Disk valve

Abstract

The utility model relates to the technical field of valves, and discloses a disc valve which comprises a first valve cover and a second valve cover. The two valve discs are located between the first valve cover and the second valve cover, and the two valve discs abut against the first valve cover and the second valve cover correspondingly; the valve element is located between the two valve discs, first grooves are formed in the positions, corresponding to the valve element, of the two valve discs correspondingly, the partial area of the valve element abuts against the two first grooves, and a containing cavity is formed between the valve element and the first grooves; the first sealing ring is arranged between the valve element and the valve disc so as to be suitable for preventing the medium from entering the containing cavity through a gap between the valve element and the valve disc. According to the disc valve, the first sealing ring is arranged between the valve element and the valve disc to block the gap between the valve element and the valve disc, so that media are prevented from entering the containing cavity and the interior of the valve element through the gap between the valve element and the valve disc, and the possibility that the media enter the interior of the valve element and damage the valve element is reduced.

Description

Technical Field

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

[0002] With the development of the new energy industry, demand for its raw material, silicon, has rapidly increased. Consequently, the silicon chemical industry has also seen a surge in demand for valves in various devices. Because valves like ball valves use a curved seal, residual media can wear away the valve's sealing surface during the opening and closing process. When this wear reaches a certain level, the seal loses its effectiveness and the valve becomes scrapped. Disc valves, on the other hand, use a flat seal, minimizing the wear on the sealing surface. This makes them particularly popular in the silicon chemical industry, such as cold hydrogenation devices. However, disc valves can experience issues with media entering the valve cavity and then into the valve core, damaging the valve core. Utility Model Content

[0003] In view of this, the utility model provides a disc valve to solve the problem that the valve core of the disc valve is easily damaged during use.

[0004] The utility model provides a disc valve, comprising:

[0005] The first valve cover and the second valve cover are spaced apart, and the first valve cover and the second valve cover are respectively provided with medium channels;

[0006] Two valve discs are located between the first valve cover and the second valve cover and are spaced apart, with the sides of the two valve discs that are away from each other respectively abutting against the sides of the first valve cover and the second valve cover that are close to each other;

[0007] The valve core is located between the two valve discs. The two valve discs are respectively provided with first grooves corresponding to the valve cores. Partial areas of the valve core abut against the two first grooves, so as to be suitable for respectively pressing the two valve discs against the first valve cover and the second valve cover. The valve core has a first state of driving the valve discs to move to block the medium channel, and a second state of driving the valve discs to move to make way for the medium channel. An accommodating cavity is formed between the valve core and the first grooves.

[0008] The first sealing ring is arranged between the valve core and the valve disc to prevent the medium from entering the accommodating cavity through the gap between the valve core and the valve disc.

[0009] Beneficial effect: By setting a first sealing ring between the valve core and the valve disc to block the gap between the valve core and the valve disc, the medium is prevented from entering the accommodating cavity and the interior of the valve core through the gap between the valve core and the valve disc, thereby reducing the possibility of the medium entering the interior of the valve core and damaging the valve core.

[0010] In an optional embodiment, the disc valve further comprises a valve stem, which is rotatably connected to the side walls of the first valve cover and the second valve cover and fixedly connected to the valve core, and the valve stem is adapted to drive the valve core to switch between the first state and the second state.

[0011] In an optional embodiment, the valve core includes a sleeve, the extension direction of the sleeve is parallel to the extension direction of the medium channel, and the outer side wall of the sleeve abuts against the side walls of the two first grooves.

[0012] In an optional embodiment, a second groove is provided on the outer side wall of the sleeve, the second groove opens toward the side wall of the first groove, and the second groove is arranged around the sleeve. The first sealing ring is arranged in the second groove and simultaneously abuts against the inner wall of the second groove and the side wall of the first groove.

[0013] In an optional embodiment, two abutment blocks are provided in the sleeve along the axial direction of the sleeve, and an elastic member is provided between the two abutment blocks, and the elastic member is suitable for making the two abutment blocks press tightly against the inner walls of the two first grooves respectively.

[0014] Beneficial effect: By arranging an elastic member between the two abutment blocks, the valve core can press the two valve discs against the first valve cover and the second valve cover respectively through the two abutment blocks, thereby ensuring the sealing effect of the valve disc on the medium channel.

[0015] In an optional embodiment, the disc valve further comprises a driving mechanism connected to the first valve cover and / or the second valve cover, one end of the valve stem passes through the first valve cover and is in transmission connection with the driving mechanism, and the driving mechanism is suitable for driving the valve stem to rotate around its axis.

[0016] In an optional embodiment, a through hole is opened in the side wall of the first valve cover corresponding to the valve stem, and the valve stem is suitable for passing through the first valve cover through the through hole. A sealing structure is provided at the through hole to seal the gap between the valve stem and the through hole.

[0017] Beneficial effect: By arranging a sealing structure at the through hole, the gap between the valve stem and the through hole is blocked, thereby preventing external dust from entering the interior of the disc valve through the gap between the valve stem and the through hole.

[0018] In an optional embodiment, the sealing structure includes a compression sleeve mounted on the valve stem, with a second sealing ring arranged around the compression sleeve. The compression sleeve and the second sealing ring are suitable for sealing the gap between the peripheral wall of the valve stem and the side wall of the through hole.

[0019] Beneficial effect: By arranging a compression sleeve on the valve stem and surrounding the compression sleeve with a second sealing ring, the gap between the valve stem and the through hole can be sealed.

[0020] In an optional embodiment, the driving mechanism includes a driver and a connecting rod, the driver has an output rod that extends or retracts relative to the driver, one end of the connecting rod is hinged to the output rod, and the other end is fixedly connected to the valve stem.

[0021] In an optional embodiment, the disc valve also includes a valve body, which is arranged between the first valve cover and the second valve cover, and a cavity is formed between the inner wall of the valve body and the first valve cover and the second valve cover, and the cavity is suitable for being connected to the medium channel; an air pipe joint is provided on the valve body, one end of the air pipe joint is connected to the cavity, and the other end is suitable for being connected to the air source pipe, and the air source pipe is suitable for blowing air into the cavity through the air pipe joint.

[0022] Beneficial effect: By arranging an air pipe joint on the valve body and connecting the air pipe joint with the air source pipe, it is convenient to blow air into the cavity inside the disc valve, thereby changing the position of the medium inside the disc valve relative to the internal structure of the disc valve, thereby preventing the medium from accumulating on the internal structure of the disc valve for a long time to form scale, thereby reducing the possibility of the disc valve being stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a side view of the disc valve of the utility model;

[0025] Figure 2 It is a cross-sectional schematic diagram of the disc valve of the utility model;

[0026] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0027] Figure 4 for Figure 2 A partial enlarged view of point B in the middle;

[0028] Figure 5 for Figure 2 A partial enlarged view of point C in the middle;

[0029] Figure 6 The sealing structure of the utility model is Figure 2 Schematic diagram of the cross section in the D direction;

[0030] Figure 7 The utility model is connected to the connecting rod along Figure 2 Schematic diagram of the cross section along the E direction;

[0031] Figure 8 This is a schematic diagram of the disc valve of the utility model having an open position and a closed position.

[0032] Description of reference numerals:

[0033] 1. First valve cover; 101. First valve seat; 102. First shaft sleeve; 103. Bearing; 2. Second valve cover; 201. Second valve seat; 202. Second shaft sleeve; 3. Valve body; 4. Valve core; 41. Abutment block; 411. Protrusion; 412. Third groove; 42. Elastic member; 43. Sleeve; 431. Second groove; 5. First sealing ring; 6. Medium channel; 7. Valve stem; 71. Boss; 72. Second gasket; 73. Screw; 8. Driving mechanism; 81. Driver; 82 , output rod; 83, connector; 84, connecting rod; 9, sealing structure; 91, second sealing ring; 92, pressing sleeve; 93, pressure plate; 94, bolt; 95, butterfly spring; 96, fourth groove; 10, valve disc; 1001, first groove; 11, air pipe joint; 12, connecting plate; 13, support; 14, first pin shaft; 15, limit block; 16, rocker; 17, graphite packing; 18, gasket; 19, screw; 20, second pin shaft; 21, anti-slip part; 22, first gasket. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0035] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0037] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] The following combination Figures 1 to 8 , describing the embodiments of the present utility model.

[0039] According to an embodiment of the present invention, a disc valve is provided, comprising:

[0040] The first valve cover 1 and the second valve cover 2 are spaced apart, and the first valve cover 1 and the second valve cover 2 are respectively provided with a medium channel 6;

[0041] Two valve discs 10 are located between the first valve cover 1 and the second valve cover 2 and are spaced apart. Sides of the two valve discs 10 that are away from each other abut against sides of the first valve cover 1 and the second valve cover 2 that are close to each other.

[0042] The valve core 4 is located between the two valve discs 10. The two valve discs 10 are respectively provided with first grooves 1001 corresponding to the valve core 4. Partial areas of the valve core 4 abut against the two first grooves 1001, so as to be suitable for respectively pressing the two valve discs 10 against the first valve cover 1 and the second valve cover 2. The valve core 4 has a first state in which the valve discs 10 are moved to block the medium channel 6, and a second state in which the valve discs 10 are moved to make way for the medium channel 6. An accommodating cavity is formed between the valve core 4 and the first grooves 1001.

[0043] The first sealing ring 5 is disposed between the valve core 4 and the valve disc 10 to prevent the medium from entering the accommodating cavity through the gap between the valve core 4 and the valve disc 10 .

[0044] The disc valve provided in this embodiment provides a first sealing ring 5 between the valve core 4 and the valve disc 10 to block the gap between the valve core 4 and the valve disc 10, thereby preventing the medium from entering the accommodating cavity and the interior of the valve core 4 through the gap between the valve core 4 and the valve disc 10, thereby reducing the possibility of the medium entering the interior of the valve core 4 and damaging the valve core 4.

[0045] Specifically, a media channel 6 extends through the first valve cover 1 and the second valve cover 2, allowing medium to enter the disc valve from one side to the other through the media channel 6. The first valve cover 1 has a first valve seat 101 surrounding the opening of the media channel 6 on the side facing the second valve cover 2. The second valve cover 2 has a second valve seat 201 surrounding the opening of the media channel 6 on the side facing the first valve cover 1. When the valve core 4 is in the first state, the two valve discs 10 respectively abut against the first and second valve seats 101, 201, forming surface contact. Once the valve discs 10 are in place, their projection along the extension of the media channel 6 covers the opening of the media channel 6, thereby isolating the media channel 6 within the disc valve and preventing the medium from passing through the disc valve. When the valve core 4 is in the second state, the projection of the valve disc 10 along the extension of the media channel 6 does not overlap with the opening of the media channel 6, thereby maintaining communication within the disc valve and allowing the medium to pass through the disc valve.

[0046] Along the extension direction parallel to the media channel 6, the adjacent sides of the two valve discs 10 are recessed into the valve core 4 to form a first groove 1001. Part of the valve core 4 abuts the sidewalls and bottom wall of the first groove 1001, thereby forming an accommodating cavity between the valve core 4 and the first groove 1001. The abutment between the valve core 4 and the sidewalls of the first groove 1001 facilitates the valve core 4 to drive the two valve discs 10 to move in a direction perpendicular to the extension direction of the media channel 6. The abutment between the bottom wall of the first groove 1001 of the valve core 4 facilitates the valve core 4 to press the two valve discs 10 against the first valve cover 1 and the second valve cover 2, respectively.

[0047] The first sealing ring 5 is arranged between the valve core 4 and the side wall of the first groove 1001 of the valve disc 10, so as to be suitable for sealing the gap between the valve core 4 and the side wall of the first groove 1001, thereby preventing the medium from entering the accommodating cavity through the gap between the valve core 4 and the side wall of the first groove 1001, and further preventing the medium from entering the interior of the valve core 4 through the accommodating cavity to damage the valve core 4, which is conducive to avoiding frequent maintenance and reducing operation and maintenance costs.

[0048] In some embodiments, combined Figures 1 to 8 As shown, the disc valve further includes a valve stem 7, which is rotatably connected to the side walls of the first valve cover 1 and the second valve cover 2 and fixedly connected to the valve core 4. The valve stem 7 is suitable for driving the valve core 4 to switch between the first state and the second state.

[0049] Specifically, the axis of the valve stem 7 is parallel to the extension direction of the medium channel 6. A second shaft sleeve 202 is provided on the side wall of the second valve cover 2 at a position corresponding to the valve stem 7. The end of the valve stem 7 near the second valve cover 2 is inserted into the second shaft sleeve 202 so as to be suitable for coaxial rotation relative to the second shaft sleeve 202. A first shaft sleeve 102 is provided on the side wall of the first valve cover 1 at a position corresponding to the valve stem 7. The end of the valve stem 7 near the first valve cover 1 is inserted into the first shaft sleeve 102. A bearing 103 is further sleeved between the valve stem 7 and the first shaft sleeve 102. The valve stem 7 is suitable for coaxial rotation relative to the first shaft sleeve 102 via the bearing 103. A rocker arm 16 is fixedly connected between the valve stem 7 and the valve core 4. Preferably, the extension direction of the rocker arm 16 is perpendicular to the extension direction of the valve stem 7. One end of the rocker arm 16 is fixedly connected to the outer wall of the valve stem 7 and is located between the first sleeve 102 and the second sleeve 202. The other end of the rocker arm 16 is fixedly connected to the valve core 4. The valve stem 7 is suitable for driving the valve core 4 to rotate around the rotation center of the valve stem 7 through the rocker arm 16.

[0050] A boss 71 is provided on the valve stem 7, and the boss 71 is located between the rocker 16 and the second sleeve 202. As a preferred embodiment, the boss 71 is arranged around the valve stem 7, and a first gasket 22 is pressed between the end faces of the boss 71 and the second sleeve 202 that are close to each other. The first gasket 22 is arranged around the valve stem 7, and the end face of the second sleeve 202 facing the first sleeve 102 is locally recessed in the area corresponding to the first gasket 22 to form a fourth groove. The fourth groove is filled with graphite filler 17, and the gap between the valve stem 7 and the second sleeve 202 is blocked by the graphite filler 17 and the first gasket 22, thereby preventing the medium from entering the gap between the valve stem 7 and the second sleeve 202, thereby affecting the rotation of the valve stem 7. The end face of the boss 71 away from the second sleeve 202 abuts against the rocker arm 16, so as to be suitable for pressing the rocker arm 16 against the first sleeve 102. A first gasket 22 surrounding the valve stem 7 is also pressed between the end faces of the rocker arm 16 and the first sleeve 102 that are close to each other. The end face of the first sleeve 102 facing the second sleeve 202 is locally recessed in the position of the first gasket 22 to form a fifth groove. The fifth groove is also filled with graphite filler 17. The gap between the valve stem 7 and the first sleeve 102 is blocked by the graphite filler 17 and the first gasket 22, thereby preventing the medium from entering the gap between the valve stem 7 and the first sleeve 102, thereby affecting the rotation of the valve stem 7.

[0051] In some embodiments, combined Figures 1 to 8 As shown, the valve core 4 includes a sleeve 43 , the extension direction of the sleeve 43 is parallel to the extension direction of the medium channel 6 , and the outer side wall of the sleeve 43 abuts against the side walls of the two first grooves 1001 .

[0052] Specifically, along a direction perpendicular to the extension of the sleeve 43, the cross-sectional dimensions of the sleeve 43 are adapted to the cross-sectional dimensions of the first groove 1001, so that the outer sidewall of the sleeve 43 abuts the sidewalls of the two first grooves 1001, thereby ensuring the stability of the movement of the valve disc 10 driven by the valve core 4 through the sleeve 43 along a direction perpendicular to the extension of the sleeve 43. The rocker 16 is sleeved on the outer peripheral wall of the sleeve 43 and can be fixedly connected to the sleeve 43 or rotatably connected to the sleeve 43. Two limit blocks 15 are fixedly connected to the sleeve 43 and surround the sleeve 43. The two limit blocks 15 are located on either side of the rocker 16 and abut against the rocker 16. The two limit blocks 15 are adapted to prevent the rocker 16 from moving along the axis of the sleeve 43 on the sleeve 43.

[0053] In some embodiments, combined Figures 1 to 8 As shown, a second groove 431 is provided on the outer wall of the sleeve 43, the second groove 431 opens toward the side wall of the first groove 1001, and the second groove 431 is arranged around the sleeve 43, and the first sealing ring 5 is arranged in the second groove 431 and simultaneously abuts against the inner wall of the second groove 431 and the side wall of the first groove 1001.

[0054] Specifically, at least one second groove 431 is provided on the outer side wall of the sleeve 43 corresponding to each side wall of the first groove 1001, and the number of the first sealing rings 5 ​​matches the number of the second grooves 431. The first sealing ring 5 is suitable for sealing the gap between the sleeve 43 and the side wall of the first groove 1001 to prevent the medium from entering the accommodating cavity through the gap between the sleeve 43 and the side wall of the first groove 1001 and damaging the internal structure of the valve core 4.

[0055] In some embodiments, combined Figures 1 to 8 As shown, along the axial direction of the sleeve 43, two abutment blocks 41 are provided in the sleeve 43, and an elastic member 42 is provided between the two abutment blocks 41. The elastic member 42 is suitable for making the two abutment blocks 41 press tightly against the inner walls of the two first grooves 1001 respectively.

[0056] The disc valve provided in this embodiment provides an elastic member 42 between the two abutment blocks 41 so that the valve core 4 can press the two valve discs 10 against the first valve cover 1 and the second valve cover 2 respectively through the two abutment blocks 41, thereby ensuring the sealing effect of the valve disc 10 on the medium channel 6.

[0057] Specifically, there is at least one elastic member 42, which is compressed to cause the two abutment blocks 41 to move away from each other. The elastic member 42 comprises a spring and a rubber block. The abutment block 41 presses the two valve discs 10 against the first valve cover 1 and the second valve cover 2, respectively, along the axis of the sleeve 43. The sleeve 43 drives the valve discs 10 to move perpendicular to the extension direction of the sleeve 43, and the first sealing ring 5 forms a seal around the circumference of the sleeve 43.

[0058] Preferably, along the axial direction of the sleeve 43 , the outer wall of the abutment block 41 contacts the inner wall of the sleeve 43 to ensure the sliding stability of the abutment block 41 relative to the inner wall of the sleeve 43 along the axial direction of the sleeve 43 . Along the extension direction of the sleeve 43, the length of the sleeve 43 is greater than the distance between the end faces of the two valve discs 10 that are close to each other, and is smaller than the distance between the bottom walls of the two first grooves 1001. The spacing between the end faces of the two abutting blocks 41 that are away from each other is greater than the length of the sleeve 43, and the local areas of the end faces of the two abutting blocks 41 that are away from each other protrude and abut against the bottom wall of the first groove 1001. An accommodating cavity is formed between the abutting block 41, the sleeve 43 and the first groove 1001. The first sealing ring 5 blocks the gap between the sleeve 43 and the side wall of the first groove 1001 to prevent the medium from entering the accommodating cavity through the gap between the sleeve 43 and the side wall of the first groove 1001, and entering the gap between the abutting block 41 and the inner wall of the sleeve 43 and the gap between the two abutting blocks 41 through the accommodating cavity, thereby affecting the normal function of the abutting block 41 and the elastic member 42.

[0059] Any one of the two abutting blocks 41 protrudes toward a local area of ​​the end surface of the other to form a protrusion 411, and the other corresponding protrusion 411 is formed with a third groove 412. The protrusion 411 is slidingly connected to the side wall of the third groove 412 to further enhance the stability of the relative movement of the two abutting blocks 41.

[0060] In some embodiments, combined Figures 1 to 8 As shown, the disc valve also includes a driving mechanism 8 connected to the first valve cover 1 and / or the second valve cover 2. One end of the valve stem 7 passes through the first valve cover 1 and is in transmission connection with the driving mechanism 8. The driving mechanism 8 is suitable for driving the valve stem 7 to rotate around its axis.

[0061] In some embodiments, combined Figures 1 to 8 As shown, a through hole is opened on the side wall of the first valve cover 1 corresponding to the valve stem 7. The valve stem 7 is suitable for passing through the through hole to pass through the first valve cover 1. A sealing structure 9 is provided at the through hole to seal the gap between the valve stem 7 and the through hole.

[0062] The disc valve provided in this embodiment provides a sealing structure 9 at the through hole to seal the gap between the valve stem 7 and the through hole, thereby preventing external dust from entering the interior of the disc valve through the gap between the valve stem 7 and the through hole.

[0063] In some embodiments, combined Figures 1 to 8 As shown, the sealing structure 9 includes a compression sleeve 92 sleeved on the valve stem 7, and a second sealing ring 91 is arranged around the compression sleeve 92. The compression sleeve 92 and the second sealing ring 91 are suitable for sealing the gap between the peripheral wall of the valve stem 7 and the side wall of the through hole.

[0064] The disc valve provided in this embodiment is configured such that a compression sleeve 92 is sleeved on the valve stem 7 and a second sealing ring 91 is disposed around the compression sleeve 92 to seal the gap between the valve stem 7 and the through hole.

[0065] Specifically, the first sleeve 102 may penetrate the side wall of the first valve cover 1 or may not penetrate the side wall of the first valve cover 1. When the first sleeve 102 does not penetrate the side wall of the first valve cover 1, the through hole is opened on the side wall of the first valve cover 1. Figure 4 As shown, taking the example of a first sleeve 102 penetrating the side wall of the first valve cover 1, a through hole is formed on the first sleeve 102. The diameter of the through hole is larger than that of the first sleeve 102, so that a stop surface 104 is formed between the through hole and the first sleeve 102 on the side away from the outside of the disc valve. Along the radial direction of the valve stem 7, the thickness of the press sleeve 92 is adapted to the gap between the valve stem 7 and the side wall of the through hole. The outer peripheral wall of the press sleeve 92 abuts against the side wall of the through hole, and the inner peripheral wall of the press sleeve 92 abuts against the outer peripheral wall of the valve stem 7. At least one fourth groove 96 is provided on each of the inner and outer peripheral walls of the press sleeve 92. The second sealing ring 91 is disposed within the fourth groove 96 and abuts against the inner wall of the fourth groove 96 and the side wall of the through hole, thereby sealing the gaps between the press sleeve 92 and the through hole, and between the press sleeve 92 and the valve stem 7. Graphite filler 17 is filled between the pressing sleeve 92 and the shift surface 104. The gap between the valve stem 7 and the side wall of the through hole is blocked by the graphite filler 17, the pressing sleeve 92 and the second sealing ring 91, thereby preventing external dust from entering the gap between the valve stem 7 and the side wall of the through hole, and / or entering the interior of the disc valve through the gap between the valve stem 7 and the side wall of the through hole, thereby reducing the possibility of the disc valve being stuck.

[0066] Part of the structure of the pressing sleeve 92 is exposed on the disc valve. A pressure plate 93 is provided at one end of the pressing sleeve 92 away from the disc valve. The pressure plate 93 is sleeved on the valve stem 7 and abuts against the pressing sleeve 92. At least one bolt 94 is provided on the pressure plate 93. The screw portion of the bolt 94 passes through the pressure plate 93 and is screwed into the threaded hole of the first valve cover 1. A butterfly spring 95 is provided between the screw head of the bolt 94 and the pressure plate 93 to prevent the bolt 94 from loosening and continuously provide a clamping force to the pressure plate 93. The pressing sleeve 92 is pressed by the pressure plate 93 so that the pressing sleeve 92 has a tendency to move along the axis of the valve stem 7 relative to the second valve cover 2, thereby compacting the graphite filler 17 at the through hole.

[0067] In some embodiments, combined Figures 1 to 8 As shown, the driving mechanism 8 includes a driver 81 and a connecting rod 84. The driver 81 has an output rod 82 that can be extended or retracted relative to it. One end of the connecting rod 84 is hinged to the output rod 82, and the other end is fixedly connected to the valve stem 7.

[0068] Specifically, a connecting plate 12 is fixedly connected to the first valve cover 1 and / or the second valve cover 2. The end of the connecting plate 12 away from the disc valve is fixedly connected to a support 13. A driver 81 is hingedly connected to the support 13 via a first pin 14. The driver 81 includes a linear servo motor, a hydraulic actuator, and a pneumatic actuator. The end of the output rod 82 away from the driver 81 is fixedly connected to a connector 83. The connector 83 defines a groove. The end of the connecting rod 84 away from the disc valve falls into the groove and passes through both the connector 83 and the connecting rod 84 via a second pin 20, thereby forming a hinged connection between the connecting rod 84 and the connector 83. A through hole is defined at the exit end of the first sleeve 102, the axis of which is arranged at an angle to the axis of the first sleeve 102. An anti-slip member 21 is inserted into the through hole to prevent the second pin 20 from disengaging from the connecting rod 84 and the connector 83. The anti-slip member 21 includes a cotter pin, a pin, and matching bolts and nuts. The end of the connecting rod 84 near the disk valve is fixedly connected to the outer peripheral wall of the valve stem 7, and the extension direction of the connecting rod 84 is perpendicular to the axis of the valve stem 7. The connecting rod 84 is suitable for rotating about the axis of the valve stem 7. The end surface of the valve stem 7 away from the second valve cover 2 is provided with a second washer 72. The plane of the second washer 72 is perpendicular to the axis of the valve stem 7. The screw 73 passes through the second washer 72 and is screwed into the valve stem 7 to fix the second washer 72 to the valve stem 7, wherein the diameter of the second washer 72 is larger than the diameter of the valve stem 7. The extension direction of the output rod 82 is perpendicular to the extension direction of the valve stem 7, and the moving surface of the output rod 82 for extension or retraction is parallel to the rotation surface of the connecting rod 84.

[0069] In some embodiments, combined Figures 1 to 8 As shown, the disc valve also includes a valve body 3, which is arranged between the first valve cover 1 and the second valve cover 2. A cavity is formed between the inner wall of the valve body 3 and the first valve cover 1 and the second valve cover 2, and the cavity is suitable for being connected to the medium channel 6; an air pipe joint 11 is provided on the valve body 3, one end of the air pipe joint 11 is connected to the cavity, and the other end is suitable for being connected to the air source pipe, and the air source pipe is suitable for blowing air into the cavity through the air pipe joint 11.

[0070] The disc valve provided in this embodiment provides an air pipe connector 11 on the valve body 3 and connects the air pipe connector 11 to the air source pipe to facilitate blowing air into the cavity inside the disc valve, thereby changing the position of the medium inside the disc valve relative to the internal structure of the disc valve, thereby preventing the medium from accumulating on the internal structure of the disc valve for a long time to form scale, and reducing the possibility of the disc valve getting stuck.

[0071] Specifically, a screw 19 passes through the first and second valve covers 1 and 2, and at least one nut is provided at each end of the screw 19. By tightening the nut, the first and second valve covers 1 and 2 are fixedly connected, and the valve body 3 located between the first and second valve covers 1 and 2 is fixedly connected. Sixth grooves are provided on the sidewalls of the first and second valve covers 1 and 2, respectively, at positions corresponding to the sidewalls of the valve body 3. Gaskets 18 are provided in the sixth grooves, which seal the gap between the valve body 3 and the first and second valve covers 1 and 2, thereby improving the sealing performance of the disc valve. The air source pipe regularly blows air into the cavity of the disc valve through the air pipe connector 11 to prevent dust from accumulating on the internal structure of the disc valve over time and forming a structure, thereby reducing the possibility of the disc valve getting stuck.

[0072] Obviously, the above embodiments are merely examples for the purpose of clarity of explanation and are not intended to limit the implementation methods. Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the present invention.

Claims

1. A disc valve, characterized in that: include: The first valve cover (1) and the second valve cover (2) are arranged at an interval, and the first valve cover (1) and the second valve cover (2) are respectively provided with a medium channel (6); Two valve discs (10) are located between the first valve cover (1) and the second valve cover (2) and are arranged at intervals, and the sides of the two valve discs (10) that are away from each other are respectively in contact with the sides of the first valve cover (1) and the second valve cover (2) that are close to each other; A valve core (4) is located between the two valve discs (10), the two valve discs (10) are respectively provided with first grooves (1001) corresponding to the valve core (4), a partial area of ​​the valve core (4) is in contact with the two first grooves (1001), so as to be suitable for pressing the two valve discs (10) against the first valve cover (1) and the second valve cover (2), respectively, and has a first state of driving the valve disc (10) to move to block the medium channel (6), and a second state of driving the valve disc (10) to move to make way for the medium channel (6), and an accommodating cavity is formed between the valve core (4) and the first grooves (1001); A first sealing ring (5) is arranged between the valve core (4) and the valve disc (10) to prevent the medium from entering the accommodating cavity through the gap between the valve core (4) and the valve disc (10).

2. The disc valve according to claim 1, characterized in that The disc valve further comprises a valve stem (7), wherein the valve stem (7) is rotatably connected to the side walls of the first valve cover (1) and the second valve cover (2), and is fixedly connected to the valve core (4), and the valve stem (7) is suitable for driving the valve core (4) to switch between the first state and the second state.

3. The disc valve according to claim 2, characterized in that The valve core (4) comprises a sleeve (43), the extension direction of the sleeve (43) is parallel to the extension direction of the medium channel (6), and the outer side wall of the sleeve (43) abuts against the side walls of the two first grooves (1001).

4. The disc valve according to claim 3, characterized in that The outer wall of the sleeve (43) is provided with a second groove (431), the opening of the second groove (431) is directed toward the side wall of the first groove (1001), and the second groove (431) is arranged around the sleeve (43), and the first sealing ring (5) is arranged in the second groove (431) and abuts against the inner wall of the second groove (431) and the side wall of the first groove (1001) at the same time.

5. The disc valve according to claim 3, characterized in that Along the axial direction of the sleeve (43), two abutment blocks (41) are arranged inside the sleeve (43), an elastic member (42) is arranged between the two abutment blocks (41), and the elastic member (42) is suitable for making the two abutment blocks (41) respectively abut against the inner walls of the two first grooves (1001).

6. The disc valve according to claim 2, characterized in that The disc valve further comprises a driving mechanism (8) connected to the first valve cover (1) and / or the second valve cover (2); one end of the valve stem (7) passes through the first valve cover (1) and is transmission-connected to the driving mechanism (8); the driving mechanism (8) is suitable for driving the valve stem (7) to rotate around its axis.

7. The disc valve according to claim 6, characterized in that A through hole is provided on the side wall of the first valve cover (1) corresponding to the valve stem (7), and the valve stem (7) is suitable for passing through the through hole to pass out of the first valve cover (1). A sealing structure (9) is provided at the through hole to seal the gap between the valve stem (7) and the through hole.

8. The disc valve according to claim 7, characterized in that The sealing structure (9) comprises a compression sleeve (92) sleeved on the valve stem (7), a second sealing ring (91) being arranged around the compression sleeve (92), and the compression sleeve (92) and the second sealing ring (91) are suitable for sealing the gap between the peripheral wall of the valve stem (7) and the side wall of the through hole.

9. The disc valve according to claim 6, characterized in that The driving mechanism (8) comprises a driver (81) and a connecting rod (84); the driver (81) has an output rod (82) that can be extended or retracted relative to the driver (81); one end of the connecting rod (84) is hinged to the output rod (82), and the other end is fixedly connected to the valve stem (7).

10. The disc valve according to any one of claims 1 to 9, characterized in that The disc valve also includes a valve body (3), wherein the valve body (3) is arranged between the first valve cover (1) and the second valve cover (2), and a cavity is formed between the inner wall of the valve body (3) and the first valve cover (1) and the second valve cover (2), and the cavity is suitable for being connected to the medium channel (6); an air pipe joint (11) is arranged on the valve body (3), one end of the air pipe joint (11) is connected to the cavity, and the other end is suitable for being connected to an air source pipe, and the air source pipe is suitable for blowing air into the cavity through the air pipe joint (11).

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