Sealing stop valve

Abstract

The utility model belongs to the technical field of stop valves, and particularly relates to a sealing stop valve which comprises a valve body, a valve core and a valve core. The valve rod is fixedly connected with a hand wheel; the limiting mechanism comprises limiting columns, a limiting disc and a fixing block, the limiting columns are fixedly connected to the upper surface of the valve body and located on the outer side of the valve rod, the limiting disc is arranged on the upper portions of the limiting columns and movably connected with the limiting columns, and the fixing block is fixedly connected to the outer surface of the valve rod; the limiting disc can limit rotation of the fixing block when the limiting column is sleeved with the limiting disc. According to the sealing stop valve, the limiting mechanism can limit the valve rod, when the valve rod needs to be fixed, the limiting disc is connected to the limiting column in a sleeved mode, rotation of the fixing block is limited through the limiting disc, the hand wheel is prevented from being rotated by mistake, and the safety of the stop valve is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of stop valves, in particular to a sealing stop valve. Background Art

[0002] The stop valve, also known as the gate valve, is a forced sealing valve. Therefore, when the valve is closed, pressure must be applied to the valve disc to force the sealing surface to prevent leakage. Its opening and closing parts are plug-shaped valve discs, the sealing surface is flat or conical, and the valve disc moves linearly along the center line of the fluid. When the medium enters the valve from below the valve disc, the resistance that the operating force needs to overcome is the friction between the valve stem and the packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve, so the diameter of the valve stem must be larger, otherwise the valve stem will bend. Under the action of the medium, this type of valve is also more tight. As an important fluid control device, the stop valve is widely used in various fields, providing important support and guarantee for industrial production and daily life.

[0003] The invention with application number CN201410694167.2 discloses a stop valve, including a valve body, a valve cover, a valve stem and a handle, a valve disc is arranged on the valve stem, a throttle plate is arranged vertically at the end of the valve disc, the throttle plate is connected to one end of the end of the valve disc close to the medium inflow channel, the axial length of the throttle plate is smaller than the diameter of the cross section of the medium inflow channel extending in the axial direction of the throttle plate; the throttle plate is an inverted cone cylinder, the dome surface of the inverted cone cylinder penetrates into the circular groove at the end of the valve disc, and the cone bottom tip of the inverted cone cylinder is a free end. The stop valve provided by the invention reduces the pressure of the medium on the valve disc during the valve closing process by adding components, reduces the damage of the valve disc due to excessive pressure, smoothly makes the valve disc engage and seal with the valve seat, prolongs the life of the valve disc, and improves the sealing performance, and has the advantages of simple structure, convenient manufacture, reliable use and strong practicality. The existing sealed stop valve is easy to be touched by mistake, resulting in accidental opening or closing of the stop valve. Utility Model Content

[0004] The utility model aims to solve the above-mentioned technical problems and provide a sealing stop valve for preventing a hand wheel from being turned by mistake.

[0005] In view of this, the utility model provides a sealed stop valve, comprising: a valve body, the valve body comprising an inlet pipe and an outlet pipe; a valve stem, the valve stem being fixedly connected with a handwheel; and also comprising: a limiting mechanism, the limiting mechanism comprising a limiting column, a limiting disk and a fixed block, a plurality of the limiting columns being fixedly connected to the upper surface of the valve body, the limiting columns being located on the outer side of the valve stem, the limiting disk being arranged on the upper part of the limiting column, the limiting disk being movably connected to the limiting column, the fixed block being fixedly connected to the outer surface of the valve stem, and the limiting disk can limit the rotation of the fixed block when it is sleeved on the limiting column; wherein, the limiting mechanism is arranged at the valve stem.

[0006] In this technical solution, the limiting mechanism can limit the valve stem. When the valve stem needs to be fixed, the limiting disk is sleeved on the limiting column. The limiting disk limits the rotation of the fixing block to prevent the handwheel from being turned by mistake, thereby increasing the safety of the stop valve.

[0007] In the above technical solution, further, the limiting mechanism also includes: a magnetic block, which is fixedly connected to the center of the lower surface of the handwheel, and the magnetic block can absorb the limiting disk; a fixing hole, which is arranged inside the limiting disk, and the shape of the fixing hole is a regular hexagon, and the fixing block cooperates with the fixing hole inside the limiting disk.

[0008] In the above technical solution, further, a filtering mechanism is provided at the water inlet pipe.

[0009] In the above technical scheme, further, the filtering mechanism includes: a filter screen, which is arranged at the water inlet pipe; a through port, which is opened at the bottom of the water inlet pipe, and the through port is arranged on the side of the filter screen away from the outlet pipe; a collecting box, which is fixedly connected to the outer wall of the water inlet pipe, and the collecting box is connected to the through port; an observation window, which is arranged on one side of the collecting box; a box door, which is hinged at the bottom end of the collecting box; a first connecting block, which is fixedly connected to one side of the box door, and a threaded rod is threadedly connected to the first connecting block; a second connecting block, which is fixedly connected to one side of the collecting box, and a groove is opened on the top of the second connecting block; a clamping block, which is rotatably connected to the top of the threaded rod through a bearing, and the clamping block is adapted to the groove; a handle, which is fixedly connected to the bottom end of the threaded rod.

[0010] In the above technical solution, further, a sealing gasket is provided on the top of the box door.

[0011] The beneficial effects of the utility model are:

[0012] 1. The limit mechanism can limit the valve stem. When the valve stem needs to be fixed, the limit disk is sleeved on the limit column. The limit disk limits the rotation of the fixed block to prevent the hand wheel from being turned by mistake, thereby increasing the safety of the stop valve.

[0013] 2. When the valve stem needs to be rotated, move the limiting disk upward so that it is adsorbed by the magnetic block, which facilitates the rotation of the valve stem. The setting of the fixing hole enables the fixing block to cooperate with the fixing hole inside the limiting disk to limit the fixing block.

[0014] 3. The filter screen filters the impurities in the water, and the collection box collects the filtered impurities. The setting of the observation window allows the user to easily check the impurities in the collection box and clean it in time. When cleaning is needed, turn the handle to drive the threaded rod to rotate. The rotation of the threaded rod drives the block to rise. When the block rises, the collection box and the door will slowly separate. When the door is opened, the collection box can be cleaned, and then the door is closed, the block is aligned with the groove, and the handle is turned in the opposite direction to drive the threaded rod to rotate. The rotation of the threaded rod drives the block to descend until the block is connected to the groove to fix the door.

[0015] 4. A sealing gasket is set on the top of the box door to enhance the sealing performance of the collection box. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 1 It is a schematic structural diagram of a specific implementation method of the utility model.

[0018] Figure 2 It is a structural schematic diagram of the limiting mechanism of the utility model.

[0019] Figure 3 It is a structural schematic diagram of the limiting disk of the utility model.

[0020] Figure 4 It is a structural schematic diagram of the filtering mechanism of the utility model.

[0021] Figure 5 It is a structural schematic diagram of the card block of the utility model.

[0022] The symbols in the figure are:

[0023] 1-valve body, 11-water inlet pipe, 12-water outlet pipe, 2-valve stem, 3-handwheel, 4-limiting mechanism, 41-limiting column, 42-limiting disk, 43-fixing block, 44-magnetic block, 45-fixing hole, 5-filtering mechanism, 51-filter screen, 52-through port, 53-collecting box, 54-observation window, 55-box door, 56-first connecting block, 57-threaded rod, 58-second connecting block, 59-groove, 510-block, 511-handle, 6-sealing gasket. DETAILED DESCRIPTION

[0024] 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 of 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.

[0025] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0026] Embodiment 1:

[0027] The embodiment of the present application provides a sealed stop valve, including: a valve body 1, the valve body 1 includes a water inlet pipe 11 and a water outlet pipe 12; a valve stem 2, the valve stem 2 is fixedly connected to a handwheel 3; and also includes: a limiting mechanism 4, the limiting mechanism 4 includes a limiting column 41, a limiting disk 42 and a fixed block 43, a plurality of limiting columns 41 are fixedly connected to the upper surface of the valve body 1, the limiting column 41 is located on the outer side of the valve stem 2, the limiting disk 42 is arranged on the upper part of the limiting column 41, the limiting disk 42 is movably connected to the limiting column 41, the fixed block 43 is fixedly connected to the outer surface of the valve stem 2, and the limiting disk 42 can limit the rotation of the fixed block 43 when it is sleeved on the limiting column 41; wherein, the limiting mechanism 4 is arranged at the valve stem 2.

[0028] In this embodiment, refer to Figure 1 and Figure 3 As shown, the limiting mechanism 4 can limit the valve stem 2. When the valve stem 2 needs to be fixed, the limiting disk 42 is sleeved on the limiting column 41. The limiting disk 42 limits the rotation of the fixing block 43 to prevent the hand wheel 3 from being turned by mistake, thereby increasing the safety of the stop valve.

[0029] Embodiment 2:

[0030] This embodiment provides a sealed stop valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and the limiting mechanism 4 also includes:

[0031] A magnetic block 44, which is fixedly connected to the center of the lower surface of the hand wheel 3, and the magnetic block 44 can attract the limiting plate 42;

[0032] The fixing hole 45 is disposed inside the limiting disk 42 . The fixing hole 45 is in the shape of a regular hexagon. The fixing block 43 cooperates with the fixing hole 45 inside the limiting disk 42 .

[0033] In this embodiment, refer to Figure 2 and Figure 3 As shown, when the valve stem 2 needs to be rotated, the limiting disk 42 is moved upward so that it is adsorbed by the magnetic block 44, which facilitates the rotation of the valve stem 2. The setting of the fixing hole 45 enables the fixing block 43 to cooperate with the fixing hole 45 inside the limiting disk 42 to limit the fixing block 43.

[0034] Embodiment 3:

[0035] This embodiment provides a sealed stop valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features: a filter mechanism 5 is provided at the water inlet pipe 11, and the filter mechanism 5 includes:

[0036] A filter screen 51, the filter screen 51 is arranged at the water inlet pipe 11;

[0037] A through opening 52 is provided at the bottom of the water inlet pipe 11 and is arranged on a side of the filter screen 51 away from the water outlet pipe 12;

[0038] A collecting box 53, the collecting box 53 is fixedly connected to the outer wall of the water inlet pipe 11, and the collecting box 53 is communicated with the through port 52;

[0039] An observation window 54, which is disposed on one side of the collection box 53;

[0040] A box door 55, the box door 55 is hinged at the bottom end of the collection box 53;

[0041] A first connecting block 56, the first connecting block 56 is fixedly connected to one side of the box door 55, and a threaded rod 57 is threadedly connected to the first connecting block 56;

[0042] A second connecting block 58, which is fixedly connected to one side of the collecting box 53, and a groove 59 is formed on the top of the second connecting block 58;

[0043] A clamping block 510, which is rotatably connected to the top of the threaded rod 57 through a bearing, and the clamping block 510 is adapted to the groove 59;

[0044] The handle 511 is fixedly connected to the bottom end of the threaded rod 57 .

[0045] In this embodiment, refer to Figure 4 and Figure 5 As shown, the filter 51 filters the impurities in the water, and the collection box 53 collects the filtered impurities. The setting of the observation window 54 allows the user to easily check the impurities in the collection box 53 and clean them in time. When cleaning is needed, the handle 511 is turned to drive the threaded rod 57 to rotate. The rotation of the threaded rod 57 drives the block 510 to rise. When the block 510 rises, the collection box 53 and the box door 55 will slowly separate. When the box door 55 is opened, the collection box 53 can be cleaned, and then the box door 55 is closed, the block 510 is aligned with the groove 59, and the handle 511 is turned in the opposite direction to drive the threaded rod 57 to rotate. The rotation of the threaded rod 57 drives the block 510 to descend until the block 510 is snapped into the groove 59, thereby fixing the box door 55.

[0046] Embodiment 4:

[0047] This embodiment provides a sealed stop valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features: a sealing gasket 6 is provided on the top of the box door 55.

[0048] In this embodiment, refer to Figure 4 and Figure 5 As shown, a sealing gasket 6 is provided on the top of the box door 55 to enhance the sealing performance of the collection box 53.

[0049] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A sealed stop valve, include: A valve body (1), the valve body (1) comprising a water inlet pipe (11) and a water outlet pipe (12); A valve stem (2), wherein the valve stem (2) is fixedly connected to a hand wheel (3); It is characterized by further comprising: A limiting mechanism (4), the limiting mechanism (4) comprising a limiting column (41), a limiting disk (42) and a fixing block (43), a plurality of the limiting columns (41) being fixedly connected to the upper surface of the valve body (1), the limiting columns (41) being located on the outer side of the valve stem (2), the limiting disk (42) being arranged on the upper part of the limiting column (41), the limiting disk (42) being movably connected to the limiting column (41), the fixing block (43) being fixedly connected to the outer surface of the valve stem (2), and the limiting disk (42) being sleeved on the limiting column (41) to limit the rotation of the fixing block (43); Wherein, the limiting mechanism (4) is arranged on the valve stem (2).

2. A sealed stop valve according to claim 1, It is characterized in that The limiting mechanism (4) further comprises: A magnetic attraction block (44), wherein the magnetic attraction block (44) is fixedly connected to the center of the lower surface of the hand wheel (3), and the magnetic attraction block (44) can attract the limiting disk (42); A fixing hole (45), wherein the fixing hole (45) is arranged inside the limiting disk (42), and the fixing hole (45) is in the shape of a regular hexagon, and the fixing block (43) cooperates with the fixing hole (45) inside the limiting disk (42).

3. A sealed stop valve according to claim 1, Features: The water inlet pipe (11) is provided with a filtering mechanism (5).

4. A sealed stop valve according to claim 3, It is characterized in that The filtering mechanism (5) comprises: A filter screen (51), wherein the filter screen (51) is arranged at the water inlet pipe (11); A through opening (52), the through opening (52) being opened at the bottom of the water inlet pipe (11), and the through opening (52) being arranged on a side of the filter screen (51) away from the water outlet pipe (12); A collecting box (53), the collecting box (53) being fixedly connected to the outer wall of the water inlet pipe (11), and the collecting box (53) being in communication with the through port (52); An observation window (54), wherein the observation window (54) is arranged on one side of the collection box (53); A box door (55), wherein the box door (55) is hinged at the bottom end of the collection box (53); A first connecting block (56), the first connecting block (56) being fixedly connected to one side of the cabinet door (55), and a threaded rod (57) being threadedly connected to the first connecting block (56); A second connecting block (58), the second connecting block (58) is fixedly connected to one side of the collecting box (53), and a groove (59) is formed on the top of the second connecting block (58); A clamping block (510), wherein the clamping block (510) is rotatably connected to the top of the threaded rod (57) via a bearing, and the clamping block (510) is adapted to the groove (59); A handle (511), wherein the handle (511) is fixedly connected to the bottom end of the threaded rod (57).

5. A sealed stop valve according to claim 4, Features: A sealing gasket (6) is provided on the top of the box door (55).

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