Valve facilitating sealing performance detection

Abstract

The utility model discloses a valve convenient for sealing performance detection, which relates to the technical field of valves, and comprises a valve body and a sealing element sleeved on the outer wall of a valve rod, the upper end of a sealing valve seat is concavely provided with an expanded settling tank, the sealing element is detachably mounted in the expanded settling tank, and the sealing element is in sliding fit with the outer wall of the valve rod; the outer wall of the valve cover is connected with an indicating cover, a sliding groove communicated with the interior of the valve cover is formed in the indicating cover, a floating rod is inserted into the sliding groove in a sliding mode, and a detection space is formed by the space between the inner wall of the valve cover and the upper side of the sealing piece in the expanded settling tank. The sealing element is sleeved on the outer wall of the valve rod in a sliding mode, the requirement that the valve rod rotates and lifts the valve element to regulate and control whether fluid flows in the valve or not is met, meanwhile, a detection space is formed by the space between the inner wall of the valve cover and the upper side of the sealing element in the expanded settling tank, and once fluid leaks, the floating rod slides along the sliding channel. And the height in the expansion part is increased, so that a worker can find whether the valve is sealed or not in time.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a valve which is convenient for sealing detection. Background Art

[0002] The valve is a key control component in the fluid delivery system, which is used to control the direction, pressure and flow of the fluid. The sealing of the valve determines whether the fluid flow overflows. In addition to using rubber or fluoroplastic materials on the valve disc sealing surface to selectively seal the flow hole to control whether the fluid flows, another place that needs to pay attention to the sealing is the valve stem position. Since the valve body is opened and closed by the valve stem to control the opening and closing of the valve disc, the rubber structure assembled with the valve stem to provide a sealing space is prone to excessive wear and aging after long-term use, affecting the sealing of the entire valve body. However, since the valve stem and the rubber structure are sealed in the valve seat, they need to be removed to test the sealing, which is inconvenient. Therefore, a valve that is easy to test for sealing is designed and produced here to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide a valve which is convenient for sealing detection, so as to solve the problems raised in the above-mentioned background technology.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a valve that is easy to perform sealing detection, comprising a valve body, one end of the valve body is set as an inlet end, the other end of the valve body is set as an outlet end, a sealing valve seat is provided between the inlet end and the outlet end, a flow hole connecting the inlet end and the outlet end is provided at the bottom end of the sealing valve seat, a valve cover is detachably provided at the upper end of the sealing valve seat, a valve stem is threadedly inserted on the valve cover, the end of the valve stem passes through the valve cover and enters into the sealing valve seat, and the valve stem is fixed with a valve core that can seal the flow hole.

[0005] It also includes a sealing member sleeved on the outer wall of the valve stem, the upper end of the sealing valve seat is recessed with an enlarged sedimentation groove, the sealing member is detachably installed in the enlarged sedimentation groove, the sealing member is slidably fitted with the outer wall of the valve stem, and blocks the gap between the valve stem and the inner wall of the enlarged sedimentation groove of the sealing valve seat;

[0006] The outer wall of the valve cover is connected to an indicator cover, and a sliding groove connected to the valve cover is provided in the indicator cover. An enlarged portion is provided at the end of the sliding groove away from the valve cover. A float rod is slidably inserted in the sliding groove, one end of the float rod extends into the enlarged portion, and the other end of the float rod extends into the valve cover. The space between the inner wall of the valve cover and the upper side of the seal in the enlarged sedimentation tank constitutes a detection space.

[0007] In a further embodiment, the valve cover and the side wall of the sealing valve seat are both extended with docking blocks, the docking blocks are provided with threaded holes, and fastening bolts are threadedly connected between two opposite threaded holes of the docking blocks.

[0008] In a further embodiment, the seal includes two fixed gaskets and a plurality of buffer gaskets arranged between the two fixed gaskets, a rubber sleeve is provided between two adjacent buffer gaskets and between a fixed gasket and a buffer gasket, and a socket hole for slidingly connecting with the valve stem is provided on the fixed gasket and the buffer gasket.

[0009] In a further embodiment, the outer diameters of the fixing gasket and the buffer gasket are the same as the inner diameter of the enlarged sedimentation tank, the rubber sleeve is annular in structure, and the radial side wall of the rubber sleeve is bent toward the center of the rubber sleeve to form an arc-shaped fitting portion.

[0010] In a further embodiment, the edge side wall of the upper fixing gasket extends upward to form an annular extension portion, and the outer wall of the annular extension portion is threadedly connected to the inner wall of the enlarged sedimentation tank;

[0011] The inner wall of the annular extension portion is provided with a toggle block.

[0012] In a further embodiment, a plurality of extension rods are symmetrically fixed to the upper end of the valve cover, a guide plate is fixed between the ends of the plurality of extension rods, and the guide plate is provided with a guide hole for slidingly plugging with the valve stem.

[0013] In a further embodiment, the end of the floating rod located in the detection space is a hollow spherical structure; the end of the floating rod located in the expanded portion of the indicator cover is a conical structure.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model is a valve that is easy to detect the sealing performance. The valve cover is assembled with a sealing valve seat, and a sealing member is slidably sleeved on the outer wall of a valve stem to meet the valve stem rotation lifting and lowering valve core to adjust whether there is a fluid flow demand in the valve. At the same time, a detection space is formed in the space between the inner wall of the valve cover and the upper side of the sealing member in an enlarged sedimentation tank. Once there is fluid leakage, the float rod will slide along the sliding channel to increase the height in the enlarged part, so that the staff can promptly find out whether the valve is sealed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0017] Figure 2 It is an exploded view of the main structure of an embodiment of the utility model;

[0018] Figure 3 This is a cross-sectional view of the valve cover structure of an embodiment of the utility model;

[0019] Figure 4 This is a structural cross-sectional view of a first embodiment of a sealing member according to an embodiment of the utility model;

[0020] Figure 5 This is a schematic structural diagram of a second embodiment of a sealing member according to an embodiment of the utility model;

[0021] Figure 6 This is a structural cross-sectional view of a second embodiment of a seal according to an embodiment of the utility model.

[0022] In the figure: 1, sealing valve seat; 2, outlet end; 3, inlet end; 4, valve cover; 41, indicator cover; 42, float rod; 5, guide plate; 6, valve stem; 61, valve core; 7, buffer gasket; 71, fixed gasket; 72, rubber sleeve; 73, toggle block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment, this embodiment provides a valve that is convenient for sealing detection, such as Figure 1 and Figure 2 As shown, it includes a valve body, one end of the valve body is set as an inlet end 3, the other end of the valve body is set as an outlet end 2, a sealing valve seat 1 is provided between the inlet end 3 and the outlet end 2, a flow hole connecting the inlet end 3 and the outlet end 2 is provided at the bottom end of the sealing valve seat 1, a valve cover 4 is detachably provided at the upper end of the sealing valve seat 1, and docking blocks are extended from the side walls of the valve cover 4 and the sealing valve seat 1, and threaded holes are provided on the docking blocks, and fastening bolts are threadedly connected between the threaded holes of the two opposite docking blocks, and the valve cover 4 and the sealing valve seat 1 are assembled by the fastening bolts.

[0025] The valve cover 4 is threaded with a valve stem 6, the end of the valve stem 6 passes through the valve cover 4 and enters the sealing valve seat 1, and the valve stem 6 is fixed with a valve core 61 that can seal the flow hole. The inlet end 3 is used for the fluid to enter the valve body, and the fluid enters the outlet end 2 through the flow hole and is finally discharged from the outlet end 2. By rotating the valve stem 6, the valve stem 6 rotates along the threaded hole on the valve cover 4, so as to adjust the valve core 61 away from and block the flow hole, thereby facilitating the control of whether the flow hole is blocked. A plurality of extension rods are symmetrically fixed on the upper end of the valve cover 4, and a guide plate 5 is fixed between the ends of the plurality of extension rods. The guide plate 5 is provided with a guide hole that is slidably plugged with the valve stem 6. By setting the guide plate 5, the stability of the rotation and lifting of the valve stem 6 is enhanced.

[0026] It also includes a seal that is sleeved on the outer wall of the valve stem 6. An enlarged sedimentation groove is recessed at the upper end of the sealing valve seat 1. The seal can be detachably installed in the enlarged sedimentation groove. The seal slides and fits against the outer wall of the valve stem 6. Once the seal is assembled with the valve stem 6, the seal will block the gap between the outer wall of the valve stem 6 and the inner wall of the enlarged sedimentation groove of the sealing valve seat 1. When the valve stem 6 is lifted up and down, it slides relative to the seal to ensure the sealing of the valve stem 6 during lifting and lowering adjustment.

[0027] The space between the inner wall of the valve cover 4 and the upper side of the seal in the enlarged sedimentation tank constitutes the detection space. Once the seal is severely worn due to long-term sliding between the seal and the valve stem 6, a gap is generated between the seal and the outer wall of the valve stem 6, causing the flow of fluid into the opening at the bottom end of the sealing valve seat 1, and then into the detection space after passing through the gap, causing fluid leakage.

[0028] like Figure 3 As shown, in order to solve the problem of how to quickly detect that the seal can no longer meet the sealing requirement, an indicator cover 41 is connected to the outer wall of the valve cover 4, and a sliding groove connected to the valve cover 4 is provided in the indicator cover 41, and an expansion portion is provided at the end of the sliding groove away from the valve cover 4, and a float rod 42 is slidably inserted in the sliding groove, one end of the float rod 42 extends into the expansion portion, and the other end of the float rod 42 extends into the valve cover 4. The float rod 42 is made of plastic, which is light and has buoyancy. Once fluid enters the detection space, the end of the float rod 42 located in the detection space is first impacted by the fluid, where the fluid is specifically a latex-like liquid, a mixed solution, etc. Once the detection space is filled with fluid, buoyancy that floats the float rod 42 will be generated, which will slide the float rod 42 along the sliding channel and increase the height in the expansion portion. As long as the workers see that the top of the float rod 42 rises along the height of the expansion portion of the indicator cover 41, they can determine that the seal can no longer meet the sealing requirement.

[0029] The end of the floating rod 42 located in the detection space is a hollow spherical structure, which is conducive to enhancing the buoyancy of the floating rod 42. The end of the floating rod 42 located in the expanded part of the indicator cover 41 is a conical structure, and the end of the conical structure is convenient for the staff to observe whether the floating rod 42 has obvious lifting and lowering movements.

[0030] The first embodiment of the seal: Figure 4As shown, the seal includes two fixed gaskets 71 and a plurality of buffer gaskets 7 arranged between the two fixed gaskets 71. A rubber sleeve 72 is provided between two adjacent buffer gaskets 7 and between the fixed gasket 71 and the buffer gasket 7. The fixed gasket 71 and the buffer gasket 7 are provided with a sleeve hole for sliding sleeve with the valve stem 6. The rubber sleeve 72 is an annular structure, and the radial side wall of the rubber sleeve 72 is bent toward the center of the rubber sleeve 72 to form an arc-shaped fitting portion. The outer diameter of the fixed gasket 71 and the buffer gasket 7 is the same as the inner diameter of the expanded sedimentation tank. The fixed gasket 71 and the buffer gasket 7 are placed in the expanded sedimentation tank. The outer walls of the fixed gasket 71 and the buffer gasket 7 are fitted with the inner wall of the expanded sedimentation tank without a gap. In the absence of external force, the fixed gasket 71 and the buffer gasket 7 will not easily detach from the expanded sedimentation tank. When the valve stem 6 rotates and rises and falls, the seal will not be driven to rise and fall synchronously, will not detach from the expanded sedimentation tank, and there will be no gap problem. In addition, the curved fitting portion of the rubber sleeve 72 can abut against the outer wall of the valve stem 6 , thereby improving the sealing performance of the valve stem 6 when rotating and lifting.

[0031] By providing a plurality of coaxially distributed rubber sleeves 72, the stability and strength of the assembly of the fixed gasket 71 and the buffer gasket 7 are ensured, and the deviation from the axial direction is not likely to occur, thereby causing the problem of poor sealing.

[0032] The second embodiment of the seal: Figure 5 and Figure 6 As shown, different from the first embodiment, the edge side wall of the upper fixed gasket 71 is extended upward to form an annular extension, and the outer wall of the annular extension is threadedly connected to the inner wall of the enlarged sedimentation tank, so that the multiple buffer gaskets 7 located between the two fixed gaskets 71 can be compressed, and the arc-shaped fitting part of the rubber sleeve 72 can be more closely fitted to the outer wall of the valve stem 6, thereby enhancing the sealing performance with the valve stem 6. At the same time, during the rotation and lifting process of the valve stem 6, it is not easy to rise and fall synchronously with the valve stem 6, which affects the sealing performance between the rubber sleeve 72 and the outer wall of the valve stem 6.

[0033] In addition, a toggle block 73 is provided on the inner wall of the annular extension portion. By providing the toggle block 73, the annular extension portion can be easily rotated to facilitate installation and later disassembly and replacement of the seal.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve for convenient sealing detection, comprising a valve body, wherein one end of the valve body is set as an inlet end (3), and the other end of the valve body is set as an outlet end (2), a sealing valve seat (1) is provided between the inlet end (3) and the outlet end (2), a flow hole connecting the inlet end (3) and the outlet end (2) is provided at the bottom end of the sealing valve seat (1), a valve cover (4) is detachably provided at the upper end of the sealing valve seat (1), a valve stem (6) is threadedly inserted on the valve cover (4), an end of the valve stem (6) passes through the valve cover (4) and enters into the sealing valve seat (1), and a valve core (61) capable of sealing the flow hole is fixed to the valve stem (6), characterized in that: It also includes a sealing member sleeved on the outer wall of the valve stem (6), the upper end of the sealing valve seat (1) is recessed with an enlarged sedimentation groove, the sealing member is detachably mounted in the enlarged sedimentation groove, the sealing member is slidably fitted with the outer wall of the valve stem (6), and blocks the gap between the valve stem (6) and the inner wall of the enlarged sedimentation groove of the sealing valve seat (1); The outer wall of the valve cover (4) is connected to an indicator cover (41), and a sliding groove connected to the valve cover (4) is provided in the indicator cover (41). An enlarged portion is provided at one end of the sliding groove away from the valve cover (4). A float rod (42) is slidably inserted in the sliding groove, and one end of the float rod (42) extends into the enlarged portion, and the other end of the float rod (42) extends into the valve cover (4). The space between the inner wall of the valve cover (4) and the upper side of the seal in the enlarged sedimentation tank constitutes a detection space.

2. The valve for facilitating sealing detection according to claim 1, characterized in that: The valve cover (4) and the side wall of the sealing valve seat (1) are both extended with docking blocks, the docking blocks are provided with threaded holes, and fastening bolts are threadedly connected between two opposite threaded holes of the docking blocks.

3. The valve for facilitating sealing detection according to claim 1, characterized in that: The sealing member comprises two fixed gaskets (71) and a plurality of buffer gaskets (7) arranged between the two fixed gaskets (71); a rubber sleeve (72) is arranged between two adjacent buffer gaskets (7) and between a fixed gasket (71) and a buffer gasket (7); and a sleeve hole for slidingly sleeved with a valve stem (6) is provided on the fixed gasket (71) and the buffer gasket (7).

4. The valve for facilitating sealing detection according to claim 3, characterized in that: The outer diameters of the fixed gasket (71) and the buffer gasket (7) are the same as the inner diameter of the enlarged sedimentation tank. The rubber sleeve (72) is an annular structure, and the radial side wall of the rubber sleeve (72) is bent toward the center of the rubber sleeve (72) to form an arc-shaped fitting portion.

5. The valve for facilitating sealing detection according to claim 3, characterized in that: The edge side wall of the upper fixed gasket (71) extends upward to form an annular extension portion, and the outer wall of the annular extension portion is threadedly connected to the inner wall of the enlarged sedimentation tank; The inner wall of the annular extension portion is provided with a toggle block (73).

6. The valve for facilitating sealing detection according to claim 1, characterized in that: A plurality of extension rods are symmetrically fixed to the upper end of the valve cover (4), a guide plate (5) is fixed between the ends of the plurality of extension rods, and the guide plate (5) is provided with a guide hole for slidingly plugging with the valve stem (6).

7. The valve for facilitating sealing detection according to claim 1, characterized in that: One end of the floating rod (42) located in the detection space is a hollow spherical structure; and one end of the floating rod (42) located in the expanded portion of the indicator cover (41) is a conical structure.

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