Mechanical adjusting and controlling return valve

Abstract

The utility model belongs to the technical field of return valves, and discloses a mechanical adjustment control return valve which comprises a valve body, a connector is fixedly mounted in the middle of the top end of the valve body, a pressure relief spring sleeve is arranged at the top end of the connector, and a dismounting mechanism is arranged at the joint of the pressure relief spring sleeve and the connector. Flange plates are fixedly connected to the two end faces of the valve body, a plurality of mounting holes are circumferentially and evenly formed in inner cavities in the peripheries of the two flange plates, protection mechanisms are arranged on the outer sides of the two flange plates and symmetrically distributed on the two sides of the valve body, and an auxiliary mechanism is arranged at the top end of the pressure relief spring sleeve. By means of the arranged valve body, main body bearing can be conducted on the structure on the valve body, meanwhile, a pressure backflow valve for pipeline fluid can be formed in cooperation with the arranged connector, the pressure relief spring sleeve and the dismounting and mounting mechanism, and meanwhile the dismounting, mounting and replacing effects of a spring for pressure relief can be achieved conveniently.

Description

Technical Field

[0001] The present application relates to the technical field of reflux valves, and more specifically, to a mechanically adjustable and controlled reflux valve. Background Art

[0002] The pressure reflux valve is a valve used to prevent the pump from being damaged due to excessive pressure. When the medium pressure in the pipeline or other device connected to the pump exceeds the set value, the reflux valve will automatically release the pressure to achieve the purpose of safety protection. The typical structure of the pressure reflux valve is a piston-type safety reflux valve. The valve core is a flat plate. The medium pressure acts on the piston A. When the pressure exceeds the safety value determined by the spring force, the piston A is pushed open, and a part of the medium is discharged and refluxed from the valve port. When the pressure is lower than the safety value, the spring drives the piston downward to close the valve port.

[0003] The public (announcement) number CN218347992U disclosed a pressure reflux valve, including a valve body and a pressure relief spring sleeve, a joint is fixed on the top of the valve body, a flange platform a is fixed on the top of the joint, a flange platform b matched with the flange platform a is fixed on the bottom of the pressure relief spring sleeve, a sealing rubber ring is arranged between the flange platform a and the flange platform b, an outer sleeve plate is fixed on the outer side wall of the joint, and a limit mechanism is threadedly connected on the side wall of the outer sleeve plate, etc.; this application can solve the problem that the pressure relief spring sleeve on the existing piston-type safety reflux valve is fixedly connected to the valve body by multiple bolts, which leads to inconvenient disassembly and assembly, time-consuming and labor-intensive, and inconvenient maintenance;

[0004] Moreover, during use, the application realizes the assembly connection with the external pipeline through the flanges at both ends of the valve body. However, the flange connection structure used in the application is relatively simple and it is difficult to achieve a good anti-leakage effect, so that after long-term use, the whole is prone to leakage problems at the connection with the external pipeline, which can easily cause unnecessary losses.

[0005] In order to solve the above problems, the present application provides a mechanical regulating and controlling reflux valve. Utility Model Content

[0006] The present application provides a mechanical regulating control reflux valve adopting the following technical solution:

[0007] A mechanical regulating and controlling reflux valve comprises a valve body, a joint is fixedly mounted in the middle of the top end of the valve body, a pressure relief spring sleeve is arranged at the top end of the joint, a disassembly and assembly mechanism is arranged at the connection between the pressure relief spring sleeve and the joint, the two ends of the valve body are respectively a fluid inlet and an outlet, and flanges are fixedly connected to the two end surfaces of the valve body, a plurality of mounting holes are uniformly opened in the inner cavities around the two groups of flanges, and protective mechanisms are arranged on the outer sides of the two groups of flanges, the two groups of protective mechanisms are symmetrically distributed on both sides of the valve body, and an auxiliary mechanism is arranged at the top end of the pressure relief spring sleeve.

[0008] Through the above technical solution, the disassembly and assembly mechanism is utilized to realize the disassembly and assembly function between the joint and the pressure relief spring sleeve, thereby facilitating the replacement of the spring parts used for pressure relief.

[0009] Furthermore, the protective mechanism includes two groups of arc sleeves, both of which are semicircular structures, and are symmetrically arranged on the outside of the side of the flange away from the valve body. The inner walls of the two groups of arc sleeves are fixedly installed with sealing strips, and the inner walls of the two groups of sealing strips are in contact with the outer wall of one side of the flange. Adjustment components are symmetrically arranged on the front and rear sides of the two groups of arc sleeves, and limit components are symmetrically arranged on the upper and lower sides of the two groups of arc sleeves.

[0010] Through the above technical solution, the arc sleeve and the sealing strip are utilized to achieve sleeve installation on the outer wall of the flange while improving the sealing effect of the outer wall.

[0011] Furthermore, the adjusting assembly includes a mounting plate fixedly mounted on an outer wall of one side of the valve body, a column block is fixedly mounted on one end face of the mounting plate, a slide groove is provided in the central inner cavity of one side of the column block, a slider is movably sleeved on the inner wall of the slide groove, the slider and the slide groove are both in a "T" shape, and an adjusting bolt is fixedly connected to one end face of the slider, a sliding rod is provided on one side edge of the column block, the sliding rod is fixedly mounted on one end face of the mounting plate, and a connecting arm is commonly provided on the outer wall of the sliding rod and the adjusting bolt.

[0012] Through the above technical solution, the provided sliding rod is utilized to achieve the movement limiting effect on the connecting arm.

[0013] Furthermore, the connecting arm is a "Z"-shaped strip structure, one end of the connecting arm is fixedly connected to a side wall of the middle part of a group of arc-shaped sleeves, one side of the connecting arm is threadedly connected to the threaded end of the adjusting bolt, and the inner cavity of the connecting arm is movably connected to the outer wall of the sliding rod.

[0014] Through the above technical solution, the provided connecting arm is utilized to realize the function of an adjustable connecting bridge between the adjusting bolt and the arc sleeve.

[0015] Furthermore, the limiting assembly includes a first extension block and a second extension block, and the first extension block and the second extension block are respectively fixedly mounted on the outer walls of the two groups of arc-shaped sleeves close to one side end, the inner cavity of the first extension block is fixedly sleeved with a sleeve, and the inner wall of the sleeve is movably sleeved with a limiting rod, and the limiting rod is fixedly mounted on an end surface of the second extension block facing the first extension block.

[0016] Through the above technical solution, the provided limiting assembly is utilized to achieve a horizontal movement limiting effect between the two sets of arc sleeves.

[0017] Furthermore, the auxiliary mechanism includes an inner disk movably sleeved on the inner side of the top of the pressure relief spring sleeve, a vertical screw is fixedly connected to the center of the top of the inner disk, the vertical screw passes through the inner cavity of the top of the pressure relief spring sleeve, and a rotating wheel is fixedly connected to the outer wall of the top of the vertical screw.

[0018] Through the technical solution, the rotating wheel is used to facilitate the rotation of the vertical screw.

[0019] Furthermore, the auxiliary mechanism also includes a nut member that is fixedly sleeved through the central inner cavity at the top end of the pressure relief spring sleeve, and the inner wall of the nut member is threadedly connected to the thread groove of the outer wall of the vertical screw rod through an internal thread.

[0020] Through the above technical solution, the vertical screw rod and nut member are utilized to achieve the effect of adjusting the height of the inner disk and positioning.

[0021] In summary, this application includes the following beneficial technical effects:

[0022] The valve body is provided to mainly support the upper structure, and in conjunction with the provided joint, pressure relief spring sleeve and disassembly and assembly mechanism, it can form a pressure reflux valve for pipeline fluid, and facilitate the disassembly and replacement of the spring used for pressure relief. The flanges provided at both ends of the valve body can be assembled and connected with the external pipeline, and in conjunction with the protective mechanism provided on the outer wall of the flange, a good anti-leakage protection effect can be achieved at the connection between the flange and the external pipeline, thereby avoiding unnecessary losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of this application;

[0024] Figure 2 This is a schematic diagram of the structure of the regulating component of this application;

[0025] Figure 3 A semi-exploded diagram of the limit assembly of this application;

[0026] Figure 4 It is a side cross-sectional view of the top end of the pressure relief spring sleeve of the present application.

[0027] Description of the numbers in the figure:

[0028] 1. Valve body; 2. Joint; 3. Pressure relief spring sleeve; 4. Disassembly and assembly mechanism; 5. Flange; 6. Protection mechanism; 61. Arc sleeve; 62. Sealing strip; 63. Adjustment assembly; 631. Mounting plate; 632. Column block; 633. Slide groove; 634. Slider; 635. Adjustment bolt; 636. Slide rod; 637. Connecting arm; 64. Limiting assembly; 641. First extension block; 642. Second extension block; 643. Sleeve; 644. Limiting rod; 7. Auxiliary mechanism; 71. Inner plate; 72. Vertical screw; 73. Rotor; 74. Nut. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0030] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] Example:

[0033] The present application discloses a mechanically adjustable control reflux valve. Figure 1, comprising a valve body 1, a joint 2 is fixedly installed in the middle of the top of the valve body 1, a pressure relief spring sleeve 3 is provided at the top of the joint 2, a disassembly mechanism 4 is provided at the connection between the pressure relief spring sleeve 3 and the joint 2, the two ends of the valve body 1 are respectively a fluid inlet and an outlet, and flanges 5 are fixedly connected to the two end surfaces of the valve body 1, a plurality of mounting holes are uniformly opened in the inner cavity of the outer periphery of the two groups of flanges 5, and protective mechanisms 6 are provided on the outer sides of the two groups of flanges 5, and the two groups of protective mechanisms 6 are symmetrically distributed on both sides of the valve body 1, and an auxiliary mechanism 7 is provided at the top of the pressure relief spring sleeve 3.

[0034] See also Figure 1 , Figure 2 and Figure 3 The protection mechanism 6 includes two groups of arc sleeves 61, both of which are semicircular structures, and the two groups of arc sleeves 61 are symmetrically arranged on the outside of the side of the flange 5 away from the valve body 1, and the inner walls of the two groups of arc sleeves 61 are fixedly installed with sealing strips 62, and the inner walls of the two groups of sealing strips 62 are in contact with the outer wall of one side of the flange 5. The front and rear sides of the two groups of arc sleeves 61 are symmetrically provided with adjustment components 63, and the upper and lower sides of the two groups of arc sleeves 61 are symmetrically provided with limit components 64;

[0035] The adjusting component 63 comprises a mounting plate 631 fixedly mounted on the outer wall of one side of the valve body 1, a column block 632 is fixedly mounted on one end face of the mounting plate 631, a slide groove 633 is provided in the central inner cavity on one side of the column block 632, a slider 634 is movably sleeved on the inner wall of the slide groove 633, the slider 634 and the slide groove 633 are both in a "T"-shaped structure, and an adjusting bolt 635 is fixedly connected to one end face of the slider 634, a slide rod 636 is provided on one side edge of the column block 632, the slide rod 636 is fixedly mounted on one end face of the mounting plate 631, and a connecting arm 637 is commonly provided on the outer wall of the slide rod 636 and the adjusting bolt 635, the connecting arm 637 is in a "Z"-shaped strip structure, one end of the connecting arm 637 is fixedly connected to one side wall of the middle part of a group of arc-shaped sleeves 61, one side of the connecting arm 637 is screwed to the threaded end of the adjusting bolt 635, and the inner cavity of the connecting arm 637 is movably sleeved on the outer wall of the slide rod 636;

[0036] The outer wall of the non-threaded end of the adjusting bolt 635 is uniformly provided with a plurality of anti-skid grooves, and each anti-skid groove is in a semicircular groove structure. The provision of the anti-skid groove on the non-threaded end of the adjusting bolt 635 is conducive to improving the labor-saving effect of twisting and rotating the adjusting bolt 635 when adjusting the horizontal position of the connecting arm 637 by using the adjusting bolt 635. In addition, the provided sliding groove 633 and the sliding block 634 cooperate with the limitation of the two structures to achieve the stable receiving and anti-slip effect of the adjusting bolt 635 without hindering the rotation of the adjusting bolt 635.

[0037] The limiting assembly 64 includes a first extension block 641 and a second extension block 642. The first extension block 641 and the second extension block 642 are respectively fixedly installed on the outer walls of the two groups of arc-shaped sleeves 61 close to one side end. The inner cavity of the first extension block 641 is fixedly sleeved with a sleeve 643, and the inner wall of the sleeve 643 is movably sleeved with a limiting rod 644. The limiting rod 644 is fixedly installed on an end surface of the second extension block 642 facing the first extension block 641.

[0038] See also Figure 1 and Figure 4 The auxiliary mechanism 7 includes an inner disk 71 movably sleeved on the inner side of the top of the pressure relief spring sleeve 3, a vertical screw 72 is fixedly connected to the center of the top of the inner disk 71, the vertical screw 72 passes through the inner cavity of the top of the pressure relief spring sleeve 3, and a rotating wheel 73 is fixedly connected to the outer wall of the top of the vertical screw 72;

[0039] The auxiliary mechanism 7 also includes a nut member 74 which is fixedly sleeved in the central inner cavity at the top of the pressure relief spring sleeve 3, and the inner wall of the nut member 74 is screwed to the thread groove on the outer wall of the vertical screw rod 72 through an internal thread;

[0040] Among them, through the auxiliary mechanism 7 arranged at the top of the pressure relief spring sleeve 3, the inner disk 71, the vertical screw 72, the rotating wheel 73 and the nut member 74 arranged inside it can be used to adjust and position the vertical position of the inner disk 71, and at the same time, the elastic force of the pressure relief spring parts assembled inside the pressure relief spring sleeve 3 can be adjusted, thereby indirectly adjusting its internal pressure relief effect of the valve body 1, and realizing the mechanical adjustment and control benefit of the overall reflux valve.

[0041] The implementation principle of this embodiment is: when in use, the whole is in a complete assembly state, wherein the disassembly and assembly mechanism 4 provided at the connection between the joint 2 and the pressure relief spring sleeve 3 is classified as the existing structure protected in the comparative document publication number: CN218347992U, and the structure and the use principle are consistent with those in the comparative document, and are not specifically described here, and the classified disassembly and assembly mechanism 4 includes the "limiting mechanism, outer sleeve plate, rotating handle, rubber sleeve, limiting plate, flange platform a, flange platform b and rubber sealing ring" in the comparative document;

[0042] When the valve body 1 is assembled and connected with the external pipeline, the connecting arm 637 is firstly driven to move horizontally on its outer wall by the rotation of each set of adjusting bolts 635, and indirectly drives a set of arc sleeves 61 and sealing strips 62 away from the outer wall of the flange 5. In this process, the slider 634 rotates on the inner wall of the slide groove 633, and the connecting arm 637 performs limited sliding on the outer wall of the slide rod 636. When the first extension block 641 and the second extension block 642 move away from each other, the limit rod 644 performs limited sliding on the inner wall of the sleeve 643.

[0043] Then, the flange connected to the external pipeline is connected to the flange plate 5 at the side end of the valve body 1, and the two are assembled and fixed by using the mounting holes and bolt parts. After that, each set of adjusting bolts 635 is operated again to horizontally reset each set of connecting arms 637, thereby indirectly resetting each set of arc sleeves 61 and sealing strips 62 on the outer wall of the flange plate 5, thereby realizing the anti-leakage effect at the connection between the reflux valve and the external pipeline.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A mechanical regulating and controlling reflux valve, comprising a valve body (1), characterized in that: A joint (2) is fixedly installed in the middle of the top of the valve body (1), a pressure relief spring sleeve (3) is provided at the top of the joint (2), and a disassembly mechanism (4) is provided at the connection between the pressure relief spring sleeve (3) and the joint (2), the two ends of the valve body (1) are respectively a fluid inlet and an outlet, and flanges (5) are fixedly connected to the two end surfaces of the valve body (1), the inner cavities of the outer peripheries of the two groups of flanges (5) are uniformly provided with a plurality of mounting holes, and the outer sides of the two groups of flanges (5) are provided with protective mechanisms (6), and the two groups of protective mechanisms (6) are symmetrically distributed on both sides of the valve body (1), and an auxiliary mechanism (7) is provided at the top of the pressure relief spring sleeve (3); The protection mechanism (6) comprises two groups of arc-shaped sleeves (61), both groups of the arc-shaped sleeves (61) are semicircular in structure, and the two groups of the arc-shaped sleeves (61) are symmetrically arranged on the outside of the side of the flange (5) away from the valve body (1), the inner walls of the two groups of the arc-shaped sleeves (61) are fixedly installed with sealing strips (62), the inner walls of the two groups of the sealing strips (62) are in contact with the outer wall of one side of the flange (5), the front and rear sides of the two groups of the arc-shaped sleeves (61) are symmetrically provided with adjustment components (63), and the upper and lower sides of the two groups of the arc-shaped sleeves (61) are symmetrically provided with limit components (64); The auxiliary mechanism (7) comprises an inner plate (71) movably sleeved on the inner side of the top of the pressure relief spring sleeve (3); a vertical screw (72) is fixedly connected to the center of the top of the inner plate (71); the vertical screw (72) passes through the inner cavity of the top of the pressure relief spring sleeve (3); and a rotating wheel (73) is fixedly connected to the outer wall of the top of the vertical screw (72); The auxiliary mechanism (7) also includes a nut member (74) which is fixedly sleeved in the central inner cavity at the top end of the pressure relief spring sleeve (3) in a penetrating manner, and the inner wall of the nut member (74) is threadedly connected to the thread groove on the outer wall of the vertical screw rod (72) through an internal thread.

2. A mechanical regulating and controlling reflux valve according to claim 1, characterized in that: The adjustment component (63) includes a mounting plate (631) fixedly mounted on an outer wall of one side of the valve body (1), a column block (632) fixedly mounted on one end face of the mounting plate (631), a slide groove (633) is provided in a central inner cavity on one side of the column block (632), a slider (634) is movably sleeved on the inner wall of the slide groove (633), the slider (634) and the slide groove (633) are both in a "T" shape, and an adjustment bolt (635) is fixedly connected to one end face of the slider (634), a slide rod (636) is provided on one side edge of the column block (632), the slide rod (636) is fixedly mounted on one end face of the mounting plate (631), and a connecting arm (637) is provided on the outer walls of the slide rod (636) and the adjustment bolt (635).

3. A mechanical regulating and controlling reflux valve according to claim 2, characterized in that: The connecting arm (637) is in a "Z"-shaped strip structure, one end of the connecting arm (637) is fixedly connected to a side wall of the middle part of a set of arc-shaped sleeves (61), one side of the connecting arm (637) is threadedly connected to the threaded end of the adjusting bolt (635), and the inner cavity of the connecting arm (637) is movably sleeved with the outer wall of the sliding rod (636).

4. The mechanical regulating and controlling reflux valve according to claim 1, characterized in that: The limiting assembly (64) comprises a first extension block (641) and a second extension block (642). The first extension block (641) and the second extension block (642) are respectively fixedly mounted on the outer walls of the two groups of arc-shaped sleeves (61) close to one side end. The inner cavity of the first extension block (641) is fixedly sleeved with a sleeve (643). The inner wall of the sleeve (643) is movably sleeved with a limiting rod (644). The limiting rod (644) is fixedly mounted on an end surface of the second extension block (642) facing the first extension block (641).

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