Pressure-resistant valve for pipeline transportation

Abstract

The utility model discloses a pressure-resistant valve for pipeline transportation, which relates to the technical field of valves and comprises a first valve body and a second valve body, a rotatably connected valve rod is mounted on the second valve body, the lower end of the valve rod extends into the first valve body and is fixedly provided with a valve clack, and a sealing gasket is movably sleeved at the joint of the first valve body and the second valve body around the valve rod. Through the arrangement of the sealing gasket, the first spring and the pressure distribution piece, when the pressure of fluid in the first valve body is increased, the distance between the first valve body and the second valve body is increased under the action of the elastic connecting structure for pressure relief, at the moment, the elastic force of the first spring drives the sealing gasket to be continuously pressed at the upper end of the first valve body, and corresponding deformation occurs; therefore, the gap between the enlarged first valve body and the second valve body is filled, a good sealing effect is achieved, and the defect that when the gap between the first valve body and the second valve body is enlarged, the sealing effect of the sealing gasket becomes poor can be overcome.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, especially pipeline transportation is with pressure -resistant valve. BACKGROUND

[0002] The traditional control valve is prone to material spraying in the use process, causes the reduction of service life because of rust, on the other hand, the traditional control valve will be damaged due to the pressure difference of pipeline, a large amount of material is leaked, thereby causing a large amount of resource waste.

[0003] Through the retrieval, the patent file with the announcement number "CN108150654B" discloses a kind of ocean engineering ship antirust pressure-resistant valve, including first valve body, the first valve body one side is equipped with feed inlet, the feed inlet inside is equipped with feed channel, the first valve body other side is equipped with discharge outlet, the discharge outlet inside is equipped with discharge channel, the discharge channel and feed channel between are equipped with connecting groove, the first valve body top is equipped with second valve body.

[0004] Based on the above retrieval, in combination with prior art, it is found that although the existing pressure-resistant valve can be relieved by the elastic connection of the first valve body and the second valve body, the distance between the first valve body and the second valve body will increase when relieved, so that the sealing performance of the sealing gasket is poor, and leakage may occur when the pressure is high, so a pressure-resistant valve for pipeline transportation is needed. UTILITY MODEL CONTENT

[0005] The purpose of the present application is to provide a kind of pressure-resistant valve for pipeline transportation to solve the problems raised in the above background.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a kind of pressure-resistant valve for pipeline transportation, including first valve body and second valve body, second valve body is installed with the valve stem of rotation connection, the valve stem lower end is inserted into first valve body and is fixed with valve flap, the connecting place of first valve body and second valve body is movably sleeved with sealing gasket around valve stem;

[0007] Second valve body lower end middle part is equipped with installation groove, first spring is installed in installation groove, first spring upper end is fixed with the top wall in installation groove, first spring lower end is fixed with sealing gasket upper end by cloth pressure piece;

[0008] First spring is movably sleeved on valve stem;

[0009] Elastic connection structure is arranged between first valve body and second valve body.

[0010] As a further supplement to the present scheme, cloth pressure piece includes mounting ring, mounting ring upper end is fixed with first spring lower end, mounting ring lower end is fixed with sealing gasket upper end, the inner diameter of mounting ring is consistent with the outer diameter of valve stem, the outer diameter of mounting ring is consistent with the inner diameter of installation groove.

[0011] The mounting ring is movably sleeved on the valve rod.

[0012] As a further supplement to the scheme, the elastic connecting structure comprises:

[0013] The adjusting sleeve is elastically embedded in the limiting groove on the first valve body through the elastic member;

[0014] The detachable fixing rod is detachably fixed at the lower end of the adjusting sleeve, and the upper end of the detachable fixing rod is movably penetrated through the second valve body and connected with the limiting part, and the lower end of the limiting part is abuttingly fixed to the upper end surface of the second valve body.

[0015] As a further supplement to the scheme, the upper end opening diameter of the limiting groove is smaller than the inner diameter of the limiting groove itself, and the upper end opening diameter of the limiting groove is consistent with the outer diameter of the adjusting sleeve;

[0016] The lower end of the adjusting sleeve is formed with an extension ring, and the diameter of the extension ring is larger than the outer diameter of the adjusting sleeve and is consistent with the inner diameter of the limiting groove;

[0017] The elastic member comprises a second spring, and the upper and lower ends of the second spring are respectively fixed to the inner top wall of the limiting groove and the upper end of the extension ring.

[0018] As a further supplement to the scheme, the detachable fixing rod comprises a connecting screw rod, and the limiting part comprises a knob, the upper end of the connecting screw rod is fixed to the lower end of the knob, and the lower end of the knob is abuttingly fixed to the upper end surface of the second valve body;

[0019] The lower end of the connecting screw rod is threadedly connected with the adjusting sleeve through a connecting sleeve.

[0020] As a further supplement to the scheme, the connecting sleeve comprises a sliding sleeve, the sliding sleeve is fixedly embedded on the upper end of the adjusting sleeve, and the sliding sleeve is matched with the connecting screw rod;

[0021] When the connecting screw rod is screwed into the sliding sleeve, the sliding sleeve is driven to lift the adjusting sleeve when the connecting screw rod is continuously rotated;

[0022] The lower end of the second valve body is provided with a let-in groove, and the inner diameter of the let-in groove is consistent with the outer diameter of the adjusting sleeve.

[0023] In summary, the technical effects and advantages of the utility model are:

[0024] 1. In the present invention, through the arrangement of the sealing gasket, the first spring and the pressure piece, when the fluid pressure in the first valve body increases, the distance between the first valve body and the second valve body increases under the action of the elastic connection structure to relieve the pressure. At this time, the elastic force of the first spring drives the sealing gasket to continue to press tightly against the upper end of the first valve body and deform accordingly, thereby filling the increased gap between the first valve body and the second valve body, achieving a good sealing effect. In this way, the disadvantage that the sealing effect of the sealing gasket deteriorates when the gap between the first valve body and the second valve body increases can be avoided.

[0025] 2. In the present invention, by rotating the knob, connecting screw, adjusting sleeve, sliding sleeve and the second spring, the operator only needs to pass the connecting screw through the second valve body and rotate the knob to make the connecting screw initially threadedly connected with the sliding sleeve to complete the assembly of the first valve body and the second valve body. The connection operation is simple, and the pressure-resistant valve for pipeline transportation is easy to install and disassemble, and subsequent maintenance is convenient.

[0026] In addition, the staff can continue to turn the knob to make the connecting screw drive the sleeve to rise, and when the sleeve rises, it drives the adjusting sleeve to rise, thereby compressing the second spring, so that the elastic stroke of the second spring is reduced, thereby reducing the gap that can be formed between the first valve body and the second valve body, thereby achieving the purpose of adjusting the maximum gap between the first valve body and the second valve body, so that the pressure-resistant valve for pipeline transportation can be applied to different pressure ranges and is more flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 Schematic diagram of the three-dimensional structure in this embodiment;

[0029] Figure 2 Schematic diagram of the cross-sectional structure in this embodiment;

[0030] Figure 3 for Figure 2 A magnified view of the structure in Figure 2.

[0031] In the figure: 1. First valve body; 101. Limiting groove; 2. Second valve body; 201. Mounting groove; 202. Give way groove; 3. Valve disc; 4. Valve stem; 5. Rotating sleeve; 6. Wheel handle; 7. Knob; 8. Sealing gasket; 9. First spring; 10. Mounting ring; 11. Connecting screw; 12. Adjusting sleeve; 1201. Extension ring; 13. Sliding sleeve; 14. Second spring. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0033] Embodiment: refer to Figures 1-3 The pressure-resistant valve for pipeline transportation shown in the figure comprises a first valve body 1 and a second valve body 2, a valve rod 4 rotatably connected is installed on the second valve body 2, the lower end of the valve rod 4 extends into the first valve body 1 and a valve flap 3 is fixed thereon, and a sealing gasket 8 is movably sleeved around the valve rod 4 at the connecting part of the first valve body 1 and the second valve body 2;

[0034] The second valve body 2 is further provided with a rotating sleeve 5, and the upper end of the valve rod 4 is further provided with a handle 7. In addition, the pressure-resistant valve has corresponding structures in the existing valve, such as a limiting groove and a limiting baffle, and the specific structure and working principle thereof are prior art (refer to the structure disclosed in the patent document with the announcement number "CN108150654B"), which will not be described here.

[0035] A mounting groove 201 is formed in the middle of the lower end of the second valve body 2, a first spring 9 is installed in the mounting groove 201, the upper end of the first spring 9 is fixed to the top wall in the mounting groove 201, and the lower end of the first spring 9 is fixed to the upper end of the sealing gasket 8 through a cloth pressure piece;

[0036] The first spring 9 is movably sleeved on the valve rod 4;

[0037] An elastic connection structure is arranged between the first valve body 1 and the second valve body 2.

[0038] Based on the above structure, when the fluid pressure in the first valve body 1 increases, the distance between the first valve body 1 and the second valve body 2 increases under the action of the elastic connection structure to release pressure. At this time, the elastic force of the first spring 9 drives the sealing gasket 8 to continue to press tightly on the upper end of the first valve body 1 and causes corresponding deformation, thereby filling the increased gap between the first valve body 1 and the second valve body 2 and achieving good sealing effect. In this way, the disadvantage that the sealing effect of the sealing gasket 8 becomes poor when the gap between the first valve body 1 and the second valve body 2 increases can be avoided.

[0039] Further, the cloth pressure piece comprises a mounting ring 10, the upper end of the mounting ring 10 is fixed to the lower end of the first spring 9, the lower end of the mounting ring 10 is fixed to the upper end of the sealing gasket 8, the inner diameter of the mounting ring 10 is consistent with the outer diameter of the valve rod 4, and the outer diameter of the mounting ring 10 is consistent with the inner diameter of the mounting groove 201;

[0040] The mounting ring 10 is movably sleeved on the valve rod 4.

[0041] Through the arrangement of the mounting ring 10, the pressure applied by the first spring 9 can be uniformly distributed on the sealing gasket 8, so that the sealing gasket 8 can keep uniform when deformed, and the sealing gasket 8 can be prevented from being tilted and deformed to cause poor sealing.

[0042] Further, the elastic connecting structure comprises an adjusting sleeve 12 and a detachable fixing rod, the adjusting sleeve 12 is elastically embedded in a limiting groove 101 on the first valve body 1 through an elastic member, the lower end of the detachable fixing rod is detachably fixed with the upper end of the adjusting sleeve 12, and the upper end of the detachable fixing rod movably penetrates the second valve body 2 and is connected with a limiting part, and the lower end of the limiting part abuts against the upper end surface of the second valve body 2.

[0043] The upper end opening diameter of the limiting groove 101 is smaller than the inner diameter of the limiting groove 101, and the upper end opening diameter of the limiting groove 101 is consistent with the outer diameter of the adjusting sleeve 12.

[0044] The lower end of the adjusting sleeve 12 is formed with an extension ring 1201, the diameter of the extension ring 1201 is greater than the outer diameter of the adjusting sleeve 12 and is consistent with the inner diameter of the limiting groove 101.

[0045] The elastic member comprises a second spring 14, and the upper and lower ends of the second spring 14 are respectively fixed with the top wall in the limiting groove 101 and the upper end of the extension ring 1201.

[0046] The detachable fixing rod comprises a connecting screw rod 11, and the limiting part comprises a knob 7, the upper end of the connecting screw rod 11 is fixed with the lower end of the knob 7, and the lower end of the knob 7 abuts against the upper end surface of the second valve body 2.

[0047] The lower end of the connecting screw rod 11 is threadedly connected with the adjusting sleeve 12 through a connecting sleeve.

[0048] The connecting sleeve comprises a sliding sleeve 13, the sliding sleeve 13 is fixedly embedded on the upper end of the adjusting sleeve 12, and the sliding sleeve 13 is matched with the connecting screw rod 11.

[0049] When the connecting screw rod 11 is screwed into the sliding sleeve 13, the sliding sleeve 13 is driven to lift the adjusting sleeve 12 by continuing to rotate the connecting screw rod 11.

[0050] The lower end of the second valve body 2 is provided with a let-go groove 202, and the inner diameter of the let-go groove 202 is consistent with the outer diameter of the adjusting sleeve 12.

[0051] During the installation process, the worker only needs to pass the connecting screw rod 11 through the second valve body 2, and rotate the knob 7 to preliminarily threadedly connect the connecting screw rod 11 with the sliding sleeve 13, so that the assembly of the first valve body 1 and the second valve body 2 can be completed, the connection operation is simple, the pipeline conveying pressure-resistant valve is convenient to install and disassemble, and subsequent maintenance is facilitated.

[0052] After connection, the connecting screw rod 11, the adjusting sleeve 12, the second spring 14 and the knob 7 jointly form an elastic connection structure, so that the first valve body 1 and the second valve body 2 are elastically connected, and the requirement of changing the gap between the first valve body 1 and the second valve body 2 when the pressure becomes larger is met.

[0053] In addition, the staff can also make the connecting screw rod 11 drive the sliding sleeve 13 to rise by continuing to rotate the knob 7, the sliding sleeve 13 drives the adjusting sleeve 12 to rise when rising, so that the second spring 14 is compressed, the elastic stroke of the second spring 14 is reduced, so that the gap between the first valve body 1 and the second valve body 2 can be reduced, the purpose of adjusting the maximum gap between the first valve body 1 and the second valve body 2 is achieved, and the pipeline conveying pressure-resistant valve can be applied to different pressure ranges and is more flexible to use.

[0054] The utility model discloses working principle: in the daily use process, the staff only needs to pass through the second valve body 2 with connecting screw rod 11, and rotates knob 7, so that connecting screw rod 11 is primarily with sliding sleeve 13 threaded connection, can complete the assembly of first valve body 1 and second valve body 2, and the operation of connecting is simple, and the pipeline conveying pressure-resistant valve is convenient to install and dismount, and subsequent maintenance is convenient.

[0055] After connection, the connecting screw rod 11, the adjusting sleeve 12, the second spring 14 and the knob 7 jointly form an elastic connection structure, so that the first valve body 1 and the second valve body 2 are elastically connected, and the requirement of changing the gap between the first valve body 1 and the second valve body 2 when the pressure becomes larger is met.

[0056] When the fluid pressure in the first valve body 1 increases, the first valve body 1 and the second valve body 2 increase the distance under the action of the elastic connection structure and release pressure, at this time, the elastic force of the first spring 9 drives the sealing gasket 8 to continue to press tightly on the upper end of the first valve body 1 and deform correspondingly, so as to fill the gap between the first valve body 1 and the second valve body 2, and good sealing effect is achieved, so that the defect that the sealing effect of the sealing gasket 8 becomes poor when the gap between the first valve body 1 and the second valve body 2 increases can be avoided.

[0057] Finally, it should be pointed out that: the above-mentioned only for preferred embodiment of the utility model and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A pressure-resistant valve for pipeline transportation, comprising a first valve body (1) and a second valve body (2), wherein a rotatably connected valve stem (4) is mounted on the second valve body (2), the lower end of the valve stem (4) extending into the first valve body (1) and fixed with a valve flap (3), a sealing gasket (8) being provided around a movable sleeve on the valve stem (4) at the connection between the first valve body (1) and the second valve body (2), and characterized in that: A mounting groove (201) is provided in the middle of the lower end of the second valve body (2), a first spring (9) is installed in the mounting groove (201), the upper end of the first spring (9) is fixed to the top wall of the mounting groove (201), and the lower end of the first spring (9) is fixed to the upper end of the sealing gasket (8) via a pressure piece; The first spring (9) is movably sleeved on the valve stem (4); An elastic connection structure is provided between the first valve body (1) and the second valve body (2).

2. A pressure-resistant valve for pipeline transportation according to claim 1, characterized in that: The pressure member includes a mounting ring (10), the upper end of the mounting ring (10) is fixed to the lower end of the first spring (9), the lower end of the mounting ring (10) is fixed to the upper end of the sealing gasket (8), the inner diameter of the mounting ring (10) is consistent with the outer diameter of the valve stem (4), and the outer diameter of the mounting ring (10) is consistent with the inner diameter of the mounting groove (201); Wherein, the mounting ring (10) is movably sleeved on the valve stem (4).

3. A pressure-resistant valve for pipeline transportation according to claim 2, characterized in that: The elastic connection structure includes: An adjusting sleeve (12), wherein the adjusting sleeve (12) is elastically embedded in the limiting groove (101) on the first valve body (1) via an elastic member; A detachable fixing rod, wherein the lower end of the detachable fixing rod is detachably fixed to the upper end of the adjusting sleeve (12), the upper end of the detachable fixing rod movably passes through the second valve body (2) and is connected to the limiting portion, and the lower end of the limiting portion is tightly pressed against the upper end surface of the second valve body (2).

4. A pressure-resistant valve for pipeline transportation according to claim 3, characterized in that: The diameter of the upper opening of the limiting groove (101) is smaller than the inner diameter of the limiting groove (101) itself, and the diameter of the upper opening of the limiting groove (101) is consistent with the outer diameter of the adjusting sleeve (12); An extension ring (1201) is formed at the lower end of the adjusting sleeve (12), and the diameter of the extension ring (1201) is larger than the outer diameter of the adjusting sleeve (12) and is consistent with the inner diameter of the limiting groove (101); The elastic member comprises a second spring (14), the upper and lower ends of which are respectively fixed to the inner top wall of the limiting groove (101) and the upper end of the extension ring (1201).

5. A pressure-resistant valve for pipeline transportation according to claim 4, characterized in that: The detachable fixing rod includes a connecting screw (11), the limiting portion includes a knob (7), the upper end of the connecting screw (11) is fixed to the lower end of the knob (7), and the lower end of the knob (7) is tightly pressed against the upper end surface of the second valve body (2); The lower end of the connecting screw (11) is threadedly connected to the adjusting sleeve (12) via a connecting sleeve.

6. A pressure-resistant valve for pipeline transportation according to claim 5, characterized in that: The connecting sleeve comprises a sliding sleeve (13), the sliding sleeve (13) is fixedly embedded in the upper end of the adjusting sleeve (12), and the sliding sleeve (13) is adapted to the connecting screw (11); When the connecting screw (11) is screwed into the sliding sleeve (13), the sliding sleeve (13) is driven to move the adjusting sleeve (12) upwards as the connecting screw (11) is continuously rotated; A clearance groove (202) is provided at the lower end of the second valve body (2), and the inner diameter of the clearance groove (202) is consistent with the outer diameter of the adjustment sleeve (12).

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