Profound hypothermia pilot-operated type electromagnetic valve

Abstract

The invention discloses a profound hypothermia pilot-operated type electromagnetic valve, and relates to the field of valves, the profound hypothermia pilot-operated type electromagnetic valve comprises a valve body, a valve seat arranged at the upper end of the valve body and a pilot-operated valve arranged at the upper end of the valve seat, a main valve hole is formed in one end of the inner side of the valve body, and a diaphragm set used for sealing the main valve hole is arranged at the upper end of the main valve hole; a pilot hole is formed in the inner side of the bottom of the pilot valve, and a filter screen is arranged on the inner side of the liquid inlet end of the valve body. An anti-blocking assembly and an impurity collecting assembly are arranged on the side, away from the main valve hole, of the filter screen. According to the deep hypothermia pilot-operated type electromagnetic valve, the arranged anti-blocking assembly is mainly composed of fan blades, a rotating shell and a brush plate, the fan blades can be driven by water pressure to rotate when the membrane set is opened, then cleaning of the filter screen is achieved, blocking of the filter screen is avoided, and impurity particles can be effectively collected in cooperation with the impurity collecting assembly; and the service life of the deep hypothermia pilot-operated type electromagnetic valve is prolonged.

Description

Technical Field

[0001] The invention relates to the field of valves, and in particular to a deep-cryogenic pilot solenoid valve. Background Art

[0002] Cryogenic pilot solenoid valve is a specially designed solenoid valve, mainly used for controlling fluid in cryogenic environment. This solenoid valve can still maintain stable performance and reliable sealing at extremely low temperature to meet the needs of specific industrial applications. The working principle of cryogenic pilot solenoid valve is similar to that of ordinary pilot solenoid valve, which also drives the opening and closing of the main valve by controlling a small solenoid valve (pilot valve). However, the cryogenic pilot solenoid valve has special design and materials to adapt to low temperature environment.

[0003] The main feature of the pilot solenoid valve is that it has a pilot effect. When the pilot solenoid valve is energized, the valve stem is lifted by electromagnetic force, and the pilot valve port is opened. At this time, the upper chamber of the solenoid valve is depressurized through the pilot hole, forming a pressure difference around the main valve core with a lower top and a higher bottom. Under the action of the pressure difference, the fluid pressure pushes the main valve core upward to open the main valve port. When the power is off, under the action of the spring force and the gravity of the main valve core, the valve stem is reset, the pilot hole is closed, the main valve core moves downward, and the main valve port is closed; at this time, the pressure in the upper chamber of the solenoid valve increases, and the fluid pressure pressurizes the main valve core, which makes the seal better. However, since the pilot hole in the pilot solenoid valve is relatively small, the pilot solenoid valve has high requirements for the cleanliness of the medium flowing through it. Once solid particles are mixed in the medium, it is very easy to cause the pilot hole to be blocked, thus affecting its use.

[0004] A pilot-operated solenoid valve with filtration is disclosed in Chinese Patent Publication No. CN212564648U, which includes a valve body, a drive assembly, a valve seat assembly, a solenoid coil assembly and a filter screen installed in the valve body; a damping hole is arranged inside the valve core in the drive assembly, and a pilot hole is arranged inside the valve seat in the valve seat assembly; one side of the valve body is the medium inlet end, and the other end is the outlet end, the filter screen is arranged in the counterbore channel at the inlet end of the valve body, one end of the counterbore channel is connected to the inlet hole of the inlet end, and the other end is connected to the main cavity of the valve body, and the drive assembly is arranged in the main cavity of the valve body; the solenoid valve has the characteristics that the solenoid valve can filter excess impurities in the air-conditioning system, prevent the damping hole and the pilot hole of the solenoid valve from being blocked, and improve the performance of the product.

[0005] Although the above-mentioned prior art can filter out foreign particles, the filtered foreign particles will accumulate on one side of the filter under water pressure, which may easily cause clogging of the filter over time. Since the filter is fixed inside the valve body, it is difficult to disassemble and clean, and its practicality is poor.

[0006] Therefore, it is necessary to propose a deep cryogenic pilot solenoid valve to solve the above problems. Summary of the invention

[0007] The main purpose of the present invention is to provide a deep cryogenic pilot solenoid valve, which can effectively solve the problems in the background technology.

[0008] To achieve the above object, the technical solution adopted by the present invention is: A cryogenic pilot solenoid valve comprises a valve body, a valve seat arranged at the upper end of the valve body and a pilot valve arranged at the upper end of the valve seat, a main valve hole is arranged at one end of the inner side of the valve body, a diaphragm group for sealing the main valve hole is arranged at the upper end of the main valve hole, a pilot hole is arranged at the inner side of the bottom of the pilot valve, and a filter screen is arranged at the inner side of the liquid inlet end of the valve body; An anti-clogging component and an impurity collecting component are arranged on the side of the filter away from the main valve hole, and the anti-clogging component includes a first fixing frame arranged in the inner cavity of the valve body, a rotating shell is rotatably connected to the first fixing frame, and fan blades are evenly arranged on the outer side of the rotating shell, and the fan blades are driven by water pressure to drive the rotating shell to rotate, and a brush plate corresponding to the filter is arranged at one end of the rotating shell close to the filter; The impurity collecting assembly comprises a fan-shaped collecting shell arranged at the bottom of the valve body and corresponding to the side of the filter screen close to the rotating shell, and a collecting cap connected to the fan-shaped collecting shell is threadedly connected to the middle part of the bottom of the fan-shaped collecting shell.

[0009] Preferably, the axis of the rotating shell coincides with the axis of the valve body, and the end of the rotating shell away from the main valve hole is in a "bullet head" shape.

[0010] Preferably, the fan-shaped collecting shell is fan-shaped and has an open top, and the top of the fan-shaped collecting shell does not protrude from the inner wall of the valve body.

[0011] Preferably, the valve body is also provided with an adjustment component for adjusting the angle of the fan blade, and the adjustment component includes a second fixed frame arranged in the middle of the inner side of the rotating shell, and the second fixed frame is rotatably connected with a transverse axis, the axis of the transverse axis coincides with the axis of the rotating shell, and the end of the transverse axis away from the filter screen extends to the outside of the rotating shell and is provided with a gear, and the end of the transverse axis close to the filter screen is provided with a second bevel gear, the fan blade is rotatably connected to the circumferential side wall of the rotating shell through the rotating shaft, and there is a gap between the end of the fan blade close to the rotating shell and the outer side of the rotating shell, and the end of the rotating shaft away from the fan blade extends to the inner cavity of the rotating shell and A first bevel gear meshing with a second bevel gear is provided, an operating screw is rotatably connected to the corresponding position of the top of the valve body and one end of the rotating shell, the top of the operating screw protrudes from the outside of the valve body and is provided with a knob for driving the operating screw to rotate, a lifting frame is threadedly connected to the part of the operating screw located in the inner cavity of the valve body, a driving rack corresponding to and adapted to the gear is provided at one end of the bottom of the lifting frame, a first guide column is vertically provided at the corresponding position of the inner side of the valve body and the driving rack, and the driving rack and the lifting frame are movably guided and cooperated with the first guide column, so that the horizontal axis is driven to rotate by the gear when the driving rack moves downward.

[0012] Preferably, a guide assembly is provided between the fan blades and the rotating shell, the guide assembly includes guide fins provided on the outside of the rotating shell and corresponding to the fan blades one by one, the guide fins are arc-shaped and adapted to the rotation path of the fan blades, and the side of the guide fins away from the rotating shell is sloped, and a guide groove adapted to the guide fins is provided at one end of the fan blade close to the rotating shell, and the fan blade is movably connected to the guide fins through the guide groove, and a movable shaft with a regular polygonal cross-section is provided at one end of the rotating shaft close to the fan blade, and a movable groove adapted to the movable shaft is provided in the middle of a side of the fan blade close to the rotating shell, and the movable shaft is movably connected to the inner side of the movable groove, when a plurality of the fan blades rotate to be flush with the side wall, one side of the fan blade is just flush with the side wall at the end where the guide fins are higher, and at this time, the plurality of fan blades are in a closed state, and at this time, the side edges between adjacent fan blades are tightly fitted, and the edges of the plurality of fan blades away from the rotating shell are fitted with the inner wall of the valve body.

[0013] Preferably, a floating seal assembly for sealing the multiple fan blades near one end of the rotating shell is provided on the outer side of the rotating shell, and the floating seal assembly includes a fixed ring fixedly arranged on the outer side of one end of the rotating shell, and a sealing ring cooperating with the sliding seal of the rotating shell is provided on the side of the fixed ring close to the fan blades, and a first spring is provided between the sealing ring and the fixed ring, and the sealing ring corresponds to the gap between the multiple fan blades near one end of the rotating shell, and the first spring is always in a contracted state.

[0014] Preferably, a first floating locking assembly is provided at one end of the rotating shell close to the operating screw, the first floating locking assembly includes a first gear ring arranged on the outer side of one end of the rotating shell close to the operating screw, a hollow first square tube is provided at one end of the bottom of the lifting frame away from the driving rack, a first floating plate is movably guided at the bottom of the first square tube, a first braking tooth corresponding to and adapted to the first gear ring is provided at the bottom of the first floating plate, and a second spring is provided between the top of the first floating plate and the top of the inner cavity of the first square tube.

[0015] Preferably, a second floating locking assembly is provided on one end of the inner side of the rotating shell near the operating screw, and the second floating locking assembly includes a second gear ring arranged on the outer side of one end of the horizontal axis near the gear, and a hollow second square tube is provided at the bottom of the inner cavity of the rotating shell corresponding to the second gear ring, and a second floating plate is movably guided at the top of the second square tube, and a second braking tooth corresponding to and adapted to the second gear ring is provided on the top of the second floating plate, and a third spring is provided between the bottom of the second floating plate and the bottom of the inner cavity of the second square tube.

[0016] Preferably, a driving assembly for driving the displacement of the second floating locking assembly is arranged above the second floating locking assembly, and the driving assembly includes a force block arranged on one side of the lower end of the first square tube, a floating frame is arranged at the upper end of the second braking tooth, a second guide column is arranged at the upper end of the floating frame, and the upper end of the second guide column extends to the top of the rotating shell and corresponds to the force block, and the second guide column is movably sealed and connected to the rotating shell.

[0017] Preferably, the positional relationship between the first braking tooth, the first gear ring, the first floating plate, the gear, the force block and the second guide column is configured so that when the first braking tooth engages with the first gear ring, the force block begins to contact the second guide column, and when the second braking tooth separates from the second gear ring, the driving rack begins to engage with the gear.

[0018] Compared with the prior art, the present invention provides a deep cryogenic pilot solenoid valve, which has the following beneficial effects: The cryogenic pilot solenoid valve is mainly composed of a fan blade, a rotating shell and a brush plate through the anti-clogging component. The fan blade can be driven to rotate by water pressure when the diaphragm group is opened, thereby cleaning the filter screen and avoiding clogging of the filter screen. The impurity collection component can effectively collect impurity particles, which is easy to use and increases the service life of the cryogenic pilot solenoid valve. The deep-cryogenic pilot solenoid valve can adjust the angle of the fan blades through the adjustment component and the guide component, so as to adjust it to a closed state, which is convenient for intercepting the liquid inlet end of the valve body when disassembling the collecting cap or disassembling the valve seat for maintenance and inspection, thereby avoiding a large amount of liquid outflow affecting the disassembly and maintenance operations. The floating sealing component is convenient for sealing the inner circumference of the multiple fan blades after closure, thereby avoiding liquid outflow from the gap between the fan blades and the rotating shell. The deep-cryogenic pilot solenoid valve can conveniently lock the rotating shell by means of the first floating locking assembly, which not only facilitates the subsequent rotation of the horizontal axis, but also can selectively clean the filter screen, and can be unlocked when cleaning is needed. The second floating locking assembly can conveniently lock the horizontal axis to prevent the horizontal axis from rotating when the rotating shell rotates. The setting of the drive assembly can facilitate the unlocking of the horizontal axis, thereby facilitating the driving rack to drive the horizontal axis to rotate through the gear. The first floating locking assembly, the second floating locking assembly and the drive assembly are all arranged in linkage with the adjustment assembly. The braking of the rotating shell, the unlocking of the horizontal axis and the rotation of the horizontal axis can be achieved in one operation. The operation is convenient, the structure is simple and compact, the efficiency is improved, and the practicality is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 It is a partial cross-sectional structural schematic diagram of the present invention; Figure 4 It is a schematic diagram of the overall structure of the adjustment component and the rotating shell of the present invention; Figure 5 The present invention Figure 4 A structural diagram from another perspective of the basis; Figure 6 This is a schematic diagram of the structure of the fan blades of the present invention when they are in a closed state; Figure 7 It is a schematic diagram of the overall structure of the operating screw rod and the lifting frame of the present invention; Figure 8 It is a schematic structural diagram of the first floating plate and the first square tube of the present invention in a disassembled state; Fig. 9 It is a schematic diagram of a partial cross-sectional structure of a rotating shell of the present invention; Fig.10 It is a schematic diagram of the structure of the rotating shell of the present invention in a disassembled state; Fig.11 The present invention Fig.10 A structural diagram from another perspective based on the above; Fig.12 It is a schematic diagram of the structure of the present invention when the rotating shaft and the fan blades are disassembled; Fig.13 is a schematic structural diagram of the guide fin of the present invention; Fig.14 It is a structural schematic diagram of the first floating locking assembly, the second floating locking assembly and the driving assembly of the present invention in an overall matching state; Fig.15 The present invention Fig.14 A structural diagram from another perspective of the basis; Fig.16 It is a schematic structural diagram of the second floating plate and the second square tube of the present invention in a disassembled state.

[0020] In the figure: 1, valve body; 2, pilot valve; 3, valve seat; 4, fan-shaped collecting shell; 5, collecting cap; 6, knob; 7, pilot hole; 8, main valve hole; 9, diaphragm group; 10, filter screen; 11, first fixed frame; 12, rotating shell; 13, fan blade; 14, operating screw; 15, brush plate; 16, driving rack; 17, first gear ring; 18, lifting frame; 19, first guide column; 20, fixed ring; 21, sealing ring; 22, first square tube; 23, gear; 24, guide fin; 25, horizontal axis; 26, first spring; 27, second guide column; 28, first floating plate; 29, first brake tooth; 30, force block; 31, second spring; 32, second fixed frame; 33, rotating shaft; 34, first bevel gear; 35, second bevel gear; 36, floating frame; 37, second gear ring; 38, guide groove; 39, movable shaft; 40, movable groove; 41, second square tube; 42, second brake tooth; 43, third spring; 44, second floating plate. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] like Figure 1-Figure 3 As shown, a cryogenic pilot solenoid valve comprises a valve body 1, a valve seat 3 arranged at the upper end of the valve body 1 and a pilot valve 2 arranged at the upper end of the valve seat 3, a main valve hole 8 is arranged at one end inside the valve body 1, a diaphragm group 9 for sealing the main valve hole 8 is arranged at the upper end of the main valve hole 8, a pilot hole 7 is arranged on the inner side of the bottom of the pilot valve 2, and a filter screen 10 is arranged on the inner side of the liquid inlet end of the valve body 1; the above are all existing conventional technical means, and the specific details will not be repeated in detail.

[0023] Different from the prior art, Figure 2-Figure 5As shown, an anti-clogging component and an impurity collecting component are provided on the side of the filter screen 10 away from the main valve hole 8, and the anti-clogging component includes a first fixing frame 11 fixedly connected to the inner cavity of the valve body 1, and a rotating shell 12 is rotatably connected to the first fixing frame 11, and the rotating shell 12 is rotatably connected to the first fixing frame 11 through a bearing, and the axis of the rotating shell 12 coincides with the axis of the valve body 1, and the end of the rotating shell 12 away from the main valve hole 8 is in a "bullet head" shape, which can reduce the resistance to the liquid medium, and a plurality of fan blades 13 are evenly arranged on the outside of the rotating shell 12, and the fan blades 13 are driven by water pressure to drive the rotating shell 12 to rotate, and when the fan blades 13 are in the initial state, there is a gap between the outer edge of the fan blades 13 and the inner wall of the valve body 1, and the end of the rotating shell 12 close to the filter screen 10 is provided with a brush plate 15 corresponding to the filter screen 10; like Figure 1-Figure 3 As shown, the impurity collection assembly includes a fan-shaped collecting shell 4 arranged at the bottom of the valve body 1 and corresponding to the side of the filter 10 close to the rotating shell 12. The fan-shaped collecting shell 4 is fan-shaped and has an open top, and the top of the fan-shaped collecting shell 4 does not protrude from the inner wall of the valve body 1. The middle part of the bottom of the fan-shaped collecting shell 4 is threadedly connected with a collecting cap 5 connected to the fan-shaped collecting shell 4.

[0024] like Figure 2-Figure 15 As shown, the valve body 1 is also provided with an adjustment component for adjusting the angle of the fan blade 13, and the adjustment component includes a second fixing frame 32 fixedly connected to the middle part of the inner side of the rotating shell 12, and the second fixing frame 32 is rotatably connected with a transverse shaft 25, and the transverse shaft 25 is rotatably connected to the second fixing frame 32 through a bearing, and the axis of the transverse shaft 25 coincides with the axis of the rotating shell 12, and the end of the transverse shaft 25 away from the filter screen 10 extends to the outside of the rotating shell 12 and is provided with a gear 23, and the extension of the transverse shaft 25 and the rotating shell 12 is rotatably connected through a sealed bearing, and the end of the transverse shaft 25 close to the filter screen 10 is provided with a second bevel gear 35, and the fan blade 13 is rotatably connected to the circumferential side wall of the rotating shell 12 through the rotating shaft 33, and the rotating shaft 33 is rotatably connected to the rotating shell 12 through a sealed bearing, and the end of the fan blade 13 close to the rotating shell 12 is connected to the outer side of the rotating shell 12 There is a gap between the two ends of the rotating shaft 33, one end of the rotating shaft 33 away from the fan blade 13 extends to the inner cavity of the rotating shell 12 and is provided with a first bevel gear 34 meshing with the second bevel gear 35. The corresponding part of the top of the valve body 1 and one end of the rotating shell 12 is rotatably connected with an operating screw 14 through a sealed bearing. The top of the operating screw 14 protrudes from the outside of the valve body 1 and is provided with a knob 6 for driving the operating screw 14 to rotate. The operating screw 14 is located in the inner cavity of the valve body 1 and is threadedly connected with a lifting frame 18. One end of the bottom of the lifting frame 18 is provided with a driving rack 16 corresponding to and adapted to the gear 23. A first guide column 19 is vertically provided at the corresponding part of the inner side of the valve body 1 and the driving rack 16. The driving rack 16 and the lifting frame 18 are matched with the first guide column 19 through a linear bearing movable guide, so that when the rack 16 is driven to move downward, the horizontal axis 25 is driven to rotate through the gear 23.

[0025] like Figure 5 , Figure 10-13 As shown, a guide assembly is provided between the fan blade 13 and the rotating shell 12, and the guide assembly includes a guide fin 24 provided on the outer side of the rotating shell 12 and corresponding to the fan blade 13 one by one, the guide fin 24 is arc-shaped and adapted to the rotation path of the fan blade 13, and the side of the guide fin 24 away from the rotating shell 12 is sloped, and the end of the fan blade 13 close to the rotating shell 12 is provided with a guide groove 38 adapted to the guide fin 24, and the fan blade 13 is movably guided and connected to the guide fin 24 through the guide groove 38, and the end of the rotating shaft 33 close to the fan blade 13 is provided with a guide groove 38 adapted to the guide fin 24. There is a movable shaft 39 with a regular polygonal cross-section, and a movable groove 40 adapted to the movable shaft 39 is provided in the middle of one side of the fan blade 13 close to the rotating shell 12, and the movable shaft 39 is movably connected to the inner side of the movable groove 40. When the multiple fan blades 13 are rotated to be flush with the side wall, one side of the fan blade 13 is just flush with the side wall of the higher end of the guide fin 24. At this time, the multiple fan blades 13 are in a closed state, and the side edges between adjacent fan blades 13 are tightly fitted, and the edges of the multiple fan blades 13 away from the rotating shell 12 are fitted with the inner wall of the valve body 1.

[0026] like Figure 4 , Figure 6 , Fig.11 As shown, a floating seal assembly for sealing the multiple fan blades 13 near one end of the rotating shell 12 is provided on the outer side of the rotating shell 12, and the floating seal assembly includes a fixed ring 20 fixedly arranged on the outer side of one end of the rotating shell 12, and a sealing ring 21 for slidingly sealing with the rotating shell 12 is provided on the side of the fixed ring 20 near the fan blades 13, and a first spring 26 is provided between the sealing ring 21 and the fixed ring 20, and the sealing ring 21 corresponds to the gap between the multiple fan blades 13 near one end of the rotating shell 12, and the first spring 26 is always in a contracted state, so that the sealing ring 21 is always in close contact with the fan blades 13.

[0027] like Figure 4-Figure 5 , Figure 7-Figure 8 , Figure 14-15 As shown, a first floating locking assembly is provided at one end of the rotating shell 12 close to the operating screw 14, and the first floating locking assembly includes a first gear ring 17 arranged on the outer side of one end of the rotating shell 12 close to the operating screw 14, and a hollow first square tube 22 is provided at one end of the bottom of the lifting frame 18 away from the driving rack 16, and a first floating plate 28 is movably guided and connected to the bottom of the first square tube 22, and a first braking tooth 29 corresponding to and adapted to the first gear ring 17 is provided at the bottom of the first floating plate 28, and a second spring 31 is provided between the top of the first floating plate 28 and the top of the inner cavity of the first square tube 22.

[0028] like Figure 9-11 , Figure 14-16As shown, a second floating locking assembly is provided at one end of the inner side of the rotating shell 12 near the operating screw 14, and the second floating locking assembly includes a second gear ring 37 arranged on the outer side of one end of the horizontal axis 25 near the gear 23, and a hollow second square tube 41 is provided at the bottom of the inner cavity of the rotating shell 12 corresponding to the second gear ring 37, and the top of the second square tube 41 is movably guided and connected with a second floating plate 44, and the top of the second floating plate 44 is provided with a second braking tooth 42 corresponding to and adapted to the second gear ring 37, and a third spring 43 is provided between the bottom of the second floating plate 44 and the bottom of the inner cavity of the second square tube 41.

[0029] Figure 7 , Fig. 9 , Fig.10 , Fig.11 , Fig.14 , Fig.15 As shown, a driving assembly for driving the displacement of the second floating locking assembly is arranged above the second floating locking assembly, and the driving assembly includes a force block 30 arranged on one side of the lower end of the first square tube 22, a floating frame 36 is arranged at the upper end of the second braking tooth 42, a second guide column 27 is arranged at the upper end of the floating frame 36, and the upper end of the second guide column 27 extends to the top of the rotating shell 12 and corresponds to the force block 30, and the second guide column 27 is connected to the rotating shell 12 through a linear bearing movable seal.

[0030] It should be noted that the positional relationship among the first brake tooth 29, the first gear ring 17, the first floating plate 28, the gear 23, the force block 30 and the second guide column 27 is configured such that when the first brake tooth 29 is meshed with the first gear ring 17, the force block 30 starts to contact the second guide column 27, and when the second brake tooth 42 is separated from the second gear ring 37, the driving rack 16 starts to mesh with the gear 23.

[0031] Working principle: when in use, the impurity particles in the liquid can be blocked by the filter 10 when it circulates, and some of them are collected by the collection cap 5 after being collected by the fan-shaped collection shell 4, and some will adhere to or get stuck on the surface of the filter 10. At this time, the knob 6 can be rotated to make the first brake tooth 29 mesh with the first gear ring 17, or they can be not meshed. If in the meshing state, when the diaphragm group 9 is opened, the water flow can flow normally, and the filter 10 is not cleaned at this time. When the first brake tooth 29 and the first gear ring 17 are in a separated state, when the diaphragm group 9 is opened, the fan blades 13 drive the rotating shell 12 to rotate under the action of the water flow, and the rotating shell 12 drives the brush plate 15 to rotate to continuously scrape and brush one side of the filter 10, so that the impurity particles can be cleaned off, and the rotating shell 12 can be rotated when cleaning is needed. The shell 12 rotates, and can also be used to keep the rotating shell 12 rotating when the liquid is circulating. It can be implemented selectively. When it is necessary to disassemble the collecting cap 5 or the diaphragm group 9, the knob 6 is also rotated to drive the operating screw 14 to rotate. The operating screw 14 drives the driving rack 16 and the first square tube 22 to move downward through the lifting frame 18. Initially, if the first braking tooth 29 is in a meshing state with the first gear ring 17, the first braking tooth 29 remains stationary, and the first square tube 22 and the driving rack 16 are driven downward by the lifting frame 18. If the first braking tooth 29 is in a separated state with the first gear ring 17 at the beginning, the first braking tooth 29 is first meshed with the first gear ring 17 and then remains stationary. Since the first braking tooth 29 locks the first gear ring 17, the rotating shell 12 remains stationary, and the operation The screw rod 14 continues to rotate, the first square tube 22 and the driving rack 16 continue to move downward, the second spring 31 contracts, and then the first square tube 22 presses the second guide column 27 through the force block 30, and the second guide column 27 drives the second brake tooth 42 to move downward through the floating frame 36, and the second brake tooth 42 drives the second floating plate 44 to move downward, and the third spring 43 contracts. Finally, the second brake tooth 42 is separated from the second gear ring 37, and then the horizontal shaft 25 is unlocked, the first square tube 22 continues to move downward, the second spring 31 and the third spring 43 continue to contract, and finally the driving rack 16 begins to mesh with the gear 23, and then the horizontal shaft 25 drives the second bevel gear 35 to rotate, and the second bevel gear 35 drives the blade 13 to rotate through the first bevel gear 34 and the rotating shaft 33, and between the guide fins 24 and Under the action of the guide groove 38, the fan blades 13 will move outward while rotating, and are in a closed state when the sides of multiple fan blades 13 are flush. At this time, the sides of adjacent fan blades 13 are sealed, and the edge of the fan blade 13 away from the rotating shell 12 is sealed with the inner wall of the valve body 1. Due to the rotation of the fan blades 13, the first spring 26 is gradually reset, and then the sealing ring 21 seals the inner gap of the multiple fan blades 13, and then the turning of the knob 6 is stopped. Finally, the collecting cap 5 can be disassembled and cleaned, or the valve seat 3 can be disassembled and assembled to maintain the interior of the solenoid valve. After completion, the knob 6 is rotated in the opposite direction to reset the fan blades 13, the drive rack 16 and the gear 23 are separated and reset, and the horizontal axis 25 is locked. The device is easy to operate and has a compact structure, which increases convenience and practicality.

[0032] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A cryogenic pilot solenoid valve, comprising a valve body (1), a valve seat (3) arranged at the upper end of the valve body (1), and a pilot valve (2) arranged at the upper end of the valve seat (3), characterized in that: A main valve hole (8) is provided at one end of the inner side of the valve body (1); a diaphragm group (9) for sealing the main valve hole (8) is provided at the upper end of the main valve hole (8); a pilot hole (7) is provided at the inner side of the bottom of the pilot valve (2); and a filter screen (10) is provided at the inner side of the liquid inlet end of the valve body (1); An anti-clogging component and an impurity collecting component are arranged on a side of the filter screen (10) away from the main valve hole (8), the anti-clogging component comprising a first fixing frame (11) arranged in the inner cavity of the valve body (1), a rotating shell (12) being rotatably connected to the first fixing frame (11), fan blades (13) being evenly arranged on the outer side of the rotating shell (12), the fan blades (13) being driven by water pressure to drive the rotating shell (12) to rotate, and a brush plate (15) corresponding to the filter screen (10) is arranged on one end of the rotating shell (12) close to the filter screen (10); The impurity collecting assembly comprises a fan-shaped collecting shell (4) arranged at the bottom of the valve body (1) and corresponding to the side of the filter screen (10) close to the rotating shell (12), and a collecting cap (5) in communication with the fan-shaped collecting shell (4) is threadedly connected to the middle part of the bottom of the fan-shaped collecting shell (4).

2. A cryogenic pilot solenoid valve according to claim 1, characterized in that: The axis of the rotating shell (12) coincides with the axis of the valve body (1), and the end of the rotating shell (12) away from the main valve hole (8) is in the shape of a "bullet head".

3. The deep cryogenic pilot solenoid valve according to claim 1, characterized in that: The fan-shaped collecting shell (4) is fan-shaped and has an open top, and the top of the fan-shaped collecting shell (4) does not protrude from the inner wall of the valve body (1).

4. The deep cryogenic pilot solenoid valve according to claim 1, characterized in that: The valve body (1) is also provided with an adjustment component for adjusting the angle of the fan blade (13), the adjustment component comprising a second fixing frame (32) arranged at the middle part of the inner side of the rotating shell (12), the second fixing frame (32) being rotatably connected with a transverse shaft (25), the axis of the transverse shaft (25) coinciding with the axis of the rotating shell (12), and the end of the transverse shaft (25) away from the filter screen (10) extending to the outer side of the rotating shell (12) and being provided with a gear (23), the end of the transverse shaft (25) close to the filter screen (10) being provided with a second bevel gear (35), the fan blade (13) being rotatably connected to the circumferential side wall of the rotating shell (12) via the rotating shaft (33), and a gap being provided between the end of the fan blade (13) close to the rotating shell (12) and the outer side of the rotating shell (12), and the end of the rotating shaft (33) away from the fan blade (13) extending to the inner cavity of the rotating shell (12) and A first bevel gear (34) meshing with a second bevel gear (35) is provided. An operating screw (14) is rotatably connected to a portion of the top of the valve body (1) corresponding to one end of the rotating shell (12). The top of the operating screw (14) protrudes from the outside of the valve body (1) and is provided with a knob (6) for driving the operating screw (14) to rotate. A lifting frame (18) is threadedly connected to a portion of the operating screw (14) located in the inner cavity of the valve body (1). A driving rack (16) corresponding to and adapted to the gear (23) is provided at one end of the bottom of the lifting frame (18). A first guide column (19) is vertically provided at a portion of the inner side of the valve body (1) corresponding to the driving rack (16). The driving rack (16) and the lifting frame (18) are movably guided and matched with the first guide column (19), so that when the driving rack (16) moves downward, the horizontal shaft (25) is driven to rotate through the gear (23).

5. A cryogenic pilot solenoid valve according to claim 4, characterized in that: A guide assembly is provided between the fan blade (13) and the rotating shell (12), the guide assembly comprising guide fins (24) provided on the outside of the rotating shell (12) and corresponding to the fan blades (13) one by one, the guide fins (24) being arc-shaped and adapted to the rotation path of the fan blades (13), and a side of the guide fins (24) away from the rotating shell (12) being slope-shaped, a guide groove (38) adapted to the guide fins (24) being provided at one end of the fan blade (13) close to the rotating shell (12), and the fan blade (13) being movably guided and connected to the guide fins (24) via the guide groove (38), and the rotating shaft (33) being close to the fan blade (13) A movable shaft (39) having a regular polygonal cross section is provided at one end, and a movable groove (40) adapted to the movable shaft (39) is provided at the middle of one side of the fan blade (13) close to the rotating shell (12), and the movable shaft (39) is movably connected to the inner side of the movable groove (40). When the plurality of fan blades (13) rotate to be flush with the side wall, one side of the fan blade (13) is just flush with the side wall of the higher end of the guide fin (24). At this time, the plurality of fan blades (13) are in a closed state, and at this time, the side edges of adjacent fan blades (13) are tightly fitted, and the edges of the plurality of fan blades (13) away from the rotating shell (12) are fitted with the inner wall of the valve body (1).

6. A cryogenic pilot solenoid valve according to claim 5, characterized in that: A floating seal assembly for sealing a plurality of blades (13) close to one end of the rotating shell (12) is arranged on the outside of the rotating shell (12), the floating seal assembly comprising a fixed ring (20) fixedly arranged on the outside of one end of the rotating shell (12), a sealing ring (21) for slidingly sealing with the rotating shell (12) is arranged on one side of the fixed ring (20) close to the blades (13), a first spring (26) is arranged between the sealing ring (21) and the fixed ring (20), and the sealing ring (21) corresponds to a gap between the plurality of blades (13) close to one end of the rotating shell (12), and the first spring (26) is always in a contracted state.

7. A cryogenic pilot solenoid valve according to claim 6, characterized in that: A first floating locking assembly is arranged at one end of the rotating shell (12) close to the operating screw (14), and the first floating locking assembly comprises a first gear ring (17) arranged on the outer side of one end of the rotating shell (12) close to the operating screw (14); a hollow first square tube (22) is arranged at one end of the bottom of the lifting frame (18) away from the driving rack (16); a first floating plate (28) is movably guided and connected to the bottom of the first square tube (22); a first braking tooth (29) corresponding to and adapted to the first gear ring (17) is arranged at the bottom of the first floating plate (28); and a second spring (31) is arranged between the top of the first floating plate (28) and the top of the inner cavity of the first square tube (22).

8. The deep cryogenic pilot solenoid valve according to claim 7, characterized in that: A second floating locking assembly is arranged at one end of the inner side of the rotating shell (12) close to the operating screw rod (14), and the second floating locking assembly comprises a second gear ring (37) arranged on the outer side of one end of the transverse axis (25) close to the gear (23). A hollow second square tube (41) is arranged at a position corresponding to the second gear ring (37) at the bottom of the inner cavity of the rotating shell (12), and a second floating plate (44) is movably guided and connected to the top of the second square tube (41). A second braking tooth (42) corresponding to and matching the second gear ring (37) is arranged at the top of the second floating plate (44), and a third spring (43) is arranged between the bottom of the second floating plate (44) and the bottom of the inner cavity of the second square tube (41).

9. The deep cryogenic pilot solenoid valve according to claim 8, characterized in that: A driving assembly for driving the displacement of the second floating locking assembly is arranged above the second floating locking assembly, the driving assembly comprising a force block (30) arranged on one side of the lower end of the first square tube (22), a floating frame (36) is arranged at the upper end of the second braking tooth (42), a second guide column (27) is arranged at the upper end of the floating frame (36), and the upper end of the second guide column (27) extends to the top of the rotating shell (12) and corresponds to the force block (30), and the second guide column (27) is movably sealed and connected to the rotating shell (12).

10. A cryogenic pilot solenoid valve according to claim 9, characterized in that: The positional relationship among the first brake tooth (29), the first gear ring (17), the first floating plate (28), the gear (23), the force block (30) and the second guide column (27) is configured such that when the first brake tooth (29) is meshed with the first gear ring (17), the force block (30) begins to contact the second guide column (27), and when the second brake tooth (42) is separated from the second gear ring (37), the drive rack (16) begins to mesh with the gear (23).

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