Fluorine lining stop valve

Abstract

The utility model discloses a fluorine lining stop valve which comprises a stop valve body, the upper portion of the stop valve body is fixedly connected with a valve deck, the interior of the valve deck is in threaded connection with an external threaded rod, the lower portion of the external threaded rod is fixedly connected with a valve clack, and the middle of the inner side of the stop valve body is fixedly connected with a valve seat matched with the valve clack. An internal threaded rod is rotationally connected to the interior of the external threaded rod, a lifting table is in threaded connection with the outer side of the lower portion of the internal threaded rod, lifting grooves are formed in the two sides of the lower portion of the external threaded rod, connecting plates are fixedly connected to the two sides of the lifting table, and the connecting plates penetrate through the lifting grooves to be fixedly connected with connecting rings; a plurality of sets of lifting rods are slidably connected to the interior of the connecting ring, pressing plates are fixedly connected to the lower portions of the lifting rods, fixing pieces are fixedly connected to the upper portions of the lifting rods, first springs are fixedly connected between the fixing pieces and the connecting ring, and the first springs are arranged on the outer sides of the lifting rods in a sleeving mode; a gap between the outer side of the valve clack and the valve seat caused by water pressure can be prevented, and the sealing performance between the valve seat and the valve clack is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of stop valve, concretely is a fluorine lining stop valve. BACKGROUND

[0002] The working principle of the stop valve is to control the flow of fluid by the movement of the valve disc on the valve seat. The valve disc moves linearly along the center line of the valve seat, changes the distance between the valve disc and the valve seat, and thus changes the cross-sectional area of the flow passage, realizing the control and interruption of flow.

[0003] The sealing property between the outer edge of the valve disc and the valve seat is the key to the sealing of the stop valve after the stop valve is closed. The fluorine lining stop valve can seal and compress the connection between the valve disc and the valve seat, and further improve the sealing property between the valve disc and the valve seat. SUMMARY

[0004] The utility model discloses a fluorine lining stop valve to solve the problem in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a fluorine lining stop valve, including the lifting platform, including the stop valve, the upper portion fixedly connected with the valve cover of stop valve, the inside screw thread connection has the outer thread rod of valve cover, the lower portion fixedly connected with the valve disc of outer thread rod, the inside fixedly connected with the valve seat of cooperation valve disc of stop valve middle part, the inside rotationally connected with the inner thread rod of outer thread rod, the outer side screw thread connection has the lifting platform of inner thread rod lower portion, the lifting groove is established in the lower portion both sides of outer thread rod, the both sides fixedly connected with the connecting plate of lifting platform, the fixedly connected with the connecting ring of connecting plate penetration lifting groove, the inside slidingly connected with a plurality of groups lifting rod of connecting ring, the fixedly connected with the pressing plate of lifting rod lower portion, the fixedly connected with the fixed piece of lifting rod upper portion, the fixedly connected with the first spring between fixed piece and connecting ring, the first spring is set up in the outer side of lifting rod.

[0006] Preferably, the upper portion of the valve seat is provided with an upper platform, the lower portion of the pressing plate is opposite the connection between the upper platform and the valve disc, and the lower portion of the valve seat is provided with a lower platform.

[0007] Preferably, the inner side of the valve seat is provided with a second inclined table, and the outer side of the valve disc is provided with a first inclined table matched with the second inclined table.

[0008] Preferably, the upper portion of the outer thread rod is fixedly connected with a handle, the outer side of the upper portion of the outer thread rod is fixedly connected with a follow-up block, the follow-up block and the outer side of the outer thread rod are slidingly connected with a lifting piece, the lower portion of the lifting piece is fixedly connected with a gear ring, the upper portion of the valve cover is provided with a gear groove matched with the gear ring, the second spring is fixedly connected between the lifting piece and the handle, and the second spring is set up in the outer side of the outer thread rod.

[0009] Preferably, two groups of hand holding pieces are fixedly connected to the outer side of the lifting piece, and the hand holding pieces are parallel to the handle.

[0010] Preferably, flange plates matched with each other are fixedly connected to the outer side of the valve cover and the stop valve.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] 1、 the utility model discloses a rotating inner thread rod, and the lifting platform moves up and down along the inner thread rod, and the connecting plate drives the connecting ring to move down, so that the connecting ring drives the pressing plate to contact the contact part of the upper platform on the upper part of the valve disc and the valve seat, the first spring is pulled to drive the fixed sheet, the pressing plate is improved to the pressure of the valve disc and the upper platform connecting part, the water pressure can be prevented to cause the gap between the outer side of the valve disc and the valve seat, and the sealing property between the valve seat and the valve disc is improved over time.

[0013] 2、 the utility model discloses a second spring still pushes the lifting piece, and the tooth ring is inserted into the tooth groove, and the outer thread rod rotation is locked, so that the handle is prevented from being touched, the outer thread rod is prevented from rotating randomly, the valve disc is caused to rise and leak. DRAWINGS

[0014] Figure 1 It is the first perspective three-dimensional structure schematic diagram of the utility model;

[0015] Figure 2 It is the second perspective partial structure enlarged view of the utility model;

[0016] Figure 3 It is the third perspective outer thread rod structure section view of the utility model;

[0017] Figure 4 It is the fourth perspective lifting piece structure schematic diagram of the utility model.

[0018] In the drawing: 1, stop valve;2, outer thread rod;3, valve disc;4, first inclined table;5, valve seat;6, upper platform;7, second inclined table;8, lower platform;9, inner thread rod;10, lifting platform;11, lifting groove;12, connecting plate;13, pressing plate;14, lifting rod;15, fixed sheet;16, first spring;17, handle;18, lifting piece;19, tooth ring;20, tooth groove;21, second spring;22, follow-up block;23, hand holding piece;24, valve cover;25, flange plate;26, connecting ring. DETAILED DESCRIPTION

[0019] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0020] Please refer to Figures 1-4 The present application provides a technical solution: a fluorine-lined stop valve, comprising a stop valve 1, a valve cover 24 fixedly connected to the upper part of the stop valve 1, an externally threaded rod 2 threadedly installed in the inside of the valve cover 24, a valve clack 3 threadedly connected to the lower part of the externally threaded rod 2, a valve seat 5 fixedly welded to the middle part of the inside of the stop valve 1 and matched with the valve clack 3, the valve clack 3 is moved to the valve seat 5 by rotating the externally threaded rod 2, so as to realize the closing of the stop valve 1, an internally threaded rod 9 rotatably installed in the inside of the externally threaded rod 2, a lifting platform 10 threadedly installed to the lower part and outside of the internally threaded rod 9, lifting grooves 11 formed in the lower part and both sides of the externally threaded rod 2, connecting plates 12 fixedly welded to both sides of the lifting platform 10, a connecting ring 26 fixedly welded to the lifting platform 10 through the lifting grooves 11, a plurality of groups of lifting rods 14 slidably installed in the inside of the connecting ring 26, pressure plates 13 fixedly welded to the lower part of the lifting rods 14, fixed pieces 15 fixedly welded to the upper part of the lifting rods 14, first springs 16 fixedly welded between the fixed pieces 15 and the connecting ring 26, the first springs 16 being sleeved to the outside of the lifting rods 14, the lifting platform 10 is moved up and down along the inside of the externally threaded rod 2 by rotating the internally threaded rod 9, the connecting ring 26 is moved downward by the connecting plates 12, the connecting ring 26 drives the pressure plates 13 to contact the upper part of the outside of the valve clack 3, the pressure plates 13 are tightly attached to the outside of the valve clack 3, the fixed pieces 15 are pulled by the first springs 16, the pressure of the pressure plates 13 on the valve clack 3 is increased, and the gap between the outside of the valve clack 3 and the valve seat 5 caused by water pressure is prevented.

[0021] The upper portion of the valve seat 5 is provided with an upper platform 6, and the lower portion of the pressing plate 13 is opposite the connecting portion of the valve disc 3 and the upper platform 6, so that the sealing between the valve seat 5 and the valve disc 3 is ensured when the pressing plate 13 is in communication, and the lower portion of the valve seat 5 is provided with a lower platform 8 for positioning the lower portion of the valve disc 3, so that the upper portion of the valve disc 3 is flush with the valve seat 5, and the sealing between the valve seat 5 and the valve disc 3 is improved when in communication; the inner side of the valve seat 5 is provided with a second inclined table 7, and the outer side of the valve disc 3 is provided with a first inclined table 4 matched with the second inclined table 7, so that the contact area between the valve disc 3 and the valve seat 5 is extended, and the sealing between the valve seat 5 and the valve disc 3 is improved; the upper portion of the outer threaded rod 2 is fixedly welded with a handle 17, so that the outer threaded rod 2 is conveniently rotated, and the outer side of the upper portion of the outer threaded rod 2 is fixedly welded with a follower block 22, and the outer side of the outer threaded rod 2 is slidably installed with a lifting piece 18, so that the outer threaded rod 2 drives the lifting piece 18 to rotate, and the lower portion of the lifting piece 18 is fixedly welded with a gear ring 19, and the upper portion of a valve cover 24 is provided with a gear groove 20 matched with the gear ring 19, and the lifting piece 18 and the handle 17 are fixedly welded with a second spring 21, and the second spring 21 is sleeved on the outer side of the outer threaded rod 2, and the second spring 21 drives the lifting piece 18 to move, so that the gear ring 19 is inserted into the gear groove 20, the rotation of the outer threaded rod 2 is locked, and the valve disc 3 is prevented from being lifted due to the arbitrary rotation of the outer threaded rod 2; the outer side of the lifting piece 18 is fixedly welded with two groups of hand holding pieces 23, and the hand holding pieces 23 are parallel to the handle 17, so that when the outer threaded rod 2 is driven to rotate by the handle 17, the gear ring 19 is driven to move away from the gear groove 20 by the hand holding pieces 23, and the outer threaded rod 2 is unlocked; the valve cover 24 and the outer side of the stop valve 1 are fixedly welded with flanges 25 matched with each other, so that the connection between the stop valve 1 and the valve seat 5 is realized.

[0022] Working principle: when the utility model is used, the valve disc 3 is moved to the valve seat 5 by rotating the outer threaded rod 2, and is in contact with the lower platform 8 at the lower portion of the valve seat 5, so that the stop valve 1 is closed, the lifting platform 10 is moved up and down along the inner portion of the outer threaded rod 2 by rotating the inner threaded rod 9, the connecting ring 26 is driven to move downward by the connecting plate 12, the connecting ring 26 drives the pressing plate 13 to contact the contact portion between the valve disc 3 and the upper platform 6 at the upper portion of the valve seat 5, the fixed piece 15 is pulled by the first spring 16, the pressing plate 13 is pressed to the connecting portion between the valve disc 3 and the upper platform 6, the gap between the outer side of the valve disc 3 and the valve seat 5 is prevented due to the water pressure, the sealing between the valve seat 5 and the valve disc 3 is improved when in communication, and after the valve disc 3 is in place, the second spring 21 drives the lifting piece 18 to move, so that the gear ring 19 is inserted into the gear groove 20, the rotation of the outer threaded rod 2 is locked, and the handle 17 is prevented from being touched by the outside, so that the outer threaded rod 2 is prevented from being arbitrarily rotated.

[0023] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0024] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A fluorine-lined stop valve comprising a stop valve (1), characterized in that: The upper part of the stop valve (1) is fixedly connected with a valve cover (24), the inside of the valve cover (24) is threadedly connected with an external threaded rod (2), the lower part of the external threaded rod (2) is fixedly connected with a valve clack (3), the inside of the stop valve (1) is fixedly connected with a valve seat (5) matched with the valve clack (3), the inside of the external threaded rod (2) is rotatably connected with an internal threaded rod (9), the lower part of the internal threaded rod (9) is threadedly connected with a lifting platform (10) on the outside, the lower part of the external threaded rod (2) is provided with lifting grooves (11) on both sides, the lifting platform (10) is fixedly connected with connecting plates (12) on both sides, the connecting plates (12) are fixedly connected with connecting rings (26) penetrating the lifting grooves (11), a plurality of groups of lifting rods (14) are slidably connected in the connecting rings (26), the lower part of the lifting rod (14) is fixedly connected with a pressing plate (13), the upper part of the lifting rod (14) is fixedly connected with a fixed sheet (15), the fixed sheet (15) and the connecting ring (26) are fixedly connected with a first spring (16) on the outside of the lifting rod (14).

2. A fluoropolymer lined stop valve according to claim 1, wherein: The upper part of the valve seat (5) is provided with an upper platform (6), the lower part of the pressing plate (13) is opposite to the connecting place of the upper platform (6) and the valve clack (3), and the lower part of the valve seat (5) is provided with a lower platform (8).

3. A lined stop valve according to claim 1, characterised in that: The inside of the valve seat (5) is provided with a second inclined table (7), and the outside of the valve clack (3) is provided with a first inclined table (4) matched with the second inclined table (7).

4. A lined stop valve according to claim 1, characterised in that: The upper part of the external threaded rod (2) is fixedly connected with a handle (17), the upper part of the external threaded rod (2) is fixedly connected with a follow-up block (22) on the outside, the follow-up block (22) and the external threaded rod (2) are slidably connected with a lifting sheet (18) on the outside, the lower part of the lifting sheet (18) is fixedly connected with a tooth ring (19), the upper part of the valve cover (24) is provided with a tooth groove (20) matched with the tooth ring (19), the lifting sheet (18) and the handle (17) are fixedly connected with a second spring (21) on the outside of the external threaded rod (2).

5. A lined stop valve according to claim 4, characterised in that: The outside of the lifting sheet (18) is fixedly connected with two groups of hand holding sheets (23), and the hand holding sheets (23) are parallel to the handle (17).

6. A lined stop valve according to claim 3, characterised in that: The outside of the valve cover (24) and the stop valve (1) is fixedly connected with flange plates (25) matched with each other.

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