Pressure-sealed internal hanging bracket type check valve

Abstract

The present invention relates to the technical field of valves, and more specifically, to a pressure-sealed internally suspended bracket type check valve. The present invention provides a pressure-sealed internally suspended bracket type check valve, comprising: a valve body, a valve flap, a rocker, and an internally suspended bracket; a medium inlet for medium input and a medium outlet for medium output are provided on the valve body, the medium inlet and the medium outlet are oppositely arranged at both ends of the inner cavity of the valve body, and a mounting table for supporting connection is arranged above the inner cavity of the valve body; one end of the internally suspended bracket is connected to the mounting table, and the other end of the internally suspended bracket is rotatably connected to the rocker; the rocker is connected with the valve flap, and the valve flap is sealingly fitted at the inner end of the medium inlet so that the medium flows unidirectionally from the medium inlet to the medium outlet in the inner cavity of the valve body. An internally suspended bracket is arranged in the present invention. This internally suspended bracket can not only enhance the sealing stability and reduce the external leakage of the valve body, but also reduce the processing technology of the valve body, and is easy to assemble with a simple structure.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, and more specifically, to a pressure-sealed internal hanging bracket type check valve. Background Art

[0002] Currently, the well-known pressure-sealed check valve is assembled by a valve body, a valve cover, a valve flap, a valve flap nut, a washer, a valve seat, a rocker, a pressure sealing ring, a quarter ring, a pressure equalizing ring, a support plate, a pin shaft, a plug, a plug washer, bolts, nuts, and lifting ring screws. A pin hole is machined on the outer side of the valve body to place the pin shaft, and the rocker and the valve flap are hung through the pin shaft.

[0003] However, drilling holes on the outer side of this valve requires very high precision in fitting, and there cannot be any deviation. In addition, hanging the rocker and the valve flap through the pin shaft makes it difficult to control the sealing performance. Moreover, drilling holes on the outer side of the valve body easily causes external leakage at the drilled parts. Summary of the Invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further described in detail in the Detailed Description section. The Summary of the Invention section of the present invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0005] To at least partially solve the above problems, the present invention provides a pressure-sealed internal hanging bracket type check valve, including: a valve body, a valve flap, a rocker, and an internal hanging bracket; a medium inlet for medium input and a medium outlet for medium output are provided on the valve body, the medium inlet and the medium outlet are oppositely arranged at both ends of the inner cavity of the valve body, and a mounting table for supporting connection is arranged above the inner cavity of the valve body; one end of the internal hanging bracket is connected to the mounting table, and the other end of the internal hanging bracket is rotatably connected to the rocker; the rocker is connected with the valve flap, and the valve flap is sealingly fitted at the inner end of the medium inlet so that the medium flows unidirectionally from the medium inlet to the medium outlet in the inner cavity of the valve body.

[0006] Preferably, a valve seat is provided on one side of the inner cavity of the valve body close to the medium inlet, and the valve flap is sealingly fitted at the inner end of the valve seat.

[0007] Preferably, the rocker and the valve flap are tightly connected through a washer and a valve flap nut.

[0008] Preferably, a support inclined surface inclined downward from top to bottom is provided at the inner end of the valve seat to support the valve flap through the support inclined surface.

[0009] Preferably, the rocker is rotatably connected to the internal hanging bracket through a pin shaft, a limit stop block is provided at one end of the rocker far from the internal hanging bracket, and when the rocker rotates counterclockwise around the axis of the pin shaft until the limit stop block is blocked on the inner cavity of the valve body, the rotation angle of the rocker is less than degrees.

[0010] Preferably, an inspection valve port is provided above the middle of the valve body, and a valve cover is sealingly connected in the inspection valve port.

[0011] Preferably, the lower end of the outer side surface of the valve cover is sealingly fitted on the inner wall of the inspection valve port, and an annular sealing groove is formed between the upper end of the outer side surface of the valve cover and the inner wall of the inspection valve port. A pressure sealing ring and a pressure equalizing ring are sequentially sealingly fitted inside the annular sealing groove from bottom to top. The pressure sealing ring and the pressure equalizing ring are sleeved on the upper end of the outer side surface of the valve cover. An annular groove is provided on the inner wall of the inspection valve port, and a quarter ring is sealingly fitted in the annular groove. The lower end of the quarter ring presses against the pressure equalizing ring. A support plate is sealingly fitted in the inspection valve port. A plurality of longitudinal through holes are provided on the support plate. The upper end of the valve cover is fixed to the lower ends of a plurality of stud bolts. The middle parts of the plurality of stud bolts are sealingly slid in the plurality of longitudinal through holes. Nuts are threadedly fitted and connected to the upper ends of the plurality of stud bolts, and the nuts press against the support plate.

[0012] Preferably, a lifting eye bolt is threadedly fitted and connected to the support plate.

[0013] Preferably, the inner hanging bracket is connected to the mounting table by a plurality of hexagon head bolts.

[0014] Preferably, the pressure-sealed inner hanging bracket check valve further includes a mounting pipe fitting connected to the medium outlet of the valve body. The mounting pipe fitting includes a liquid inlet connecting pipe, a rectangular liquid delivery box, a square liquid delivery pipe, a swirl impeller, an impeller shaft, a sliding support, an arc-shaped baffle, a transmission connecting rod, a sliding cross plate, a guiding vertical rod, a return spring, and an outlet baffle. The inlet of the rectangular liquid delivery box is fixedly connected to the liquid inlet connecting pipe. The liquid inlet connecting pipe is sealingly connected to the medium outlet of the valve body. The outlet of the rectangular liquid delivery box is fixedly connected to the square liquid delivery pipe. The swirl impeller is fixed on the impeller shaft. The two ends of the impeller shaft are rotatably connected to the two ends of the sliding support. The two ends of the sliding support slide in two transverse sliding grooves on the inner side surface of the rectangular liquid delivery box. One end of the arc-shaped baffle is fixed to the sliding support, and the other end of the arc-shaped baffle shields above one side of the swirl impeller close to the inlet of the rectangular liquid delivery box. One end of the transmission connecting rod is rotatably connected to the sliding support, and the other end of the transmission connecting rod is rotatably connected to the sliding cross plate. The sliding cross plate is sealingly slid in the rectangular liquid delivery box and is located below the swirl impeller. Two guiding vertical rods are fixed to the lower end of the sliding cross plate. The guiding vertical rods slide on the bottom surface of the rectangular liquid delivery box. A return spring is sleeved on the rod body of the guiding vertical rod between the sliding cross plate and the bottom surface of the rectangular liquid delivery box. The upper end of the outlet baffle is fixed to the sliding cross plate and is sealingly slid in the outlet of the rectangular liquid delivery box. The middle part of the outlet baffle is sealingly slid in the longitudinal sliding track on the bottom surface of the outlet of the rectangular liquid delivery box.

[0015] The pressure-sealed internal bracket check valve also includes a first stirring component; the first stirring component includes a worm gear, a rotating wheel shaft, a polygonal sliding rod, a rotating tube and a first stirring impeller; the impeller shaft is a worm structure, the impeller shaft is meshingly connected to the worm gear, the worm gear is fixed to one end of the rotating wheel shaft, the rotating wheel shaft rotates on the sliding support through the bearing bracket, the other end of the rotating wheel shaft is fixed to one end of the polygonal sliding rod, the other end of the polygonal sliding rod slides in the polygonal slideway at one end of the rotating tube, and the other end of the rotating tube is rotatably connected to the inner side surface of the rectangular infusion box; a tensioning spring is provided in the polygonal slideway, and the tensioning spring is located between the polygonal sliding rod and the inner side surface of the polygonal slideway; the first stirring impeller is fixed to the rotating tube.

[0016] The pressure-sealed internal bracket check valve also includes a second stirring component; the second stirring component includes a friction wheel, a linkage disk, a vertical rotating shaft and a second stirring impeller; a friction wheel is fixed on the rotating wheel shaft, the friction wheel vertically frictionally drives the linkage disk, the linkage disk is fixed at the lower end of the vertical rotating shaft, and the upper end of the vertical rotating shaft rotates on the internal top surface of the rectangular infusion box; the friction wheel is located between the linkage disk and the inlet of the rectangular infusion box; a second stirring impeller is fixed on the vertical rotating shaft.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] The pressure-sealed internal bracket type check valve of the present invention effectively overcomes the problems of external leakage of the pressure-sealed check valve and insufficient symmetry of the valve body drilling. The pressure-sealed internal bracket type check valve of the present invention is provided with an internal bracket, which can not only achieve the purpose of enhancing the sealing stability and reducing the leakage outside the valve body, but also reduce the processing technology of the valve body, and is easy to assemble and has a simple structure. The present invention can conveniently coordinate the position of the valve seat and the valve disc while ensuring the reduction of leakage outside the valve body, so as to achieve adjustability, enhance the sealing stability, have a simple structure and convenient processing.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 An overall schematic diagram provided for an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of a local structure provided for an embodiment of the present invention;

[0023] Figure 3Front view of the internal hanging bracket provided by the embodiment of the present invention;

[0024] Figure 4 Top view of the internal hanging bracket provided by the embodiment of the present invention;

[0025] Figure 5 Structural schematic diagram of the connecting fitting, the first stirring assembly and the second stirring assembly provided by the embodiment of the present invention Figure 1 ;

[0026] Figure 6 Structural schematic diagram of the connecting fitting, the first stirring assembly and the second stirring assembly provided by the embodiment of the present invention Figure 2 ;

[0027] Figure 7 Partial structural sectional view provided by the embodiment of the present invention;

[0028] Figure 8 Structural schematic diagram of the first stirring assembly provided by the embodiment of the present invention;

[0029] Figure 9 Structural schematic diagram of the second stirring assembly provided by the embodiment of the present invention.

[0030] Icon: valve body 1; valve seat 2; valve flap 3; rocker 4; washer 5; valve flap nut 6; pin shaft 7; internal hanging bracket 8; valve cover 9; pressure sealing ring 10; hexagon bolt 11; pressure equalizing ring 12; quarter ring 13; support plate 14; stud 15; nut 16; lifting eye bolt 17; connecting fitting 18; liquid inlet connecting pipe 1801; rectangular liquid storage tank 1802; square liquid delivery pipe 1803; swirl impeller 1804; impeller shaft 1805; sliding support 1806; arc-shaped baffle 1807; transmission connecting rod 1808; sliding cross plate 1809; guiding vertical rod 1810; return spring 1811; outlet baffle 1812; first stirring assembly 19; worm gear 1901; rotating wheel shaft 1902; multi-faceted sliding rod 1903; rotating pipe 1904; first stirring impeller 1905; second stirring assembly 20; friction wheel 2001; linkage disk 2002; vertical rotating shaft 2003; second stirring impeller 2004. Detailed implementation manners

[0031] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, so that those skilled in the art can implement it with reference to the text of the specification.

[0033] It should be understood that the terms such as "having", "comprising", and "including" used herein do not exclude the presence or addition of one or more other elements or their combinations.

[0034] The following combines the attached Figures 1-9 The present invention will be further described in detail.

[0035] As Figures 1-9 shown, the present invention provides a pressure-sealed internal hanging bracket type check valve, including: a valve body 1, a valve flap 3, a rocker 4, and an internal hanging bracket 8; a medium inlet for medium input and a medium outlet for medium output are provided on the valve body 1, the medium inlet and the medium outlet are relatively arranged at both ends of the inner cavity of the valve body 1, and a mounting table for supporting connection is provided above the inner cavity of the valve body 1; one end of the internal hanging bracket 8 is connected to the mounting table, and the other end of the internal hanging bracket 8 is rotatably connected to the rocker 4; a valve flap 3 is connected to the rocker 4, and the valve flap 3 is sealingly fitted at the inner end of the medium inlet, so that the medium flows unidirectionally from the medium inlet to the medium outlet in the inner cavity of the valve body 1. Compared with the check valve in the prior art, in the check valve of the present invention, there is no need to process pin holes on the outside of the valve body to place pins, and an internally detachable internal hanging bracket 8 is provided inside it. The rocker 4 and the valve flap 3 are supported by the internal hanging bracket 8, reducing the number of holes drilled outside the valve body, effectively overcoming the problems of external leakage of the pressure-sealed check valve and the lack of symmetry in drilling holes in the valve body.

[0036] In the inner cavity of the valve body 1, the internal hanging bracket 8 and the mounting table of the valve body 1 are fastened by hexagon bolts 11, the internal hanging bracket 8 and the rocker 4 are connected by a pin 7, the rocker 4 and the valve flap 3 are locked by a washer 5 and a valve flap nut 6, and the valve seat 2 and the valve body 1 are welded together, finally forming a check valve flap valve seat sealing structure. This structure avoids drilling holes outside the valve body 1, reduces external leakage at the drilling positions, and at the same time, due to the adjustability of the position of the internal hanging bracket 8, it avoids the sealing instability caused by the difficulty of ensuring accurate mating due to empty positions.

[0037] A valve seat 2 is provided on one side of the inner cavity of the valve body 1 close to the medium inlet, and the valve flap 3 is sealingly fitted at the inner end of the valve seat 2.

[0038] The rocker 4 and the valve flap 3 are locked and connected by a washer 5 and a valve flap nut 6.

[0039] The inner end of the valve seat 2 is provided with a support inclined surface inclined downward from top to bottom to support the valve flap 3 through the support inclined surface.

[0040] In the inner cavity of the valve body 1, two mounting platforms are added during casting. The two mounting platforms and the inner hanging bracket 8 are fixedly connected by hexagon bolts 11. The position of the inner hanging bracket 8 is determined to be adjustable, so as to ensure better sealing fit between the valve flap 3 and the valve seat 2. When the sealing gap between the valve seat 2 and the valve flap 3 is too large or too small, the position of the inner hanging bracket 8 can be adjusted to ensure the sealing fit between the valve seat 2 and the valve flap 3. Since the inner hanging bracket is arranged inside the present invention, there is no need to drill holes outside the valve body 1, so as to achieve the purpose of enhancing the sealing stability and reducing the external leakage of the valve body.

[0041] Four bolt holes are provided on the inner hanging bracket 8, so as to be connected with the two mounting platforms through four hexagon bolts 11.

[0042] The rocker 4 is rotatably connected to the inner hanging bracket 8 through a pin shaft 7. A limit stop block is provided at one end of the rocker 4 away from the inner hanging bracket 8. When the rocker 4 rotates counterclockwise around the axis of the pin shaft 7 until the limit stop block is blocked on the inner cavity of the valve body 1, the rotation angle of the rocker 4 is less than 60 degrees.

[0043] An inspection valve port is provided above the middle of the valve body 1, and a valve cover 9 is hermetically connected in the inspection valve port.

[0044] The lower end of the outer side of the valve cover 9 is hermetically fitted on the inner wall of the inspection valve port. An annular sealing groove is formed between the upper end of the outer side of the valve cover 9 and the inner wall of the inspection valve port. A pressure sealing ring 10 and a pressure equalizing ring 12 are hermetically fitted in the annular sealing groove from bottom to top in sequence. The pressure sealing ring 10 and the pressure equalizing ring 12 are sleeved on the upper end of the outer side of the valve cover 9; an annular groove is provided on the inner wall of the inspection valve port, and a quarter ring 13 is hermetically fitted in the annular groove. The lower end of the quarter ring 13 presses against the pressure equalizing ring 12; a support plate 14 is hermetically fitted in the inspection valve port. A plurality of longitudinal through holes are provided on the support plate 14. The upper end of the valve cover 9 is fixed to the lower ends of a plurality of stud bolts 15. The middle parts of the plurality of stud bolts 15 are hermetically slid in the plurality of longitudinal through holes. Threaded nuts 16 are connected to the upper ends of the plurality of stud bolts 15, and the nuts 16 press against the support plate 14. The valve cover 9 is used to close the inspection valve port. After removing the block of the valve cover 9 on the inspection valve port, the inner hanging bracket 8 inside the present invention can be installed or disassembled through the inspection valve port, which is convenient for the inspection and maintenance of the present invention; the setting of the internal pressure sealing ring 10 and the pressure equalizing ring 12 is beneficial to improving the sealing performance of the valve cover 9 on the inspection valve port.

[0045] The connection part between the lower end of the annular sealing groove and the pressure sealing ring 10 is of a tapered groove structure. A first inclined surface inclined from inside to outside is provided below the inner side surface of the pressure sealing ring 10, and the first inclined surface is closely attached to a second inclined surface inclined from top to bottom and from inside to outside in the middle of the valve cover 9.

[0046] A lifting eye screw 17 is threadedly connected to the support plate 14.

[0047] The internal hanging bracket 8 is connected to the tipping table by a plurality of hexagon bolts 11.

[0048] The pressure-sealed internal hanging bracket check valve further includes a tipping pipe fitting 18 connected to the medium outlet of the valve body 1; the tipping pipe fitting 18 includes a liquid inlet connecting pipe 1801, a rectangular liquid delivery tank 1802, a square liquid delivery pipe 1803, a swirl impeller 1804, an impeller shaft 1805, a sliding support 1806, an arc-shaped baffle 1807, a transmission connecting rod 1808, a sliding cross plate 1809, a guiding vertical rod 1810, a return spring 1811 and an outlet baffle 1812; the inlet of the rectangular liquid delivery tank 1802 is fixedly connected to the liquid inlet connecting pipe 1801, the liquid inlet connecting pipe 1801 is sealingly connected to the medium outlet of the valve body 1, the outlet of the rectangular liquid delivery tank 1802 is fixedly connected to the square liquid delivery pipe 1803, the swirl impeller 1804 is fixed on the impeller shaft 1805, both ends of the impeller shaft 1805 are rotatably connected to both ends of the sliding support 1806, both ends of the sliding support 1806 slide in two transverse chutes on the inner side surface of the rectangular liquid delivery tank 1802, one end of the arc-shaped baffle 1807 is fixed on the sliding support 1806, and the other end of the arc-shaped baffle 1807 shields above the side of the swirl impeller 1804 close to the inlet of the rectangular liquid delivery tank 1802; one end of the transmission connecting rod 1808 is rotatably connected to the sliding support 1806, the other end of the transmission connecting rod 1808 is rotatably connected to the sliding cross plate 1809, the sliding cross plate 1809 is sealingly slidable in the rectangular liquid delivery tank 1802 and is located below the swirl impeller 1804; two guiding vertical rods 1810 are fixed to the lower end of the sliding cross plate 1809, the guiding vertical rods 1810 slide on the bottom surface of the rectangular liquid delivery tank 1802, and a return spring 1811 is sleeved on the rod body of the guiding vertical rod 1810 between the sliding cross plate 1809 and the bottom surface of the rectangular liquid delivery tank 1802; the upper end of the outlet baffle 1812 is fixed to the sliding cross plate 1809 and is sealingly slidable in the outlet of the rectangular liquid delivery tank 1802, and the middle part of the outlet baffle 1812 is sealingly slidable in the longitudinal chute on the bottom surface of the outlet of the rectangular liquid delivery tank 1802.

[0049] The connecting pipe 18 connected to the medium outlet of the valve body 1 is used for further conveying the liquid and is convenient for connecting with the pipeline. The liquid inlet connecting pipe 1801 inside the connecting pipe 18 is sealed and connected to the medium outlet of the valve body 1. The liquid that is unidirectionally conveyed to the liquid inlet connecting pipe 1801 through the medium outlet of the valve body 1 can enter the rectangular infusion box 1802, and impacts the swirl impeller 1804 when entering the rectangular infusion box 1802, so as to control the swirl impeller 1804 to rotate. The swirl impeller 1804 can stir the liquid when rotating. When conveying liquid with a certain viscosity, the swirl impeller 1804 can play a role of mechanical stirring and reducing viscosity to a certain extent. When the swirl impeller 1804 rotates, it can drive the impeller shaft 1805 to rotate; and when the liquid flow rate is too fast, the impact force generated by the liquid on the swirl impeller 1804 and the arc baffle 1807 is relatively large, not only the swirl impeller 1804 The rotation speed increases accordingly, and the arc-shaped baffle 1807 can drive the sliding support 1806 to slide in the rectangular infusion box 1802 toward the outlet direction of the rectangular infusion box 1802 under the action of the impact force, thereby pushing the sliding cross plate 1809 to move downward through the transmission connecting rod 1808. The area of ​​the infusion channel formed by the sliding cross plate 1809 and the upper part of the interior of the rectangular infusion box 1802 becomes larger, and when the sliding cross plate 1809 moves downward, it can drive the outlet baffle 1812 to slide downward, and the size of the liquid outlet formed by the outlet baffle 1812 and the outlet of the rectangular infusion box 1802 becomes larger, thereby facilitating the rapid output of the liquid; when the sliding cross plate 1809 moves downward, it can drive the guide vertical rod 1810 to slide downward and compress the reset spring 1811. When the liquid delivery volume becomes smaller or the delivery pressure becomes smaller, the sliding cross plate 1809 and the outlet baffle 1812 can be reset under the elastic force of the reset spring 1811.

[0050] The pressure-sealed internal bracket check valve further includes a first stirring assembly 19; the first stirring assembly 19 includes a worm gear 1901, a rotating wheel shaft 1902, a multi-faceted sliding rod 1903, a rotating tube 1904 and a first stirring impeller 1905; the impeller shaft 1805 is a worm structure, the impeller shaft 1805 is meshed and connected to the worm gear 1901, the worm gear 1901 is fixed to one end of the rotating wheel shaft 1902, and the rotating wheel shaft 1902 is rotated through the bearing bracket On the sliding support 1806, the other end of the rotating wheel shaft 1902 is fixed to one end of the polygonal sliding rod 1903, and the other end of the polygonal sliding rod 1903 slides in the polygonal slideway at one end of the rotating tube 1904, and the other end of the rotating tube 1904 is rotatably connected to the inner side surface of the rectangular infusion box 1802; a tensioning spring is provided in the polygonal slideway, and the tensioning spring is located between the polygonal sliding rod 1903 and the inner side surface of the polygonal slideway; a first stirring impeller 1905 is fixed to the rotating tube 1904.

[0051] The impeller shaft 1805 is a worm structure. When the impeller shaft 1805 rotates, it can drive the worm wheel 1901 to rotate. When the worm wheel 1901 rotates, it can drive the rotating wheel shaft 1902 to rotate. When the rotating wheel shaft 1902 rotates, it drives the multi-faceted sliding rod 1903 to rotate, and drives the rotating pipe 1904 to rotate through the rotation of the multi-faceted sliding rod 1903, thereby driving the first stirring impeller 1905 to mechanically stir the liquid in the rectangular liquid storage tank 1802. Additives can be injected into the rectangular liquid storage tank 1802 through the one-way valve above the rectangular liquid storage tank 1802, so as to process the corresponding liquid. Through the stirring and mixing of the first stirring impeller 1905, the mixing treatment effect is effectively improved, and there is no need to rely on other power equipment, saving energy and reducing consumption.

[0052] The described pressure-sealed internal hanging bracket check valve further includes a second stirring assembly 20; the second stirring assembly 20 includes a friction wheel 2001, a linkage disk 2002, a vertical rotating shaft 2003, and a second stirring impeller 2004; the friction wheel 2001 is fixed on the rotating wheel shaft 1902, and the friction wheel 2001 vertically frictionally drives the linkage disk 2002. The linkage disk 2002 is fixed to the lower end of the vertical rotating shaft 2003, and the upper end of the vertical rotating shaft 2003 rotates on the inner top surface of the rectangular liquid storage tank 1802; the friction wheel 2001 is located between the linkage disk 2002 and the inlet of the rectangular liquid storage tank 1802; the second stirring impeller 2004 is fixed on the vertical rotating shaft 2003. When the rotating wheel shaft 1902 rotates, it can drive the friction wheel 2001 to rotate. When the friction wheel 2001 rotates, it can drive the linkage disk 2002 to rotate, thereby driving the vertical rotating shaft 2003 and the second stirring impeller 2004 to rotate. Through the rotation of the second stirring impeller 2004 for mechanical stirring treatment, the stirring effect is further improved; and as the liquid flow rate or pressure increases, when the arc-shaped baffle 1807 drives the sliding support 1806 to slide in the rectangular liquid storage tank 1802 towards the outlet of the rectangular liquid storage tank 1802, the friction wheel 2001 gradually moves towards the axis of the linkage disk 2002, thereby increasing the transmission speed and the rotation speed of the second stirring impeller 2004, and automatic adjustment is achieved without other electronic control components.

[0053] In the described pressure-sealed internal hanging bracket check valve, the flow resistance coefficient can be calculated by the following formula. The flow resistance coefficient has a great influence on the flow velocity of the liquid in the present invention. Generally speaking, the smaller the flow resistance coefficient, the greater the water pressure required to open the valve flap 3, the faster the liquid flow velocity, and the greater the liquid delivery volume. By calculating the flow resistance coefficient, it is convenient to correct the design of the check valve, thereby improving the quality and effect of the finished product. The calculation formula of the flow resistance coefficient is as follows:

[0054]

[0055] In the formula, Q is the flow resistance coefficient when the present invention transports the liquid.

[0056] YA is the pressure difference between the two pressure detection points before and after the inner cavity of the check valve of the present invention;

[0057] YB is the internal and external pressure difference between the inside and outside of the check valve of the present invention;

[0058] M is the density of the liquid flowing through the check valve of the present invention;

[0059] L is the amount of liquid flowing through the check valve of the present invention within a certain period of time;

[0060] G is the cross-sectional area of the inner cavity of the check valve of the present invention;

[0061] Bc is the roughness coefficient of the inner cavity of the check valve of the present invention;

[0062] F1 is the actual weight of the valve flap 3 inside the present invention;

[0063] F0 is the preset weight of the valve flap 3 inside the present invention.

[0064] Wherein, YA = Y1 - Y2

[0065] The present invention is internally provided with a first pressure detector and a second pressure detector. The first pressure detector and the second pressure detector are located on both sides of the valve flap 3. The first pressure detector is arranged on one side of the inner cavity of the valve body 1 close to the medium inlet, and the second pressure detector is arranged on one side of the inner cavity of the valve body 1 close to the medium outlet. Y1 is the pressure measured by the first pressure detector on one side of the inner cavity of the valve body 1 close to the medium inlet; Y2 is the pressure measured by the second pressure detector on one side of the inner cavity of the valve body 1 close to the medium outlet.

[0066] A pressure-sealed internal hanging bracket check valve of the present invention can effectively calculate the flow resistance coefficient when the fluid flows through the check valve of the present invention through the pressure difference between the two pressure detection points before and after the inner cavity of the check valve of the present invention, the internal and external pressure difference between the inside and outside of the check valve of the present invention, the density of the liquid flowing through the check valve of the present invention, the amount of liquid flowing through the check valve of the present invention within a certain period of time, the cross-sectional area of the inner cavity of the check valve of the present invention, the roughness coefficient of the inner cavity of the check valve of the present invention, the actual weight of the valve flap 3 inside the present invention, and the preset weight of the valve flap 3 inside the present invention. In the formula of the present invention, various factors affecting the flow resistance coefficient are fully considered. On the premise that the fluid pressure, fluid temperature, and valve flap mass remain unchanged, the flow resistance coefficient of the present invention is calculated. The calculation result has good accuracy and fast speed. The valve flap inside the present invention and the inner cavity of the check valve can be designed and adjusted according to the flow resistance coefficient, so that the flow resistance coefficient of the processed check valve is smaller, thereby making the flow rate of the liquid faster, the conveyed liquid volume larger, and the efficiency higher. It is convenient to design according to different application requirements, effectively improve the performance of the check valve, and can be used for the quality detection of the check valve to verify the qualified quality of the finished product.

[0067] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0068] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] Although the embodiments of the present invention have been disclosed as above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the examples shown and described herein.

Claims

1. A pressure-sealed internal hanging bracket check valve, characterized in that, include: Valve body, valve disc, rocker, inner hanging bracket; the valve body is provided with a medium inlet for medium input and a medium outlet for medium output, the medium inlet and the medium outlet are arranged at two ends of the inner cavity of the valve body relatively, and a connecting platform for supporting connection is arranged above the inner cavity of the valve body; one end of the inner hanging bracket is connected to the connecting platform, and the other end of the inner hanging bracket is rotatably connected to the rocker; the rocker is connected with a valve disc, and the valve disc is sealed and matched with the inner end of the medium inlet, so that the medium can flow from the medium inlet to the medium outlet in the inner cavity of the valve body in a one-way manner; It also includes a connecting pipe fitting connected to the medium outlet of the valve body; the connecting pipe fitting includes a liquid inlet connecting pipe, a rectangular infusion box, a square infusion pipe, a swirl impeller, an impeller shaft, a sliding support, an arc-shaped baffle, a transmission connecting rod, a sliding cross plate, a guide vertical rod, a reset spring and an outlet baffle; the inlet of the rectangular infusion box is fixedly connected to the liquid inlet connecting pipe, the liquid inlet connecting pipe is sealingly connected to the medium outlet of the valve body, the outlet of the rectangular infusion box is fixedly connected to the square infusion pipe, the swirl impeller is fixed on the impeller shaft, the two ends of the impeller shaft are rotatably connected to the two ends of the sliding support, the two ends of the sliding support slide in the two horizontal slide grooves on the inner side of the rectangular infusion box, and one end of the arc-shaped baffle is fixed to the sliding support. On the upper side, the other end of the arc-shaped baffle blocks the upper side of the swirl impeller near the inlet side of the rectangular infusion box; one end of the transmission connecting rod rotates on the sliding support, and the other end of the transmission connecting rod rotates on the sliding horizontal plate, and the sliding horizontal plate seals and slides in the rectangular infusion box and is located below the swirl impeller; two guide vertical rods are fixed at the lower end of the sliding horizontal plate, and the guide vertical rods slide on the bottom surface of the rectangular infusion box, and the guide vertical rods are located between the sliding horizontal plate and the bottom surface of the rectangular infusion box. A reset spring is sleeved on the rod body; the upper end of the outlet baffle is fixed on the sliding horizontal plate, and seals and slides in the outlet of the rectangular infusion box, and the middle part of the outlet baffle seals and slides in the longitudinal slideway of the bottom surface of the rectangular infusion box outlet; It also includes a first stirring component; the first stirring component includes a worm gear, a rotating wheel shaft, a multi-faceted sliding rod, a rotating tube and a first stirring impeller; the impeller shaft is a worm gear structure, the impeller shaft is meshingly connected to the worm gear, the worm gear is fixed to one end of the rotating wheel shaft, the rotating wheel shaft rotates on the sliding support through the bearing bracket, the other end of the rotating wheel shaft is fixed to one end of the multi-faceted sliding rod, the other end of the multi-faceted sliding rod slides in the multi-faceted slideway at one end of the rotating tube, and the other end of the rotating tube is rotatably connected to the inner side surface of the rectangular infusion box; a tensioning spring is provided in the multi-faceted slideway, and the tensioning spring is located between the multi-faceted sliding rod and the inner side surface of the multi-faceted slideway; the first stirring impeller is fixed to the rotating tube; It also includes a second stirring component; the second stirring component includes a friction wheel, a linkage disk, a vertical rotating shaft and a second stirring impeller; a friction wheel is fixed on the rotating wheel shaft, the friction wheel vertically frictionally drives the linkage disk, the linkage disk is fixed at the lower end of the vertical rotating shaft, and the upper end of the vertical rotating shaft rotates on the top surface inside the rectangular infusion box; the friction wheel is located between the linkage disk and the inlet of the rectangular infusion box; a second stirring impeller is fixed on the vertical rotating shaft.

2. The pressure-sealed internal hanging bracket check valve according to claim 1, characterized in that, A valve seat is provided on one side of the inner cavity of the valve body close to the medium inlet, and the valve flap is sealed and fitted at the inner end of the valve seat.

3. The pressure-sealed internal hanging bracket check valve according to claim 2, characterized in that, The inner end of the valve seat is provided with a supporting inclined surface inclined from top to bottom, so as to support the valve disc through the supporting inclined surface.

4. A pressure-sealed internal hanging bracket check valve according to claim 1, characterized in that The rocker arm is rotationally connected to the inner hanging bracket through a pin shaft. A limit stop block is provided at one end of the rocker arm away from the inner hanging bracket. When the rocker arm rotates counterclockwise around the axis of the pin shaft until the limit stop block is stuck on the inner cavity of the valve body, the rotation angle of the rocker arm is less than 60 degrees.

5. A pressure-sealed internal hanging bracket check valve according to claim 1, characterized in that, An inspection valve port is provided above the middle of the valve body, and a valve cover is hermetically connected to the inspection valve port.

6. The pressure-sealed internal hanging bracket check valve according to claim 5, characterized in that, The lower end of the outer side surface of the valve cover is hermetically fitted on the inner wall of the inspection valve port. An annular sealing groove is formed between the upper end of the outer side surface of the valve cover and the inner wall of the inspection valve port. A pressure sealing ring and a pressure equalizing ring are sequentially hermetically fitted inside the annular sealing groove from bottom to top. The pressure sealing ring and the pressure equalizing ring are sleeved on the upper end of the outer side surface of the valve cover. An annular groove is provided on the inner wall of the inspection valve port, and a quarter ring is hermetically fitted in the annular groove. The lower end of the quarter ring presses against the pressure equalizing ring. A support plate is hermetically fitted in the inspection valve port. A plurality of longitudinal through holes are provided on the support plate. The upper end of the valve cover is fixed to the lower ends of a plurality of stud bolts. The middle parts of the plurality of stud bolts are hermetically slid in the plurality of longitudinal through holes. The upper ends of the plurality of stud bolts are all threadedly fitted with nuts, and the nuts press against the support plate.

7. A pressure-sealed internally suspended bracket check valve according to claim 6, characterized in that, A lifting eye screw is threadedly fitted on the support plate; the inner hanging bracket is connected to the assembly table through a plurality of hexagon head bolts.

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