Four-way plug valve

Abstract

The utility model discloses a four-way plug valve, which belongs to the technical field of plug valves and comprises a valve casing, a rotating component and a valve rod, a plug cock used for switching channels is mounted in the valve casing, four valve ports communicated with the inside are fixedly mounted at the outer end of the valve casing, the rotating component is connected with the plug cock through the valve rod, and the valve rod is connected with the valve casing. A channel and the flow in the cock can be adjusted by rotating the rotating assembly, a plurality of second limiting grooves are formed in the outer end of the limiting disc, corresponding angle scale values are arranged beside the second limiting grooves, and when the rotating assembly is rotated, limiting rods on second rotating rods are clamped into the corresponding second limiting grooves by observing the scale values, so that the cock can be adjusted. And meanwhile, the limiting block on the limiting rod is clamped into the groove and is matched with the limiting rod to form limiting, so that the cock is not prone to rotating after being touched by mistake, and the stability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plug valve, more particularly to a four-way plug valve. BACKGROUND

[0002] Plug valve is a commonly used cut-off valve, which controls the on-off or flow regulation of fluid by rotating the valve core. Its core component is a tapered or cylindrical plug (valve core) with a passage. It can be fully opened or closed by rotating 90°, which is simple and fast to operate. The plug (valve core) is usually tapered or cylindrical with a through hole in the center. When rotating, the through hole is aligned with the valve passage (open) or perpendicular (closed).

[0003] Chinese patent authorization announcement number: CN217633962U provides a plug valve convenient to open and close. The first sealing disc, the second sealing disc and the third sealing disc of the auxiliary assembly wrap the valve core and the handle frame of the handle assembly exposed outside the valve body, reducing the contact between the valve core and the handle frame and the external environment, and reducing the corrosion rate of the valve core or the handle frame. On the one hand, it prolongs the service life of the plug valve, and on the other hand, it ensures the smooth operation of the handle assembly. When the plug valve has medium passing through, the spring in the auxiliary assembly can buffer the vibration generated by the medium impacting the valve body, ensuring the stability of the handle assembly and avoiding the vibration causing the handle assembly to deviate, resulting in the deviation of the valve core in the valve body and affecting the sealing performance of the plug valve.

[0004] Plug valves are also used to regulate flow. The above-mentioned scheme cannot accurately control the opening degree when regulating flow, has no scale or position feedback, and the operator cannot accurately determine the current opening degree. Only experience can be used for adjustment. In the case of precise flow control, it will cause inconvenience in use.

[0005] Therefore, a four-way plug valve is proposed to solve the above problems. Utility model content

[0006] 1. Technical problem to be solved

[0007] The utility model provides a four-way plug valve, which can improve the problems in the related art: unable to accurately control the opening degree, no scale or position feedback, the operator cannot accurately determine the current opening degree, only experience can be used for adjustment, and in the case of precise flow control, it will cause inconvenience in use.

[0008] 2. Technical scheme

[0009] To solve the above problems, the utility model adopts the following technical scheme.

[0010] The embodiment of the application provides a four-way cock valve, which comprises a valve shell, a rotating assembly and a valve rod, the valve shell is internally provided with a cock for switching channels, four valve ports are fixedly arranged at the outer end of the valve shell and are in communication with the inside, the rotating assembly comprises a rotating rod II and a limiting disc, the bottom end of the rotating rod II is fixedly provided with a limiting rod, the limiting disc comprises a disc body, equidistantly distributed limiting grooves II are formed in the outer end of the disc body, scale values corresponding to the limiting grooves II are engraved on the outer surface of the disc body, the valve rod is used for connecting the rotating assembly and the cock, a sealing assembly is arranged at the outer end of the valve rod, the rotating assembly drives the cock to rotate to the angle value indicated by the scale value through the valve rod, and the rotating rod II is limited by being clamped into the inside of the limiting grooves II through the limiting rod.

[0011] The technical scheme described above in the embodiment of the application has at least the following technical effects:

[0012] The rotating assembly is connected with the cock through the valve rod, the channel in the cock and the flow size can be adjusted by rotating the rotating assembly, a plurality of limiting grooves II are formed in the outer end of the limiting disc, corresponding angle scale values are arranged beside the limiting grooves II, when the rotating assembly is rotated, the limiting rod on the rotating rod II is clamped into the corresponding limiting groove II by observing the scale value, so that the rotation angle of the cock is visualized, the precision of adjusting the flow is improved, meanwhile, the limiting block on the limiting rod is clamped into the groove, and the limiting is formed in cooperation with the limiting rod, so that the cock is not easy to be rotated by mistake after being touched, and the stability is improved.

[0013] In some embodiments, the cock comprises a valve core, a bushing is arranged at the outer end of the valve core, the outer surface of the valve core is in abutment with the inside of the bushing to form a seal, the bushing is arranged on the inside of the valve shell, a sealing ring is arranged at the bottom end of the inside of the valve shell and is in abutment with the outer end of the bushing, and the bottom end of the valve rod is fixedly connected with the top of the valve core.

[0014] In some embodiments, four communication ports are formed in the outer surface of the valve core, a partition plate is fixedly arranged on the inside of the valve core, the inside of the valve core is divided into two cavities by the partition plate, and the four communication ports are in communication two by two.

[0015] In some embodiments, the sealing assembly comprises a cover plate, a sealing ring I and a sealing ring II, a valve cover is arranged at the top end of the valve shell, a sealing gasket is arranged between the valve cover and the valve shell, the cover plate is fixedly arranged at the top of the valve cover, the sealing ring I and the sealing ring II are in abutment, and the sealing ring I and the sealing ring II are arranged between the cover plate and the valve cover.

[0016] In some embodiments, the rotating assembly further comprises a rotating rod one, the rotating rod one is rotatably connected with the outer end of the rotating rod two, an installation seat is fixedly installed on the outer end of the rotating rod one, a spring is installed between the installation seat and the rotating rod two, an installation head is fixedly installed on the one end of the rotating rod one, and the rotating rod one is fixedly installed on the top of the valve rod through the installation head.

[0017] In some embodiments, the disc is fixedly installed on the top of the cover plate, a limiting groove one is formed on the outer edge of the disc, the limiting groove one is a quarter of a circular arc, a stopper is fixedly installed on the outer end of the rotating rod one, and the stopper is limited to a maximum rotation angle of 90° through the limiting groove one.

[0018] In some embodiments, a limiting block is fixedly installed on the outer end of the limiting rod, a groove matched with the limiting block is formed on the inner side of the limiting groove two, and the limiting block is clamped into the inner side of the groove when the limiting rod is located on the inner side of the limiting groove two. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic view of the utility model;

[0020] Figure 2 It is a valve shell section structure schematic view of the utility model;

[0021] Figure 3 It is a plug section structure schematic view of the utility model;

[0022] Figure 4 It is a sealing assembly explosion structure schematic view of the utility model;

[0023] Figure 5 It is a rotating assembly structure schematic view of the utility model;

[0024] Figure 6 It is a rotating rod one structure schematic view of the utility model;

[0025] Figure 7 It is a limiting disc structure schematic view of the utility model.

[0026] Explanation of reference numerals in the drawing:

[0027] 1, valve shell;

[0028] 2, valve cover;

[0029] 3, valve port;

[0030] 4, rotating assembly; 41, rotating rod one; 42, rotating rod two; 43, limiting disc; 431, disc body; 432, limiting groove one; 433, limiting groove two; 434, groove; 435, scale value; 44, limiting rod; 45, spring; 46, mounting seat; 47, mounting head; 48, stop block; 49, limiting block;

[0031] 5, sealing assembly; 51, cover plate; 52, sealing ring one; 53, sealing ring two;

[0032] 6, valve rod;

[0033] 7, plug; 71, valve core; 72, communication port; 73, partition plate;

[0034] 8, bushing;

[0035] 9, sealing ring;

[0036] 10, sealing gasket. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0038] Please refer to Figure 1 - Figure 7 A four-way plug valve, comprising: a valve shell 1, a rotating assembly 4 and a valve rod 6, the valve shell 1 is internally provided with a plug 7 for switching channels, the valve shell 1 is externally provided with four valve ports 3 connected with the interior, the rotating assembly 4 comprises a rotating rod two 42 and a limiting disc 43, the rotating rod two 42 is externally provided with a limiting rod 44, the limiting disc 43 comprises a disc body 431, the disc body 431 is externally provided with equidistantly distributed limiting grooves two 433, the disc body 431 is externally provided with scale values 435 corresponding to the limiting grooves two 433, the valve rod 6 is used for connecting the rotating assembly 4 and the plug 7, the valve rod 6 is externally provided with a sealing assembly 5, the rotating assembly 4 drives the plug 7 to rotate to the angle value indicated by the scale values 435 through the valve rod 6, and the rotating rod two 42 is clamped into the inside of the limiting grooves two 433 through the limiting rod 44 to form limiting.

[0039] The plug valve in the scheme is four-channel, and two channels are connected to each other, and the two adjacent channels can be switched. The inside of the valve shell 1 is provided with a plug 7, the plug 7 changes the channel in the inside by rotating, four valve ports 3 are fixed at the outer end of the valve shell 1, the four valve ports 3 are connected with the inside of the valve shell 1, a valve rod 6 is installed on the top of the plug 7, a rotating assembly 4 is installed on the top of the valve rod 6, the rotation of the plug 7 is driven by the rotating assembly 4, and the channel and flow size in the plug 7 can be adjusted by rotating the rotating assembly 4. A plurality of limiting grooves 433 are formed in the outer end of the limiting disc 43, corresponding angle scale values 435 are arranged beside the limiting grooves 433, when the rotating assembly 4 is rotated, the limiting rod 44 on the rotating rod 42 is clamped into the corresponding limiting groove 433 by observing the scale value 435, so that the rotation angle of the plug 7 can be visualized, the accuracy of adjusting the flow is improved, and the limiting block 49 on the limiting rod 44 is clamped into the groove 434, and the limiting rod 44 is matched to form a limiting position, so that it is not easy to be rotated by mistake, and the stability is improved.

[0040] Please refer to Figure 2 and Figure 3 , the plug 7 comprises a valve core 71, a bushing 8 is sleeved on the outer end of the valve core 71, the outer surface of the valve core 71 is in abutment with the inner side of the bushing 8 to form a seal, the bushing 8 is installed on the inner side of the valve shell 1, a sealing ring 9 is installed at the bottom of the inside of the valve shell 1, the sealing ring 9 is in abutment with the outer end of the bushing 8, and the bottom end of the valve rod 6 is fixedly connected with the top of the valve core 71.

[0041] The outer surface of the valve core 71 is provided with four communication ports 72, a partition plate 73 is fixedly installed on the inner side of the valve core 71, the partition plate 73 divides the inside of the valve core 71 into two cavities, and the four communication ports 72 are connected to each other in pairs.

[0042] The outer end of the valve core 71 is sleeved with the bushing 8, the bushing 8 is matched with the shape of the valve core 71, and both are conical, the outer surface of the valve core 71 is in close abutment with the inner side of the bushing 8, so that the sealing is realized, wherein the material of the bushing 8 can be polytetrafluoroethylene, perfluoroalkoxy resin or metal, the bushing 8 can be assembled on the inner side of the valve shell 1 in the form of interference fit, and the sealing ring 9 is installed on the inner side of the valve shell 1 close to the bottom end, the sealing ring 9 is sleeved on the outer end of the bushing 8, so as to achieve the effect of sealing and preventing leakage.

[0043] Four connecting ports 72 are opened at the outer end of the valve core 71, and four through holes matching the connecting ports 72 are also opened on the bushing 8. However, the valve core 71 is rotatable, while the bushing 8 is not. A partition plate 73 is fixed inside the valve core 71. Through the isolation of the partition plate 73, two cavities can be formed inside the valve core 71. At this time, the four connecting ports 72 can be connected in pairs. In the open state, the four connecting ports 72 are directly opposite the four valve ports 3. For ease of understanding, these four valve ports 3 are respectively represented as A, B, C, and D. Figure 3 In the current state, B and D are connected, and B and C are connected. When the valve core 71 rotates 45°, the connecting port 72 is covered by the inner wall of the bushing 8, so that the four connecting ports 72 are not connected to the valve port 3 and are in a closed state. When rotated 90°, A and B are connected, and C and D are connected, so that adjacent channels can be switched. When rotating between 0° and 90°, the overlapping area of ​​the connecting port 72 and the through hole on the bushing 8 can be changed, thereby changing the flow rate. The rotation of the valve core 71 can achieve the effects of opening and closing and regulating the flow rate.

[0044] Please see Figure 4 The sealing assembly 5 includes a cover plate 51, a first sealing ring 52 and a second sealing ring 53. A valve cover 2 is installed on the top of the valve body 1. A sealing gasket 10 is provided between the valve cover 2 and the valve body 1. The cover plate 51 is fixedly installed on the top of the valve cover 2. The first sealing ring 52 and the second sealing ring 53 abut against each other and are installed between the cover plate 51 and the valve cover 2.

[0045] The sealing component 5 in this design is mainly used for sealing. The valve cover 2 can be bolted to the top of the valve body 1. A sealing gasket 10 is placed between the valve cover 2 and the valve body 1. The sealing gasket 10 improves the sealing performance between the bottom of the valve cover 2 and the valve body 1. The cover plate 51 is fixed to the top of the valve cover 2. A sealing ring 1 52 and a sealing ring 2 53 are placed between the cover plate 51 and the top of the valve cover 2. The bottom of the valve stem 6 is fixedly connected to the valve core 71. The top of the valve stem 6 is sequentially connected to the sealing gasket 10, the valve cover 2, the sealing ring 2 53, the sealing ring 1 52, and the cover plate 51. The sealing ring 1 52 and the sealing ring 2 53 not only fill the inner side of the valve cover 2 but also fit over the outer end of the valve stem 6, thereby improving the sealing performance when the valve stem 6 rotates.

[0046] Please see Figure 5 - Figure 7 The rotating assembly 4 also includes a rotating rod 41, which is rotatably connected to the outer end of a rotating rod 42. A mounting base 46 is fixedly installed on the outer end of the rotating rod 41. A spring 45 is installed between the mounting base 46 and the rotating rod 42. A mounting head 47 is fixedly installed on one end of the rotating rod 41. The rotating rod 41 is fixedly installed on the top of the valve stem 6 through the mounting head 47.

[0047] The disc body 431 is fixedly installed on the top of the cover plate 51, a limiting groove one 432 is formed on the outer edge of the disc body 431, the limiting groove one 432 is arranged in a quarter of a circle, the outer end of the rotating rod one 41 is fixedly installed with a stop block 48, the stop block 48 is limited by the limiting groove one 432 to a maximum rotation angle of 90°.

[0048] The outer end of the limiting rod 44 is fixedly installed with a limiting block 49, a groove 434 matched with the limiting block 49 is formed on the inner side of the limiting groove two 433, and the limiting block 49 is clamped into the inner side of the groove 434 when the limiting rod 44 is located on the inner side of the limiting groove two 433.

[0049] The rotating assembly 4 in the scheme is mainly used for rotating the plug 7, the limiting disc 43 is fixed on the cover plate 51, the top of the valve rod 6 penetrates the limiting disc 43 and extends upward, one end of the rotating rod one 41 is fixedly installed with the mounting head 47, the rotating rod one 41 is fixed on the top of the valve rod 6 through the mounting head 47, so that the rotating rod one 41 can drive the valve rod 6 to rotate.

[0050] The rotating rod two 42 is rotatably installed on the outer end of the rotating rod one 41, the outer end of the rotating rod one 41 is fixedly installed with the mounting seat 46, the mounting seat 46 is mainly used for installing the spring 45, so that the spring 45 can be installed between the rotating rod one 41 and the rotating rod two 42, the limiting rod 44 is fixed on one end of the bottom of the rotating rod two 42, and the limiting rod 44 is mainly used for limiting, a plurality of annular equidistant limiting grooves two 433 are formed on the outer edge of the disc body 431, the arc formed by the plurality of limiting grooves two 433 is a quarter of a circle, that is, the plug 7 only needs to be rotated by 90°, a scale value 435 is also formed on the outer end of the disc body 431, the range of the scale value 435 is also 0° to 90°, so that it can match the limiting groove two 433, a groove 434 is also formed on the inner side of each limiting groove two 433, and a limiting block 49 is fixed on the limiting rod 44, when the limiting rod 44 is located in the limiting groove two 433, the limiting block 49 can be inserted into the inner side of the groove 434, and the limiting effect is improved in cooperation with the limiting rod 44, meanwhile, a limiting groove one 432 in a quarter of a circle is also formed on the outer edge of the disc body 431, and a stop block 48 is fixed on one end of the rotating rod one 41, when the rotating rod one 41 rotates, the stop block 48 slides in the inner side of the limiting groove one 432, so as to limit the maximum rotation angle, so that it corresponds to 0° to 90°.

[0051] When using, the rotating rod one 41 and the rotating rod two 42 can be pinched by hands at the same time, at this time the spring 45 will be compressed, and after the rotating rod two 42 rotates, the limiting rod 44 will be out of the limiting slot two 433, then the rotating rod one 41 is rotated, when the limiting rod 44 corresponds to the position of the limiting slot two 433 of the corresponding angle, the hands can be released, at this time the rotating rod two 42 will drive the limiting rod 44 to reset through the force of the spring 45, the limiting rod 44 is clamped into the limiting slot two 433, and the limiting block 49 is inserted into the inner side of the groove 434 to form limiting, so that the angle of the valve core 71 can be accurately controlled, and the effect of preventing accidental touch can be achieved.

[0052] Working principle: when the device is used to change the size of the passage or flow in the valve shell 1, first pinch the rotating rod one 41 and the rotating rod two 42 at the same time, then rotate the rotating rod one 41, when the limiting slot two 433 of the corresponding angle is reached, the hands can be released, the rotating rod two 42 will drive the limiting rod 44 to reset through the force of the spring 45, the limiting rod 44 is clamped into the limiting slot two 433, and the limiting block 49 is inserted into the inner side of the groove 434 to form limiting, so that the angle of the valve core 71 can be accurately controlled, and the effect of preventing accidental touch can be achieved, when the valve core 71 rotates 45°, the communication port 72 is covered by the inner wall of the bushing 8, so that the four communication ports 72 are not communicated with the valve port 3, and are in a closed state, when rotating 90°, the adjacent channels can be switched, when rotating between 0° and 90°, the size of the flow can be changed.

Claims

1. A four-way plug valve, characterized in that, include: Valve housing (1), a stopcock (7) for switching channels is installed inside the valve housing (1), and four valve ports (3) connected to the interior are fixedly installed at the outer end of the valve housing (1). The rotating assembly (4) includes a rotating rod (42) and a limiting disk (43). A limiting rod (44) is fixedly installed at the bottom end of the rotating rod (42). The limiting disk (43) includes a disk body (431). The outer end of the disk body (431) is provided with equal-spaced limiting grooves (433). The outer surface of the disk body (431) is engraved with scale values ​​(435) corresponding to the limiting grooves (433). A valve stem (6) is used to connect the rotating assembly (4) and the plug (7), and a sealing assembly (5) is provided at the outer end of the valve stem (6); The rotating component (4) drives the stopcock (7) to rotate to the angle value indicated by the scale value (435) via the valve stem (6), and the rotating rod (42) is inserted into the inner side of the limiting groove (433) via the limiting rod (44) to form a limit.

2. A four-way plug valve according to claim 1, characterized in that: The stopcock (7) includes a valve core (71), and a bushing (8) is fitted on the outer end of the valve core (71). The outer surface of the valve core (71) abuts against the inner side of the bushing (8) to form a seal. The bushing (8) is installed inside the valve housing (1). A sealing ring (9) is installed at the bottom inside the valve housing (1). The sealing ring (9) abuts against the outer end of the bushing (8). The bottom end of the valve stem (6) is fixedly connected to the top of the valve core (71).

3. A four-way plug valve according to claim 2, characterized in that: The valve core (71) has four connecting ports (72) on its outer surface. A partition (73) is fixedly installed on the inner side of the valve core (71). The partition (73) divides the inside of the valve core (71) into two cavities. The four connecting ports (72) are connected in pairs.

4. A four-way plug valve according to claim 1, characterized in that: The sealing assembly (5) includes a cover plate (51), a first sealing ring (52) and a second sealing ring (53). A valve cover (2) is installed on the top of the valve housing (1). A sealing gasket (10) is provided between the valve cover (2) and the valve housing (1). The cover plate (51) is fixedly installed on the top of the valve cover (2). The first sealing ring (52) and the second sealing ring (53) abut against each other, and the first sealing ring (52) and the second sealing ring (53) are installed between the cover plate (51) and the valve cover (2).

5. A four-way plug valve according to claim 4, characterized in that: The rotating assembly (4) further includes a rotating rod one (41), which is rotatably connected to the outer end of a rotating rod two (42). A mounting base (46) is fixedly installed on the outer end of the rotating rod one (41). A spring (45) is installed between the mounting base (46) and the rotating rod two (42). A mounting head (47) is fixedly installed on one end of the rotating rod one (41). The rotating rod one (41) is fixedly installed on the top of the valve stem (6) through the mounting head (47).

6. A four-way plug valve according to claim 5, characterized in that: The disc body (431) is fixedly installed on the top of the cover plate (51). A limiting groove (432) is opened on the outer edge of the disc body (431). The limiting groove (432) is set as a quarter circle arc. A stop (48) is fixedly installed on the outer end of the rotating rod (41). The stop (48) limits the maximum rotation angle to 90° through the limiting groove (432).

7. A four-way plug valve according to claim 6, characterized in that: The limiting rod (44) is fixedly installed with a limiting block (49) at its outer end. The inner side of the limiting groove (433) is provided with a groove (434) that matches the limiting block (49). When the limiting rod (44) is located inside the limiting groove (433), the limiting block (49) is inserted into the inner side of the groove (434).

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