Double-section sealing gate valve

Abstract

The utility model discloses a double-section sealing gate valve, and relates to the technical field of sealing gate valves, the double-section sealing gate valve comprises a gate plate lifting cylinder, an upper side machine base and a sealing gate valve body, the upper side machine base is installed and connected on the upper end position of the sealing gate valve body, and the inner side of the upper end of the upper side machine base is provided with the gate plate lifting cylinder. A double-section lifting mechanism is arranged at the position, located in the upper side machine base, of the lower end of a telescopic rod of the gate plate lifting cylinder, a gate valve gate plate is arranged at the position, located in the sealing gate valve body, of the lower end of the double-section lifting mechanism, and a bottom plugging plate is arranged at the position, located on the sealing gate valve body, of the lower end of the gate valve gate plate. And the flashboard lifting cylinder is electrically connected with an external controller. By means of the double-section lifting mechanism structure, the two gate valve flashboards can be driven to conduct lifting plugging, plugging is tighter through plugging of the two gate valve flashboards, and when a single gate valve flashboard is damaged, the overall plugging sealing performance cannot be affected.

Description

Technical Field

[0001] The utility model relates to the technical field of sealed gate valves, in particular to a double-section sealed gate valve. Background Art

[0002] The opening and closing parts of the hard-sealed gate valve are the gate disc, and 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.

[0003] The existing Chinese patent CN113062994B disclosed a gate valve on May 17, 2022, including a valve body, a valve cover, a valve stem, a gate plate and a handwheel. The valve cover is fixedly installed on the upper end of the middle part of the valve body, the middle part of the valve cover is connected to the valve stem in a rotatable manner, the lower side of the valve stem is connected to the gate plate in a threaded manner, and the handwheel is fixedly installed on the upper outer end face of the valve stem. The valve body includes a cylinder, a bolt, a nut, a rubber ring, a connecting ring, a rubber plate, a water outlet plug and a sliding block.

[0004] However, when the above device closes the internal flow channel of the valve body, it closes and blocks the flow channel through the gate plate inside the valve body. The gate plate is a single-plate structure, so when the gate plate is damaged to a certain extent, the whole gate cannot be effectively closed and blocked, and it is not very tight when closing and blocking, which is prone to leakage. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art, and a double-stage sealing gate valve is proposed. Through the double-stage lifting mechanism structure, the two gate valve gate plates can be driven to lift and close. After the two gate valve gate plates are closed, the sealing is tighter, and when a single one is damaged, it will not affect the overall sealing sealing.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A double-stage sealing gate valve, comprising a gate lift cylinder, an upper machine base and a sealing gate valve body, wherein the upper machine base is installed and connected to the upper end position of the sealing gate valve body, a gate lift cylinder is arranged on the inner side of the upper end of the upper machine base, the lower end of the telescopic rod of the gate lift cylinder is located inside the upper machine base and a double-stage lifting mechanism is arranged, the lower end of the double-stage lifting mechanism is located inside the sealing gate valve body and a gate valve is arranged, the lower end of the gate valve is located on the sealing gate valve body and a bottom blocking plate is arranged, and the gate lift cylinder is electrically connected to an external controller;

[0008] The two-stage lifting mechanism includes a coupling, a connecting end rod, a movable disc and a mounting hole. The inner side of the upper end of the movable disc is provided with a mounting hole, connecting end rods are provided on both sides of the lower end of the movable disc, and a coupling is provided at the lower end of the connecting end rod, and the coupling is connected to the gate plate of the gate valve.

[0009] Through the above technical scheme: when the telescopic rod of the gate lift cylinder is extended and retracted inside the upper machine base, the gate lift cylinder can drive the double-stage lifting mechanism to lift and lower, and the double-stage lifting mechanism can drive the gate valve to lift and lower, so that it is convenient to open and close the flow channel inside the sealed gate valve body, and it is convenient to control the conveying and discharge of the sealed gate valve body. When personnel open the bottom sealing plate at the lower end of the sealed gate valve body, it is convenient to use the bottom sealing plate to discharge impurities.

[0010] The utility model is further configured that the couplings are provided with two in total, and the couplings are symmetrically arranged on the lower end of the movable disc.

[0011] Through the above technical solution: because there are two couplings in total, and the couplings are symmetrically arranged on the bottom of the movable disc, the two gate valve gates can be fixed under the movable disc through the coupling to perform double-stage sealing, so that the sealing is tighter, and when a single one is damaged, it will not affect the overall sealing.

[0012] The utility model is further configured as follows: the gate valve gate includes a lower inclined surface, a gate housing and an upper end column, the lower end of the upper end column is provided with a gate housing, the lower end outer side of the gate housing is provided with a lower inclined surface, and the upper end column is connected to the coupling.

[0013] Through the above technical solution: due to the gate plate structure of the gate valve, it is convenient to use for blocking.

[0014] The utility model is further configured that the gate plate housing is sleeved on the sealing gate valve body through a lower side inclined surface.

[0015] Through the above technical solution: because the gate housing is sleeved on the sealing gate valve body through the lower inclined surface, it is more convenient to close and seal.

[0016] The utility model is further configured such that the bottom sealing plate includes assembly screws, a sealing plate shell and an upper rubber pad, the lower end periphery of the sealing plate shell is provided with assembly screws, the upper end of the sealing plate shell is provided with an upper rubber pad, and the sealing plate shell is connected to the sealing gate valve body by the assembly screws.

[0017] Through the above technical solution: due to the bottom sealing plate structure, it is easy to install and use.

[0018] The utility model is further configured that the gate valve gate plates are provided with two in total, and the gate valve gate plates are symmetrically arranged on the coupling.

[0019] Through the above technical solution: because there are two gate valve gates in total, and the gate valve gates are symmetrically arranged on the coupling, they can be used for two-stage closing and blocking.

[0020] The utility model is further configured that the double-stage lifting mechanism is sleeved in the middle of the upper machine base.

[0021] Through the above technical solution: because the double-stage lifting mechanism is sleeved in the middle of the upper machine base, it is convenient to use the limiting activity.

[0022] The utility model is further configured that the gate lift cylinder and the double-stage lift mechanism are connected by screws, and a sealing rubber pad is provided at the connection between the gate lift cylinder and the double-stage lift mechanism.

[0023] Through the above technical solution: because the gate lift cylinder and the two-stage lift mechanism are connected by screws, and a sealing rubber pad is provided at the connection between the gate lift cylinder and the two-stage lift mechanism, it is convenient to install and fix them for use, and they are more tightly and firmly fixed.

[0024] The beneficial effects of the utility model are:

[0025] 1. Through the double-stage lifting mechanism structure, the two gate valve discs can be driven to lift and close. After the two gate valve discs are closed, the sealing is tighter, and when a single one is damaged, it will not affect the overall sealing performance.

[0026] 2. By setting up a double-stage lifting mechanism structure, the two gate valve gates can be driven to rise and fall. The movable disc of the double-stage lifting mechanism can be installed on the telescopic rod of the gate plate lifting cylinder through the mounting hole on the inner side of the upper end. When the telescopic rod of the gate plate lifting cylinder is lifted, the gate plate lifting cylinder can drive the movable disc to rise and fall, and the movable disc can drive the connecting end rod to rise and fall, and the connecting end rod can drive the coupling to rise and fall, and the coupling can drive the gate valve gate to rise and fall, so it is convenient to control the opening and closing of the gate valve gate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the side cross-sectional structure of a double-section sealing gate valve proposed by the utility model;

[0028] Figure 2 This is a schematic diagram of the structure of a double-stage lifting mechanism of a double-stage sealing gate valve proposed by the utility model;

[0029] Figure 3 A schematic diagram of the gate valve plate structure of a double-stage sealing gate valve proposed by the utility model;

[0030] Figure 4 The utility model is a schematic diagram of the bottom sealing plate structure of a double-stage sealing gate valve.

[0031] In the figure: 1. gate lift cylinder; 2. upper machine base; 3. two-stage lift mechanism; 31. coupling; 32. connecting end rod; 33. movable disc; 34. mounting hole; 4. sealing gate valve body; 5. bottom sealing plate; 51. assembly screws; 52. sealing plate shell; 53. upper rubber pad; 6. gate valve; 61. lower inclined surface; 62. gate shell; 63. upper end column. DETAILED DESCRIPTION

[0032] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0035] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0036] Reference Figure 1-Figure 4 A double-stage sealing gate valve comprises a gate lift cylinder 1, an upper machine base 2 and a sealing gate valve body 4. The upper machine base 2 is installed and connected to the upper end position of the sealing gate valve body 4. The gate lift cylinder 1 is arranged on the inner side of the upper end of the upper machine base 2. The lower end of the telescopic rod of the gate lift cylinder 1 is located in the upper machine base 2 and a double-stage lifting mechanism 3 is arranged inside. The lower end of the double-stage lifting mechanism 3 is located in the sealing gate valve body 4 and a gate valve plate 6 is arranged inside. The lower end of the gate valve plate 6 is located on the sealing gate valve body 4 and a bottom blocking plate 5 is arranged. The gate lift cylinder 1 is electrically connected to an external controller.

[0037] The double-stage lifting mechanism 3 includes a coupling 31, a connecting end rod 32, a movable disc 33 and a mounting hole 34. The upper inner side of the movable disc 33 is provided with a mounting hole 34, and the lower sides of the movable disc 33 are provided with connecting end rods 32. The lower end of the connecting end rod 32 is provided with a coupling 31. The coupling 31 is connected to the gate valve plate 6. The movable disc 33 of the double-stage lifting mechanism 3 can be correspondingly mounted on the telescopic rod of the gate plate lifting cylinder 1 through the mounting hole 34 on the inner side of the upper end. In this way, when the telescopic rod of the gate plate lifting cylinder 1 is lifted, the gate plate lifting cylinder 1 can drive the movable disc 33 to lift, the movable disc 33 can drive the connecting end rod 32 to lift, the connecting end rod 32 can drive the coupling 31 to lift, and the coupling 31 can drive the gate valve plate 6 to lift, so that it is convenient to control the opening and closing of the gate valve plate 6.

[0038] There are two couplings 31 in total, and the couplings 31 are symmetrically arranged below the movable disc 33, so that the two gate valve gates 6 can be fixed below the movable disc 33 through the couplings 31 for double-stage sealing, which is tighter during sealing, and when a single one is damaged, it will not affect the overall sealing.

[0039] Specifically, the gate valve plate 6 includes a lower inclined surface 61, a gate plate housing 62 and an upper end column 63. The lower end of the upper end column 63 is provided with a gate plate housing 62, and the lower end outer side of the gate plate housing 62 is provided with a lower inclined surface 61. The upper end column 63 is connected to the coupling 31. The upper end column 63 of the gate valve plate 6 is fixedly connected to the coupling 31, so that when the coupling 31 is lowered, the coupling 31 can drive the upper end column 63 to move downward, and the upper end column 63 can drive the gate plate housing 62 to move downward. The gate plate housing 62 can be sleeved in the inside of the sealed gate valve body 4 for closed blocking due to the lower inclined surface 61 on the outer side of the lower end;

[0040] The gate housing 62 is sleeved on the sealing gate valve body 4 through the lower side inclined surface 61, which is more convenient when closing and blocking.

[0041] Specifically, the bottom sealing plate 5 includes an assembly screw 51, a sealing plate shell 52 and an upper rubber pad 53. The lower end circumference of the sealing plate shell 52 is provided with an assembly screw 51, and the upper end of the sealing plate shell 52 is provided with an upper rubber pad 53. The sealing plate shell 52 is connected to the sealing gate valve body 4 by the assembly screw 51. The sealing plate shell 52 of the bottom sealing plate 5 is fixedly connected to the sealing gate valve body 4 by the assembly screw 51, so that the sealing plate shell 52 is easy to install and place. The sealing plate shell 52 is tighter and more secure when closed and sealed due to the upper rubber pad 53 at the upper end.

[0042] Specifically, two gate valve plates 6 are provided, and the gate valve plates 6 are symmetrically arranged on the coupling 31, so that they can be used for two-stage closing and blocking.

[0043] Specifically, the double-stage lifting mechanism 3 is sleeved in the middle of the upper machine base 2, so as to facilitate the use of limiting activities.

[0044] Specifically, the gate lift cylinder 1 and the double-stage lift mechanism 3 are connected by screws, and a sealing rubber pad is provided at the connection between the gate lift cylinder 1 and the double-stage lift mechanism 3, so that it is easy to install and fix for use, and the fixation is tighter and more firm.

[0045] Working principle: When in use, when the telescopic rod of the gate lift cylinder 1 is extended and retracted inside the upper machine base 2, the gate lift cylinder 1 can drive the two-stage lifting mechanism 3 to lift and lower, and the two-stage lifting mechanism 3 can drive the gate valve 6 to lift and lower, so that it is convenient to open and close the flow channel inside the sealed gate valve body 4, and it is convenient to control the delivery and discharge of the sealed gate valve body 4. When personnel open the bottom sealing plate 5 at the lower end of the sealed gate valve body 4, it is convenient to use the bottom sealing plate 5 to discharge impurities.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A two-stage sealing gate valve, comprising a gate lift cylinder (1), an upper machine base (2) and a sealing gate valve body (4), wherein the upper machine base (2) is mounted and connected to the upper end of the sealing gate valve body (4), and a gate lift cylinder (1) is arranged on the inner side of the upper end of the upper machine base (2), characterized in that: The lower end of the telescopic rod of the gate lift cylinder (1) is located inside the upper machine base (2) and a double-stage lift mechanism (3) is provided. The lower end of the double-stage lift mechanism (3) is located inside the sealed gate valve body (4) and a gate valve gate (6) is provided. The lower end of the gate valve gate (6) is located on the sealed gate valve body (4) and a bottom blocking plate (5) is provided. The gate lift cylinder (1) is electrically connected to an external controller. The double-stage lifting mechanism (3) comprises a coupling (31), a connecting end rod (32), a movable disc (33) and a mounting hole (34); the mounting hole (34) is arranged on the inner side of the upper end of the movable disc (33); connecting end rods (32) are arranged on both sides of the lower end of the movable disc (33); a coupling (31) is arranged at the lower end of the connecting end rod (32); and the coupling (31) is connected to the gate plate (6) of the gate valve.

2. A double-stage sealing gate valve according to claim 1, characterized in that: There are two couplings (31) in total, and the couplings (31) are symmetrically arranged below the movable disc (33).

3. A double-stage sealing gate valve according to claim 1, characterized in that: The gate valve gate (6) comprises a lower inclined surface (61), a gate housing (62) and an upper end column (63); the gate housing (62) is provided at the lower end of the upper end column (63); the lower inclined surface (61) is provided on the outer side of the lower end of the gate housing (62); and the upper end column (63) is connected to the coupling (31).

4. A double-stage sealing gate valve according to claim 3, characterized in that: The gate housing (62) is sleeved on the sealing gate valve body (4) via the lower inclined surface (61).

5. A double-stage sealing gate valve according to claim 1, characterized in that: The bottom blocking plate (5) comprises an assembly screw (51), a blocking plate shell (52) and an upper rubber pad (53); the assembly screw (51) is arranged on the circumferential side of the lower end of the blocking plate shell (52); the upper end of the blocking plate shell (52) is arranged with an upper rubber pad (53); the blocking plate shell (52) is connected to the sealing gate valve body (4) via the assembly screw (51).

6. A double-stage sealing gate valve according to claim 3, characterized in that: There are two gate valve plates (6) in total, and the gate valve plates (6) are symmetrically arranged on the coupling (31).

7. A double-stage sealing gate valve according to claim 1, characterized in that: The double-stage lifting mechanism (3) is sleeved in the middle of the upper machine base (2).

8. A double-stage sealing gate valve according to claim 1, characterized in that: The gate lift cylinder (1) and the double-stage lift mechanism (3) are connected via screws, and a sealing rubber pad is provided at the connection between the gate lift cylinder (1) and the double-stage lift mechanism (3).

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