Manual servo rotary valve and use method thereof

Abstract

The invention relates to the technical field of manual servo rotary valves, in particular to a manual servo rotary valve and a using method thereof.The manual servo rotary valve comprises a servo rotary valve body, an upper sleeve cover plate is fixedly installed at the upper end of the servo rotary valve body, and a P-port air inlet hole is formed in the inner wall of one side of the servo rotary valve body; an A port air outlet and a B port air outlet are formed in the side, away from the P port air inlet, of the servo rotary valve body. Forward and reverse rotation of the gear piece is achieved by manually operating the rotating piece, staggered movement of the two extending pieces and the blocking pieces is achieved, accurate reversing of airflow channels of the A port air outlet and the B port air outlet is achieved, meanwhile, a buffer space can be provided for the portion between gas guided into the P port air inlet and the exhaust port, direct impact of the valve element assembly caused by fast gas is avoided, and the service life of the valve element assembly is prolonged. The problem that the valve element is likely to be impacted and is not stable enough due to the fact that fluid flows too fast is further solved, the service life of the manual servo rotary valve is prolonged, and the operation performance of the manual servo rotary valve is improved.

Description

Technical Field

[0001] The invention relates to the technical field of manual servo rotary valves, in particular to a manual servo rotary valve and a use method thereof. Background Art

[0002] Servo control technology is a technology that achieves precise control through a feedback mechanism. It can adjust the output signal according to the input signal, thereby achieving precise control of the system. A rotary valve is a mechanical device that changes the open and closed state of a fluid channel by rotating parts (such as a rotating baffle), and the manual servo rotary valve mainly involves servo control technology and the design principle of a rotary valve. Combining servo control technology with a rotary valve can achieve precise, fast and stable control of fluid flow; connect the R port of the rotary valve to the air source, and connect the A port and the B port to the two ends of the cylinder respectively. The manual reversing valve is a directional control valve operated by a manual lever, which plays a role of reversing (changing the direction of airflow) and switching (connecting or blocking airflow) in the hydraulic system, thereby achieving extension and retraction of the cylinder.

[0003] In the prior art, there is a manual servo reversing valve for hydraulic presses with a publication number of CN219282128U, which belongs to the field of hydraulic presses and includes a valve body, a sliding valve is arranged in the valve body, one end of the valve body is connected to a flange through a first hexagon socket head screw, a rotating handle is arranged on the flange, the rotating handle is connected to a bearing frame through a first pin shaft, a cotter pin and a bearing frame, the side walls on both sides of the valve body are respectively provided with a first welded end straight-through pipe joint and a second welded end straight-through pipe joint, the other end of the valve body is connected to an end cover through a fourth hexagon socket head screw, the side wall of the valve body is provided with a third hexagon socket head screw and a fifth hexagon socket head screw, and the side wall of the valve body is provided with a second pin shaft. A direct-acting reversing slide valve is provided in which the valve core is axially moved by rotating the handle to switch the oil circuit. The control valve core is restored to the normal position by means of a press reset spring, and a relief valve can be superimposed and installed on the oil inlet bypass. The structure is simple, the pressure loss is small, and the response is fast.

[0004] In order to solve the problems of complex structure and large pressure loss of the existing reversing valve, the existing technology adopts the method of rotating the handle to make the valve core move axially so as to switch the oil circuit.

[0005] However, in actual use, the existing valve core has a single structure. Once the fluid flows too quickly, it is very likely to cause impact on the valve core, causing the valve core to be unstable. In addition, the gas introduced into the gas source inlet hole is directly discharged through the gas outlet hole. Once impurities appear in the gas source, it will not only cause blockage of the gas source inlet hole for a long time, but also easily cause damage to the gas outlet connecting the cylinder, resulting in unstable flow channel and damage to the hand-turn valve and the connecting cylinder parts.

[0006] Therefore, the present invention proposes a manual servo rotary valve and a method of using the same to solve the problem that the existing valve core has a single structure and is likely to cause impact on the valve core once the fluid flows too quickly, resulting in the valve core being unstable. The valve core is designed to be two sets of staggered valve plates, which can achieve precise switching of the A and B air outlets through manual operation. At the same time, the two sets of staggered valve cores can avoid impact on the valve core caused by excessive fluid speed, and achieve filtering of the gas entering the P port to avoid blockage of various components. Summary of the invention

[0007] In view of the deficiencies in the prior art, an object of the present invention is to provide a manual servo rotary valve and a method of using the same to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a manual servo rotary valve, comprising a servo rotary valve body, an upper cover plate fixedly installed on the upper end of the servo rotary valve body, a P-port air inlet hole is arranged on the inner wall of one side of the servo rotary valve body, an A-port air outlet hole and a B-port air outlet hole are arranged on the side of the servo rotary valve body away from the P-port air inlet hole, a rotating body is movably connected to the upper end of the upper cover plate, a connecting rod body 1 is fixedly connected to the interior of the rotating body, and a threaded connection is arranged on the inner wall of the upper end of the connecting rod body 1. There is a rotating handle that passes through the inner wall of the rotating body, the lower end of the connecting rod body one is fixedly connected to the connecting rod body two, the outer surface of the lower end of the connecting rod body two is provided with a gear part, and valve core assemblies are respectively provided on both sides of the gear part. The valve core assembly includes a limited support back plate, a protruding part and a closing part. The protruding part and the closing part are respectively provided in two groups and are obliquely distributed relative to the connecting rod body two. The outside of the valve core assembly is provided with staggered through pipes, and the staggered through pipes respectively pass through the inner walls of the A port air outlet and the B port air outlet.

[0009] Preferably, the gear part includes a central sector-shaped half-tooth and a side sector-shaped half-tooth, the central inner surfaces of the central sector-shaped half-tooth and the side sector-shaped half-tooth are respectively fixedly connected to the outer surface of the connecting rod body 2, the side sector-shaped half-tooth is provided with two groups and is symmetrically distributed about the horizontal center line of the central sector-shaped half-tooth, and the tooth surfaces of the central sector-shaped half-tooth and the side sector-shaped half-tooth are relatively distributed.

[0010] Preferably, the extending member includes an extending rod, a tooth plate, a cylindrical connecting tube and a valve core plate, one side of the extending rod is set as a plane, the tooth plate is fixedly installed on the plane of the extending rod, one end of the extending rod is fixedly connected to the cylindrical connecting tube, the cylindrical connecting tube has a hollow tubular structure, and a guide groove is provided on the inner surface of the cylindrical connecting tube.

[0011] Preferably, the output end of the columnar connecting tube is fixedly connected to a conical flow guide cover, and the conical flow guide cover has a conical cover body structure. The two sides of the columnar connecting tube are fixedly connected to fixing bars, and the fixing bars are fixedly installed on the inner surface of the valve core plate one. The columnar connecting tube, the conical flow guide cover and the valve core plate one are coaxially distributed.

[0012] Preferably, sealing slots are evenly provided on the inner wall of one side of the valve core plate one, and a valve core filter plate is provided on the other side of the valve core plate one.

[0013] Preferably, the inner cavity of the valve core plate 1 is provided with a recoil assembly, and the recoil assembly includes a curved buffer elastic wire and a movable impact plate, and the curved buffer elastic wire and the movable impact plate are provided in six groups, each group of the curved buffer elastic wire is correspondingly connected to a group of the movable impact plate, one end of the curved buffer elastic wire is fixedly connected to the side wall of the valve core plate 1, the other end of the curved buffer elastic wire is hinged to one end of the movable impact plate, and one end of the movable impact plate is rotatably connected to the inner wall of the valve core plate 1 through a hinge.

[0014] Preferably, the blocking member includes an arc-shaped blocking rod, a tooth plate and a valve core plate. The side-view cross-section of the arc-shaped blocking rod presents a "C"-shaped structure. One side of the arc-shaped blocking rod is set as a curved surface. The outer surface of the curved surface is slidingly connected to the inner surface of the limit support back plate. The tooth plate is fixedly installed on the side of the arc-shaped blocking rod away from the limit support back plate, and the tooth plate is adapted to mesh with the outer surface of the side fan-shaped half-tooth.

[0015] Preferably, the inner surface of the arc-shaped blocking rod is slidably connected to the curved surface of the extending rod, one end of the arc-shaped blocking rod is fixedly connected to a connecting column, the other end of the connecting column is fixedly connected to a valve core plate 2, the valve core plate 2 is an "*"-shaped plate structure, and the outer surface of the valve core plate 2 is movably engaged with the inner surface of the sealing slot.

[0016] Preferably, two groups of the staggered through tubes are provided, and the two groups of the staggered through tubes are respectively fixedly installed on the inner walls of the A-port air outlet and the B-port air outlet, and the staggered through tubes pass through the inner wall of the P-port air inlet.

[0017] The method of using the manual servo rotary valve includes the following steps: Step 1: Connect the P-port air inlet of the rotary valve to the air source, and connect the A-port air outlet and the B-port air outlet of the rotary valve to the two ends of the external cylinder respectively. Hold the rotating handle on the rotating body and control the extension and retraction of the cylinder by rotating the handle. Step 2: By controlling the rotation angle of the handle, the interlacing degree between the protruding piece and the blocking piece is adjusted. When the handle is rotated, the protruding piece and the blocking piece will move horizontally and gradually open or close the air outlet channel through the adaptive engagement between them; Step 3: When the handle is rotated clockwise, the cylindrical connecting pipe moves horizontally to the right, and with the cooperation of the fixing strip, the conical guide cover is connected to the valve core plate; Step 4: Then the valve core plate 1 moves to the right, the blocking slot is separated from the valve core plate 2, and the blocking slot is in an open state. At this time, the air source enters the inner cavity of the valve core plate 1 through the blocking slot, and the air source is buffered and filtered and then discharged alternately through the A port outlet and the B port outlet.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The manual servo rotary valve and the method of using the same proposed in the present invention realize the forward and reverse rotation of the gear part by manually operating the rotating part, realize the staggered activities of the two groups of protruding parts and the blocking parts, accurately switch the air flow channels of the A-port air outlet and the B-port air outlet, and provide a buffer space between the gas introduced into the P-port air inlet and the exhaust port, avoiding direct impact of the valve core assembly caused by rapid gas flow, further solving the problem that the valve core is likely to be impacted by too rapid circulation of the fluid, resulting in insufficient stability of the valve core, thereby extending the service life and operating performance of the manual servo rotary valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the front and side three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the back three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of the top view structure of the present invention; Figure 4 It is a front structural schematic diagram of the present invention; Figure 5 It is a schematic diagram of the bottom structure of the servo rotary valve body of the present invention; Figure 6 It is a schematic diagram of the three-dimensional cross-sectional structure of the present invention; Figure 7 It is a schematic diagram of the servo rotary valve body and its internal cross-sectional structure of the present invention; Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged structure at point A; Fig. 9 It is a schematic diagram of the connection structure between the connecting rod body 2 and the gear member of the present invention; Fig.10 It is a schematic diagram of the partial connection structure between the connecting rod body 2 and the gear member of the present invention; Fig.11 It is a structural schematic diagram of the valve core plate 2 being separated from the valve core plate 1 of the present invention; Fig.12 It is a structural schematic diagram of a single group of extension members of the present invention; Fig.13It is a schematic diagram of a half-section structure of the extension member of the present invention; Fig.14 It is a side view structural schematic diagram of the valve core plate 1 and the recoil assembly of the present invention; Fig.15 It is a structural schematic diagram of the recoil assembly of the present invention; Fig.16 It is a flow chart of the present invention.

[0020] In the figure: 1. servo rotary valve body; 2. upper cover plate; 3. rotating body; 31. rotating handle; 32. connecting rod body 1; 321. sealing plate; 33. connecting rod body 2; 331. central fan-shaped half teeth; 332. side fan-shaped half teeth; 4. P port air inlet; 5. A port air outlet; 6. B port air outlet; 7. staggered through pipe; 8. limit support back plate; 81. extension piece; 811. extension rod; 812. tooth plate 1; 813. cylindrical connecting pipe; 8130. guide groove; 8131. conical guide cover; 814. valve core plate 1; 8140. blocking slot; 8141. valve core filter plate; 81411. curved buffer elastic wire; 81412. movable impact plate; 82. blocking piece; 821. arc-shaped blocking rod; 822. tooth plate 2; 823. valve core plate 2. DETAILED DESCRIPTION

[0021] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, and are not used to limit 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.

[0022] For example, see Figure 1-16The present invention provides a technical solution: a manual servo rotary valve, comprising a servo rotary valve body 1, an upper cover plate 2 is fixedly installed on the upper end of the servo rotary valve body 1, a P-port air inlet 4 is arranged on the inner wall of one side of the servo rotary valve body 1, an A-port air outlet 5 and a B-port air outlet 6 are arranged on the side of the servo rotary valve body 1 away from the P-port air inlet 4, a rotating body 3 is movably connected to the upper end of the upper cover plate 2, a connecting rod body 1 32 is fixedly connected to the interior of the rotating body 3, a rotating handle 31 that passes through the inner wall of the rotating body 3 is threadedly connected on the upper end inner wall of the connecting rod body 1 32, a connecting rod body 2 33 is fixedly connected to the lower end of the connecting rod body 2 33, a gear part is arranged on the outer surface of the lower end of the connecting rod body 2 33, valve core components are respectively arranged on both sides of the gear part, the valve core components include a limited support back plate 8, a protruding part 81 and a closing part 82, the protruding part 81 and the closing part 82 are respectively arranged in two groups and are obliquely distributed relative to the connecting rod body 2 33, and the valve core components The outside is provided with a staggered through pipe 7, which passes through the inner wall of the A port air outlet 5 and the B port air outlet 6 respectively; two groups of staggered through pipes 7 are provided, and the two groups of staggered through pipes 7 are fixedly installed on the inner wall of the A port air outlet 5 and the B port air outlet 6 respectively, and the staggered through pipes 7 pass through the inner wall of the P port air inlet 4; a sealing plate 321 is fixedly installed at the connecting position of the connecting rod body 1 32 and the connecting rod body 2 33, and a sealing rubber ring 1 is sleeved on the outer surface of the sealing plate 321, and the sealing plate 321 The outer surface is movably connected to the upper inner wall of the upper cover plate 2; the gear member includes a central sector-shaped half tooth 331 and a side sector-shaped half tooth 332, the central inner surfaces of the central sector-shaped half tooth 331 and the side sector-shaped half tooth 332 are respectively fixedly connected to the outer surface of the connecting rod body 2 33, and the side sector-shaped half teeth 332 are provided with two groups and are symmetrically distributed about the horizontal midline of the central sector-shaped half teeth 331, and the tooth surfaces of the central sector-shaped half teeth 331 and the side sector-shaped half teeth 332 are relatively distributed; In this embodiment, the P-port air inlet 4 of the rotary valve is connected to the air source, the A-port air outlet 5 and the B-port air outlet 6 are respectively connected to the two ends of the external cylinder, and the rotating handle 31 and the rotating body 3 are used as a directional control valve operated by a manual lever, which plays a role of reversing (changing the direction of air flow) and switching (connecting or blocking air flow) in the hydraulic system, thereby realizing the extension and retraction of the cylinder. Specifically for the reversing operation, the operator holds the rotating handle 31 and rotates it 90° clockwise. At this time, the rotating handle 31 drives the connecting rod body 1 32 and the connecting rod body 2 33 to rotate as a whole. At this time, the rotating part rotates with the connecting rod body 2 33, and the central sector-shaped half tooth 331 first contacts a protruding part 81 on the side close to the P-port air inlet 4, and the side sector-shaped half tooth 332 contacts the closing part 82 on the side away from the P-port air inlet 4. When the central sector-shaped half tooth 331 rotates 90° clockwise, the protruding part 81 moves to the right as a whole and The sealing plate 321 is separated from the closing piece 82, and at the same time, the closing piece 82 on the other side and the extending piece 81 complete the blocking. Under such operation, the input port of the B-port air outlet 6 is opened, and the input port of the A-port air outlet 5 is closed. Conversely, when the input port of the B-port air outlet 6 is closed, the input port of the A-port air outlet 5 is opened, and the output port is output to one end of the cylinder, thereby realizing the extension of one end of the cylinder. It should be noted that the sealing plate 321 is installed between the connecting rod body 1 32 and the connecting rod body 2 33, and is just distributed in the middle position of the upper cover plate 2. The sealing rubber ring 1 sleeved on the surface of the connecting rod body 1 32 fits tightly with the inner wall of the upper cover plate 2, thereby enhancing the support of the connecting rod body 1 32 and the inner wall of the upper cover plate 2 during rotation, and the setting of the connecting rod body 1 32 can ensure the sealing of the gas in the inner cavity of the servo rotary valve body 1, and avoid the gas entering the upper cavity of the upper cover plate 2 and affecting the rotating body 3 in the event of gas leakage due to an accident.

[0023] Embodiment 2, refer to the attached Figure 1-16On the basis of the first embodiment, in order to realize the interlacing between the extension member 81 and the blocking member 82 so that the gas source is discharged slowly, the present embodiment further proposes that: the extension member 81 includes an extension rod 811, a tooth plate 812, a columnar connecting pipe 813 and a valve core plate 814, one side of the extension rod 811 is set as a plane, the tooth plate 812 is fixedly installed on the plane of the extension rod 811, one end of the extension rod 811 is fixedly connected to the columnar connecting pipe 813, the columnar connecting pipe 813 is a hollow tubular structure, and the inner surface of the columnar connecting pipe 813 is The cylindrical connecting pipe 813 is provided with a guide groove 8130; the output end of the cylindrical connecting pipe 813 is fixedly connected with a conical guide cover 8131, and the conical guide cover 8131 is a conical cover structure. The two sides of the cylindrical connecting pipe 813 are fixedly connected with fixing strips, and the fixing strips are fixedly installed on the inner surface of the valve core plate 814. The cylindrical connecting pipe 813, the conical guide cover 8131 and the valve core plate 814 are coaxially distributed; the inner wall of one side of the valve core plate 814 is evenly provided with a plugging slot 8140, and the other side of the valve core plate 814 is provided with a valve core filter plate 81 41; the blocking member 82 includes an arc-shaped blocking rod 821, a tooth plate 822 and a valve core plate 823. The side view of the arc-shaped blocking rod 821 is a "C"-shaped structure. One side of the arc-shaped blocking rod 821 is set as a curved surface. The outer surface of the curved surface is slidably connected with the inner surface of the limit support back plate 8. The tooth plate 822 is fixedly installed on the side of the arc-shaped blocking rod 821 away from the limit support back plate 8, and the tooth plate 822 is adapted to mesh with the outer surface of the side fan-shaped half tooth 332; the inner surface of the arc-shaped blocking rod 821 is connected to the protruding The curved surface of the rod 811 is slidably connected, one end of the arc-shaped blocking rod 821 is fixedly connected to a connecting column, and the other end of the connecting column is fixedly connected to a valve core plate 823, the valve core plate 823 is a "*"-shaped plate structure, and the outer surface of the valve core plate 823 is movably engaged with the inner surface of the blocking slot 8140; the valve core plate 1 814 is a cylindrical hollow plate, and the valve core plate 2 823 is an *-shaped embedded plate. When the valve core plate 2 823 and the valve core plate 1 814 are completely combined, a closed cylindrical valve core is formed, and the reversing blocking of the staggered through pipe 7 is realized; In this embodiment, refer to Figure 7-Figure 8As shown, the extending rod 811 is distributed on the inner side of the arc-shaped blocking rod 821, and the outer curved surface of the extending rod 811 is limited and fitted with the inner annular surface of the arc-shaped blocking rod 821. The arc-shaped blocking rod 821 accommodates the extending rod 811 while ensuring the stable limitation of the extending rod 811 when it moves horizontally. When the central sector-shaped half-tooth 331 is adapted and meshed with the surface of the tooth plate 812, the extending rod 811 and the columnar connecting tube 813 are horizontally moved as a whole by the double limitation of the tooth meshing and the arc-shaped blocking rod 821. When the handle 31 is rotated clockwise, the columnar connecting tube 813 moves horizontally to the right, and when the fixing bar is matched, the connecting tube 813 moves horizontally to the right. When the handle 31 is closed, the conical guide cover 8131 is connected to the valve core plate 1 814, and the valve core plate 1 814 moves to the right. At this time, the blocking slot 8140 is separated from the valve core plate 2 823, and the blocking slot 8140 is in an open state. At this time, the gas source enters the inner cavity of the valve core plate 1 814 through the blocking slot 8140, so that the gas is filtered first and then discharged. At this time, the opening size of the blocking slot 8140 is controlled by controlling the rotation angle of the rotating handle 31. The gas source gas passes through the staggered valve core components to achieve the purpose of buffering, thereby avoiding damage to the valve core components and their rotary valves caused by excessive gas source flow rate; It is worth noting that the columnar connecting pipe 813 is designed as a hollow columnar structure. The guide groove 8130 will exist in a part of the gas and enter the interior of the valve core plate 814 through the conical guide cover 8131. The conical guide cover 8131 is configured as a conical cover body structure as a whole to achieve a sudden narrowing of the central flow channel. According to the Bernoulli principle, the smaller the middle flow channel, the faster the flow rate will be. This ensures that even a small part of the gas entering the guide groove 8130 can be discharged to the valve core plate 814 in time, so that the gas source gas can be purified before being discharged.

[0024] Embodiment 3, refer to the attached Figure 1-16 On the basis of the second embodiment, in order to achieve the sealing between the valve core plate 814 and the staggered tube 7, the present embodiment further adds: the outer surface of the valve core plate 814 is sleeved with a sealing rubber ring 2, and the outer surface of the sealing rubber ring 2 is movably engaged with the inner surface of the staggered tube 7. The reason for sleeved with the sealing rubber ring 2 on the outside of the valve core plate 814 is to ensure the leakage of the fluid when a seal is formed between the valve core plate 2 823 and the valve core plate 814, so as to enhance the overall sealing of the valve core assembly; and it also satisfies the effect of filtering the fluid through the valve core filter plate 8141, avoiding the fluid from flowing out through the gap between the valve core plate 814 and the staggered tube 7, causing the gas introduced into the P-port air inlet 4 to be directly discharged to the A-port air outlet 5 and the B-port air outlet 6 without being filtered.

[0025] Embodiment 4, refer to the attached Figure 1-16On the basis of the third embodiment, in order to achieve efficient filtration of the gas in the inner cavity of the valve core plate 814, the present embodiment further proposes: the inner cavity of the valve core plate 814 is provided with a recoil assembly, the recoil assembly includes a curved buffer elastic wire 81411 and a movable impact plate 81412, six groups of the curved buffer elastic wire 81411 and the movable impact plate 81412 are provided, each group of the curved buffer elastic wire 81411 is correspondingly connected to a group of movable impact plates 81412, one end of the curved buffer elastic wire 81411 is fixedly connected to the side wall of the valve core plate 814, the other end of the curved buffer elastic wire 81411 is hinged to one end of the movable impact plate 81412, and one end of the movable impact plate 81412 is rotatably connected to the inner wall of the valve core plate 814 through a hinge; In this embodiment, refer to Figure 13-Figure 15 As shown, the gas discharged into the valve core plate 814 through the conical guide cover 8131 is discharged to the valve core filter plate 8141. Due to the special shape of the conical guide cover 8131, the ejected gas speed is faster. Then, at this time, part of the gas with a faster flow rate is discharged through the filter holes on the surface of the valve core filter plate 8141, and part of the gas hits the inner wall of the valve core filter plate 8141. The impacted gas will rebound to the inner surface of the movable impact plate 81412. Under the action of the recoil force, the movable impact plate 81412 intercepts the gas. At this time, the movable impact plate 81412 is shaped The movable impact plate 81412 is supported by the movable impact plate 81412, and the movable impact plate 81412 and the valve core plate 814 are cushioned by the movable impact plate 81412. The cushioned surface of the movable impact plate 81412 and the valve core plate 814 are cushioned by the movable impact plate 81412 and the valve core plate 814, thereby preventing the gas from impacting and damaging the valve core too quickly and extending the overall service life.

[0026] Embodiment 5, refer to the attached Figure 1-16 Based on the fourth embodiment, the present invention further provides a method for using a manual servo rotary valve, comprising the following steps: Step 1: Connect the P-port air inlet 4 of the rotary valve to the air source, and connect the A-port air outlet 5 and the B-port air outlet 6 of the rotary valve to the two ends of the external cylinder respectively, hold the rotating handle 31 on the rotating body 3, and control the extension and retraction of the cylinder by rotating the handle 31; Step 2: By controlling the rotation angle of the handle 31, the degree of interlacing between the protruding member 81 and the blocking member 82 is adjusted. When the handle is rotated, the protruding member 81 and the blocking member 82 will move horizontally and gradually open or close the air outlet through the adaptive engagement between them; Step 3: When the handle 31 is rotated clockwise, the cylindrical connecting pipe 813 moves horizontally to the right, and with the cooperation of the fixing bar, the conical guide cover 8131 and the valve core plate 1 814 are connected; Step 4, then the valve core plate 1 814 moves to the right, the blocking slot 8140 is separated from the valve core plate 2 823, and the blocking slot 8140 is in an open state. At this time, the air source enters the inner cavity of the valve core plate 1 814 through the blocking slot 8140, and the air source is buffered and filtered and then discharged alternately through the A port air outlet 5 and the B port air outlet 6.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A manual servo rotary valve, comprising a servo rotary valve body (1), an upper cover plate (2) being fixedly mounted on the upper end of the servo rotary valve body (1), a P-port air inlet (4) being arranged on the inner wall of one side of the servo rotary valve body (1), and an A-port air outlet (5) and a B-port air outlet (6) being arranged on the side of the servo rotary valve body (1) away from the P-port air inlet (4), characterized in that: The upper end of the upper cover plate (2) is movably connected to a rotating body (3), the interior of the rotating body (3) is fixedly connected to a connecting rod body 1 (32), the upper end inner wall of the connecting rod body 1 (32) is threadedly connected to a rotating handle (31) that penetrates the inner wall of the rotating body (3), the lower end of the connecting rod body 1 (32) is fixedly connected to a connecting rod body 2 (33), the lower end outer surface of the connecting rod body 2 (33) is provided with a gear part, and valve core assemblies are respectively provided on both sides of the gear part, the valve core assembly comprises a limited support back plate (8), a protruding part (81) and a closing part (82), the protruding part (81) and the closing part (82) are respectively provided in two groups and are obliquely distributed with respect to the connecting rod body 2 (33), and the outside of the valve core assembly is provided with a staggered through pipe (7), the staggered through pipe (7) respectively penetrates the inner walls of the A-port air outlet (5) and the B-port air outlet (6).

2. The manual servo rotary valve according to claim 1, characterized in that: The gear member comprises a central sector-shaped half tooth (331) and a side sector-shaped half tooth (332); the central inner surfaces of the central sector-shaped half tooth (331) and the side sector-shaped half tooth (332) are respectively fixedly connected to the outer surface of the second connecting rod body (33); two groups of the side sector-shaped half teeth (332) are arranged and are symmetrically distributed about the horizontal midline of the central sector-shaped half teeth (331); the tooth surfaces of the central sector-shaped half teeth (331) and the side sector-shaped half teeth (332) are relatively distributed.

3. The manual servo rotary valve according to claim 2, characterized in that: The extending member (81) comprises an extending rod (811), a tooth plate (812), a columnar connecting pipe (813) and a valve core plate (814); one side of the extending rod (811) is arranged as a plane; the tooth plate (812) is fixedly mounted on the plane of the extending rod (811); one end of the extending rod (811) is fixedly connected to the columnar connecting pipe (813); the columnar connecting pipe (813) is in a hollow tubular structure; and a guide groove (8130) is arranged on the inner surface of the columnar connecting pipe (813).

4. The manual servo rotary valve according to claim 3, characterized in that: The output end of the columnar connecting tube (813) is fixedly connected to a conical flow guide cover (8131), and the conical flow guide cover (8131) is a conical cover structure. The two sides of the columnar connecting tube (813) are fixedly connected to fixing strips, and the fixing strips are fixedly installed on the inner surface of the valve core plate (814). The columnar connecting tube (813), the conical flow guide cover (8131) and the valve core plate (814) are coaxially distributed.

5. The manual servo rotary valve according to claim 4, characterized in that: A sealing slot (8140) is evenly provided on the inner wall of one side of the valve core plate (814), and a valve core filter plate (8141) is provided on the other side of the valve core plate (814).

6. The manual servo rotary valve according to claim 5, characterized in that: The inner cavity of the valve core plate 1 (814) is provided with a recoil assembly, and the recoil assembly includes a curved buffer elastic wire (81411) and a movable impact plate (81412). The curved buffer elastic wire (81411) and the movable impact plate (81412) are provided in six groups, and each group of the curved buffer elastic wire (81411) is correspondingly connected to a group of the movable impact plate (81412). One end of the curved buffer elastic wire (81411) is fixedly connected to the side wall of the valve core plate 1 (814), and the other end of the curved buffer elastic wire (81411) is hinged to one end of the movable impact plate (81412), and one end of the movable impact plate (81412) is rotatably connected to the inner wall of the valve core plate 1 (814) through a hinge.

7. The manual servo rotary valve according to claim 6, characterized in that: The blocking member (82) comprises an arc-shaped blocking rod (821), a tooth plate (822) and a valve core plate (823). The side-view cross-section of the arc-shaped blocking rod (821) presents a "C"-shaped structure. One side of the arc-shaped blocking rod (821) is arranged as a curved surface. The outer surface of the curved surface is slidably connected to the inner surface of the limit support back plate (8). The tooth plate (822) is fixedly mounted on a side of the arc-shaped blocking rod (821) away from the limit support back plate (8), and the tooth plate (822) is adapted to mesh with the outer surface of the side fan-shaped half tooth (332).

8. The manual servo rotary valve according to claim 7, characterized in that: The inner surface of the arc-shaped blocking rod (821) is slidably connected to the curved surface of the extending rod (811); one end of the arc-shaped blocking rod (821) is fixedly connected to a connecting column; the other end of the connecting column is fixedly connected to a valve core plate 2 (823); the valve core plate 2 (823) is an "*"-shaped plate structure; the outer surface of the valve core plate 2 (823) is movably engaged with the inner surface of the blocking slot (8140).

9. The manual servo rotary valve according to claim 8, characterized in that: Two groups of the staggered through tubes (7) are provided, and the two groups of the staggered through tubes (7) are respectively fixedly mounted on the inner walls of the A-port air outlet (5) and the B-port air outlet (6), and the staggered through tubes (7) penetrate the inner wall of the P-port air inlet (4).

10. A method for using a manual servo rotary valve, which is implemented based on the manual servo rotary valve according to any one of claims 1 to 9, characterized in that: The method for using the manual servo rotary valve comprises the following steps: Step 1: Connect the P-port air inlet (4) of the rotary valve to the air source, and connect the A-port air outlet (5) and the B-port air outlet (6) of the rotary valve to the two ends of the external cylinder respectively, hold the rotating handle (31) on the rotating body (3), and control the extension and retraction of the cylinder by rotating the handle (31); Step 2: By controlling the rotation angle of the handle (31), the degree of interlacing between the protruding member (81) and the blocking member (82) is adjusted. When the handle is rotated, the protruding member (81) and the blocking member (82) will move horizontally and gradually open or close the passage of the air outlet through the adaptive engagement between them; Step 3: When the handle (31) is rotated clockwise, the cylindrical connecting pipe (813) moves horizontally to the right, and with the cooperation of the fixing strip, the conical guide cover (8131) and the valve core plate 1 (814) are connected; Step 4: Then the valve core plate 1 (814) moves to the right, the blocking slot (8140) is separated from the valve core plate 2 (823), and the blocking slot (8140) is in an open state. At this time, the air source enters the inner cavity of the valve core plate 1 (814) through the blocking slot (8140), and the air source is buffered and filtered before being discharged alternately through the A port air outlet (5) and the B port air outlet (6).

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