Pilot-operated type manual proportional valve

Abstract

The invention relates to the technical field of proportional valves, and discloses a pilot-operated type manual proportional valve which comprises a proportional valve body, and a manual regulator is arranged at the top of the proportional valve body; a fluid medium is filtered through the filter screen on the inner side of the filter box, the filtered fluid medium can enter the proportional valve body along the connecting pipe, the situation that the proportional valve body is blocked is reduced, and the using effect of the proportional valve body is improved; the stirring blades push the fluid to axially move along the liquid changing pipe and the communicating cylinder, so that the fluid can more quickly pass through the pipeline, the retention time of the fluid in the liquid changing pipe and the communicating cylinder is shortened, and meanwhile, impurity particles contained in the fluid are flushed into the filter box, so that the phenomenon that the impurity particles stay in the liquid changing pipe and the communicating cylinder is reduced; and meanwhile, the rotating transmission fan is driven to generate wind power, so that the situation that a circuit signal breaks down due to the fact that the proportional valve body and the top shell are prone to being affected with damp in the environment with heavy humidity is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of proportional valves, in particular to a pilot-operated manual proportional valve. Background Art

[0002] The pilot-operated manual proportional valve is a proportional valve that controls the flow or pressure of the main circuit through a pilot system. It allows manual adjustment and has proportional control characteristics. When the pilot valve core is opened, the oil in the main circuit oil chamber will flow to the low-pressure oil circuit, reducing the pressure on the valve core, reducing the curvature of the valve core, expanding the valve port, and increasing the flow. Conversely, when the pilot valve core is closed, the pressure in the main circuit oil chamber increases, the curvature of the valve core increases, the valve port shrinks, and the flow decreases. This method of adjusting the main circuit flow by changing the position of the pilot valve core realizes proportional control of the flow.

[0003] In the prior art, the authorization publication number "CN118623067A" discloses "a follow-up pilot proportional valve"; including: a valve body, the valve body is provided with a liquid outlet cavity, a liquid inlet cavity, a first main valve cavity, and a second main valve cavity; a main valve core, the main valve core is slidably arranged in the valve body; a pilot slide valve, the pilot slide valve is slidably arranged at one end of the main valve core close to the control cavity, and the pilot slide valve is used to open and close the radial throttling hole; a driving device, which is used to drive the pilot slide valve to slide. The follow-up pilot proportional valve in the present invention has a pilot slide valve that closes the radial throttling hole, so that the main valve core is pressed by the closing force, which ensures the stability of the closed state, and also improves the control accuracy, stability and consistency of the follow-up pilot proportional valve in the open state; its overall structure is relatively simple compared to other follow-up pilot proportional valves, easy to process and manufacture, and has a low cost, and has the characteristics of low driving power demand, and is suitable for some high-pressure and large-flow application scenarios.

[0004] The above-mentioned "a kind of follow-up pilot proportional valve" still has some disadvantages, for example: the existing pilot proportional valve has high requirements for the cleanliness of the fluid. If the fluid medium contains impurities, the impurities in the fluid medium are easy to block the pilot valve hole, causing the proportional valve to be blocked and cause failure;

[0005] For this reason, a pilot-operated manual proportional valve is proposed here to solve the above-mentioned problems. Summary of the invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a pilot manual proportional valve, which effectively solves the problem that when the pilot manual proportional valve on the market is used, if the fluid medium contains impurities, the impurities in the fluid medium are likely to clog the pilot valve hole, causing the proportional valve to be clogged and malfunction.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pilot-operated manual proportional valve, comprising a proportional valve body, a manual regulator is arranged on the top of the proportional valve body, a top outer shell is fixedly connected to the top of the proportional valve body, a side of the proportional valve body is fixedly connected to a protective side box, a side of the protective side box is fixedly connected to a liquid exchange pipe, one end of the liquid exchange pipe is fixedly connected to a connecting cylinder, a side of the connecting cylinder is fixedly connected to a filter screen, one side of the filter screen is fixedly connected to a filter box, the inner side of the filter box is fixedly connected to the filter screen, the other side of the filter box is fixedly connected to a connecting pipe, the other end of the connecting pipe is fixedly connected to one side of the proportional valve body, and a stirring blade is arranged on the inner side of the filter screen.

[0008] Preferably: the top of the protective side box is fixedly connected to a protective outer box, connecting frames are opened on both sides of the protective outer box, the inner side of the protective outer box is fixedly connected to a motor body, the output shaft of the motor body is fixedly connected to a main transmission rod, the bottom end of the main transmission rod is fixedly connected to a bottom beveled gear plate, one side of the bottom beveled gear plate is meshingly connected to a side beveled gear plate, and one side of the side beveled gear plate is fixedly connected to one side of a stirring blade.

[0009] Preferably, one side of the stirring blade is movably connected to a first bearing disk, one side of the first bearing disk is movably connected to a first side fixing plate, and both ends of the first side fixing plate are fixedly connected to the inner side of the filter screen.

[0010] Preferably, the other side of the side bevel gear disc is fixedly connected with a side movable rod, one end of the side movable rod is fixedly connected with a side connecting plate, and one side of the side connecting plate is movably connected with a cleaning brush.

[0011] Preferably: a storage box is movably connected to the inner side of the protective side box, a bottom slide bar is fixedly connected to the bottom of the storage box, a storage groove is opened on the inner side of the storage box, and a side grip bar is fixedly connected to one side of the storage box.

[0012] Preferably: one side of the protective side box is fixedly connected to the limiting side box, one side of the limiting side box is provided with a connecting frame, the inner side of the limiting side box is movably connected to a spring body, the bottom of the spring body is movably connected to a pressing plate, and the bottom of the pressing plate is fixedly connected to a bottom limiting plate.

[0013] Preferably: a main transmission gear disc is fixedly connected to the surface of the main transmission rod, a transmission belt is meshed on one side of the main transmission gear disc, a side transmission gear disc is meshed on one side of the transmission belt, and a side transmission gear disc is fixedly connected to the bottom of the side transmission gear disc.

[0014] Preferably: the top of the main transmission gear plate is fixedly connected with a first bevel gear plate, one side of the first bevel gear plate is meshedly connected with a second bevel gear plate, one side of the second bevel gear plate is fixedly connected with a side connecting rod, one end of the side connecting rod is fixedly connected with a third bevel gear plate, one side of the third bevel gear plate is meshedly connected with a fourth bevel gear plate, the top of the fourth bevel gear plate is fixedly connected with a top connecting rod, the top of the top connecting rod is fixedly connected with a fifth bevel gear plate, one side of the fifth bevel gear plate is meshedly connected with a sixth bevel gear plate, one side of the sixth bevel gear plate is fixedly connected with a transmission fan, one side of the transmission fan is movably connected with a third bearing disk, one side of the third bearing disk is movably connected with a third fixed plate, and one side of the third fixed plate is fixedly connected to the inner side of the protective outer box.

[0015] Preferably, the bottom of the fourth bevel gear plate is fixedly connected to a first fixing rod, the bottom of the first fixing rod is movably connected to a second bearing plate, and the bottom of the second bearing plate is movably connected to the top of the protective side box.

[0016] The method of using the pilot-operated manual proportional valve includes the following steps:

[0017] S1. Before the fluid medium enters the proportional valve body along the fluid exchange pipe, it will enter the protective side box. After entering the protective side box, the fluid medium will enter the fluid exchange pipe. The fluid medium will enter the connecting tube along the fluid exchange pipe. The fluid medium entering the connecting tube will enter the filter box and pass through the filter screen surface inside the filter box.

[0018] S2, by starting the motor body, the motor body will drive the main transmission rod to rotate, the rotating main transmission rod will drive the bottom bevel gear plate to rotate, through the engagement of the bottom bevel gear plate and the side bevel gear plate, the stirring blade on one side of the side bevel gear plate can be driven to rotate synchronously when the bottom bevel gear plate rotates, and the rotating stirring blade will be movably connected and supported on one side of the first side fixed plate through the first bearing plate;

[0019] S3, the rotating side bevel gear disk drives the stirring blade to rotate, and at the same time, it will drive the side movable rod to rotate synchronously, and the rotating side movable rod will drive the side connecting plate to rotate synchronously, and the rotating side movable rod will drive more cleaning brushes to rotate along the surface of the filter screen, and at the same time, particulate impurities will fall into the storage groove inside the storage box and accumulate. When the proportional valve body is closed, at this time, by holding the pressing plate and pulling it upward along the inner side of the connecting frame, the pressing plate will drive the spring body to produce compression deformation after it is lifted up, and the spring body after compression deformation will drive the pressing plate and the bottom limit plate to rise along the inner side of the limit side box. At this time, by lifting the bottom limit plate, the storage box loses its limit, and at this time, holding the side grip and pulling the storage box will drive the bottom slide bar to slide along the inner side of the protective side box, and drive the storage box to move out of the outer side of the protective side box;

[0020] S4. When the rotating motor body drives the main transmission rod to rotate, it will synchronously drive the first bevel gear plate to rotate, the rotating first bevel gear plate will drive the second bevel gear plate to mesh and rotate, the rotation of the rotating second bevel gear plate will synchronously drive the side connecting rod to rotate, the rotated side connecting rod will drive the third bevel gear plate to rotate, the rotating third bevel gear plate will drive the fourth bevel gear plate to rotate, the rotating fourth bevel gear plate will drive the top connecting rod to rotate, and during the rotation of the fourth bevel gear plate, it will drive the first fixed rod to rotate along the top of the second bearing plate, through the rotation of the top connecting rod, it will drive the fifth bevel gear plate to rotate, through the meshing of the fifth bevel gear plate and the sixth bevel gear plate, during the rotation of the fifth bevel gear plate, it will drive the sixth bevel gear plate to rotate synchronously, and during the rotation of the sixth bevel gear plate, it will drive the transmission fan to rotate along the connecting frame, and one side of the transmission fan is movably connected and supported on one side of the third fixed plate through the third bearing plate, and the transmission fan is supported by the movably connected third bearing plate;

[0021] S6. When the motor body drives the main transmission rod to rotate, the rotation of the main transmission rod will synchronously drive the main transmission sprocket to rotate, the rotating main transmission sprocket will drive the transmission belt to rotate, the rotating transmission belt will drive the meshing side transmission sprocket to rotate synchronously, the rotating side transmission sprocket will drive the side transmission rod to rotate, after the motor body is started, it will synchronously drive the main transmission rod and the side transmission rod to rotate.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1) Before the fluid medium enters the proportional valve body along the fluid exchange pipe, it will enter the protective side box. After entering the protective side box, the fluid medium will enter the fluid exchange pipe, and the fluid medium will enter the connecting tube along the fluid exchange pipe. The fluid medium entering the connecting tube will enter the filter box and be filtered through the filter screen inside the filter box to filter the impurities and particles in the fluid medium. The filtered fluid medium will enter the proportional valve body along the connecting pipe, reducing the blockage of the proportional valve body and improving the use effect of the proportional valve body.

[0024] 2) The rotating stirring blades are movably connected and supported on one side of the first side fixing plate through the first bearing disk, and are fixed to the inner side of the filter screen through the first side fixing plate, so as to movably support the rotating stirring blades, thereby improving the stability of the rotation of the stirring blades. Through the rotation of the stirring blades, the fluid is pushed to move axially along the liquid exchange pipe and the connecting cylinder, which helps the fluid to pass through the pipeline faster, shortens the residence time of the fluid in the liquid exchange pipe and the connecting cylinder, and at the same time, the impurity particles contained in the fluid are flushed into the filter box, reducing the impurity particles staying in the liquid exchange pipe and the connecting cylinder, and reducing the accumulation of dirt in the liquid exchange pipe and the connecting cylinder, thereby improving the efficiency of fluid flow, and improving the effect and stability of the use of the proportional valve body;

[0025] 3) The rotating side movable rod will synchronously drive the side connecting plate to rotate. The rotating side movable rod will drive more cleaning brushes to rotate along the surface of the filter screen, and scrub the particulate impurities attached to the filter screen surface during filtering, thereby reducing the adhesion and accumulation of impurity particles on the filter screen surface, and improving the filtering effect of the filter screen on the fluid medium. At the same time, after the bottom limit plate is lifted, the storage box loses its limit. At this time, holding the side grip rod to pull the storage box will drive the bottom slide bar to slide along the inner side of the protective side box, and drive the storage box to move out of the outer side of the protective side box, so as to facilitate the centralized cleaning of impurity particles accumulated in the storage tank, thereby reducing the workload of the operator;

[0026] 4) Through the meshing of the fifth beveled toothed disc and the sixth beveled toothed disc, the sixth beveled toothed disc will be driven to rotate synchronously during the rotation of the fifth beveled toothed disc, and the transmission fan will be driven to rotate along the connecting frame during the rotation of the sixth beveled toothed disc, and one side of the transmission fan is supported on one side of the third fixed plate through the movable connection of the third bearing disc. The transmission fan is supported by the movable connection of the third bearing disc, which improves the rotation stability of the transmission fan. The rotating transmission fan will generate wind to blow toward the surfaces of the proportional valve body and the top outer shell, thereby improving the air circulation performance of the proportional valve body and the top outer shell surface, and reducing the situation in which the proportional valve body and the top outer shell are easily affected by moisture in a humid environment, resulting in circuit signal failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the top shell structure of the present invention;

[0030] Figure 3 It is a schematic diagram of the structure of the liquid exchange tube of the present invention;

[0031] Figure 4 It is a schematic diagram of the filter structure of the present invention;

[0032] Figure 5 It is a schematic diagram of the filter box structure of the present invention;

[0033] Figure 6 It is a schematic diagram of the structure of the side movable rod of the present invention;

[0034] Figure 7 It is a schematic diagram of the structure of the liquid exchange tube of the present invention;

[0035] Figure 8 It is a schematic diagram of the structure of the position-limiting side box of the present invention;

[0036] Fig. 9 It is a schematic diagram of the motor structure of the present invention;

[0037] Fig.10 It is a schematic diagram of the transmission fan structure of the present invention.

[0038] In the figure: 1, proportional valve body; 2, manual regulator; 3, top shell; 401, protective side box; 402, liquid exchange pipe; 403, connecting cylinder; 404, filter box; 405, filter screen; 406, connecting pipe; 501, motor body; 502, main transmission rod; 503, bottom bevel gear plate; 504, side bevel gear plate; 505, stirring blade; 506, first bearing plate; 507, first side fixed plate; 601, side movable rod; 602, side connecting plate; 603, cleaning brush; 701, storage box; 702, storage slot; 703, bottom slide rod; 704, side grip rod; 705, limit side box; 706, spring body ; 707, connecting frame; 708, pressing plate; 709, bottom limit plate; 801, main transmission gear disc; 802, transmission belt; 803, side transmission gear disc; 804, side transmission rod; 901, second bearing disc; 902, first fixing rod; 903, first bevel gear disc; 904, second bevel gear disc; 905, side connecting rod; 906, third bevel gear disc; 907, fourth bevel gear disc; 908, top connecting rod; 909, fifth bevel gear disc; 9010, sixth bevel gear disc; 9011, transmission fan; 9012, third bearing disc; 9013, third fixing plate; 9014, protective outer box; 9015, connecting frame. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Example 1

[0041] In this embodiment, Figure 1-Figure 10 Given, the present invention provides the following technical solutions:

[0042] A pilot-operated manual proportional valve comprises a proportional valve body 1, a manual regulator 2 is arranged on the top of the proportional valve body 1, a top shell 3 is fixedly connected to the top of the proportional valve body 1, a protective side box 401 is fixedly connected to one side of the proportional valve body 1, a liquid exchange tube 402 is fixedly connected to one side of the protective side box 401, a connecting tube 403 is fixedly connected to one end of the liquid exchange tube 402, a filter screen 405 is fixedly connected to one side of the connecting tube 403, a filter box 404 is fixedly connected to one side of the filter screen 405, a filter box 404 is fixedly connected to the inner side of the filter box 404, a connecting tube 406 is fixedly connected to the other side of the filter box 404, the other end of the connecting tube 406 is fixedly connected to one side of the proportional valve body 1, and a stirring blade 505 is arranged on the inner side of the filter screen 405.

[0043] It should be noted that after the fluid medium enters the protective side box 401, it will enter the liquid exchange tube 402, and the fluid medium will enter the connecting tube 403 along the liquid exchange tube 402. The fluid medium entering the connecting tube 403 will enter the filter box 404 and be filtered through the filter net 405 on the inside of the filter box 404 to filter out impurities and particles in the fluid medium. The filtered fluid medium will enter the proportional valve body 1 along the connecting tube 406, thereby reducing the blockage of the proportional valve body 1 and improving the use effect of the proportional valve body 1.

[0044] In this embodiment, the top of the protective side box 401 is fixedly connected to the protective outer box 9014, connecting frames 9015 are opened on both sides of the protective outer box 9014, the inner side of the protective outer box 9014 is fixedly connected to the motor body 501, the output shaft of the motor body 501 is fixedly connected to the main transmission rod 502, the bottom end of the main transmission rod 502 is fixedly connected to the bottom bevel gear plate 503, one side of the bottom bevel gear plate 503 is meshingly connected to the side bevel gear plate 504, and one side of the side bevel gear plate 504 is fixedly connected to one side of the stirring blade 505.

[0045] It should be noted that after the motor body 501 is started, it will drive the main transmission rod 502 to rotate, and the rotating main transmission rod 502 will drive the bottom bevel gear plate 503 to rotate. Through the engagement of the bottom bevel gear plate 503 and the side bevel gear plate 504, when the bottom bevel gear plate 503 rotates, the stirring blade 505 on one side of the side bevel gear plate 504 is driven to rotate synchronously, and the rotating stirring blade 505 will be supported on one side of the first side fixed plate 507 through the first bearing plate 506, and fixed to the inner side of the filter screen 405 through the first side fixed plate 507, so as to movably support the rotating stirring blade 505, thereby improving the rotation stability of the stirring blade 505. Through the rotation of the stirring blade 505, the fluid is pushed to move axially along the liquid exchange tube 402 and the connecting cylinder 403, which helps the fluid to pass through the pipeline faster and shortens the residence time of the fluid in the liquid exchange tube 402 and the connecting cylinder 403.

[0046] In this embodiment, one side of the stirring blade 505 is movably connected to the first bearing disk 506 , one side of the first bearing disk 506 is movably connected to the first side fixing plate 507 , and both ends of the first side fixing plate 507 are fixedly connected to the inner side of the filter screen 405 .

[0047] It should be noted that when the bottom beveled gear plate 503 rotates, the stirring blade 505 on one side of the side beveled gear plate 504 is driven to rotate synchronously, and the rotating stirring blade 505 is movably connected and supported on one side of the first side fixed plate 507 through the first bearing plate 506, and is fixed to the inner side of the filter screen 405 through the first side fixed plate 507, so as to movably support the rotating stirring blade 505 and improve the rotation stability of the stirring blade 505.

[0048] In this embodiment, a side movable rod 601 is fixedly connected to the other side of the side bevel gear plate 504 , one end of the side movable rod 601 is fixedly connected to a side connecting plate 602 , and one side of the side connecting plate 602 is movably connected to a cleaning brush 603 .

[0049] It should be noted that while the rotating side bevel gear plate 504 drives the stirring blade 505 to rotate, it will also synchronously drive the side movable rod 601 to rotate. The rotating side movable rod 601 will synchronously drive the side connecting plate 602 to rotate. The rotating side movable rod 601 will drive more cleaning brushes 603 to rotate along the surface of the filter mesh 405, and brush the particulate impurities attached to the surface of the filter mesh 405 during filtering, thereby reducing the adhesion and accumulation of impurity particles on the surface of the filter mesh 405, and improving the filtering effect of the filter mesh 405 on the fluid medium.

[0050] In this embodiment, a storage box 701 is movably connected to the inner side of the protective side box 401, a bottom slide bar 703 is fixedly connected to the bottom of the storage box 701, a storage groove 702 is opened on the inner side of the storage box 701, and a side handle 704 is fixedly connected to one side of the storage box 701.

[0051] It should be noted that the particulate impurities after brushing will fall into the storage groove 702 inside the storage box 701 and accumulate. When the proportional valve body 1 is closed, by moving the storage box 701 out of the outside of the protective side box 401, it is convenient to centrally clean the impurity particles accumulated in the storage groove 702, thereby reducing the workload of the operator.

[0052] In this embodiment, one side of the protective side box 401 is fixedly connected to the limiting side box 705, one side of the limiting side box 705 is provided with a connecting frame 707, the inner side of the limiting side box 705 is movably connected to a spring body 706, the bottom of the spring body 706 is movably connected to a pressing plate 708, and the bottom of the pressing plate 708 is fixedly connected to a bottom limiting plate 709.

[0053] It should be noted that by holding the pressing plate 708 and pulling it upward along the inner side of the connecting frame 707, the pressing plate 708 will be lifted up, which will drive the spring body 706 to produce compression deformation. After the compression deformation, the spring body 706 will drive the pressing plate 708 and the bottom limit plate 709 to rise along the inner side of the limit side box 705. At this time, by lifting the bottom limit plate 709, the storage box 701 loses its limit. At this time, holding the side handle 704 and pulling the storage box 701 will drive the bottom slide bar 703 to slide along the inner side of the protective side box 401, and drive the storage box 701 to move out of the outer side of the protective side box 401.

[0054] In this embodiment, a main transmission gear disc 801 is fixedly connected to the surface of the main transmission rod 502, a transmission belt 802 is meshed on one side of the main transmission gear disc 801, a side transmission gear disc 803 is meshed on one side of the transmission belt 802, and a side transmission rod 804 is fixedly connected to the bottom of the side transmission gear disc 803.

[0055] It should be noted that the rotating transmission belt 802 will drive the meshing side transmission gear disc 803 to rotate synchronously, and the rotating side transmission gear disc 803 will drive the side transmission rod 804 to rotate. After the motor body 501 is started, it will synchronously drive the main transmission rod 502 and the side transmission rod 804 to rotate. The bottom ends of the main transmission rod 502 and the side transmission rod 804 are provided with a bottom bevel gear disc 503, a side bevel gear disc 504 and a stirring blade 505, which can drive the two groups of stirring blades 505 to rotate.

[0056] In this embodiment, the top of the main transmission gear disc 801 is fixedly connected with the first bevel gear disc 903, one side of the first bevel gear disc 903 is meshedly connected with the second bevel gear disc 904, one side of the second bevel gear disc 904 is fixedly connected with the side connecting rod 905, one end of the side connecting rod 905 is fixedly connected with the third bevel gear disc 906, one side of the third bevel gear disc 906 is meshedly connected with the fourth bevel gear disc 907, the top of the fourth bevel gear disc 907 is fixedly connected with the top connecting rod 908, the top of the top connecting rod 908 is fixedly connected with the fifth bevel gear disc 909, one side of the fifth bevel gear disc 909 is meshedly connected with the sixth bevel gear disc 9010, one side of the sixth bevel gear disc 9010 is fixedly connected with a transmission fan 9011, one side of the transmission fan 9011 is movably connected with the third bearing disc 9012, one side of the third bearing disc 9012 is movably connected with the third fixed plate 9013, and one side of the third fixed plate 9013 is fixedly connected to the inner side of the protective outer box 9014.

[0057] It should be noted that the rotation of the main transmission rod 502 will synchronously drive the main transmission gear plate 801 to rotate, the rotating main transmission gear plate 801 will drive the transmission belt 802 to rotate, the rotating transmission belt 802 will drive the meshing side transmission gear plate 803 to rotate synchronously, the rotating side transmission gear plate 803 will drive the side transmission rod 804 to rotate, and after the motor body 501 is started, it will synchronously drive the main transmission rod 502 and the side transmission rod 804 to rotate, and the bottom ends of the main transmission rod 502 and the side transmission rod 804 are provided with a bottom bevel gear plate 503, a side bevel gear plate 504 and a stirring blade 505, which can drive the two groups of stirring blades 505 to rotate.

[0058] In this embodiment, the bottom of the fourth bevel gear plate 907 is fixedly connected to the first fixing rod 902 , the bottom of the first fixing rod 902 is movably connected to the second bearing plate 901 , and the bottom of the second bearing plate 901 is movably connected to the top of the protective side box 401 .

[0059] It should be noted that, during the rotation of the fourth beveled toothed plate 907, the first fixed rod 902 will be driven to rotate along the top of the second bearing plate 901. Through the movable connection between the second bearing plate 901 and the protective side box 401, the rotating first fixed rod 902 is supported, thereby improving the rotation stability of the fourth beveled toothed plate 907 and the top connecting rod 908.

[0060] Example 2

[0061] This embodiment 2 provides a pilot-operated manual proportional valve, which is used to further illustrate the working process or principle of the pilot-operated manual proportional valve provided in the above embodiment 1, and the details are as follows:

[0062] The pilot operated manual proportional valve comprises the following steps:

[0063] S1. First, before the fluid medium enters the proportional valve body 1 along the fluid exchange tube 402, it will enter the protective side box 401. After entering the protective side box 401, the fluid medium will enter the fluid exchange tube 402. The fluid medium will enter the connecting tube 403 along the fluid exchange tube 402. The fluid medium entering the connecting tube 403 will enter the filter box 404 and be filtered through the filter screen 405 inside the filter box 404 to filter the impurities and particles in the fluid medium. The filtered fluid medium will enter the proportional valve body 1 along the connecting tube 406, which reduces the blockage of the proportional valve body 1 and improves the use effect of the proportional valve body 1.

[0064] S2, by starting the motor body 501, the motor body 501 will drive the main transmission rod 502 to rotate, and the rotating main transmission rod 502 will drive the bottom bevel gear plate 503 to rotate, and through the meshing of the bottom bevel gear plate 503 and the side bevel gear plate 504, the stirring blade 505 on one side of the side bevel gear plate 504 will be driven to rotate synchronously when the bottom bevel gear plate 503 rotates, and the rotating stirring blade 505 will be supported on one side of the first side fixing plate 507 through the first bearing plate 506, and fixed to the inner side of the filter screen 405 through the first side fixing plate 507, so as to rotate the stirring blade 505. The movable support improves the rotation stability of the stirring blade 505. The rotation of the stirring blade 505 pushes the fluid to move axially along the liquid exchange tube 402 and the connecting tube 403, which helps the fluid to pass through the pipeline faster, shortens the residence time of the fluid in the liquid exchange tube 402 and the connecting tube 403, and at the same time, flushes the impurity particles contained in the fluid into the filter box 404, reduces the impurity particles staying in the liquid exchange tube 402 and the connecting tube 403, and reduces the accumulation of dirt in the liquid exchange tube 402 and the connecting tube 403, thereby improving the efficiency of fluid flow and improving the effect and stability of the use of the proportional valve body 1;

[0065] S3. The rotating side bevel gear disc 504 drives the stirring blade 505 to rotate, and at the same time, it drives the side movable rod 601 to rotate. The rotating side movable rod 601 drives the side connecting plate 602 to rotate synchronously. The rotating side movable rod 601 drives more cleaning brushes 603 to rotate along the surface of the filter screen 405, and brushes the particulate impurities attached to the surface of the filter screen 405 during filtering, thereby reducing the adhesion and accumulation of impurity particles on the surface of the filter screen 405, and improving the filtering effect of the filter screen 405 on the fluid medium. At the same time, the particulate impurities after brushing will fall into the storage groove 702 inside the storage box 701 and accumulate. When the proportional valve body 1 is closed, the cleaning brushes 603 are used to clean the impurities. After holding the pressing plate 708, pull it upward along the inner side of the connecting frame 707. After the pressing plate 708 is lifted, it will drive the spring body 706 to produce compression deformation. After the compression deformation is produced, the spring body 706 will drive the pressing plate 708 and the bottom limit plate 709 to rise along the inner side of the limit side box 705. At this time, after the bottom limit plate 709 is lifted, the storage box 701 loses its limit. At this time, holding the side handle 704 to pull the storage box 701 will drive the bottom slide bar 703 to slide along the inner side of the protective side box 401, and drive the storage box 701 to move out of the outer side of the protective side box 401, so as to facilitate the centralized cleaning of the impurities and particles accumulated in the storage groove 702, thereby reducing the workload of the operator;

[0066] S4. When the rotating motor body 501 drives the main transmission rod 502 to rotate, it will synchronously drive the first bevel gear plate 903 to rotate, the rotating first bevel gear plate 903 will drive the second bevel gear plate 904 to mesh and rotate, the rotation of the rotating second bevel gear plate 904 will synchronously drive the side connecting rod 905 to rotate, the rotated side connecting rod 905 will drive the third bevel gear plate 906 to rotate, the rotating third bevel gear plate 906 will drive the fourth bevel gear plate 907 to rotate, the rotating fourth bevel gear plate 907 will drive the top connecting rod 908 to rotate, and the rotation of the fourth bevel gear plate 907 will drive the first fixed rod 902 to rotate along the top of the second bearing plate 901, and the second bearing plate 901 is connected to the protective side box 401 through the movable connection, The rotating first fixed rod 902 is supported, which improves the rotation stability of the fourth bevel gear plate 907 and the top connecting rod 908. The rotation of 908 will drive the fifth beveled toothed disc 909 to rotate. Through the meshing of the fifth beveled toothed disc 909 and the sixth beveled toothed disc 9010, the sixth beveled toothed disc 9010 will be driven to rotate synchronously during the rotation of the fifth beveled toothed disc 909. During the rotation of the sixth beveled toothed disc 9010, the transmission fan 9011 will be driven to rotate along the connecting frame 9015. One side of the transmission fan 9011 is supported on one side of the third fixed plate 9013 through the active connection of the third bearing disc 9012. The transmission fan 9011 is supported by the active connection of the third bearing disc 9012, which improves the rotation stability of the transmission fan 9011. The rotating transmission fan 9011 will generate wind to blow toward the surfaces of the proportional valve body 1 and the top shell 3, thereby improving the air circulation performance of the surfaces of the proportional valve body 1 and the top shell 3, and reducing the situation in which the proportional valve body 1 and the top shell 3 are easily affected by moisture in a humid environment, resulting in circuit signal failure.

[0067] S6. When the motor body 501 drives the main transmission rod 502 to rotate, the rotation of the main transmission rod 502 will synchronously drive the main transmission gear plate 801 to rotate, the rotating main transmission gear plate 801 will drive the transmission belt 802 to rotate, the rotating transmission belt 802 will drive the meshing side transmission gear plate 803 to rotate synchronously, the rotating side transmission gear plate 803 will drive the side transmission rod 804 to rotate, after the motor body 501 is started, it will synchronously drive the main transmission rod 502 and the side transmission rod 804 to rotate, the bottom ends of the main transmission rod 502 and the side transmission rod 804 are provided with a bottom bevel gear plate 503, a side bevel gear plate 504 and a stirring blade 505, which can drive the two groups of stirring blades 505 to rotate.

[0068] It should be noted that the proportional valve body 1, manual regulator 2, top shell 3 and motor body 501 in the present invention are all prior arts, and corresponding models can be selected according to actual needs. The internal structure and operating principle of the above parts are also common knowledge of technicians in this field, and no further elaboration will be made on this.

[0069] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pilot-operated manual proportional valve, comprising a proportional valve body (1), characterized in that: A manual regulator (2) is provided on the top of the proportional valve body (1); a top shell (3) is fixedly connected to the top of the proportional valve body (1); a protective side box (401) is fixedly connected to one side of the proportional valve body (1); a liquid exchange pipe (402) is fixedly connected to one side of the protective side box (401); a connecting tube (403) is fixedly connected to one end of the liquid exchange pipe (402); a filter screen (405) is fixedly connected to one side of the connecting tube (403); a filter box (404) is fixedly connected to one side of the filter screen (405); a filter box (404) is fixedly connected to the inner side of the filter box (404); a connecting pipe (406) is fixedly connected to the other side of the filter box (404); the other end of the connecting pipe (406) is fixedly connected to one side of the proportional valve body (1); and a stirring blade (505) is provided on the inner side of the filter screen (405).

2. The pilot-operated manual proportional valve according to claim 1, characterized in that: The top of the protective side box (401) is fixedly connected to a protective outer box (9014), and connecting frames (9015) are provided on both sides of the protective outer box (9014). The inner side of the protective outer box (9014) is fixedly connected to a motor body (501), and the output shaft of the motor body (501) is fixedly connected to a main transmission rod (502), and the bottom end of the main transmission rod (502) is fixedly connected to a bottom beveled toothed disc (503), and one side of the bottom beveled toothed disc (503) is meshedly connected to a side beveled toothed disc (504), and one side of the side beveled toothed disc (504) is fixedly connected to one side of a stirring blade (505).

3. The pilot-operated manual proportional valve according to claim 2, characterized in that: One side of the stirring blade (505) is movably connected to a first bearing disk (506), one side of the first bearing disk (506) is movably connected to a first side fixing plate (507), and both ends of the first side fixing plate (507) are fixedly connected to the inner side of the filter screen (405).

4. The pilot-operated manual proportional valve according to claim 3, characterized in that: The other side of the side bevel gear disc (504) is fixedly connected to a side movable rod (601), one end of the side movable rod (601) is fixedly connected to a side connecting plate (602), and one side of the side connecting plate (602) is movably connected to a cleaning brush (603).

5. The pilot-operated manual proportional valve according to claim 4, characterized in that: The inner side of the protective side box (401) is movably connected to a storage box (701), the bottom of the storage box (701) is fixedly connected to a bottom slide bar (703), the inner side of the storage box (701) is provided with a storage groove (702), and one side of the storage box (701) is fixedly connected to a side grip bar (704).

6. The pilot-operated manual proportional valve according to claim 5, characterized in that: One side of the protective side box (401) is fixedly connected to a limit side box (705), one side of the limit side box (705) is provided with a connection frame (707), the inner side of the limit side box (705) is movably connected to a spring body (706), the bottom of the spring body (706) is movably connected to a pressing plate (708), and the bottom of the pressing plate (708) is fixedly connected to a bottom limit plate (709).

7. The pilot-operated manual proportional valve according to claim 6, characterized in that: A main transmission gear disc (801) is fixedly connected to the surface of the main transmission rod (502), a transmission toothed belt (802) is meshedly connected to one side of the main transmission gear disc (801), a side transmission gear disc (803) is meshedly connected to one side of the transmission toothed belt (802), and a side transmission rod (804) is fixedly connected to the bottom of the side transmission gear disc (803).

8. The pilot-operated manual proportional valve according to claim 7, characterized in that: The top of the main transmission gear disc (801) is fixedly connected to a first bevel gear disc (903); one side of the first bevel gear disc (903) is meshedly connected to a second bevel gear disc (904); one side of the second bevel gear disc (904) is fixedly connected to a side connecting rod (905); one end of the side connecting rod (905) is fixedly connected to a third bevel gear disc (906); one side of the third bevel gear disc (906) is meshedly connected to a fourth bevel gear disc (907); the top of the fourth bevel gear disc (907) is fixedly connected to a top connecting rod (908); The top of the connecting rod (908) is fixedly connected to a fifth beveled toothed disc (909), one side of the fifth beveled toothed disc (909) is meshingly connected to a sixth beveled toothed disc (9010), one side of the sixth beveled toothed disc (9010) is fixedly connected to a transmission fan (9011), one side of the transmission fan (9011) is movably connected to a third bearing disc (9012), one side of the third bearing disc (9012) is movably connected to a third fixed plate (9013), and one side of the third fixed plate (9013) is fixedly connected to the inner side of the protective outer box (9014).

9. The pilot-operated manual proportional valve according to claim 8, characterized in that: The bottom of the fourth bevel gear plate (907) is fixedly connected to the first fixed rod (902), the bottom of the first fixed rod (902) is movably connected to the second bearing plate (901), and the bottom of the second bearing plate (901) is movably connected to the top of the protective side box (401).

10. A method for using a pilot-operated manual proportional valve, applied to the pilot-operated manual proportional valve according to any one of claims 1 to 9, characterized in that: The steps include: S1, before the fluid medium enters the proportional valve body (1) along the fluid exchange pipe (402), it will enter the protective side box (401), after entering the protective side box (401), it will enter the fluid exchange pipe (402), the fluid medium will enter the connecting tube (403) along the fluid exchange pipe (402), the fluid medium entering the connecting tube (403) will enter the filter box (404), and pass through the surface of the filter screen (405) inside the filter box (404); S2, by starting the motor body (501), the motor body (501) will drive the main transmission rod (502) to rotate, and the rotating main transmission rod (502) will drive the bottom bevel gear plate (503) to rotate, and through the engagement between the bottom bevel gear plate (503) and the side bevel gear plate (504), the stirring blade (505) on one side of the side bevel gear plate (504) can be driven to rotate synchronously when the bottom bevel gear plate (503) rotates, and the rotating stirring blade (505) is movably connected and supported on one side of the first side fixing plate (507) through the first bearing plate (506); S3. The rotating side bevel gear disc (504) drives the stirring blade (505) to rotate, and at the same time, it drives the side movable rod (601) to rotate. The rotating side movable rod (601) drives the side connecting plate (602) to rotate. The rotating side movable rod (601) drives more cleaning brushes (603) to rotate along the surface of the filter screen (405). At the same time, particulate matter and impurities fall into the storage groove (702) inside the storage box (701) and accumulate. When the proportional valve body (1) is closed, at this time, by holding the pressing plate (708) and moving along the inner side of the connecting frame (707), the cleaning brush (603) is moved. When pulled upward, the pressing plate (708) is lifted and the spring body (706) is compressed and deformed. The compressed and deformed spring body (706) drives the pressing plate (708) and the bottom limit plate (709) to rise along the inner side of the limit side box (705). At this time, after the bottom limit plate (709) is lifted, the storage box (701) loses its limit. At this time, holding the side handle (704) and pulling the storage box (701) will drive the bottom slide bar (703) to slide along the inner side of the protective side box (401) and drive the storage box (701) to move out of the outer side of the protective side box (401); S4. When the rotating motor body (501) drives the main transmission rod (502) to rotate, it will synchronously drive the first bevel gear plate (903) to rotate. The rotating first bevel gear plate (903) will drive the second bevel gear plate (904) to rotate in meshing. The rotation of the rotating second bevel gear plate (904) will synchronously drive the side connecting rod (905) to rotate. The rotated side connecting rod (905) will drive the third bevel gear plate (906) to rotate. The rotating third bevel gear plate (906) will drive the fourth bevel gear plate (907) to rotate. The rotating fourth bevel gear plate (907) will drive the top connecting rod (908) to rotate. In the process of the fourth bevel gear plate (907) rotating, it will drive the first fixed rod (902) to rotate along the first fixed rod (902). The top of the second bearing disk (901) rotates, and the top connecting rod (908) rotates, which drives the fifth beveled toothed disk (909) to rotate. The fifth beveled toothed disk (909) engages with the sixth beveled toothed disk (9010), and during the rotation of the fifth beveled toothed disk (909), the sixth beveled toothed disk (9010) is driven to rotate synchronously. During the rotation of the sixth beveled toothed disk (9010), the transmission fan (9011) is driven to rotate along the connecting frame (9015), and one side of the transmission fan (9011) is supported on one side of the third fixed plate (9013) through the movable connection of the third bearing disk (9012), and the transmission fan (9011) is supported through the movable connection of the third bearing disk (9012); S6. When the motor body (501) drives the main transmission rod (502) to rotate, the rotation of the main transmission rod (502) will synchronously drive the main transmission gear plate (801) to rotate, the rotating main transmission gear plate (801) will drive the transmission belt (802) to rotate, the rotating transmission belt (802) will drive the meshing side transmission gear plate (803) to rotate synchronously, the rotating side transmission gear plate (803) will drive the side transmission rod (804) to rotate, and after the motor body (501) is started, it will synchronously drive the main transmission rod (502) and the side transmission rod (804) to rotate.

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