Stop valve with high sealing performance

Abstract

The utility model discloses a stop valve with high sealing performance, which comprises a main body unit, a valve element and a valve element, the main body unit comprises a lower valve body, an upper valve body is fixedly arranged on the lower valve body, a fixed disc is fixedly arranged at the upper end of the upper valve body, and a knob is rotatably arranged on the fixed disc; the working unit comprises a circulation pipeline arranged in the lower valve body, an adjusting component is arranged in the upper valve body, a preliminary sealing component is arranged on the adjusting component, a baffle is fixedly arranged in the circulation pipeline, a fixing seat is fixedly arranged on the lower valve body, and a second sealing component is arranged on the fixing seat. A rotary knob is rotated, a lifting block is driven to move upwards through a threaded rod, then a sealing ring and a working plate are moved to proper positions, the working plate drives a sliding plate to move transversely through a limiting block, then a connecting plate and a baffle are sealed through a clamping block, and primary sealing is achieved.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, and in particular to a gate valve with high sealing performance. Background Technology

[0002] Gate valves, also known as shut-off valves, are a type of forced-seal valve widely used in industries such as chemical, pharmaceutical, power, and metallurgy. They are mainly used to control the flow direction of liquids.

[0003] In existing gate valves, when the valve disc is in contact with the valve seat, there is still a certain gap between the valve disc and the valve seat. Some media will flow out through the gap between the valve disc and the valve seat, thus affecting the sealing effect of the gate valve. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] In view of the problems existing in the current high-sealing shut-off valve, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide a gate valve with high sealing performance, which solves the problem that "when the valve disc is in contact with the valve seat, there is still a certain gap between the valve disc and the valve seat, and some media will flow out through the gap between the valve disc and the valve seat, thus affecting the sealing effect of the gate valve".

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-sealing shut-off valve, comprising:

[0008] The main unit includes a lower valve body, on which an upper valve body is fixedly mounted. A fixed plate is fixedly mounted on the upper end of the upper valve body, and a knob is rotatably mounted on the fixed plate.

[0009] The working unit includes a flow pipe opened in the lower valve body, an adjusting component is provided in the upper valve body, a preliminary sealing component is provided on the adjusting component, a baffle is fixedly provided in the flow pipe, a fixed seat is fixedly provided on the lower valve body, and a second sealing component is provided on the fixed seat.

[0010] In a preferred embodiment of the high-sealing shut-off valve of this utility model, the adjusting component includes a fixing block fixedly mounted on the upper valve body, a first sliding groove provided on the fixing block, a lifting block slidably mounted on the first sliding groove, a threaded rod fixedly mounted on the knob, and a sealing ring fixedly mounted at the lower end of the lifting block.

[0011] In a preferred embodiment of the high-sealing shut-off valve of this utility model, the lifting block is provided with a threaded groove, and the threaded rod is threadedly connected to the lifting block.

[0012] In a preferred embodiment of the high-sealing shut-off valve of this utility model, the preliminary sealing component includes a working plate fixedly mounted on the sealing ring, a limiting block fixedly mounted on the working plate, a sliding plate slidably mounted on the baffle, a second sliding groove being provided on the sliding plate, a connecting plate fixedly mounted at one end of the sliding plate, and a locking block fixedly mounted on the connecting plate.

[0013] In a preferred embodiment of the high-sealing shut-off valve of this utility model, the second sealing component includes a rotating disk rotatably mounted on the fixed base, a first limiting groove on the rotating disk, a second limiting groove on the fixed base, a retaining plate on the second limiting groove, a limiting rod fixedly mounted on the upper end of the retaining plate, and a connecting pipe rotatably mounted on the rotating disk.

[0014] In a preferred embodiment of the high-sealing shut-off valve of this utility model, a T-shaped block is fixedly provided on the card plate, the second limiting groove is a T-shaped groove, and the T-shaped block is slidably connected to the second limiting groove.

[0015] The beneficial effects of this utility model are:

[0016] 1. When sealing the gate valve is required, turn the knob to drive the lifting block upward through the threaded rod, thereby moving the sealing ring and the working plate to the appropriate position. The working plate drives the sliding plate to move laterally through the limit block, and then the connecting plate and the baffle are sealed by the locking block to achieve a preliminary seal.

[0017] 2. Rotating the rotating disc causes the clamping plate to seal the feed port under the action of the first and second limiting grooves, achieving a secondary seal and increasing the sealing effect. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0019] Figure 1 This is a frontal schematic diagram of the overall structure of a high-sealing shut-off valve proposed in this utility model;

[0020] Figure 2This is a schematic diagram of the cross-sectional structure of the lower valve body;

[0021] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0022] Figure 4 This is a preliminary schematic diagram of the sealing component structure;

[0023] Figure 5 This is a schematic diagram of the second sealing component.

[0024] Figure 6 This is a schematic diagram of the cross-sectional structure of the rotating disk.

[0025] In the diagram: 100, main unit; 101, lower valve body; 102, upper valve body; 103, fixed plate; 104, knob; 200, working unit; 201, flow pipe; 202, adjusting component; 202a, fixed block; 202b, first slide groove; 202c, lifting block; 202d, threaded rod; 202e, sealing ring; 203, preliminary sealing component; 203a, working plate; 203b, limiting block; 203c, sliding plate; 203d, second slide groove; 203e, connecting plate; 203f, locking block; 204, baffle; 205, fixed seat; 206, second sealing component; 206a, rotating plate; 206b, first limiting groove; 206c, second limiting groove; 206d, locking plate; 206e, limiting rod; 206f, connecting pipe. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0029] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0030] Reference Figure 1-6 This utility model provides a high-sealing shut-off valve, comprising:

[0031] The main unit 100 includes a lower valve body 101, an upper valve body 102 fixedly mounted on the lower valve body 101, a fixed plate 103 fixedly mounted on the upper end of the upper valve body 102, and a knob 104 rotatably mounted on the fixed plate 103.

[0032] The working unit 200 includes a flow pipe 201 opened in the lower valve body 101, an adjusting member 202 is provided in the upper valve body 102, a preliminary sealing member 203 is provided on the adjusting member 202, a baffle 204 is fixedly provided in the flow pipe 201, a fixed seat 205 is fixedly provided on the lower valve body 102, and a second sealing member 206 is provided on the fixed seat 205. The device is multi-sealed by the preliminary sealing member 203 and the second sealing member 206.

[0033] The adjusting component 202 includes a fixing block 202a fixedly mounted on the upper valve body 102, a first sliding groove 202b provided on the fixing block 202a, a lifting block 202c slidably mounted on the first sliding groove 202b, a threaded rod 202d fixedly mounted on the knob 104, and a sealing ring 202e fixedly mounted at the lower end of the lifting block 202c.

[0034] Furthermore, the lifting block 202c has a threaded groove, and the threaded rod 202d is threadedly connected to the lifting block 202c.

[0035] Furthermore, the preliminary sealing component 203 includes a working plate 203a fixedly mounted on the sealing ring 202e, a limiting block 203b fixedly mounted on the working plate 203a, a sliding plate 203c slidably mounted on the baffle 204, a second sliding groove 203d opened on the sliding plate 203c, a connecting plate 203e fixedly mounted at one end of the sliding plate 203c, a locking block 203f fixedly mounted on the connecting plate 203e, multiple sets of locking blocks 203f provided on the connecting plate 203e, and a slot for matching the locking block 203f opened on the baffle 204.

[0036] Furthermore, the second sealing component 206 includes a rotating disk 206a rotatably mounted on a fixed base 205, a first limiting groove 206b on the rotating disk 206a, a second limiting groove 206c on the fixed base 205, a retaining plate 206d on the second limiting groove 206c, a limiting rod 206e fixedly mounted on the upper end of the retaining plate 206d, and a connecting pipe 206f rotatably mounted on the rotating disk 206a.

[0037] Furthermore, a T-shaped block is fixedly provided on the card plate 206d, and the second limiting groove 206c is a T-shaped groove, with the T-shaped block and the second limiting groove 206c slidably connected.

[0038] During use, when sealing the shut-off valve is required, turning the knob 104 causes the threaded rod 202d to drive the lifting block 202c upward, thereby moving the sealing ring 202e and the working plate 203a to the appropriate position. The working plate 203a drives the sliding plate 203c to move laterally through the limiting block 203b, thereby sealing the connecting plate 203e with the baffle 204 through the locking block 203f, achieving a preliminary seal. Subsequently, rotating the rotating disk 206a causes the locking plate 206d to seal the feed port under the action of the first limiting groove 206b and the second limiting groove 206c, achieving a secondary seal and increasing the sealing effect.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A high sealing capacity stop valve, characterized by: include: The main unit (100) includes a lower valve body (101), an upper valve body (102) is fixedly mounted on the lower valve body (101), a fixed plate (103) is fixedly mounted on the upper end of the upper valve body (102), and a knob (104) is rotatably mounted on the fixed plate (103). The working unit (200) includes a flow pipe (201) opened in the lower valve body (101), an adjusting member (202) is provided in the upper valve body (102), a preliminary sealing member (203) is provided on the adjusting member (202), a baffle (204) is fixedly provided in the flow pipe (201), a fixed seat (205) is fixedly provided on the lower valve body (101), and a second sealing member (206) is provided on the fixed seat (205).

2. A high sealing capacity stop valve according to claim 1, characterized in that: The adjusting component (202) includes a fixing block (202a) fixedly mounted on the upper valve body (102), a first sliding groove (202b) is provided on the fixing block (202a), a lifting block (202c) is slidably mounted on the first sliding groove (202b), a threaded rod (202d) is fixedly mounted on the knob (104), and a sealing ring (202e) is fixedly mounted at the lower end of the lifting block (202c).

3. A high sealing capacity stop valve according to claim 2, characterized in that: The lifting block (202c) has a threaded groove, and the threaded rod (202d) is threadedly connected to the lifting block (202c).

4. The high sealing stop valve according to claim 2, characterized in that: The preliminary sealing component (203) includes a working plate (203a) fixedly mounted on the sealing ring (202e), a limiting block (203b) fixedly mounted on the working plate (203a), a sliding plate (203c) slidably mounted on the baffle (204), a second sliding groove (203d) opened on the sliding plate (203c), a connecting plate (203e) fixedly mounted at one end of the sliding plate (203c), and a locking block (203f) fixedly mounted on the connecting plate (203e).

5. The high sealing capacity stop valve according to claim 1, wherein: The second sealing component (206) includes a rotating disk (206a) rotatably mounted on the fixed base (205), a first limiting groove (206b) is provided on the rotating disk (206a), a second limiting groove (206c) is provided on the fixed base (205), a retaining plate (206d) is provided on the second limiting groove (206c), a limiting rod (206e) is fixedly provided at the upper end of the retaining plate (206d), and a connecting pipe (206f) is rotatably mounted on the rotating disk (206a).

6. A high sealing capacity stop valve according to claim 5, characterized in that: A T-shaped block is fixedly provided on the card plate (206d), and the second limiting groove (206c) is a T-shaped groove. The T-shaped block is slidably connected to the second limiting groove (206c).

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