Sealing structure for valve body

Abstract

The utility model provides a sealing structure for a valve body, which comprises a valve body and a connecting pipe, the top of the valve body is provided with a hand wheel, the left side and the right side of the valve body are both communicated with valve pipes, the outer sides of the valve pipes are fixedly connected with a fixing disc, the inner side of the connecting pipe is fixedly connected with a connecting disc, and the connecting disc is in contact with the fixing disc. A sealing assembly is arranged at the bottom of the valve body and comprises a transmission box, and the transmission box is arranged at the bottom of the valve body. The output end of the servo motor drives the right-hand and left-hand threaded rod to rotate, the right-hand and left-hand threaded rod drives the threaded sleeve to move towards the inner side through the action of threads, the threaded sleeve drives the sealing ring to move towards the inner side through the connecting rod, and sealing is completed till the sealing ring is tightly attached to the fixing disc and the connecting disc. And the connecting part of the connecting pipe and the valve pipe is sealed, so that the sealing effect is improved, the liquid leakage condition is avoided, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to a sealing structure for a valve body, belonging to the technical field of valve bodies. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters (temperature, pressure and flow) of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc. Valves are control components in fluid conveying systems and have functions such as shut-off, regulation, diversion, prevention of backflow, pressure stabilization, diversion or overflow pressure relief. Valves used in fluid control systems come in a wide variety of varieties and specifications, from the simplest shut-off valves to various valves used in extremely complex automatic control systems.

[0003] However, when the two sides of the existing valve body are connected to the pipeline, flanges are usually used for connection. After long-term use, the connection between the two sides of the valve body and the pipeline may leak, thereby affecting the sealing effect of the valve body and being inconvenient for people to use.

[0004] To this end, a sealing structure for a valve body is proposed. Utility Model Content

[0005] In view of this, the utility model provides a sealing structure for a valve body to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0006] The technical solution of the utility model is achieved as follows: a sealing structure for a valve body, comprising a valve body and a connecting pipe, a hand wheel is arranged on the top of the valve body, the left and right sides of the valve body are connected with valve pipes, the outer side of the valve pipe is fixedly connected with a fixing plate, the inner side of the connecting pipe is fixedly connected with a connecting plate, and the connecting plate is in contact with the fixing plate, a sealing assembly is arranged at the bottom of the valve body, the sealing assembly comprises a transmission box, the transmission box is arranged at the bottom of the valve body, both sides of the inner cavity of the transmission box are movably connected with positive and negative threaded rods through bearings, both sides of the surfaces of the positive and negative threaded rods are threadedly connected with threaded sleeves, a connecting rod is welded to the bottom of the threaded sleeve, and one end of the connecting rod is fixedly connected with a sealing ring.

[0007] Further preferably, a slot is provided on the inner side of the sealing ring, and an insert block is fixedly connected to the outer side of the fixing plate.

[0008] Further preferably, a slide groove is opened at the top of the inner cavity of the transmission box, a slider is welded to the top of the threaded sleeve, and the slider is slidably connected in the slide groove.

[0009] Further preferably, a limiting groove is provided at the bottom of the transmission box, the bottom of the connecting rod passes through the limiting groove and extends to the bottom of the transmission box, and the outer wall of the connecting rod fits with the limiting groove.

[0010] Further preferably, a support frame is welded to the bottom of the valve body, and stabilizing plates are provided on both sides of the top of the transmission box, and the stabilizing plates are threadedly connected to the valve body and the transmission box through fastening screws.

[0011] Further preferably, a servo motor is arranged on the left side of the transmission box, and the output end of the servo motor is fixedly connected to the forward and reverse threaded rods.

[0012] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0013] 1. The utility model drives the positive and negative threaded rods to rotate through the output end of the servo motor, and the positive and negative threaded rods drive the threaded sleeves to move inwards through the action of the threads, and the threaded sleeves drive the sealing rings to move inwards through the connecting rods until the sealing rings are tightly fitted with the fixed disk and the connecting disk to complete the sealing, and the connecting part of the connecting pipe and the valve pipe is sealed, thereby improving the sealing effect, avoiding leakage, and increasing the service life.

[0014] 2. The utility model provides a slot and an insert block, so that when the sealing ring moves inward, the insert block is driven to be inserted into the slot, thereby improving the fixing effect of the sealing ring and the valve tube and avoiding loosening, thereby improving the sealing effect. By providing a sliding groove and a sliding block, the threaded sleeve can be limited to improve its stability during movement. By providing a limiting groove, the connecting rod can be limited to avoid displacement during movement. By providing a stabilizing plate, the fixing effect of the valve body and the transmission box can be improved.

[0015] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0019] Figure 3 This is a schematic diagram of the sealing assembly structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the sealing ring structure of the utility model.

[0021] Figure numerals: 1. valve body; 2. plug block; 3. connecting pipe; 4. connecting plate; 5. sealing assembly; 501. transmission box; 502. threaded sleeve; 503. positive and negative threaded rod; 504. limit groove; 505. servo motor; 506. connecting rod; 507. sealing ring; 508. slider; 509. slide groove; 510. slot; 6. stabilizing plate; 7. support frame; 8. valve pipe; 9. fixed plate; 10. handwheel. DETAILED DESCRIPTION

[0022] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0023] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0024] Example 1

[0025] like Figure 1-4 As shown, an embodiment of the utility model provides a sealing structure for a valve body, including a valve body 1 and a connecting pipe 3, a hand wheel 10 is arranged on the top of the valve body 1, valve pipes 8 are connected to the left and right sides of the valve body 1, a fixing plate 9 is fixedly connected to the outer side of the valve pipe 8, a connecting plate 4 is fixedly connected to the inner side of the connecting pipe 3, and the connecting plate 4 is in contact with the fixing plate 9, a sealing assembly 5 is arranged at the bottom of the valve body 1, and the sealing assembly 5 includes a transmission box 501, the transmission box 501 is arranged at the bottom of the valve body 1, both sides of the inner cavity of the transmission box 501 are movably connected with positive and negative threaded rods 503 through bearings, both sides of the surface of the positive and negative threaded rods 503 are threadedly connected with threaded sleeves 502, a connecting rod 506 is welded to the bottom of the threaded sleeve 502, and a sealing ring 507 is fixedly connected to one end of the connecting rod 506.

[0026] The output end of the servo motor 505 drives the forward and reverse threaded rod 503 to rotate, and the forward and reverse threaded rod 503 drives the threaded sleeve 502 to move inward through the action of the thread, and the threaded sleeve 502 drives the sealing ring 507 to move inward through the connecting rod 506 until the sealing ring 507 is tightly fitted with the fixed disk 9 and the connecting disk 4 to complete the sealing, and the connecting part of the connecting pipe 3 and the valve pipe 8 is sealed, thereby improving the sealing effect, avoiding leakage, and increasing the service life.

[0027] Example 2

[0028] In one embodiment, a slot 510 is provided on the inner side of the sealing ring 507, an insert block 2 is fixedly connected to the outer side of the fixed disk 9, a slide groove 509 is provided on the top of the inner cavity of the transmission box 501, a slider 508 is welded on the top of the threaded sleeve 502, and the slider 508 is slidably connected in the slide groove 509, a limiting groove 504 is provided on the bottom of the transmission box 501, the bottom of the connecting rod 506 passes through the limiting groove 504 and extends to the bottom of the transmission box 501, and the outer wall of the connecting rod 506 fits with the limiting groove 504, a support frame 7 is welded to the bottom of the valve body 1, and stabilizing plates 6 are provided on both sides of the top of the transmission box 501, and the stabilizing plates 6 are threadedly connected to the valve body 1 and the transmission box 501 through fastening screws, and a servo motor 505 is provided on the left side of the transmission box 501, and the output end of the servo motor 505 is fixedly connected to the forward and reverse threaded rods 503.

[0029] By setting the slot 510 and the plug block 2, the sealing ring 507 can be moved inward to drive the plug block 2 to be inserted into the slot 510, thereby improving the fixing effect of the sealing ring 507 and the valve tube 8 and avoiding loosening, thereby improving the sealing effect. By setting the slide groove 509 and the slider 508, the threaded sleeve 502 can be limited to improve its stability during movement. By setting the limiting groove 504, the connecting rod 506 can be limited to avoid displacement during movement. By setting the stabilizing plate 6, the fixing effect of the valve body 1 and the transmission box 501 can be improved.

[0030] When the utility model is working: first, when sealing is required, the connecting pipe 3 is connected to the valve pipe 8, at this time, the connecting disk 4 is in contact with the valve pipe 8, and then the servo motor 505 is started, and the positive and negative threaded rods 503 are driven to rotate through the output end of the servo motor 505, and the positive and negative threaded rods 503 drive the threaded sleeve 502 to move inwardly through the action of the thread, and the threaded sleeve 502 drives the sealing ring 507 to move inwardly through the connecting rod 506 until the sealing ring 507 is tightly fitted with the fixed disk 9 and the connecting disk 4 to complete the sealing, and the connecting part of the connecting pipe 3 and the valve pipe 8 is sealed, which improves the sealing effect, avoids leakage, and increases the service life. At the same time, when the sealing ring 507 moves inward, it drives the plug block 2 to be inserted into the slot 510, thereby improving the fixing effect of the sealing ring 507 and the valve pipe 8, avoiding loosening, and then improving the sealing effect.

[0031] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A sealing structure for a valve body, characterized in that: The invention comprises a valve body (1) and a connecting pipe (3), wherein a hand wheel (10) is arranged on the top of the valve body (1), the left and right sides of the valve body (1) are both connected to valve pipes (8), the outer side of the valve pipe (8) is fixedly connected to a fixing plate (9), the inner side of the connecting pipe (3) is fixedly connected to a connecting plate (4), and the connecting plate (4) is in contact with the fixing plate (9), and the bottom of the valve body (1) is provided with a sealing assembly (5), wherein the sealing assembly (5) comprises a transmission box (501), wherein the transmission box (501) is arranged at the bottom of the valve body (1), and both sides of the inner cavity of the transmission box (501) are movably connected to positive and negative threaded rods (503) through bearings, and both sides of the surface of the positive and negative threaded rods (503) are threadedly connected to threaded sleeves (502), and a connecting rod (506) is welded to the bottom of the threaded sleeve (502), and one end of the connecting rod (506) is fixedly connected to a sealing ring (507).

2. A valve body sealing structure according to claim 1, characterized in that: A slot (510) is provided on the inner side of the sealing ring (507), and an insert block (2) is fixedly connected to the outer side of the fixing plate (9).

3. A valve body sealing structure according to claim 1, characterized in that: A slide groove (509) is provided at the top of the inner cavity of the transmission box (501), a slider (508) is welded to the top of the threaded sleeve (502), and the slider (508) is slidably connected in the slide groove (509).

4. A valve body sealing structure according to claim 1, characterized in that: The bottom of the transmission box (501) is provided with a limiting groove (504), the bottom of the connecting rod (506) passes through the limiting groove (504) and extends to the bottom of the transmission box (501), and the outer wall of the connecting rod (506) fits the limiting groove (504).

5. A valve body sealing structure according to claim 1, characterized in that: A support frame (7) is welded to the bottom of the valve body (1), and stabilizing plates (6) are provided on both sides of the top of the transmission box (501), and the stabilizing plates (6) are threadedly connected to the valve body (1) and the transmission box (501) through fastening screws.

6. A valve body sealing structure according to claim 1, characterized in that: A servo motor (505) is arranged on the left side of the transmission box (501), and the output end of the servo motor (505) is fixedly connected to the forward and reverse threaded rod (503).

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