A three-stage perforated valve core regulating valve with adjusting baffle

Abstract

This invention relates to the field of valve technology, specifically to a reduced-stage three-stage perforated valve core regulating valve with an adjusting baffle. The valve body includes a valve body with an upper valve cover mounted on its top via fastening bolts. A valve stem is inserted into the surface of the upper valve cover. The valve body contains a leak-proof valve core assembly to prevent high pressure from entering the valve core cavity, thus saving the effort required to pull out the leak-proof valve core assembly. Furthermore, the fastening bolts are reinforced with anti-loosening components. The beneficial effects are as follows: This invention optimizes the internal valve core structure by designing a baffle on the circumference of the valve core to block the flow orifice on the sleeve. This solves the problem of high pressure entering the cavity between the valve core and the sleeve through the flow orifice on the sleeve. Because this pressure cannot be discharged, it persists, transforming into a downward force acting on the valve core, causing the actuator to require greater force to overcome this force and lift the valve core.

Description

Technical Field

[0001] This invention relates to the field of valve technology, specifically to a reduced-size three-stage perforated valve core regulating valve with an adjusting baffle. Background Technology

[0002] Currently, the control valves used domestically are mainly simple single-seat types. While this method can precisely regulate pressure, the valve seat of a multi-hole valve can act as a guide, providing better vibration damping. Multi-hole valve cores (selectable as 1-stage, 2-stage, or 3-stage) offer better pressure reduction and noise reduction, making them particularly suitable for gaseous media.

[0003] In existing technologies, three-stage perforated valve core regulating valves require a large actuator output force when used in the field. This is because the high pressure downstream of the valve enters the cavity between the valve core and the sleeve through the flow orifice on the sleeve. Since it cannot be discharged, this high pressure will persist and turn into a downward force acting on the valve core, causing the actuator to need a greater force to overcome this force and lift the valve core. Furthermore, after long-term use, there is a risk of the screws fixing the valve cover to loosen, which will affect the sealing performance of the valve body. Summary of the Invention

[0004] The purpose of this invention is to provide a reduced-size three-stage perforated valve core regulating valve with an adjusting baffle, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a three-stage perforated valve core regulating valve with an adjusting baffle, comprising a valve body, an upper valve cover mounted on the top of the valve body by fastening bolts, a valve stem inserted into the surface of the upper valve cover, and a leak-proof valve core assembly provided inside the valve body to prevent high pressure from entering the valve core cavity, thereby saving the effort required to pull out the leak-proof valve core assembly, and an anti-loosening reinforcement component provided on the surface of the fastening bolts.

[0006] Preferably, the leak-proof valve core assembly includes an upper sleeve, a sleeve, a sleeve flow hole, a valve core flow hole, a valve seat flow hole, a valve core, a valve seat, a valve core baffle, and an upper sleeve groove. The upper sleeve is fixed to the bottom end of the upper valve cover, the valve seat is fixed inside the valve body, the sleeve is clamped between the upper sleeve and the valve seat, the valve core is slidably connected in the sleeve, and the valve stem passes through the valve core. The surface of the sleeve has multiple sleeve flow holes, the surface of the valve core has multiple valve core flow holes, and the surface of the valve seat has multiple valve seat flow holes. The sleeve flow holes, valve core flow holes, and valve seat flow holes form a three-stage perforation structure inside the valve body.

[0007] Preferably, a valve core baffle is integrally formed on the surface of the valve core. The valve core baffle is in a ring plate structure. An upper sleeve groove is formed on the surface of the upper sleeve. The upper sleeve groove is in a ring groove. The upper sleeve groove and the valve core baffle are matched in size. After the valve core telescopically rises, the valve core baffle is inserted into the upper sleeve groove, and the valve core baffle blocks the sleeve flow holes, preventing the high pressure outside the sleeve from entering between the valve core and the sleeve through the sleeve flow holes.

[0008] Preferably, the anti-detachment and reinforcement component includes an elastic top support component and a top push limit component. The elastic top support component is arranged at one end of the fastening bolt. The elastic top support component expands outwards and abuts against the inner wall of the screw hole outside one end of the fastening bolt. The top push limit component is arranged at the other end of the fastening bolt. The top push limit component blocks and limits the elastic top support component.

[0009] Preferably, the elastic top support component includes a reserved groove, a through hole, reserved holes, plug-in blocks, rubber cushion blocks, a traction frame, a limit frame, rubber clamping blocks, an elastic support frame and an inclined surface. The reserved groove is formed at one end of the fastening bolt. The through hole is formed on the surface of the reserved groove. There are two groups of reserved holes, and the two groups of reserved holes are respectively formed on two parallel side walls of the reserved groove. The plug-in blocks correspond to the reserved holes one by one, and the plug-in blocks are movably inserted into the reserved holes. The inclined surface is formed on the surface of the plug-in block, and the inclined surface faces the through hole.

[0010] Preferably, the inclined surfaces on the surfaces of the two groups of plug-in blocks are distributed in a "V" shape. The rubber cushion block is in a circular arc plate structure. The rubber cushion block is fixed at the end of the plug-in block far from the reserved groove, and a plurality of partition seams are formed on the surface of the rubber cushion block.

[0011] Preferably, the limit frame is in a "U" shape plate structure. The limit frame is fixed on the surface of the plug-in block, and the limit frame and the inclined surface are symmetrically distributed with respect to the plug-in block. The rubber clamping block is in a "U" shape strip. The rubber clamping block is fixed on the surface of the reserved groove, and there are two groups of rubber clamping blocks. The two groups of rubber clamping blocks respectively correspond to the two parallel side plates of the limit frame, and the side plates of the limit frame are slidably connected in the rubber clamping blocks. The rubber clamping block is fixed between the limit frame and the reserved groove. An installation hole is formed on the surface of the limit frame. The installation hole is in an oval hole. The elastic support frame is in an oval ring plate, and the elastic support frame is fixed in the oval hole.

[0012] Preferably, the top push limit component includes an assembly groove, an assembly plate, a push rod and a rubber belt. The assembly groove is formed at the other end of the fastening bolt. The assembly groove is communicated with the through hole. The assembly plate corresponds to the assembly groove. The thickness of the assembly plate is less than the depth of the assembly groove. The push rod is fixed on the surface of the assembly plate. The push rod is movably inserted into the through hole. The length of the long side of the push rod is equal to the depth of the through hole.

[0013] Preferably, the rubber band is fixed to the surface of the assembly plate, and the two ends of the rubber band are respectively fixed to the surface of the fastening bolts on both sides of the assembly groove. There are two sets of rubber bands, and the two sets of rubber bands are symmetrically distributed about the push rod.

[0014] Preferably, the notch is an arc-shaped notch, and there are two sets of notches. The two sets of notches are symmetrically distributed about the assembly groove, and the notch and the assembly groove are connected. The limiting shaft is a "T"-shaped column structure, and the limiting shaft is fixed to the surface of the notch. The limiting shaft has a through hole, which is opened on the surface of the stop block. The rubber damping pad is fixed to one end of the stop block and is clamped between the stop block and the notch. The picking groove is opened on the surface of the stop block. The slot is an arc-shaped notch, and the slot is opened on the surface of the assembly plate. The slot and the notch correspond one-to-one.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This invention proposes a reduced-size three-stage perforated valve core regulating valve with an adjusting baffle. The internal valve core structure is optimized by designing a baffle on the circumference of the valve core to block the flow orifice on the sleeve. This solves the problem of high pressure entering the cavity between the valve core and sleeve through the flow orifice on the sleeve. Because it cannot be discharged, this high pressure persists, transforming into a downward force acting on the valve core. This forces the actuator to exert greater force to lift the valve core. To prevent the baffle from hitting the upper sleeve during the valve core's ascent, a groove is cut on the upper sleeve at the position corresponding to the baffle, allowing the baffle to fit into the groove. Furthermore, the screw fixing the upper valve cover is structurally optimized by adding an anti-loosening reinforcement component to the screw to prevent loosening after installation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic cross-sectional view of the valve core structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the valve core structure of the present invention;

[0020] Figure 4 This is a schematic cross-sectional view of the upper sleeve structure of the present invention;

[0021] Figure 5 This is a schematic diagram of the upper sleeve structure of the present invention;

[0022] Figure 6 This is a partial schematic diagram of the valve core mounting structure of the present invention;

[0023] Figure 7 This is a schematic diagram of the fastening bolt structure of the present invention;

[0024] Figure 8This is a schematic diagram of the reserved groove structure of the present invention;

[0025] Figure 9 This is a half-sectional schematic diagram of the fastening bolt structure of the present invention. Figure 1 ;

[0026] Figure 10 This is a half-sectional view of the structure of the present invention. Figure 2 ;

[0027] Figure 11 This is a schematic diagram of the plug-in block structure of the present invention;

[0028] Figure 12 This is a schematic diagram of the connection structure between the assembly plate and the push rod of the present invention;

[0029] Figure 13 This is a schematic diagram of the stop block structure of the present invention;

[0030] Figure 14 This is a schematic diagram of the assembly groove structure of the present invention;

[0031] Figure 15 This is a schematic diagram of the installation structure of the limiting frame of the present invention.

[0032] In the diagram: 1. Upper valve cover; 2. Valve stem; 3. Upper sleeve; 4. Sleeve; 5. Sleeve flow hole; 6. Valve core flow hole; 7. Valve seat flow hole; 8. Valve core; 9. Valve seat; 10. Valve core baffle; 11. Upper sleeve groove; 12. Fastening bolt; 13. Reserved groove; 14. Through hole; 15. Reserved hole; 16. Insert block; 17. Rubber pad; 18. Traction frame; 19. Limiting frame; 20. Rubber clamp; 21. Elastic support frame; 22. Inclined surface; 23. Assembly groove; 24. Assembly plate; 25. Push rod; 26. Rubber belt; 27. Notch; 28. Limiting shaft; 29. ​​Stop block; 30. Through hole; 31. Rubber damping pad; 32. Picking groove; 33. Slot; 34. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1

[0035] Please see Figure 1 and Figure 7This invention provides a technical solution: a reduced-size three-stage perforated valve core regulating valve with an adjusting baffle, comprising a valve body 10, an upper valve cover 1 mounted on the top of the valve body 10 by fastening bolts 13, a valve stem 2 inserted into the surface of the upper valve cover 1, and an anti-leakage valve core assembly provided inside the valve body 10 to prevent high pressure from entering the valve core cavity, saving the effort required to pull out the anti-leakage valve core assembly; the surface of the fastening bolts 13 is provided with an anti-loosening reinforcement component; the internal valve core structure is optimized by designing a baffle on the circumference of the valve core to block the flow hole on the sleeve, thereby... The high pressure after the valve enters the cavity between the valve core and the sleeve through the flow orifice on the sleeve. Because it cannot be discharged, this high pressure will persist and turn into a downward force on the valve core. This causes the actuator to need more force to overcome this force and lift the valve core. To prevent the baffle from hitting the upper sleeve during the valve core's ascent, a groove is cut on the upper sleeve at the position of the baffle corresponding to the upper sleeve, allowing the baffle to enter the groove. In addition, the structure of the screw fixing the upper valve cover is optimized, and an anti-loosening reinforcement component is added to the screw to prevent the screw from loosening after installation.

[0036] Example 2

[0037] See attached document Figures 2 to 6 Based on Embodiment 1, in order to achieve high pressure blocking downstream of the valve, the leak-proof valve core assembly includes an upper sleeve 3, a sleeve 4, a sleeve flow hole 5, a valve core flow hole 6, a valve seat flow hole 7, a valve core 8, a valve seat 9, a valve core baffle 11, and an upper sleeve groove 12. The upper sleeve 3 is fixed to the bottom end of the upper valve cover 1, the valve seat 9 is fixed inside the valve body 10, the sleeve 4 is clamped between the upper sleeve 3 and the valve seat 9, the valve core 8 is slidably connected in the sleeve 4, and the valve stem 2 passes through the valve core 8. The surface of the sleeve 4 has multiple sleeve flow holes 5, the surface of the valve core 8 has multiple valve core flow holes 6, and the surface of the valve seat 9 has multiple flow holes 6. Multiple valve seat flow holes 7, sleeve flow holes 5, valve core flow holes 6 and valve seat flow holes 7 form a three-stage perforation structure inside the valve body 10. The surface of the valve core 8 is integrally formed with a valve core baffle 11, which is an annular plate structure. The surface of the upper sleeve 3 is provided with an upper sleeve groove 12, which is an annular groove. The upper sleeve groove 12 and the valve core baffle 11 are matched in size. After the valve core 8 extends and rises, the valve core baffle 11 is inserted into the upper sleeve groove 12, and the valve core baffle 11 blocks the sleeve flow holes 5 to prevent the high pressure outside the sleeve 4 from entering between the valve core 8 and the sleeve 4 through the sleeve flow holes 5.

[0038] Figure 1Among them, P1 is the high-pressure side, and P2 is the low-pressure side after being reduced in pressure through three-level punching. Before the valve core baffle 11 of the valve core 8 is designed, the high pressure P1 after the valve will enter the cavity between the valve core 8 and the sleeve 4 through the sleeve flow hole 5 on the sleeve 4. By designing a valve core baffle 11 on the circumference of the valve core 8 to block the sleeve flow hole 5 on the sleeve 4, and at the same time, in order to prevent the valve core baffle 11 from hitting the upper sleeve 3 during the rising process of the valve core 8, an upper sleeve groove 12 is opened at the position of the valve core baffle 11 corresponding to the upper sleeve 3, so that the valve core baffle 11 enters the upper sleeve groove 12 to achieve the purpose of blocking. In this way, there is no high pressure coming into the cavity, and the force required for the actuator to lift the valve core 8 is reduced.

[0039] Embodiment 3

[0040] Refer to the appendix Figures 8 to 15 Based on Embodiment 2, in order to implement that the anti-loosening and reinforcement component includes an elastic top撑 component and a top-pushing and limiting component. The elastic top撑 component is arranged at one end of the fastening bolt 13, and the elastic top撑 component expands outward and abuts against the inner wall of the screw hole on the outer side of one end of the fastening bolt 13. The top-pushing and limiting component is arranged at the other end of the fastening bolt 13, and the top-pushing and limiting component blocks and limits the elastic top撑 component. The elastic top撑 component includes a reserved groove 14, a through hole 15, a reserved hole 16, a plugging block 17, a rubber cushion block 18, a traction frame 19, a limiting frame 20, a rubber clamping block 21, an elastic support frame 22 and an inclined surface 23. The reserved groove 14 is opened at one end of the fastening bolt 13, the through hole 15 is opened on the surface of the reserved groove 14, there are two groups of reserved holes 16, and the two groups of reserved holes 16 are respectively opened on two parallel side walls of the reserved groove 14. The plugging blocks 17 and the reserved holes 16 correspond one by one, and the plugging blocks 17 are movably plugged in the reserved holes 16. The inclined surface 23 is opened on the surface of the plugging block 17, and the inclined surface 23 faces the through hole 15. The inclined surfaces 23 on the surfaces of the two groups of plugging blocks 17 are distributed in a "V" shape. The rubber cushion block 18 is in the shape of an arc-shaped plate, and the rubber cushion block 18 is fixed at the end of the plugging block 17 far from the reserved groove 14, and a plurality of separation seams are opened on the surface of the rubber cushion block 18. The limiting frame 20 is in the shape of a "C" - shaped plate, and the limiting frame 20 is fixed on the surface of the plugging block 17, and the limiting frame 20 and the inclined surface 23 are symmetrically distributed with respect to the plugging block 17. The rubber clamping block 21 is in the shape of a "C" - shaped strip, and the rubber clamping block 21 is fixed on the surface of the reserved groove 14, and there are two groups of rubber clamping blocks 21. The two groups of rubber clamping blocks 21 respectively correspond to two parallel side plates of the limiting frame 20, and the side plates of the limiting frame 20 are slidably connected in the rubber clamping blocks 21. The rubber clamping block 21 is fixed between the limiting frame 20 and the reserved groove 14. An installation opening is opened on the surface of the limiting frame 20, and the installation opening is in the shape of an oval opening. The elastic support frame 22 is in the shape of an oval ring plate, and the elastic support frame 22 is fixed in the oval opening.

[0041] Embodiment 4

[0042] It should be noted that there may be some inaccuracies in the original text in terms of technical terms and expressions. You can check and correct them according to the actual situation. Also, the term "top撑" in the translation may need to be adjusted according to the correct technical term.Based on Embodiment 3, in order to achieve the top support and limiting of the plug-in block 17, the top pushing and limiting assembly includes an assembly groove 24, an assembly plate 25, a push rod 26, and a rubber band 27. The assembly groove 24 is opened at the other end of the fastening bolt 13, and the assembly groove 24 is connected to the through hole 15. The assembly plate 25 corresponds to the assembly groove 24, and the thickness of the assembly plate 25 is less than the depth of the assembly groove 24. The push rod 26 is fixed to the surface of the assembly plate 25 and is movably inserted into the through hole 15. The long side length of the push rod 26 is equal to the depth of the through hole 15. The rubber band 27 is fixed to the surface of the assembly plate 25, and both ends of the rubber band 27 are respectively fixed to the surfaces of the fastening bolts 13 on both sides of the assembly groove 24. The rubber band 27 is provided with two Two sets of rubber bands 27 are symmetrically distributed about the push rod 26. The notch 28 is an arc-shaped groove. There are two sets of notches 28, which are symmetrically distributed about the assembly groove 24 and are connected to each other. The limiting shaft 29 is a "T"-shaped column structure. The limiting shaft 29 is fixed to the surface of the notch 28 and passes through the through hole 31. The through hole 31 is opened on the surface of the stop block 30. The rubber damping pad 32 is fixed to one end of the stop block 30 and is clamped between the stop block 30 and the notch 28. The picking groove 33 is opened on the surface of the stop block 30. The slot 34 is an arc-shaped groove. The slot 34 is opened on the surface of the assembly plate 25 and corresponds one-to-one with the notch 28.

[0043] In actual use, a valve core baffle 11 is designed on the circumference of the valve core 8 to block the sleeve flow hole 5 on the sleeve 4. At the same time, in order to prevent the valve core baffle 11 from hitting the upper sleeve 3 during the rise of the valve core 8, an upper sleeve groove 12 is opened on the upper sleeve 3 at the position of the valve core baffle 11 corresponding to the upper sleeve 3, so that the valve core baffle 11 enters the upper sleeve groove 12 to achieve the purpose of sealing. In this way, no high pressure comes into the cavity, and the force required by the actuator to lift the valve core 8 is reduced. After the fastening bolt 13 is screwed into the top of the valve body 10, the upper valve cover 1 is clamped and installed on the top of the valve body 10. In order to strengthen the installation of the fastening bolt 13, the assembly plate 25 is pushed down and inserted into the assembly. In the groove 24, during this process, the rubber band 27 is squeezed and deformed by the assembly groove 24, and the assembly plate 25 drives the push rod 26 to squeeze the two sets of plug-in blocks 17 along the inclined surface 23. As the plug-in blocks 17 drive the traction frame 19 to slide along the limit frame 20, the traction frame 19 squeezes the rubber clamp block 21 and the elastic support frame 22 to deform. The plug-in block 17 clamps the rubber pad block 18 in the screw hole, thereby preventing the fastening bolt 13 from falling out of the screw hole. In order to prevent the push rod 26 from moving back, the stop block 30 is rotated around the limit axis 29 into the slot 34. The rebound force of the rubber band 27 pulls the assembly plate 25 to press tightly against the stop block 30. The stop block 30 blocks the assembly plate 25, thereby preventing the push rod 26 from moving back.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A three-stage perforated valve core regulating valve with an adjusting baffle, comprising a valve body (10), an upper valve cover (1) mounted on the top of the valve body (10) by fastening bolts (13), and a valve stem (2) inserted into the surface of the upper valve cover (1), characterized in that: The valve body (10) is equipped with a leak-proof valve core assembly inside to prevent high pressure from entering the valve core cavity, thus saving the effort required to pull out the leak-proof valve core assembly. The fastening bolt (13) is also equipped with an anti-loosening reinforcement component. The leak-proof valve core assembly includes an upper sleeve (3), a sleeve (4), a sleeve flow hole (5), a valve core flow hole (6), a valve seat flow hole (7), a valve core (8), a valve seat (9), a valve core baffle (11), and an upper sleeve groove (12). The upper sleeve (3) is fixed to the upper valve cover. (1) At the bottom end, the valve seat (9) is fixed inside the valve body (10), the sleeve (4) is clamped between the upper sleeve (3) and the valve seat (9), the valve core (8) is slidably connected in the sleeve (4), and the valve stem (2) passes through the valve core (8). The surface of the sleeve (4) is provided with multiple sleeve flow holes (5), the surface of the valve core (8) is provided with multiple valve core flow holes (6), and the surface of the valve seat (9) is provided with multiple valve seat flow holes (7). The sleeve flow holes (5), the valve core flow holes (6) and the valve... The flow port (7) forms a three-stage perforation structure inside the valve body (10); the valve core (8) has an integrally formed valve core baffle (11) on its surface, the valve core baffle (11) is an annular plate structure, the upper sleeve (3) has an upper sleeve groove (12) on its surface, the upper sleeve groove (12) is an annular groove, the upper sleeve groove (12) and the valve core baffle (11) are matched in size, after the valve core (8) extends and rises, the valve core baffle (11) is inserted into the upper sleeve groove (12), and the valve core baffle (11) The sleeve flow hole (5) is blocked to prevent the high pressure on the outside of the sleeve (4) from entering between the valve core (8) and the sleeve (4) through the sleeve flow hole (5); the anti-detachment reinforcement component includes an elastic support component and a push-limit component. The elastic support component is located at one end of the fastening bolt (13). The elastic support component expands outward and abuts against the inner wall of the screw hole on the outside of one end of the fastening bolt (13). The push-limit component is located at the other end of the fastening bolt (13). The push-limit component blocks and limits the elastic support component.

2. The reducing three-stage perforated valve core regulating valve with adjusting baffle according to claim 1, characterized in that: The elastic support assembly includes a pre-reserved groove (14), a through-hole (15), a pre-reserved hole (16), a plug-in block (17), a rubber pad (18), a traction frame (19), a limiting frame (20), a rubber clamp (21), an elastic support frame (22), and an inclined surface (23). The pre-reserved groove (14) is opened at one end of the fastening bolt (13), the through-hole (15) is opened on the surface of the pre-reserved groove (14), and there are two sets of pre-reserved holes (16). The two sets of pre-reserved holes (16) are respectively opened on two parallel side walls of the pre-reserved groove (14). The plug-in block (17) and the pre-reserved hole (16) correspond one-to-one. The plug-in block (17) is movably inserted into the pre-reserved hole (16), and the inclined surface (23) is opened on the surface of the plug-in block (17) and faces the through-hole (15).

3. A reducing three-stage perforated valve core regulating valve with an adjusting baffle according to claim 2, characterized in that: The inclined surfaces (23) on the surfaces of the two groups of the insertion blocks (17) are distributed in an "eight" shape. The rubber cushion blocks (18) are in an arc-shaped plate structure. The rubber cushion blocks (18) are fixed at one end of the insertion blocks (17) away from the reserved groove (14), and a plurality of separation seams are formed on the surfaces of the rubber cushion blocks (18).

4. A reducing three-stage perforated valve core regulating valve with an adjusting baffle according to claim 3, characterized in that: The limiting frame (20) is in a "C" - shaped plate structure. The limiting frame (20) is fixed on the surface of the insertion block (17), and the limiting frame (20) and the inclined surface (23) are symmetrically distributed with respect to the insertion block (17). The rubber clamping blocks (21) are in a "C" - shaped strip. The rubber clamping blocks (21) are fixed on the surface of the reserved groove (14), and there are two groups of rubber clamping blocks (21). The two groups of rubber clamping blocks (21) respectively correspond to the two parallel side plates of the limiting frame (20), and the side plates of the limiting frame (20) are slidably connected in the rubber clamping blocks (21). The rubber clamping blocks (21) are fixed between the limiting frame (20) and the reserved groove (14). An installation opening is formed on the surface of the limiting frame (20). The installation opening is an oval opening. The elastic support frame (22) is in an oval ring plate. The elastic support frame (22) is fixed in the oval opening.

5. A reducing three-stage perforated valve core regulating valve with an adjusting baffle according to claim 2, characterized in that: The pushing and limiting component includes an assembly groove (24), an assembly plate (25), a push rod (26), a rubber belt (27), a notch (28), a limiting shaft (29), a stop block (30), a through - hole (31), a rubber damping pad (32), a picking groove (33), and a card slot (34). The assembly groove (24) is formed at the other end of the fastening bolt (13). The assembly groove (24) is communicated with the through - hole (15). The assembly plate (25) corresponds to the assembly groove (24). The thickness of the assembly plate (25) is less than the depth of the assembly groove (24). The push rod (26) is fixed on the surface of the assembly plate (25). The push rod (26) is movably inserted into the through - hole (15). The length of the long side of the push rod (26) is equal to the depth of the through - hole (15).

6. A reducing three-stage perforated valve core regulating valve with an adjusting baffle according to claim 5, characterized in that: The rubber belt (27) is fixed on the surface of the assembly plate (25). The two ends of the rubber belt (27) are respectively fixed on the surfaces of the fastening bolts (13) on both sides of the assembly groove (24). There are two groups of rubber belts (27). The two groups of rubber belts (27) are symmetrically distributed with respect to the push rod (26).

7. A reducing three-stage perforated valve core regulating valve with an adjusting baffle according to claim 5, characterized in that: The notch (28) is in an arc - shaped groove. There are two groups of notches (28). The two groups of notches (28) are symmetrically distributed with respect to the assembly groove (24), and the notch (28) is communicated with the assembly groove (24). The limiting shaft (29) is in a "T" - shaped columnar structure. The limiting shaft (29) is fixed on the surface of the notch (28). The limiting shaft (29) penetrates through the through - hole (31). The through - hole (31) is formed on the surface of the stop block (30). The rubber damping pad (32) is fixed at one end of the stop block (30), and the rubber damping pad (32) is clamped between the stop block (30) and the notch (28). The picking groove (33) is formed on the surface of the stop block (30). The card slot (34) is in an arc - shaped groove. The card slot (34) is formed on the surface of the assembly plate (25), and the card slot (34) corresponds to the notch (28) one by one.

Images