Low-platform hard sealing ball valve

Abstract

The utility model discloses a low-platform hard sealing ball valve which comprises a valve body, a base is fixed to the top of the valve body, a lifting sleeve is fixed to the top of the base, a lifting pipe is connected to the top of the lifting sleeve in a sliding mode, a valve rod is arranged in the lifting pipe, an inner supporting pipe is further arranged between the valve rod and the lifting sleeve, and the inner supporting pipe is connected with the lifting sleeve in a sliding mode. The inner supporting pipe and the valve rod are in threaded connection, the side face of the supporting pipe is of a semi-circular structure, and the section of the supporting pipe is of a U-shaped structure. The rotating ring capable of moving up and down to change the height is arranged, when equipment is adjusted, the rotating ring can be pulled to move upwards to be connected with a limiting clamping block of the valve rod, then the valve rod can be rotated, and the height of the supporting pipe can be adjusted. And after adjustment is finished, the rotating ring is loosened, the rotating ring can be pulled by the spring to move downwards to be separated from the limiting clamping block of the valve rod, in this way, the effect of preventing mistaken touch can be achieved, the supporting pipe on the connecting pipe can be conveniently erected on the water pipe when equipment is installed, and installation and connection of the equipment are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a low-platform hard-sealed ball valve. Background Art

[0002] The low-profile hard-seal ball valve is a type of industrial equipment characterized by a metal-to-metal sealing pair. Its structural forms include floating ball and fixed ball types, and its connection forms include flange, welded, and threaded connections. It has high corrosion resistance and is therefore widely used in industries such as petroleum, chemical, metallurgy, and urban centralized heating.

[0003] After searching, Chinese patent document CN202323087395.7 discloses a new hard-sealed ball valve. The cooperation between the sealing component and the reinforcement component prevents the solution from entering the bottom of the ball when the ball valve is opened. When the ball valve is opened and then closed, the solution will remain at the bottom. The residual solution will corrode and damage the bolts connecting the bottom, affecting the sealing effect of the bottom of the ball valve. However, the following problems still exist:

[0004] When the above-mentioned hard-sealed ball valve is used on a low platform, the valve stem controlling the valve is easily touched by mistake, causing the valve to leak. After the valve is adjusted, the turntable that drives the valve stem to rotate cannot be restricted to avoid the valve stem rotating due to external force. Utility Model Content

[0005] The purpose of the present utility model is to provide a low-platform hard-sealed ball valve to solve the problem of the low-platform hard-sealed ball valve proposed in the above-mentioned background technology. When the valve is used on a low platform, the valve stem of the control valve is easily touched by mistake, resulting in valve leakage. After the valve is adjusted, the turntable that drives the valve stem to rotate cannot be restricted to avoid the problem of valve stem rotation due to external force.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: a low-platform hard-sealed ball valve, comprising a valve body, a base fixed to the top of the valve body, a lifting sleeve fixed to the top of the base, a lifting tube slidably connected to the top of the lifting sleeve, a valve stem disposed within the lifting tube, an inner support tube disposed between the valve stem and the lifting sleeve, and a threaded connection between the inner support tube and the valve stem;

[0007] Connecting pipes are provided on both sides of the valve body. The end of the connecting pipe away from the valve body is rotatably connected to a tube. A connecting ring is fixed on the side of the tube close to the connecting pipe. The connecting ring is provided on the side of the connecting pipe and is rotatably connected to the connecting pipe.

[0008] Preferably, the side surface of the hosting is a semicircular ring structure, and the cross-section of the hosting is a "U"-shaped structure.

[0009] Preferably, a baffle with a disc-shaped structure is fixed to the top of the valve stem, and eight groups of limiting blocks are fixed to the bottom of the baffle, and the eight groups of limiting blocks are annularly distributed and fixed on the side of the valve stem.

[0010] Preferably, the height of the lifting tube is greater than the height of the limiting block, and the height of the lifting tube is smaller than the height of the lifting sleeve.

[0011] Preferably, a swivel is fixed to the top of the lifting tube near the baffle, and eight groups of limit slots are provided on the inner side of the swivel at positions corresponding to the eight groups of limit blocks, and the swivel is vertically slidably connected to the limit blocks through the limit slots.

[0012] Preferably, an upper lifting ring with a circular ring structure is fixed to the bottom of the lifting tube near the lifting sleeve, and a lower lifting ring with a ring structure having the same outer dimensions is provided at the bottom of the upper lifting ring. A limiting shaft with a "T"-shaped cross-section is fixed to the top of the lower lifting ring, and the limiting shaft is a circular ring structure, and the limiting shaft is also provided inside the bottom end of the upper lifting ring for sliding and rotating connection.

[0013] Preferably, four groups of sliders are fixed to the side of the lower lifting ring close to the lifting sleeve, and the four groups of sliders are distributed at equal angles on the side of the lower lifting ring. The connection between the lifting sleeve and the four groups of sliders is provided with a sliding groove with the same cross-sectional shape, and the sliding groove and the slider are slidably connected.

[0014] Preferably, eight groups of springs are distributed between the lower lifting ring and the base, and the length of the springs is smaller than the length of the sliding groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] By setting a swivel that can move up and down to change the height, when adjusting the equipment, you can pull the swivel upward to connect with the limit block of the valve stem, and then you can rotate the valve stem. After the adjustment is completed, release the swivel, and the swivel will be pulled downward by the spring and disengage from the limit block of the valve stem, which can prevent accidental touch. The bracket on the connecting pipe can be conveniently placed on the water pipe when the equipment is installed, which facilitates the installation and connection of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 This is a side structural diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the lifting sleeve in the utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the transfer ring of the utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of the lifting sleeve in the utility model;

[0022] Figure 6 This is a schematic diagram of the valve stem structure in the utility model.

[0023] In the figure: 1. Valve body; 2. Connecting pipe; 201. Trustee tube; 202. Connecting ring; 3. Valve stem; 301. Inner support pipe; 302. Limit block; 303. Baffle; 4. Rotating ring; 401. Limit slot; 402. Lifting pipe; 403. Upper lifting ring; 5. Lifting sleeve; 501. Lower lifting ring; 502. Limit shaft; 503. Slider; 504. Slide; 505. Base; 506. Spring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0025] Example 1, please refer to Figure 1-6 The utility model provides a low-platform hard-sealed ball valve, including a valve body 1, a connecting pipe 2, a tube 201, a connecting ring 202, a valve stem 3, an inner support pipe 301, a limit block 302, a baffle 303, a swivel 4, a limit slot 401, a lifting pipe 402, an upper lifting ring 403, a lifting sleeve 5, a lower lifting ring 501, a limit shaft 502, a slider 503, a slide groove 504, a base 505, and a spring 506. The base 505 is fixed to the top of the valve body 1, the lifting sleeve 5 is fixed to the top of the base 505, and the top of the lifting sleeve 5 is slidably connected to the lifting pipe 402.

[0026] Specifically, such as Figure 3 and Figure 5 As shown, an upper lifting ring 403 of a circular structure is fixed to the bottom of the lifting tube 402 near the lifting sleeve 5, and a lower lifting ring 501 of a ring structure with the same outer dimensions is provided at the bottom of the upper lifting ring 403. A limiting shaft 502 with a "T"-shaped cross-section is fixed to the top of the lower lifting ring 501. The limiting shaft 502 is a circular ring structure and is also provided inside the bottom end of the upper lifting ring 403 for sliding and rotating connection. In this way, the lifting tube 402 can maintain connection with the lower lifting ring 501 when rotating. In this way, when the lifting tube 402 stops rotating, it can be driven downward by the lower lifting ring 501, thereby disengaging the top rotating ring 4 from the limiting block 302.

[0027] Four sets of sliders 503 are fixed to the side of the lower lifting ring 501 close to the lifting sleeve 5, and the four sets of sliders 503 are distributed at equal angles on the side of the lower lifting ring 501. The connection between the lifting sleeve 5 and the four sets of sliders 503 is provided with a sliding groove 504 with the same cross-sectional shape, and the sliding groove 504 is slidably connected to the sliders 503. The provided sliders 503 can limit the lower lifting ring 501, facilitate the up and down movement of the lower lifting ring 501, and prevent the lower lifting ring 501 from rotating.

[0028] There are eight groups of springs 506 distributed between the lower lifting ring 501 and the base 505, and the length of the spring 506 is smaller than the length of the slide groove 504. The eight groups of springs 506 can generate pulling force when the lower lifting ring 501 moves upward, pulling the lower lifting ring 501 to move downward, and the baffle drives the top rotating ring 4 to move downward and disengage from the limit block 302.

[0029] Specifically, such as Figure 3 、 Figure 4 and Figure 6 As shown, a valve stem 3 is disposed inside the lifting tube 402. A disc-shaped baffle 303 is fixed to the top of the valve stem 3. Eight sets of position-limiting blocks 302 are fixed to the bottom of the baffle 303. The eight sets of position-limiting blocks 302 are annularly distributed and fixed on the side of the valve stem 3. The eight sets of position-limiting blocks 302 allow the swivel 4 to connect with the valve stem 3, drive the valve stem 3 to rotate, and close the valve body 1.

[0030] The height of the lifting tube 402 is greater than that of the limiting block 302 and smaller than that of the lifting sleeve 5. This limits the range of motion of the lifting tube 402, allowing the swivel 4 to move and separate from the limiting block 302, and preventing the lifting tube 402 from separating from the lifting sleeve 5 after upward movement.

[0031] A swivel 4 is fixed to the top of the lifting tube 402 near the baffle 303. Eight groups of limit slots 401 are opened on the inner side of the swivel 4 at positions corresponding to the eight groups of limit blocks 302. The swivel 4 is vertically slidably connected to the limit blocks 302 through the limit slots 401. The limit slots 401 inside the swivel 4 can be easily connected to the limit blocks 302. When connected, the valve stem 3 can be rotated by the swivel 4 to realize the opening and closing adjustment of the valve body 1.

[0032] An inner support tube 301 is further provided between the valve stem 3 and the lifting sleeve 5 , and the inner support tube 301 is threadedly connected to the valve stem 3 .

[0033] Example 2, specifically, Figure 1 and Figure 2As shown, connecting pipes 2 are provided on both sides of the valve body 1, and a tube holder 201 is rotatably connected to the end of the connecting pipe 2 away from the valve body 1. A connecting ring 202 is fixed to the side of the tube holder 201 close to the connecting pipe 2. The connecting ring 202 is provided on the side of the connecting pipe 2 and is rotatably connected to the connecting pipe 2. The side of the tube holder 201 is a semicircular ring structure, and the cross-section of the tube holder 201 is a "U"-shaped structure. The set tube holder 201 can assist the equipment in connecting to the external water pipe and connect and support it with the water pipe, thereby facilitating the installation and connection of the equipment.

[0034] When the embodiment of the present application is in use: by setting a swivel 4 that can move up and down, when the equipment needs to be adjusted, the swivel 4 can be held and moved upward. At this time, the swivel 4 pulls the lower lifting ring 501 inside the lifting sleeve 5 through the upper lifting ring 403 on the lifting tube 402 at the bottom, allowing the spring 506 to stretch. When the limiting groove 401 of the swivel 4 is combined with the limiting block 302 of the valve stem 3, the rotating swivel 4 can drive the valve stem 3 to rotate, thereby adjusting the valve body 1 on and off. After the adjustment is completed, the rotating swivel 4 is released, and the spring 506 at the bottom will pull the lower lifting ring 501 downward, and then pull the upper lifting ring 403 and the lifting tube 402 through the limiting shaft 502. Finally, the height of the swivel 4 drops and disengages from the limiting block 302. In this way, even if the swivel 4 rotates, it cannot drive the valve stem 3 to rotate, thereby avoiding accidental contact of the device.

[0035] The bracket 201 on the connecting pipe 2 can be used to hang the device on the water pipe when the device is installed and connected, so as to facilitate the connection between the device and the water pipe. In this way, a low-platform hard-sealed ball valve is used. It should be noted that the utility model is a low-platform hard-sealed ball valve. The components are all universal standard parts or components known to technical personnel in this field. Its structure and principle can be known to technical personnel in this field through technical manuals or through conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and adapted monitoring computers and power supplies, are connected through wires. The specific connection means should refer to the above-mentioned working principle. The electrical connection is completed in the working order of each electrical component. The detailed connection means are well-known technologies in this field.

[0036] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A low-platform hard-sealed ball valve, comprising a valve body (1), characterized in that: A base (505) is fixed to the top of the valve body (1), a lifting sleeve (5) is fixed to the top of the base (505), a lifting tube (402) is slidably connected to the top of the lifting sleeve (5), a valve stem (3) is provided inside the lifting tube (402), an inner support tube (301) is further provided between the valve stem (3) and the lifting sleeve (5), and the inner support tube (301) and the valve stem (3) are threadedly connected; Connecting pipes (2) are provided on both sides of the valve body (1); one end of the connecting pipe (2) away from the valve body (1) is rotatably connected to a tube holder (201); a connecting ring (202) is fixed to the side of the tube holder (201) close to the connecting pipe (2); the connecting ring (202) is provided on the side of the connecting pipe (2) and is rotatably connected to the connecting pipe (2).

2. A low platform hard seal ball valve according to claim 1, characterized in that: The side surface of the hosting tube (201) is a semicircular ring structure, and the cross section of the hosting tube (201) is a "U"-shaped structure.

3. The low platform hard seal ball valve according to claim 1, characterized in that: A baffle (303) with a disc-shaped structure is fixed on the top of the valve stem (3), and eight groups of limit blocks (302) are fixed on the bottom of the baffle (303). The eight groups of limit blocks (302) are annularly distributed and fixed on the side of the valve stem (3).

4. The low platform hard seal ball valve according to claim 1, characterized in that: The height dimension of the lifting tube (402) is greater than the height dimension of the limiting block (302), and the height dimension of the lifting tube (402) is smaller than the height dimension of the lifting sleeve (5).

5. The low platform hard seal ball valve according to claim 1, characterized in that: A rotating ring (4) is fixed to the top of the lifting tube (402) near the baffle (303), and eight groups of limiting slots (401) are provided on the inner side of the rotating ring (4) at positions corresponding to the eight groups of limiting blocks (302), and the rotating ring (4) is vertically slidably connected to the limiting blocks (302) via the limiting slots (401).

6. The low platform hard seal ball valve according to claim 1, characterized in that: An upper lifting ring (403) with a circular ring structure is fixed to the bottom of the lifting tube (402) near the lifting sleeve (5), and a lower lifting ring (501) with a ring structure having the same outer dimensions is provided at the bottom of the upper lifting ring (403). A limiting shaft (502) with a "T"-shaped cross-section is fixed to the top of the lower lifting ring (501), and the limiting shaft (502) is a circular ring structure, and is also provided inside the bottom end of the upper lifting ring (403) for sliding and rotating connection.

7. The low platform hard seal ball valve according to claim 6, characterized in that: Four groups of sliders (503) are fixed to the side of the lower lifting ring (501) close to the lifting sleeve (5), and the four groups of sliders (503) are distributed at equal angles on the side of the lower lifting ring (501). A sliding groove (504) with the same cross-sectional shape is provided at the connection between the lifting sleeve (5) and the four groups of sliders (503), and the sliding groove (504) and the sliders (503) are slidably connected.

8. The low platform hard seal ball valve according to claim 6, characterized in that: Eight groups of springs (506) are distributed between the lower lifting ring (501) and the base (505), and the length of the springs (506) is smaller than the length of the sliding groove (504).

Images