fastened together, the first buffer elastic member and the communication cylinder are fastened together, the water hammer prevention piston and the communication cylinder are in sliding connection, the communication cylinder and the water inlet body are in communication, the communication cylinder and the communication pipe are in communication, the second buffer elastic member and the buffer rod are fastened together, the second buffer elastic member and the communication pipe are fastened together, the buffer rod abuts against the valve plate, and the buffer rod and the communication pipe are in sliding connection.

[0026] By adopting the technical scheme, the damper is fastened with the waterproof hammer piston, the front end energy blocking unit as a whole generates a blocking effect when the piston is subjected to an impact thrust; the damper is fastened with the first buffer elastic member, and the first buffer elastic member is fastened with the communication cylinder, thereby forming a series energy absorption structure; when the waterproof hammer piston slides in the communication cylinder, the damper and the first buffer elastic member are pushed to axially elastically deform, so that the water hammer kinetic energy is converted into an elastic deformation amount and a small amount of heat energy for dissipation; the waterproof hammer piston and the communication cylinder are in a sliding connection relationship, so as to ensure that the waterproof hammer piston can axially move in the cylinder body when subjected to pressure excitation; one end of the communication cylinder is communicated with the water inlet precursor, and the other end is communicated with the communication pipe, so that the impact wave kinetic energy can be conducted to the rear buffer assembly along the flow channel; the second buffer elastic member is arranged in the communication pipe, the second buffer elastic member is fastened with the buffer rod, and the second buffer elastic member is also fastened with the communication pipe, thereby forming an axial symmetric support structure; when the kinetic energy from the communication cylinder is transmitted along the communication pipe, the buffer rod is pushed to slide in the communication pipe; the buffer rod abuts against the valve plate, so as to transmit the buffer displacement to the valve plate and realize fine adjustment or slow release of the opening and closing state of the valve plate; the buffer rod and the communication pipe are in a sliding connection, so as to be automatically reset after pressure release is completed; in the specific working process, when the end of the water inlet precursor is subjected to water hammer impact, kinetic energy first acts on the waterproof hammer piston, so that the waterproof hammer piston slides in the communication cylinder and compresses the first buffer elastic member, and the damper delays the motion response; then, pressure is conducted backward through the communication pipe, the second buffer elastic member absorbs the remaining kinetic energy, and the buffer rod pushes the valve plate abutting against the buffer rod to perform fine position adjustment and further release the impact potential energy; the structure has four-stage slow release paths of damping-elasticity-flow guide-buffering, effectively decomposes the instantaneous water hammer pressure into multiple buffer behaviors, and finally achieves the comprehensive effects of significantly reducing the pressure peak value of the valve body structure, inhibiting the rebound of water flow mutation, improving the impact resistance and dynamic stability of the system.

[0027] Compared with the prior art, the beneficial effects of the present application are:

[0028] The device realizes double inhibition of water hammer by integrating the spherical impeller, the one-way flow stabilizing assembly, the ratchet limiting system and the linkage electromagnetic limiting locking structure in the water inlet body. The spherical impeller rotates in response to the water flow inertia, and is rigidly connected with the inner ratchet wheel, cooperates with the outer ratchet wheel, the leaf spring and the hinged ratchet block to form one-way locking. When the water flow impacts reversely, the ratchet block is clamped into the inner teeth of the outer ratchet wheel, and the impact is absorbed through the ratchet limiting. At the same time, the micro electric cylinder drives the clamping moving block to close the discharge valve port, the magnetic attraction clamping is formed between the sliding block and the ratchet block, the mechanical auxiliary locking mechanism is formed, and the two-stage limiting linkage ensures that the water hammer pressure is not transmitted to the main valve body structure, so that the reverse impact oscillation and the oscillation rebound are effectively inhibited. The device inhibits cavitation through the "four-stage nested throttle valve cage structure", and the continuous radial contraction communication ports are formed along the first-stage to fourth-stage valve cage sleeves, and the continuity speed is improved and the pressure is decreased during the water flow. The stages of the valve cage are limited in the water inlet body through fastening and rotary connection, and the uniform differential pressure gradient generated by the multi-stage decreasing of the flow passage cross section reduces the bubble generation caused by the local pressure drop, and prevents the high-frequency impact of the bubble collapse on the inner wall. The anti-blocking mechanism adopts the arc filter screen-valve plate linkage structure and is arranged in the water inlet body filter cavity, the installation limiting is realized through the cooperation of the sliding protrusion and the sliding groove, the filter screen is a quarter of a circular arc structure and is attached to the half circular arc wall surface of the filter cavity, and the valve plate rotation controls the opening and closing of the discharge passage. The anti-blocking motor drives the valve plate to rotate and switch the passage, and the structure can realize the impurity passage switching and discharge. At the same time, the sliding abutment between the buffer rod and the discharge valve plate can absorb the structure displacement response and prevent the valve plate from being stuck by water impact. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a general structure schematic diagram of the application;

[0030] Figure 2 It is a valve body mechanism structure schematic diagram of the application;

[0031] Figure 3 It is a constant temperature control assembly structure schematic diagram of the application;

[0032] Figure 4 It is a water hammer prevention mechanism structure schematic diagram of the application;

[0033] Figure 5 It is a one-way flow stabilizing assembly structure schematic diagram of the application;

[0034] Figure 6 It is a anti-cavitation mechanism structure schematic diagram of the application;

[0035] Figure 7 It is a anti-blocking mechanism structure schematic diagram of the application;

[0036] Figure 8 It is a filter screen structure schematic diagram of the application;

[0037] Figure 9 Structure diagram of linkage assembly of the present application;

[0038] Figure 10 Structure diagram of valve block of the present application;

[0039] Figure 11 Structure diagram of communication cylinder of the present application.

[0040] In the figure: 1, valve body mechanism; 11, balance valve body; 111, constant temperature cavity; 112, thermal sterilization cavity; 113, water inlet; 114, water outlet; 115, bypass hole; 12, blowdown valve; 13, water inlet body; 131, filter cavity; 132, sliding groove; 133, clean water valve; 134, discharge port; 14, first flow rate sensor; 15, first temperature sensor; 16, thermoelectric actuator; 2, temperature control mechanism; 21, constant temperature control assembly; 211, second temperature sensor; 212, second flow rate sensor; 213, adjusting piston; 214, adjusting valve core; 215, first electric actuator; 216, first reset elastic member; 22, constant temperature thermal sterilization assembly; 221, third temperature sensor; 222, third flow rate sensor; 223, sterilization valve core; 224, bypass piston; 225, second electric actuator; 226, second reset elastic member; 3, water hammer prevention mechanism; 31, spherical impeller; 32, unidirectional flow stabilizing assembly; 321, outer ratchet wheel; 322, inner ratchet wheel; 323, ratchet block; 324, leaf spring member; 33, linkage assembly; 331, micro electric cylinder; 332, clamping moving block; 333, valve block; 334, electromagnetic block; 335, sliding block; 3351, abutting inclined surface; 3352, clamping straight surface; 336, third reset elastic member; 34, damper; 35, water hammer prevention piston; 36, communication cylinder; 37, communication pipe; 38, first buffer elastic member; 39, buffer rod; 310, second buffer elastic member; 4, anti-cavitation mechanism; 41, primary valve cage; 411, communication port; 42, secondary valve cage; 43, tertiary valve cage; 44, quaternary valve cage; 45, opening and closing motor; 5, anti-blocking mechanism; 51, filter screen; 511, sliding protrusion; 52, anti-blocking motor; 53, valve plate. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0042] Please refer to Figure 1 - Figure 11As shown, the present application provides a multifunctional constant temperature balance valve with sterilization function technical scheme:

[0043] The balance valve comprises a valve body mechanism 1, a temperature control mechanism 2, a water hammer prevention mechanism 3, a cavitation prevention mechanism 4 and a blockage prevention mechanism 5. The temperature control mechanism 2 and the valve body mechanism 1 are tightly connected. The water hammer prevention mechanism 3 and the valve body mechanism 1 are tightly connected. The cavitation prevention mechanism 4 and the valve body mechanism 1 are tightly connected. The blockage prevention mechanism 5 and the valve body mechanism 1 are tightly connected. The water hammer prevention mechanism 3 is located at one end of the valve body mechanism 1 away from the temperature control mechanism 2. The blockage prevention mechanism 5 is located between the cavitation prevention mechanism 4 and the water hammer prevention mechanism 3.

[0044] By adopting the above technical scheme, the valve body mechanism 1 serves as a core shell component, bears all internal elements and realizes water inlet and water outlet functions. The temperature control mechanism 2 is tightly connected with the valve body mechanism 1 to realize constant temperature adjustment and thermal sterilization control. The water hammer prevention mechanism 3 is arranged at one end of the valve body mechanism 1 away from the temperature control mechanism 2 to realize buffer absorption of sudden water flow impact through structural isolation. The cavitation prevention mechanism 4 is tightly connected with the valve body mechanism 1 and is located on one side of the blockage prevention mechanism 5 to reduce instantaneous pressure difference and weaken cavitation effect through a staged throttling structure. The blockage prevention mechanism 5 is located between the cavitation prevention mechanism 4 and the water hammer prevention mechanism 3 and is provided with a filtering and cleaning assembly on the structure to realize preliminary particle interception and active impurity removal before water flow enters the valve body, effectively preventing subsequent valve core jamming. Water inlet is buffered by the water hammer prevention mechanism 3, filtered by the blockage prevention mechanism 5 and stabilized by the cavitation prevention mechanism 4, and finally enters the valve body interior to be output after temperature adjustment and sterilization treatment by the temperature control mechanism 2, realizing a coherent process of multi-stage filtering, buffering and adjustment of water flow from the water inlet 113 to the water outlet 114, and achieving the comprehensive effects of reducing water hammer impact, avoiding cavitation damage, improving water cleanliness and temperature control stability.

[0045] Further, the valve body mechanism 1 comprises a balance valve body 11, a blowdown valve 12, a water inlet precursor 13, a first flow rate sensor 14, a first temperature sensor 15 and a thermoelectric actuator 16. The water inlet precursor 13 and the balance valve body 11 are communicated. The blowdown valve 12 and the balance valve body 11 are communicated. The balance valve body 11 is provided with a constant temperature cavity 111. The balance valve body 11 is provided with a thermal sterilization cavity 112. The balance valve body 11 is provided with a water inlet 113. The balance valve body 11 is provided with a water outlet 114. The water inlet 113 and the water inlet precursor 13 are communicated. The water hammer prevention mechanism 3, the cavitation prevention mechanism 4 and the blockage prevention mechanism 5 are located in the water inlet precursor 13. The temperature control mechanism 2 is located in the balance valve body 11. The water inlet 113 and the constant temperature cavity 111 are communicated. The constant temperature cavity 111 and the thermal sterilization cavity 112 are communicated. The first flow rate sensor 14 and the first temperature sensor 15 are located at the water outlet 114. The thermoelectric actuator 16 is tightly connected with the balance valve body 11.

[0046] By adopting the above technical scheme, the balance valve body 11 is used as a main pressure-bearing shell, and a constant temperature cavity 111 and a thermal sterilization cavity 112 are arranged inside, which are respectively used for hot water constant temperature adjustment and high temperature sterilization treatment, and the valve body shell is provided with a water inlet 113 and a water outlet 114 to form a main flow path, the water inlet 113 is communicated with the water inlet precursor 13 to realize the introduction of external water source; the blowdown valve 12 is communicated with the balance valve body 11, which is used for periodic release of sediment and incrustation to maintain the clean running state of the system; the water hammer prevention mechanism 3, the anti-cavitation mechanism 4 and the anti-blocking mechanism 5 are arranged in the water inlet precursor 13 to form multiple flow stabilization and filtration protection of the water inlet initial end; the temperature control mechanism 2 is arranged in the balance valve body 11 to provide accurate control for the constant temperature cavity 111 and the thermal sterilization cavity 112; the first flow rate sensor 14 and the first temperature sensor 15 are arranged at the water outlet 114 to realize real-time monitoring of the water outlet state and improve the response ability of water temperature and flow rate feedback; the thermoelectric actuator 16 is tightly connected with the balance valve body 11, which is responsible for driving the internal temperature control structure to act according to the sensing data, so as to realize dynamic adjustment of the water outlet temperature; in the whole working process, after the water flow is introduced by the water inlet precursor 13, it is purified and stabilized by the protection mechanism in turn, enters the constant temperature cavity 111 for temperature adjustment, and then enters the thermal sterilization cavity 112 for high temperature treatment, and finally is discharged from the water outlet 114, during which the first temperature and flow rate sensor continuously feeds back signals to the thermoelectric actuator 16 for adjustment, realizing the linkage control of constant temperature, sterilization, blowdown and intelligent feedback, and achieving the comprehensive technical effects of stable water outlet, strong anti-pollution ability and rapid response.

[0047] Further, the temperature control mechanism 2 includes a constant temperature control assembly 21 and a constant temperature thermal sterilization assembly 22, the constant temperature control assembly 21 is located in the constant temperature cavity 111, the constant temperature thermal sterilization assembly 22 is located in the constant temperature thermal sterilization assembly 22, the constant temperature control assembly 21 and the balance valve body 11 are tightly connected, and the constant temperature thermal sterilization assembly 22 and the balance valve body 11 are tightly connected.

[0048] By adopting the above technical scheme, the thermostatic control assembly 21 is arranged in the thermostatic cavity 111 and is tightly connected with the balance valve body 11, serving as a core temperature adjusting module. The thermostatic control assembly 21 adjusts the positional relationship between the adjusting valve core 214 and the control piston according to the real-time state of the water flow, controls the mixing ratio of cold and hot water, ensures that the outlet water temperature is constant in the set interval of 55-60℃, and realizes the function A thermostatic control effect. When the system detects that the water temperature is lower than the preset lower limit (for example, less than 68℃) when using and taking sterilization, the thermostatic heat sterilization assembly 22 starts the function B. The thermostatic heat sterilization assembly 22 drives the sterilization valve core 223 to link with the auxiliary hydraulic push rod through the temperature control element, cuts off the conventional outlet water channel, and makes the water flow forcedly enter the heat sterilization channel, realizes that the temperature of the local area is rapidly increased to more than 70℃, and maintains the set time to complete the sterilization process. When the system is in the electric heating state (for example, the hot water return water temperature continuously is lower than the threshold value), the function C electric sterilization process is realized through the control of the thermoelectric actuator 16, the mixing ratio of cold and hot water is disabled, the water circulation is forcedly heated, and the sterilization process is completely completed. In the working process of the whole temperature control mechanism 2, the temperature is accurately adjusted through the thermostatic control assembly 21, and the thermostatic heat sterilization assembly 22 and the thermostatic heat sterilization assembly 22 cooperatively perform the timed high-temperature disinfection. The linkage of the two ensures that the outlet water is stable and the bacteria are efficiently inhibited. In cooperation with the forced conversion of the heat sterilization channel, the heat purification effect of constant temperature fluctuation, significant reduction of bacterial content and no chemical disinfection medium is realized.

[0049] Further, the thermostatic control assembly 21 comprises a second temperature sensor 211, a second flow rate sensor 212, an adjusting piston 213, an adjusting valve core 214, a first electric actuator 215 and a first reset elastic member 216. The second temperature sensor 211 and the second flow rate sensor 212 are tightly connected with the balance valve body 11. The first electric actuator 215 and the adjusting valve core 214 are in transmission connection. The adjusting piston 213 and the adjusting valve core 214 are tightly connected. The adjusting piston 213 and the balance valve body 11 are in abutment. The balance valve body 11 is provided with a bypass hole 115. The adjusting valve core 214 and the balance valve body 11 are in sliding connection. The bypass hole 115 is located below the adjusting valve core 214. The thermostatic cavity 111 and the bypass hole 115 are in communication. The bypass hole 115 and the heat sterilization cavity 112 are in communication. The first reset elastic member 216 and the adjusting piston 213 are tightly connected. The first reset elastic member 216 and the balance valve body 11 are tightly connected.

[0050] By adopting the technical scheme, the second temperature sensor 211 and the second flow rate sensor 212 are fastened and connected with the balance valve body 11, real-time collection of water flow temperature and flow rate signals in the constant temperature cavity 111 is performed, and data is fed back to the control unit as a regulation basis; the first electric actuator 215 is in transmission connection with the regulating valve core 214, drives the regulating valve core 214 to move along the axial direction after receiving a regulation instruction, and realizes dynamic adjustment of the cold and hot water ratio; the regulating piston 213 is fastened and connected with the regulating valve core 214 and abuts against the balance valve body 11, as a guiding and limiting support component, to guarantee the stability of the valve core operation; the regulating valve core 214 and the balance valve body 11 are in a sliding connection relationship, a bypass hole 115 is correspondingly arranged below the regulating valve core 214, the bypass hole 115 is in communication with the constant temperature cavity 111 and the thermal sterilization cavity 112 respectively, when the regulating valve core 214 is at a set opening degree position, the opening degree of the bypass hole 115 can be accurately controlled by adjusting the sliding stroke, stable mixing of cold and hot water in the constant temperature cavity 111 is realized, and a constant flow basis is provided for subsequent thermal sterilization; one end of the first reset elastic member 216 is fastened and connected with the regulating piston 213, the other end is fastened and connected with the balance valve body 11, reverse elastic force is provided to ensure that the adjusting mechanism automatically returns to the original position in the absence of electricity, and the structure has a self-resetting function; in the working process of the whole constant temperature control assembly 21, after water flow enters the constant temperature cavity 111, signal collection is first performed by the second temperature and flow rate sensor, then the first electric actuator 215 drives the regulating piston 213-regulating valve core 214 assembly to adjust the flow path opening degree according to the feedback signal, so that the mixed water temperature is rapidly and stably controlled in the target interval, the adjusting process is continuous and the response is fast, the first reset elastic member 216 guarantees the structural safety and passive recovery capability, and finally the intelligent constant temperature control effect of no manual intervention, accurate temperature control, fast response speed and small water temperature fluctuation is achieved

[0051] Further, the constant temperature thermal sterilization assembly 22 comprises a third temperature sensor 221, a third flow rate sensor 222, a sterilization valve core 223, a bypass piston 224, a second electric actuator 225 and a second reset elastic member 226, the third temperature sensor 221 and the third flow rate sensor 222 are fastened and connected with the balance valve body 11, the second electric actuator 225 is fastened and connected with the balance valve body 11, the second electric actuator 225 is in transmission connection with the sterilization valve core 223, the sterilization valve core 223 is in sliding connection with the balance valve body 11, the sterilization valve core 223 is fastened and connected with the bypass piston 224, the bypass piston 224 abuts against the balance valve body 11, the second reset elastic member 226 is fastened and connected with the balance valve body 11, and the bypass piston 224 is fastened and connected with the second reset elastic member 226.

[0052] By adopting the above technical scheme, the third temperature sensor 221 and the third flow rate sensor 222 are in fast connection with the balance valve body 11, and are respectively used for monitoring the temperature and flow rate in the sterilization cavity in real time. When it is detected that the water temperature is lower than the sterilization threshold or the flow rate is insufficient, the system is triggered to enter the sterilization mode; the second electric actuator 225 is in fast connection with the balance valve body 11, and is used for driving the sterilization valve core 223 to move axially. The transmission connection between the second electric actuator 225 and the sterilization valve core 223 ensures that the actuator signal action can be directly transmitted to the valve core mechanism; the sliding connection structure between the sterilization valve core 223 and the balance valve body 11 can accurately control the on-off flow path under the driving of the electric actuator. The front end of the sterilization valve core 223 is in fast connection with the bypass piston 224, forming an integrated linkage opening and closing unit; one end of the bypass piston 224 abuts against the balance valve body 11, ensuring that the channel sealing is reliable in the static state, and at the same time, providing rigid support as a force transmission base; one end of the second reset elastic member 226 is in fast connection with the bypass piston 224, and the other end is in fast connection with the balance valve body 11. After power-off or sterilization is completed, the second reset elastic member 226 can provide a restoring force, so that the bypass piston 224 and the sterilization valve core 223 restore to the initial closed position as a whole; in the working process, the water flow enters the thermal sterilization cavity 112 from the constant temperature cavity 111. When the water temperature does not reach the set sterilization threshold (such as 70 DEG C), the second electric actuator 225 is started, the sterilization valve core 223 and the linkage bypass piston 224 are pushed to slide as a whole to open the bypass path, and the water flow is guided into the water return channel for circulation and heating. At the same time, high temperature is continuously maintained in the sterilization cavity, so as to realize thermal inactivation of bacteria and viruses; after sterilization is completed, the system stops heating, the bypass piston 224 is closed by the elastic force of the second reset elastic member 226, and the system returns to normal flow. The structure has full-automatic, high-reliable and feedback sterilization control capability, and achieves the comprehensive effects of sterile water outlet, safe constant temperature, no chemical treatment and high sanitary requirement of life hot water system.

[0053] Further, the water hammer prevention mechanism 3 includes a spherical impeller 31 and a one-way flow stabilizing assembly 32. The spherical impeller 31 is rotationally connected with the water inlet body 13. The one-way flow stabilizing assembly 32 is clamped with the spherical impeller 31. The one-way flow stabilizing assembly 32 includes an outer ratchet wheel 321, an inner ratchet wheel 322, a ratchet block 323 and a leaf spring 324. The spherical impeller 31 is fastened with the inner ratchet wheel 322. The inner ratchet wheel 322 is rotationally connected with the water inlet body 13. The outer ratchet wheel 321 is fastened with the water inlet body 13. The ratchet block 323 is hinged with the inner ratchet wheel 322. The leaf spring 324 is fastened with the ratchet block 323. The leaf spring 324 is fastened with the inner ratchet wheel 322. The ratchet block 323 is clamped with the outer ratchet wheel 321.

[0054] By adopting the above technical scheme, the water hammer mechanism 3 realizes the buffering and inhibiting function of fluid sudden impact through the structural configuration including the spherical impeller 31 and the one-way flow stabilizing assembly 32; wherein the spherical impeller 31 is rotationally connected with the water inlet body 13, as a front end sensing member, can freely rotate when the water flows, forms rotational inertia to absorb the kinetic energy of water flow; the spherical impeller 31 is clamped with the one-way flow stabilizing assembly 32, and is tightly connected with the inner ratchet wheel 322, the inner ratchet wheel 322 is rotationally connected with the water inlet body 13, so that it can rotate with the spherical impeller 31 and does not slip; the outer ratchet wheel 321 is tightly connected with the water inlet body 13, forming an integral fixed shell, the ratchet block 323 is hinged with the inner ratchet wheel 322, and is pushed to the meshing position of the outer ratchet wheel 321 by the centrifugal force during rotation to complete the one-way locking; the plate spring 324 is tightly connected with the ratchet block 323 and the inner ratchet wheel 322 respectively, for providing a restoring force and a force guiding, ensuring that the ratchet block 323 can be reset and kept in a disengaged state under no impact or reverse condition; the ratchet block 323 is clamped with the outer ratchet wheel 321, realizing that when the spherical impeller 31 reversely rotates or suddenly encounters water hammer impact, the ratchet structure is locked and transmitted instantly, limiting the propagation of water flow directional shock; in the specific working process, when the water flow is smooth, the spherical impeller 31 rotates with the water flow, and the one-way flow stabilizing assembly 32 is in a free disengaged state without interfering with the main channel fluid; when the reverse water hammer caused by closing the valve or sudden water stop is encountered, the spherical impeller 31 generates a reverse rotation tendency, drives the inner ratchet wheel 322 to rotate relative to the outer ratchet wheel 321, and the ratchet block 323 is immediately clamped into the recessed teeth of the outer ratchet wheel 321 under the elastic force of the plate spring 324, realizing instantaneous braking, thereby rapidly absorbing and limiting the reverse kinetic energy propagation, effectively relieving the impact wave and noise problem caused by pressure sudden change; the overall structure uses the combination principle of rotational resistance and ratchet limiting to achieve automatic response without relying on electronic components, compact structure, strong impact resistance, and water hammer inhibition effect of prolonging the service life of the pipeline system.

[0055] Further, the anti-icing mechanism 4 includes a first valve cage 41, a second valve cage 42, a third valve cage 43, a fourth valve cage 44, and an opening and closing motor 45, the opening and closing motor 45 is tightly connected with the water inlet body 13, the opening and closing motor 45 is in transmission connection with the first valve cage 41, the fourth valve cage 44 is tightly connected with the water inlet body 13, the third valve cage 43 is tightly connected with the fourth valve cage 44, the second valve cage 42 is tightly connected with the third valve cage 43, the first valve cage 41 is rotationally connected with the second valve cage 42, the first valve cage 41, the second valve cage 42, the third valve cage 43 and the fourth valve cage 44 are all provided with a communication port 411, the communication port 411 has a diameter gradually decreasing along the first valve cage 41, the second valve cage 42, the third valve cage 43 and the fourth valve cage 44.

[0056] By adopting the above technical scheme, the anti-cavitation mechanism 4 is configured by a multi-stage sleeve structure including a first valve cage 41, a second valve cage 42, a third valve cage 43, a fourth valve cage 44, and an opening and closing motor 45, thereby realizing the functions of staged slow release and cavitation suppression in the fluid pressure drop process. The opening and closing motor 45 is tightly connected with the water inlet body 13 and serves as a power source to drive the first valve cage 41 to realize axial or rotational movement, thereby adjusting the opening state of the entire anti-cavitation mechanism 4. The first valve cage 41 and the second valve cage 42 are in a rotating connection relationship, and under the driving of the motor, multi-stage throttling starting adjustment is realized. The second valve cage 42 is tightly connected with the third valve cage 43, and the third valve cage 43 is tightly connected with the fourth valve cage 44. Finally, the overall structure is tightly fixed with the water inlet body 13 through the fourth valve cage 44, forming a stable structure support chain. The four valve cages are each provided with a communication port 411, and the communication ports 411 are arranged in stages along the inner diameter in the direction of the water flow path, thereby forming a continuous throttling section that gradually shrinks. This can gradually increase the water flow rate and gradually reduce the pressure. In the specific working process, the water flows into the entire sleeve structure through the first valve cage 41 controlled to be opened by the opening and closing motor 45, passes through the communication ports 411 between the valve cages in sequence, and the flow passage cross section gradually shrinks. Under the premise of maintaining the flow rate, the water flow rate gradually increases and the static pressure gradually decreases, thereby effectively controlling the formation and collapse of local bubbles caused by sudden pressure drop, thereby significantly weakening the erosion damage of cavitation to the inner wall of the valve body and sensitive components. Based on the working principle of multi-stage pressure reduction and slow release of cavitation energy, the structure has the characteristics of fast response, compact structure, and easy modular maintenance, and finally realizes the technical effects of effectively reducing cavitation intensity, prolonging equipment service life, improving system fluid stability, and improving operation safety.

[0057] Further, the anti-blocking mechanism 5 includes a filter screen 51, an anti-blocking motor 52, and a valve plate 53. The filter screen 51 is slidingly connected with the water inlet body 13, and the filter screen 51 is in the shape of a quarter of a circle. The filter screen 51 is provided with a sliding protrusion 511. The valve plate 53 is rotatably connected with the water inlet body 13. The filter screen 51 and the valve plate 53 are tightly connected. The water inlet body 13 is provided with a filter cavity 131 in the shape of a half circle. The anti-blocking motor 52 is tightly connected with the water inlet body 13. The valve plate 53 is rotatably connected with the filter cavity 131. The anti-blocking motor 52 is drivingly connected with the valve plate 53. The water inlet body 13 is provided with a sliding groove 132. The sliding protrusion 511 is slidingly connected with the sliding groove 132. The water inlet body 13 is provided with a cleaning water valve 133. The water inlet body 13 is provided with a discharge port 134.

[0058] By adopting the technical scheme, the filter screen 51 is in sliding connection with the water inlet precursor 13 and is in a quarter-arc-like shape, is attached to the inside of the filter cavity 131 provided on the water inlet precursor 13, the filter cavity 131 is in a half-arc-like shape, and provides a semicircular containing space for limiting the impurity deposition area; the filter screen 51 is provided with a sliding protrusion 511, the sliding protrusion 511 is in sliding connection with the sliding groove 132 provided on the water inlet precursor 13, is used for limiting the movement path of the filter screen 51 and enhancing the positioning stability of the filter screen 51 under the impact of water flow; the filter screen 51 is in fastening connection with the valve plate 53, and the two are ensured to act cooperatively as a whole; the valve plate 53 is in rotating connection with the water inlet precursor 13, is driven to rotate by the anti-blocking motor 52, and realizes the structure switching of different filtering states or flow channel directions; the anti-blocking motor 52 is in fastening connection with the water inlet precursor 13 and forms a transmission connection structure with the valve plate 53, provides power input to drive the valve plate 53 to rotate and control the opening and closing or position conversion of the filtering assembly; the water inlet precursor 13 is provided with a cleaning water valve 133 and a discharge port 134, and when maintenance or pollution discharge is needed, a water source can be externally connected or impurities can be discharged, so that a standby dredging passage is realized in the structure function; in the working process, water enters the main channel through the filter screen 51, the particulate impurities are intercepted on the outside surface of the filter screen 51, the inside of the filter cavity 131 serves as a deposition buffer area to preliminarily accommodate the impurities, the anti-blocking motor 52 can timely drive the valve plate 53 to rotate and adjust the filtering state, the discharge port 134 is used for releasing the accumulated impurities at regular intervals, and the cleaning water valve 133 is used for introducing a counter-pressure water flow to assist in discharging; the overall structure realizes the anti-blocking effect by using physical filtering, structural limiting and power rotating modes, has the characteristics of simple structure, clear response and convenient maintenance, and achieves the technical effects of improving water flow cleanliness, avoiding the blockage of the main channel and improving the continuous operation stability of the equipment.

[0059] Further, the waterproof hammer mechanism 3 further comprises a linkage assembly 33, the linkage assembly 33 comprises a micro electric cylinder 331, a clamping moving block 332, a valve block 333, an electromagnetic block 334, a sliding block 335 and a third reset elastic member 336, the micro electric cylinder 331 is in fastening connection with the water inlet precursor 13, the micro electric cylinder 331 is in transmission connection with the clamping moving block 332, the valve block 333 is in fastening connection with the clamping moving block 332, the valve block 333 is located at the discharge port 134, the electromagnetic block 334 is in fastening connection with the clamping moving block 332, the electromagnetic block 334 and the sliding block 335 are in transmission by magnetic poles, the third reset elastic member 336 is in fastening connection with the sliding block 335 and the electromagnetic block 334, the sliding block 335 is provided with an abutting inclined surface 3351, the abutting inclined surface 3351 abuts against the ratchet block 323, the sliding block 335 is provided with a clamping straight surface 3352, the clamping straight surface 3352 clamps the ratchet block 323, and the sliding block 335 is in sliding connection with the clamping moving block 332.

[0060] By adopting the technical scheme, the linkage assembly 33 comprises a micro electric cylinder 331, a clamping moving block 332, a valve block 333, an electromagnetic block 334, a sliding block 335 and a third reset elastic member 336, and a multi-stage response and magnetic control linkage combined structure is formed; the micro electric cylinder 331 is fastened to the water inlet body 13 and serves as a linear driving device for providing an initial thrust; the micro electric cylinder 331 is in transmission connection with the clamping moving block 332 and drives the linear movement of the clamping moving block 332; one end of the clamping moving block 332 is fastened to the valve block 333, and the valve block 333 is located at the discharge port 134; when the system is triggered and controlled, the valve block 333 moves with the clamping moving block 332 to open or close the discharge port 134, so that the flow path is switched; the electromagnetic block 334 is also fastened to the clamping moving block 332 and drives the sliding block 335 arranged opposite to the clamping moving block 332 to move synchronously through magnetic pole attraction, and the two are in non-contact transmission without rigid connection; the sliding block 335 is in sliding connection with the clamping moving block 332 and has a guiding function of limiting the displacement direction; the sliding block 335 is provided with an abutting inclined surface 3351 and a clamping straight surface 3352; the abutting inclined surface 3351 abuts against the ratchet block 323 during the magnetic attraction movement of the sliding block 335, so that the ratchet block 323 is angularly displaced under the structural pre-pressing; after the clamping straight surface 3352 is engaged with the ratchet block 323, the structural locking is formed to limit the rebound movement of the ratchet block 323; the sliding block 335 is fastened to the third reset elastic member 336, and the other end of the third reset elastic member 336 is fastened to the electromagnetic block 334; in the power-off or released state, the sliding block 335 is reset through the elastic potential energy; in the working process, when the system detects an abnormal water hammer trend or is triggered by electric control, the micro electric cylinder 331 pushes the clamping moving block 332 to drive the valve block 333 to close the discharge port 134, and the electromagnetic block 334 attracts the sliding block 335 through magnetic force to make the sliding block 335 move along a preset track; the abutting inclined surface 3351 on the sliding block 335 is engaged with the ratchet block 323 to generate structural abutment and limiting, and finally the mechanical locking is completed through the clamping straight surface 3352 to inhibit the reverse impact propagation of the spherical impeller 31; when the system returns to normal, the electromagnetic attraction is released, and the third reset elastic member 336 pushes the sliding block 335 and the electromagnetic block 334 to reset, and the structure is restored; the mechanism based on the electric-magnetic-elastic linkage mechanism forms an auxiliary water hammer suppression and regulation unit, has the characteristics of rapid reaction, structural self-resetting and automatic unlocking, and significantly improves the reliability and secondary impact response capability of the water hammer prevention mechanism 3.

[0061] Further, the waterproof hammer mechanism 3 further comprises a damper 34, a waterproof hammer piston 35, a communication cylinder 36, a communication pipe 37, a first buffer elastic member 38, a buffer rod 39 and a second buffer elastic member 310, the damper 34 and the waterproof hammer piston 35 are fixedly connected, the damper 34 and the first buffer elastic member 38 are fixedly connected, the first buffer elastic member 38 and the communication cylinder 36 are fixedly connected, the waterproof hammer piston 35 and the communication cylinder 36 are slidingly connected, the communication cylinder 36 and the water inlet body 13 are communicated, the communication cylinder 36 and the communication pipe 37 are communicated, the second buffer elastic member 310 and the buffer rod 39 are fixedly connected, the second buffer elastic member 310 and the communication pipe 37 are fixedly connected, the buffer rod 39 and the valve plate 53 are abutted, and the buffer rod 39 and the communication pipe 37 are slidingly connected.

[0062] By adopting the technical scheme, the damper 34 and the waterproof hammer piston 35 are fixedly connected, the front end energy absorption unit as a whole generates a resistance effect when the piston is subjected to an impact thrust; the damper 34 and the first buffer elastic member 38 are fixedly connected, and the first buffer elastic member 38 is further fixedly connected with the communication cylinder 36, thereby forming a series energy absorption structure, when the waterproof hammer piston 35 slides in the communication cylinder 36, the damper 34 and the first buffer elastic member 38 are pushed to axially elastically deform, thereby converting water hammer kinetic energy into elastic deformation and small heat energy for dissipation; the waterproof hammer piston 35 and the communication cylinder 36 are in a sliding connection relationship, which ensures that the waterproof hammer piston 35 can move axially in the cylinder when subjected to pressure excitation; one end of the communication cylinder 36 is communicated with the water inlet body 13, and the other end is communicated with the communication pipe 37, so that the impact wave kinetic energy can be conducted to the rear buffer assembly along the flow channel; the second buffer elastic member 310 is arranged in the communication pipe 37, the second buffer elastic member 310 is fixedly connected with the buffer rod 39, and the second buffer elastic member 310 is also fixedly connected with the communication pipe 37, thereby forming an axial symmetric support structure, when the kinetic energy from the communication cylinder 36 is transmitted along the communication pipe 37, the buffer rod 39 is pushed to slide in the communication pipe 37; the buffer rod 39 and the valve plate 53 are abutted, the buffer displacement is transmitted to the valve plate 53, and the valve plate 53 is finely adjusted or released; the buffer rod 39 and the communication pipe 37 are in a sliding connection, which can be automatically reset after the pressure release is completed; in the specific working process, when the end of the water inlet body 13 is subjected to water hammer impact, the kinetic energy first acts on the waterproof hammer piston 35, so that the waterproof hammer piston 35 slides in the communication cylinder 36 and compresses the first buffer elastic member 38, and the damper 34 delays the motion response; then, the pressure is conducted backward through the communication pipe 37, the second buffer elastic member 310 absorbs the remaining kinetic energy, and the buffer rod 39 pushes the valve plate 53 abutted therewith to finely adjust the valve plate 53, and further releases the impact potential energy; through the four-stage buffer release path of damping-elasticity-flow guide-buffer, the instantaneous water hammer pressure is effectively decomposed into multiple buffer behaviors, and finally the comprehensive effects of significantly reducing the pressure peak value of the valve body structure, inhibiting the rebound of water flow mutation, improving the impact resistance and dynamic stability of the system are achieved.

[0063] The working principle of the present application: the device realizes double inhibition of water hammer by integrating the spherical impeller 31, the one-way steady flow assembly 32, the ratchet limiting system and the linkage electromagnetic limiting locking structure in the water inlet body 13. The spherical impeller 31 rotates in response to water flow inertia and is rigidly connected with the inner ratchet wheel 322, cooperates with the outer ratchet wheel 321, the leaf spring element 324 and the hinged ratchet block 323 to form one-way locking; when the water flow is impacted in reverse, the ratchet block 323 is instantly clamped into the inner teeth of the outer ratchet wheel 321, and the impact is absorbed through the ratchet limiting. At the same time, the micro electric cylinder 331 drives the clamping moving block 332 to close the discharge valve port, and the magnetic attraction clamping between the sliding block 335 and the ratchet block 323 forms a mechanical auxiliary locking mechanism, and the two-stage limiting linkage ensures that the water hammer pressure is not transmitted to the main valve body structure, effectively inhibiting the reverse impact oscillation and shock rebound; the device inhibits cavitation through the "four-stage nested throttle valve cage structure", and the continuous radial contraction communication port 411 is formed along the first-stage to fourth-stage valve cage sleeve 44, and the water flow generates continuous speed increase and pressure decrease during the flow process. Each stage of the valve cage is limited in the water inlet body 13 through fastening and rotary connection, and the uniform differential pressure gradient generated by the multi-stage decreasing of the flow passage cross section reduces the generation of bubbles caused by local pressure drop, and prevents the high-frequency impact of bubble disintegration on the inner wall; the anti-blocking mechanism 5 adopts the arc-shaped filter screen 51-linkage structure of the valve plate 53 and is arranged in the filtering cavity 131 of the water inlet body 13, and the sliding protrusion 511 cooperates with the sliding groove 132 to realize installation limiting, the filter screen 51 is a quarter of a circular arc structure that fits the half of the circular arc wall surface of the filtering cavity 131, and cooperates with the valve plate 53 to rotate to control the opening and closing of the discharge passage; the anti-blocking motor 52 drives the valve plate 53 to rotate to switch the passage, and can realize the conversion of the impurity passage for discharge; at the same time, the sliding abutment between the buffer rod 39 and the discharge valve plate 53 can absorb the structural displacement response and prevent the valve plate 53 from being stuck by water impact.

[0064] It will be obvious to a person skilled in the art that the application is not limited to the details of the above-described exemplary embodiments, but that the application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. The embodiments should, therefore, be considered in all respects as illustrative and not restrictive, the scope of the application being defined by the appended claims rather than by the above description, and all changes coming within the meaning and equivalency range of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A multifunctional thermostatic balancing valve with sterilization function, characterized in that: The balancing valve includes a valve body mechanism (1), a temperature control mechanism (2), a water hammer prevention mechanism (3), an anti-cavitation mechanism (4), and an anti-blocking mechanism (5). The temperature control mechanism (2) and the valve body mechanism (1) are fastened together. The water hammer prevention mechanism (3) and the valve body mechanism (1) are fastened together. The anti-cavitation mechanism (4) and the valve body mechanism (1) are fastened together. The anti-blocking mechanism (5) and the valve body mechanism (1) are fastened together. The water hammer prevention mechanism (3) is located at the end of the valve body mechanism (1) away from the temperature control mechanism (2). The anti-blocking mechanism (5) is located between the anti-cavitation mechanism (4) and the water hammer prevention mechanism (3).

2. The multifunctional thermostatic balancing valve with sterilization function according to claim 1, characterized in that: The valve body mechanism (1) includes a balance valve body (11), a drain valve (12), a water inlet body (13), a first flow rate sensor (14), a first temperature sensor (15), and a thermoelectric actuator (16). The water inlet body (13) is connected to the balance valve body (11), and the drain valve (12) is connected to the balance valve body (11). The balance valve body (11) is provided with a constant temperature chamber (111), a thermal sterilization chamber (112), a water inlet (113), and a water outlet. The inlet (114) is connected to the inlet body (13), the anti-water hammer mechanism (3), the anti-cavitation mechanism (4) and the anti-clogging mechanism (5) are located in the inlet body (13), the temperature control mechanism (2) is located in the balance valve body (11), the inlet (113) is connected to the constant temperature chamber (111), the constant temperature chamber (111) is connected to the thermal sterilization chamber (112), the first flow rate sensor (14) and the first temperature sensor (15) are located at the outlet (114), and the thermoelectric actuator (16) is fastened to the balance valve body (11).

3. A multifunctional thermostatic balancing valve with sterilization function according to claim 2, characterized in that: The temperature control mechanism (2) includes a constant temperature control component (21) and a constant temperature thermal sterilization component (22). The constant temperature control component (21) is located in the constant temperature chamber (111), and the constant temperature thermal sterilization component (22) is located inside the constant temperature thermal sterilization component (22). The constant temperature control component (21) and the balance valve body (11) are tightly connected, and the constant temperature thermal sterilization component (22) and the balance valve body (11) are tightly connected.

4. A multifunctional thermostatic balancing valve with sterilization function according to claim 3, characterized in that: The constant temperature control assembly (21) includes a second temperature sensor (211), a second flow rate sensor (212), an adjusting piston (213), an adjusting valve core (214), a first electric actuator (215), and a first reset elastic element (216). The second temperature sensor (211) and the second flow rate sensor (212) are both securely connected to the balance valve body (11). The first electric actuator (215) and the adjusting valve core (214) are drive-connected. The adjusting piston (213) and the adjusting valve core (214) are securely connected. 213) and the balance valve body (11) abut against each other. The balance valve body (11) is provided with a bypass hole (115). The regulating valve core (214) and the balance valve body (11) are slidably connected. The bypass hole (115) is located below the regulating valve core (214). The constant temperature chamber (111) and the bypass hole (115) are connected. The bypass hole (115) and the thermal sterilization chamber (112) are connected. The first reset elastic element (216) and the regulating piston (213) are fastened together. The first reset elastic element (216) and the balance valve body (11) are fastened together.

5. A multifunctional thermostatic balancing valve with sterilization function according to claim 4, characterized in that: The constant temperature thermal sterilization component (22) includes a third temperature sensor (221), a third flow rate sensor (222), a sterilization valve core (223), a bypass piston (224), a second electric actuator (225), and a second reset elastic element (226). The third temperature sensor (221) and the third flow rate sensor (222) are both securely connected to the balance valve body (11), and the second electric actuator (225) is also securely connected to the balance valve body (11). The second electric actuator (225) and the sterilization valve core (223) are drivenly connected. The sterilization valve core (223) and the balance valve body (11) are slidably connected. The sterilization valve core (223) and the bypass piston (224) are fastened together. The bypass piston (224) and the balance valve body (11) abut against each other. The second reset elastic element (226) and the balance valve body (11) are fastened together. The bypass piston (224) and the second reset elastic element (226) are fastened together.

6. A multifunctional thermostatic balancing valve with sterilization function according to claim 5, characterized in that: The waterproof hammer mechanism (3) includes a spherical impeller (31) and a one-way flow stabilizing component (32). The spherical impeller (31) is rotatably connected to the inlet body (13). The one-way flow stabilizing component (32) is engaged with the spherical impeller (31). The one-way flow stabilizing component (32) includes an outer ratchet (321), an inner ratchet (322), a ratchet block (323), and a leaf spring (324). The spherical impeller (31) and the inner ratchet (322) are connected in series. 2) Fastening connection: the inner ratchet (322) and the water inlet body (13) are rotatably connected; the outer ratchet (321) and the water inlet body (13) are fastened; the ratchet block (323) and the inner ratchet (322) are hinged; the leaf spring (324) and the ratchet block (323) are fastened; the leaf spring (324) and the inner ratchet (322) are fastened; and the ratchet block (323) and the outer ratchet (321) are engaged.

7. A multifunctional thermostatic balancing valve with sterilization function according to claim 6, characterized in that: The anti-cavitation mechanism (4) includes a primary valve cage (41), a secondary valve cage (42), a tertiary valve cage (43), a quaternary valve cage (44), and an opening / closing motor (45). The opening / closing motor (45) is fastened to the water inlet body (13), and the opening / closing motor (45) is driven by the primary valve cage (41). The quaternary valve cage (44) is fastened to the water inlet body (13), and the tertiary valve cage (43) and quaternary valve cage (44) are fastened together. The secondary valve cage (42) and the tertiary valve cage (43) are fastened together, and the primary valve cage (41) and the secondary valve cage (42) are rotatably connected. The primary valve cage (41), the secondary valve cage (42), the tertiary valve cage (43) and the quaternary valve cage (44) are all provided with a communication port (411). The diameter of the communication port (411) decreases step by step along the primary valve cage (41), the secondary valve cage (42), the tertiary valve cage (43) and the quaternary valve cage (44).

8. A multifunctional thermostatic balancing valve with sterilization function according to claim 7, characterized in that: The anti-clogging mechanism (5) includes a filter screen (51), an anti-clogging motor (52), and a valve plate (53). The filter screen (51) and the water inlet body (13) are slidably connected. The filter screen (51) is roughly a quarter-circle arc shape. The filter screen (51) is provided with sliding protrusions (511). The valve plate (53) and the water inlet body (13) are rotatably connected. The filter screen (51) and the valve plate (53) are fastened together. The water inlet body (13) is provided with a filter chamber (131). 31) It is half-circular arc shape. The anti-clogging motor (52) and the water inlet body (13) are fastened together. The valve plate (53) and the filter chamber (131) are rotatably connected. The anti-clogging motor (52) and the valve plate (53) are driven together. The water inlet body (13) is provided with a sliding groove (132). The sliding protrusion (511) and the sliding groove (132) are slidably connected. The water inlet body (13) is provided with a cleaning water valve (133). The water inlet body (13) is provided with a discharge port (134).

9. A multifunctional thermostatic balancing valve with sterilization function according to claim 8, characterized in that: The waterproof hammer mechanism (3) further includes a linkage assembly (33), which includes a miniature electric cylinder (331), a clamping moving block (332), a valve block (333), an electromagnetic block (334), a sliding block (335), and a third reset elastic element (336). The miniature electric cylinder (331) is fastened to the water inlet body (13), the miniature electric cylinder (331) is driven to the clamping moving block (332), the valve block (333) is fastened to the clamping moving block (332), the valve block (333) is located at the discharge port (134), and the electromagnetic block (334) and the clamping moving block (336) are connected to each other. 2) Fastening connection: The electromagnetic block (334) and the sliding block (335) are driven by magnetic pole attraction. The third reset elastic element (336) and the sliding block (335) are fastened together. The third reset elastic element (336) and the electromagnetic block (334) are fastened together. The sliding block (335) is provided with an abutting inclined surface (3351). The abutting inclined surface (3351) abuts against the ratchet block (323). The sliding block (335) is provided with a locking straight surface (3352). The locking straight surface (3352) locks against the ratchet block (323). The sliding block (335) and the locking moving block (332) are slidably connected.

10. A multifunctional thermostatic balancing valve with sterilization function according to claim 9, characterized in that: The waterproof hammer mechanism (3) further includes a damper (34), a waterproof hammer piston (35), a connecting cylinder (36), a connecting pipe (37), a first buffer elastic element (38), a buffer rod (39), and a second buffer elastic element (310). The damper (34) and the waterproof hammer piston (35) are fastened together. The damper (34) and the first buffer elastic element (38) are fastened together. The first buffer elastic element (38) and the connecting cylinder (36) are fastened together. The waterproof hammer piston (35) and the connecting cylinder (36) are slidably connected together. The connecting cylinder (36) is connected to the water inlet body (13). The connecting cylinder (36) and the connecting pipe (37) are connected together. The second buffer elastic element (310) and the buffer rod (39) are fastened together. The second buffer elastic element (310) and the connecting pipe (37) are fastened together. The buffer rod (39) abuts against the valve plate (53). The buffer rod (39) and the connecting pipe (37) are slidably connected together.

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