Micro-resistance slow-closing type check valve

Abstract

The utility model discloses a micro-resistance slow-closing type check valve, which belongs to the technical field of check valves, and comprises a valve body, lantern rings are symmetrically sleeved at the end parts of two sides of the valve body, the lantern rings are in sliding connection with the valve body, bottom plates mutually attached to the tail end of the valve body are fixed at the tail ends of the lantern rings, and limiting sleeves are fixed at the peripheries of the bottom plates; an operator can conveniently penetrate a plurality of sets of bolts through mounting holes formed in the periphery of the valve body and the periphery of the pipeline at a time, when the operator installs the valve body and the pipeline for the first time, the operator needs to penetrate the bolts through flange connectors at the joint of the valve body and the pipeline one by one, and when the valve body and the pipeline are installed or disassembled later, the bolts are not needed to penetrate through the flange connectors. An operator does not need to take out bolts from a valve body and a pipeline one by one, the convenience of installing the bolts by the operator is improved, meanwhile, a fixing block penetrates through a limiting sleeve and a sealing plate to be fixed in the limiting sleeve, and therefore the operator can conveniently and stably fix the bolts in the limiting sleeve, and the stability of the bolts in the using process is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of control valves, and in particular relates to a micro-resistance slow-closing check valve. Background Art

[0002] The micro-resistance slow closing check valve is a valve used in pipeline systems, mainly used to prevent the backflow of media and limit the occurrence of water hammer. It automatically opens and closes the valve disc by controlling the flow rate and head of the medium at the water inlet, thereby allowing the medium to pass or preventing the medium from flowing back. The micro-resistance slow closing check valve is suitable for drainage pipes of media such as clean water, sewage, and seawater. Therefore, it can be seen that the existing control valves basically meet people's practical needs, but the following problems still exist.

[0003] When the operator uses the micro-resistance slow closing check valve, the operator aligns the pipeline through which the medium flows with the flange interface of the micro-resistance slow closing check valve, and then the operator passes the bolts through the flange interface of the micro-resistance slow closing check valve and the flange interface of the pipeline, and then the nuts are threadedly matched with the bolts to connect the micro-resistance slow closing check valve and the pipeline together. However, when using bolts and nuts to install the pipeline and the micro-resistance slow closing check valve, the operator may need to pass several groups of bolts through the mounting holes opened on the flange interface. Since there are many mounting holes opened on the flange interface, it may be more complicated for the operator to install the micro-resistance slow closing check valve and the pipeline. Moreover, when the operator inspects or repairs the micro-resistance slow closing check valve, the operator may remove the bolts from the flange interface where the micro-resistance slow closing check valve and the pipeline are connected each time. Since several groups of bolts need to be pulled each time, it may be more complicated for the operator to install the micro-resistance slow closing check valve and the pipeline. For this reason, we propose a micro-resistance slow closing check valve. Utility Model Content

[0004] The utility model provides a micro-resistance slow-closing check valve, which drives a sleeve ring to slide on the surface of a valve body through a bottom plate, so that an operator can pull several groups of bolts at the same time to remove the bolts from mounting holes opened on a flange interface arranged at the end of the valve body, thereby improving the convenience of the operator in pulling the bolts.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a micro-resistance slow-closing check valve, comprising a valve body, wherein the two end portions of the valve body are symmetrically provided with rings, and the rings are slidably connected to the valve body, and the ends of the rings are fixed with bottom plates that fit the ends of the valve body, and the bottom plates are fixed with limiting sleeves all around.

[0006] Furthermore, a sealing plate is inserted in the middle of the limit sleeve, and a spring groove is opened in the middle of the sealing plate. A second spring and a fixed block are respectively arranged inside the spring groove. The two groups of fixed blocks are abutted against the second spring arranged in the spring groove. The ends of the fixed blocks pass through the limit sleeve and the spring groove, and the ends of the fixed blocks are fixed with a handle passing through the spring groove.

[0007] Furthermore, a slider is fixed on one side of the ring and the valve body that fit each other, and the surface of the slider is sleeved with a slide groove opened on the valve body, a slide rod fixed on the inner wall of the slide groove passes through the middle of the slider, and the surface of the slide rod is sleeved with a first spring, and the two side ends of the first spring are respectively abutted between the surface of the slider and the inner wall of the slide groove.

[0008] Furthermore, the slide bars are all configured to be cylindrical, and the cylindrical shape of the slide bars matches the circular through hole opened in the middle of the slider.

[0009] Furthermore, the handles are all configured to be "L" shaped, and the surfaces of the handles are all provided with a plurality of groups of wave-shaped grooves.

[0010] Furthermore, the sealing plates are all configured as hexagonal blocks, the limiting sleeves are all configured as hexagonal grooves, and the hexagonal grooves of the limiting sleeves match the hexagonal blocks of the sealing plates.

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

[0012] 1. The micro-resistance slow closing check valve is provided with a base plate, a collar and a limit sleeve. After several groups of bolts are passed through the limit sleeve, the operator installs the several groups of bolts on the base plate, and then the operator pulls the base plate. The base plate drives the collar to slide on the surface of the valve body, so that the operator can pull several groups of bolts to move at the same time, which is convenient for the operator to pass several groups of bolts through the installation holes opened around the valve body and the pipeline at one time. When the operator installs the valve body and the pipeline for the first time, the operator needs to pass the bolts one by one through the flange interface where the valve body and the pipeline are connected to each other. When the valve body and the pipeline are installed or disassembled later, the operator is no longer required to remove the bolts from the valve body and the pipeline one by one, which improves the convenience of the operator to install the bolts.

[0013] 2. The micro-resistance slow-closing check valve is provided with a fixed block, a sealing plate and a spring groove. When the operator presses the fixed block, the fixed block slides in the spring groove, so that the fixed block enters the spring groove. Then the operator moves the sealing plate, and the sealing plate is inserted into the limit sleeve. The second spring elastically deforms and recovers, and the second spring pushes the fixed block to move, so that the fixed block passes through the limit sleeve, and the sealing plate is fixed in the limit sleeve, so that the operator can stably fix the bolt in the limit sleeve, thereby improving the stability of the bolt when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0015] Figure 2 This is a side view cross-sectional structural diagram of the utility model

[0016] Figure 3 For the utility model Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0017] Figure 4 For the utility model Figure 1 A schematic diagram of the enlarged structure at B in the middle;

[0018] Figure 5 For the utility model Figure 2 Schematic diagram of the enlarged structure at point C in the middle.

[0019] In the figure:

[0020] 1. Valve body; 2. Sealing plate; 3. Slide groove; 4. Slider; 5. Slide rod; 6. Bottom plate; 7. First spring; 8. Ring; 9. Limit sleeve; 10. Fixed block; 11. Second spring; 12. Spring groove; 13. Pull handle. DETAILED DESCRIPTION

[0021] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0022] Example:

[0023] See also Figure 1 - Figure 5 , a micro-resistance slow-closing check valve, comprising a valve body 1, with collars 8 symmetrically sleeved on both side ends of the valve body 1, and the collars 8 are slidably connected to the valve body 1, and the ends of the collars 8 are fixed with bottom plates 6 that fit the end of the valve body 1, and limiting sleeves 9 are fixed around the bottom plate 6. When the operator separates the valve body 1 from the pipeline, the operator removes the nut from the bolt, and the operator pulls the bottom plate 6, and the bottom plate 6 drives the collar 8 to slide on the surface of the valve body 1, so that the bottom plate 6 drives the bolt to move through the limiting sleeve 9, and the bolt is moved out of the mounting hole opened on the flange interface set at the end of the valve body 1, which is convenient for the operator to pull several groups of bolts at the same time to move, and the operator no longer needs to remove the bolts from the valve body 1 one by one, thereby improving the convenience of the operator in taking the bolts.

[0024] In other embodiments, a sealing plate 2 is inserted into the middle of the limiting sleeve 9, and a spring groove 12 is opened in the middle of the sealing plate 2, and a second spring 11 and a fixing block 10 are respectively arranged inside the spring groove 12, and the second spring 11 arranged in the spring groove 12 is abutted between the two groups of fixing blocks 10, and the ends of the fixing blocks 10 all penetrate the limiting sleeve 9 and the spring groove 12, and the ends of the fixing blocks 10 are fixed with a handle 13 passing through the spring groove 12, and the handle 13 is set to be "L" shaped, and a plurality of groups of wavy grooves are opened on the surface of the handle 13. When the operator inserts the bolt into the limiting sleeve 9, the operator first presses the handle 1 3. When the operator pulls the handle 13, since the handle 13 has a plurality of wave-shaped grooves on its surface, after the operator presses his hand on the handle 13, the plurality of wave-shaped grooves on its surface increase the friction of the operator's hand on the handle 13, thereby improving the stability of the operator's pressing on the handle 13. When the operator presses the handle 13, the handle 13 drives the fixed block 10 to slide in the spring groove 12. After the fixed block 10 slides in the spring groove 12, the fixed block 10 squeezes the second spring 11, causing the second spring 11 to undergo elastic deformation, and the second spring 11 After the elastic deformation occurs, the second spring 11 avoids the fixed block 10, so that the fixed block 10 enters the spring groove 12. The fixed block 10 enters the spring groove 12, the fixed block 10 avoids the limit sleeve 9, and the sealing plate 2 is inserted into the limit sleeve 9. When the sealing plate 2 is inserted into the limit sleeve 9, the operator releases the handle 13, and the handle 13 no longer squeezes the second spring 11 through the fixed block 10. The elastic deformation of the second spring 11 is restored, and the second spring 11 pushes the fixed block 10 to move, so that the fixed block 10 is removed from the spring groove 12, and the fixed block 10 is inserted on the surface of the limit sleeve 9. The through hole opened on the surface, and because the handle 13 is set to be "L" shaped, when the sealing plate 2 drives the fixed block 10 to move through the spring groove 12, and the fixed block 10 drives the handle 13 to move, the handle 13 is moved to the opening of the limiting sleeve 9, and the bent corner set to be "L" shape abuts against the opening of the limiting sleeve 9, which is convenient for limiting the position of the sealing plate 2 in the limiting sleeve 9 and facilitating the positioning of the sealing plate 2. By fixing the sealing plate 2 in the limiting sleeve 9, the sealing plate 2 closes the limiting sleeve 9 to prevent the sealing plate 2 inserted in the limiting sleeve 9 from falling off from the limiting sleeve 9, thereby improving the stability of the bolt installed in the limiting sleeve 9.

[0025] In other embodiments, a slider 4 is fixed on one side of the collar 8 and the valve body 1 that fit each other, and the surface of the slider 4 is sleeved with a slide groove 3 opened on the valve body 1, and a slide rod 5 fixed on the inner wall of the slide groove 3 passes through the middle of the slider 4, and the surface of the slide rod 5 is sleeved with a first spring 7, and the two side ends of the first spring 7 respectively abut between the surface of the slider 4 and the inner wall of the slide groove 3, and the slide rod 5 is set to a cylindrical shape, and the cylindrical shape of the slide rod 5 matches the circular through hole opened in the middle of the slider 4. When the operator pulls the bottom plate 6, the bottom plate 6 drives the slider 4 to slide in the slide groove 3 through the collar 8. When the slider 4 slides in the slide groove 3, since the circular through hole opened in the middle of the slider 4 matches the cylindrical shape of the slide rod 5, when the circular through hole opened in the middle of the slider 4 slides on the surface of the slide rod 5, the surface of the slide rod 5 and the inner wall of the slider 4 The first spring 7 is pressed against the first spring 7 to elastically deform the slider 4, and the first spring 7 avoids the slider 4 after the first spring 7 is elastically deformed, so that the collar 8 slides on the surface of the valve body 1, and the collar 8 drives the slider 4 to slide in the collar 3 when the collar 8 slides on the surface of the valve body 1, so that the slider 4 and the collar 3 pull the collar 8 to move, so as to prevent the collar 8 from rotating on the surface of the valve body 1 at will when the collar 8 slides on the surface of the valve body 1, and to prevent the limit sleeve 9 fixed on the surface of the bottom plate 6 from being offset from the mounting hole opened on the valve body 1 when the collar 8 slides on the surface of the valve body 1, so as to improve the stability of the bottom plate 6 driving the bolt to be inserted into the threaded hole opened on the flange interface of the valve body 1.

[0026] In other embodiments, the sealing plates 2 are all configured as hexagonal blocks, the limiting sleeves 9 are all configured as hexagonal grooves, and the hexagonal grooves provided by the limiting sleeves 9 match the hexagonal blocks provided by the sealing plates 2. The hexagons provided by the sealing plates 2 match the hexagonal grooves provided by the limiting sleeves 9. When the sealing plates 2 are inserted into the limiting sleeves 9, the surfaces of the hexagonal blocks provided by the sealing plates 2 fit the inner walls of the hexagonal grooves provided by the limiting sleeves 9, thereby improving the stability of the sealing plates 2 inserted into the limiting sleeves 9.

[0027] Although the 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 micro-resistance slow-closing check valve, comprising a valve body (1), characterized in that: The valve body (1) is symmetrically sleeved with sleeve rings (8) at both end portions, and the sleeve rings (8) are slidably connected to the valve body (1). The ends of the sleeve rings (8) are fixed with bottom plates (6) that fit the ends of the valve body (1), and the bottom plates (6) are fixed with limiting sleeves (9) around them.

2. A micro-resistance slow closing check valve according to claim 1, characterized in that: A sealing plate (2) is inserted into the middle of the limiting sleeve (9), and a spring groove (12) is opened in the middle of the sealing plate (2). A second spring (11) and a fixing block (10) are respectively arranged inside the spring groove (12). The two groups of fixing blocks (10) are abutted against a second spring (11) arranged in the spring groove (12). The ends of the fixing blocks (10) pass through the limiting sleeve (9) and the spring groove (12), and the ends of the fixing blocks (10) are fixed with a handle (13) passing through the spring groove (12).

3. A micro-resistance slow closing check valve according to claim 1, characterized in that: A slider (4) is fixed on one side of the collar (8) and the valve body (1) that are in contact with each other, and the surface of the slider (4) is sleeved with a slide groove (3) provided on the valve body (1), and a slide rod (5) fixed on the inner wall of the slide groove (3) passes through the middle of the slider (4), and a first spring (7) is sleeved on the surface of the slide rod (5), and the two side ends of the first spring (7) are respectively abutted between the surface of the slider (4) and the inner wall of the slide groove (3).

4. A micro-resistance slow closing check valve according to claim 3, characterized in that: The slide bars (5) are all configured to be cylindrical, and the cylindrical shape of the slide bars (5) matches the circular through hole opened in the middle of the slide block (4).

5. A micro-resistance slow closing check valve according to claim 2, characterized in that: The handles (13) are all configured to be L-shaped, and a plurality of groups of wave-shaped grooves are formed on the surface of the handles (13).

6. A micro-resistance slow closing check valve according to claim 2, characterized in that: The sealing plates (2) are all configured as hexagonal blocks, the limiting sleeves (9) are all configured as hexagonal grooves, and the hexagonal grooves of the limiting sleeves (9) match the hexagonal blocks of the sealing plates (2).

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