Switch valve with hard sealing structure

Abstract

The utility model discloses a hard sealing structure switch valve which comprises a valve body, a valve rod is arranged on the valve body in a rotating mode, a valve element corresponding to the valve body is arranged at the bottom end of the valve rod, a driving motor is connected to the upper end of the valve rod, a plurality of supporting rods are connected between the driving motor and the valve body, and the supporting rods are arranged on the valve body. A connecting mechanism is detachably arranged on the right side of the valve body and comprises a first connecting pipe, an extension pipe and a second connecting pipe, the first connecting pipe and the valve body are detachably arranged, the extension pipe is slidably mounted at the inner side end of the first connecting pipe, and the second connecting pipe is slidably mounted at the outer side end of the extension pipe. Fixing flanges are arranged on the left side and the right side of the outer end face of the valve body correspondingly, connecting flanges are arranged on the first connecting pipe and the second connecting pipe correspondingly, the fixing flanges and the connecting flanges are connected through bolts, through the design of a connecting mechanism, installation and adjustment can be conveniently conducted corresponding to different external positions, and practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of switch valves, and more particularly to a switch valve with a hard sealing structure. Background Art

[0002] A switch valve is a common valve that can realize the opening and closing regulation of a pipeline. The so-called hard-sealed switch valve, that is, the valve core and the valve body are made of metal, and the metal and the metal are sealed together. When the existing hard-sealed switch valve is used, the overall length of the device is not convenient to adjust for different external usage environments, and its practicality needs to be improved. Moreover, when the device is in use, the length adjustment is relatively troublesome, and there is a lack of a suitable quick-adjustment locking mechanism. In addition, when the device is in use, the pipeline is in an open state, the valve core is impacted and affects the flow rate, and there is a lack of a suitable reinforced locking mechanism. Utility Model Content

[0003] (1) Technical problems solved

[0004] In response to the problems existing in the prior art, the utility model provides a hard-sealed structure switch valve to solve the technical problems mentioned in the background technology that the overall length of the device is inconvenient to adjust for different external usage environments and its practicality needs to be improved.

[0005] (2) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hard-sealed structure switch valve, comprising a valve body, a valve stem rotatably provided on the valve body, a valve core provided at the bottom end of the valve stem corresponding to the valve body, a driving motor connected to the upper end of the valve stem, a support rod connected between the driving motor and the valve body, a plurality of support rods are provided, a connecting mechanism is detachably provided on the right side of the valve body, the connecting mechanism comprises a first connecting pipe, an extension pipe and a second connecting pipe, the first connecting pipe and the valve body are detachably provided, the extension pipe is slidably installed on the inner end of the first connecting pipe, the second connecting pipe is slidably installed on the outer end of the extension pipe, fixing flanges are provided on the left and right sides of the outer end surface of the valve body, the first connecting pipe and the second connecting pipe are provided with connecting flanges, and the fixing flange and the connecting flange are connected by bolts.

[0007] The utility model is further configured such that sliding sealing bearings are provided on both sides of the outer end surface of the extension tube corresponding to the first connecting tube and the second connecting tube to ensure sealing of the connection.

[0008] The utility model is further configured such that the front and rear end surfaces of the extension tube are connected with adjustment plates, the front and rear ends of the first connecting tube are provided with first adjustment seats corresponding to the adjustment plates, and the front and rear ends of the second connecting tube are provided with second adjustment seats corresponding to the adjustment plates, so as to facilitate length adjustment and locking.

[0009] The utility model is further configured such that a first threaded hole is provided on each of the two first adjustment seats, a second threaded hole is provided on each of the two adjustment plates corresponding to the first threaded hole, a plurality of second threaded holes are arranged at intervals, and the first threaded hole and the second threaded hole are connected by bolts to achieve locking of the position of the first connecting pipe.

[0010] The utility model is further configured such that locking holes are provided on both of the second adjustment seats, locking rods are provided inside the two locking holes, the locking rods and the locking holes are threadedly connected, and locking grooves are provided on both of the adjustment plates corresponding to the locking rods to achieve locking of the position of the second connecting pipe.

[0011] The utility model is further configured such that a limit plate is provided on the front end face of the valve body, a limit rod is passed through the limit plate, a limit seat is provided on the outer end face of the valve stem corresponding to the limit rod, a limit hole is provided on the outer end face of the limit seat corresponding to the limit rod, and a plurality of limit holes are provided in the circumferential direction of the limit holes, which are convenient for locking after opening and closing adjustment.

[0012] The utility model is further configured such that a limiting ring is provided at the front end of the limiting rod, and a spring is provided between the limiting ring and the limiting plate to facilitate automatic resetting.

[0013] (3) Beneficial effects

[0014] Compared with the prior art, the present invention provides a hard seal structure switch valve with the following features:

[0015] Beneficial effects:

[0016] 1. Through the design of the connecting mechanism, the extension tube of the connecting mechanism is slidably arranged relative to the first connecting tube, and the second connecting tube is slidably arranged relative to the extension tube, which facilitates the adjustment of the overall length of the device and facilitates installation and adjustment corresponding to different external positions, thereby improving practicality.

[0017] 2. Through the design of the adjustment plate, the first threaded hole on the first adjustment seat and the second threaded hole on the adjustment plate are bolted together and locked, which facilitates the locking after sliding adjustment between the first connecting pipe and the extension pipe, and facilitates coarse length adjustment. The locking rod is installed corresponding to the locking hole of the second adjustment seat, and the threads match. The locking rod and the locking groove match to facilitate fine length adjustment.

[0018] 3. Through the design of the limit rod and the limit seat, the limit rod is set through the limit plate, and the limit hole of the limit rod and the limit seat cooperate to limit the position after rotation, improve the stability after opening and closing adjustment, and ensure the flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the preferred overall structure of a hard seal structure switch valve;

[0020] Figure 2 A cross-sectional view of the internal structure of a valve body preferably used for a hard-seal switch valve;

[0021] Figure 3 This is a schematic diagram of a preferred first connecting pipe structure of a hard seal structure switch valve;

[0022] Figure 4 This is a schematic diagram of an extension pipe structure preferably used for a hard seal structure switch valve;

[0023] Figure 5 This is a schematic diagram of a preferred second connecting pipe structure for a hard-sealed switch valve.

[0024] In the figure: 1. Valve body; 2. Valve stem; 3. Valve core; 4. Drive motor; 5. Support rod; 6. First connecting pipe; 7. Extension pipe; 8. Second connecting pipe; 9. Fixed flange; 10. Connecting flange; 11. Sliding sealing bearing; 12. Adjustment plate; 13. First adjustment seat; 14. Second adjustment seat; 15. First threaded hole; 16. Second threaded hole; 17. Locking hole; 18. Locking rod; 19. Locking groove; 20. Limit plate; 21. Limit rod; 22. Limit seat; 23. Limit hole; 24. Limit ring; 25. Spring. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0027] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0028] See also Figure 1-Figure 5, a hard-seal structure switch valve, including a valve body 1, a valve stem 2 is rotatably provided on the valve body 1, a valve core 3 is provided at the bottom end of the valve stem 2 corresponding to the valve body 1, a driving motor 4 is connected to the upper end of the valve stem 2, a support rod 5 is connected between the driving motor 4 and the valve body 1, and multiple support rods 5 are provided. A connecting mechanism is detachably provided on the right side of the valve body 1, and the connecting mechanism includes a first connecting pipe 6, an extension pipe 7 and a second connecting pipe 8. The first connecting pipe 6 and the valve body 1 are detachably arranged, the extension pipe 7 is slidably installed on the inner end of the first connecting pipe 6, and the second connecting pipe 8 is slidably installed on the outer end of the extension pipe 7. Fixed flanges 9 are provided on both sides of the outer end surface of the valve body 1, and connecting flanges 10 are provided on the first connecting pipe 6 and the second connecting pipe 8. The fixed flange 9 and the connecting flange 10 are connected by bolts.

[0029] In this embodiment, the driving motor 4 is started, the driving motor 4 drives the valve stem 2 to rotate, and the valve stem 2 drives the internal valve core 3 to rotate and adjust, thereby realizing opening and closing adjustment.

[0030] More specifically, before the overall installation, the length is adjusted, the extension tube 7 is slid and adjusted to a suitable position relative to the first connecting tube 6, the second connecting tube 8 is slid and adjusted to a suitable position relative to the extension tube 7, and the fixing flange 9 and the connecting flange 10 are fastened and connected by bolts.

[0031] See also Figure 4 As an implementation of the extension tube 7 , sliding sealing bearings 11 are provided on both sides of the outer end surface of the extension tube 7 corresponding to the first connecting tube 6 and the second connecting tube 8 .

[0032] Specifically, when the extension tube 7 is slidably adjusted relative to the first connecting tube 6 and the second connecting tube 8 , the sliding sealing bearing 11 provides sealing protection for the fitting portions.

[0033] See also Figure 1 、 Figure 3 、 Figure 4 and Figure 5 As an implementation method for length adjustment: the front and rear end surfaces of the extension tube 7 are connected with an adjustment plate 12, the front and rear ends of the first connecting tube 6 are provided with a first adjustment seat 13 corresponding to the adjustment plate 12, and the front and rear ends of the second connecting tube 8 are provided with a second adjustment seat 14 corresponding to the adjustment plate 12, and a first threaded hole 15 is opened on the two first adjustment seats 13, and a second threaded hole 16 is opened on the two adjustment plates 12 corresponding to the first threaded hole 15. A plurality of second threaded holes 16 are arranged at intervals, and the first threaded hole 15 and the second threaded hole 16 are connected by bolts. A locking hole 17 is opened on the two second adjustment seats 14, and a locking rod 18 is provided inside the two locking holes 17. The locking rod 18 is threadedly connected to the locking hole 17, and a locking groove 19 is opened on the two adjustment plates 12 corresponding to the locking rod 18.

[0034] Specifically, the adjustment plate 12 on the extension plate is slidably adjusted relative to the first adjustment seat 13 and the second adjustment seat 14, the adjustment plate 12 slides to a suitable position relative to the first adjustment seat 13, the first threaded hole 15 on the first adjustment seat 13 and the second threaded hole 16 on the adjustment plate 12 are aligned, the bolts are passed through and tightened, the adjustment plate 12 slides to a suitable position relative to the second adjustment seat 14, the locking rod 18 and the locking hole 17 are threadedly matched, the locking rod 18 is inserted into the locking groove 19 on the adjustment plate 12, and the second connecting pipe 8 is adjusted to achieve locking.

[0035] See also Figure 1 and Figure 2 As an implementation method of the valve stem 2: a limit plate 20 is provided on the front end face of the valve body 1, a limit rod 21 is penetrated by the limit plate 20, a limit seat 22 is provided on the outer end face of the valve stem 2 corresponding to the limit rod 21, a limit hole 23 is provided on the outer end face of the limit seat 22 corresponding to the limit rod 21, and a plurality of limit holes 23 are provided in the circumferential direction, a limit ring 24 is provided at the front end of the limit rod 21, and a spring 25 is connected between the limit ring 24 and the limit plate 20.

[0036] Specifically, before opening and closing adjustment, grasp the limit ring 24, pull the limit rod 21 outward relative to the limit plate 20, stretch the spring 25, open and adjust to the appropriate position, loosen the limit ring 24, retract the spring 25, reset the limit plate 20 and insert it into the appropriate limit hole 23 to achieve limit pressure on the opening and closing state.

[0037] In summary, the overall equipment is in use:

[0038] When in the length adjustment state, the length of the connecting mechanism is adjusted according to the needs of use, and the first connecting tube 6, the extension tube 7 and the second connecting tube 8 are slid and adjusted to the appropriate position. The first threaded hole 15 on the first adjustment seat 13 and the appropriate second threaded hole 16 on the adjustment plate 12 are aligned, and the bolts are passed through and tightened. The locking rod 18 and the locking hole 17 are threadedly matched. After the locking rod 18 passes through the second adjustment seat 14, it is locked with the locking groove 19 on the adjustment plate 12. The first connecting tube 6 and the valve body 1 are installed in coordination, and the bolts are passed through the fixing flange 9 and the connecting flange 10 and tightened.

[0039] When in the overall installation state, the valve body 1 with the fixing flange 9 and the second connecting pipe 8 with the connecting flange 10 are connected with the external pipeline, and the bolts are passed through and locked to realize the overall installation operation.

[0040] When in the opening and closing adjustment state, before the opening and closing adjustment, grasp the limit ring 24, pull the limit rod 21 out of the limit hole 23 of the limit seat 22, the spring 25 is stretched, and the drive motor 4 is started. The drive motor 4 drives the valve stem 2 and the valve core 3 to rotate and adjust to achieve pipeline opening and closing adjustment. After the opening and closing adjustment is to a certain extent, loosen the limit ring 24, the spring 25 retracts, and the limit rod 21 is reset and inserted into the appropriate limit hole 23.

[0041] In all the schemes mentioned above, the connection between the two components can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which will not be listed here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A hard seal structure switch valve, comprising a valve body (1), characterized in that: A valve stem (2) is rotatably provided on the valve body (1), and a valve core (3) is provided at the bottom end of the valve stem (2) corresponding to the valve body (1). A driving motor (4) is connected to the upper end of the valve stem (2), and a support rod (5) is connected between the driving motor (4) and the valve body (1). There are multiple support rods (5). A connecting mechanism is detachably provided on the right side of the valve body (1), and the connecting mechanism includes a first connecting pipe (6), an extension pipe (7) and a second connecting pipe (8). The first connecting pipe (6) and the valve body (1) are detachably provided, and the extension pipe (7) is slidably installed on the inner end of the first connecting pipe (6), and the second connecting pipe (8) is slidably installed on the outer end of the extension pipe (7). Fixed flanges (9) are provided on both sides of the outer end surface of the valve body (1), and connecting flanges (10) are provided on the first connecting pipe (6) and the second connecting pipe (8). The fixed flange (9) and the connecting flange (10) are connected by bolts.

2. The hard seal structure switch valve according to claim 1, characterized in that: Sliding sealing bearings (11) are provided on both sides of the outer end surface of the extension tube (7) corresponding to the first connecting tube (6) and the second connecting tube (8).

3. The hard seal structure switch valve according to claim 1, characterized in that: The front and rear end surfaces of the extension tube (7) are both connected to an adjustment plate (12); the front and rear ends of the first connecting tube (6) are both provided with a first adjustment seat (13) corresponding to the adjustment plate (12); and the front and rear ends of the second connecting tube (8) are both provided with a second adjustment seat (14) corresponding to the adjustment plate (12).

4. The hard seal structure switch valve according to claim 3, characterized in that: A first threaded hole (15) is provided on each of the two first adjustment seats (13), and a second threaded hole (16) is provided on each of the two adjustment plates (12) corresponding to the first threaded hole (15). A plurality of second threaded holes (16) are arranged at intervals, and the first threaded hole (15) and the second threaded hole (16) are connected by bolts.

5. The hard seal structure switch valve according to claim 3, characterized in that: The two second adjustment seats (14) are each provided with a locking hole (17), the two locking holes (17) are each provided with a locking rod (18), the locking rod (18) and the locking hole (17) are threadedly connected, and the two adjustment plates (12) are each provided with a locking groove (19) corresponding to the locking rod (18).

6. The hard seal structure switch valve according to claim 1, characterized in that: The front end face of the valve body (1) is provided with a limit plate (20), a limit rod (21) is passed through the limit plate (20), the outer end face of the valve stem (2) is provided with a limit seat (22) corresponding to the limit rod (21), the outer end face of the limit seat (22) is provided with a limit hole (23) corresponding to the limit rod (21), and a plurality of limit holes (23) are provided in the circumferential direction.

7. The hard seal structure switch valve according to claim 6, characterized in that: A limiting ring (24) is provided at the front end of the limiting rod (21), and a spring (25) is connected between the limiting ring (24) and the limiting plate (20).

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