Low-leakage regulating valve

Abstract

The low-leakage regulating valve comprises an upper cover and a lower cover, the bottom of the upper cover is fixedly connected with the lower cover, a pipe body is transversely welded to the lower portion of the lower cover, an air inlet is formed in the left side of the pipe body, an air outlet is formed in the right side of the pipe body, a left check block is welded to the upper left portion of the interior of the pipe body, and a right check block is welded to the lower left portion of the interior of the pipe body. A right check block is welded to the lower right portion of the interior of the pipe body, and a spacer is transversely welded between the left check block and the right check block. According to the low-leakage regulating valve, the spacer is transversely welded between the left stop block and the right stop block, when the long rod is guided by a traction mechanism above to ascend and descend, the plug block fixed to the bottom of the long rod can ceaselessly slide in the spacer, when the plug block is lifted, the exposed center channel serves as a material flow channel, and after the plug block settles, the material flow channel is closed. The short rod on the left side pushes the blocking piece downwards into the clamping groove along the sliding groove, a protection structure is formed on the left side of the closed plug block and the left side of the partition piece, and the problem that the valve element is prone to leakage due to damage is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valves, in particular to a low-leakage regulating valve. Background Art

[0002] A regulating valve is a control valve. There are many types of regulating valves, and the internal components include butterfly, ball, tee, diaphragm, single-way and double-way. Fluid or gas is transmitted by opening and closing the valve plate. Even corrosive materials can flow under the control of the valve. A general regulating valve is provided with an inlet and an outlet for material transportation. However, when an ordinary regulating valve is in use, only a single set of internal valve cores close the passage, which is easily affected by impact and tilted. Protective measures need to be taken to prevent valve leakage due to damage to the valve core, and to prevent excessive outflow of materials to pollute the surrounding environment or cause waste of resources.

[0003] Now, a new type of low leakage regulating valve is proposed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a low leakage regulating valve to solve the problem of easy leakage due to damage of the valve core in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low leakage regulating valve, comprising an upper cover and a lower cover, the bottom of the upper cover is fixedly connected to the lower cover, and a tube body is transversely welded below the lower cover, an air inlet is opened on the left side of the tube body, an air outlet is opened on the right side of the tube body, a left stopper is welded on the upper left side of the tube body, a right stopper is welded on the lower right side of the tube body, a spacer is transversely welded between the left stopper and the right stopper, a plug block is movably inserted inside the spacer, a long rod is welded above the plug block, a short rod is fixed to the upper left side of the plug block, a slide groove is provided on the inner side of the left stopper, and a stopper is movably inserted in the slide groove, and a card groove is drilled on the lower left side of the tube body.

[0006] Preferably, the blocking piece is directly above the card slot, and the blocking piece can slide up and down under the guidance of the short rod and the long rod.

[0007] Preferably, the plug is embedded in the interior of the spacer, and the plug can vertically enter and exit the hole at the center of the spacer.

[0008] Preferably, an inner groove is provided at the middle position of the inner side of the lower cover, and reinforcement frames are fixed on the left and right sides of the inner side of the inner groove, the inner side of the reinforcement frame is movably connected with a guide wheel, guide grooves are vertically reserved on both sides of the inner center of the long rod, and trapezoidal blocks are fixed on the inner wall of the guide groove.

[0009] Preferably, the guide wheels are clamped on two sides of the long rod in opposite directions, and the tooth groove spacing of the guide wheels can accommodate the trapezoidal block and push the long rod to move.

[0010] Preferably, a connecting tube is welded to the top of the upper cover, and a shell is welded to the top of the connecting tube, screw rods are movably connected to both sides of the shell, a top plate is welded to the top of the long rod, and threaded grooves are reserved inside both sides of the top plate, a transmission chamber is arranged above the shell, and planetary gears are movably connected to both sides of the transmission chamber, a leading gear is movably connected to the center of the transmission chamber, a motor is installed at the middle position of the top of the shell, and scale windows are installed inside both ends of the shell.

[0011] Preferably, the screw rod is embedded in the thread groove, and the screw rod can guide the top plate with the thread groove to rise and fall.

[0012] Preferably, the planetary gears and the leading gear are in the same horizontal plane, and the planetary gears rotate in the same direction.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the low leakage regulating valve not only prevents valve core leakage and maintains the stability of valve core movement, but also realizes visualization of valve core lifting;

[0014] By horizontally welding a spacer between the left stopper and the right stopper, when the long rod is guided by the upper traction mechanism to rise and fall, the plug fixed at its bottom will also slide continuously inside the spacer. When the plug is lifted, the exposed central channel is used for material flow. After the plug is settled, the short rod on its left side pushes the baffle downward along the slide into the card slot, forming a protective structure on the closed plug and the left side of the spacer to prevent the material from excessively colliding with the valve core and causing it to tilt, and prevent accidents such as leakage.

[0015] By setting an inner groove in the middle of the inner side of the lower cover, when the long rod slides up and down, it will pass through the connecting pipe, the upper cover and the lower cover, and the two sides of the inner groove of the lower cover are restricted by the guide wheels in the reinforcement frame. At this time, the guide wheels are just meshed and linked with the trapezoidal blocks in the guide grooves on the inner walls of the two sides of the long rod, which can prevent the valve core from deviating from the original track and lubricate the movement of the valve core.

[0016] A shell is welded on the top of the connecting pipe, and the motor installed above the shell is started. The main gear connected to the shell engages the planetary gears on both sides to rotate, and then the screw rod is rotated inside the shell, forcing the top plate with threaded grooves and the long rod to rise and fall, so as to open or close the valve body. The size of the valve core opening can also be adjusted through the scale windows at both ends to achieve speed control of the material flowing inside the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a front view cross-sectional structural schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the front cross-sectional structure of the tube body of the utility model;

[0019] Figure 3 This is a schematic diagram of the front cross-sectional structure of the lower cover of the utility model;

[0020] Figure 4 It is a schematic structural diagram of a front cross-section of the shell of the utility model.

[0021] In the figure: 1. upper cover; 2. lower cover; 3. air inlet; 4. left block; 5. slot; 6. spacer; 7. plug; 8. right block; 9. air outlet; 10. tube body; 11. inner groove; 12. connecting pipe; 13. shell; 14. motor; 15. long rod; 16. short rod; 17. slide groove; 18. block; 19. reinforcement frame; 20. guide wheel; 21. trapezoidal block; 22. guide groove; 23. screw rod; 24. threaded groove; 25. scale window; 26. transmission chamber; 27. planetary gear; 28. leading gear; 29. ​​top plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1: Please refer to Figure 1-4 A low leakage regulating valve comprises an upper cover 1 and a lower cover 2, wherein the bottom of the upper cover 1 is fixedly connected with the lower cover 2, and a tube body 10 is transversely welded below the lower cover 2, an air inlet 3 is provided on the left side of the tube body 10, and an air outlet 9 is provided on the right side of the tube body 10, a left stopper 4 is welded at the upper left of the tube body 10, a right stopper 8 is welded at the lower right of the tube body 10, a spacer 6 is transversely welded between the left stopper 4 and the right stopper 8, a plug 7 is movably inserted inside the spacer 6, and a long rod 15 is welded above the plug 7, a short rod 16 is fixed at the upper left of the plug 7, a slide groove 17 is provided on the inner side of the left stopper 4, and a stopper 18 is movably inserted in the slide groove 17, and a card groove 5 is drilled at the lower left of the tube body 10;

[0024] The blocking piece 18 is just above the card slot 5, and the blocking piece 18 can slide up and down under the guidance of the short rod 16 and the long rod 15. The plug 7 is embedded in the spacer 6, and the plug 7 can vertically enter and exit the hole at the center of the spacer 6;

[0025] Specifically, Figure 1and Figure 2 As shown, when the long rod 15 is guided by the traction mechanism above to rise and fall, the plug 7 fixed at its bottom will also slide continuously inside the diaphragm 6. When the plug 7 is lifted, the exposed central channel is used as a material flow channel. After the plug 7 is settled, the short rod 16 on its left side pushes the baffle 18 downward along the slide 17 into the card slot 5, forming a protective structure on the left side of the closed plug 7 and the diaphragm 6 to prevent the material from excessively colliding with the valve core.

[0026] Embodiment 2: An inner groove 11 is provided at the middle position of the inner side of the lower cover 2, and a reinforcement frame 19 is fixed on both sides of the inner side of the inner groove 11, and a guide wheel 20 is movably connected to the inner side of the reinforcement frame 19, and a guide groove 22 is vertically reserved on both sides of the inner center of the long rod 15, and a trapezoidal block 21 is fixed on the inner wall of the guide groove 22, and the guide wheel 20 is clamped on both sides of the long rod 15 in opposite directions, and the tooth groove spacing of the guide wheel 20 can accommodate the trapezoidal block 21 and push the long rod 15 to move;

[0027] Specifically, Figure 1 and Figure 3 As shown, when the long rod 15 slides up and down, it passes through the connecting pipe 12, the upper cover 1 and the lower cover 2, and the guide wheels 20 in the reinforcement frame 19 on both sides of the inner groove 11 of the lower cover 2 limit the movement of the long rod 15. At this time, the guide wheels 20 are just engaged with the trapezoidal blocks 21 in the guide grooves 22 on the inner walls of both sides of the long rod 15 to prevent the valve core from deviating from the original track.

[0028] Embodiment 3: A connecting pipe 12 is welded to the top of the upper cover 1, and a shell 13 is welded to the top of the connecting pipe 12. Screw rods 23 are movably connected to both sides of the shell 13. A top plate 29 is welded to the top of the long rod 15, and thread grooves 24 are reserved inside both sides of the top plate 29. A transmission chamber 26 is arranged above the shell 13, and planetary gears 27 are movably connected to both sides of the transmission chamber 26. A leading gear 28 is movably connected to the center of the transmission chamber 26. A motor 14 is installed at the middle position of the top of the shell 13, and scale windows 25 are installed inside both ends of the shell 13.

[0029] The screw rod 23 is embedded in the thread groove 24, and the screw rod 23 can guide the top plate 29 with the thread groove 24 to rise and fall. The planetary gear 27 and the leading gear 28 are in the same horizontal plane, and the planetary gear 27 rotates in the same direction;

[0030] Specifically, Figure 1 and Figure 4As shown, the motor 14 installed on the top of the shell 13 is started, and the planetary gears 27 on both sides are engaged and rotated by the main gear 28 connected to it, and then the screw rod 23 is rotated on the inner side of the shell 13, forcing the top plate 29 with the threaded groove 24 and the long rod 15 to rise and fall, so as to achieve the purpose of opening or closing the valve body. The size of the valve core opening can also be adjusted through the scale windows 25 at both ends, which is very convenient.

[0031] Working principle: When the utility model is used, the motor 14 installed on the upper part of the housing 13 is first started, and the planetary gears 27 on both sides are meshed and rotated by the main gear 28 connected to the motor 14, and then the screw rod 23 is rotated on the inner side of the housing 13, forcing the top plate 29 with the thread groove 24 and the long rod 15 to rise and fall, so as to achieve the purpose of opening or closing the valve body. The size of the valve core opening can also be adjusted through the scale windows 25 at both ends. When the long rod 15 is guided by the upper traction mechanism to rise and fall, the plug 7 fixed at the bottom will also slide continuously inside the diaphragm 6. When the plug 7 is lifted, the exposed center The channel is used for material flow. After the plug 7 is settled, the short rod 16 on its left side pushes the baffle 18 downward along the slide groove 17 into the card groove 5, forming a protective structure on the left side of the closed plug 7 and the partition 6 to prevent the material from excessively colliding with the valve core and causing it to tilt. In this process, the up and down sliding of the long rod 15 will pass through the connecting pipe 12, the upper cover 1 and the lower cover 2, and the guide wheels 20 in the reinforcement frame 19 on both sides of the inner groove 11 of the lower cover 2 limit the movement of the long rod 15. At this time, the guide wheels 20 are just engaged and linked with the trapezoidal blocks 21 in the guide grooves 22 on the inner walls of the two sides of the long rod 15, so as to prevent the valve core from deviating from the original track when it is lifted or lowered.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A low leakage regulating valve, comprising an upper cover (1) and a lower cover (2), characterized in that: The bottom of the upper cover (1) is fixedly connected to the lower cover (2), and a tube body (10) is transversely welded below the lower cover (2); an air inlet (3) is provided on the left side of the tube body (10), and an air outlet (9) is provided on the right side of the tube body (10); a left stopper (4) is welded at the upper left of the tube body (10), and a right stopper (8) is welded at the lower right of the tube body (10); a spacer (6) is transversely welded between the left stopper (4) and the right stopper (8); a plug (7) is movably inserted inside the spacer (6), and a long rod (15) is welded above the plug (7); a short rod (16) is fixed at the upper left of the plug (7); a slide groove (17) is provided on the inner side of the left stopper (4), and a stopper (18) is movably inserted in the slide groove (17); and a clamping groove (5) is drilled at the lower left of the tube body (10).

2. A low leakage regulating valve according to claim 1, characterized in that: The blocking piece (18) is located directly above the card slot (5), and the blocking piece (18) can slide up and down under the guidance of the short rod (16) and the long rod (15).

3. A low leakage regulating valve according to claim 1, characterized in that: The plug (7) is embedded in the interior of the spacer (6), and the plug (7) can vertically enter and exit the hole at the center of the spacer (6).

4. A low leakage regulating valve according to claim 1, characterized in that: An inner groove (11) is provided at the middle position of the inner side of the lower cover (2), and reinforcement frames (19) are fixed on both left and right sides of the inner side of the inner groove (11), and a guide wheel (20) is movably connected to the inner side of the reinforcement frame (19). Guide grooves (22) are vertically reserved on both sides of the inner center of the long rod (15), and a trapezoidal block (21) is fixed on the inner wall of the guide groove (22).

5. A low leakage regulating valve according to claim 4, characterized in that: The guide wheels (20) are clamped on two opposite sides of the long rod (15); the tooth groove spacing of the guide wheels (20) can accommodate the trapezoidal block (21) and push the long rod (15) to move.

6. A low leakage regulating valve according to claim 1, characterized in that: A connecting tube (12) is welded to the top of the upper cover (1), and a shell (13) is welded to the top of the connecting tube (12). Screw rods (23) are movably connected to both sides of the shell (13). A top plate (29) is welded to the top of the long rod (15), and thread grooves (24) are reserved inside both sides of the top plate (29). A transmission chamber (26) is arranged above the shell (13), and planetary gears (27) are movably connected to both sides of the transmission chamber (26). A leading gear (28) is movably connected to the center of the transmission chamber (26). A motor (14) is installed at the middle position of the top of the shell (13), and scale windows (25) are installed inside both ends of the shell (13).

7. A low leakage regulating valve according to claim 6, characterized in that: The screw rod (23) is embedded in the thread groove (24), and the screw rod (23) can guide the top plate (29) with the thread groove (24) to rise and fall.

8. A low leakage regulating valve according to claim 6, characterized in that: The planetary gear (27) and the leading gear (28) are located on the same horizontal plane, and the planetary gears (27) rotate in the same direction.

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