Servo regulating valve and operation method thereof

Abstract

The invention relates to the technical field of regulating valves, in particular to a servo regulating valve and an operation method thereof.The servo regulating valve comprises an outer protection mechanism, an inner protection mechanism and an inner protection mechanism, the outer protection mechanism comprises a mounting cylinder with an opening in the lower end, a circulation cylinder coaxially and fixedly arranged on the top face of the mounting cylinder and an upper end cover covering the top face of the circulation cylinder; the driving mechanism comprises a motor arranged on one side of the mounting cylinder, a second fluted disc coaxially arranged at the lower end of the interior of the mounting cylinder, 2n gear columns evenly distributed on the outer side of the second fluted disc in the circumferential direction and a third fluted disc coaxially arranged at the upper end of the interior of the mounting cylinder, and a containing groove used for containing the gear columns is formed in the inner wall of the mounting cylinder; the gear column is engaged with the second fluted disc and the third fluted disc, and a telescopic cylinder is coaxially and fixedly arranged on the top face of the second fluted disc. And the adjusting mechanism comprises an adjusting column, a fixing disc, a screw column and a linkage plate, the adjusting column is coaxially arranged in the circulation cylinder in a clearance fit mode, the service life of an execution piece can be effectively prolonged through the servo adjusting valve, the adjusting modes are rich, and practicability is good.

Description

Technical Field

[0001] The present invention relates to the technical field of regulating valves, and in particular to a servo regulating valve and an operating method thereof. Background Art

[0002] A servo control valve is a type of valve. The servo control valve is used to adjust the flow of materials and close the flow of materials. The servo control valve can achieve high-sensitivity action, excellent flow regulation dynamics and other performance, so that it can adapt to the use of different working conditions. The servo control valve has the functions of forward and reverse rotation, small size, light weight, and easy operation, and is widely used. The servo control valve is mainly composed of an electric actuator and a regulating valve component. For example, the existing public documents CN214368073U-a servo high-pressure flow control valve, CN211082862U-a servo control valve and CN117404514A-an electric servo control valve all disclose a servo control valve. Although the above-mentioned servo control valve can realize the working condition adjustment during the material conveying process to achieve the conveying parameters required by the staff, the existing servo control valve still has the following shortcomings in actual use: 1. Because the existing servo control valve is mainly suitable for material conveying systems with higher pressure, the regulating valve parts will be subjected to different pressures during operation. When adjusting under a higher pressure environment, the servo motor will increase the power to achieve action adjustment, which will cause the output shaft of the motor and the gears that cooperate with the action to bear a larger torque. Such a torque environment is prone to damage to the actuator accessories; 2. In the existing servo control valve design, the material mainly flows from the end of the adjustment column (adjustment is achieved through the axial movement of the end of the adjustment column). This causes the entire adjustment column to be in an unbalanced force state during the long-term use of the servo control valve, thereby indirectly reducing the service life of the adjustment column; Therefore, it is necessary to improve the prior art to solve the above-mentioned technical problems. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In view of the problem that when the above-mentioned existing servo regulating valve is faced with regulating a material with a relatively large pressure, the servo actuator will be subjected to a relatively large torque, thereby reducing the service life of the servo actuator, a servo regulating valve is proposed.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a servo regulating valve, comprising an outer protection mechanism, including a mounting cylinder with an opening at the lower end, a flow cylinder coaxially fixed on the top surface of the mounting cylinder and an upper end cover covering the top surface of the flow cylinder; a driving mechanism, including a motor arranged on one side of the mounting cylinder, a second toothed disc coaxially arranged at the lower end position inside the mounting cylinder, 2n gear columns uniformly arranged on the outer side of the second toothed disc along the circumferential direction and a third toothed disc coaxially arranged at the upper end position inside the mounting cylinder, a placement groove for placing the gear column is opened on the inner wall of the mounting cylinder, and the gear column is respectively meshed with the second toothed disc and the third toothed disc, a telescopic cylinder is coaxially fixed on the top surface of the second toothed disc, and a gear column is fixed on the bottom surface of the third toothed disc A second T-shaped column is provided, a convex groove for sliding sleeve of the second T-shaped column is provided in the telescopic cylinder, and a first spring is slidably sleeved on the second T-shaped column inside the convex groove, an electromagnetic column is fixedly provided on the inner bottom surface of the convex groove, a magnetic disk is fixedly provided on the bottom surface of the second T-shaped column, and the side surface close to the magnetic disk and the electromagnetic column are arranged in the same sex, a rotating column is fixedly sleeved in the gear column, and a second blind hole for clearance fit of the rotating column is provided on the upper and lower end surfaces of the placement groove, the axial dimensions of the n gear columns are reduced or increased one by one, and the axes of the two gear columns in the same radial direction of the installation cylinder are equal; and an adjustment mechanism, including an adjustment column, a fixed disk, a screw column and a linkage plate, and the adjustment column is coaxially clearance fit in the circulation cylinder.

[0006] The beneficial effects of the present invention are as follows: during the use of the servo regulating valve, the magnetic force of the electromagnetic column is adjusted in coordination with the setting of repelling the magnet disk with the same charge, and the change of the magnetic force of the electromagnetic column is used to realize the second T-shaped column driving the third toothed disk to adjust its position in the vertical direction. Because the axial dimensions of the n gear columns are gradually reduced or increased, when the third toothed disk moves up and down, the number of gear columns meshing with the third toothed disk will be adaptively adjusted, the second toothed disk will drive all the gear columns to rotate, and the third toothed disk will adaptively cooperate with a certain number of gear columns. In this way, when facing materials with different pressures, the third toothed disk will be adaptively adjusted, that is, when the material pressure is greater, the number of gear columns meshing with the third toothed disk will increase, thereby indirectly dispersing the force transmission between the gear column and the third gear. Such a dispersed design can effectively protect the second toothed disk, the gear column and the third gear, improve the service life of the drive mechanism, and avoid damage to it due to large torque.

[0007] As a preferred solution of a servo control valve of the present invention, the output shaft of the motor cooperates with the input end of the reducer, a fourth gear disc is fixed on the output shaft of the reducer, a fifth gear disc is coaxially fixed on the bottom surface of the second gear disc, and the fourth and fifth gear discs are meshed with the same first gear disc, a fifth T-shaped column is slidably sleeved in the first gear disc, and the upper end of the fifth T-shaped column is fixed on the bottom surface of the mounting tube.

[0008] As a preferred solution of a servo control valve of the present invention, a first T-shaped groove is opened in the middle of the bottom surface of the fifth gear disk, a first T-shaped column is gap-fitted in the first T-shaped groove, and the first T-shaped column is fixedly sleeved on the fixing plate, and the fixing plate is fixedly connected to the bottom surface of the mounting tube by screws.

[0009] As a preferred solution of a servo control valve of the present invention, a first mounting flange is fixedly sleeved on the outer wall of the upper end of the mounting cylinder, and mounting holes are provided at four corners of the first mounting flange; a second mounting flange is fixedly sleeved on the outer wall of the upper end of the circulation cylinder, and the second mounting flange is fixed to the upper end cover by bolts, a second mating ring is fixedly provided in the middle of the bottom surface of the upper end cover, and a first mating ring is fixedly provided on the inner wall of the circulation cylinder below the second mating ring.

[0010] As a preferred solution of a servo regulating valve of the present invention, the upper end of the side wall of the circulation cylinder is symmetrically provided with circulation ports, a connecting plate is fixedly connected to the outer wall of the circulation cylinder at the circulation port by bolts, and a connecting pipe connected to the interior of the circulation cylinder is fixedly provided on one side wall of the connecting plate.

[0011] In view of the fact that the regulating column of the existing servo regulating valve is always in a state of unbalanced force during long-term use, thereby indirectly reducing the service life of the regulating column, a servo regulating valve of the present invention is preferably further improved, wherein: three third T-shaped columns are fixedly provided on the top surface of the fixed disk along the same radial direction, wherein a third T-shaped column located at the center position is provided with a threaded blind groove penetrating the fixed disk, and the other two third T-shaped columns are provided with slots penetrating the fixed disk, and a second T-shaped groove for clearance fit of the third T-shaped column is provided on the bottom surface of the regulating column; the threaded blind groove is used for the spiral fit of the screw column, and a hexagonal column is fixedly provided at the lower end of the screw column, the screw column is slidably sleeved on the top plate of the mounting tube, and a hexagonal groove extending to the inside of the second T-shaped column and used for clearance fit of the hexagonal column is provided on the top surface of the third toothed disk.

[0012] As a preferred solution of a servo control valve of the present invention, wherein: a linkage plate is arranged inside a mounting tube, and plug posts are symmetrically fixed on both sides of the top surface of the linkage plate, and the upper ends of the plug posts slide through the top plate of the mounting tube and are slidably inserted into the slots; a through hole is opened in the middle of the linkage plate for the hexagonal column to slide through.

[0013] As a preferred solution of a servo control valve of the present invention, wherein: the two ends of the linkage plate are symmetrically slidably sleeved with a fourth T-shaped column, a first blind hole for fixedly connecting the upper end of the fourth T-shaped column is opened on the inner top surface of the mounting cylinder, a second spring is slidably sleeved on the fourth T-shaped column above the linkage plate, an electromagnetic block is embedded and fixed on the inner top surface of the mounting cylinder on one side of the first blind hole; a flow cavity is opened on the side wall of the regulating column along the radial direction.

[0014] Another beneficial effect of the present invention is that during the use of the servo control valve, the rotation of the third toothed disc can drive the entire screw column to rotate through the hexagonal column, and because of the spiral matching setting between the screw column and the threaded blind groove, under the rotation of the screw column, the fixed disc can drive the entire adjusting column to move in the vertical direction. Under such a movement mode, the adjusting column will pass through the flow port in the vertical direction, and the flow rate can be adjusted by changing the size of the flow port covered by the adjusting column. After the upper end of the adjusting column abuts against the upper end cover, the electromagnetic block is powered off, and under the action of the second spring reset, the linkage plate will drive the plug column to move downward, thereby releasing the matching between the plug column and the slot, further realizing the release of the rotation of the fixed disc by the plug column. At this time, under the rotation of the screw column, the entire adjusting column will also rotate accordingly, and the material flow rate can be adjusted by changing the contact position between the flow cavity and the flow port. The above two methods can meet the needs of flow regulation. Multiple adjustment methods can avoid uneven force on the adjusting column, increase the flow regulation method, and improve the service life of the adjusting column.

[0015] As a preferred solution of a servo regulating valve of the present invention, the middle part of the horizontal cross section of the flow chamber is arranged in an expanded arc shape avoiding the second T-shaped groove.

[0016] In addition, the present invention also provides the following technical solution: a method for operating a servo regulating valve, wherein the servo regulating valve is operated according to the following steps; S1: Through the operation of the motor, the fourth gear plate on the output shaft of the reducer rotates, and under the transmission of the first gear plate, the fifth gear plate drives the second gear plate to rotate; S2: The rotation of the second gear disc drives 2n gear columns to rotate synchronously, and finally the gear column drives the third gear disc to rotate; S3: In step S2, the vertical position of the third toothed disc is adjusted by controlling the change in the magnetic force of the electromagnetic column, and finally the meshing amount between the third toothed disc and the gear column is adjusted; S4: The screw column rotates under the rotation of the third toothed disc, and then the fixed disc drives the adjusting column to adjust its position in the vertical direction, and finally the flow rate of the material in the flow cylinder above the adjusting column is adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them: Figure 1 The figure is a schematic diagram of the overall structure of a servo control valve in the present invention.

[0018] Figure 2 For the present invention Figure 1 Bottom view of the structure.

[0019] Figure 3 For the present invention Figure 1 A cross-sectional view of the structure in the vertical direction.

[0020] Figure 4 For the present invention Figure 1 Exploded view of the structure.

[0021] Figure 5 It is a schematic diagram of the overall structure of the outer protection mechanism in the present invention.

[0022] Figure 6 It is a schematic diagram of the overall structure of the upper end cover in the present invention.

[0023] Figure 7 It is a schematic diagram of the cooperation between the second gear disc and the third gear disc in the present invention.

[0024] Figure 8 For the present invention Figure 7 A cross-sectional view of the structure in the vertical direction.

[0025] Fig. 9 It is an exploded view of the adjustment mechanism in the present invention.

[0026] Fig.10 It is a cross-sectional view of the adjusting column in the radial direction of the present invention. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included. Example 1

[0031] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 , which is the first embodiment of the present invention, and this embodiment provides a servo control valve. When the servo control valve is in use, the driving mechanism 200 and the regulating mechanism 300 are both arranged in the outer protection mechanism 100. The driving of the driving mechanism 200 can realize the action of the regulating mechanism 300, thereby realizing the regulation of the material flow.

[0032] Specifically, it includes an outer protection mechanism 100, including a mounting cylinder 101 with an opening at the lower end, a circulation cylinder 102 coaxially fixed on the top surface of the mounting cylinder 101, and an upper end cover 103 covering the top surface of the circulation cylinder 102; a driving mechanism 200, including a motor 201 arranged on one side of the mounting cylinder 101, a second toothed disc 203 coaxially arranged at the lower end position inside the mounting cylinder 101, 2n gear columns 204 uniformly arranged on the outer side of the second toothed disc 203 along the circumferential direction, and a third toothed disc 205 coaxially arranged at the upper end position inside the mounting cylinder 101; and an adjustment mechanism 300, including an adjustment column 301, a fixing plate 302, a screw column 303 and a linkage plate 304, and the adjustment column 301 is coaxially clearance-fitted in the circulation cylinder 102; A first mounting flange 101a is fixedly sleeved on the outer wall of the upper end of the mounting cylinder 101, and mounting holes 101a-1 are provided at the four corners of the first mounting flange 101a. The setting of the mounting holes 101a-1 facilitates the cooperation between the first mounting flange 101a and the external structure, thereby realizing the fixed installation of the entire device; a second mounting flange 102b is fixedly sleeved on the outer wall of the upper end of the circulation cylinder 102, and the second mounting flange 102b is fixed to the upper end cover 103 by bolts. This setting can realize the cooperation and disassembly between the upper end cover 103 and the circulation cylinder 102, and is convenient for internal maintenance. A second matching ring 103b is fixedly provided in the middle of the bottom surface of the upper end cover 103, and a first matching ring 102d is fixedly provided on the inner wall of the circulation cylinder 102 below the second matching ring 103b. In actual use, a sealing ring is provided between the first matching ring 102d and the second matching ring 103b, thereby improving the sealing performance of the cooperation; In addition, a controller 103a is fixedly mounted on the upper end cover 103 for controlling various electrical components in the device.

[0033] Furthermore, the upper end of the side wall of the circulation cylinder 102 is symmetrically provided with circulation openings 102c, and a connecting plate 102a is fixedly connected to the outer wall of the circulation cylinder 102 at the circulation opening 102c by bolts, and a connecting pipe 102a-1 connected to the interior of the circulation cylinder 102 is fixedly provided on one side wall of the connecting plate 102a. The connecting pipes 102a-1 on the two connecting plates 102a are respectively used for input and output of the material system. When the material is input and output, the material enters the interior of the circulation cylinder 102 through the circulation opening 102c, so as to facilitate the adjustment of the material flow rate by the adjusting column 301.

[0034] See Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a placement groove 101d for placing the gear column 204 is provided on the inner wall of the mounting cylinder 101, and the gear column 204 is meshed with the second toothed disc 203 and the third toothed disc 205 respectively. A rotating column 204a is fixedly sleeved in the gear column 204, and a second blind hole 101d-1 for clearance fit of the rotating column 204a is provided on the upper and lower end surfaces of the placement groove 101d. This setting can realize the limit of the end of the rotating column 204a, and the output shaft of the motor 201 cooperates with the input end of the reducer 201a, and the output shaft of the reducer 201a A fourth toothed disc 201a-1 is fixedly arranged on the top, the motor 201 and the reducer 201a are fixedly mounted on the first mounting flange 101a, a fifth toothed disc 203a is coaxially fixedly arranged on the bottom surface of the second toothed disc 203, and the fourth toothed disc 201a-1 and the fifth toothed disc 203a are meshed with the same first toothed disc 202, a fifth T-shaped column 202a is slidably sleeved in the first toothed disc 202, and the upper end of the fifth T-shaped column 202a is fixedly arranged on the bottom surface of the mounting tube 101, so as to realize that the first toothed disc 202 rotates with the fifth T-shaped column 202a as the axis; When the above arrangement is in use, the fourth toothed disc 201a-1 can be rotated by the operation of the motor 201 and the speed regulation of the reducer 201a. The fifth toothed disc 203a can drive the second toothed disc 203 to rotate synchronously through the rotation of the fourth toothed disc 201a-1 and the linkage of the first toothed disc 202. Because the second toothed disc 203 and the third toothed disc 205 are both meshed with the gear column 204, the rotation of the second toothed disc 203 ultimately drives the third toothed disc 205 to rotate synchronously.

[0035] Furthermore, a first T-shaped groove 203a-1 is opened in the middle of the bottom surface of the fifth toothed disc 203a, and the gap in the first T-shaped groove 203a-1 is matched with the first T-shaped column 101b-1. This arrangement can, on the one hand, realize the limiting of the fifth toothed disc 203a by the first T-shaped column 101b-1, and on the other hand, realize the rotation of the fifth toothed disc 203a with the first T-shaped column 101b-1 as the axis, and the first T-shaped column 101b-1 is fixedly sleeved on the fixing plate 101b, and the fixing plate 101b is fixedly connected to the bottom surface of the mounting tube 101 by screws.

[0036] See Figure 4 , Figure 7 and Figure 8 As shown, a telescopic cylinder 203b is coaxially fixed on the top surface of the second toothed disc 203, and a second T-shaped column 205b is fixed on the bottom surface of the third toothed disc 205. A convex groove 203b-1 for the second T-shaped column 205b to be slidably sleeved is provided in the telescopic cylinder 203b, and a first spring 205b-2 is slidably sleeved on the second T-shaped column 205b inside the convex groove 203b-1. The first spring 205b-2 can realize the reset of the second T-shaped column 205b. An electromagnetic column 203b-2 is fixedly arranged on the inner bottom surface of the second T-shaped column 205b, a magnetic disk 205b-1 is fixedly arranged on the bottom surface of the second T-shaped column 205b, and the magnetic disk 205b-1 and the side surface close to the electromagnetic column 203b-2 are arranged in the same manner, and the axis dimensions of the n gear columns 204 are arranged to decrease or increase one by one, so that an even number of gear columns 204 can be ensured to mesh with the third toothed disk 205, and the axes of the two gear columns 204 in the same radial direction of the mounting tube 101 are equal; When the above arrangement is in use, magnetic magnetism can be generated by energizing the electromagnetic column 203b-2. Because of the repulsion between the electromagnetic column 203b-2 and the magnet disk 205b-1, the second T-shaped column 205b will move in the vertical direction. Under the action of the first spring 205b-2 resetting, but under the action of the change in the magnetic force generated by the electromagnetic column 203b-2, the third toothed disk 205 can be adjusted in the vertical direction. By gradually reducing or increasing the axial dimensions of the n gear columns 204, when the third toothed disk 205 moves in the vertical direction, the number of gear columns 204 meshing with the third toothed disk 205 can be adjusted. The adjustment of the number of gear columns 204 can achieve the adjustment of the sharing of the meshing force of the third toothed disk 205 by the gear columns 204. Example 2

[0037] Reference Figure 3 , Figure 4 , Figure 5 , Figure 7 and Fig. 9, which is the second embodiment of the present invention, is based on the previous embodiment, except that, in order to facilitate better implementation of the device, the specific structure of the regulating mechanism 300 for material regulation is detailed.

[0038] Specifically, three third T-shaped columns 302a are fixedly arranged on the top surface of the fixed disk 302 along the same radial direction, wherein a threaded blind groove 302a-1 penetrating the fixed disk 302 is provided in a third T-shaped column 302a located at a central position, and slots 302a-2 penetrating the fixed disk 302 are provided in the other two third T-shaped columns 302a, and a second T-shaped groove 301b for clearance fit of the third T-shaped column 302a is provided on the bottom surface of the adjusting column 301, thereby realizing the fit and limit between the adjusting column 301 and the third T-shaped column 302a. In actual use, the fit between the adjusting column 301, the fixed disk 302 and the third T-shaped column 302a can be improved by applying adhesive to improve the bonding firmness; The threaded blind groove 302a-1 is used for the spiral fit of the screw column 303, and the lower end of the screw column 303 is fixedly provided with a hexagonal column 303a, and the screw column 303 is slidably sleeved on the top plate of the mounting tube 101. In actual use, in order to prevent the adjustment column 301 from causing the screw column 303 to move in the vertical direction, a limit can be matched between the screw column 303 and the top plate of the mounting tube 101, that is, to ensure that the screw column 303 can rotate freely while maintaining the limit fixation of the screw column 303, and a hexagonal groove 205a extending to the inside of the second T-shaped column 205b and used for the clearance fit of the hexagonal column 303a is opened on the top surface of the third toothed disc 205, which is used for the hexagonal column 303a to fit with the hexagonal groove 205a. When the third toothed disc 205 moves up and down, the hexagonal column 303a can always cooperate with the hexagonal groove 205a, and a through hole 304d for the hexagonal column 303a to slide through is opened in the middle of the linkage plate 304; The linkage plate 304 is arranged inside the installation tube 101, and plug posts 304c are symmetrically fixed on both sides of the top surface of the linkage plate 304. The upper ends of the plug posts 304c slide through the top plate of the installation tube 101 and are slidably inserted into the slots 302a-2, so that the plug posts 304c play a role of limiting and guiding the fixed plate 302, thereby realizing the movement of the adjustment column 301 in the vertical direction; When the above arrangement is in use, the hexagonal column 303a can drive the screw column 303 to rotate through the rotation of the third toothed disc 205. Due to the spiral matching arrangement between the screw column 303 and the threaded blind groove 302a-1, under the action of the rotation of the screw column 303, the fixed disc 302 can drive the adjusting column 301 to reciprocate in the axial direction of the screw column 303. The adjusting column 301 moves up and down in the circulation tube 102 to adjust the flow rate of the material. Example 3

[0039] Reference Figure 3 , Figure 5 , Fig. 9 and Fig.10 , which is the third embodiment of the present invention. This embodiment is based on the previous embodiment, but differs in that, in order to prevent the regulating column 301 from affecting its service life due to uneven force, another design of the flow regulating method of the regulating column 301 is implemented to enrich the flow regulating method and improve the service life of the regulating column 301.

[0040] Specifically, both ends of the linkage plate 304 are symmetrically slidably sleeved with fourth T-shaped columns 304b, and the fourth T-shaped columns 304b can play a role in limiting and guiding the movement of the linkage plate 304. A first blind hole 101c for fixing the upper end of the fourth T-shaped column 304b is provided on the inner top surface of the mounting cylinder 101. A second spring 304b-1 is slidably sleeved on the fourth T-shaped column 304b above the linkage plate 304. The second spring 304b-1 can achieve the reset of the linkage plate 304. An electromagnetic block 304a is fixedly embedded on the inner top surface of the mounting cylinder 101 on one side of the first blind hole 101c; a flow cavity 301a is provided on the side wall of the adjusting column 301 along the radial direction; When the above arrangement is in use, when the adjusting column 301 moves to the upper end of the circulation cylinder 102 and the upper end cover 103 contacts the top surface of the adjusting column 301, by cutting off the power to the electromagnetic block 304a, and then under the resetting action of the second spring 304b-1, the linkage plate 304 can drive the plug column 304c to move downward, and the plug column 304c disengages from the slot 302a-2, and the plug column 304c loses the limit on the fixed plate 302. In this way, the adjusting column 301 can be rotated under the rotation of the screw column 303, and the circulation chamber 301a is used for material transportation, thereby realizing another design method for adjusting the material flow rate.

[0041] Furthermore, the middle portion of the horizontal cross section of the circulation cavity 301a is arranged in an expanded arc shape avoiding the second T-shaped slot 301b, thereby avoiding interference with the second T-shaped slot 301b while maintaining the circulation cavity 301a to achieve material flow. Example 4

[0042] This embodiment is the fourth embodiment of the present invention, and this embodiment provides an operation method of a servo control valve. Specifically, the operation is performed according to the following steps: S1: Through the operation of the motor 201, the fourth toothed disc 201a-1 on the output shaft of the reducer 201a rotates, and under the transmission of the first toothed disc 202, the fifth toothed disc 203a drives the second toothed disc 203 to rotate; S2: The rotation of the second toothed disc 203 drives the 2n gear columns 204 to rotate synchronously, and finally the gear columns 204 drive the third toothed disc 205 to rotate; S3: In step S2, the vertical position of the third toothed disc 205 is adjusted by controlling the change in the magnetic force of the electromagnetic column 203b-2, and finally the meshing amount between the third toothed disc 205 and the gear column 204 is adjusted; S4: The screw column 303 is rotated under the rotation of the third toothed disc 205 , and then the fixed disc 302 drives the adjusting column 301 to adjust its position in the vertical direction, and finally the material flow rate in the flow cylinder 102 above the adjusting column 301 is adjusted.

[0043] In addition, it should be noted that the components not described in detail in this article are prior art.

[0044] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of a plurality of parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to a variety of modifications that still fall within the scope of the appended claims.

[0045] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0046] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A servo regulating valve, characterized in that: include, The outer protection mechanism (100) comprises a mounting cylinder (101) with an opening at the lower end, a circulation cylinder (102) coaxially fixedly mounted on the top surface of the mounting cylinder (101), and an upper end cover (103) covering the top surface of the circulation cylinder (102); The driving mechanism (200) comprises a motor (201) arranged on one side of a mounting cylinder (101), a second toothed disc (203) coaxially arranged at the lower end position inside the mounting cylinder (101), 2n gear columns (204) uniformly arranged along the circumferential direction on the outside of the second toothed disc (203), and a third toothed disc (205) coaxially arranged at the upper end position inside the mounting cylinder (101), wherein a placement groove (101d) for placing the gear column (204) is provided on the inner wall of the mounting cylinder (101), and the gear column (204) is meshed with the second toothed disc (203) and the third toothed disc (205) respectively, a telescopic cylinder (203b) is coaxially fixed on the top surface of the second toothed disc (203), and a second T-shaped column (205b) is fixed on the bottom surface of the third toothed disc (205), and a convex groove (101d) for slidingly sleeved with the second T-shaped column (205b) is provided in the telescopic cylinder (203b). convex groove (203b-1), and a first spring (205b-2) is slidably sleeved on a second T-shaped column (205b) inside the convex groove (203b-1), an electromagnetic column (203b-2) is fixedly provided on the inner bottom surface of the convex groove (203b-1), a magnetic disk (205b-1) is fixedly provided on the bottom surface of the second T-shaped column (205b), and the side surfaces of the magnetic disk (205b-1) and the electromagnetic column (203b-2) that are close to each other are arranged in the same manner, a rotating column (204a) is fixedly sleeved in the gear column (204), and a second blind hole (101d-1) for clearance fit of the rotating column (204a) is provided on the upper and lower end surfaces of the placement groove (101d), the axial dimensions of the n gear columns (204) are arranged to decrease or increase one by one, and the axial dimensions of the two gear columns (204) in the same radial direction of the mounting cylinder (101) are equal; and, The adjustment mechanism (300) comprises an adjustment column (301), a fixing plate (302), a screw column (303) and a linkage plate (304); the adjustment column (301) is coaxially clearance-fitted in the circulation cylinder (102).

2. A servo control valve according to claim 1, characterized in that: The output shaft of the motor (201) cooperates with the input end of the reducer (201a); a fourth toothed disc (201a-1) is fixedly disposed on the output shaft of the reducer (201a); a fifth toothed disc (203a) is coaxially fixedly disposed on the bottom surface of the second toothed disc (203); the fourth toothed disc (201a-1) and the fifth toothed disc (203a) are meshed with the same first toothed disc (202); a fifth T-shaped column (202a) is slidably sleeved in the first toothed disc (202); and the upper end of the fifth T-shaped column (202a) is fixedly disposed on the bottom surface of the mounting tube (101).

3. A servo control valve according to claim 2, characterized in that: A first T-shaped slot (203a-1) is provided in the middle of the bottom surface of the fifth toothed disc (203a); a first T-shaped column (101b-1) is gap-fitted in the first T-shaped slot (203a-1); the first T-shaped column (101b-1) is fixedly sleeved on a fixing plate (101b); and the fixing plate (101b) is fixedly connected to the bottom surface of the mounting tube (101) by means of screws.

4. A servo control valve according to claim 2, characterized in that: A first mounting flange (101a) is fixedly sleeved on the outer side wall of the upper end of the mounting tube (101), and mounting holes (101a-1) are provided at four corners of the first mounting flange (101a); A second mounting flange (102b) is fixedly sleeved on the outer wall of the upper end of the circulation cylinder (102), and the second mounting flange (102b) is fixed to the upper end cover (103) by bolts, a second matching ring (103b) is fixedly provided in the middle of the bottom surface of the upper end cover (103), and a first matching ring (102d) is fixedly provided on the inner wall of the circulation cylinder (102) below the second matching ring (103b).

5. A servo control valve according to claim 4, characterized in that: A circulation opening (102c) is symmetrically provided at the upper end of the side wall of the circulation cylinder (102); a connecting plate (102a) is fixedly connected to the outer wall of the circulation cylinder (102) at the position of the circulation opening (102c) by bolts; and a connecting pipe (102a-1) communicating with the interior of the circulation cylinder (102) is fixedly provided on one side wall of the connecting plate (102a).

6. A servo control valve according to claim 3 or 5, characterized in that: Three third T-shaped columns (302a) are fixedly arranged on the top surface of the fixed disk (302) along the same radial direction, wherein a third T-shaped column (302a) located at the center is provided with a threaded blind groove (302a-1) penetrating the fixed disk (302), and the other two third T-shaped columns (302a) are provided with slots (302a-2) penetrating the fixed disk (302), and a second T-shaped groove (301b) for clearance fit of the third T-shaped column (302a) is provided on the bottom surface of the adjusting column (301); The threaded blind groove (302a-1) is used for the spiral fit of the screw column (303), and a hexagonal column (303a) is fixedly provided at the lower end of the screw column (303). The screw column (303) is slidably sleeved on the top plate of the mounting tube (101), and a hexagonal groove (205a) extending into the interior of the second T-shaped column (205b) and used for the clearance fit of the hexagonal column (303a) is provided on the top surface of the third toothed disc (205).

7. A servo control valve according to claim 6, characterized in that: The linkage plate (304) is arranged inside the installation tube (101), and plug posts (304c) are symmetrically fixed on both sides of the top surface of the linkage plate (304), and the upper ends of the plug posts (304c) slide through the top plate of the installation tube (101) and are slidably inserted into the slots (302a-2); A through hole (304d) is provided in the middle of the linkage plate (304) for the hexagonal column (303a) to slide through.

8. A servo control valve according to claim 7, characterized in that: The two ends of the linkage plate (304) are also symmetrically slidably sleeved with fourth T-shaped columns (304b); a first blind hole (101c) for fixedly connecting the upper end of the fourth T-shaped column (304b) is provided on the inner top surface of the installation cylinder (101); a second spring (304b-1) is slidably sleeved on the fourth T-shaped column (304b) above the linkage plate (304); and an electromagnetic block (304a) is embedded and fixedly provided on the inner top surface of the installation cylinder (101) on one side of the first blind hole (101c); A flow cavity (301a) is provided on the side wall of the regulating column (301) along the radial direction.

9. A servo control valve according to claim 8, characterized in that: The middle part of the horizontal cross section of the circulation cavity (301a) is arranged in an expanded arc shape that avoids the second T-shaped groove (301b).

10. A method for operating a servo control valve, characterized in that: A servo control valve according to any one of claims 7 to 9 operates according to the following steps; S1: Through the operation of the motor (201), the fourth toothed disc (201a-1) on the output shaft of the reducer (201a) rotates, and under the transmission of the first toothed disc (202), the fifth toothed disc (203a) drives the second toothed disc (203) to rotate; S2: The rotation of the second toothed disc (203) drives the 2n gear columns (204) to rotate synchronously, and finally the gear columns (204) drive the third toothed disc (205) to rotate; S3: In step S2, the vertical position of the third toothed disc (205) is adjusted by controlling the change in the magnitude of the magnetic force of the electromagnetic column (203b-2), and finally the meshing amount between the third toothed disc (205) and the gear column (204) is adjusted; S4: The screw column (303) is rotated by the rotation of the third toothed disc (205), and then the fixed disc (302) drives the adjustment column (301) to adjust its position in the vertical direction, thereby finally adjusting the flow rate of the material in the flow cylinder (102) above the adjustment column (301).

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