Gate valve

Abstract

The utility model relates to the technical field of gate valves, in particular to a gate valve which comprises a mounting frame, a valve plate, a connecting mechanism and a limiting mechanism, the valve plate is connected with the mounting frame through the connecting mechanism, the connecting mechanism comprises a threaded rod, a threaded hole, a first bearing and a connecting block, the first bearing is arranged on the valve plate, and the connecting block is arranged in the threaded hole. The threaded hole is formed in the top of the mounting frame, one end of the threaded rod is connected with the first bearing, the other end of the threaded rod penetrates through the threaded hole to be connected with the connecting block, and the limiting mechanism comprises a second bearing, a rotating block, a hinge assembly, a movable block, an open groove, a sliding groove, a sliding block, a limiting plate and an electromagnet. The second bearing is arranged on the mounting frame, one end of the rotating block is rotationally connected with the second bearing, the other end of the second bearing abuts against the connecting block, and the gate valve solves the problem that an existing device is not provided with a limiting device.

Description

Technical Field

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

[0002] As we all know, the gate valve is also called a manual knife-type gate valve. The knife-type gate valve is a valve in which the gate and the valve seat are always in close contact and sealed. The principle is that a round opening of the size of the diameter is opened on the gate, and the round opening on the gate is completely separated and matched with the diameter through the opening and closing of the gate. The advantage of this valve is that there is no groove in the valve body diameter, the medium will not be blocked, and it has a full-diameter flow characteristic. Its sealing structure can be divided into soft sealing and hard sealing structures. The penetrating knife gate valve has the characteristics of precise structure, good processability, and compact structure. The sealing valve seat is a movable structure design with anti-wear and automatic compensation functions, so it has a longer life. During the closing and opening process, the valve seat and the gate are always in close contact, so that the valve opening and closing force is stable, and it has the characteristics of cutting off the medium.

[0003] However, the existing gate valves generally do not have a protective device, and the valve plate is generally connected by a threaded rod, so that the threaded rod is easy to rotate when subjected to external force, causing the valve plate to move. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a plug-in valve.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a plug valve, comprising a mounting frame, a valve plate, a connecting mechanism and a limiting mechanism, wherein the valve plate is connected to the mounting frame through the connecting mechanism, the connecting mechanism comprises a threaded rod, a threaded hole, a first bearing and a connecting block, the first bearing is arranged on the valve plate, the threaded hole is opened on the top of the mounting frame, one end of the threaded rod is connected to the first bearing, the other end of the threaded rod passes through the threaded hole and is connected to the connecting block, the limiting mechanism comprises a second bearing, a rotating block, a hinge assembly, a movable block, a slot, a slide groove, a slider, a limiting plate and an electromagnet, The second bearing is arranged on the mounting frame, one end of the rotating block is rotatably connected to the second bearing, and the other end of the second bearing abuts against the connecting block, the hinge assembly is arranged on the rotating block, the slot is arranged on the mounting frame, one end of the movable block is hinged to the hinge assembly, the other end of the movable block extends into the slot, the slide slot is arranged on the mounting frame, one end of the slider is slidably connected to the slide slot, the other end of the slider is connected to the limit plate, the limit plate abuts against the movable block, one end of the electromagnet is arranged on the limit plate, and the other end of the electromagnet is adsorbed on the mounting frame.

[0006] In order to improve the sliding effect, the utility model is improved in that the sliding block matches the sliding groove.

[0007] In order to achieve the wear-resistant effect, the utility model is improved in that the outer wall of the installation frame is provided with a wear-resistant layer, and the wear-resistant layer is fixedly connected to the outer wall of the installation frame.

[0008] In order to improve the wear-resistant effect, the utility model is improved in that the wear-resistant layer is made of PVC material.

[0009] In order to improve the effect of the engagement, the utility model is improved in that the slot matches the movable block.

[0010] In order to improve the connection effect, the utility model is improved in that the connection block is fixedly connected to the threaded rod.

[0011] Compared with the prior art, the utility model provides a gate valve, which has the following beneficial effects:

[0012] The plug valve can limit the valve plate connected to the installation frame through the connecting mechanism through the limiting mechanism, so as to avoid the threaded rod being twisted to cause the valve plate to move when the valve plate does not want to be moved. When the valve plate is to be raised, the limiting mechanism is controlled to stop limiting the connecting mechanism, and then the valve plate can be raised through the connecting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 For this utility model Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0015] Figure 3 This is a schematic diagram of the shaft side structure of the utility model;

[0016] Figure 4 For this utility model Figure 1 A front view of

[0017] In the figure: 1. mounting frame; 2. valve plate; 3. connecting mechanism; 4. threaded rod; 5. first bearing; 6. connecting block; 7. limiting mechanism; 8. second bearing; 9. rotating block; 10. hinge assembly; 11. movable block; 12. slot; 13. slide groove; 14. slider; 15. limiting plate; 16. electromagnet. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-4 A plug valve comprises a mounting frame 1, a valve plate 2, a connecting mechanism 3 and a limiting mechanism 7, wherein the valve plate 2 is connected to the mounting frame 1 through the connecting mechanism 3, the connecting mechanism 3 comprises a threaded rod 4, a threaded hole, a first bearing 5 and a connecting block 6, the first bearing 5 is arranged on the valve plate 2, the threaded hole is opened at the top of the mounting frame 1, one end of the threaded rod 4 is connected to the first bearing 5, the other end of the threaded rod 4 is connected to the connecting block 6 through the threaded hole, the limiting mechanism 7 comprises a second bearing 8, a rotating block 9, a hinge assembly 10, a movable block 11, a slot 12, a slide groove 13, a slider 14, a limiting plate 15 and an electromagnet 16, the second bearing 8 is arranged on the mounting frame 1 On the top, one end of the rotating block 9 is rotatably connected to the second bearing 8, and the other end of the second bearing 8 abuts on the connecting block 6. The hinge assembly 10 is arranged on the rotating block 9, and the slot 12 is arranged on the mounting frame 1. One end of the movable block 11 is hinged to the hinge assembly 10, and the other end of the movable block 11 extends into the slot 12. The slide groove 13 is arranged on the mounting frame 1, one end of the slider 14 is slidably connected to the slide groove 13, and the other end of the slider 14 is connected to the limit plate 15, and the limit plate 15 abuts on the movable block 11. One end of the electromagnet 16 is arranged on the limit plate 15, and the other end of the electromagnet 16 is adsorbed on the mounting frame 1.

[0020] When in use, first install the mounting frame 1 to a suitable position, and the valve plate 2 connected to the mounting frame 1 through the connecting mechanism 3 can be limited by the limiting mechanism 7 to prevent the threaded rod 4 from being twisted when the valve plate 2 is not desired to be moved, causing the valve plate 2 to move. When the valve plate 2 is desired to be raised, the electromagnet 16 is first closed so that the electromagnet 16 no longer adsorbs the mounting frame 1. The mounting frame 1 is made of iron material, so that the electromagnet 16 can adsorb the mounting frame 1, and then the slider 14 will descend on the slide groove 13 to separate the limiting plate 15 from the movable block 11, and then the movable block 11 on the hinge assembly 10 is rotated to separate the movable block 11 from the slot 12, and then the rotating block 9 on the second bearing 8 is rotated to separate the rotating block 9 from the connecting block 6, and then the connecting block 6 is twisted to make the threaded rod 4 rotate on the threaded hole, so that the valve plate 2 connected to the threaded rod 4 through the first bearing 5 can rise.

[0021] The slider 14 has poor stability when sliding on the slide groove 13 . To solve this problem, in this embodiment, the slider 14 matches the slide groove 13 .

[0022] The outer wall of the above-mentioned installation frame 1 is prone to wear. In order to solve this problem, in this embodiment, the outer wall of the installation frame 1 is provided with a wear-resistant layer, and the wear-resistant layer is fixedly connected to the outer wall of the installation frame 1. The position where the electromagnet 16 contacts the installation frame 1 is not provided with a wear-resistant layer to avoid affecting the adsorption effect of the electromagnet 16.

[0023] The wear-resistant layer may be made of any material. In order to improve the wear-resistant effect, in this embodiment, the wear-resistant layer is made of PVC material.

[0024] In order to improve the engagement effect, in this embodiment, the slot 12 matches the movable block 11 .

[0025] In order to improve the connection effect, in this embodiment, the connection block 6 is fixedly connected to the threaded rod 4.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gate valve, comprising a mounting frame (1), a valve plate (2), a connecting mechanism (3) and a limiting mechanism (7), characterized in that: The valve plate (2) is connected to the mounting frame (1) via the connecting mechanism (3), the connecting mechanism (3) comprising a threaded rod (4), a threaded hole, a first bearing (5) and a connecting block (6), the first bearing (5) being arranged on the valve plate (2), the threaded hole being opened at the top of the mounting frame (1), one end of the threaded rod (4) being connected to the first bearing (5), the other end of the threaded rod (4) passing through the threaded hole and being connected to the connecting block (6), the limiting mechanism (7) comprising a second bearing (8), a rotating block (9), a hinge assembly (10), a movable block (11), a slot (12), a slide groove (13), a slider (14), a limiting plate (15) and an electromagnet (16), the second bearing (8) being arranged on the mounting frame (1), one end of the rotating block (9) being connected to the first bearing (5), and the other end of the threaded rod (4) passing through the threaded hole and being connected to the connecting block (6). The second bearing (8) is rotatably connected, and the other end of the second bearing (8) abuts against the connecting block (6). The hinge assembly (10) is arranged on the rotating block (9). The slot (12) is arranged on the mounting frame (1). One end of the movable block (11) is hinged to the hinge assembly (10), and the other end of the movable block (11) extends into the slot (12). The slide groove (13) is arranged on the mounting frame (1). One end of the slider (14) is slidably connected to the slide groove (13), and the other end of the slider (14) is connected to the limit plate (15), and the limit plate (15) abuts against the movable block (11). One end of the electromagnet (16) is arranged on the limit plate (15), and the other end of the electromagnet (16) is adsorbed on the mounting frame (1).

2. A gate valve according to claim 1, characterized in that: The sliding block (14) matches the sliding groove (13).

3. A gate valve according to claim 2, characterized in that: The outer wall of the installation frame (1) is provided with a wear-resistant layer, and the wear-resistant layer is fixedly connected to the outer wall of the installation frame (1).

4. A gate valve according to claim 3, characterized in that: The wear-resistant layer is made of PVC material.

5. A gate valve according to claim 4, characterized in that: The slot (12) matches the movable block (11).

6. A gate valve according to claim 5, characterized in that: The connecting block (6) is fixedly connected to the threaded rod (4).

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