CN116697112A

CN116697112A - Multifunctional control valve for water pump

Info

Publication number: CN116697112A
Application number: CN202310577326.XA
Authority: CN
Inventors: 陈佳妮
Original assignee: Wenling Huanli Electric Appliance Co ltd
Current assignee: Wenling Huanli Electric Appliance Co ltd
Priority date: 2023-05-22
Filing date: 2023-05-22
Publication date: 2023-09-05

Abstract

The invention relates to the technical field of valves, in particular to a multifunctional control valve for a water pump, which comprises a valve body, an upper pump cover, a main shaft, a valve seat, a valve mechanism, a movable mechanism and a buffer mechanism, wherein the valve body is provided with a valve seat; the valve body is arranged in a pipeline for transporting liquid; the sealing element is fixedly arranged inside the valve body; the main shaft element is fixedly arranged in the valve body through the sealing element; the valve seat is fixedly arranged in the valve body; the movable mechanism passes through the main shaft element and is arranged on the valve mechanism, and the movable mechanism can rotate and ascend along the main shaft element by means of water flow when the water pump is started, so that the movable mechanism can be matched with the buffer mechanism, the descending speed is slowed down, and the water hammer effect is reduced; the buffer mechanism passes through the main shaft element and is fixedly arranged at the lower end of the sealing element; according to the invention, the movable mechanism and the buffer mechanism are arranged, and the buffer mechanism slows down the falling speed of the valve mechanism, so that the water hammer phenomenon can be effectively reduced.

Description

Multifunctional control valve for water pump

Technical Field

The invention relates to the technical field of valves, in particular to a multifunctional control valve for a water pump.

Background

The control valve consists of a main valve and a connecting pipe system, and the novel multifunctional control valve integrates the functions of a gate valve, a check valve and a water hammer eliminator, is a valve body used in a water supply system of a high-rise building, is generally arranged on an outlet pipeline of a water pump, and is used for preventing and weakening water hammer impact of a pipeline when the water pump is started and stopped, preventing water from flowing backwards, protecting the water pump and maintaining the pipeline safety. In order to realize the automation of the operation of the water pump, simplify the management, lighten the labor and improve the reliability, the hydraulic valve and the electric valve replace the manual valve by people, and the single valve is subjected to a plurality of technical improvements, so that a novel valve is a multifunctional control valve.

In the use process of the existing multifunctional control valve for the water pump for the water supply system of the high-rise building, the flow and the pressure are suddenly reduced at the moment of stopping the pump of the water supply system, the main valve plate starts to slide downwards under the action of gravity, and the impact force generated suddenly by water in a pipeline causes the pipeline or a container carrying the water to flow to generate sound and vibration, namely, the water hammer phenomenon. The water hammer phenomenon is a phenomenon that working medium is generated under the condition that the flow of a pipeline is not smooth, so that a huge sound and strong vibration are generated, and even serious damage to equipment is caused.

For this reason, the prior art provides some solutions, for example, chinese patent application publication No. CN201710901946.9 discloses a multifunctional water pump control valve for pond sewage, the device includes a sludge filtering tank, a water inlet pipe is fixedly connected to one side of the top of the sludge filtering tank, a solid filtering head is installed at one end of the water inlet pipe through threads, a conical filtering tank is fixedly arranged at the bottom of the sludge filtering tank, a sediment tank is fixedly connected to the bottom of the conical filtering tank, a sediment pipe is fixedly connected to one side of the sediment tank, the sediment tank is communicated with the interior of the sediment pipe, a rotary water suction pipe is fixedly inserted to the top of the sludge filtering tank, a sediment filtering head is installed at the bottom of the rotary water suction pipe, and a rotating shaft is fixedly installed at the top of the rotary water suction pipe. In the use process of the device, the water hammer phenomenon caused by sudden change of water flow can occur at the moment of switching the valve, the device can be damaged, and the service life is reduced.

In view of the above, in order to overcome the above technical problems, the present invention provides a multifunctional control valve for a water pump, which solves the above technical problems.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: the water hammer phenomenon caused by the rapid closing of the valve can cause a certain harm to the control valve for the multifunctional water pump, affect the use of the water supply system and even damage devices in the water supply system.

In order to achieve the above object, the present invention provides the following technical solutions:

the invention provides a multifunctional control valve for a water pump, which comprises a valve body, an upper pump cover, a main shaft, a valve seat, a valve mechanism, a movable mechanism and a buffer mechanism, wherein the valve body is arranged on the upper pump cover; the valve body is arranged in a pipeline for transporting liquid, two ends of the valve body are fixedly connected to a water outlet pipeline of the water pump, and the valve body and the pipeline are in flange connection; the upper pump cover is fixedly arranged inside the valve body and is used for sealing the valve body; the main shaft penetrates through the upper pump cover and is fixedly arranged in the valve body, and the main shaft is used for installing the buffer mechanism and the movable mechanism; the valve seat is fixedly arranged in the valve body and is used for supporting the movable mechanism; the valve mechanism is fixedly arranged on the valve seat, the valve mechanism is controlled by the movable mechanism, and the movable mechanism drives the valve mechanism to ascend so as to realize quick opening of the control valve; the movable mechanism passes through the main shaft and is arranged on the valve mechanism, and the movable mechanism realizes the rotary lifting along the main shaft by means of water flow when the water pump is started, so that the movable mechanism is matched with the buffer mechanism, and the descending speed is slowed down and the water hammer effect is reduced when the water pump is closed; the buffer mechanism penetrates through the main shaft and is fixedly arranged at the lower end of the upper pump cover, the buffer mechanism is used for being matched and fixed with the movable mechanism when the water pump is started to limit the position of the movable mechanism, and the buffer mechanism enables the movable mechanism to slow down the descending speed when the water pump is closed, so that the water hammer effect is reduced.

In the operation process of the control valve, the valve is the most important ring, and the quality of the valve determines whether the control valve can realize the complete blocking of the water flow during the working process so as to ensure that the water flow cannot overflow in the pipeline. The valve mechanism comprises a sealing plate, a pressing plate, a main valve, a spiral blade and a shaft sleeve; the main valve is matched with the valve seat, the pressing plate and the main valve are fixedly connected through bolts, the sealing plate is fixedly arranged at the upper end of the main valve, the mounting mode is laser welding or flame welding, the sealing plate is used for preventing leakage and foreign matter invasion, the shaft sleeve is used for reducing friction generated during rotation between the valve mechanism and the main shaft, the shaft sleeve is made of fluororubber, and the fluororubber has excellent corrosion resistance and wear resistance and can be used in extreme temperature and chemical environment; the friction resistance is very good, and the valve mechanism is suitable for high-speed friction and high-temperature friction, so that the valve mechanism is prevented from being in direct contact with the main shaft.

The valve is usually controlled manually and electronically, and the invention provides a new idea that the movable mechanism is driven to ascend by the high pressure when the water pump is started, so that a traditional switching system is abandoned, and redundant mechanisms are avoided. The movable mechanism comprises a control board, claw-shaped elements, a reset spring, a fixed block and a fixed bolt, wherein the claw-shaped elements are made of 321 stainless steel, and the 321 stainless steel has good corrosion resistance and high-strength physical properties and good plasticity; the reset spring can be made of spring steel, can meet the requirement of repeated use, has lower requirement on use environment, and can be used for multiple times in a wet environment without rusting; the fixed block is made of stainless steel 316, and the installation mode is set to gas shield welding and argon arc welding; the fixed bolt is arranged on the control panel in a braze welding mode, and the claw-shaped element can move around the fixed bolt; when the movable mechanism rotates, the claw-shaped element can be acted by centrifugal force, the elastic force of the return spring is overcome to be used as displacement on the outer side of the movable mechanism, and the claw-shaped element is clamped into the key cap, so that the claw-shaped element is locked, and the movable mechanism and the buffer mechanism are locked relatively.

Furthermore, a through hole is formed in the middle of the main valve and is used for being matched with the main shaft, a through hole is formed in an annular array outside the through hole of the main valve, an annular hexagonal reinforcing rod is arranged in the annular array of the main valve, and the annular array can be used for processing the main valve in an omnibearing manner from the periphery of the main valve, so that the durability of the main valve is enhanced, and the use strength is ensured; the annular hexagonal reinforcing rod is used for reinforcing the main body structure of the main valve, so that the main valve can be used for a long time in a high-pressure use environment, and the use strength and the service life are ensured; the main valve is provided with an annular protruding block, the lower end face of the main valve is provided with an annular groove, the annular groove is used for installing the spiral blade, when water flows through the annular groove, water flows on two sides of the spiral blade are different, so that the main valve is driven to move upwards by rotation of the spiral blade, and centrifugal force is generated, so that the movable mechanism can be clamped and locked with the buffer mechanism; the main valve is made of silicon bronze; the annular hexagonal reinforcing rods arranged on the main valve can effectively strengthen the structural strength of the main valve, and through holes are formed in the outer annular array of the through holes of the main valve; when the water pump is closed, the main valve is fixed on the valve seat, water flow can flow through the through holes, and the sum of the areas of all the through holes is 10% of the cross section area of the main valve; when the main valve is closed, 90% of flow is reduced immediately, and then the main valve is completely closed, so that the water hammer effect can be effectively reduced.

For the helical blade, the fixed-distance type helical blade is determined to be arranged, the fixed-distance type helical blade has the advantages of simpler structure, lighter texture, low manufacturing cost and simple later maintenance, and has great application in a low-power scene; the spiral blade is arranged in a lancet shape, the Bernoulli principle is adopted to know that one flow rate with high pressure in fluid mechanics is low, and the other flow rate with low pressure is high, so that the lancet shape can realize that pressures on two sides are inconsistent and rapid, power for upward movement is generated by utilizing different water pressures, and the lancet shape can be converted into power potential energy of the main valve to drive the main valve to move upward by utilizing potential energy of water flow as much as possible in the environment with high water pressure and high flow rate inside the control valve.

Analysis of the number of helical blades: the number of the blades of the spiral blade is set to be 10, so that the spiral blade can obtain enough power, the main valve can rise against gravity, the solidity of the spiral blade is 0.4, the solidity is an important parameter for measuring the power output of the spiral blade, the solidity of 0.4 can effectively obtain larger power in the environment of the control valve, the diameter of the spiral blade is set to be 8-12 cm, the diameter of the spiral blade is very large and depends on the size of the main valve, and the spiral blade can obtain the largest lifting force as large as possible, so that the theoretical maximum power is obtained; the screw pitch of the helical blade is set to be 10-15 cm, and the screw pitch is set for the sufficient inflow of water flows at two sides, so that the stable power output provided by the helical blade is ensured, the diameter of the helical blade is at least not less than 0.9 time and at most not more than 1.5 times, and the stability of the output power can be ensured while larger power can be obtained in the interval; the spiral blade material is made of glass fiber reinforced polymer, the glass fiber reinforced polymer is light, the physical strength is good, on one hand, the dead weight is reduced, and the larger power output is used for the main valve, on the other hand, the spiral blade material is not easy to deform under high-strength water flow flushing, and can stably finish rotation; the spiral blades are designed into streamline curved surfaces and are designed into streamline curved surfaces, when the water pump works, the water flow below the main valve is increased, and at the moment, water flows pass through the two sides of the spiral blades; the different shapes of the two sides can lead to different water flow rates of the two sides, so that thrust is generated to push the main valve to rise, the movable mechanism is arranged on the main valve, and the main valve drives the movable mechanism to rise.

The lower part of the main shaft is provided with a spiral groove which can be matched with a spiral lug of the control board; the groove is used for being matched with the spiral convex block on the control board, when the control board falls down, the gravity applied to the control board is decomposed into two forces of downward movement and movement along the groove when the control board contacts the groove, and in this case, the control board can rotate anticlockwise along the groove lines, so that the movable mechanism is separated from the buffer mechanism, and the buffer mechanism is reset under the action of the elastic force of the reset spring; meanwhile, due to the design of the spiral groove, the gravity of the control panel is decomposed, the descending speed of the control panel is slowed down, the speed is further reduced, and the slow closing effect of the movable mechanism is further realized. The grooves of the control panel are provided with coating treatment, the coating material can be ceramic coating, the coating material is silicon nitride and aluminum oxide, the hardness, the abrasion resistance and the corrosion resistance of the grooves can be improved, meanwhile, the whole control panel is not subjected to material replacement, and only the parts easy to wear are subjected to coating treatment, so that the manufacturing cost is saved, and the waste of materials is reduced.

In the closing process of the control valve, the valve is required to be buffered to avoid the rapid closing of the valve so as to generate a water hammer effect, the buffer mechanism comprises a buffer spring, a connecting block and a key cap, the buffer spring is fixedly arranged at the lower end of the upper pump cover, the installation mode is set into an integrated brazing mode and an argon arc welding mode, the connecting block is fixedly arranged at the lower end of the buffer spring, the installation mode is set into an integrated brazing mode and an argon arc welding mode, the buffer spring, the connecting block and the upper pump cover are required to be fixed, the welding is required to be firm, and the integrated brazing mode can well meet the requirements in the prior art, but has higher cost and needs an independent die and a clamp; if the production capacity is less in actual production, argon arc welding can be used for replacing the production capacity, and the use requirement can be basically met; the key cap is fixedly arranged on the lower end face of the connecting block in a bonding and brazing mode; the buffer springs are arranged in 3-4, the buffer springs are in a circumferential array, and the 3-4 buffer springs further strengthen stability, increase the buffer capacity of the buffer springs in multiple dimensions and are beneficial to the stable falling of the buffer mechanism; the buffer spring can stretch under the action of gravity of the movable mechanism, and the stretching distance is larger than the distance between the thread-shaped groove arranged on the main shaft and the connecting block, so that downward movement displacement is driven by the movable mechanism to meet the use condition, and the main shaft and the movable mechanism are matched.

The key cap is internally provided with the groove for locking the claw-shaped element, and the groove is internally provided with the arc-shaped protruding block for limiting the position of the claw-shaped element, so that the arc-shaped protruding block can be matched with the arc-shaped groove on the claw-shaped element for further locking, friction force can be reduced, the matching clamping effect of the claw-shaped element and the key cap can be ensured, and the use effect is ensured; the key cap is made of silicon carbide, the silicon carbide is a high-strength corrosion-resistant material, and when the key cap and the claw-shaped element are locked in a matched manner, phenomena such as collision, extrusion and friction can be avoided inevitably, and the high-strength material is selected to be beneficial to normal operation and ensure the service life; the claw-shaped element overcomes the elastic force of the reset spring and outwards displaces and is locked with the key cap, so that the movable mechanism is fixed relative to the buffer, at the moment, the movable mechanism and the buffer mechanism are a main body, and when the movable mechanism descends, the buffer mechanism is driven to descend together.

Under the use environment of this kind of humidity to the water pump control valve, buffer spring surface need carry out the processing technology of thermal treatment and sandblast, through thermal treatment, can make the structure of material more compact, the grain is finer to improve the intensity and the hardness of material, buffer spring's operational environment is comparatively abominable, is in moist environment for a long time, and the inside high-pressure rivers of control valve can strike its structure, if not carry out the processing of sandblast to it, buffer spring's surface is broken under the effect of high-pressure rivers very easily, can flow into rivers even, causes harm to water supply system.

The beneficial effects of the invention are as follows:

1. according to the invention, the movable mechanism and the buffer mechanism are arranged, so that the control valve is divided into two parts in the closing process, namely, most valves are closed firstly, so that most water flow stops passing through the valve to realize the effect of quick valve closing, then the movable mechanism is slowly dropped as far as possible under the delayed closing of the buffer mechanism, and the control panel is slowly closed under the cooperation of the buffer mechanism, so that the water hammer phenomenon is effectively reduced, and the safety and stability of equipment are ensured.

2. According to the invention, the spiral blades are arranged, and the main valve is driven to rotate and rise by utilizing the thrust generated by different flow rates at two sides of the spiral blades, so that the movable mechanism obtains centrifugal force, the claw-shaped element and the key cap are locked and blocked, and the stability of the control valve in the working process is enhanced; when the control valve is closed, the movable mechanism and the buffer mechanism are fixed, and the buffer mechanism delays the falling time of the locking mechanism, so that the falling time of the movable mechanism and the main valve is different, and the purpose of reducing the water hammer phenomenon is realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will briefly explain the drawings needed in the embodiments or the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the overall structure of the present invention;

FIG. 3 is a schematic view of a valve mechanism of the present invention;

FIG. 4 is a schematic view of the articulating mechanism of the present invention;

FIG. 5 is a schematic view of a main valve of the present invention;

FIG. 6 is a schematic view of the position of a helical blade in accordance with the present invention;

FIG. 7 is a schematic view of the direction of water flow on both sides of the helical blade of the present invention in operation;

FIG. 8 is a schematic diagram of the spindle and control board cooperation of the present invention;

FIG. 9 is a schematic view of the position of the cushioning mechanism of the present invention;

FIG. 10 is a block diagram of a cushioning mechanism of the present invention;

FIG. 11 is a schematic view of a claw member of the invention;

fig. 12 is a cross-sectional view of a key cap of the present invention.

In the figure: 1. a pump cover is arranged; 2. a main shaft; 3. a valve seat; 4. a movable mechanism; 41. a control board; 42. a claw-shaped member; 43. a return spring; 44. a fixed block; 45. a fixing bolt; 46. circular arc grooves; 5. a buffer mechanism; 51. a buffer spring; 52. a connecting block; 53. a key cap; 54. arc-shaped protruding blocks; 6. a valve mechanism; 61. a sealing plate; 62. a pressing plate; 63. a main valve; 64. a helical blade; 65. a shaft sleeve; 66. annular hexagonal reinforcing rods; 67. a slow flow hole; 68. an annular groove; 69. spiral grooves.

Detailed Description

In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

Example 1: as shown in fig. 1 and 2, a multifunctional control valve for a water pump comprises a valve body, an upper pump cover 1, a main shaft 2, a valve seat 3, a valve mechanism 6, a movable mechanism 4 and a buffer mechanism 5; the valve body is usually arranged in a water taking, water supplying, pressurizing, diving, sewage pump house and petroleum and chemical fluid conveying system in the fields of municipal administration, building, iron and steel, metallurgy, petroleum, chemical industry, water conservancy and irrigation, and the like, two ends of the valve body are fixedly connected in a water pump water outlet pipeline, the valve body and the pipeline are in flange connection, an upper pump cover 1 is fixedly arranged in the valve body, the installation mode is bolt installation, the upper pump cover 1 is used for sealing the valve body, a main shaft 2 passes through the upper pump cover 1 and is fixedly arranged in the valve body, the installation mode is vacuum brazing, and the main shaft 2 is used for installing a buffer mechanism 5 and a movable mechanism 4; the valve mechanism 6 is fixedly arranged on the valve seat 3 in a laser brazing mode, the valve mechanism 6 is used for controlling water flow and rapidly opening, 90% of the flow is rapidly closed, and the rest 10% of the flow is slowly closed to prevent backflow, so that unidirectional control is realized; the buffer mechanism 5 passes through main shaft 2 fixed mounting and is covered 1 lower extreme at the upper pump, the mounting means sets up to bond, buffer mechanism 5 is used for the water pump to open time and movable mechanism 4 cooperation is fixed, restrict movable mechanism 4's position, when the water pump is closed, buffer mechanism 5 makes movable mechanism 4 slow down the decline speed, thereby reduce the water hammer effect, disk seat 3 fixed mounting is at the valve body, the mounting means sets up to braze, disk seat 3 is used for supporting movable mechanism 4, movable mechanism 4 passes main shaft 2 and installs on disk seat 3, movable mechanism 4 can be with the help of rivers when the water pump is opened, realize rising along main shaft 2 rotation, thereby movable mechanism 4 can buffer mechanism 5 cooperation, slow down the decline speed when closing the water pump, reduce the water hammer effect.

After the valve body is installed, water needs to be added for the first time, at the moment, a worker starts a water pump in a pipeline, the valve mechanism 6 receives pressure caused by water flow below, and when the pressure is greater than the gravity of the valve mechanism 6, the valve mechanism 6 can be separated from the valve seat 3 under the action of water pressure to carry the movable mechanism 4 to rotate upwards; when the movable mechanism 4 contacts the buffer mechanism 5, the movable mechanism 4 stops moving; at this time, the water flow reaches the maximum, when the water pump is closed, the valve mechanism 6 is quickly fallen and closed, the movable mechanism 4 drives the buffer mechanism 5 to move downwards to a certain position, the buffer mechanism 5 is separated, the movable mechanism 4 is contacted with the valve seat 3, and the control valve is completely closed.

The valve mechanism 6 realizes graded falling, and a plurality of through holes are reserved when most water flows are blocked rapidly, so that a part of water flows can continue to circulate, and the buffer mechanism 5 can buffer the falling of the movable mechanism 4, so that the graded falling of the valve mechanism 6 is realized, and the water hammer effect is reduced to a great extent; the safety and reliability are high, the actions are completely interlocked, and no misoperation is generated; when the water pump is started and stopped, the pressure change of the medium before and after the valve is skillfully utilized to control the power without operation control, so that the valve acts according to the requirement of an operation rule; the valve action is not influenced by the pump lift and flow change without professional debugging, the application range is wide, maintenance is basically not needed, and the service life is long.

As shown in fig. 3, the main valve 63 is mounted on the main shaft 2, the main valve 63 is provided with an annular hexagonal reinforcing rod 66 for reinforcing a mechanical structure so as to ensure a service life, the main valve 63 can rotate around the main shaft 2, the helical blade 64 is fixedly mounted at the lower end of the main valve 63, the mounting mode is set to be oxygen-free soldering, the sealing plate 61 is fixedly mounted at the upper end of the main valve 63, the mounting mode is set to be bolt-mounted, the pressing plate 62 is fixedly mounted at the upper end of the sealing plate 61, the mounting mode is set to be bolt-mounted, the movable mechanism 4 is mounted at the upper end of the pressing plate 62, and the shaft sleeve 65 is fixedly mounted between the main shaft 2 and the main valve 63.

In the state of stopping the pump, the main valve 63 and the connecting block 52 are matched and fixed with the valve seat 3 under the action of self gravity, and the whole movable mechanism 4 is completely closed; when the water pump is started, the water pressure at the water inlet end reaches more than 50% of the nominal pressure, the valve mechanism 6 is pushed to drive the movable mechanism 4 upwards, and the movable mechanism 4 is fixed on the main shaft 2 to perform upward displacement; in the working process, the water pump is started, the main valve 63 is pressed by the water flow below to push the sealing plate 61 and the movable mechanism 4 upwards, the spiral blades 64 can rotate upwards in the water flow, so that the main valve 63 is driven to rotate upwards, and the claw-shaped element 42 on the movable mechanism 4 is displaced outwards by centrifugal force; when the water pump is turned off, the main valve 63 falls down along the main shaft 2 under the action of gravity, and the movable mechanism 4 falls down slowly under the elastic force of the buffer mechanism 5. The pressing plate 62 is used for enhancing the strength of the movable mechanism 4, reducing the requirement on the use environment, and the sealing plate 61 can realize sealing in the valve closing state, so that water above cannot flow back through the movable mechanism 4, and the effect of the check valve is realized; the main valve 63 can quickly reduce most of water flow, and then realize slow and complete closing, so that the water hammer effect can be effectively avoided.

As shown in fig. 4, the movable mechanism 4 includes a control board 41, a claw-shaped element 42, a return spring 43, a fixed block 44 and a fixing bolt 45, wherein a through hole is formed in the center of the control board 41, the through hole is used for being installed in cooperation with the spindle 2, the radius of the through hole is 4cm, that is, the through hole is consistent with that of the spindle 2, a spiral projection is arranged at the through hole of the control board 41, the control board 41 is rotatably installed on the main valve 63, the fixing bolt 45 is fixedly installed on the control board 41 in an annular array, the installation mode can be welding or bonding, the claw-shaped element 42 is provided with the through hole, the claw-shaped element 42 is used for fixedly installing the fixing bolt 45, the fixed block 44 is fixedly installed on the control board 41, the installation mode is welding, one end of the return spring 43 is fixedly installed on the fixed block 44, the other end of the return spring 43 is fixedly connected on the claw-shaped element 42, the installation mode is bonding, the return spring 43 can be provided as a spring, and the return spring 43 can be manufactured as spring steel.

The claw-shaped element 42 can generate an outward displacement trend under the action of centrifugal force in the rotating process, and can only rotate around the fixed bolt 45 under the fixing action of the fixed bolt 45, so that the movable mechanism 4 is driven to displace outwards, the movable mechanism 4 can generate an inward elastic force due to deformation, and when the rotating speed reaches a certain value, the claw-shaped element 42 can be locked with the key cap 53, so that the movable mechanism 4 and the buffer mechanism 5 are relatively fixed.

The movable mechanism 4 utilizes the centrifugal force applied to an object during rotation to lock and clamp the buffer mechanism 5, and the claw-shaped element 42 can be limited to swing outwards only through the cooperation of the reset spring 43, the fixed block 44 and the fixed bolt 45, so that the buffer mechanism 5 can be matched to complete locking and clamping.

As shown in fig. 5 and 6, the spiral vane 64 is annularly arranged in the annular groove 68 on the lower end surface of the main valve 63, one end of the spiral vane 64 is fixedly arranged on the main valve 63, and the installation mode can be braze welding; the fixed-distance type structure is simpler, the texture is lighter, the manufacturing cost is low, the later maintenance is simple, and the fixed-distance type structure has great application in a low-power scene; the number of blades of the helical blade 64 is 10, and it can be considered that the tension coefficient and the power coefficient of the helical blade 64 are proportional to the number of blades, the solidity of the helical blade 64 is 0.4, the solidity is the ratio of the area of the blade to the rotating area of the helical blade 64, the influence of the solidity is similar to that of the number of blades, the tension coefficient and the power coefficient are increased along with the increase of the solidity, but the solidity is not larger and better, which is determined according to the rotation speed and the airspeed, the larger the solidity of the helical blade 64 is, the larger the water facing area is, the water flow viscosity can reduce the efficiency, the solidity of 0.4 can well meet the working requirement, the water facing area is ensured, the water flow viscosity effect is also ensured to be smaller, and the rotation of the helical blade 64 is not excessively disturbed,

the diameter of the helical blade 64 was set to 8cm; the diameter of the helical blade 64 is largely determined by the size of the slot of the annular groove 68 of the main valve 63, and in the opposite space, the diameter of the helical blade 64 should be ensured to be as large as possible, so that the lifting force obtained by the helical blade 64 from the water flow is sufficiently large, the valve opening time is reduced, and the working efficiency is improved.

In the working process, when the lower part of the main valve 63 is continuously impacted by the acting force of water flow, the spiral blade 64 generates upward thrust and clockwise rotating force, and the spiral blade 64 drives the main valve 63 to rotate and rise due to the fact that the spiral blade 64 and the main valve 63 are fixedly connected through welding.

As shown in fig. 7, when water passes through the spiral blade 64, since the spiral blade 64 is designed in a streamline curved shape, the upper end of the spiral blade 64 is designed to be flat, and the lower end is designed to be convex, so that the water flow rate at two sides of the spiral blade 64 is different; in the working process, the water flow continuously impacts the helical blade 64, so that the two sides of the blade of the helical blade 64 are subjected to unbalanced force, and a downward thrust force for anticlockwise rotation is generated, so that the whole movable mechanism 4 is pushed to rotate and ascend on the main shaft 2 clockwise.

As shown in fig. 8, the lower part of the main shaft 2 is provided with a spiral groove 69 which can be matched with the spiral convex block of the control plate 41; the spiral groove 69 is designed to achieve that when the movable mechanism 4 is lowered by gravity, the gravity is contacted with the groove, and is decomposed into forces in two directions, so that the movable mechanism 4 moves along the direction of the groove, the diameter of the thread is consistent with that of the main shaft 2, the height of the groove is not designed to be too long, the closing process time is too long, the possibility that the movable mechanism 4 is blocked in the groove is increased, the stability of the mechanism is damaged,

the grooves are formed in a coating mode, silicon carbide can be used as a coating material, the hardness, abrasion resistance and corrosion resistance of the material can be improved through the silicon carbide coating, the control board 41 needs to be matched with the main shaft 2 once every time when the valve is opened and closed, friction force can cause certain damage to the control board 41, if the material is formed by common materials, the shape and the structure can be changed, the service life is short, the mechanism is invalid, and if the material is replaced by high-strength materials, the cost is high, and the material is wasted; therefore, the friction part is coated, so that on one hand, the structural strength is enhanced, on the other hand, the material is saved, and the cost can be controlled under the condition of meeting the use requirement.

In the working process, when the water pump is closed, the water pressure below the control panel 41 is reduced, the control panel 41 is lowered under the action of gravity, at the moment, the control panel 41 is connected with the buffer mechanism 5, the buffer spring 51 in the buffer mechanism 5 slows down the lowering speed of the control panel 41, when the through hole of the control panel 41 is contacted with the spiral convex block of the main shaft 2, the downward movement is converted into the downward rotation under the action of gravity, and the control panel 41 is also lowered in the anticlockwise rotation due to the anticlockwise rotation of the threaded design, at the moment, the claw-shaped element 42 can be separated from the key cap 53 to reset under the action of the reset spring 43, so that the separation of the control panel 41 and the buffer mechanism 5 is realized, and the buffer mechanism 5 is reset under the action of the buffer spring 51.

As shown in fig. 9, 10 and 11, the buffer mechanism 5 comprises a buffer spring 51, a connecting block 52 and a key cap 53, wherein the buffer spring 51 is fixedly arranged at the lower end of the upper pump cover 1, the installation mode can be set to be adhesive, the buffer spring 51 can be made of cobalt-chromium-molybdenum alloy steel, the cobalt-chromium-molybdenum alloy steel has excellent corrosion resistance, the cobalt-chromium-molybdenum alloy steel has good processability, and the cobalt-chromium-molybdenum alloy steel has high strength and rigidity and can bear a working environment with high strength and high stress; the connecting block 52 is fixedly arranged at the lower end of the buffer spring 51, the installation mode can be set to be adhesive, the key cap 53 is fixedly arranged at the lower end surface of the connecting block 52, and the installation mode is set to be adhesive; the key cap 53 is provided with an arc-shaped groove 46 toward the inside for locking the claw member 42.

When the water pump is started, the movable mechanism 4 is driven by the helical blade 64 to rotate, so that the claw-shaped element 42 obtains centrifugal force to displace outwards, the distance from the key cap 53 to the center of the main shaft 2 is 4mm larger than the distance from the claw-shaped element 42 to the center of the main shaft 2, when the rotating speed of the movable mechanism 4 is larger than 2r/s, the movable mechanism 4 overcomes the displacement of the reset spring 43 to displace outwards by 4mm, and at the moment, the claw-shaped element 42 and the key cap 53 are locked; when the water pump is closed, the main valve 63 rapidly descends under the action of gravity to prevent most of water flow in time, and at the moment, the annular array slow flow holes 67 on the main valve 63 can still allow a small part of water flow to pass through, so that the water hammer phenomenon is reduced; the movable mechanism 4 descends, and the pulling force of the buffer mechanism 5 is slower than that of the main valve 63.

The buffer mechanism 5 cooperates with the movable mechanism 4 to realize the graded falling of the valve mechanism 6, and the elastic force of the buffer spring 51 is utilized to reset, so that the impact on the next use is avoided after each use, the water hammer effect can be effectively reduced, and the safety of equipment is protected; the buffer springs 51 can be set to 4, and four buffer springs 51 are in a circumferential array, and the stability of the buffer mechanism 5 can be further enhanced by setting 4 buffer springs 51, so that the falling process is more stable.

As shown in fig. 10 and 12, the material of the key cap 53 is made of silicon carbide, which is lighter than many metal materials; is a very hard material, the hardness of which can reach 9.5 grade on the Mohs scale and is much harder than the traditional materials such as steel and the like; the silicon carbide has very good thermal stability, can keep the mechanical property and chemical stability in a high-temperature environment, and has a melting point of about 2700 ℃; silicon carbide has good corrosion resistance and can resist corrosion of a plurality of acids and alkali; in the working process, the movable mechanism 4 is pushed upwards by the rotation of the main valve 63, the claw-shaped element 42 on the movable mechanism 4 is outwards subjected to centrifugal force, and when the rotating speed of the movable mechanism 4 reaches a fixed value, the outward displacement of the claw-shaped element 42 is enough to contact with the key cap 53, so that locking and clamping are realized; after the water pump is turned off, the key cap 53 limits the displacement trend of the claw-shaped element 42, so that the elastic force of the movable mechanism 4 is buffered in the falling process of the movable mechanism 4, and the effect of avoiding the action of water hammer is achieved.

Example 2: the number of blades of the helical blade 64 may be set to 8, and the solidity to 0.35; the number of the paddles is in direct proportion to the power of the paddles, the solidity is in inverse proportion to the power, and the original same effect can be achieved by reducing the number of the paddles and the solidity at the same time; the helical blade 64 is powered substantially the same in both embodiments when subjected to a certain water pressure; fewer paddles may reduce cost and probability of damage, but less solidity may result in easy blockage of the helical blades 64; therefore, in the pipeline for supplying water to the urban high-rise building, the number of the paddles and the solidity can be set to be smaller, because the supply impurities of the tap water are usually less, a tap water plant can clean and filter in advance, and the cost investment can be reduced; in sewage treatment plants or pipelines for petroleum transportation, it is recommended to set a larger number of paddles and a larger solidity, such helical blades 64 are not easy to be blocked, the output continuity is better, and the service life is longer.

In the working process, a worker installs the valve body in the middle of a pipeline and sets the valve body to be in flange connection; for the first time, water diversion is needed to be added into the pipeline, and the device can be prevented from idling by adding the water diversion; the water pump is started by a worker, the valve mechanism 6 is stressed, and when the pressure reaches a set value, the valve mechanism 6 is separated from the valve seat 3 to move upwards; at this time, the spiral blade 64 is impacted by water flow to drive the movable mechanism 4 to rotate; when the movable mechanism 4 on the connecting block 52 contacts the buffer mechanism 5, the movable mechanism 4 stops moving; at this time, the claw-shaped element 42 is subjected to centrifugal force so that the claw-shaped element 42 overcomes the elastic force of the return spring 43 to displace outwards, when the displacement reaches a certain degree, the claw-shaped element 42 is contacted with the key cap 53, and the circular arc-shaped protruding block 54 and the circular arc-shaped groove 46 are matched, so that the movable mechanism 4 is locked and blocked; the staff turns off the water pump, at this moment the gravity of the movable mechanism 4 is greater than the pressure, the movable mechanism 4 drops onto the valve seat 3, the slow flow through hole 67 opened on the main valve 63 can let a small part of water flow pass through continuously, reduce the water hammer effect; the movable mechanism 4 moves slowly downward against the elastic force of the buffer spring 51, and when the movable mechanism 4 contacts the spiral groove 69 on the spindle 2, the movable mechanism 4 starts to rotate, so that the claw member 42 and the key cap 53 are disengaged, and the movable mechanism 4 falls onto the main valve 63, at which time the control valve is completely closed.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The multifunctional control valve for the water pump comprises a valve body, an upper pump cover (1), a main shaft (2) and a valve seat (3), and is characterized in that the valve body is arranged in a pipeline for transporting liquid, two ends of the valve body are fixedly connected to the water outlet pipeline of the water pump, and the valve body is connected with the pipeline by adopting a flange; the upper pump cover (1) is fixedly arranged in the valve body and used for sealing the valve body; the main shaft (2) is fixedly arranged in the valve body through the upper pump cover (1), and a buffer mechanism (5) and a movable mechanism (4) are arranged on the main shaft (2); the buffer mechanism (5) is used for realizing clamping limit on centrifugal force caused by rotation of the movable mechanism (4) by water flowing in the water pump when the claw-shaped clamping mechanism is started, so that the movable mechanism (4) can overcome the elasticity of the buffer mechanism (5) to drive the movable mechanism (4) to slowly descend under the action of gravity when the water pump is closed, thereby playing a role of reducing water hammer and prolonging the service life of the water pump; the valve seat (3) is fixedly arranged inside the valve body, and the valve seat (3) is used for supporting the movable mechanism (4); a valve mechanism (6) is fixedly arranged on the valve seat (3), the valve mechanism (6) is controlled by the movable mechanism (4), and the movable mechanism (4) drives the valve mechanism (6) to ascend so as to realize quick opening of the control valve; the movable mechanism (4) passes through the main shaft (2) and is arranged on the valve mechanism (6), the movable mechanism (4) rises along the main shaft (2) in a rotating way, so that the movable mechanism (4) is matched with the buffer mechanism (5), and the descending speed of the valve mechanism (6) is slowed down through the matching of the movable mechanism (4) and the buffer mechanism (5), so that the water hammer effect is reduced; the buffer mechanism (5) penetrates through the main shaft (2) and is fixedly arranged at the lower end of the upper pump cover (1).

2. The multifunctional control valve for a water pump according to claim 1, wherein: the movable mechanism (4) comprises a control plate (41), claw-shaped elements (42), a reset spring (43), a fixed block (44) and a fixed bolt (45), wherein a through hole is formed in the center of the control plate (41), a spiral protruding block is arranged at the through hole of the control plate (41), the control plate (41) is rotatably installed on a main valve (63) and can be in rotary connection and separation with the main valve (63), the fixed bolt (45) is fixedly installed on the control plate (41) in an annular array mode and used for realizing that the claw-shaped elements (42) are rotated by a certain angle in the working process, a circular arc-shaped groove (46) is formed in the claw-shaped elements (42), a through hole is formed in the claw-shaped elements (42), the claw-shaped elements (42) are fixedly installed on the fixed bolt (45) through the through hole, the fixed block (44) is fixedly installed on the control plate (41) to realize the limiting function of the reset spring (43), one end of the reset spring (43) is fixedly installed on the fixed block (44), and the other end of the reset spring (43) is fixedly installed on the fixed block (44) and the other end of the reset spring is fixedly connected with the claw-shaped elements (42) to overcome the claw-shaped elements.

3. The multifunctional control valve for a water pump according to claim 2, wherein: the buffer mechanism (5) comprises a buffer spring (51), a connecting block (52) and a key cap (53), wherein the buffer spring (51) is fixedly installed at the lower end of the upper pump cover (1) and used for slowing down the falling speed of the movable mechanism (4) when the movable mechanism moves downwards due to gravity so as to slowly close the main valve (63), the connecting block (52) is fixedly installed at the lower end of the buffer spring (51), and the key cap (53) is fixedly installed at the lower end face of the connecting block (52) and matched with the claw-shaped element (42) to be clamped under the centrifugal force provided by water flow so as to lock the movable mechanism (4) and the buffer mechanism (5).

4. A multifunctional control valve for a water pump according to claim 3, characterized in that: the key cap (53) is of a hollow structure, and the circular arc-shaped protruding blocks (54) are arranged in the key cap (53) and are used for being matched with the circular arc-shaped grooves (46) of the claw-shaped elements (42), so that locking and matching are achieved, the claw-shaped elements (42) are limited, the locking effect of the key cap can be further reinforced, and meanwhile the service life of the claw-shaped elements (42) can be prolonged.

5. The multifunctional control valve for water pump according to claim 4, wherein: the valve mechanism (6) comprises a sealing plate (61), a pressing plate (62), a main valve (63), a helical blade (64) and a shaft sleeve (65); the sealing plate (61), the pressing plate (62) and the main valve (63) are fixedly arranged on the main shaft (2); the main valve (63) rotates around the main shaft (2) to realize the switch control of a passage when in operation, the spiral blade (64) is fixedly arranged at the lower end of the main valve (63) and driven by water flow to rotate upwards so as to drive the main valve (63) to ascend, the sealing plate (61) is fixedly arranged at the upper end of the main valve (63) and used for further improving the sealing effect so as to ensure that water flow is difficult to pass through the valve mechanism (6) in the use process, the pressing plate (62) is fixedly arranged at the upper end of the sealing plate (61) and used for reinforcing the fixing effect on the sealing plate (61), and the spiral groove (69) is formed in the main valve (63) and used for being matched with the main shaft (2) to realize locking and separation; the shaft sleeve (65) is fixedly arranged between the main shaft (2) and the main valve (63) to reduce friction during movement between the main shaft and the main valve (63) so as to prolong the service life.

6. The multifunctional control valve for water pump according to claim 5, wherein: the main valve (63) is provided with a through hole in the middle for being matched with the main shaft (2), the main valve (63) is provided with a slow flow through hole (67) in an annular array, the main valve (63) is provided with an annular hexagonal reinforcing rod (66) in an annular array for reinforcing the mechanical structure of the main valve (63) so as to prolong the service life, and the lower end surface of the main valve (63) is provided with an annular groove (68).

7. The multifunctional control valve for water pump according to claim 6, wherein: the spiral blades (64) are annularly arranged in annular grooves formed in the lower end face of the main valve (63), and the spiral blades (64) are in a shape of a lancet.

8. The multifunctional control valve for a water pump according to claim 7, wherein: the spiral blades (64) are arranged at fixed intervals, and the spiral blades (64) are provided with water flow grooves for further accelerating the flow velocity of water at two sides so as to obtain enough power; the number of blades of the spiral blade (64) is set to 8-10, and the spiral blade (64) is made of glass fiber reinforced polymer.