Conical surface stop valve

Abstract

A plane bearing penetrates through a valve rod to be arranged on the upper surface of a convex ring, and a threaded opening and a liquid hole which are connected in a penetrating mode from top to bottom are formed in the middle of a valve element. The threaded sleeve is in threaded connection with a threaded opening in the valve element and presses the plane bearing downwards; the rotating fastening direction of the threaded sleeve on the valve element is opposite to the rotating fastening direction of the valve rod on the valve sleeve. According to the conical surface stop valve, the plane bearing penetrates through the valve rod and is arranged on the upper surface of the convex ring, and the threaded sleeve is in threaded connection with the threaded opening in the valve element and presses the plane bearing downwards; the rotating fastening direction of the threaded sleeve on the valve element is opposite to the rotating fastening direction of the valve rod on the valve sleeve. At the moment that the valve element is separated from the connecting hole path, rotation of the valve element is limited by the connecting hole path to a certain degree, rotation of the valve rod tends to act on the threaded sleeve, at the moment, the threaded sleeve tends to be fastened on the valve element, and through the limitation, the possibility of loosening between the threaded sleeve and the valve element is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of stop valve, especially a conical face stop valve. BACKGROUND

[0002] The conical face stop valve is one kind of stop valve, which is widely used in the hydraulic pipeline system of the hydraulic support of the fully mechanized coal mining face in coal mine, and mainly comprises a valve body, a valve sleeve, a valve core, a valve rod and a hand wheel. The valve rod drives the valve core to move up and down by rotating the hand wheel, so as to realize the opening or closing of the valve, and the hydraulic system of the support can be disconnected from the main pipeline without affecting the normal work of other supports.

[0003] In order to use the conical face stop valve normally, a screw sleeve is arranged on the valve core, and the valve core and the screw sleeve are connected by threads, and the valve rod is fixed on the valve core. During the rotation operation of the valve rod, the rotation of the valve rod can easily damage the thread connection between the valve core and the screw sleeve. For example, during the rotation of the valve rod downward, the rotation is applied to the valve core, and the valve core is loose. Correspondingly, during the rotation of the valve rod upward, the rotation is applied to the screw sleeve, and the screw sleeve is loose. SUMMARY

[0004] The main purpose of the utility model is to provide a conical face stop valve, which aims to solve the problem that the combination of the valve core and the screw sleeve in the conical face stop valve is easy to be loose.

[0005] In order to achieve the above purpose, the utility model provides a conical face stop valve, which comprises:

[0006] The valve body is provided with an upper flow channel and a lower flow channel in parallel in the height direction, a connecting hole path is provided between the upper flow channel and the lower flow channel, and a valve sleeve hole is provided at the top of the valve body;

[0007] The valve sleeve is threadedly connected to the valve sleeve hole;

[0008] The valve rod penetrates and is threadedly connected to the valve sleeve, and a convex ring is arranged on the outer periphery of the lower end of the valve rod;

[0009] The plane bearing is arranged on the upper surface of the convex ring and penetrates the valve rod;

[0010] The valve core is arranged in the valve sleeve hole and forms a separable combination with the connecting hole path, a threaded hole and a liquid hole are arranged in the middle of the valve core and connected from top to bottom, and the lower end of the valve rod extends into the threaded hole;

[0011] The screw sleeve is threadedly connected to the threaded hole on the valve core and presses the plane bearing downward;

[0012] The rotation fastening direction of the screw sleeve on the valve core is opposite to the rotation fastening direction of the valve rod on the valve sleeve.

[0013] Further, a gap cavity is formed between the inner periphery of the screw sleeve and the outer periphery of the valve rod, and the bottom end of the valve rod is provided with a pressure equalization channel extending into the gap cavity.

[0014] Further, the inner diameter of the screw sleeve is consistent with the outer diameter of the valve rod, the inner wall of the screw sleeve is provided with a straight groove extending in the length direction, the inner wall of the screw sleeve is annularly provided with an annular groove communicated to the straight groove, and the bottom end of the valve rod is provided with a pressure equalization channel extending into the annular groove.

[0015] Further, the annular groove is arranged at the bottom of the screw sleeve.

[0016] Further, the planar bearing is clamped with a buffer ring in the thickness direction of the planar bearing.

[0017] Further, the buffer ring is fixed to the screw sleeve.

[0018] Further, the valve sleeve is provided with a first sealing ring corresponding to the outer periphery of the valve sleeve hole position.

[0019] Further, the valve core is provided with a second sealing ring corresponding to the outer periphery of the valve sleeve position.

[0020] Further, the valve rod is provided with a third sealing ring corresponding to the outer periphery of the valve sleeve position.

[0021] Further, the convex ring is fixedly connected to the valve rod.

[0022] The conical surface stop valve provided by the utility model, the planar bearing is arranged on the upper surface of the convex ring through the valve rod, and the screw sleeve is threadedly connected to the threaded port on the valve core to press down the planar bearing; the rotation fastening direction of the screw sleeve on the valve core is opposite to the rotation fastening direction of the valve rod on the valve sleeve. At the moment when the valve core and the connecting hole path are separated, the rotation of the valve core limits the connecting hole path to a certain extent, and the rotation of the valve rod tends to act on the screw sleeve, at which time the screw sleeve tends to be fastened on the valve core, and the above limitation reduces the possibility of loosening between the screw sleeve and the valve core. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a schematic view (combined state) of the first embodiment of the conical surface stop valve of the utility model;

[0024] Figure 2 is Figure 1 a partial enlarged view in the

[0025] Figure 3This is a schematic diagram of the valve core in the conical stop valve of the first embodiment of this utility model;

[0026] Figure 4 This is a schematic diagram (separated state) of the conical shut-off valve of the first embodiment of this utility model;

[0027] Figure 5 This is a schematic diagram (in the assembled state) of the conical stop valve of the second embodiment of this utility model;

[0028] Figure 6 yes Figure 5 A magnified view of a portion of the image.

[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0031] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” “the,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, units, modules, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connection or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

[0032] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0033] Reference Figures 1 to 6 In one embodiment of this utility model, a conical shut-off valve includes:

[0034] Valve body 100, in the height direction parallel to the upper flow channel 110 and lower flow channel 120, the upper flow channel 110 and the lower flow channel 120 between the guide hole 130 is connected, the top of the valve body 100 is provided with a valve sleeve hole;

[0035] Valve sleeve 200, threaded connection in the valve sleeve hole;

[0036] Valve stem 300, through and threaded connection in the valve sleeve 200, the outer periphery of the lower end of the valve stem 300 is provided with a convex ring 310;

[0037] Plane bearing 400, through the valve stem 300 is provided on the upper surface of the convex ring 310;

[0038] Valve core 500, provided in the valve sleeve hole and with the coupling hole 130 form separable combination, the valve core 500 middle part is provided with a thread port 510 and liquid hole 520 from top to bottom through the connection, wherein, the lower end of the valve stem 300 into the thread port 510;

[0039] Screw sleeve 600, threaded connection in the valve core 500 on the thread port 510 and press down the plane bearing 400;

[0040] Wherein, the screw sleeve 600 on the valve core 500 on the rotation of the fastening direction and the valve stem 300 on the valve sleeve 200 on the rotation of the fastening direction is opposite.

[0041] In the prior art, in the process of rotating the valve stem, the rotation of the valve stem is easy to damage the thread combination between the valve core and the screw sleeve.

[0042] In the utility model, the taper face stop valve includes valve body 100, valve sleeve 200, valve stem 300, plane bearing 400, valve core 500 and screw sleeve 600.

[0043] Valve body 100 in the height direction parallel to the upper flow channel 110 and lower flow channel 120. Lower flow channel 120 is used for connecting the main pipeline, and the upper flow channel 110 is used for connecting the inlet / outlet pipe of the reversing valve. The upper flow channel 110 and the lower flow channel 120 are communicated with the connecting hole 130, and when the connecting hole 130 is closed, the main pipeline is not hindered to work normally. The top of the valve body 100 is provided with a valve sleeve hole, which provides a basis for the installation of the valve stem 300 and the valve core 500.

[0044] Valve sleeve 200 is threaded in the valve sleeve hole, so that the valve sleeve 200 is used as a fixed base.

[0045] The valve stem 300 passes through and is screwed to the valve sleeve 200, when the valve stem 300 is rotated upward, the valve stem 300 moves away from the coupling hole 130, when the valve stem 300 is rotated downward, the valve stem 300 moves close to the coupling hole 130. The outer periphery of the lower end of the valve stem 300 is provided with a convex ring 310, which provides a basis for the fixation of the valve stem 300.

[0046] The plane bearing 400 is arranged on the upper surface of the convex ring 310 through the valve stem 300. The installation of the plane bearing 400 requires the installation of a plurality of components (such as hand wheels, etc.) on the upper end of the plane bearing 400.

[0047] The valve core 500 is arranged in the valve sleeve hole and forms a separable combination with the coupling hole 130. The valve core 500 is provided with a threaded hole 510 and a liquid hole 520 connected from top to bottom. Generally, the inner diameter of the threaded hole 510 is larger than that of the liquid hole 520. The lower end of the valve stem 300 extends into the threaded hole 510, covering the liquid hole 520.

[0048] The screw sleeve 600 is screwed to the threaded hole 510 on the valve core 500 and presses down the plane bearing 400. The screw sleeve 600 clamps the plane bearing 400 with the convex ring 310, so that the rotation of the valve stem 300 is transmitted through the plane bearing 400, and does not interfere with the threaded connection between the valve core 500 and the valve sleeve 200. The type of plane bearing 400 is not limited, for example, the plane bearing 400 includes an upper ring part and a lower ring part, and a rolling structure is arranged between the upper ring part and the lower ring part, at this time, the upper ring part and the lower ring part can form smooth relative rotation.

[0049] The rotation and fastening direction of the screw sleeve 600 on the valve core 500 is opposite to that of the valve stem 300 on the valve sleeve 200. At the moment when the valve core 500 is separated from the coupling hole 130, the rotation of the valve core 500 is limited to a certain extent for the coupling hole 130, and the rotation of the valve stem 300 tends to act on the screw sleeve 600, at this time, the screw sleeve 600 tends to be fastened on the valve core 500, through the above limitation, the possibility of loosening between the screw sleeve 600 and the valve core 500 is reduced.

[0050] In summary, the plane bearing 400 is arranged on the upper surface of the convex ring 310 through the valve stem 300, the screw sleeve 600 is screwed to the threaded hole 510 on the valve core 500 and presses down the plane bearing 400; the rotation and fastening direction of the screw sleeve 600 on the valve core 500 is opposite to that of the valve stem 300 on the valve sleeve 200. At the moment when the valve core 500 is separated from the coupling hole 130, the rotation of the valve core 500 is limited to a certain extent for the coupling hole 130, and the rotation of the valve stem 300 tends to act on the screw sleeve 600, at this time, the screw sleeve 600 tends to be fastened on the valve core 500, through the above limitation, the possibility of loosening between the screw sleeve 600 and the valve core 500 is reduced.

[0051] Referring to Figures 1 to 2 In one embodiment, a gap cavity 610 is formed between the inner periphery of the screw sleeve 600 and the outer periphery of the valve stem 300, and the bottom end of the valve stem 300 is provided with a pressure equalization channel 320 extending into the gap cavity 610.

[0052] In this embodiment, the screw sleeve 600 and the valve stem 300 form a gap fit, and the pressure equalization channel 320 is provided at the bottom end of the valve stem 300, so that the negative effects of pressure generation during the rising and falling of the valve stem 300 are eliminated.

[0053] Referring to Figures 5 to 6 In one embodiment, the inner diameter of the screw sleeve 600 is consistent with the outer diameter of the valve stem 300, the inner wall of the screw sleeve 600 is provided with a straight groove 620 extending in the length direction, the inner wall of the screw sleeve 600 is provided with an annular groove 630 leading to the straight groove 620, and the bottom end of the valve stem 300 is provided with a pressure equalization channel 320 extending into the annular groove 630.

[0054] In this embodiment, the inner diameter of the screw sleeve 600 is consistent with the outer diameter of the valve stem 300, so that the degree of combination between the screw sleeve 600 and the valve stem 300 is high, the possibility of loosening is reduced, and the stability of the valve stem 300 is improved. Through the cooperation of the straight groove 620 and the annular groove 630, the screw sleeve 600 can be stably fixed while ensuring that the hydraulic oil can still pass through.

[0055] In one embodiment, the annular groove 630 is provided at the bottom of the screw sleeve 600.

[0056] In this embodiment, the position of the annular groove 630 is limited, so that the processing difficulty of the annular groove 630 is reduced.

[0057] In one embodiment, the number of straight grooves 620 is multiple and is arranged at intervals in the circumferential direction of the screw sleeve 600.

[0058] In this embodiment, by increasing the number of straight grooves 620, the risk of blockage is reduced, and at the same time, the resistance of the hydraulic oil passing through is reduced, and the smoothness of operation is improved. The number of straight grooves 620 can be 4, 6, or 8, etc.

[0059] In one embodiment, the planar bearing 400 and the screw sleeve 600 are clamped with a buffer ring in the thickness direction of the planar bearing 400.

[0060] In the embodiment, the negative influence of the valve rod 300 on the threaded connection between the valve sleeve 200 and the valve core 500 is eliminated due to the presence of the plane bearing 400, and the buffer ring is introduced to avoid the structural damage of the plane bearing 400 and improve the stability of the valve rod 300 during driving. The material of the buffer ring can be plastic or rubber, etc., thereby providing a buffering effect.

[0061] In one embodiment, the buffer ring is fixed to the screw sleeve 600.

[0062] In the embodiment, the installation and disassembly process is facilitated by fixing the buffer ring to the screw sleeve 600. The connection between the buffer ring and the screw sleeve 600 can be clamping or bonding, etc.

[0063] In one embodiment, the valve sleeve 200 is provided with a first sealing ring corresponding to the outer periphery of the valve sleeve hole position.

[0064] In the embodiment, the sealing effect between the valve sleeve 200 and the valve sleeve hole is improved by introducing the first sealing ring. The number of the first sealing ring can be selected according to the application scenario.

[0065] In one embodiment, the valve core 500 is provided with a second sealing ring corresponding to the outer periphery of the valve sleeve 200 position.

[0066] In the embodiment, the sealing effect between the valve core 500 and the valve sleeve 200 is improved by introducing the second sealing ring. The number of the second sealing ring can be selected according to the application scenario.

[0067] In one embodiment, the valve rod 300 is provided with a third sealing ring corresponding to the outer periphery of the valve sleeve 200 position.

[0068] In the embodiment, the sealing effect between the valve sleeve 200 and the valve rod 300 is improved by introducing the third sealing ring. The number of the third sealing ring can be selected according to the application scenario.

[0069] In one embodiment, the convex ring 310 is fixedly connected to the valve rod 300.

[0070] In the embodiment, the convex ring 310 is limited to a connection structure, thereby providing a basis for the installation and disassembly of the plane bearing 400. The connection between the convex ring 310 and the valve rod 300 can be pin connection, etc.

[0071] In summary, the conical surface stop valve provided by the utility model, the plane bearing 400 is arranged on the upper surface of the convex ring 310 by penetrating the valve rod 300, and the screw sleeve 600 is screwed on the threaded port 510 on the valve core 500 to press down the plane bearing 400; the rotation fastening direction of the screw sleeve 600 on the valve core 500 is opposite to the rotation fastening direction of the valve rod 300 on the valve sleeve 200. At the moment when the valve core 500 is separated from the connecting hole path 130, the rotation of the valve core 500 is limited to a certain extent for the connecting hole path 130, and the rotation of the valve rod 300 tends to act on the screw sleeve 600, at this time, the screw sleeve 600 tends to be fastened on the valve core 500 instead, and through the above limitation, the possibility of loosening between the screw sleeve 600 and the valve core 500 is reduced.

[0072] The above merely describes the preferred embodiments of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent flow transformation by using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. A conical shut-off valve, characterized in that, include: The valve body (100) has an upper flow channel (110) and a lower flow channel (120) arranged in parallel in the height direction. A connecting hole (130) is provided between the upper flow channel (110) and the lower flow channel (120). A valve sleeve hole is provided on the top of the valve body (100). Valve sleeve (200), threadedly connected to the valve sleeve hole; A valve stem (300) passes through and is threadedly connected to the valve sleeve (200), and a raised ring (310) is provided on the outer periphery of the lower end of the valve stem (300); A planar bearing (400) passes through the valve stem (300) and is disposed on the upper surface of the convex ring (310); The valve core (500) is disposed in the valve sleeve hole and forms a separable connection with the connecting hole (130). The valve core (500) is provided with a threaded port (510) and a liquid hole (520) that are connected from top to bottom in the middle. The lower end of the valve stem (300) extends into the threaded port (510). A threaded sleeve (600) is threaded to the threaded port (510) on the valve core (500) and presses down the plane bearing (400); The direction of rotational fastening of the threaded sleeve (600) on the valve core (500) is opposite to the direction of rotational fastening of the valve stem (300) on the valve sleeve (200).

2. The conical shut-off valve according to claim 1, characterized in that, A gap cavity (610) is formed between the inner circumference of the threaded sleeve (600) and the outer circumference of the valve stem (300), and a pressure equalization channel (320) extending to the gap cavity (610) is provided at the bottom end of the valve stem (300).

3. The conical shut-off valve according to claim 1, characterized in that, The inner diameter of the threaded sleeve (600) is the same as the outer diameter of the valve stem (300). The inner wall of the threaded sleeve (600) is provided with a straight groove (620) extending in the length direction. The inner wall of the threaded sleeve (600) is provided with an annular groove (630) that leads to the straight groove (620). The bottom end of the valve stem (300) is provided with a pressure equalization channel (320) extending to the annular groove (630).

4. The conical shut-off valve according to claim 3, characterized in that, The annular groove (630) is provided at the bottom of the threaded sleeve (600).

5. The conical shut-off valve according to any one of claims 1 to 4, characterized in that, The planar bearing (400) and the threaded sleeve (600) clamp a buffer ring in the thickness direction of the planar bearing (400).

6. The conical shut-off valve according to claim 5, characterized in that, The buffer ring is fixed to the threaded sleeve (600).

7. The conical shut-off valve according to any one of claims 1 to 4, characterized in that, A first sealing ring is provided on the outer periphery of the valve sleeve (200) corresponding to the valve sleeve hole position.

8. The conical shut-off valve according to claim 7, characterized in that, The valve core (500) is provided with a second sealing ring on its outer periphery corresponding to the position of the valve sleeve (200).

9. The conical shut-off valve according to claim 8, characterized in that, A third sealing ring is provided on the outer periphery of the valve stem (300) corresponding to the position of the valve sleeve (200).

10. The conical shut-off valve according to any one of claims 1 to 4, characterized in that, The convex ring (310) is fixedly connected to the valve stem (300).

Images