Stop valve convenient to maintain

Abstract

The utility model discloses a stop valve convenient to maintain, which belongs to the technical field of valves and comprises a stop valve body, a valve clack is arranged in the stop valve body, a plurality of hollow columns are mounted at the bottom of the valve clack, and first springs are arranged in the hollow columns. A movable column is connected to the end, away from the valve clack, of the first spring, a filter plate frame is connected to the end, away from the first spring, of the movable column, a filter plate used for filtering is arranged in the filter plate frame, a support is welded to the periphery of the valve clack, and a plurality of baffles and fixing rings are fixedly installed at the end, away from the movable column, of the filter plate frame. Rotating shafts are connected to the side faces of the multiple baffles, rotating columns are connected to the ends, away from the baffles, of the rotating shafts, second springs are arranged on the peripheries of the rotating shafts, locking plates are installed on the peripheries of the rotating columns, and the stop valve is convenient to maintain and capable of reducing the pipeline blocking risk and protecting precise parts of downstream equipment.

Description

Technical Field

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

[0002] Globe valves are commonly used as shutoff valves in various fluid delivery pipeline systems. In actual use, due to the long-term exposure to fluid pressure, erosion, and corrosion from the media, their internal seals, discs, and other components are easily damaged, requiring regular maintenance and replacement. Existing, easy-to-maintain globe valves can meet basic maintenance and shutoff requirements, but their filtering effect is weak, increasing the risk of pipeline blockage and damaging delicate components in downstream equipment.

[0003] After searching, Chinese patent documents (authorization announcement number CN217003135U) show that the utility model relates to the technical field of stop valves, specifically a stop valve that is easy to maintain, including a main body, the top end of the main body is fixedly connected to a mounting base block, the internal movably connected to a screw switch of the mounting base block, and the top end of the mounting base block is movably connected to a fixed protective mechanism. The utility model is convenient for closing the main body during the process of rotating the screw switch and moving the screw switch downward, and at the same time, the telescopic sleeve is pressed downward to compress the contraction spring. When the main body is opened, the screw switch moves upward, and the telescopic sleeve can move upward under the action of the contraction spring, so that the telescopic sleeve can continuously wrap around the screw of the screw switch to protect the screw switch and prevent the screw switch from rusting. It is easy to use, and the stop valve can meet basic maintenance and stop functions, but the filtering effect is weak, resulting in an increased risk of pipeline blockage and damage to precision components of downstream equipment. Utility Model Content

[0004] The purpose of the utility model is to provide a stop valve that is easy to maintain, so as to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a stop valve that is easy to maintain, comprising a stop valve body, wherein the stop valve body is provided with a valve disc, and a plurality of hollow columns are installed at the bottom of the valve disc, and a first spring is provided inside the plurality of hollow columns, and one end of the first spring is connected to a movable column at a distance from the valve disc, and one end of the movable column is connected to a filter plate holder at a distance from the first spring, and a filter plate for filtering is provided inside the filter plate holder, and a bracket is welded on the outer periphery of the valve disc, and a plurality of baffles and a fixing ring are fixedly installed on the end of the filter plate holder away from the moving column, and the side surfaces of the plurality of baffles are connected to a rotating shaft, and the end of the rotating shaft away from the baffle is connected to the rotating column, and a second spring is provided on the outer periphery of the rotating shaft, and the two ends of the second spring are respectively connected to the baffle and the fixing ring, and a locking plate is installed on the outer periphery of the rotating column.

[0006] Preferably, both ends of the stop valve body are connected with a liquid inlet and a liquid outlet respectively, and a valve seat is installed inside the stop valve body.

[0007] Preferably, the periphery of the stop valve body is connected with a connecting pipe, a valve cover is installed at one end of the connecting pipe away from the stop valve body, and a guide block is connected to the top of the valve cover.

[0008] Preferably, a threaded valve stem is connected to the top of the valve disc, and a hand wheel is installed at one end of the threaded valve stem away from the valve disc.

[0009] Preferably, the outer periphery of the threaded valve stem is meshedly connected with a moving block, and a guide rod is installed on the side of the moving block.

[0010] Preferably, a sealing gasket is installed on the outer periphery of the valve disc for sealing.

[0011] Compared with the prior art, the technical effects and advantages of this utility model are:

[0012] The stop valve which is easy to maintain benefits from the structure of the first spring and the filter plate. Liquid enters from the liquid inlet and flows out from the liquid outlet through the gap between the valve seat and the valve disc. The liquid contacts the filter plate, and the filter plate filters the impurities in the liquid. After a period of time, the permeability of the filter plate weakens, and the liquid squeezes the filter plate, the filter plate frame and the movable column. The movable column squeezes the first spring. Due to the deformation of the first spring, the gap between the filter plate, the filter plate frame and the valve seat is adjusted to avoid clogging of the pipeline due to clogging of the filter plate. When the filter plate needs to be replaced, the valve cover is opened, and the filter plate is taken out for replacement. Compared with the traditional stop valve with weak filtering effect and inconvenient maintenance, this structure can reduce the risk of pipeline clogging and protect the precision components of downstream equipment.

[0013] The convenient maintenance stop valve, thanks to the structure of the locking plate, under the action of the second spring, the rotating column rotates in the fixed ring, the locking plate drives the locking plate to contact the newly replaced filter plate in the filter plate frame, prevents the filter plate from falling off from the filter plate frame, and guarantees the filtering effect. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0015] Figure 1 It is a structural schematic view of the present application;

[0016] Figure 2 It is a sectional view of the present application;

[0017] Figure 3 It is a schematic view of the internal structure of the present application;

[0018] Figure 4 It is a schematic view of the internal structure of the present application; Figure 3 It is an enlarged view of A in the present application.

[0019] Explanation of reference signs:

[0020] In the drawing: 1, stop valve body; 101, liquid inlet; 102, liquid outlet; 103, hand wheel; 104, threaded valve rod; 105, moving block; 106, guide rod; 107, guide block; 108, valve cover; 109, connecting pipe; 2, valve clack; 201, hollow column; 202, first spring; 203, moving column; 204, filter plate frame; 205, filter plate; 3, baffle; 301, fixed ring; 302, rotating column; 303, locking plate; 304, rotating shaft; 305, second spring; 4, valve seat; 401, support. DETAILED DESCRIPTION

[0021] In the following description, a large number of specific details are given in order to provide a more thorough understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present application, some technical features known in the art are not described.

[0022] The connection mode can adopt existing modes such as bonding, welding, bolt connection, etc., and the actual needs are accurate.

[0023] For example, Figures 1 to 4The stop valve shown in the figure is easy to maintain, including a stop valve body 1. The stop valve body 1 is the main part of the stop valve, which provides installation space for other components in the valve and bears the pressure of the fluid in the pipeline. Common materials include cast iron, cast steel, stainless steel and copper alloy, etc., to prevent the stop valve body 1 from being corroded and ensure the purity of the fluid. A valve disc 2 is provided inside the stop valve body 1, and a plurality of hollow columns 201 are installed at the bottom of the valve disc 2. A first spring 20 is provided inside each of the plurality of hollow columns 201. 2. The end of the first spring 202 away from the valve disc 2 is connected to the movable column 203, and the end of the movable column 203 away from the first spring 202 is connected to the filter plate frame 204. The filter plate frame 204 is provided with a filter plate 205 for filtering. A bracket 401 is welded to the outer periphery of the valve disc 2. The end of the filter plate frame 204 away from the movable column 203 is fixedly installed with multiple baffles 3 and a fixing ring 301. The sides of the multiple baffles 3 are all connected to the rotating shaft 304. The end of the rotating shaft 304 away from the baffle 3 is connected to the rotating column 302. The outer periphery of the rotating shaft 304 is provided with a second spring 305, and the two ends of the second spring 305 are respectively connected to the baffle 3 and the fixing ring 301. The outer periphery of the rotating column 302 is installed with a locking plate 303. The liquid contacts the filter plate 205, and the filter plate 205 filters the impurities in the liquid. After a period of time, the permeability of the filter plate 205 becomes weaker, and the liquid squeezes the filter plate 205, the filter plate frame 204 and the moving column 203. The moving column 203 squeezes the first spring 202. Due to the deformation of the first spring 202, Adjust the gap between the filter plate 205, the filter plate holder 204 and the valve seat 4 to avoid clogging of the pipeline due to clogging of the filter plate 205. When the filter plate 205 needs to be replaced, open the valve cover 108, take out the filter plate 205 for replacement, and due to the action of the second spring 305, the rotating column 302 rotates in the fixing ring 301, and the locking plate 303 drives the locking plate 303 to contact the newly replaced filter plate 205 in the filter plate holder 204, thereby preventing the filter plate 205 from falling off from the filter plate holder 204 and ensuring the filtering effect.

[0024] The two ends of the stop valve body 1 are respectively connected with a liquid inlet 101 and a liquid outlet 102. The liquid inlet 101 and the liquid outlet 102 are connected to the pipeline that needs to be cut off. The inside of the stop valve body 1 is equipped with a valve seat 4. The periphery of the stop valve body 1 is connected with a connecting pipe 109. The end of the connecting pipe 109 away from the stop valve body 1 is equipped with a valve cover 108. The valve cover 108 is installed on the top of the valve body. The valve cover 108 also protects the internal components from the influence of the external environment. It also facilitates the maintenance of the interior of the valve. The top of the valve cover 108 is connected with a guide block 107. If there is no need to cut off, rotate the handwheel 103 in the opposite direction, and the threaded valve stem 104 drives the valve disc 2 to separate from the valve seat 4. The liquid enters from the liquid inlet 101 and flows out from the liquid outlet 102 through the gap between the valve seat 4 and the valve disc 2.

[0025] The top of the valve disc 2 is connected to a threaded valve stem 104, and a handwheel 103 is installed at the end of the threaded valve stem 104 away from the valve disc 2. The outer periphery of the threaded valve stem 104 is meshed and connected with a moving block 105, and a guide rod 106 is installed on the side of the moving block 105. A sealing gasket for sealing is installed on the outer periphery of the valve disc 2. When it is necessary to cut off the flow of liquid, turn the handwheel 103, and the handwheel 103 drives the threaded valve stem 104 to rotate. Due to the action of the moving block 105, the threaded valve stem 104 drives the valve disc 2 to move toward the valve seat 4. Finally, the valve disc 2 and the valve seat 4 are completely contacted and sealed, thereby cutting off the liquid entering the liquid inlet 101.

[0026] How it works

[0027] When using this stop valve which is easy to maintain, first connect the liquid inlet 101 and the liquid outlet 102 to the pipes that need to be cut off. If it is necessary to cut off the flow of liquid, turn the hand wheel 103, and the hand wheel 103 drives the threaded valve stem 104 to rotate. Due to the action of the moving block 105, the threaded valve stem 104 drives the valve disc 2 to move toward the valve seat 4. Finally, the valve disc 2 and the valve seat 4 are completely in contact and sealed, and the liquid entering the liquid inlet 101 is cut off. If it is not necessary to cut off, turn the hand wheel 103 in the opposite direction, and the threaded valve stem 104 drives the valve disc 2 to separate from the valve seat 4. The liquid enters from the liquid inlet 101, flows out from the liquid outlet 102 through the gap between the valve seat 4 and the valve disc 2, and contacts the filter plate 205, which filters the impurities in the liquid. After a period of time, the permeability of the filter plate 205 becomes weaker, and the liquid squeezes the filter plate 205, the filter plate frame 204 and the movable column 203. The movable column 203 squeezes the first spring 202. Due to the deformation of the first spring 202, the gap between the filter plate 205, the filter plate frame 204 and the valve seat 4 is adjusted to avoid blockage of the pipeline due to blockage of the filter plate 205. When the filter plate 205 needs to be replaced, the valve cover 108 is opened, and the filter plate 205 is taken out for replacement. Due to the action of the second spring 305, the rotating column 302 rotates in the fixing ring 301, and the locking plate 303 drives the locking plate 303 to contact the newly replaced filter plate 205 in the filter plate frame 204, preventing the filter plate 205 from falling off from the filter plate frame 204, thereby ensuring the filtering effect.

[0028] It should be noted that, in this document, relational terms such as one and two are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stop valve that is easy to maintain, comprising a stop valve body (1), characterized in that: A valve disc (2) is provided inside the stop valve body (1), a plurality of hollow columns (201) are installed at the bottom of the valve disc (2), a first spring (202) is provided inside each of the plurality of hollow columns (201), a movable column (203) is connected to one end of the first spring (202) away from the valve disc (2), a filter plate frame (204) is connected to one end of the movable column (203) away from the first spring (202), a filter plate (205) for filtering is provided inside the filter plate frame (204), and a bracket (205) is welded to the outer periphery of the valve disc (2). 401), a plurality of baffles (3) and a fixing ring (301) are fixedly installed on one end of the filter plate frame (204) away from the movable column (203), the sides of the plurality of baffles (3) are connected to a rotating shaft (304), the end of the rotating shaft (304) away from the baffle (3) is connected to a rotating column (302), a second spring (305) is provided on the periphery of the rotating shaft (304), the two ends of the second spring (305) are respectively connected to the baffle (3) and the fixing ring (301), and a locking plate (303) is installed on the periphery of the rotating column (302).

2. A stop valve easy to maintain according to claim 1, characterized in that: The two ends of the stop valve body (1) are respectively connected with a liquid inlet (101) and a liquid outlet (102), and a valve seat (4) is installed inside the stop valve body (1).

3. A maintenance-friendly stop valve according to claim 2, characterized in that: The outer periphery of the stop valve body (1) is connected to a connecting pipe (109), and a valve cover (108) is installed at one end of the connecting pipe (109) away from the stop valve body (1), and a guide block (107) is connected to the top of the valve cover (108).

4. The cut-off valve easy to maintain according to claim 1, characterized in that: The top of the valve disc (2) is connected to a threaded valve stem (104), and an end of the threaded valve stem (104) away from the valve disc (2) is installed with a hand wheel (103).

5. The cut-off valve easy to maintain according to claim 4, characterized in that: The outer periphery of the threaded valve stem (104) is meshedly connected with a moving block (105), and a guide rod (106) is installed on the side of the moving block (105).

6. The cut-off valve easy to maintain according to claim 3, characterized in that: A sealing gasket is installed on the outer periphery of the valve flap (2) for sealing.

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