Waterproof stainless steel gate valve

Abstract

The waterproof stainless steel gate valve comprises a valve body and a flow velocity device, the flow velocity device comprises a sealing check block and a flow velocity annular plate, the flow velocity annular plate is arranged on the inner wall of the valve body, a through hole is formed in the middle of the flow velocity annular plate, the inner wall of the sealing check block is attached to the outer wall of the flow velocity annular plate, and two sets of limiting blocks are arranged at the top and the bottom of the inner wall of the valve body. The two limiting blocks in each set are symmetrically distributed, the sealing check block is located between the two limiting blocks, a movable groove is formed in the surface, located above the flow speed annular plate, of the valve body, a sealing block is arranged on the side wall of the movable groove, and the sealing check block is slidably connected into the movable groove and abuts against the sealing block. And through the arrangement of the flow velocity device, the flow velocity of liquid in the gate valve can be adjusted according to actual conditions when the gate valve is used, the flow velocity of the liquid in the gate valve is manually controlled, the working efficiency of the gate valve is improved, and the practicability of the gate valve is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of gate valves, in particular to a waterproof stainless steel gate valve. Background Art

[0002] The gate valve is a gate disc of an opening and closing component. The movement direction of the gate disc is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate disc has two sealing surfaces. The most commonly used mode is that the two sealing surfaces of the gate valve form a wedge shape, and the wedge angle varies with the valve parameters.

[0003] The Chinese patent discloses a stainless steel gate valve (application number: 202220699549.4). This solution can strengthen the sealing between the valve cavity and the valve plate through the retractable sealing plates on both sides of the valve plate, avoiding the occurrence of leakage. At the same time, through the filter screen in the water inlet channel, it can reduce the impurities entering the valve cavity, thereby reducing the wear rate of the valve plate. However, the device does not change the problem that the gate valve cannot artificially adjust the liquid flow rate, and cannot control the liquid flow rate inside the gate valve according to specific conditions and requirements. It is not practical, and when the gate valve is opened and closed, the screw will repeatedly enter and exit the gate valve. The wear caused over a long period of time will greatly reduce the sealing of the gate valve, which is easy to cause liquid leakage and waste of resources; on the other hand, the components in the device are not waterproof, and are easily corroded after long-term use, which greatly shortens the service life. Utility Model Content

[0004] The purpose of the utility model is to provide a waterproof stainless steel gate valve to solve the problems raised in the above background technology. Sound insulation cotton, waterproof coating, fluorine-containing inner layer, sealing between valve seat and valve cover, filter plate filtration

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waterproof stainless steel gate valve, comprising a valve body and a flow rate device, the flow rate device comprising a sealing block and a flow rate ring plate, the flow rate ring plate is arranged on the inner wall of the valve body, a through hole is opened in the middle of the flow rate ring plate, the inner wall of the sealing block is fitted with the outer wall of the flow rate ring plate, two groups of limit blocks are arranged on the top and bottom of the inner wall of the valve body, each group of the limit blocks is provided with two and symmetrically distributed, the sealing block is located between the two groups of limit blocks, a movable groove is opened on the surface of the valve body above the flow rate ring plate, a sealing block is arranged on the side wall of the movable groove, and the sealing block is slidably connected in the movable groove and abuts against the sealing block.

[0006] As an optimal technical solution of the utility model, a movable cylinder is fixedly connected to the top of the valve body, a valve seat is fixedly connected to the top of the movable cylinder, a valve cover is threadedly connected to the top of the valve seat via bolts, a bearing is provided on the top of the valve cover, and a valve stem is rotatably connected in the bearing.

[0007] As an optimal technical solution of the utility model, a handwheel is fixedly connected to the top of the valve stem, the bottom of the valve stem passes through the valve cover and extends into the valve seat, the bottom of the valve stem is fixedly connected to a main gear, and a pair of secondary gears are meshed at both ends of the main gear.

[0008] As a preferred technical solution of the utility model, a screw is fixedly connected to the bottom of the secondary gear, the other end of the screw passes through the valve seat and extends into the movable cylinder, and a sealing ring is provided on the surface of the screw at the bottom of the valve seat.

[0009] As a preferred technical solution of the utility model, the inner wall of the sealing block is provided with two sealing grooves, sealing rings are arranged in the sealing grooves, and a pair of sliding sleeves are symmetrically arranged on the top of the two side walls of the sealing block, and the sliding sleeves are threadedly connected to the screw.

[0010] As an optimal technical solution of the utility model, a fixing block is fixedly connected to the inner wall of one side of the valve body, a mounting groove is opened on one side of the fixing block, a mounting plate is installed in the mounting groove, and a filter is fixedly connected to the inner wall of the mounting plate.

[0011] As an optimal technical solution of the utility model, a protective lining is provided on the inner wall of the valve body, sound insulation cotton is provided on the outer wall of the valve body and the movable cylinder, flanges are fixedly connected at both ends of the valve body, and packing is provided on the inner wall of the flange.

[0012] As a preferred technical solution of the utility model, the flow rate device, the protective lining, the fixing block and the sealing ring are all made of polytetrafluoroethylene, and the surfaces of the valve body and the movable cylinder are coated with waterproof coating.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The waterproof stainless steel gate valve can adjust the internal liquid flow rate according to actual conditions when the gate valve is in use by setting the flow rate device, so that the liquid flow rate inside the gate valve can be artificially controlled, the working efficiency of the gate valve is improved, and the practicability of the gate valve is enhanced.

[0015] The waterproof stainless steel gate valve installs the filter screen on the fixed block through the installation plate, which is convenient for removing the filter screen for cleaning and replacement, thereby improving the water filtering performance, ensuring water permeability, and making the water outlet smoother.

[0016] The waterproof stainless steel gate valve uses polytetrafluoroethylene material inside the valve body to improve the waterproof and corrosion resistance, extend the service life, and ensure the working effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 This is a cross-sectional view of the internal structure of the main body of the utility model;

[0019] Figure 3 This is a cross-sectional view of the internal structure of the valve body of the utility model;

[0020] Figure 4 This is an exploded view of the sealing block structure of the utility model;

[0021] Figure 5 It is an exploded view of the connection structure between the fixing block and the filter screen of the utility model.

[0022] In the figure: 1. valve body; 2. movable cylinder; 3. valve seat; 4. bolt; 5. valve cover; 6. protective lining; 7. flow rate device; 8. sealing block; 9. sealing groove; 10. sealing ring; 11. sliding sleeve; 12. flow rate ring plate; 13. through hole; 14. limit block; 15. movable groove; 16. sealing block; 17. screw; 18. secondary gear; 19. main gear; 20. sealing ring; 21. valve stem; 22. bearing; 23. hand wheel; 24. fixing block; 25. mounting groove; 26. mounting plate; 27. filter screen; 28. sound insulation cotton; 29. ​​flange; 30. packing. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-5 The utility model provides a technical solution for a waterproof stainless steel gate valve. The utility model will be further described in detail below in conjunction with the accompanying drawings. Embodiment 1:

[0025] A waterproof stainless steel gate valve comprises a valve body 1 and a flow velocity device 7, wherein the flow velocity device 7 comprises a sealing block 8 and a flow velocity ring plate 12, wherein the flow velocity ring plate 12 is arranged on the inner wall of the valve body 1, a through hole 13 is provided in the middle of the flow velocity ring plate 12, the inner wall of the sealing block 8 is arranged to fit the outer wall of the flow velocity ring plate 12, two groups of limit blocks 14 are provided on the top and bottom of the inner wall of the valve body 1, each group of limit blocks 14 is provided with two and symmetrically distributed, the sealing block 8 is located between the two groups of limit blocks 14, a movable groove 15 is provided on the surface of the valve body 1 located above the flow velocity ring plate 12, a sealing block 16 is provided on the side wall of the movable groove 15, and the sealing block 8 is slidably connected in the movable groove 15 and abuts against the sealing block 16. The limit block 14 can limit the sealing block 8 to prevent its deviation from affecting the normal operation of the valve body 1; the sealing block 16 can enhance the sealing between the sealing block 8 and the movable groove 15 to prevent the liquid from entering the movable cylinder 2 from the movable groove 15.

[0026] Specifically, the top of the valve body 1 is fixedly connected with a movable cylinder 2, the top of the movable cylinder 2 is fixedly connected with a valve seat 3, the top of the valve seat 3 is threadedly connected with a valve cover 5 through a bolt 4, the top of the valve cover 5 is provided with a bearing 22, and the valve stem 21 is rotatably connected in the bearing 22.

[0027] Furthermore, a hand wheel 23 is fixedly connected to the top of the valve stem 21 , the bottom of the valve stem 21 passes through the valve cover 5 and extends into the valve seat 3 , the bottom of the valve stem 21 is fixedly connected to a main gear 19 , and a pair of secondary gears 18 are meshed at both ends of the main gear 19 .

[0028] Furthermore, a screw 17 is fixedly connected to the bottom of the secondary gear 18, and the other end of the screw 17 penetrates the valve seat 3 and extends into the movable cylinder 2. A sealing ring 20 is provided on the surface of the screw 17 at the bottom of the valve seat 3. This device makes it unnecessary to move the valve stem 21 back and forth in and out of the valve body 1 when the sealing block 8 is moved, thereby avoiding the possibility of liquid leakage.

[0029] Furthermore, two sealing grooves 9 are provided on the inner wall of the sealing block 8, and sealing rings 10 are provided in the sealing grooves 9. A pair of sliding sleeves 11 are symmetrically provided on the top of the two side walls of the sealing block 8, and the sliding sleeves 11 are threadedly connected with the screw 17. The sealing ring 10 can enhance the sealing performance between the sealing block 8 and the flow rate ring plate 12 when the sealing block 8 closes the through hole to prevent liquid leakage.

[0030] When used specifically, Figure 1 , Figure 2 and Figure 3 , Figure 4As shown, after the liquid enters the valve body 1, it will be blocked by the sealing block 8. When the liquid needs to start circulating, the hand wheel 23 is turned to make the valve stem 21 drive the main gear 19 to rotate, and the secondary gears 18 meshing on both sides of the main gear 19 correspondingly drive the screw 17 to rotate. The rotation of the screw 17 will cause the sleeve 11 to move up with the sealing block 8, and the sealing block 8 will leave the surface of the flow rate ring plate 12, so that the through hole 13 on the surface of the flow rate ring plate 12 is opened, and the liquid can circulate inside the valve body 1. The size of the through hole 13 can be changed accordingly by adjusting the sealing block 8. At this time, the flow rate of the liquid can be artificially controlled, which greatly improves the working efficiency of the gate valve and enhances the practicality of the gate valve. Embodiment 2:

[0031] A waterproof stainless steel gate valve, a fixing block 24 is fixedly connected to the inner wall of one side of the valve body 1, a mounting groove 25 is opened on one side of the fixing block 24, a mounting plate 26 is installed in the mounting groove 25, and a filter screen 27 is fixedly connected to the inner wall of the mounting plate 26.

[0032] Specifically, the inner wall of the valve body 1 is provided with a protective lining 6, the outer walls of the valve body 1 and the movable cylinder 2 are provided with sound insulation cotton 28, flanges 29 are fixedly connected at both ends of the valve body 1, and the inner wall of the flange 29 is provided with a packing 30.

[0033] Furthermore, the flow rate device 7, the protective lining 6, the fixed block 24 and the sealing ring 10 are all made of polytetrafluoroethylene, and the surfaces of the valve body 1 and the movable cylinder 2 are coated with waterproof coating. Polytetrafluoroethylene material has high waterproof and corrosion resistance. The use of this material in the internal device of the valve body 1 can greatly extend the service life. The waterproof coating on the surface of the valve body 1 and the movable cylinder 2 can improve the waterproof effect and slow down the rusting speed.

[0034] When used specifically, Figure 1 , Figure 2 and Figure 5 As shown, when liquid enters the valve body 1, it will first pass through the filter 27, where the filter 27 filters the liquid and removes impurities therein to avoid blockage inside the valve body 1. When the filter 27 needs to be cleaned and replaced, it can be removed from the fixed block 24 through the mounting plate 26, which is convenient and quick. The sound insulation cotton 28 can reduce the noise generated by the gate valve during operation and protect the surface of the gate valve from damage. The packing 30 is arranged in the flange 29 to enhance the airtightness of the connection.

[0035] In the present utility model, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description of reference terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more schemes or examples.

Claims

1. A waterproof stainless steel gate valve, comprising a valve body (1) and a flow rate device (7), characterized in that: The flow velocity device (7) comprises a sealing block (8) and a flow velocity ring plate (12); the flow velocity ring plate (12) is arranged on the inner wall of the valve body (1); a through hole (13) is provided in the middle of the flow velocity ring plate (12); the inner wall of the sealing block (8) is arranged to fit the outer wall of the flow velocity ring plate (12); two groups of limit blocks (14) are provided at the top and bottom of the inner wall of the valve body (1); each group of limit blocks (14) has two limit blocks (14) and are symmetrically distributed; the sealing block (8) is located between the two groups of limit blocks (14); a movable groove (15) is provided on the surface of the valve body (1) above the flow velocity ring plate (12); a sealing block (16) is provided on the side wall of the movable groove (15); the sealing block (8) is slidably connected in the movable groove (15) and abuts against the sealing block (16).

2. A waterproof stainless steel gate valve according to claim 1, characterized in that: The top of the valve body (1) is fixedly connected to a movable cylinder (2), the top of the movable cylinder (2) is fixedly connected to a valve seat (3), the top of the valve seat (3) is threadedly connected to a valve cover (5) via bolts (4), the top of the valve cover (5) is provided with a bearing (22), and a valve stem (21) is rotatably connected inside the bearing (22).

3. A waterproof stainless steel gate valve according to claim 2, characterized in that: The top of the valve stem (21) is fixedly connected to a hand wheel (23), the bottom of the valve stem (21) passes through the valve cover (5) and extends into the valve seat (3), the bottom of the valve stem (21) is fixedly connected to a main gear (19), and a pair of secondary gears (18) are meshed at both ends of the main gear (19).

4. A waterproof stainless steel gate valve according to claim 3, characterized in that: A screw rod (17) is fixedly connected to the bottom of the secondary gear (18), and the other end of the screw rod (17) passes through the valve seat (3) and extends into the movable cylinder (2). A sealing ring (20) is provided on the surface of the screw rod (17) at the bottom of the valve seat (3).

5. The waterproof stainless steel gate valve according to claim 1, characterized in that: The inner wall of the sealing block (8) is provided with two sealing grooves (9), and a sealing ring (10) is arranged in the sealing groove (9). A pair of sliding sleeves (11) are symmetrically arranged at the top of the two side walls of the sealing block (8), and the sliding sleeves (11) are threadedly connected to the screw rod (17).

6. A waterproof stainless steel gate valve according to claim 1, characterized in that: A fixing block (24) is fixedly connected to the inner wall of one side of the valve body (1), a mounting groove (25) is provided on one side of the fixing block (24), a mounting plate (26) is installed in the mounting groove (25), and a filter screen (27) is fixedly connected to the inner wall of the mounting plate (26).

7. A waterproof stainless steel gate valve according to claim 1, characterized in that: The inner wall of the valve body (1) is provided with a protective lining (6), the outer walls of the valve body (1) and the movable cylinder (2) are both provided with sound insulation cotton (28), the two ends of the valve body (1) are fixedly connected with flanges (29), and the inner wall of the flange (29) is provided with a packing (30).

8. The waterproof stainless steel gate valve according to claim 1, characterized in that: The flow rate device (7), the protective lining (6), the fixing block (24) and the sealing ring (10) are all made of polytetrafluoroethylene, and the surfaces of the valve body (1) and the movable cylinder (2) are both coated with waterproof paint.

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