Low-pressure-difference opening structure of low-pressure-difference opening check valve

Abstract

The invention relates to the technical field of check valves, and discloses a low-pressure-difference opening structure of a low-pressure-difference opening check valve, which comprises a valve body, a mounting channel is arranged on the top surface of the valve body, the mounting channel penetrates through the surface of the valve body, and a valve core assembly for adjusting the flow of a medium is arranged in the valve body. A quick-release opening assembly used for adjusting opening of the valve element assembly is arranged in the mounting channel, a fixing ring is welded to the inner wall of the valve body, and in the quick-release opening assembly, a telescopic rod can move in a telescopic groove in one end of a fixing rod under the action of a reset spring. The valve element assembly and the valve body can be separated by pressing the telescopic rod into the telescopic groove, when the valve element assembly needs to be installed, the clamping block at one end of the telescopic rod is connected with the valve element assembly, parts in the structure can be independently detached through the design, the maintenance efficiency of the structure is improved, and the maintenance cost of the structure is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of check valves, and in particular to a low-pressure difference opening structure of a low-pressure difference opening check valve. Background Art

[0002] The low pressure difference opening structure of the low pressure difference opening check valve is a device used to control the opening of the check valve. Its working principle is to use the low pressure difference sensor to detect the pressure difference in the pipeline. When the pressure difference reaches the set value, the low pressure difference sensor will output a signal to trigger the low pressure difference opening structure, thereby realizing the opening of the check valve. This structure can be used in many fields, such as pipeline systems in chemical, petroleum, water treatment and other industries, to realize the monitoring and control of pressure difference.

[0003] Most of the components of the existing check valve opening device are an integrated assembly structure with the check valve as a whole, which is not convenient to disassemble. When a component in the low pressure difference opening structure is damaged, the entire structure needs to be repaired and replaced, which not only increases the maintenance cost of the structure, but also takes time and effort to repair, reducing the maintenance efficiency of the structure. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a low-pressure differential opening structure of a low-pressure differential opening check valve, which has the advantages of quick disassembly and installation and high sensitivity, and solves the problem that the structure is inconvenient to disassemble. When components in the low-pressure differential opening structure are damaged, the entire structure needs to be repaired and replaced, which not only increases the maintenance cost of the structure, but also makes the maintenance time-consuming and labor-intensive, thereby reducing the maintenance efficiency of the structure.

[0005] In order to achieve the above-mentioned purpose of reducing structural maintenance costs and improving structural maintenance efficiency, the present invention provides the following technical solutions: including a valve body, the top surface of the valve body is provided with an installation channel, and the installation channel runs through the surface of the valve body, the interior of the valve body is provided with a valve core assembly for adjusting the flow rate of the medium, the installation channel is provided with a quick-release opening assembly for adjusting the opening of the valve core assembly, and the inner wall of the valve body is welded with a fixing ring.

[0006] Preferably, the quick-release opening assembly includes an opening motor, and the output end of the opening motor passes through the surface of the mounting channel, a fixing rod is fixed to the output end of the opening motor, a telescopic slot is opened at one end of the fixing rod, a telescopic rod is arranged in the telescopic slot, and the telescopic rod is movably connected to the telescopic slot, a return spring is arranged between the telescopic rod and the telescopic slot, and two ends of the return spring are respectively fixedly connected to the telescopic rod and the telescopic slot.

[0007] Preferably, a clamping block is fixed at one end of the telescopic rod, a sealing plate is provided between the opening motor and the installation channel, and the output end of the opening motor passes through the sealing plate, and the sealing plate is made of rubber thermoplastic.

[0008] Preferably, the valve core assembly includes a fixed frame and a baffle, mounting grooves are provided on both sides of the baffle, induction rings are provided in the mounting grooves, pressure sensors are arranged in an array between the induction rings and the mounting grooves, and a fixed threaded cylinder is provided on the surface of the baffle.

[0009] Preferably, a movable column is provided on the side of the fixed frame, and the movable column is movably connected to the fixed frame, a limiting block is fixed at one end of the movable column, a slot is provided on the side of the limiting block, and the blocking block is connected with the slot by snapping.

[0010] Preferably, a limiting sleeve is provided on the surface of the movable column, a guide groove is opened on the surface of the movable column, a guide block is fixed on the inner side of the limiting sleeve, and the guide block is movably connected to the guide groove.

[0011] Preferably, a connecting rod is fixed on the surface of the limiting sleeve, and the fixed threaded barrel is movably connected to the connecting rod. A connecting bolt is provided on the surface of the connecting rod, and the bolt is threadedly connected to the fixed threaded barrel.

[0012] Preferably, a cover plate is provided on the top surface of the installation channel, a controller is fixed on the top surface of the cover plate, and the controller is electrically connected to the start motor and the pressure sensor respectively.

[0013] Preferably, a sealing gasket is provided between the cover plate and the installation channel, the sealing gasket is made of rubber thermoplastic, fastening bolts are evenly arranged on the bottom surface of the sealing gasket, fastening nuts are arranged in an array on the top surface of the sealing gasket, and the fastening nuts are threadedly connected to the fastening bolts.

[0014] Preferably, a limiting ring is fixed on the surface of the fixing ring, a sealing ring is embedded at one end of the limiting ring, the sealing ring is made of rubber thermoplastic, connecting rings are provided at both ends of the valve body, connecting holes are arranged in an array on the surface of the connecting ring, and the connecting holes penetrate the connecting ring.

[0015] Compared with the prior art, the present invention provides a low-pressure difference opening structure of a low-pressure difference opening check valve, which has the following beneficial effects: 1. A quick-release opening assembly is provided in the valve body. In the quick-release opening assembly, the telescopic rod can move in the telescopic slot at one end of the fixed rod under the action of the reset spring. When the structure needs to be repaired, the telescopic rod is pressed into the telescopic slot to separate the valve core assembly from the valve body. When the valve core assembly needs to be installed, the block at one end of the telescopic rod is connected to the valve core assembly. These designs enable the components in the structure to be disassembled separately, which not only improves the maintenance efficiency of the structure, but also reduces the maintenance cost of the structure.

[0016] 2. In the valve core assembly, induction rings are provided in the installation grooves on both sides of the baffle, and pressure sensors are arranged in an array between the induction rings and the installation grooves. When the pressures on both sides of the valve core assembly in the check valve are different, the pressure sensor will sense a small pressure difference, and cooperate with the quick-release opening assembly to improve the sensitivity of the structure opening. These designs improve the practicality of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is an overall cross-sectional view of the present invention; Figure 3 It is an exploded view of the overall structure of the present invention; Figure 4 This is a structural exploded view of the quick-release opening assembly of the present invention; Figure 5 It is a structural exploded view of the valve core assembly of the present invention; Figure 6 for Figure 5 A is an enlarged view of the structure.

[0018] Wherein: 1. connecting ring; 2. cover plate; 3. installation channel; 4. valve body; 5. connecting hole; 6. quick-release opening assembly; 601. clamping block; 602. telescopic rod; 603. reset spring; 604. telescopic slot; 605. fixing rod; 606. sealing plate; 607. opening motor; 7. fixing ring; 8. valve core assembly; 801. induction ring; 802. installation slot; 803. fixed threaded barrel; 804. baffle; 805. pressure sensor; 806. fixed frame; 807. connecting rod; 808. connecting bolt; 809. clamping slot; 810. limit block; 811. guide block; 812. guide slot; 813. movable column; 814. limit sleeve; 9. limit ring; 10. sealing ring; 11. controller; 12. fastening nut; 13. sealing gasket; 14. fastening bolt. Implementation

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-6, including a valve body 4, a mounting channel 3 is provided on the top surface of the valve body 4, and the mounting channel 3 runs through the surface of the valve body 4, a valve core assembly 8 for adjusting the flow rate of the medium is provided inside the valve body 4, a quick-release opening assembly 6 for adjusting the opening of the valve core assembly 8 is provided in the mounting channel 3, and a fixing ring 7 is welded on the inner wall of the valve body 4.

[0021] When in use, some components of the valve core assembly 8 are fixed on the inner wall of the installation channel 3. When the valve core assembly 8 is rotated to a certain angle, the central axis of the valve core assembly 8 will coincide with the central axis of the fixing ring 7. Then, under the action of the quick-release opening assembly 6, the valve core assembly 8 will be fitted and separated from the fixing ring 7, thereby practically blocking and connecting the check valve.

[0022] The quick-release opening assembly 6 includes an opening motor 607, and the output end of the opening motor 607 passes through the surface of the installation channel 3. A fixing rod 605 is fixed to the output end of the opening motor 607. A telescopic groove 604 is provided at one end of the fixing rod 605. A telescopic rod 602 is provided in the telescopic groove 604, and the telescopic rod 602 is movably connected to the telescopic groove 604. A return spring 603 is provided between the telescopic rod 602 and the telescopic groove 604, and both ends of the return spring 603 are respectively fixedly connected to the telescopic rod 602 and the telescopic groove 604, a block 601 is fixed at one end of the telescopic rod 602, a sealing plate 606 is provided between the opening motor 607 and the installation channel 3, and the output end of the opening motor 607 passes through the sealing plate 606, and the sealing plate 606 is made of rubber thermoplastic.

[0023] When in use, the opening motor 607 is fixedly connected to the installation channel 3 by bolts. At this time, the function of the sealing plate 606 is to prevent the medium from flowing out from the penetration point. After the opening motor 607 is installed, the telescopic rod 602 in the fixed rod 605 will be pushed out from the telescopic groove 604 under the action of the return spring 603, and then the block 601 at one end of the telescopic rod 602 will be connected to the valve core assembly 8. In the quick-release opening assembly 6, the telescopic rod 602 can move in the telescopic groove 604 at one end of the fixed rod 605 under the action of the return spring 603. When the structure needs to be repaired, the telescopic rod 602 can be pressed into the telescopic groove 604 to separate the valve core assembly 8 from the valve body 4. When the valve core assembly 8 needs to be installed, the block 601 at one end of the telescopic rod 602 can be connected to the valve core assembly 8. These designs enable the components in the structure to be disassembled separately, which not only improves the maintenance efficiency of the structure, but also reduces the maintenance cost of the structure.

[0024] The valve core assembly 8 includes a fixed frame 806 and a baffle 804. The baffle 804 has mounting grooves 802 on both sides. The mounting grooves 802 are provided with induction rings 801. Pressure sensors 805 are arranged in an array between the induction rings 801 and the mounting grooves 802. The surface of the baffle 804 is provided with a fixed threaded cylinder 803. The side of the fixed frame 806 is provided with a movable column 813, and the movable column 813 is movably connected to the fixed frame 806. A limit block 810 is fixed at one end of the movable column 813. A card slot is provided on the side of the limit block 810. 809, and the clamping block 601 is engaged with the clamping slot 809, a limiting sleeve 814 is provided on the surface of the movable column 813, a guide groove 812 is opened on the surface of the movable column 813, a guide block 811 is fixed on the inner side of the limiting sleeve 814, and the guide block 811 is movably connected with the guide groove 812, a connecting rod 807 is fixed on the surface of the limiting sleeve 814, and the fixed threaded tube 803 is movably connected with the connecting rod 807, a connecting bolt 808 is provided on the surface of the connecting rod 807, and the bolt is threadedly connected with the fixed threaded tube 803.

[0025] When in use, the fixed frame 806 is fixed on the inner wall of the installation channel 3, and the movable connection between the movable column 813 and the fixed frame 806 enables the limiting sleeve 814 to be connected to the fixed frame 806, and the guide groove 812 on the surface of the movable column 813 and the guide block 811 on the inner wall of the limiting sleeve 814 prevent the limiting sleeve 814 from rotating on the surface of the movable column 813, and there is also a similar structure on the quick-release opening component 6 for limiting, and then the rotation of the valve core component 8 can be realized through the connection between the clamping block 601 and the clamping groove 809. In the valve core component 8, the mounting grooves 802 on both sides of the baffle 804 are provided with induction rings 801, and pressure sensors 805 are arranged in an array between the induction rings 801 and the mounting grooves 802. When the pressures on both sides of the valve core component 8 in the check valve are different, the pressure sensor 805 will sense a small pressure difference, and cooperate with the quick-release opening component 6 to improve the sensitivity of the structure opening. These designs improve the practicality of the structure.

[0026] A cover plate 2 is provided on the top surface of the installation channel 3, and a controller 11 is fixed on the top surface of the cover plate 2, and the controller 11 is electrically connected to the opening motor 607 and the pressure sensor 805 respectively. A sealing gasket 13 is provided between the cover plate 2 and the installation channel 3, and the sealing gasket 13 is made of rubber thermoplastic. Fastening bolts 14 are evenly arranged on the bottom surface of the sealing gasket 13, and a fastening nut 12 is arranged in an array on the top surface of the sealing gasket 13, and the fastening nut 12 is threadedly connected with the fastening bolt 14. A limiting ring 9 is fixed on the surface of the fixing ring 7, and a sealing ring 10 is inlaid at one end of the limiting ring 9, and the sealing ring 10 is made of rubber thermoplastic. Connecting rings 1 are provided at both ends of the valve body 4, and connecting holes 5 are arranged in an array on the surface of the connecting ring 1, and the connecting holes 5 pass through the connecting ring 1.

[0027] The cover plate 2 on the installation channel 3 facilitates the maintenance of the valve body 4. The function of the sealing gasket 13 is to prevent medium leakage. The function of the limit ring 9 and the sealing ring 10 on the surface of the fixing ring 7 is to ensure the sealing inside the valve body 4. The connecting ring 1 and the connecting hole 5 facilitate the installation of the valve body 4.

[0028] In summary, the valve core assembly 8 includes a fixed frame 806 and a baffle 804, both sides of the baffle 804 are provided with mounting grooves 802, the mounting grooves 802 are provided with induction rings 801, and pressure sensors 805 are arranged in an array between the induction rings 801 and the mounting grooves 802. The surface of the baffle 804 is provided with a fixed threaded cylinder 803, the side of the fixed frame 806 is provided with a movable column 813, and the movable column 813 is movably connected to the fixed frame 806, one end of the movable column 813 is fixed with a limit block 810, and the side of the limit block 810 is provided with a clamping Slot 809, and the clamping block 601 is engaged with the clamping slot 809, a limiting sleeve 814 is provided on the surface of the movable column 813, a guide groove 812 is opened on the surface of the movable column 813, a guide block 811 is fixed on the inner side of the limiting sleeve 814, and the guide block 811 is movably connected with the guide groove 812, a connecting rod 807 is fixed on the surface of the limiting sleeve 814, and the fixed threaded tube 803 is movably connected with the connecting rod 807, a connecting bolt 808 is provided on the surface of the connecting rod 807, and the bolt is threadedly connected with the fixed threaded tube 803.When in use, part of the valve core assembly 8 is fixed on the inner wall of the installation channel 3. When the valve core assembly 8 is rotated to a certain angle, the central axis of the valve core assembly 8 will coincide with the central axis of the fixing ring 7. Then, under the action of the quick-release opening assembly 6, the valve core assembly 8 will be fitted and separated from the fixing ring 7, thereby practically blocking and connecting the check valve. The opening motor 607 is fixedly connected to the installation channel 3 by bolts. At this time, the sealing plate 606 is used to prevent the medium from flowing out from the penetration. After installation, the telescopic rod 602 in the fixed rod 605 will be pushed out from the telescopic groove 604 under the action of the reset spring 603, and then the block 601 at one end of the telescopic rod 602 will be connected to the valve core assembly 8, and the fixed frame 806 will be fixed on the inner wall of the installation channel 3. The movable connection between the movable column 813 and the fixed frame 806 allows the limiting sleeve 814 to be connected to the fixed frame 806, and the guide groove 812 on the surface of the movable column 813 and the guide block 811 on the inner wall of the limiting sleeve 814 are used to The limiting sleeve 814 is prevented from rotating on the surface of the movable column 813, and a similar structure is also provided on the quick-release opening assembly 6 for limiting. Then, the valve core assembly 8 can be rotated by connecting the clamping block 601 with the clamping groove 809. The cover plate 2 on the installation channel 3 is convenient for the maintenance of the main body of the valve body 4. The function of the sealing gasket 13 is to prevent the leakage of the medium. The function of the limiting ring 9 and the sealing ring 10 on the surface of the fixing ring 7 is to ensure the sealing inside the valve body 4. The connecting ring 1 and the connecting hole 5 are convenient for the installation of the valve body 4. The quick-release The opening component 6 includes an opening motor 607, and the output end of the opening motor 607 passes through the surface of the mounting channel 3, and a fixing rod 605 is fixed to the output end of the opening motor 607, and a telescopic groove 604 is opened at one end of the fixing rod 605, and a telescopic rod 602 is arranged in the telescopic groove 604, and the telescopic rod 602 is movably connected to the telescopic groove 604, and a return spring 603 is arranged between the telescopic rod 602 and the telescopic groove 604, and the two ends of the return spring 603 are respectively fixedly connected to the telescopic rod 602 and the telescopic groove 604.

[0029] A clamping block 601 is fixed at one end of the telescopic rod 602, a sealing plate 606 is provided between the opening motor 607 and the installation channel 3, and the output end of the opening motor 607 passes through the sealing plate 606, and the sealing plate 606 is made of rubber thermoplastic. In the quick-release opening component 6, the telescopic rod 602 can move in the telescopic groove 604 at one end of the fixed rod 605 under the action of the return spring 603. When the structure needs to be repaired, the telescopic rod 602 can be pressed into the telescopic groove 604 to separate the valve core component 8 from the valve body 4. When the valve core component 8 needs to be installed, the clamping block 601 at one end of the telescopic rod 602 can be connected to the valve core component 8. These designs enable the components in the structure to be disassembled separately, which not only improves the maintenance efficiency of the structure, but also reduces the maintenance cost of the structure. Induction rings 801 are provided in the installation grooves 802 on both sides of the baffle 804, and pressure sensors 805 are arranged in an array between the induction rings 801 and the installation grooves 802. When the pressures on both sides of the valve core assembly 8 in the check valve are different, the pressure sensor 805 will sense a small pressure difference, and cooperate with the quick-release opening assembly 6 to improve the sensitivity of the structure opening. These designs improve the practicality of the structure.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low pressure difference opening structure of a low pressure difference opening check valve, comprising a valve body (4), characterized in that: The top surface of the valve body (4) is provided with a mounting channel (3), and the mounting channel (3) penetrates the surface of the valve body (4); a valve core assembly (8) for adjusting the flow rate of a medium is provided inside the valve body (4); a quick-release opening assembly (6) for adjusting the opening of the valve core assembly (8) is provided inside the mounting channel (3); and a fixing ring (7) is welded to the inner wall of the valve body (4).

2. A low pressure difference opening structure of a low pressure difference opening check valve according to claim 1, characterized in that: The quick-release opening assembly (6) comprises an opening motor (607), and the output end of the opening motor (607) passes through the surface of the mounting channel (3); a fixing rod (605) is fixed to the output end of the opening motor (607); a telescopic slot (604) is provided at one end of the fixing rod (605); a telescopic rod (602) is provided in the telescopic slot (604), and the telescopic rod (602) is movably connected to the telescopic slot (604); a return spring (603) is provided between the telescopic rod (602) and the telescopic slot (604), and two ends of the return spring (603) are respectively fixedly connected to the telescopic rod (602) and the telescopic slot (604).

3. The low pressure difference opening structure of the low pressure difference opening check valve according to claim 2, characterized in that: A clamping block (601) is fixed to one end of the telescopic rod (602), a sealing plate (606) is provided between the opening motor (607) and the installation channel (3), and the output end of the opening motor (607) passes through the sealing plate (606), and the sealing plate (606) is made of rubber thermoplastic.

4. The low pressure difference opening structure of the low pressure difference opening check valve according to claim 3, characterized in that: The valve core assembly (8) comprises a fixed frame (806) and a baffle (804), mounting grooves (802) are provided on both sides of the baffle (804), induction rings (801) are provided in the mounting grooves (802), pressure sensors (805) are arranged in an array between the induction rings (801) and the mounting grooves (802), and a fixed threaded cylinder (803) is provided on the surface of the baffle (804).

5. The low pressure difference opening structure of the low pressure difference opening check valve according to claim 4, characterized in that: A movable column (813) is provided on the side of the fixed frame (806), and the movable column (813) is movably connected to the fixed frame (806); a limiting block (810) is fixed to one end of the movable column (813); a clamping slot (809) is provided on the side of the limiting block (810), and the clamping block (601) is clamped and connected to the clamping slot (809).

6. A low pressure difference opening structure of a low pressure difference opening check valve according to claim 5, characterized in that: A limiting sleeve (814) is provided on the surface of the movable column (813), a guide groove (812) is opened on the surface of the movable column (813), a guide block (811) is fixed on the inner side of the limiting sleeve (814), and the guide block (811) is movably connected to the guide groove (812).

7. The low pressure difference opening structure of the low pressure difference opening check valve according to claim 6, characterized in that: A connecting rod (807) is fixed on the surface of the limiting sleeve (814), and the fixed threaded barrel (803) is movably connected to the connecting rod (807). A connecting bolt (808) is provided on the surface of the connecting rod (807), and the bolt is threadedly connected to the fixed threaded barrel (803).

8. The low pressure difference opening structure of the low pressure difference opening check valve according to claim 7, characterized in that: A cover plate (2) is provided on the top surface of the installation channel (3), a controller (11) is fixed on the top surface of the cover plate (2), and the controller (11) is electrically connected to the start motor (607) and the pressure sensor (805), respectively.

9. The low pressure difference opening structure of the low pressure difference opening check valve according to claim 8, characterized in that: A sealing gasket (13) is provided between the cover plate (2) and the installation channel (3); the sealing gasket (13) is made of rubber thermoplastic; fastening bolts (14) are evenly arranged on the bottom surface of the sealing gasket (13); fastening nuts (12) are arranged in an array on the top surface of the sealing gasket (13); and the fastening nuts (12) are threadedly connected to the fastening bolts (14).

10. The low pressure difference opening structure of the low pressure difference opening check valve according to claim 1, characterized in that: A limit ring (9) is fixed on the surface of the fixing ring (7), a sealing ring (10) is embedded at one end of the limit ring (9), and the sealing ring (10) is made of rubber thermoplastic. Connecting rings (1) are provided at both ends of the valve body (4), and connecting holes (5) are arranged in an array on the surface of the connecting ring (1), and the connecting holes (5) penetrate the connecting ring (1).

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