Gate valve with good sealing performance

Abstract

The utility model relates to a gate valve with good sealing performance, which belongs to the technical field of valve pipeline devices and comprises a gate frame, a threaded rod with one end penetrating through and extending to the inner side of the gate frame is slidably connected to the outer side of the gate frame, and a gate is rotatably connected to the end, located on the inner side of the gate frame, of the threaded rod. The inner side of the plugboard frame is provided with a sealing piece for sealing the plugboard; the sealing piece comprises two sealing rings, one ends of the sealing rings are connected to the inner side of the inserting plate frame in a sliding mode, and the inner bottom wall and the inner top wall of the inserting plate frame are fixedly connected with supporting rods, and one ends of the supporting rods extend to the inner sides of the sealing rings. According to the gate valve with the good sealing performance, due to the fact that the sealing ring can be supported by the supporting rod to slide in the gate frame, when the gate is driven by the threaded rod to the inner side of the gate frame, the sealing ring can be extruded to make a first sealing ring on the sealing ring abut against the inner wall of the gate frame, and a second sealing ring on the gate tightly abut against the sealing ring; therefore, the sealing performance of the plug board after being transversely moved and closed is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve pipeline devices, in particular to a plug-in valve with good sealing performance. Background Art

[0002] The gate valve is also called a manual knife-type gate valve. The knife-type gate valve is a valve in which the gate is always in close contact with the valve seat. The principle is that a round or square opening of the same diameter is opened on the gate. The round opening and the diameter of the gate are completely separated and matched by opening and closing the gate. There is no groove in the valve body diameter, the medium will not be blocked, and it has full-diameter flow characteristics. It is often used in metallurgy, mining, building materials, food and other fields. In the construction of civil air defense equipment, gate valves are often used at the joints of ventilation ducts, which can quickly and easily control the air circulation on both sides of the duct and the amount of air circulation.

[0003] In order to facilitate the smooth opening and closing path of the gate valve, a rotatable circular support body is provided under the gate valve, which rolls as the gate valve is pulled out, thereby reducing the resistance during the opening and closing process of the gate valve. However, the opening and closing of the gate valve is not a necessary operation in daily life. When it is not used frequently, the circular support body is affected by the environment and is prone to corrosion such as rust, which limits the movement of the support body and makes it inconvenient to move the gate when it is needed. In addition, after the gate is closed, the connection between the gate and the gate frame is not tightly closed, resulting in a poor sealing effect. Therefore, a gate valve with good sealing performance is proposed to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a plug-in valve with good sealing performance, which has the advantages of improving the sealing effect and solves the problem of poor sealing effect.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a plug-in valve with good sealing performance, comprising a plug-in frame, the outer side of the plug-in frame is slidably connected to a threaded rod with one end penetrating and extending to the inner side thereof, one end of the threaded rod located on the inner side of the plug-in frame is rotatably connected to the plug-in plate, and the inner side of the plug-in frame is provided with a sealing member for sealing the plug-in plate;

[0006] The sealing member comprises two sealing rings, one end of which is slidably connected to the inner side of the plugboard frame, the inner bottom wall and the inner top wall of the plugboard frame are both fixedly connected to a support rod with one end extending to the inner side of the sealing ring, a support spring located on the outer side of the support rod is fixedly connected between the sealing ring and the inner side of the plugboard frame, a first sealing ring with one end in contact with the inner wall of the plugboard is embedded on the outer side of the sealing ring, and a second sealing ring with one end in contact with the sealing ring is embedded on the upper and lower sides of the plugboard;

[0007] A protective piece for supporting the threaded rod is arranged on the outer side of the plugboard rack.

[0008] Furthermore, the inner side wall of the plug-in board rack is provided with a through hole, and the specification of the through hole is adapted to the specification of the threaded rod.

[0009] Furthermore, the inner side wall of the plug-in plate rack is provided with a guide groove located outside the plug-in plate, and the inner top wall and the inner bottom wall of the plug-in plate rack are both provided with material passing holes.

[0010] Furthermore, the number of the support rods is eight, and the eight support rods are equidistantly and symmetrically distributed on the inner top wall and the inner bottom wall of the plugboard rack in groups of four by four.

[0011] Furthermore, the installation slot is in a convex shape, and the support spring is connected between the installation slot and the inner side of the plug-in board rack.

[0012] Furthermore, the protective member comprises a support frame having one end fixedly connected to the outer side of the plugboard frame, a stop frame is sleeved on the outer side of the support frame, a stop block is fixedly connected to the stop frame and the outer side of the support frame, and an insert block is inserted on the outer side of the stop block.

[0013] Furthermore, a slot located outside the insert block is provided on the outer side of the stopper, a threaded hole located outside the threaded rod is provided on the inner side wall of the support frame, and the specification of the inner side of the stopper is matched with the specification of the outer side of the support frame.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. The plug-in valve with good sealing performance has a sealing ring that can be supported and slid in the plug-in frame by the support rod. Therefore, when the plug-in is driven to the inside of the plug-in frame by the threaded rod, the sealing ring can be squeezed to make the first sealing ring on the sealing ring contact with the inner wall of the plug-in frame, and the second sealing ring on the plug-in plate can be tightly contacted with the sealing ring, thereby increasing the sealing performance of the plug-in after the lateral movement and closure.

[0016] 2. The plug valve with good sealing performance has a support frame and a retaining frame located on the outside of the threaded rod. When the threaded rod is not in use, the retaining frame can be limited and fixed by a plug block inserted on the outside of the stop block, so as to shield and seal the threaded rod, prevent dust and rust on the threaded rod, and improve the stability of the threaded rod when it rotates. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 This is a front cross-sectional view of the overall structure of the utility model;

[0019] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4It is a three-dimensional schematic diagram of the sealing ring structure of the utility model.

[0021] In the figure: 1 plug-in plate frame, 2 protective member, 21 support frame, 22 blocking frame, 23 block, 24 plug-in block, 3 plug-in plate, 4 threaded rod, 5 sealing member, 51 sealing ring, 52 first sealing ring, 53 supporting spring, 54 mounting hole, 55 supporting rod, 56 second sealing ring. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1 In this embodiment, a gate valve with good sealing performance includes a gate frame 1, a threaded rod 4 having one end penetrating and extending to the inner side of the gate frame 1 is slidably connected to the outer side of the gate frame 1, a gate 3 is rotatably connected to one end of the threaded rod 4 located on the inner side of the gate frame 1, and a sealing member 5 for sealing the gate 3 is arranged on the inner side of the gate frame 1;

[0024] A protective member 2 for supporting the threaded rod 4 is arranged on the outer side of the plug-in board frame 1, and the protective member 2 includes a support frame 21 with one end fixedly connected to the outer side of the plug-in board frame 1, and a blocking frame 22 is sleeved on the outer side of the support frame 21, and a blocking block 23 is fixedly connected to the outer side of the blocking frame 22 and the support frame 21, and an inserting block 24 is inserted on the outer side of the blocking block 23.

[0025] In this embodiment, when the threaded rod 4 is not in use, the blocking frame 22 is limited and fixed by the plug block 24 inserted into the outside of the blocking block 23 to shield and seal the threaded rod 4, to prevent dust and rust on the threaded rod 4, and to improve the stability of the threaded rod 4 when rotating.

[0026] Among them, a slot located on the outside of the plug block 24 is opened on the outer side of the block 23, and the block 23 is U-shaped, so that the block 23 can be inserted into the two block blocks 23 to limit and fix the two block blocks 23. A threaded hole located on the outside of the threaded rod 4 is opened on the inner wall of the support frame 21. The specifications of the inner side of the block frame 22 are compatible with the specifications of the outer side of the support frame 21, thereby increasing the airtightness of the block frame 22 when it is sleeved on the outer side of the support frame 21.

[0027] See also Figure 2-4In this embodiment, the sealing member 5 includes two sealing rings 51, one end of which is slidably connected to the inner side of the plugboard rack 1. The inner bottom wall and the inner top wall of the plugboard rack 1 are fixedly connected to a support rod 55, one end of which extends to the inner side of the sealing ring 51. A support spring 53 located on the outer side of the support rod 55 is fixedly connected between the sealing ring 51 and the inner side of the plugboard rack 1. A first sealing ring 52, one end of which is in contact with the inner wall of the plugboard rack 1, is embedded on the outer side of the sealing ring 51. Second sealing rings 56, one end of which is in contact with the sealing ring 51, are embedded on the upper and lower sides of the plugboard 3.

[0028] In this embodiment, when the plug board 3 is driven to the inner side of the plug board rack 1 by the threaded rod 4, the sealing ring 51 can be squeezed so that the first sealing ring 52 on the sealing ring 51 contacts the inner wall of the plug board rack 1, and the second sealing ring 56 on the plug board 3 contacts the sealing ring 51 tightly, thereby increasing the sealing performance of the plug board 3 after it is laterally moved and closed.

[0029] The inner side wall of the plug-in board rack 1 is provided with a through hole, the specification of the through hole is matched with the specification of the threaded rod 4 , so that the plug-in board 3 driven by the threaded rod 4 can be moved out of the plug-in board rack 1 .

[0030] In addition, the inner side wall of the plugging plate rack 1 is provided with a guide groove located outside the plugging plate 3, so that the plugging plate 3 can move stably laterally in the plugging plate rack 1 when driven by the threaded rod 3, and the inner top wall and the inner bottom wall of the plugging plate rack 1 are both provided with material passing holes.

[0031] Secondly, there are eight support rods 55 , which are symmetrically distributed in groups of four by four on the inner top wall and the inner bottom wall of the plug-in board rack 1 . The two sealing rings 51 are supported by the eight support rods 55 , and the support rings 51 are conical.

[0032] Then, the installation groove 54 is in a convex shape, and the support spring 53 is connected between the installation groove 54 and the inner side of the plug-in board rack 1 , and the sealing ring 51 is supported and reset by the support spring 53 .

[0033] The working principle of the above embodiment is:

[0034] Since the sealing ring 51 can be supported and slid by the support rod 55 in the plug-in plate rack 1, when the plug-in plate 3 is driven to the inner side of the plug-in plate rack 1 by the threaded rod 4, the sealing ring 51 can be squeezed so that the first sealing ring 52 on the sealing ring 51 contacts the inner wall of the plug-in plate rack 1, and the second sealing ring 56 on the plug-in plate 3 contacts tightly with the sealing ring 51, thereby increasing the sealing performance of the plug-in plate 3 after lateral movement and closure. The support frame 21 and the blocking frame 22 located on the outside of the threaded rod 4 can limit and fix the blocking frame 22 by the plug block 24 inserted on the outside of the blocking block 23 when the threaded rod 4 is not in use, so as to shield and seal the threaded rod 4, prevent dust and rust on the threaded rod 4, and improve the stability of the threaded rod 4 when rotating.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0036] 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 with good sealing performance, comprising a gate frame (1), characterized in that: The outer side of the plug-in plate rack (1) is slidably connected to a threaded rod (4) having one end penetrating and extending to the inner side thereof, and one end of the threaded rod (4) located on the inner side of the plug-in plate rack (1) is rotatably connected to the plug-in plate (3), and a sealing member (5) for sealing the plug-in plate (3) is provided on the inner side of the plug-in plate rack (1); The sealing member (5) comprises two sealing rings (51) one end of which is slidably connected to the inner side of the plugboard rack (1); the inner bottom wall and the inner top wall of the plugboard rack (1) are both fixedly connected to a support rod (55) one end of which extends to the inner side of the sealing ring (51); a support spring (53) located on the outer side of the support rod (55) is fixedly connected between the sealing ring (51) and the inner side of the plugboard rack (1); a first sealing ring (52) is embedded on the outer side of the sealing ring (51) and one end of which contacts the inner wall of the plugboard rack (1); and a second sealing ring (56) is embedded on the upper and lower sides of the plugboard (3) and one end of which contacts the sealing ring (51); A protective piece (2) for supporting a threaded rod (4) is arranged on the outer side of the plugboard rack (1).

2. A gate valve with good sealing performance according to claim 1, characterized in that: The inner side wall of the plug-in board rack (1) is provided with a through hole, and the specifications of the through hole are compatible with the specifications of the threaded rod (4).

3. A gate valve with good sealing performance according to claim 1, characterized in that: The inner side wall of the inserting plate rack (1) is provided with a guide groove located outside the inserting plate (3), and the inner top wall and the inner bottom wall of the inserting plate rack (1) are both provided with material passing holes.

4. A gate valve with good sealing performance according to claim 1, characterized in that: The number of the support rods (55) is eight, and the eight support rods (55) are arranged in groups of four by four and are equidistantly and symmetrically distributed on the inner top wall and the inner bottom wall of the plugboard rack (1).

5. A gate valve with good sealing performance according to claim 1, characterized in that: The support spring (53) is connected between the mounting groove (54) and the inner side of the plugboard rack (1); the mounting groove (54) is in a convex shape.

6. A gate valve with good sealing performance according to claim 1, characterized in that: The protective member (2) comprises a support frame (21) having one end fixedly connected to the outer side of the plugboard frame (1); a stop frame (22) is sleeved on the outer side of the support frame (21); a stop block (23) is fixedly connected to the outer side of the stop frame (22) and the support frame (21); and an insert block (24) is inserted on the outer side of the stop block (23).

7. A gate valve with good sealing performance according to claim 6, characterized in that: The outer side of the stopper (23) is provided with a slot located on the outer side of the inserting block (24), the inner side wall of the support frame (21) is provided with a threaded hole located on the outer side of the threaded rod (4), and the specifications of the inner side of the stopper (22) are compatible with the specifications of the outer side of the support frame (21).

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