High-temperature and high-pressure welding gate valve

Abstract

The utility model discloses a high-temperature and high-pressure welding gate valve, and relates to the technical field of valves. The check valve comprises a valve body, a first valve pipe is welded to the upper end face of the center of the valve body, a hand wheel assembly is arranged above the first valve pipe and comprises a rotating ball rotationally arranged in the upper side wall of the first valve pipe, the upper side wall of the rotating ball is connected with a hand wheel body through a connecting column, and a positioning assembly is further installed on the hand wheel body. The positioning assembly comprises a positioning rod penetrating through the hand wheel body and the first valve pipe, the positioning rod is further sleeved with a spring, the connecting column is further provided with a display assembly, and the display assembly comprises an index piece fixed to the connecting column and a dial fixed to the upper side wall of the first valve pipe. And the index piece comprises a tightening sleeve fixed on the connecting column and an index head rotationally arranged in the dial. Through the hand wheel assembly and the positioning assembly, the effect that the valve clack is positioned in the valve body at a certain inclination angle is achieved, and the inclination angle of the valve clack in the valve body can be visually seen through the display assembly.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, and in particular relates to a high-temperature and high-pressure welded gate valve. Background Technology

[0002] Welded gate valves are the most common type of forced-sealing valve. They mainly consist of six parts: valve body, valve cover, valve stem, handwheel, and valve disc. The two ends of the valve stem are connected to the handwheel and the valve disc, respectively. The valve disc is located inside the valve body, and the valve cover is placed on top of the valve body. The valve stem also passes through the valve cover. The handwheel is mounted on the upper side wall of the valve cover. Rotating the handwheel drives the valve stem to rotate the valve disc within the valve body. When the valve disc is parallel to the valve body passage, the flow rate of the welded gate valve is at its maximum. When the valve disc is perpendicular to the valve body passage, the welded gate valve closes. High-temperature and high-pressure welded gate valves, due to their metal material and superior sealing performance, possess excellent high-temperature and high-pressure resistance.

[0003] Chinese patent application CN219176982U discloses a high-temperature and high-pressure welded gate valve, including a valve body with connecting flanges on both sides and a connecting pipe on the top of the valve body. A valve stem is rotatably connected to the top of the connecting pipe, and an annular groove is provided in the middle of the connecting pipe. A limiting ring is provided in the middle of the valve stem and is rotatably connected to the annular groove. A handle is fixedly installed at the top of the valve stem, and a valve disc is fixedly installed at the bottom of the valve stem. Installation grooves are opened at both ends of the inner wall of the gate valve, and a buffer pipe is threadedly connected in the installation groove. An annular buffer block is provided at one end of the buffer pipe, and a sealing gasket is provided on the outer side of the annular buffer block. This utility model provides a high-temperature and high-pressure welded gate valve that uses the annular buffer block to buffer the water flow, reduce the kinetic energy of the water flow, reduce the impact force of the water flow on the valve disc, and facilitate the rotation of the valve disc in the valve body. The sealing gasket prevents water from entering the connection between the buffer pipe and the inner wall of the valve body. During maintenance, the buffer pipe can be unscrewed from the installation groove for replacement, which is convenient for maintenance.

[0004] The aforementioned high-temperature, high-pressure welded gate valve has a valve disc housed within the valve body, with a valve stem inserted into the valve body at the upper end of the disc. Rotating the handle drives the valve stem to rotate the valve disc, thus opening and closing the welded gate valve. While rotating the handwheel causes the valve disc to rotate as well, the tilt angle of the valve disc within the valve body channel cannot be observed. This tilt angle directly affects the flow rate and velocity through the welded gate valve, making it impossible to determine the flow rate and velocity. Furthermore, while rotating the handle drives the valve stem to rotate the valve disc, opening and closing the valve, when the valve is open, the fluid within the valve body impacts the valve disc. If the valve disc is tilted, the impact causes it to shift towards a position parallel to the valve body channel, making flow rate adjustment difficult. Therefore, we provide a high-temperature, high-pressure welded gate valve to address these problems. Utility Model Content

[0005] The purpose of this utility model is to provide a high-temperature and high-pressure welded gate valve. Through the cooperation of the handwheel assembly and the positioning assembly, the valve disc can be positioned in the valve body at a specific tilt angle. The tilt angle of the valve disc in the valve body can be seen intuitively through the display assembly, thus solving the problems of the aforementioned high-temperature and high-pressure welded gate valve.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a high-temperature and high-pressure welded gate valve, comprising a valve body, a valve stem mounted on the valve body, and a valve disc mounted on one end of the valve stem within the valve body; a valve tube is welded to the upper surface of the center of the valve body, and a handwheel assembly is disposed above the valve tube; the handwheel assembly includes a rotating ball rotatably disposed in the upper side wall of the valve tube, and the upper side wall of the rotating ball is connected to the handwheel body via a connecting post; a positioning assembly is also mounted on the handwheel body, the positioning assembly including a positioning rod inserted through the handwheel body and the valve tube, and a spring is sleeved on the positioning rod; a display assembly is also mounted on the connecting post, the display assembly including an index component fixed on the connecting post and a scale fixed in the upper side wall of the valve tube; the index component includes a clamping sleeve fixed on the connecting post and an index head rotatably disposed within the scale.

[0008] The present invention is further configured such that a second valve tube is welded to the upper side wall of the first valve tube, the first valve tube, the second valve tube and the valve body are designed as an integral structure, and the valve stem is set at the axis of the first valve tube and the second valve tube.

[0009] The present invention is further configured such that a threaded sleeve is welded to the bottom side wall of the handwheel body, and the threaded sleeve is threadedly connected to the upper side wall of the connecting column, and a rotating ball is fixedly connected to the lower side wall of the connecting column.

[0010] The present invention is further configured such that a rotating groove is provided on the upper side wall of the valve pipe, and a positioning hole is provided on the bottom inner wall of the rotating groove; a top groove is provided on the upper side wall of the handwheel body, and a positioning hole is provided on the bottom inner wall of the top groove; and the rotating ball is slidably connected to the rotating groove.

[0011] The present invention is further configured such that the positioning hole one and the positioning hole two are arranged vertically correspondingly, the upper part of the positioning rod is inserted into the positioning hole two and the lower end is inserted into the positioning hole one, a pull ring is welded to the upper side wall of the positioning rod, one end of the spring is connected to the pull ring and the other end is connected to the top groove.

[0012] The present invention is further configured such that an installation groove is provided at the outer edge of the upper end face of the valve tube, the installation groove is fixedly connected to the installation plate by bolts, and the installation plate is welded to the inner wall of the dial.

[0013] The present invention is further configured such that the dial is arranged in a ring shape, the upper side wall of the dial is provided with an annular groove, and a scale is also embedded in the annular groove, and the annular groove is slidably connected to the indicator head.

[0014] The present invention is further configured such that the indicator head and the clamping sleeve are connected by a connecting rod, the clamping sleeve is locked to the outer wall of the connecting column by a stud and a nut, the indicator head is in the shape of a smooth arrow, and the arrow of the indicator head is set to point to one side of the scale.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model, by setting a handwheel assembly and a positioning assembly, has a top groove on the handwheel body of the handwheel assembly, and two annular positioning holes in the top groove. A positioning hole is also set on the upper side wall of the valve tube directly below the positioning hole two. That is, the positioning hole one and the positioning hole two are set vertically and vertically. When the handwheel body is manually rotated, the valve stem can be driven to rotate in the valve tube one and valve tube two through the screw sleeve on the handwheel body, thereby achieving the effect of rotating the valve disc, that is, achieving the opening and closing effect of the high temperature and high pressure welded gate valve. When opening, first hold the pull ring and pull it upward, which will stretch the spring and pull the positioning rod out of the positioning hole one, so that the positioning rod is separated from the valve tube one. At this time, the handwheel body can be rotated, and the valve disc will be rotated through the linkage of the valve stem. Then, after adjusting the inclination angle of the valve disc and the valve body channel, the pull ring is released. At this time, the spring loses its restraint force, moves the positioning rod down, and inserts it into the corresponding positioning hole one, thereby achieving the effect of limiting the handwheel body to prevent its rotation.

[0017] 2. This utility model includes a display component comprising an indicator fixed to a connecting column in the handwheel assembly and a scale fixed to the outer wall of the top end of the valve tube. When the handwheel body is manually rotated, the connecting column below it also rotates in the rotation groove on the valve tube. The indicator includes a clamping sleeve fixed to the connecting column and an indicator head slidably disposed on the scale. The indicator head and the clamping sleeve are connected by a connecting rod. Thus, when the connecting column rotates with the handwheel body, the indicator head also rotates in the annular groove of the scale under the linkage of the connecting rod and the clamping sleeve. The indicator head corresponds to different scales in the annular groove, which reflect the tilt angle of the valve disc within the valve body.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying 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.

[0020] Figure 1 This is a schematic diagram of the structure of a high-temperature and high-pressure welded gate valve.

[0021] Figure 2 A structural cross-sectional view of a high-temperature and high-pressure welded gate valve. Figure 1 .

[0022] Figure 3 A structural cross-sectional view of a high-temperature and high-pressure welded gate valve. Figure 2 .

[0023] Figure 4 This is a structural disassembly diagram of a high-temperature and high-pressure welded gate valve.

[0024] Figure 5 This is a structural disassembly diagram of the handwheel assembly and the positioning assembly.

[0025] Figure 6 This is a schematic diagram of the handwheel body.

[0026] Figure 7 This is a structural disassembly diagram of the display component.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1-Valve body, 101-Valve pipe one, 101a-Rotating groove, 101b-Mounting groove, 101c-Positioning hole one, 102-Valve pipe two, 2-Handwheel assembly, 201-Handwheel body, 201a-Threaded sleeve, 201b-Connecting sleeve, 201c-Top groove, 201d-Positioning hole two, 202-Connecting column, 203-Rotating ball, 3-Valve stem, 4-Valve disc, 5-Positioning assembly, 501-Positioning rod, 502-Pull ring, 503-Spring, 6-Display assembly, 601-Digital dial, 601a-Mounting plate, 601b-Annular groove, 601c-Scale, 602-Indicator component, 602a-Clamping sleeve, 602b-Connecting rod, 602c-Indicator head. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1, please refer to Figure 1-6 This utility model is a high temperature and high pressure welded gate valve, including a valve body 1, a valve stem 3, a valve disc 4, a handwheel assembly 2 and a positioning assembly 5. Through the cooperation of the handwheel assembly 2 and the positioning assembly 5, the valve disc 4 is positioned in the valve body 1 at a certain tilt angle.

[0031] Specifically, a valve tube 101 is provided on the upper surface of the center of the valve body 1, and a valve tube 2 102 is provided on the upper surface of the valve tube 101. The valve body 1, valve tube 101 and valve tube 2 102 are all integrally designed. A valve stem 3 is provided inside the valve tube 101 and valve tube 2 102. A valve disc 4 is installed at one end of the valve stem 3 inside the valve body 1, and the other end is connected to the handwheel assembly 2. The handwheel assembly 2 includes a threaded sleeve 201a that is threaded to the valve stem 3. The threaded sleeve 201a is welded to the center of the handwheel body 201. A connecting post 202 is welded to the bottom side wall of the handwheel body 201, and a rotating ball 203 is fixedly provided on the bottom side wall of the connecting post 202. A positioning hole 201d is also provided on the handwheel body 201. The positioning assembly 5 includes a positioning rod 501 inserted in the positioning hole 201d and a spring 503 sleeved on the outer wall of the positioning rod 501.

[0032] Furthermore, a rotating groove 101a is provided on the upper side wall of valve pipe 101, and a positioning hole 101c is provided on the bottom side wall of the rotating groove 101a. A top groove 201c is provided on the upper side wall of handwheel body 201, and a positioning hole 201d is provided on the bottom side wall of the top groove 201c. Positioning hole 101c and positioning hole 201d are arranged vertically and vertically. A connecting sleeve 201b is welded to the bottom of handwheel body 201, and the connecting sleeve 201b is threadedly connected to the connecting post 202. The connecting post 202 is connected to the rotating groove 101a through a rotating ball 203. A pull ring 502 is welded to the upper end face of positioning rod 501. One end of spring 503 is connected to pull ring 502, and the other end is connected to top groove 201c. Positioning rod 501 is inserted into positioning hole 201d and positioning hole 101c.

[0033] The operation process of this embodiment is as follows: When in use, hold the pull ring 502 and pull it upward to lengthen the spring 503 and pull the positioning rod 501 out of the positioning hole 101c, so that the positioning rod 501 is separated from the valve tube 101. At this time, the handwheel body 201 can be rotated, and the valve disc 4 will be rotated through the linkage of the valve rod 3. After adjusting the tilt angle between the valve disc 4 and the valve body 1, the pull ring 502 is released. At this time, the spring 503 loses its restraint and moves the positioning rod 501 down and inserts it into the corresponding positioning hole 101c, thus achieving the effect of positioning the handwheel body 201. After the handwheel body 201 is fixed, the valve rod 3 and valve disc 4 connected to it are also fixed and will not rotate due to the impact of the fluid in the valve body 1.

[0034] Example 2, please refer to Figure 7 Based on embodiment 1, a display component 6 is also provided, which can intuitively reflect the tilt angle between the valve disc 4 and the inner channel of the valve body 1.

[0035] Specifically, the display component 6 includes an indicator 602 fixed on the connecting post 202 and a dial 601 fixed on the valve tube 101. The indicator 602 includes a clamping sleeve 602a fixed on the connecting post 202 and an indicator head 602c slidably disposed in the dial 601.

[0036] Furthermore, a mounting groove 101b is provided on the outer edge sidewall of valve pipe 101. The mounting groove 101b is fixedly connected to the mounting plate 601a by bolts. The mounting plate 601a is welded to the inner wall of the dial 601. An annular groove 601b is provided on the upper end face of the dial 601, and a scale 601c is also provided on the annular groove 601b. The index head 602c is connected to the clamping sleeve 602a by a connecting rod 602b.

[0037] The operation process of this embodiment is as follows: When the handwheel body 201 is manually rotated during use, the connecting column 202 below it also rotates in the rotating groove 101a on the valve tube 101. Since the clamping sleeve 602a is fixed on the connecting column 202, the index head 602c will also rotate in the annular groove 601b of the scale 601 under the connection of the connecting rod 602b and the clamping sleeve 602a. The index head 602c corresponds to different scales in the annular groove 601b, and the scale on the scale reflects the angle between the valve disc 4 and the channel of the valve body 1.

[0038] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high temperature and high pressure welding gate valve, comprising a valve body (1), a valve stem (3) is installed on the valve body (1), and a valve disc (4) is installed at one end of the valve stem (3) in the valve body (1); characterized in that: The upper end face of the valve body (1) is welded with a valve pipe one (101), and the upper side of the valve pipe one (101) is provided with a hand wheel assembly (2), the hand wheel assembly (2) comprises a rotating ball (203) rotatably arranged in the upper side wall of the valve pipe one (101), and the upper side wall of the rotating ball (203) is connected with the hand wheel body (201) through a connecting column (202), the hand wheel body (201) is further provided with a positioning assembly (5), the positioning assembly (5) comprises a positioning rod (501) penetrating through the hand wheel body (201) and the valve pipe one (101), and the positioning rod (501) is further sleeved with a spring (503), the connecting column (202) is further provided with a display assembly (6), the display assembly (6) comprises an index element (602) fixed on the connecting column (202) and a scale disc (601) fixed in the upper side wall of the valve pipe one (101), and the index element (602) comprises a clamping sleeve (602a) fixed on the connecting column (202) and an index head (602c) rotatably arranged in the scale disc (601).

2. A high temperature high pressure welding gate valve according to claim 1, characterized in that, The upper side wall of the valve pipe one (101) is welded with a valve pipe two (102), and the valve pipe one (101), the valve pipe two (102) and the valve body (1) are designed in an integrated structure, and the valve rod (3) is arranged at the center of the valve pipe one (101) and the valve pipe two (102).

3. A high temperature high pressure welding gate valve according to claim 1, characterized in that, The bottom side wall of the hand wheel body (201) is welded with a screw sleeve (201a), the screw sleeve (201a) is threadedly connected with the upper side wall of the connecting column (202), and the lower side wall of the connecting column (202) is fixedly connected with the rotating ball (203).

4. A high temperature high pressure welding gate valve according to claim 1, characterized in that, The upper side wall of the valve pipe one (101) is provided with a rotating groove (101a), and the bottom side inner wall of the rotating groove (101a) is provided with a positioning hole one (101c), the upper side wall of the hand wheel body (201) is provided with a top groove (201c), and the bottom side inner wall of the top groove (201c) is provided with a positioning hole two (201d), and the rotating ball (203) is slidably connected with the rotating groove (101a).

5. A high temperature, high pressure welding gate valve according to claim 4, wherein, The positioning hole one (101c) and the positioning hole two (201d) are arranged in a one-up-and-one-down correspondence, the upper part of the positioning rod (501) penetrates through the positioning hole two (201d), and the lower end penetrates through the positioning hole one (101c), the upper side wall of the positioning rod (501) is welded with a pull ring (502), one end of the spring (503) is connected with the pull ring (502), and the other end is connected with the top groove (201c).

6. A high temperature, high pressure welding gate valve as defined in claim 1, wherein, The outer edge of the upper end face of the valve pipe one (101) is provided with a mounting groove (101b), the mounting groove (101b) is fixedly connected with a mounting plate (601a) through bolts, and the mounting plate (601a) is welded on the inner wall of the scale disc (601).

7. A high temperature high pressure welding gate valve according to claim 1, characterized in that, The scale disc (601) is arranged in a circular ring shape, the upper side wall of the scale disc (601) is provided with an annular groove (601b), and the annular groove (601b) is further inlaid with a scale table (601c), and the annular groove (601b) is slidably connected with the index head (602c).

8. A high temperature high pressure welding gate valve according to claim 1, characterized in that, The index head (602c) is connected with the tight sleeve (602a) through the connecting rod (602b), the tight sleeve (602a) is locked on the outer wall of the connecting column (202) through the stud and the nut, the index head (602c) is in the smooth arrowhead shape, and the arrowhead position of the index head (602c) is arranged on one side of the scale table (601c).

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