A corrosion-resistant fluorine-lined diaphragm valve and its manufacturing process

Abstract

The present invention relates to the technical field of diaphragm pumps, and proposes a corrosion-resistant fluorine-lined diaphragm valve and a manufacturing process thereof, including a valve tube, an adjusting structure fixedly connected to the surface of the valve tube, a liquid inlet end and a liquid outlet end are respectively provided at both ends of the valve tube, a telescopic cylinder is fixedly connected to the upper end of the valve tube, a one-way structure is provided inside the valve tube near the liquid inlet end and the liquid outlet end, a diaphragm member is fixedly connected to the inside of the valve tube, a movable column is fixedly connected to the surface of the diaphragm member, and a positioning structure is connected between the inner wall of the valve tube and the movable column; the adjusting structure includes an external fixed tube fixedly connected to the outer surface of the valve tube, two groups of holes are opened on the surface of the valve tube corresponding to the inner side of the external fixed tube, and a balancing component is provided inside the holes. Through the above technical scheme, the problem that the column used for pushing the diaphragm of the existing diaphragm pump has no structure for positioning and guiding, and the problem that the pushing displacement is easy to occur during long-term use will further aggravate the wear of the diaphragm and even cause damage to the diaphragm is solved.

Description

Technical Field

[0001] The invention relates to the technical field of diaphragm pumps, and in particular to a corrosion-resistant fluorine-lined diaphragm valve and a manufacturing process thereof. Background Art

[0002] A diaphragm pump is a pump body that separates the liquid and the pump cylinder through a diaphragm. It is usually used to transport corrosive liquids. The diaphragm pump has good self-priming performance and can also transport liquids when there is no liquid inside the pump. Diaphragm pumps are mostly used in chemical, pharmaceutical, food, environmental protection and other industries.

[0003] After searching, the authorization announcement number is CN115325206B, which is a corrosion-resistant diaphragm valve and its use method. The invention squeezes the inner diaphragm to the top of the plane annular top opening through the diaphragm driving mechanism, which has the effect of closing the flow channel of the diaphragm valve, and the plane annular top opening is horizontally arranged, and the overall force center of the inner diaphragm is symmetrically and evenly distributed. The main force on the inner diaphragm is the squeezing force, which is greater than the shear force, which effectively improves the service life of the inner diaphragm. At the same time, since the overall force of the inner diaphragm is uniform, the sealing effect of the diaphragm valve during long-term use is effectively guaranteed, and the stability of the use of the diaphragm valve is effectively guaranteed;

[0004] However, the column used to push the diaphragm in the above-mentioned existing diaphragm pump has no positioning and guiding structure. During long-term use, it is easy to cause displacement of the pushing movement, which will further aggravate the wear of the diaphragm and even cause damage to the diaphragm. For this reason, we propose a corrosion-resistant fluorine-lined diaphragm valve and its manufacturing process. Summary of the invention

[0005] The present invention proposes a corrosion-resistant fluorine-lined diaphragm valve and a manufacturing process thereof, which solves the problem mentioned in the background technology that the column used for pushing the diaphragm in the existing diaphragm pump has no structure for positioning and guiding, and is prone to displacement during long-term use, which in turn aggravates the wear of the diaphragm and even causes damage to the diaphragm.

[0006] The technical solution of the present invention is as follows:

[0007] A corrosion-resistant fluorine-lined diaphragm valve, comprising a valve tube, a regulating structure is fixedly connected to the surface of the valve tube, a liquid inlet end and a liquid outlet end are respectively provided at both ends of the valve tube, a telescopic cylinder is fixedly connected to the upper end of the valve tube, a one-way structure is provided inside the valve tube near the liquid inlet end and the liquid outlet end, a diaphragm is fixedly connected to the inside of the valve tube, a movable column is fixedly connected to the surface of the diaphragm, and a positioning structure is connected between the inner wall of the valve tube and the movable column;

[0008] The adjustment structure includes an external fixed tube fixedly connected to the outer surface of the valve tube, and two groups of holes are opened on the surface of the valve tube corresponding to the inner side of the external fixed tube, and a balancing component is arranged inside the holes, and the balancing component includes a fixed plate fixedly connected to the hole of the valve tube, an opening is opened in the middle of the fixed plate, a sunken groove is opened on one side surface of the fixed plate, a return spring is arranged inside the sunken groove, one end of the return spring is connected to a movable plate, a convex ring is fixedly connected to one side surface of the fixed plate, a protrusion is fixedly connected to one side surface of the movable plate, and an annular groove is opened on one side of the movable plate.

[0009] As a further technical solution of the present invention, the top end of the movable column is fixedly connected with an end head, a reset spring is connected between the end head and the positioning structure, the positioning structure includes a guide block movably sleeved on the surface of the movable column, a fixing frame is fixedly connected between the guide block and the inner wall of the valve tube, an inner groove is provided on the inner side of the guide block, a positioning frame is arranged inside the inner groove, a roller is rotatably connected to the surface of the positioning frame, a side telescopic member is hinged between the positioning frame and the inner wall of the guide block, a middle telescopic member is fixedly connected between the positioning frame and the inner wall of the guide block, the middle telescopic member and the side telescopic member are both composed of two groups of pipes sleeved with each other, and the two groups of pipes are slidably connected to each other, the thinner end surface of the middle telescopic member is fixedly connected with an end plate, and a supporting spring is connected between the end plate and the inner wall of the guide block.

[0010] As a further technical solution of the present invention, the one-way structure includes a leak-proof block and a circulation block respectively fixedly connected to the inner wall surface of the valve tube, the inner sides of the circulation block and the leak-proof block are both provided with a center hole, the surface of the circulation block is provided with a circulation hole, the surface of the leak-proof block close to the circulation block is provided with a recessed groove, an isolation ball is arranged between the leak-proof block and the circulation block, a pushing spring is arranged inside the recessed groove, one end of the pushing spring is connected to a movable block, and a sealing convex ring is fixedly connected to the outer surface of the movable block.

[0011] As a further technical solution of the present invention, liquid is arranged on the inner side of the external fixed tube and in the upper end cavity of the internal diaphragm of the valve tube. The liquid is used to balance the pressure on the upper surface of the diaphragm. There are two groups of balancing components, one for liquid inlet and the other for liquid outlet.

[0012] As a further technical solution of the present invention, the diameter of the opening matches the diameter of the protrusion, the convex ring matches the annular groove, the diameter of the movable plate is smaller than the diameter of the fixed plate, and a sealing effect is formed by the movable plate and the fixed plate being fitted together. The movable plate is moved away from the fixed plate to achieve communication between the cavity inside the valve tube and the cavity inside the outer fixed tube.

[0013] As a further technical solution of the present invention, the number of the inner grooves is several groups and is distributed in a ring array, the side telescopic parts are obliquely arranged, and the number of side telescopic parts corresponding to one group of the positioning frames is two groups and is symmetrically distributed, the roller and the movable column are in rolling connection, and the roller and the movable column are in line contact, and the roller is pushed and guided to the position of the movable column by the elastic force of the support spring.

[0014] As a further technical solution of the present invention, the diameter of the end head is larger than the diameter of the movable column, the head positions of the upper and lower elastic ends of the reset spring are respectively fixedly connected to the end head and the guide block, and the number of positioning frames corresponding to a group of inner grooves is two groups and is distributed in an array.

[0015] As a further technical solution of the present invention, the central hole opening of the circulation block and the anti-leakage block close to the isolation ball matches half of any central cross-section of the isolation ball, the circulation holes run through the circulation block, and the number of the circulation holes is several groups and distributed in a ring array.

[0016] As a further technical solution of the present invention, the push spring is arranged horizontally, and the head positions at both elastic ends of the push spring are fixedly connected to the movable block and the leak-proof block respectively. The sealing convex ring is made of corrosion-resistant and elastic material, and the sealing convex ring is pressed against the sealing convex ring by the isolation ball to achieve the closure of the central hole opening in the middle of the leak-proof block. The number of sealing convex rings corresponding to a group of movable blocks is several groups, and the inner wall surface of the valve tube is provided with a fluorine lining layer.

[0017] The present invention also includes a manufacturing process of a corrosion-resistant fluorine-lined diaphragm valve, and the manufacturing process includes the following steps:

[0018] Step 1: Melting and forming, raw material preparation; Melt the valve tube, liquid inlet end and liquid outlet end as a whole, then melt the leak-proof block, flow block and isolation ball, take a set of positioning structure, telescopic cylinder, movable column together with end head, diaphragm and adjustment structure for use, evenly arrange the fluorine lining raw material on the inner wall surface of the valve tube, and sinter to form;

[0019] Step 2: Molding;

[0020] The leak-proof block and the flow block are welded to the inner wall surface of the valve tube in sequence, and the isolation ball is arranged between the flow block and the leak-proof block to complete the installation of the one-way structure;

[0021] The outer edge of the diaphragm is fixedly connected to the inner wall of the valve tube, and then the lower end of the movable column is fixed to the middle part of the diaphragm, the upper end of the movable column passes through the inner side of the guide block, and then the outer end of the fixing frame is fixedly connected to the inner wall surface of the valve tube, the return spring is sleeved on the surface of the movable column, and then the end head is fixedly connected to the upper end of the movable column, and the telescopic cylinder is fixedly connected to the top of the valve tube, and the output end corresponds to the position of the end head;

[0022] The fixing plate is welded and fixedly connected to the hole on the surface of the valve tube, and other structures related to the balancing component are directly or indirectly connected to the fixing plate. Then the outer fixing tube is welded and fixed to surround the position of the balancing component, and liquid is injected through the hole reserved on the surface of the outer fixing tube. After the liquid injection is completed, the hole is permanently closed, and the diaphragm valve can be formed;

[0023] Step 3: The diaphragm valve can be put into use after the test is correct.

[0024] The working principle and beneficial effects of the present invention are:

[0025] By adjusting the structure in the present invention, during use, a relatively uniform pressure can be applied to the upper surface of the diaphragm with the help of liquid pressure, thereby providing a guarantee for the long-term use of the diaphragm valve, enabling the diaphragm to be used for a long time, and reducing the loss of the diaphragm moving up and down, thereby extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] Figure 1 It is a schematic diagram of the structure of the device of the present invention;

[0028] Figure 2 For the present invention Figure 1 A schematic diagram of a local structure cut away from another perspective;

[0029] Figure 3 For the present invention Figure 2 Schematic diagram of the cutaway local structure;

[0030] Figure 4 It is a schematic diagram of a local structure cut away at the regulating structure of the present invention;

[0031] Figure 5 For the present invention Figure 4 A partial enlarged view of

[0032] Figure 6 It is a schematic diagram of the local structure of the positioning structure of the present invention;

[0033] Figure 7 It is a schematic diagram of a local structure cut away at the positioning structure of the present invention;

[0034] Figure 8 For the present invention Figure 3 Enlarged schematic diagram of the local structure;

[0035] Fig. 9 For the present invention Figure 8 Enlarged schematic diagram of the local structure.

[0036] In the figure: 1. valve tube; 2. adjustment structure; 20. balance assembly; 21. external fixed tube; 22. fixed plate; 23. opening; 24. inner recessed groove; 25. return spring; 26. convex ring; 27. movable plate; 28. protrusion; 29. ​​annular groove; 3. liquid inlet end; 4. liquid outlet end; 5. telescopic cylinder; 6. one-way structure; 61. leak-proof block; 62. circulation block; 63. center hole; 64. circulation hole; 65. recessed groove; 66. isolation ball; 67. push spring; 68. movable block; 69. sealing convex ring; 7. end; 8. movable column; 9. positioning structure; 91. guide block; 92. fixed frame; 93. inner recessed groove; 94. positioning frame; 95. roller; 96. side telescopic member; 97. middle telescopic member; 98. end plate; 99. support spring; 10. return spring; 11. diaphragm member. DETAILED DESCRIPTION

[0037] The following will be combined with 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.

[0038] Example 1

[0039] like Figure 1~Figure 5 As shown, this embodiment proposes a corrosion-resistant fluorine-lined diaphragm valve, including a valve tube 1, a regulating structure 2 is fixedly connected to the surface of the valve tube 1, a liquid inlet end 3 and a liquid outlet end 4 are respectively provided at both ends of the valve tube 1, a telescopic cylinder 5 is fixedly connected to the upper end of the valve tube 1, a one-way structure 6 is provided near the liquid inlet end 3 and the liquid outlet end 4 inside the valve tube 1, a diaphragm 11 is fixedly connected to the inside of the valve tube 1, a movable column 8 is fixedly connected to the surface of the diaphragm 11, and a positioning structure 9 is connected between the inner wall of the valve tube 1 and the movable column 8;

[0040] The regulating structure 2 comprises an outer fixed tube 21 fixedly connected to the outer surface of the valve tube 1, and two groups of holes are provided on the surface of the valve tube 1 corresponding to the inner side of the outer fixed tube 21, and a balancing component 20 is arranged inside the holes. The balancing component 20 comprises a fixed plate 22 fixedly connected to the hole of the valve tube 1, and an opening 23 is provided in the middle of the fixed plate 22, and an inner recessed groove 24 is provided on one side surface of the fixed plate 22, and a return spring 25 is arranged inside the inner recessed groove 24, and one end of the return spring 25 is connected to a movable plate 27, and a convex ring 26 is fixedly connected to one side surface of the fixed plate 22, and a protrusion 28 is fixedly connected to one side surface of the movable plate 27, and an annular groove 29 is provided on one side of the movable plate 27.

[0041] Liquid is arranged on the inner side of the outer fixed tube 21 and in the upper cavity of the diaphragm 11 inside the valve tube 1. The liquid is used to balance the pressure on the upper surface of the diaphragm 11. There are two groups of balancing components 20, one group for liquid inlet and one group for liquid outlet. The diameter of the opening 23 matches the diameter of the protrusion 28, the convex ring 26 matches the annular groove 29, the diameter of the movable plate 27 is smaller than the diameter of the fixed plate 22, and a sealing effect is formed by the movable plate 27 and the fixed plate 22 being fitted together. The movable plate 27 is away from the fixed plate 22 to achieve communication between the cavity inside the valve tube 1 and the cavity inside the outer fixed tube 21.

[0042] In this embodiment, relatively uniform pressure can be applied to the upper surface of the diaphragm 11 by means of liquid pressure, thereby providing a guarantee for the long-term use of the diaphragm valve, enabling the diaphragm 11 to be used for a long time, and reducing the loss of the diaphragm 11 when moving up and down, thereby extending the service life.

[0043] Example 2

[0044] like Figure 6~Figure 7 As shown, on the basis of Example 1, it is further proposed that the top end of the movable column 8 is fixedly connected with the end head 7, and a reset spring 10 is connected between the end head 7 and the positioning structure 9. The positioning structure 9 includes a guide block 91 movably sleeved on the surface of the movable column 8, a fixing frame 92 is fixedly connected between the guide block 91 and the inner wall of the valve tube 1, an inner groove 93 is provided on the inner side of the guide block 91, and a positioning frame 94 is arranged inside the inner groove 93. A roller 95 is rotatably connected to the surface of the positioning frame 94, a side telescopic member 96 is hinged between the positioning frame 94 and the inner wall of the guide block 91, and a middle telescopic member 97 is fixedly connected between the positioning frame 94 and the inner wall of the guide block 91. The middle telescopic member 97 and the side telescopic member 96 are both composed of two groups of pipes sleeved with each other, and the two groups of pipes are slidably connected to each other. The thinner end surface of the middle telescopic member 97 is fixedly connected with an end plate 98, and a support spring 99 is connected between the end plate 98 and the inner wall of the guide block 91.

[0045] The number of inner grooves 93 is several groups and they are distributed in a ring array, the side telescopic parts 96 are obliquely arranged, and one group of positioning frames 94 corresponds to two groups of side telescopic parts 96 and they are symmetrically distributed, the roller 95 and the movable column 8 are rollingly connected, and there is line contact between the roller 95 and the movable column 8, and the roller 95 is pushed by the elastic force of the support spring 99 to realize the positioning and guiding of the position of the movable column 8 by the roller 95; the diameter of the end 7 is larger than the diameter of the movable column 8, and the head positions of the upper and lower elastic ends of the reset spring 10 are fixedly connected to the end 7 and the guide block 91 respectively, and the number of positioning frames 94 corresponding to one group of inner grooves 93 is two groups and they are distributed in an array.

[0046] In this embodiment, the position of the movable column 8 is positioned. Even in a tilted state, the movable column 8 can still be kept at the axial position of the port of the valve tube 1 at all times. The force that pushes the diaphragm 11 will not be offset due to the tilt, which can further reduce the wear of the diaphragm 11 when it moves up and down on the inner side of the valve tube 1.

[0047] Example 3

[0048] like Figure 8~Figure 9 As shown, on the basis of Example 2, a one-way structure 6 is further proposed, which includes a leak-proof block 61 and a flow block 62 respectively fixedly connected to the inner wall surface of the valve tube 1, a center hole 63 is provided on the inner side of the flow block 62 and the leak-proof block 61, a flow hole 64 is provided on the surface of the flow block 62, a recessed groove 65 is provided on the surface of the leak-proof block 61 close to the flow block 62, an isolation ball 66 is provided between the leak-proof block 61 and the flow block 62, a push spring 67 is provided inside the recessed groove 65, one end of the push spring 67 is connected to a movable block 68, and a sealing convex ring 69 is fixedly connected to the outer surface of the movable block 68.

[0049] The opening of the center hole 63 on the side of the circulation block 62 and the leak-proof block 61 close to the isolation ball 66 matches half of any central cross-section of the isolation ball 66, and the circulation hole 64 runs through the circulation block 62. The number of the circulation holes 64 is several groups and is distributed in a ring array; the push-up spring 67 is arranged horizontally, and the head positions of the elastic ends of the push-up spring 67 are fixedly connected to the movable block 68 and the leak-proof block 61 respectively. The sealing convex ring 69 is made of a corrosion-resistant and elastic material. The isolation ball 66 is pressed against the sealing convex ring 69 to achieve the closure of the opening of the center hole 63 in the middle of the leak-proof block 61. A group of movable blocks 68 corresponds to several groups of sealing convex rings 69, and the inner wall surface of the valve tube 1 is provided with a fluorine lining layer.

[0050] In this embodiment, the passage for feeding or discharging materials can be automatically adjusted when needed. At the same time, the opening of the center hole 63 can be effectively closed when the isolation ball 66 is in contact with the leak-proof block 61. The setting of the multi-layer sealing convex ring 69 can make the isolation ball 66 and the sealing convex ring 69 tightly connected, and play a good sealing role when the isolation ball 66 cooperates with the leak-proof block 61 for sealing, and no large gap will be generated.

[0051] The present invention also includes a manufacturing process of a corrosion-resistant fluorine-lined diaphragm valve, and the manufacturing process includes the following steps:

[0052] Step 1: Melting and forming, raw material preparation; Melt the valve tube 1, the liquid inlet end 3, and the liquid outlet end 4 as a whole, then melt the leak-proof block 61, the flow block 62, and the isolation ball 66, take a set of positioning structure 9, telescopic cylinder 5, movable column 8 together with the end head 7, diaphragm 11 and adjustment structure 2 for use, evenly arrange the fluorine lining raw material on the inner wall surface of the valve tube 1, and sinter to form;

[0053] Step 2: Molding;

[0054] The leak-proof block 61 and the flow block 62 are welded to the inner wall surface of the valve tube 1 in sequence, and the isolation ball 66 is arranged between the flow block 62 and the leak-proof block 61 to complete the installation of the one-way structure 6;

[0055] The outer edge of the diaphragm 11 is fixedly connected to the inner wall of the valve tube 1, and then the lower end of the movable column 8 is fixed to the middle part of the diaphragm 11, and the upper end of the movable column 8 passes through the inner side of the guide block 91, and then the outer end of the fixing frame 92 is fixedly connected to the inner wall surface of the valve tube 1, and the return spring 10 is sleeved on the surface of the movable column 8, and then the terminal 7 is fixedly connected to the upper end of the movable column 8, and the telescopic cylinder 5 is fixedly connected to the top of the valve tube 1, and the output end corresponds to the position of the terminal 7;

[0056] The fixing plate 22 is welded and fixedly connected to the hole on the surface of the valve tube 1, and other structures related to the balancing component 20 are directly or indirectly connected to the fixing plate 22. Then, the outer fixing tube 21 is welded and fixedly surrounded by the position of the balancing component 20, and liquid is injected through the hole reserved on the surface of the outer fixing tube 21. After the liquid injection is completed, the hole is permanently closed, and the diaphragm valve can be formed;

[0057] Step 3: The diaphragm valve can be put into use after the test is correct.

[0058] In summary, the use principle of the present invention is as follows:

[0059] When in use, the diaphragm valve can function by the periodic telescopic operation of the telescopic cylinder 5. During this process, the lower end of the telescopic cylinder 5 will push the end head 7 to move downward, and the end head 7 will push the movable column 8, and the movable column 8 will push the diaphragm member 11 to move downward. At the same time, the return spring 10 is compressed by the end head 7. At this time, the cavity in the outer fixed tube 21 will flow into the interior of the valve tube 1, and the liquid in the cavity of the outer fixed tube 21 will push the protrusion 28 together with the movable plate 27 away from the fixed plate 22. At this time, the return spring 25 will be stretched, thereby forming a passage inside and outside the valve tube 1, and the other set of balancing components 20 is in a closed state, that is, the movable plate 27 and the fixed plate 22 fits together, the return spring 25 shrinks inside the sunken groove 24, the convex ring 26 is engaged with the annular groove 29, forming a closed state, and the liquid is injected into the upper cavity formed by the diaphragm 11 and the valve tube 1. The diaphragm 11 is subjected to a relatively stable and gentle pressure by the liquid and the push of the movable column 8. During the contraction of the telescopic cylinder 5, under the reaction force of the return spring 10, the push end 7 together with the movable column 8 moves upward, and the liquid inside the valve tube 1 will flow out from a set of balancing components 20, so as to balance the pressure applied to the diaphragm 11 from above by adjusting the amount of liquid in the upper cavity formed by the diaphragm 11 and the valve tube 1.

[0060] During the up and down movement of the movable column 8, the movable column 8 will be in line contact with the roller 95, and the support spring 99 will push the end plate 98 to maintain the stability of the horizontal movement of the positioning frame 94. At the same time, the positioning frame 94 is obliquely supported by two sets of side telescopic parts 96 to effectively maintain the position of the roller 95. Under the pushing force of the support spring 99, the moving position center of the movable column 8 can be effectively adjusted to keep the movable column 8 always located at the axial position of the valve tube 1 together with the positioning structure 9, so that the diaphragm 11 can maintain its long-term performance when subjected to pressure or tension.

[0061] When the diaphragm 11 is pressed to the bottom, the liquid in the middle cavity of the lower end of the valve tube 1 will push the two groups of isolation balls 66 away from the center position. One group of the two isolation balls 66 abuts against the sealing convex ring 69 on the surface of the movable block 68, compressing the push spring 67 to the maximum until the isolation balls 66 fit with the leak-proof block 61. At this time, the leak-proof block 61 is in a closed state, and the other group of isolation balls 66 fits into the opening of the center hole 63 on the surface of the flow block 62. At this time, due to the characteristics of the flow hole 64 being connected, the middle cavity of the lower end is closed during the process of the diaphragm 11 being pressed down. The liquid in the container is discharged to the liquid outlet 4 through the circulation hole 64, and in the process of the diaphragm 11 moving upward, under the action of negative pressure suction, the two groups of isolation balls 66 can move to the middle cavity of the lower end. At this time, one group of isolation balls 66 moves from the leak-proof block 61 to the circulation block 62 to form a passage, while the other group of isolation balls 66 moves from the circulation block 62 to fit with the leak-proof block 61 to form a closure, thereby sucking the material on the side of the liquid inlet end 3 into the middle cavity. Through the repeated movement of the above process, corrosive liquids can be transported and delivered.

[0062] It should be noted that A is a fluorine-backing layer.

[0063] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A corrosion-resistant fluorine-lined diaphragm valve, comprising a valve tube (1), characterized in that: The surface of the valve tube (1) is fixedly connected with an adjusting structure (2); both ends of the valve tube (1) are respectively provided with a liquid inlet end (3) and a liquid outlet end (4); the upper end of the valve tube (1) is fixedly connected with a telescopic cylinder (5); the interior of the valve tube (1) near the liquid inlet end (3) and the liquid outlet end (4) are both provided with a one-way structure (6); the interior of the valve tube (1) is fixedly connected with a diaphragm (11); the surface of the diaphragm (11) is fixedly connected with a movable column (8); and a positioning structure (9) is connected between the inner wall of the valve tube (1) and the movable column (8); The regulating structure (2) comprises an outer fixed tube (21) fixedly connected to the outer surface of the valve tube (1); two groups of holes are formed on the surface of the valve tube (1) corresponding to the inner side of the outer fixed tube (21); a balancing component (20) is arranged inside the holes; the balancing component (20) comprises a fixed plate (22) fixedly connected to the hole of the valve tube (1); an opening (23) is formed in the middle of the fixed plate (22); a sunken groove (24) is formed on one side surface of the fixed plate (22); a return spring (25) is arranged inside the sunken groove (24); one end of the return spring (25) is connected to a movable plate (27); a convex ring (26) is fixedly connected to one side surface of the fixed plate (22); a protrusion (28) is fixedly connected to one side surface of the movable plate (27); and a ring groove (29) is formed on one side of the movable plate (27); The top end of the movable column (8) is fixedly connected to an end head (7), a return spring (10) is connected between the end head (7) and the positioning structure (9), the positioning structure (9) comprises a guide block (91) movably sleeved on the surface of the movable column (8), a fixing frame (92) is fixedly connected between the guide block (91) and the inner wall of the valve tube (1), an inner groove (93) is provided on the inner side of the guide block (91), a positioning frame (94) is provided inside the inner groove (93), and a roller (92) is rotatably connected to the surface of the positioning frame (94). 5), a side telescopic member (96) is hingedly connected between the positioning frame (94) and the inner wall of the guide block (91), a middle telescopic member (97) is fixedly connected between the positioning frame (94) and the inner wall of the guide block (91), the middle telescopic member (97) and the side telescopic member (96) are both composed of two groups of pipes that are sleeved together, and the two groups of pipes are slidably connected to each other, the thinner end surface of the middle telescopic member (97) is fixedly connected to an end plate (98), and a support spring (99) is connected between the end plate (98) and the inner wall of the guide block (91).

2. The corrosion-resistant fluorine-lined diaphragm valve according to claim 1, characterized in that: The one-way structure (6) comprises a leak-proof block (61) and a circulation block (62) respectively fixedly connected to the inner wall surface of the valve tube (1); the inner sides of the circulation block (62) and the leak-proof block (61) are both provided with a central hole (63); the surface of the circulation block (62) is provided with a circulation hole (64); the surface of the leak-proof block (61) close to the circulation block (62) is provided with a recessed groove (65); an isolation ball (66) is provided between the leak-proof block (61) and the circulation block (62); a push spring (67) is provided inside the recessed groove (65); one end of the push spring (67) is connected to a movable block (68); and a sealing convex ring (69) is fixedly connected to the outer surface of the movable block (68).

3. The corrosion-resistant fluorine-lined diaphragm valve according to claim 1, characterized in that: Liquid is provided inside the inner side of the external fixed tube (21) and in the upper cavity of the internal diaphragm member (11) of the valve tube (1). The liquid is used to balance the pressure on the upper surface of the diaphragm member (11). The balancing components (20) are provided in two groups, one for liquid inlet and one for liquid outlet.

4. The corrosion-resistant fluorine-lined diaphragm valve according to claim 3 is characterized in that: The diameter of the opening (23) matches the diameter of the protrusion (28), the convex ring (26) matches the annular groove (29), the diameter of the movable plate (27) is smaller than the diameter of the fixed plate (22), and a sealing effect is formed by the movable plate (27) and the fixed plate (22) being fitted together, and the movable plate (27) is moved away from the fixed plate (22) to achieve communication between the interior of the valve tube (1) and the interior of the outer fixed tube (21).

5. The corrosion-resistant fluorine-lined diaphragm valve according to claim 1, characterized in that: The number of the inner grooves (93) is a plurality of groups and they are arranged in a ring array, the side telescopic members (96) are arranged obliquely, and one group of the positioning frames (94) corresponds to two groups of the side telescopic members (96) and they are symmetrically distributed, the roller (95) and the movable column (8) are in rolling connection, and the roller (95) and the movable column (8) are in line contact, and the roller (95) and the movable column (8) are positioned and guided by the elastic force of the support spring (99).

6. The corrosion-resistant fluorine-lined diaphragm valve according to claim 5, characterized in that: The diameter of the end head (7) is greater than the diameter of the movable column (8), and the head positions of the upper and lower elastic ends of the return spring (10) are respectively fixedly connected to the end head (7) and the guide block (91), and the number of the positioning frames (94) corresponding to a set of the inner grooves (93) is two and they are distributed in an array.

7. The corrosion-resistant fluorine-lined diaphragm valve according to claim 2, characterized in that: The opening of the central hole (63) on the side of the circulation block (62) and the anti-leakage block (61) close to the isolation ball (66) matches half of any central cross section of the isolation ball (66), and the circulation holes (64) penetrate the circulation block (62). The number of the circulation holes (64) is a plurality of groups and they are distributed in a ring array.

8. The corrosion-resistant fluorine-lined diaphragm valve according to claim 7, characterized in that: The push spring (67) is arranged transversely, and the head positions of the elastic ends of the push spring (67) are respectively fixedly connected to the movable block (68) and the leak-proof block (61). The sealing convex ring (69) is made of a corrosion-resistant and elastic material. The sealing convex ring (69) is pressed against the sealing convex ring (69) to achieve the closure of the opening of the central hole (63) in the middle of the leak-proof block (61). The number of sealing convex rings (69) corresponding to one set of movable blocks (68) is several, and the inner wall surface of the valve tube (1) is provided with a fluorine lining layer.

9. A manufacturing process of a corrosion-resistant fluorine-lined diaphragm valve, used to manufacture the corrosion-resistant fluorine-lined diaphragm valve according to any one of claims 1 to 8, characterized in that: The production process includes the following steps: Step 1: Melting and forming, and preparing raw materials; melting the valve tube (1), the liquid inlet end (3), and the liquid outlet end (4) as a whole, and then melting the leak-proof block (61), the flow block (62), and the isolation ball (66); taking a set of positioning structure (9), telescopic cylinder (5), movable column (8) together with the end head (7), diaphragm (11), and adjustment structure (2) for use; evenly arranging the fluorine lining raw material on the inner wall surface of the valve tube (1), and sintering to form; Step 2: Molding; The leak-proof block (61) and the flow block (62) are sequentially welded to the inner wall surface of the valve tube (1), and the isolation ball (66) is arranged between the flow block (62) and the leak-proof block (61), thereby completing the installation of the one-way structure (6); The outer edge of the diaphragm (11) is fixedly connected to the inner wall of the valve tube (1), and then the lower end of the movable column (8) is fixed to the middle part of the diaphragm (11), the upper end of the movable column (8) is passed through the inner side of the guide block (91), and then the outer end of the fixing frame (92) is fixedly connected to the inner wall surface of the valve tube (1), the return spring (10) is sleeved on the surface of the movable column (8), and then the terminal (7) is fixedly connected to the upper end of the movable column (8), and the telescopic cylinder (5) is fixedly connected to the top end of the valve tube (1), and the output end corresponds to the position of the terminal (7); The fixing plate (22) is welded and fixedly connected to the hole on the surface of the valve tube (1), and other structures related to the balancing component (20) are directly or indirectly connected to the fixing plate (22). Then, the outer fixing tube (21) is welded and fixedly connected to surround the position of the balancing component (20), and liquid is injected through the hole reserved on the surface of the outer fixing tube (21). After the liquid injection is completed, the hole is permanently sealed, so that the diaphragm valve can be formed; Step 3: The diaphragm valve can be put into use after the test is correct.

Images