A flat gate valve with an adjustable installation structure

Abstract

The present invention relates to the field of flat gate valves, specifically a flat gate valve with an adjustable mounting structure, including a gate valve body, gate valve through holes running through the left and right sides of the gate valve body, a flat valve core installed in the gate valve body, a valve core bolt rotatably connected in the middle of the top of the gate valve body, two valve core filter holes symmetrical up and down running through the flat valve core, a filter installed inside the valve core filter hole, a filter disassembly and assembly mechanism capable of installing filter elements in the two valve core filter holes is installed on the left and right sides of the upper and lower ends of the gate valve body, a flange connection seat is installed on the left and right sides of the gate valve body, and the flange connection seat is provided with flange connection grooves of different diameters at one end away from the gate valve body, so that it can connect flanges of different diameters. The present invention can connect pipelines of different diameters at both ends of the flat gate valve through two flange connection seats, thereby realizing the application of the flat gate valve in pipeline paths of different sizes.

Description

Technical Field

[0001] The invention relates to the technical field of flat gate valves, and in particular to a flat gate valve with an adjustable mounting structure. Background Art

[0002] The flat gate valve is a sliding valve with a parallel gate plate as the closing part. There are two main types of existing flat gate valves: flat gate valves without diversion holes and flat gate valves with diversion holes. Flat gate valves are suitable for natural gas, petroleum, chemical, environmental protection, urban pipelines, gas pipelines and other transmission pipelines, venting systems and steam storage devices, as opening and closing equipment. The existing flat gate valves have relatively single sizes of flanges at both ends for connecting pipelines, and cannot be adjusted according to the size of the pipeline. As a result, the flat gate valve can only be installed and connected to pipelines of a single diameter, and cannot be adapted to be installed in pipelines of different diameters, let alone connect two pipelines of different diameters. At this time, it is necessary to manufacture flat gate valves of different specifications that meet the requirements according to the pipeline size.

[0003] In addition, when the existing flat gate valve is installed, a filter device is installed at the flange connection position (generally installed at the front end of the flat gate valve). However, after a period of use, the filter device needs to be replaced. However, replacing the filter device is troublesome and requires disassembly of multiple things. The filter device is inconvenient to replace and the operation is cumbersome.

[0004] Therefore, the present invention provides a flat gate valve with an adjustable installation structure to solve the above problems. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a flat gate valve with an adjustable mounting structure to solve the defects of the existing flat gate valve when in use.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A flat gate valve with an adjustable mounting structure comprises a gate valve body with a hollow interior, a gate valve through hole is penetrated between the middle parts of the left and right sides of the gate valve body, a flat valve core is slidably mounted inside the gate valve body, a valve core nut is fixedly mounted in the middle part of the top of the gate valve body, a valve core bolt which penetrates into the gate valve body and is rotatably connected to the top of the flat valve core is threadedly mounted in the middle part of the valve core nut, two valve core filter holes symmetrically positioned up and down are penetrated between the left and right sides of the flat valve core, a filter is installed inside the valve core filter hole, a filter disassembly and assembly mechanism capable of installing filter elements in the two valve core filter holes is installed on the left and right sides of the upper and lower ends of the gate valve body, a flange connection seat which is transparent at both ends and coaxially connected with the gate valve through hole is fixedly mounted on the left and right sides of the gate valve body, a flange connection groove of different diameters is coaxially arranged at one end of the flange connection seat away from the gate valve body, so that the flange connection seat can connect flanges of different diameters, a guide adjustment mechanism is installed in the flange connection groove on each of the flange connection seats, and a sewage discharge mechanism is installed inside the flange connection seat.

[0008] Preferably, the filter element comprises a filter ring and a filter material located inside the filter ring, the filter material is made of activated carbon, and the filter ring is installed in the filter hole of the valve core.

[0009] Preferably, the diameter of the valve core filter hole is larger than the diameter of the gate valve through hole, so that when the valve core filter hole is aligned and connected with the gate valve through hole, the left and right inner walls of the gate valve body can resist the left and right ends of the filter ring.

[0010] Preferably, the filter disassembly mechanism comprises a filter disassembly hole, a disassembly spring tube, a disassembly slide rod, a disassembly spring, a filter disassembly plate, a disassembly connecting plate, and a filter ring push plate;

[0011] The left and right side surfaces at the upper and lower ends of the gate valve body are penetrated by filter disassembly holes, the diameter of the filter disassembly holes is the same as the diameter of the valve core filter hole, the front and rear sides of the upper and lower ends of the gate valve body are fixedly installed with internal hollow disassembly spring tubes, the interior of each disassembly spring tube is coaxially slidably installed with a disassembly slide rod, and the interior of the disassembly spring tube is installed with a disassembly spring connected to the disassembly slide rod, the left and right side surfaces of the gate valve body are installed with filter disassembly plates coaxial with the position of the filter disassembly hole, each of the filter disassembly plates is fixedly connected to one of the disassembly slide rods with a disassembly connecting plate, and a filter ring push plate located in the filter disassembly hole is fixedly installed on the side surface of each filter disassembly plate facing the filter disassembly hole.

[0012] Preferably, the flange connection groove comprises a first flange connection groove and a second flange connection groove, a first flange connection groove is provided on the side of the flange connection seat away from the gate valve body in the direction of the gate valve body, a second flange connection groove is provided inside the first flange connection groove in the direction of the gate valve body, a diameter of the second flange connection groove is smaller than a diameter of the first flange connection groove, flange mounting screw holes are axially provided on the end face of the flange connection seat and the end faces of the first flange connection groove and the second flange connection groove, a plurality of diversion adjustment grooves are provided on the circumferential surfaces of the first flange connection groove and the second flange connection groove, and the guide adjustment mechanism is installed in the plurality of diversion adjustment grooves.

[0013] Preferably, the guide adjustment mechanism comprises a guide inclined arc plate, a guide plate sliding hole, a guide plate sliding rod, a pressure ball, and a guide plate tension spring;

[0014] A guide bevel arc plate is radially slidably installed in each of the guide adjustment grooves, and a guide bevel is provided on the side of the guide bevel arc plate away from the gate valve body. When the guide bevel arc plate is closed toward the middle, a complete guide cone ring can be formed, and a guide plate sliding hole is penetrated between each of the guide adjustment grooves and the outer side surface of the flange connection seat, and a guide plate sliding rod fixedly connected to the guide bevel arc plate is radially slidably installed in each of the guide plate sliding holes, a pressure ball is connected to the end of the guide plate sliding rod located on the outer side of the flange connection seat, and a guide plate tension spring mounted on the outside of the guide plate sliding rod is fixedly connected between the inner side surface of the guide adjustment groove and the outer side surface of the guide bevel arc plate.

[0015] Preferably, the guide adjustment mechanism further includes a guide drive ring, a guide drive swivel, a pressing arc plate, a drive rack, a drive gear, and a drive handle;

[0016] Two guide drive ring cylinders with openings on the inner side surfaces are coaxially fixedly installed on the outer side surface of the flange connecting seat, and the multiple pressure balls on the same cross section are all located in one of the guide drive ring cylinders. A guide drive swivel is coaxially rotatably installed on the inner circumferential surface of each guide drive ring cylinder, and a plurality of pressing arc plates that are evenly distributed in the circumference and abut against the pressure balls are fixedly installed on the inner side surface of the guide drive swivel. A driving rack is fixedly installed on the inner side surface of the guide drive swivel, and a driving gear that meshes with the driving rack is rotatably installed on the inner side surface of the guide drive ring cylinder. The driving gear is coaxially fixedly connected with a driving handle located on the outer side of the guide drive ring cylinder.

[0017] Preferably, the sewage discharge mechanism comprises a backflow prevention cone ring, a sewage discharge groove, and a sewage discharge groove sealing block;

[0018] A plurality of anti-backflow cone rings are coaxially fixedly installed inside the flange connection seat, and the end with a smaller diameter of the anti-backflow cone ring faces the gate valve body. A drain groove runs through the bottom of the flange connection seat, and a drain groove sealing block is detachably installed in the drain groove by bolts.

[0019] The beneficial effects of the present invention are:

[0020] 1. In the present invention, the filter element can be detachably installed inside the two valve core filter holes, and filter disassembly and assembly mechanisms capable of installing the filter element in the two valve core filter holes are installed on the left and right side surfaces at the upper and lower ends of the gate valve body. When one of the valve core filter holes is aligned and connected with the gate valve through hole, the other valve core filter hole is aligned with the filter disassembly and assembly mechanism, and the filter disassembly and assembly mechanism can quickly replace the filter element inside it without affecting the filter element in use. Compared with the replacement of the filter device in the prior art, the filter disassembly and assembly mechanism makes the replacement of the filter element more convenient and quick.

[0021] 2. The left and right sides of the gate valve body are fixedly installed with flange connection seats that are transparent at both ends and coaxially connected with the gate valve through hole. The flange connection seat is coaxially provided with flange connection grooves of different diameters at one end away from the gate valve body, so that the flange connection seat can connect flanges of different diameters. According to the diameter of the flange on the outside of the pipeline, the flange can be made to enter the flange connection groove of the corresponding diameter and connected by bolts. Through the two flange connection seats, the two ends of the flat gate valve can be connected to pipelines of different diameters, thereby realizing the application of the flat gate valve in pipeline paths of different sizes.

[0022] 3. The flange connection groove on the flange connection seat is equipped with a guide adjustment mechanism. When the pipeline flange is connected to the flange connection seat (such as the attached Figure 4 As shown in the figure, in order to prevent the end face of the flange connection groove from causing resistance to the fluid and thus generating impact force on the end face of the flange connection groove, the end face of the flange connection groove can be shielded by a guide adjustment mechanism, and a slope that shrinks toward the middle can be formed, so that when the fluid passes through the flange connection groove, the resistance to the fluid is reduced.

[0023] 4. A sewage discharge mechanism is installed inside the flange connection seat. After a period of use, some impurities are accumulated at the front end of the filter element. The sewage discharge mechanism can discharge the impurities to the outside of the flange connection seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0025] Figure 2 It is a left view of the present invention.

[0026] Figure 3 It is a front view of the present invention.

[0027] Figure 4 For the present invention Figure 2 Plane section view at AA in the middle.

[0028] Figure 5 For the present invention Figure 2 Stereoscopic cross-sectional view at AA in the middle.

[0029] Figure 6 For the present invention Figure 2 Three-dimensional cross-sectional view at the middle BB.

[0030] Figure 7 For the present invention Figure 3 Stereoscopic cross-sectional view at CC.

[0031] Figure 8 For the present invention Figure 4 Enlarged view of point D in the middle.

[0032] Fig. 9 For the present invention Figure 4 Enlarged view of point E in the middle.

[0033] Fig.10 For the present invention Figure 5 Enlarged view of point F in the middle.

[0034] Fig.11 For the present invention Figure 6 Enlarged view of point G in the middle.

[0035] In the figure: 1. Gate valve body; 2. Gate valve through hole; 3. Flat valve core; 4. Valve core nut; 5. Valve core bolt; 6. Valve core filter hole; 7. Filter element; 8. Filter disassembly mechanism; 9. Flange connection seat; 10. Flange connection groove; 11. Guide adjustment mechanism; 12. Drain mechanism; 701. Filter ring; 702. Filter material; 13. Filter disassembly hole; 14. Disassembly spring tube; 15. Disassembly slide rod; 16. Disassembly spring; 17. Filter disassembly plate; 18. Disassembly connection plate; 19. Filter ring push plate; 101, first flange connection groove; 102, second flange connection groove; 20, flange mounting screw hole; 21, guide adjustment groove; 22, guide inclined arc plate; 23, guide plate sliding hole; 24, guide plate sliding rod; 25, pressure ball; 26, guide plate tension spring; 27, guide drive ring cylinder; 28, guide drive swivel; 29, pressing arc plate; 30, drive rack; 31, drive gear; 32, drive handle; 33, anti-backflow cone ring; 34, drain trough; 35, drain trough sealing block. DETAILED DESCRIPTION

[0036] The following will refer to the attached Figure 1 To Attachment Fig.11 Various embodiments of the present invention are described in detail.

[0037] Embodiment 1, as attached Figure 1-Figure 11 As shown, a flat gate valve with an adjustable installation structure includes a gate valve body 1 with a hollow interior, a gate valve through hole 2 is penetrated between the middle parts of the left and right sides of the gate valve body 1, a flat valve core 3 is slidably installed inside the gate valve body 1, a valve core nut 4 is fixedly installed in the middle part of the top of the gate valve body 1, a valve core bolt 5 that penetrates into the interior of the gate valve body 1 and is rotatably connected to the top of the flat valve core 3 is installed in the middle part of the valve core nut 4, and two valve core filter holes 6 with symmetrical positions in upper and lower positions are penetrated between the left and right sides of the flat valve core 3. A filter element 7 is detachably installed inside the filter hole 6, and a filter disassembly and assembly mechanism 8 capable of installing the filter element 7 in the two valve core filter holes 6 is installed on the left and right side surfaces at the upper and lower ends of the gate valve body 1. When one of the valve core filter holes 6 is aligned and connected with the gate valve through hole 2, the other valve core filter hole 6 is aligned with the filter disassembly and assembly mechanism 8, and the filter disassembly and assembly mechanism 8 can quickly replace the filter element 7 inside it without affecting the filter element 7 in use. Compared with the replacement of the filter device in the prior art, the filter disassembly and assembly mechanism 8 makes the replacement of the filter element 7 more convenient and quick.

[0038] The left and right sides of the gate valve body 1 are fixedly installed with flange connection seats 9 which are transparent at both ends and coaxially connected with the gate valve through hole 2. The flange connection seat 9 is coaxially provided with flange connection grooves 10 of different diameters at one end away from the gate valve body 1, so that the flange connection seat 9 can be connected to flanges of different diameters. According to the diameter of the flange on the outside of the pipeline, the flange can enter the flange connection groove 10 of the corresponding diameter and be connected by bolts. The pipeline connected to the flange connection seat 9 in the accompanying drawings has its flange fixedly connected to the end face of the flange connection seat 9. If the diameter of the pipeline flange corresponds to the diameter of the first flange connection groove 10, the pipeline flange can be placed in the first flange connection groove 10 so that the flange is fixedly connected to the end face of the first flange connection groove 10. Through the two flange connection seats 9, the two ends of the flat gate valve can be connected to pipelines of different diameters, thereby realizing the application of the flat gate valve in pipeline paths of different sizes.

[0039] A guide adjustment mechanism 11 is installed in the flange connection groove 10 on each flange connection seat 9. When the pipeline flange is connected to the flange connection seat 9 (as shown in the attached figure), the guide adjustment mechanism 11 is installed in the flange connection groove 10 on each flange connection seat 9. Figure 4 As shown in the figure, in order to prevent the end face of the flange connection groove 10 from causing resistance to the fluid and thus generating impact force on the end face of the flange connection groove 10, the end face of the flange connection groove 10 can be shielded by the guide adjustment mechanism 11, and a slope that shrinks toward the middle can be formed, so that when the fluid passes through the flange connection groove 10, the resistance encountered by the fluid is reduced.

[0040] A sewage discharge mechanism 12 is installed inside the flange connection seat 9 . After a period of use, some impurities are accumulated at the front end of the filter element 7 . The sewage discharge mechanism 12 can discharge the impurities to the outside of the flange connection seat 9 .

[0041] Embodiment 2, based on embodiment 1, the filter element 7 includes a filter ring 701 and a filter material 702 located inside the filter ring 701, the filter material 702 is made of activated carbon, or filter cotton or other materials with filtering properties, and the filter ring 701 can be directly placed and installed in the valve core filter hole 6.

[0042] Embodiment 3, based on embodiment 2, as shown in the attached Figure 8 As shown, the diameter of the valve core filter hole 6 is larger than the diameter of the gate valve through hole 2, so that when the valve core filter hole 6 is aligned and connected with the gate valve through hole 2, the left and right inner walls of the gate valve body 1 can resist the left and right ends of the filter ring 701 to limit it.

[0043] Embodiment 4, based on embodiment 3, as shown in the attached Figure 4-Figure 7 As shown, the filter disassembly mechanism 8 includes a filter disassembly hole 13, a disassembly spring tube 14, a disassembly slide rod 15, a disassembly spring 16, a filter disassembly plate 17, a disassembly connecting plate 18, and a filter ring push plate 19;

[0044] The left and right side surfaces at both upper and lower ends of the gate valve body 1 are penetrated with filter disassembly holes 13, the diameter of the filter disassembly holes 13 is the same as the diameter of the valve core filter hole 6, so that the filter ring 701 can be installed from the filter disassembly hole 13 to the inside of the valve core filter hole 6, the front and rear sides of the upper and lower ends of the gate valve body 1 are fixedly installed with internal hollow disassembly spring tubes 14, each of the disassembly spring tubes 14 is coaxially slidably installed with a disassembly slide rod 15, and the disassembly spring 16 connected with the disassembly slide rod 15 is installed inside the disassembly spring tube 14, and the left and right side surfaces of the gate valve body 1 are installed with filter disassembly plates 17 coaxial with the position of the filter disassembly hole 13, each of the filter disassembly plates 17 is fixedly connected with one of the disassembly slide rods 15 with a disassembly connecting plate 18, and each of the filter disassembly plates 17 is fixedly installed with a filter ring push plate 19 located in the filter disassembly hole 13 on one side of the filter disassembly plate 17 facing the filter disassembly hole 13;

[0045] When the filter element 7 in use needs to be replaced after being used for a period of time, the flat valve core 3 can be moved so that the valve core filter hole 6 at the other end is aligned and connected with the gate valve through hole 2, and the used filter element 7 is moved to the position corresponding to the filter disassembly hole 13 on the same side, and then the filter disassembly plate 17 and the filter ring push plate 19 can be pulled outward. When the filter disassembly plate 17 moves outward, it can drive the disassembly slide rod 15 to move coaxially with the disassembly spring tube 14 and compress the disassembly spring 16, and then a new filter can be put into the filter disassembly hole 13. Filter element 7, then move the filter disassembly plate 17 to the filter disassembly hole 13, and push the new filter element 7 into the valve core filter hole 6 through the filter ring push plate 19, and the new filter element 7 can move the used filter element 7 to the filter disassembly hole 13 on the other side of the gate valve body 1, and can push open the filter disassembly plate 17 and the filter ring push plate 19 on the other side, and finally take out the used filter element 7 moved to the outside. The above method can realize the rapid replacement of the filter element 7 without disassembling any parts, which is convenient and fast.

[0046] Embodiment 5, based on embodiment 1, as shown in the attached Figure 9-11 As shown, the flange connection groove 10 includes a first flange connection groove 101 and a second flange connection groove 102. The first flange connection groove 101 is opened on the side of the flange connection seat 9 away from the gate valve body 1 in the direction of the gate valve body 1. The second flange connection groove 102 is opened inside the first flange connection groove 101 in the direction of the gate valve body 1. The diameter of the second flange connection groove 102 is smaller than the diameter of the first flange connection groove 101. Flange mounting screw holes 20 are axially opened on the end surface of the flange connection seat 9 and the end surfaces of the first flange connection groove 101 and the second flange connection groove 102. The flange plate of the pipeline can be connected to the flange mounting screw holes 20 by bolts. The number of flange connection grooves 10 can be set to multiple. Multiple diversion adjustment grooves 21 are opened on the circumferential surfaces of the first flange connection groove 101 and the second flange connection groove 102, and the guide adjustment mechanism 11 is installed in the multiple diversion adjustment grooves 21.

[0047] Embodiment 6, based on embodiment 5, as shown in the attached Figure 9-11 As shown, the guide adjustment mechanism 11 includes a guide inclined arc plate 22, a guide plate sliding hole 23, a guide plate sliding rod 24, a pressure ball 25, and a guide plate tension spring 26;

[0048] A guide bevel arc plate 22 is radially slidably installed in each of the guide adjustment grooves 21. The number of the guide adjustment grooves 21 in the present invention is four. A guide bevel is arranged on the side of the guide bevel arc plate 22 away from the gate valve body 1. When the guide bevel arc plate 22 is closed toward the middle, a complete guide cone ring can be formed. A guide plate sliding hole 23 is penetrated between each of the guide adjustment grooves 21 and the outer side surface of the flange connection seat 9. A guide plate sliding hole 23 is radially installed in each of the guide plate sliding holes 23. A guide plate slide bar 24 fixedly connected to the guide slope arc plate 22 is slidably installed, and a pressure ball 25 is connected to one end of the guide plate slide bar 24 located outside the flange connection seat 9, and a guide plate tension spring 26 sleeved and installed outside the guide plate slide bar 24 is fixedly connected between the inner side surface of the guide adjustment groove 21 and the outer side surface of the guide slope arc plate 22. When the pressure ball 25 is not subjected to external force, the guide slope arc plate 22 is located in the guide adjustment groove 21 under the traction of the elastic force of the guide plate tension spring 26;

[0049] When the flange connection seat 9 is connected to the pipeline, pressure can be applied to multiple pressurized balls 25 at the same time, so that the multiple guide plate slide rods 24 drive the multiple guide bevel arc plates 22 to close toward the middle, and the guide bevel arc plates 22 stretch the guide plate tension springs 26, so that the multiple guide bevel arc plates 22 are closed to form a complete guide cone ring. The annular inclined surface on the inner side of the guide cone ring can reduce the resistance of the fluid. When the pipeline flange is connected to the second flange connection groove 102, it is only necessary to close the four guide bevel arc plates 22 on the inner side to the middle to form a guide cone ring.

[0050] Embodiment 7, based on embodiment 6, as shown in the attached Figure 9-11 As shown, the guide adjustment mechanism 11 also includes a guide drive ring 27, a guide drive rotating ring 28, a pressing arc plate 29, a drive rack 30, a drive gear 31, and a drive handle 32;

[0051] Two guide drive rings 27 with openings on the inner side are coaxially fixedly installed on the outer side surface of the flange connection seat 9, and the multiple pressure balls 25 on the same cross section are all in one of the guide drive rings 27. A guide drive swivel 28 is coaxially rotatably installed on the inner circumferential surface of each guide drive ring 27. A plurality of pressing arc plates 29 evenly distributed in the circumferential direction and abutting against the pressure balls 25 are fixedly installed on the inner side surface of the guide drive swivel 28. A driving rack 30 is fixedly installed on the inner side surface of the guide drive swivel 28. A driving gear 31 meshing with the driving rack 30 is rotatably installed on the inner side surface of the guide drive ring 27. The driving gear 31 is coaxially fixedly connected with a driving handle 32 located on the outer side of the guide drive ring 27.

[0052] When in use, the driving handle can be used to drive the driving gear 31 to rotate, and the driving gear 31 can drive the driving rack 30 and the diversion driving swivel 28 to rotate, and the diversion driving swivel 28 can drive the four pressing arc plates 29 to move circumferentially, thereby squeezing the four pressurized balls 25 toward the middle, so that the four diversion inclined arc plates 22 are closed toward the middle to form a diversion cone ring.

[0053] Embodiment 8, based on embodiment 1, as shown in the attached Figure 4 , Figure 5 , Figure 8-Figure 10 As shown, the sewage discharge mechanism 12 includes an anti-backflow cone ring 33, a sewage discharge groove 34, and a sewage discharge groove sealing block 35;

[0054] A plurality of anti-backflow cone rings 33 are coaxially fixedly installed inside the flange connection seat 9, and the end with a smaller diameter of the anti-backflow cone ring 33 faces the gate valve body 1. After the filter element 7 has been used for a period of time, if impurities accumulate at the front end thereof, the anti-backflow cone ring 33 can intercept the impurities to prevent the impurities from flowing back. A drain groove 34 runs through the bottom of the flange connection seat 9, and a drain groove sealing block 35 is detachably installed in the drain groove 34 by bolts. The drain groove sealing block 35 can be removed by removing the bolts, so that impurities can be discharged from the drain groove 34.

[0055] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0056] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A flat gate valve with an adjustable mounting structure, comprising a gate valve body (1) with a hollow interior, a gate valve through hole (2) penetrating between the middle of the left and right sides of the gate valve body (1), characterized in that: A flat valve core (3) is slidably mounted up and down inside the gate valve body (1); a valve core nut (4) is fixedly mounted in the middle of the top of the gate valve body (1); a valve core bolt (5) is threadedly mounted in the middle of the valve core nut (4) and penetrates into the gate valve body (1) and is rotatably connected to the top of the flat valve core (3); two valve core filter holes (6) symmetrically positioned up and down are penetrated between the left and right sides of the flat valve core (3); a filter element (7) is mounted inside the valve core filter hole (6); and filters (7) capable of filtering between the two valve core filter holes are mounted on the left and right sides at both ends of the gate valve body (1). (6) a filter disassembly and assembly mechanism (8) in which a filter element (7) is installed, and flange connection seats (9) are fixedly installed on the left and right sides of the gate valve body (1), which are transparent at both ends and coaxially connected to the gate valve through hole (2), and the flange connection seat (9) is coaxially provided with flange connection grooves (10) of different diameters at one end away from the gate valve body (1), so that the flange connection seat (9) can be connected to flanges of different diameters, and a guide adjustment mechanism (11) is installed in the flange connection groove (10) on each of the flange connection seats (9), and a sewage discharge mechanism (12) is installed inside the flange connection seat (9); The filter element (7) comprises a filter ring (701) and a filter material (702) located inside the filter ring (701); the filter material (702) is made of activated carbon; and the filter ring (701) is installed in the filter hole (6) of the valve core; The diameter of the valve core filter hole (6) is greater than the diameter of the gate valve through hole (2), so that when the valve core filter hole (6) is aligned and connected with the gate valve through hole (2), the left and right inner walls of the gate valve body (1) can abut against the left and right ends of the filter ring (701); The filter disassembly mechanism (8) comprises a filter disassembly hole (13), a disassembly spring tube (14), a disassembly slide rod (15), a disassembly spring (16), a filter disassembly plate (17), a disassembly connecting plate (18), and a filter ring push plate (19); The left and right side surfaces at both upper and lower ends of the gate valve body (1) are penetrated by filter disassembly holes (13), the diameter of the filter disassembly holes (13) being the same as the diameter of the valve core filter hole (6), the front and rear sides at both upper and lower ends of the gate valve body (1) are fixedly installed with internally hollow disassembly spring tubes (14), each of the disassembly spring tubes (14) is coaxially slidably installed with a disassembly slide rod (15), and the disassembly spring (16) connected to the disassembly slide rod (15) is installed inside the disassembly spring tube (14), the left and right side surfaces of the gate valve body (1) are installed with filter disassembly plates (17) coaxial with the position of the filter disassembly holes (13), each of the filter disassembly plates (17) is fixedly connected to one of the disassembly slide rods (15) with a disassembly connecting plate (18), and each of the filter disassembly plates (17) is fixedly installed with a filter ring push plate (19) located in the filter disassembly hole (13) on a side surface facing the filter disassembly hole (13); The flange connection groove (10) comprises a first flange connection groove (101) and a second flange connection groove (102); the first flange connection groove (101) is provided on the side of the flange connection seat (9) away from the gate valve body (1) in the direction of the gate valve body (1); the second flange connection groove (102) is provided inside the first flange connection groove (101) in the direction of the gate valve body (1); the diameter of the second flange connection groove (102) is smaller than the diameter of the first flange connection groove (101); flange mounting screw holes (20) are axially provided on the end surface of the flange connection seat (9) and the end surfaces of the first flange connection groove (101) and the second flange connection groove (102); a plurality of flow guide adjustment grooves (21) are provided on the circumferential surfaces of the first flange connection groove (101) and the second flange connection groove (102); the guide adjustment mechanism (11) is installed in the plurality of flow guide adjustment grooves (21); The guide adjustment mechanism (11) comprises a guide inclined arc plate (22), a guide plate sliding hole (23), a guide plate sliding rod (24), a pressure ball (25), and a guide plate tension spring (26); A guide bevel arc plate (22) is radially slidably installed in each of the guide adjustment grooves (21). A guide bevel is provided on the side of the guide bevel arc plate (22) away from the gate valve body (1). When the guide bevel arc plate (22) is closed toward the middle, a complete guide cone ring can be formed. A guide plate sliding hole (23) passes through the outer side of each of the guide adjustment grooves (21) and the flange connection seat (9). A guide plate sliding rod (24) fixedly connected to the guide bevel arc plate (22) is radially slidably installed in each of the guide plate sliding holes (23). A pressure ball (25) is connected to one end of the guide plate sliding rod (24) located outside the flange connection seat (9). A guide plate tension spring (26) sleeved and mounted on the outside of the guide plate slide rod (24) is fixedly connected between the inner side surface of the guide plate (21) and the outer side surface of the guide plate (22). After the flange connection seat 9 is connected to the pipeline, multiple pressure balls 25 can be pressed at the same time, so that the multiple guide plate slide rods 24 drive the multiple guide plate slant arc plates 22 to close toward the middle, and the guide plate slant arc plates 22 stretch the guide plate tension spring 26, so that the multiple guide plate slant arc plates 22 close together to form a complete guide cone ring. The annular inclined surface on the inner side of the guide cone ring can reduce the resistance of the fluid. When the pipeline flange is connected to the second flange connection groove 102, it is only necessary to close the four guide plate slant arc plates 22 located on the inner side to the middle to form a guide cone ring. The guide adjustment mechanism (11) further comprises a guide drive ring cylinder (27), a guide drive rotating ring (28), a pressing arc plate (29), a drive rack (30), a drive gear (31), and a drive handle (32); Two guide drive rings (27) with inner side openings are coaxially fixedly mounted on the outer side surface of the flange connection seat (9); a plurality of the pressure balls (25) on the same cross section are all located in one of the guide drive rings (27); a guide drive swivel (28) is coaxially rotatably mounted on the inner circumferential surface of each guide drive ring (27); a plurality of pressing arc plates (29) evenly distributed in the circumferential direction and in contact with the pressure balls (25) are fixedly mounted on the inner side surface of the guide drive swivel (28); a driving rack (30) is fixedly mounted on the inner side surface of the guide drive swivel (28); a driving gear (31) meshing with the driving rack (30) is rotatably mounted on the inner side surface of the guide drive ring (27); and the driving gear (31) is coaxially fixedly connected to a driving handle (32) located on the outer side of the guide drive ring (27); The sewage discharge mechanism (12) comprises a backflow prevention cone ring (33), a sewage discharge groove (34), and a sewage discharge groove sealing block (35); A plurality of backflow prevention cone rings (33) are coaxially fixedly mounted inside the flange connection seat (9), with the end of the backflow prevention cone ring (33) having a smaller diameter facing the gate valve body (1). A sewage trough (34) is penetrated through the bottom of the flange connection seat (9), and a sewage trough sealing block (35) is detachably mounted in the sewage trough (34) by means of bolts.

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