Regulating valve with easily replaceable valve core

Abstract

The application discloses an adjusting valve with a valve core convenient to replace, which comprises a main body assembly, a valve body, a valve core seat and a valve core body fixedly connected in the valve body, a rotating transmission part fixed on the valve core body, an installation groove on the valve core body outside the rotating transmission part, the valve core body in the valve core seat capable of sliding along the arm in the valve core seat, a sealing seat fixedly connected on the valve core seat on the upper side of the valve body, a valve rod capable of reciprocating linearly in the height direction connected on the sealing seat, the valve core body screwed on the valve rod in the valve core seat; a dismounting assembly, the dismounting assembly comprising a driving part arranged outside the sealing seat and rotationally connected on the sealing seat, the driving part capable of being transmissionally connected with the rotating transmission part, a fixed shell fixed on the outer end of the valve body, a supporting frame capable of moving towards or away from the center of the valve core seat connected in the fixed shell, and a supporting block for supporting the valve core body fixedly connected on the supporting frame; and the valve core body is convenient to replace.

Description

Technical Field

[0001] This invention relates to the field of control valve technology, and in particular to a control valve with a convenient valve core replacement mechanism. Background Technology

[0002] A pneumatic control valve is a control valve that uses compressed gas as a power source, a cylinder as an actuator, and a valve positioner to control the degree of valve opening and closing. It is suitable for transporting gases and other fluids.

[0003] In existing technology, a control valve includes a valve stem and a valve body. A sealing seat is detachably connected to the upper side of the valve body, and the sealing seat is fixedly connected to the upper side of the valve body using several fastening bolts. A valve core is fixedly connected to one end of the valve stem that extends into the valve body. The valve body also contains components such as a connecting ring that work with the valve core to control the degree of opening and closing. After the control valve has been working for a long time, the internal valve core is prone to wear and damage to varying degrees, which affects the control accuracy of the control valve. At this time, the valve core needs to be replaced. When replacing the valve core, all the components connected to the valve body must be disassembled before the valve core can be removed from the valve stem. Then, the various components in the valve body are reassembled, a new valve core is installed, and the sealing seat and other components are installed before the valve core replacement can be completed. This operation is inconvenient. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the inconvenience of replacing valve cores in the above and / or existing control valves, the present invention is proposed.

[0006] Therefore, the problem to be solved by the present invention is that the replacement of valve core is inconvenient in the prior art. The present invention provides a regulating valve that facilitates valve core replacement, which can replace the valve core without removing the valve body, making the operation convenient.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a regulating valve that facilitates valve core replacement, comprising,

[0008] The main component includes a valve body, in which a valve core seat and a valve core body are fixedly connected. A rotating transmission component is fixed on the valve core body, and the valve core body has an installation groove on the outer periphery of the rotating transmission component. A valve core body that can slide along the inner arm of the valve core seat is connected inside the valve core seat. A sealing seat that is pressed against the valve core seat is fixedly connected to the upper side of the valve body. A valve stem that can reciprocate linearly in the height direction is connected to the sealing seat. The valve core body is threadedly connected to the valve stem inside the valve core seat.

[0009] The assembly includes a disassembly and assembly component, which is disposed outside the sealing seat and rotatably connected to the sealing seat. The active component is rotatably connected to a rotating transmission component. A fixed housing is fixed to the outer end of the valve body. A support frame that can move toward or away from the center of the valve core seat is connected inside the fixed housing. A support block for supporting the valve core body is fixedly connected to the support frame. The valve body has an inlet and outlet at the end facing the fixed housing, which allows the valve core body to pass through. The inner cavity of the fixed housing covers the inlet and outlet.

[0010] As a preferred embodiment of the regulating valve for easy replacement of valve core according to the present invention, wherein: a circular insertion groove is opened at the downward end of the valve core body, and the valve core body can be inserted into the support block through the insertion groove.

[0011] As a preferred embodiment of the regulating valve for easy valve core replacement described in this invention, the lower part of the fixed housing is rotatably connected to a transmission screw, one end of the transmission screw is outside the fixed housing, the support frame includes a movable block threadedly connected to the transmission screw, a support plate is fixed on the upper side of the movable block, the left and right sides of the support block are respectively attached to the inner walls of the left and right ends of the fixed housing, and the support block is connected to the upper side of the support plate.

[0012] As a preferred embodiment of the regulating valve for easy valve core replacement described in this invention, the support plate is further fixed with several columns, and a sealing plate is fixed on the upper side of each column. The sealing plate can slide against the inner wall of the upper end of the fixed housing. The upper end of the fixed housing has an opening that allows the valve core body to be inserted into the fixed housing. When the support plate moves toward the center of the valve body, the sealing plate gradually blocks the opening. When the sealing plate just begins to cover the opening, the valve core body continues to move toward the center of the valve body. The sealing plate abuts against the limiting step inside the fixed housing, and the valve core body is just aligned with the valve stem. At this time, the sealing plate still covers the opening.

[0013] As a preferred embodiment of the regulating valve for easy replacement of valve core described in this invention, wherein: a vertically arranged rotating shaft is rotatably connected to the sealing seat and is driven by the driving component; an intermediate transmission component that can move up and down is connected to the rotating shaft extending into the sealing seat; the intermediate transmission component and the rotating transmission component cooperate; in the initial state, the upper side of the intermediate transmission component is attached to the inner wall of the sealing seat at the lower end.

[0014] As a preferred embodiment of the regulating valve for easy replacement of valve core according to the present invention, wherein: a telescopic shaft is slidably connected inside the rotating shaft, and the intermediate transmission component is fixedly connected to one end of the telescopic shaft that extends downward outside the rotating shaft.

[0015] As a preferred embodiment of the regulating valve for easy valve core replacement described in this invention, the rotating shaft has a spirally arranged guide groove on its outer circumference. A movable sleeve that can slide up and down along the outer circumference of the rotating shaft is sleeved on the rotating shaft. A position adjusting component is fixedly connected to the movable sleeve. The inner end of the position adjusting component is inserted into the guide groove. The movable sleeve and the intermediate transmission component are movably connected. The intermediate transmission component can rotate relative to the movable sleeve. When the rotating shaft rotates, the movable sleeve and the valve core body move synchronously in the height direction.

[0016] As a preferred embodiment of the regulating valve for easy valve core replacement described in this invention, the following features: a plurality of connecting rods are arranged on the lower side of the movable sleeve; a connecting plate is rotatably connected to the intermediate transmission component; the lower end of the connecting rod is fixedly connected to the connecting plate; a limiting plate that fits against the lower side of the limiting plate is fixedly connected to the lower end of the intermediate transmission component; a limiting connecting shaft is fixedly fixed on the upper side of the limiting plate; the limiting connecting shaft is fixedly connected to the telescopic shaft; an annular rotating groove is formed between the outer edge of the limiting connecting shaft and the inner side of the intermediate transmission component, allowing the connecting rod to pass vertically downward, so that the inner edge of the intermediate transmission component and the outer edge of the limiting connecting shaft rotate along the outer edge and inner edge of the connecting rod, respectively.

[0017] As a preferred embodiment of the regulating valve for easy valve core replacement described in this invention, wherein: a synchronizing plate is fixed on the outer periphery of the limiting plate and extends toward the center of the rotating transmission component; a connecting groove is opened on the outer periphery of the lower end of the rotating transmission component; the synchronizing plate can fit against the lower side of the rotating transmission component at the upper end of the connecting groove, and the synchronizing plate can also leave the rotating transmission component; when the upper side of the synchronizing plate fits against the lower side of the rotating transmission component, there is a moving gap between the synchronizing plate and the lower side of the mounting groove.

[0018] As a preferred embodiment of the regulating valve for easy valve core replacement described in this invention, the inner side of the connecting rod on the upper side of the limiting connecting shaft is provided with a supporting rotation groove, and a plurality of rotation limiting blocks corresponding one-to-one with the supporting rotation groove are fixedly connected to the upper side of the limiting connecting shaft. The rotation limiting blocks are inserted into the corresponding supporting rotation grooves, and the outer edge of the rotation limiting blocks can rotate just along the inner edge of the connecting rod.

[0019] The beneficial effects of this invention are as follows: In the initial state, the sealing plate covers the opening, and the fixed housing is in a sealed state; when the valve core needs to be replaced, the transmission screw is rotated. When the sealing plate abuts against the limiting step of the fixed housing, the rotation of the transmission screw is stopped, the support block is aligned with the valve core body, and the rotating shaft outside the sealing seat rotates. The rotating shaft drives the movable sleeve to move along the outside of the rotating shaft through the position adjustment component, and drives the intermediate transmission component to move through the connecting rod. At the same time, the rotating shaft drives the rotating transmission component to rotate through the intermediate transmission component, and the rotating transmission component drives the valve core to rotate. Adjusting the rotation direction of the rotating shaft causes the valve core body to rotate and move downward along the valve stem. At the same time, the intermediate transmission component moves downward under the action of the connecting rod, and the valve core body gradually moves down to contact the support block. The valve core body is inserted into the support block. When the valve core body leaves the valve stem, the lower side of the valve core body contacts the support plate. The transmission screw is rotated in the opposite direction, causing the valve core body to move in the direction of the outside of the fixed housing. When the valve core body moves to align with the opening, the rotation of the transmission screw is stopped, the valve core body is removed, and the transmission screw is rotated again to move the support plate to the initial state; when a new valve core body needs to be replaced... Insert the new valve core body onto the support block, causing the intermediate transmission component to descend again until its upper side is level with the upper side of the connecting groove. At this point, the lower side of the limiting plate can fit against the valve core body mounted on the lower side of the groove. Rotate the transmission screw to move the support plate towards the valve stem, allowing the valve core body to pass through the intermediate transmission component. The limiting plate then fits against the upper side of the valve core body. The positioner causes the valve stem to descend until its lower side is level with the upper side of the valve core body. The positioner then stops, causing the rotating shaft to rotate. This causes the limiting plate and intermediate transmission component to rotate and move upwards. The upper part of the valve core and the rotating transmission component work together. The intermediate transmission component drives the rotating transmission component to rotate. When the upper part of the synchronous plate contacts the rotating transmission component, the synchronous plate drives the rotating transmission component to rotate and move upwards onto the valve stem. The intermediate transmission component and the rotating transmission component rotate and move upwards synchronously. When the valve core body is rotated to the set position on the valve stem, the installation of the new valve core body is realized. The transmission screw is rotated in the opposite direction to make the support plate move away from the valve body and retract into the fixed housing. As can be seen from the above, the present invention facilitates the replacement of the valve core by combining the disassembly and assembly components and the valve core body, and the operation is convenient. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0021] Figure 1 This is the front view of the present invention.

[0022] Figure 2 The three-dimensional structure of the present invention Figure 1 .

[0023] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0024] Figure 4 for Figure 2 A magnified view of a section at point B in the middle.

[0025] Figure 5 This is a three-dimensional structural diagram of the present invention after the cover plate on the outside of the fixed housing is hidden.

[0026] Figure 6 for Figure 5 A magnified view of a section at point C.

[0027] Figure 7 This is a partial cross-sectional three-dimensional structure of the present invention. Figure 1 .

[0028] Figure 8 for Figure 7 A magnified view of a section at point D.

[0029] Figure 9 This is a partial cross-sectional three-dimensional structure of the present invention. Figure 2 .

[0030] Figure 10 for Figure 9 A magnified view of a section at point E in the middle.

[0031] Figure 11 for Figure 9 A magnified view of a section at point F.

[0032] Figure 12 This is a partial cross-sectional three-dimensional structure of the present invention. Figure 3 .

[0033] Figure 13 for Figure 12 A magnified view of a section at point G.

[0034] Figure 14 This is a three-dimensional structural diagram of a movable sleeve connected to a rotating shaft.

[0035] Figure 15 for Figure 14 A magnified view of a section at point H.

[0036] Figure 16 This is a partial cross-sectional three-dimensional structure of the present invention. Figure 4 .

[0037] Figure 17 for Figure 16 A magnified view of a section at point I.

[0038] Among them, 100 is the main component, 101 is the valve stem, 102 is the sealing seat, 103 is the valve body, 103a is the fixed housing, 103a-1 is the opening, 104 is the cover plate, 104a is the positioning countersunk hole, 105 is the valve core seat, 106 is the valve core body, 106a is the connection port, 200 is the disassembly and assembly component, 201 is the transmission screw, 201a is the rotating handle, 202a is the sealing baffle, 202b is the support plate, 202c is the sealing plate, 202d is the column, 202e is the moving block, 203 is the movable sleeve, 203a is the connecting rod, and 203a-1 is the supporting rotating countersunk groove. 204 Intermediate transmission component, 205 Support limiting block, 205a Rotation limiting groove, 206 Rotating shaft, 206a Upper rotating part, 206b Lower rotating part, 206c Position adjusting part, 206c-1 Guide groove, 207 Rotary transmission component, 207a Connecting groove, 208 Transition transmission component, 209 Driving component, 210 Driven component, 211 Position adjusting component, 212 Rotation limiting block, 213 Limiting plate, 213a Synchronizing plate, 213b Limiting connecting shaft, 214 Telescopic shaft, 215 Connecting plate, 216 Support block, X Inlet / Outlet, S Movement clearance, M Rotation groove. Detailed Implementation

[0039] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0040] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0041] 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 phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0042] Example 1

[0043] Reference Figures 1-9 This is the first embodiment of the present invention. This embodiment provides a regulating valve that facilitates the replacement of the valve core, which enables the disassembly of the valve core body 106 and the removal of the disassembled valve core body 106 from the valve body 103.

[0044] A control valve with a convenient valve core replacement includes a main body assembly 100, which includes a valve body 103. A valve core seat 105 and a valve core body 106 are fixedly connected inside the valve body 103. A rotation transmission component 207 is fixed on the valve core body 106. The valve core body 106 has an installation groove on the outer periphery of the rotation transmission component 207. A valve core body 106 that can slide along the inner arm of the valve core seat 105 is connected inside the valve core seat 105. A sealing seat 102 that is pressed against the valve core seat 105 is fixedly connected to the upper side of the valve body 103. A valve stem 101 that can reciprocate linearly in the height direction is connected to the sealing seat 102. The valve core body 106 is threadedly connected to the valve stem 101 inside the valve core seat 105. A disassembly and assembly component 200 for removing the valve core body 106 from the valve stem 101 or installing it onto the valve stem 101 is connected to the valve body 103.

[0045] Specifically, the disassembly and assembly assembly 200 includes an active component 209 disposed outside the sealing seat 102 and rotatably connected to the sealing seat 102. The active component 209 can be connected to the rotation transmission component 207. A fixed housing 103a is fixed to the outer end of the valve body 103. A cover plate 104 is fixedly connected to the outer side of the fixed housing 103a. A support frame that can move toward or away from the center of the valve core seat 105 is connected inside the fixed housing 103a. A support block 216 for supporting the valve core body 106 is fixedly connected to the support frame. An inlet X is opened at the end of the valve body 103 facing the fixed housing 103a, which allows the valve core body 106 to pass through. The inner cavity of the fixed housing 103a covers the inlet X. A circular insertion groove is opened at the lower end of the valve core body 106, which allows the valve core body 106 to be inserted into the support block 216 through the insertion groove.

[0046] When the valve core body 106 needs to be replaced, the upper side of the valve core body 106 abuts against the lower side of the sealing seat 102; the support frame moves towards the valve stem 101. When the support block 216 aligns with the insertion groove, the support frame stops rotating. The driving member 209 is manually rotated, which drives the rotation transmission member 207 to rotate. The rotation transmission member 207 drives the valve core body 106 to rotate and move downward from the valve stem 101. The valve core body 106 gradually inserts into the support block 216. When the valve core body 106 leaves the valve stem 101, the valve core body 106 falls down. Move the support frame towards the fixed housing 103a. The valve core body 106 passes through the inlet / outlet X and enters the fixed housing 103a. Remove the valve core body 106 and insert the new valve core body 106 onto the support block 216. Move the support frame towards the valve stem 101. The valve stem 101 is lowered by the positioner (not shown in this application, but is prior art). The rotating transmission component 207 rotates and moves upward, screwing into the valve stem 101 until it reaches the set position, thus completing the installation of the valve core body 106.

[0047] Specifically, a transmission screw 201 is rotatably connected to the lower part of the fixed housing 103a. One end of the transmission screw 201 is outside the fixed housing 103a. The support frame includes a movable block 202e threadedly connected to the transmission screw 201. A support plate 202b is fixed to the upper side of the movable block 202e. The left and right sides of the support block 216 are respectively attached to the inner walls of the left and right ends of the fixed housing 103a. The support block 216 is connected to the upper side of the support plate 202b. Several columns 202d are also fixed on the support plate 202b. A sealing plate 202c is fixed to the upper side of the columns 202d. The sealing plate 202c can slide just against the inner wall of the upper end of the fixed housing 103a. The upper end of the fixed housing 103a has an opening that allows the valve core body 106 to be inserted. When the support plate 202b moves toward the center of the valve body 103, the opening 103a-1 inside the fixed housing 103a is gradually covered by the sealing plate 202c. When the sealing plate 202c just begins to cover the opening 103a-1, the valve core body 106 continues to move toward the center of the valve body 103. The sealing plate 202c abuts against the limiting step inside the fixed housing 103a, and the valve core body 106 is just aligned with the valve stem 101. At this time, the sealing plate 202c still covers the opening 103a-1. In addition, a sealing baffle 202a is fixed on the upper side of the support plate 202b. The sealing baffle 202a just seals the inlet and outlet X. The support block 216 is between the sealing baffle 202a and the sealing plate 202c.

[0048] A conveniently gripped rotary handle 201a can be provided on the transmission screw 201. The rotary handle 201a has a hole for inserting a positioning pin, and a positioning pin is slidably connected to the rotary handle 201a. Several positioning countersunk holes 104a are provided on the outer side of the cover plate 104. The position of the positioning countersunk holes 104a is set according to the position when disassembling the valve core body 106, installing the valve core body 106, taking out the valve core body 106 through the opening 103a-1, and the position when the sealing baffle 202a just enters the inlet / outlet X. The positioning pin can be screwed into the corresponding positioning countersunk hole 104a. Rotating the transmission screw 201 causes the moving block 202e to move. Adjusting the rotation direction of the transmission screw 201 moves the support frame toward the center of the valve body 103. First, the sealing baffle 202a passes through the inlet / outlet X and enters the valve body 103. When the sealing plate 202c abuts against the limiting step of the fixed housing 103a, the support block 216 aligns with the insertion groove, and the sealing plate 202c covers the opening 103a-1. Stop rotating the transmission screw 201. At this time, the positioning pin can be coaxial with the corresponding positioning countersunk hole 104a. Screw the positioning pin into the positioning countersunk hole 104a to prevent... Stop the transmission screw 201 from rotating; when removing the valve core body 106 from the valve stem 101, unscrew the locating pin to separate it from the fixed housing 103a, rotate the rotating handle 201a to move the moving block 202e away from the valve stem 101, and when the valve core body 106 is aligned with the opening 103a-1, stop rotating the transmission screw 201, remove the valve core body 106, and install a new valve core body 106. The new valve core body 106 is supported on the upper side of the support plate 202b. Rotate the rotating handle 201a again to move the support plate 202b toward the valve stem 101. When the sealing plate 202c abuts against the limit step, stop rotating the rotary handle 201a and screw in the positioning pin so that it is screwed into another corresponding positioning countersunk hole 104a. After the valve core body 106 is installed on the valve stem 101, the valve core body 106 leaves the support block 216 and the positioning pin is unscrewed so that it leaves the fixed housing 103a. Rotate the rotary handle 201a in the opposite direction so that the sealing baffle 202a moves toward the fixed housing 103a. When the sealing baffle 202a moves to the inlet / outlet X position, stop rotating the rotary handle 201a.

[0049] Example 2

[0050] Reference Figure 9 , Figures 11-17 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment and provides a regulating valve that facilitates the replacement of the valve core. It can further realize the disassembly of the valve core body 106 and the installation of a new valve core body 106, which is convenient to operate.

[0051] Specifically, a vertically arranged rotating shaft 206 is rotatably connected to the sealing seat 102 and is driven by the driving member 209. An intermediate transmission member 204 that can move up and down is connected to the rotating shaft 206 that extends into the sealing seat 102. The intermediate transmission member 204 and the rotating transmission member 207 cooperate. In the initial state, the upper side of the intermediate transmission member 204 is attached to the inner wall of the sealing seat 102 at the lower end. A non-circular telescopic shaft 214 is slidably connected inside the rotating shaft 206. The intermediate transmission member 204 is fixedly connected to the end of the telescopic shaft 214 that extends downward out of the rotating shaft 206.

[0052] One end of the rotating shaft 206 extending out of the sealing seat 102 is connected to a driven member 210. A transition transmission member 208 is also rotatably connected to the sealing seat 102. The two ends of the transition transmission member 208 cooperate with the driven member 210 and the driving member 209, respectively. The driving member 209, the transition transmission member 208, the driven member 210, the intermediate transmission member 204, and the rotating transmission member 207 are all preferably gears. The setting of the components at the mounting groove does not affect the adjustment of the opening and closing degree of the valve body 103 by the valve core body 106. When initially disassembling the valve core body 106, adjust the position of the support block 216 to align it with the valve stem 101. The positioner then moves the valve core body 106 upwards to abut against the sealing seat 102. The positioner stops, and the valve stem 101 remains stationary. At this point, the intermediate transmission component 204 and the rotary transmission component 207 cooperate to rotate the driving component 209. This rotation, via the transition transmission component 208 and the driven component, drives the rotating shaft 206 to rotate. The rotating shaft 206 then drives the intermediate transmission component via the telescopic shaft 214. When component 204 rotates, the intermediate transmission component 204 drives the rotating transmission component 207 to rotate. The rotating transmission component 207 rotates and moves downward along the valve stem 101, gradually connecting to the support block 216. When the valve core body 106 just leaves the valve stem 101, that is, when the upper side of the valve core body 106 is aligned with the lower side of the valve stem 101, the valve core body 106 just falls onto the support plate 202b, causing the support plate 202b to move away from the valve stem 101. 6. When the valve core body 106 is moved to the position of the opening 103a-1, stop rotating the rotating handle 201a, take out the valve core body 106, put the new valve core body 106 into the opening 103a-1, insert the new valve core body 106 into the support block 216, and then rotate the rotating handle 201a to align the new valve core body 106 with the valve stem 101. Use the positioner to lower the valve stem 101 so that the lower side of the valve stem 101 is flush with the upper side of the rotating transmission component 207, and install the valve core body 106.

[0053] Specifically, the outer circumference of the rotating shaft 206 is provided with a spirally arranged guide groove 206c-1. A movable sleeve 203, which can slide up and down along the outer circumference of the rotating shaft 206, is sleeved on the rotating shaft 206. A position adjusting component 211 is fixedly connected to the movable sleeve 203. The inner end of the position adjusting component 211 is inserted into the guide groove 206c-1. The movable sleeve 203 and the intermediate transmission component 204 are movably connected. The intermediate transmission component 204 can rotate relative to the movable sleeve 203. When the rotating shaft 206 rotates, the movable sleeve 206c-1... 03 and valve core body 106 move synchronously in the height direction. Several connecting rods 203a are arranged on the lower side of the movable sleeve 203. A connecting plate 215 is rotatably connected inside the intermediate transmission component 204. The lower ends of the connecting rods 203a are fixedly connected to the connecting plate 215. A limiting plate 213, which fits against the lower side of the limiting plate 213, is fixedly connected to the lower end of the intermediate transmission component 204. A limiting connecting shaft 213b is fixedly fixed to the upper side of the limiting plate 213. The limiting connecting shaft 213b is fixedly connected to the telescopic shaft 214. An annular rotating groove M is formed between the outer edge of the connecting shaft 213b and the inner side of the intermediate transmission component 204, allowing the connecting rod 203a to pass vertically downwards. This allows the inner edge of the intermediate transmission component 204 and the outer edge of the limiting connecting shaft 213b to rotate along the outer and inner edges of the connecting rod 203a, respectively. A synchronous plate 213a, extending towards the center of the rotating transmission component 207, is also fixed to the outer periphery of the limiting plate 213. A connecting groove 207a is formed on the outer periphery of the rotating transmission component 207 at its downward-facing end. A new valve... The core body 106 has a connection port 106a at one end opposite to the inlet / outlet X, which communicates with the mounting groove. The intermediate transmission component 204 and the limiting plate 213 can pass through the connection port 106a and enter the mounting groove. The synchronizing plate 213a can be attached to the lower side of the rotating transmission component 207 at the upper end of the connecting groove 207a, and the synchronizing plate 213a can also leave the rotating transmission component 207. When the upper side of the synchronizing plate 213a is attached to the lower side of the rotating transmission component 207, there is a moving gap S between the synchronizing plate 213a and the lower side of the mounting groove.

[0054] In the initial state (i.e., when the valve core does not need to be replaced), the sealing plate 202c covers the opening 103a-1, the sealing baffle 202a is exactly inside the inlet / outlet X, the valve body 103 and the fixed housing 103a are isolated from each other, and the inner cavity of the fixed housing 103a is also sealed. When the valve core needs to be replaced, the transmission screw 201 is rotated. When the sealing plate 202c abuts against the limit step of the fixed housing 103a, the rotation of the transmission screw 201 is stopped, the support block 216 is aligned with the valve core body 106, and the rotating shaft 206 outside the sealing seat 102 rotates. The rotating shaft 206 drives the movable sleeve 203 to move along the outside of the rotating shaft 206 via the position adjustment component 211, and drives the intermediate transmission component 204 to move via the connecting rod 203a. At the same time, the rotating shaft 206 drives the rotating transmission component 204 via the intermediate transmission component 204. 07. Rotation of the transmission component 207 drives the valve core to rotate. Adjusting the rotation direction of the rotating shaft 206 causes the valve core body 106 to rotate and move downward along the valve stem 101. At the same time, the intermediate transmission component 204 moves downward under the action of the connecting rod 203a. The valve core body 106 gradually moves downward until it contacts the support block 216. The valve core body 106 is inserted into the support block 216. When the valve core body 106 leaves the valve stem 101, the lower side of the valve core body 106 contacts the support plate 202b. Rotating the transmission screw 201 in the opposite direction causes the valve core body 106 to move towards the outside of the fixed housing 103a. When the valve core body 106 moves to align with the opening 103a-1, stop rotating the transmission screw 201, remove the valve core body 106, and then rotate the transmission screw 201 again to move the support plate 202b to the initial state.When a new valve core body 106 needs to be installed, insert the new valve core body 106 into the support block 216, causing the intermediate transmission component 204 to descend again. Before the new valve core body 106 moves below the valve stem 101, rotate the driving component 209 to lower the intermediate transmission component 204 to a height where it can contact the valve core body 106 on the lower side of the mounting groove. At this point, the upper side of the intermediate transmission component 204 is flush with the upper side of the connecting groove 207a. Continue to rotate the rotating handle 201a so that the valve core body 106 passes through the intermediate transmission component 204 via the connecting port 106a. At this time, the lower side of the limiting plate 213 can fit against the valve core body 106 on the lower side of the mounting groove. Rotate the rotary handle 201a to move the support plate 202b towards the valve stem 101. By controlling the positioner, the valve stem 101 moves downward until the lower side of the valve stem 101 is flush with the upper side of the valve core body 106. The positioner stops moving. Rotate the driving member 209, which drives the rotating shaft 206 to rotate. The limiting plate 213 and the intermediate transmission member 204 rotate upward. The upward movement of the intermediate transmission member 204 cooperates with the rotation transmission member 207. Part 204 drives the rotating transmission part 207 to rotate. When the height of the intermediate transmission part 204 rotating upward is the same as the thickness of the limiting plate 213, the upper side of the synchronous plate 213a and the lower side of the corresponding rotating transmission part 207 on the upper side of the connecting groove 207a come into contact. The synchronous plate 213a drives the rotating transmission part 207 to rotate upward and screw into the valve stem 101. The intermediate transmission part 204 and the rotating transmission part 207 rotate and move upward synchronously. When the valve core body 106 is screwed to the set position on the valve stem 101, the installation of the new valve core body 106 is realized; reverse Rotate the rotary handle 201a to retract the support plate 202b from the valve body 103 into the fixed housing 103a. The sealing baffle 202a is positioned within the inlet / outlet X, isolating the valve body 103 from the fixed housing 103a. Stop rotating the rotary handle 201a and screw the positioning pin into the corresponding positioning countersunk hole 104a to prevent the transmission screw 201 from rotating. As can be seen from the above, this invention, through the combined installation of the disassembly assembly 200 and the valve core body 106, allows for the replacement of the valve core body 106 without disassembling the entire valve body 103, making operation convenient.

[0055] Specifically, a support rotation groove 203a-1 is opened on the inner side of the connecting rod 203a on the upper side of the limiting connecting shaft 213b. Several rotation limiting blocks 212 corresponding to the support rotation groove 203a-1 are fixedly connected to the upper side of the limiting connecting shaft 213b. The rotation limiting blocks 212 are inserted into the corresponding support rotation groove 203a-1, and the outer edge of the rotation limiting blocks 212 can rotate along the inner edge of the connecting rod 203a.

[0056] By setting the limiting plate 213 and the rotation limiting block 212, the position of the connecting rod 203a relative to the intermediate transmission member 204 in the height direction is fixed, so that the intermediate transmission member 204 can move up and down with the connecting rod 203a and rotate around the inner and outer edges of the connecting rod 203a, thereby improving the reliability of the connection structure between the intermediate transmission member 204 and the connecting rod 203a.

[0057] Example 3

[0058] Reference Figure 10 This is the third embodiment of the present invention. This embodiment is based on the first two embodiments and can further restrict the rotation of the movable sleeve 203, so that the connecting rod 203a can only move up and down.

[0059] Specifically, the sealing seat 102 has a fixed groove coaxial with the rotating shaft 206 at its downward end. A support limiting block 205 is fixedly connected to the sealing seat 102 via the fixed groove. The support limiting block 205 has several rotation limiting grooves 205a corresponding to the connecting rod 203a. The connecting rod 203a extends downward through the corresponding rotation limiting groove 205a. The rotating shaft 206 includes a position adjusting part 206c, and an upper... The rotating part 206a is connected to the driven member 210. The upper rotating part 206a is rotatably connected to the sealing seat 102. The lower rotating part 206b is fixed to the lower side of the position adjusting part 206c. The lower side of the lower rotating part 206b is not lower than the lower side of the support limiting block 205. The position adjusting part 206c is provided with a spirally arranged guide groove 206c-1. The lower side of the position adjusting part 206c is attached to the upper side of the support limiting block 205.

[0060] By setting the support limit block 205 to restrict the rotation of the movable sleeve 203, the movable sleeve 203 can reliably move under the action of the rotating shaft 206 when the rotating shaft 206 rotates.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A regulating valve with a spool that is easy to replace, characterized in that: include, The main component (100) includes a valve body (103), in which a valve core seat (105) and a valve core body (106) are fixedly connected. A rotating transmission component (207) is fixed on the valve core body (106). The valve core body (106) on the outer periphery of the rotating transmission component (207) has an installation groove. A valve core body (106) that can slide along the inner arm of the valve core seat (105) is connected inside the valve core seat (105). A sealing seat (102) that is pressed against the valve core seat (105) is fixedly connected to the upper side of the valve body (103). A valve stem (101) that can reciprocate linearly in the height direction is connected to the sealing seat (102). The valve core body (106) is threadedly connected to the valve stem (101) inside the valve core seat (105). The assembly (200) includes an active component (209) disposed outside the sealing seat (102) and rotatably connected to the sealing seat (102). The active component (209) can be driven to connect with the rotation transmission component (207). A fixed housing (103a) is fixed to the outer end of the valve body (103). A support frame that can move toward or away from the center of the valve core seat (105) is connected inside the fixed housing (103a). A support block (216) for supporting the valve core body (106) is fixedly connected to the support frame. The valve body (103) faces the fixed housing (103a). One end of the fixed housing (103a) has an inlet / outlet (X) that allows the valve core body (106) to pass through, and the inner cavity of the fixed housing (103a) covers the inlet / outlet (X); the lower end of the valve core body (106) has a circular insertion groove, and the valve core body (106) can be inserted into the support block (216) through the insertion groove; the lower part of the fixed housing (103a) is rotatably connected to a transmission screw (201), one end of the transmission screw (201) is outside the fixed housing (103a), and the support frame includes a moving block (202e) threadedly connected to the transmission screw (201). A support plate (202b) is fixed to the upper side of the block (202e). The left and right sides of the support block (216) are respectively attached to the inner walls of the left and right ends of the fixed housing (103a). The support block (216) is connected to the upper side of the support plate (202b). Several columns (202d) are also fixed on the support plate (202b). A sealing plate (202c) is fixed to the upper side of the column (202d). The sealing plate (202c) can slide just against the inner wall of the upper end of the fixed housing (103a). The upper end of the fixed housing (103a) has an opening that allows the valve core body (106) to be inserted into the fixed housing. When the support plate (202b) moves toward the center of the valve body (103), the sealing plate (202c) gradually covers the opening (103a-1). When the sealing plate (202c) just begins to cover the opening (103a-1), the valve core body (106) continues to move toward the center of the valve body (103), and the sealing plate (202c) abuts against the limiting step inside the fixed housing (103a). The valve core body (106) is just aligned with the valve stem (101). At this time, the sealing plate (202c) still covers the opening (103a-1).

2. The regulating valve with convenient valve core replacement as described in claim 1, characterized in that: The sealing seat (102) is rotatably connected to a vertically arranged rotating shaft (206) that is connected to the driving member (209). The rotating shaft (206) extending into the sealing seat (102) is connected to an intermediate transmission member (204) that can move up and down. The intermediate transmission member (204) and the rotating transmission member (207) cooperate. In the initial state, the upper side of the intermediate transmission member (204) is attached to the inner wall of the sealing seat (102) at the lower end.

3. The regulating valve with convenient valve core replacement as described in claim 2, characterized in that: The rotating shaft (206) is slidably connected to a telescopic shaft (214), and the intermediate transmission component (204) is fixedly connected to one end of the telescopic shaft (214) that extends downward out of the rotating shaft (206).

4. The regulating valve with convenient valve core replacement as described in claim 3, characterized in that: The rotating shaft (206) has a spirally arranged guide groove (206c-1) on its outer periphery. A movable sleeve (203) that can slide up and down along the outer periphery of the rotating shaft (206) is sleeved on the rotating shaft (206). A position adjusting member (211) is fixedly connected to the movable sleeve (203). The inner end of the position adjusting member (211) is inserted into the guide groove (206c-1). The movable sleeve (203) and the intermediate transmission member (204) are movably connected. The intermediate transmission member (204) can rotate relative to the movable sleeve (203). When the rotating shaft (206) rotates, the movable sleeve (203) and the valve core body (106) move synchronously in the height direction.

5. The regulating valve with convenient valve core replacement as described in claim 4, characterized in that: A plurality of connecting rods (203a) are arranged on the lower side of the movable sleeve (203). A connecting plate (215) is rotatably connected inside the intermediate transmission component (204). The lower ends of the connecting rods (203a) are fixedly connected to the connecting plate (215). A limiting plate (213) that fits against the lower side of the limiting plate (213) is fixedly connected to the lower end of the intermediate transmission component (204). A limiting connecting shaft (213) is fixed on the upper side of the limiting plate (213). b) The limiting connecting shaft (213b) is fixedly connected to the telescopic shaft (214). An annular rotating groove (M) is formed between the outer edge of the limiting connecting shaft (213b) and the inner side of the intermediate transmission member (204) so ​​that the connecting rod (203a) can pass vertically downward, so that the inner edge of the intermediate transmission member (204) and the outer edge of the limiting connecting shaft (213b) rotate along the outer edge of the connecting rod (203a) and the inner edge of the connecting rod (203a) respectively.

6. The regulating valve with convenient valve core replacement as described in claim 5, characterized in that: The limiting plate (213) is also fixed with a synchronization plate (213a) that can extend toward the center of the rotating transmission component (207). The outer periphery of the rotating transmission component (207) facing downward has a connecting groove (207a). The synchronization plate (213a) can fit against the lower side of the rotating transmission component (207) at the upper end of the connecting groove (207a), and the synchronization plate (213a) can also leave the rotating transmission component (207). When the upper side of the synchronization plate (213a) fits against the lower side of the rotating transmission component (207), there is a moving gap (S) between the synchronization plate (213a) and the lower side of the mounting groove.

7. The regulating valve with convenient valve core replacement as described in claim 5 or 6, characterized in that: The inner side of the connecting rod (203a) on the upper side of the limiting connecting shaft (213b) has a supporting rotation groove (203a-1). Several rotation limiting blocks (212) corresponding one-to-one with the supporting rotation groove (203a-1) are fixedly connected to the upper side of the limiting connecting shaft (213b). The rotation limiting block (212) is inserted into the corresponding supporting rotation groove (203a-1), and the outer edge of the rotation limiting block (212) can rotate just along the inner edge of the connecting rod (203a).

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