Clean ball valve without dead zone and residue

Abstract

The invention relates to the technical field of ball valves, in particular to a dead-zone-free and residue-free clean ball valve which comprises a valve body, a valve ball is rotatably mounted in the valve body, the drift diameter of the valve ball is high in the middle and low in the two ends, an inclined plane is arranged between the middle and the two ends, the inclination of the inclined plane is 1.5 degrees, a rotating groove is formed in the bottom of the valve ball, and the rotating groove is communicated with the valve ball. A fixing rod is installed on the outer wall of the valve ball and extends into the rotating groove, a filler valve deck is installed on the top of the valve body in a sliding-in mode, a valve rod is connected into the filler valve deck in a sliding-in mode, a groove is formed in the top of the valve ball, and the lower end of the valve rod is fixed into the groove. The interior of the valve ball is arranged to be in the form that the middle is high and the two ends are low, perfect transition is formed, a medium completely flows to the low position when closed, the problems of material residues and the like cannot be formed, the corrosion phenomenon of the inner wall of the device is avoided, and cleaning of the inner wall of the valve ball is completed by arranging the cleaning mechanism and the knocking mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of ball valves, in particular to a clean ball valve without dead zones or residues. Background Art

[0002] The ball valve is driven by a valve stem and rotates around the axis of the ball valve. It can also be used for regulating and controlling fluids. The hard-sealed V-type ball valve has a strong shear force between its V-type ball core and the metal valve seat welded with hard alloy, which is particularly suitable for media containing fibers, tiny solid particles, etc. The multi-way ball valve can not only flexibly control the confluence, diversion, and flow direction switching of the medium on the pipeline, but also close any channel and connect the other two channels. Among them, the "oxygen ball valve" disclosed in the application number "CN213541395U" has solved the problem that the valve seat sealing surface of the existing oxygen ball valve is prone to leakage, and after the leakage occurs, the leakage cannot be effectively remedied. After further searching, it was found that the "a kind of hydrophobic ball valve" disclosed by the application number "CN213419978U" has effectively solved the technical disadvantages such as the packing on the valve cover of the existing valve ball is easily damaged and leaked under the action of high temperature, causing damage to the ball valve, etc., through a specific technical structure setting. However, in actual use, a clean ball valve with a similar structure and no dead zone and no residue still has many defects, such as: most of the existing same-bottom valves are in a horizontal state, so that when the valve is closed, there is still a small amount of residue inside, which is easy to cause corrosion of the inner wall if it does not circulate for a long time, so it is necessary to design a clean ball valve with no dead zone and no residue. Summary of the invention

[0003] The object of the present invention is to provide a clean ball valve without dead zone and residue, so as to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a clean ball valve with no dead zone and no residue, comprising a valve body: a valve ball is rotatably installed inside the valve body, the diameter of the valve ball is high in the middle and low at both ends, an inclined surface is provided between the middle and the two ends, the inclination of the inclined surface is 1.5°, a rotation groove is provided at the bottom of the valve ball, a fixing rod is installed on the outer wall of the valve ball and extends to the inside of the rotation groove, a packing valve cover is slidably installed on the top of the valve body, a valve stem is slidably connected to the inside of the packing valve cover, a groove is provided on the top of the valve ball, and the lower end of the valve stem is fixed inside the groove;

[0005] A cleaning mechanism is arranged on the outer wall of the valve body, and the cleaning mechanism includes a guide tube and an electric push rod symmetrically fixed on the outer wall of the valve body, a moving rod is slidably inserted in the guide tube, and the end of the moving rod is fixedly connected to a motor, an extension groove is provided on the inner wall of the valve body, a driving shaft of the motor passes through the outer wall of the valve body and extends into the extension groove, and a plurality of silicone scrapers are fixedly connected to the outer wall, a groove is provided on the outer wall of the guide tube, a limiting sliding rod sliding in the groove is fixedly connected to the outer wall of the moving rod, and the driving shaft of the electric push rod is fixedly connected to the outer wall of the limiting sliding rod.

[0006] The staff operates the valve stem to rotate the plug rod inside the groove, so that the valve stem can control the opening or closing of the valve ball from the outside, which is convenient for the staff's operation. When the valve ball is opened or closed, the fixed rod rotates inside the rotating groove, making the valve ball rotate more stably. The diameter of the valve ball is high in the middle and low at both ends. The valve ball, valve seat and valve body form a perfect transition, so that the medium flows completely to the lower place when closed, and no material residue will be formed, avoiding the corrosion of the inner wall of the device.

[0007] Preferably, the top of the packing valve cover is rotatably mounted with a hexagon socket bolt extending to the inside of the right valve body, and a positioning piece is fixedly mounted on the outside of the valve stem. The hexagon socket bolt penetrates the packing valve cover and is installed inside the packing valve cover, so that the packing valve cover is fixedly mounted on the top of the right valve body, and the positioning piece can control the rotation angle of the valve stem for positioning, so as to avoid the valve stem rotating too much and causing the valve ball to close or open incompletely.

[0008] Preferably, a handle is fixedly mounted on the top of the valve stem, a rubber sleeve is sleeved on the outside of the handle, and upper packing, middle packing and lower packing are fixedly mounted inside the packing valve cover. The staff can hold the handle to rotate the valve stem, which is convenient for the staff to operate. The rubber sleeve is sleeved on the outside of the handle to prevent the handle from being exposed for a long time and causing rust and damage to the handle, thereby improving the protection of the device.

[0009] Preferably, a sealing ring is fixedly installed on the contact surface between the valve stem and the handle, and a gasket is fixedly installed on the contact surface between the valve body and the bearing seat. The sealing ring makes the connection between the handle and the valve stem more tightly fixed, so that the handle drives the valve stem to rotate more stably, and the gasket makes the connection between the valve body and the bearing seat more sealed.

[0010] Preferably, both upper and lower ends of the valve ball are provided with cavities connected with the rotating groove and the groove, and the cavity is provided with a knocking mechanism, and the knocking mechanism includes a connecting tube fixedly formed integrally with the bottom wall of the cavity, an annular groove is provided on the outer wall of the connecting tube, a worm gear ring is sleeved on the annular groove, a motor is fixedly embedded in the inner wall of the cavity, a driving end of the motor is fixedly connected to a worm meshing with the worm gear ring, and two parallel guide rods are fixedly fixed to the bottom wall of the cavity, the end sliding sleeve of the guide rod is provided with a sliding tube, the outer wall of the guide rod is provided with a telescopic spring, the two ends of the telescopic spring are respectively fixedly connected to the outer wall of the guide rod and the end of the sliding tube, the outer wall of the sliding tube is fixedly connected with a right angle plate, the end of the right angle plate is fixedly connected with a knocking ball, the outer wall of the sliding tube is provided with a notch, the outer wall of the worm gear ring is fixedly connected with a top plate, and the upper surface of the top plate close to the sliding tube is cut with an inclined surface.

[0011] Preferably, the limiting sliding rod is arranged in a long rectangular shape.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. By setting the valve seat, valve ball, rotating groove and fixed rod, when the valve ball is opened or closed, the fixed rod rotates inside the rotating groove. The diameter of the valve ball is high in the middle and low at both ends. The valve ball, valve seat and valve body form a perfect transition, so that the medium flows completely to the lower place when closed, and no material residue or other problems are formed, avoiding the corrosion of the inner wall of the device.

[0014] 2. By setting up a cleaning mechanism, when the ball valve is closed, the silicone scraper is set toward the openings at both ends of the valve ball, the electric push rod is started, the driving end of the electric push rod is retracted, and the moving rod is pulled to move, so that the silicone scraper moves toward the inside of the valve ball, and the motor is started to drive the silicone scraper to rotate. During the movement of the moving rod, the silicone scraper and the inner wall of the valve ball complete scraping cleaning to scrape off the adhered impurities.

[0015] 3. Set up a knocking mechanism, start the motor to drive the worm to rotate, and the meshing of the worm and the worm gear ring drives the worm gear ring and the top plate to rotate. The end with a lower slope enters the notch first. As the worm gear ring rotates, the end with a higher slope enters the notch, and then lifts the sliding tube. After that, the top plate turns away from the sliding tube. Under the reverse elastic force of the telescopic spring, the sliding tube and the right-angle plate move back, and the knocking ball knocks the inner wall of the cavity, generating vibration that is transmitted to the inner wall of the valve ball, so that impurities adhering to the inner wall fall off. At this time, open the ball valve again, and the impurities can be flushed out under the impact of the medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front cross-sectional structural schematic diagram of the present invention;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the valve body of the present invention;

[0018] Figure 3 It is a structural schematic diagram of the guide tube of the present invention;

[0019] Figure 4 It is a structural schematic diagram of the valve ball of the present invention;

[0020] Figure 5 It is a structural schematic diagram of the knocking mechanism of the present invention;

[0021] Figure 6 It is a schematic diagram of the cross-sectional structure of the valve ball of the present invention.

[0022] In the figure: 1. valve body; 101. inclined surface; 102. bearing seat; 103. valve ball; 104. valve stem; 105. notch; 106. stuffing valve cover; 107. handle; 108. top plate; 109. slope; 110. cavity; 111. worm; 112. connecting pipe; 113. worm gear ring; 114. guide rod; 115. sliding tube; 116. right-angle plate; 117. knocking ball; 2. guide tube; 201. moving rod; 202. limit sliding rod; 203. electric push rod; 204. extension groove; 205. silicone scraper, 206 slot. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] Embodiment 1

[0025] like Figure 1 , Figure 6 The present invention provides a clean ball valve with no dead zone and no residue, including a valve body 1, a valve ball 103 is rotatably installed inside the valve body 1, the diameter of the valve ball 103 is high in the middle and low at both ends, an inclined surface 101 is arranged between the middle and both ends of 103, the inclination of the inclined surface 101 is 1.5°, a rotation groove is provided at the bottom of the valve ball 103, a fixing rod 105 is installed on the outer wall of the valve ball 103 and extends to the inside of the rotation groove, a packing valve cover 106 is slidably installed on the top of the valve body 1, a valve stem 104 is slidably connected to the inside of the packing valve cover 106, a groove is provided on the top of the valve ball 103, The lower end of the valve stem 104 is fixed inside the groove, and the top of the stuffing valve cover 106 is rotatably installed with a hexagon socket bolt extending to the inside of the valve body 1, and a positioning piece is fixedly installed on the outside of the valve stem 104, and a handle 107 is fixedly installed on the top of the valve stem 104, and a rubber sleeve is sleeved on the outside of the handle 107. The inside of the stuffing valve cover 106 is fixedly installed with upper stuffing, middle stuffing and lower stuffing, and a sealing ring is fixedly installed on the contact surface between the valve stem 104 and the handle 107, and a gasket is fixedly installed on the contact surface between the valve body 1 and the bearing seat 102, and the limit slide bar 202 is set in a long rectangular shape.

[0026] The working principle of a clean ball valve without dead zone and residue based on Example 1 is: the staff operates the valve stem 104 to rotate inside the groove, so that the valve stem 104 can externally control the opening or closing of the valve ball 103, which is convenient for the staff's operation. When the valve ball 103 is opened or closed, the fixed rod rotates inside the rotating groove. The diameter of the valve ball 103 is high in the middle and low at both ends. The valve body 1 forms a perfect transition. The inclined surface 101 is 1.5°, so that the medium flows completely to the lower place when closed, and no material residue will be formed, avoiding the problem of the inner wall of the device. In order to prevent corrosion from occurring, the hexagon socket bolt passes through the packing valve cover 106 and is installed inside the packing valve cover 106, so that the packing valve cover 106 is fixedly installed on the top of the valve body 1. The positioning piece can control the rotation angle of the valve stem 104 for positioning to prevent the valve stem 104 from rotating too much and causing the valve ball 103 to be closed or opened incompletely. The staff can hold the handle 107 to rotate the valve stem 104, which is convenient for the staff's operation. The rubber sleeve is sleeved on the outside of the handle 107 to prevent the handle 107 from being exposed for a long time and causing rust and damage to the handle 107, thereby improving the protection of the device.

[0027] Embodiment 2

[0028] like Figure 1 , Figure 2 and Figure 3 The present invention provides a clean ball valve with no dead zone and no residue. Compared with the first embodiment, the present embodiment further includes: a cleaning mechanism is arranged on the outer wall of the valve body 1, and the cleaning mechanism includes a guide tube 2 and an electric push rod 203 symmetrically fixed on the outer wall of the valve body 1, a moving rod 201 is slidably inserted in the guide tube 2, and a motor is fixedly connected to the end of the moving rod 201, an extension groove 204 is provided on the inner wall of the valve body 1, and the driving shaft of the motor passes through the outer wall of the valve body 1 and extends into the extension groove 204, and a plurality of silicone scrapers 205 are fixedly connected to the outer wall, a groove 206 is provided on the outer wall of the guide tube 2, and the outer wall of the moving rod 201 is provided with a plurality of silicone scrapers 205, and a groove 206 is provided on the outer wall of the guide tube 2. The wall is fixedly connected with a limit slide bar 202 sliding in the groove 206, and the driving shaft of the electric push rod 203 is fixedly connected to the outer wall of the limit slide bar 202. When the ball valve is closed, the silicone scraper 205 is set towards the openings at both ends of the valve ball 103, and the electric push rod 203 is started. The driving end of the electric push rod 203 is retracted, and the moving rod 201 is pulled to move, so that the silicone scraper 205 moves toward the inside of the valve ball 103, and the motor is started to drive the silicone scraper 205 to rotate. During the movement of the moving rod 201, the silicone scraper 205 and the inner wall of the valve ball 103 complete scraping cleaning to scrape off the adhered impurities.

[0029] Embodiment 3

[0030] like Figure 5 and Figure 6As shown, both upper and lower ends of the valve ball 103 are provided with cavities 110 connected with the rotating groove 104 and the groove 108, and the cavity 110 is provided with a knocking mechanism, which includes a connecting pipe 112 fixedly formed integrally with the bottom wall of the cavity, an annular groove is provided on the outer wall of the connecting pipe 112, a worm ring 113 is sleeved on the annular groove, a motor is fixedly embedded in the inner wall of the cavity, a worm 111 meshing with the worm ring 113 is fixedly connected to the driving end of the motor, and two parallel guides are fixed on the bottom wall of the cavity. The guide rod 114 is provided with a sliding tube 115 at the end of the guide rod 114, and a telescopic spring is provided on the outer wall of the guide rod 114. The two ends of the telescopic spring are respectively fixedly connected to the outer wall of the guide rod 114 and the end of the sliding tube 115. A right-angle plate 116 is fixedly connected to the outer wall of the sliding tube 115, and a knocking ball 117 is fixedly connected to the end of the right-angle plate 116. A notch 105 is provided on the outer wall of the sliding tube 115, and a top plate 108 is fixedly connected to the outer wall of the worm ring 113. The upper surface of the side of 108 close to the sliding tube 115 is cut with a slope 109. The end of the valve stem 104 passes through the groove and is fixed inside the connecting tube 112. The fixing rod 105 passes through the inner wall of the rotating groove and is fixed inside the connecting tube 112. When the inner wall of the valve ball 103 needs to be cleaned, the ball valve is closed, and the motor is started to drive the worm 111 to rotate. The worm ring 113 and the top plate 108 are driven to rotate through the meshing of the worm 111 and the worm ring 113. The lower end of the slope 109 is advanced. The worm ring 113 rotates and the higher end of the slope 109 enters the notch 105, thereby lifting the sliding tube 115. After that, the top plate 108 rotates away from the sliding tube 115. Under the reverse elastic force of the telescopic spring, the sliding tube 115 and the right-angle plate 116 move back, and the knocking ball 117 knocks the inner wall of the cavity, generating vibration that is transmitted to the inner wall of the valve ball 103, so that impurities adhering to the inner wall fall off. At this time, the ball valve is opened again, and the impurities can be flushed out under the impact of the medium.

[0031] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A clean ball valve without dead zone and residue, comprising a valve body (1), characterized in that: A valve ball (103) is rotatably mounted inside the valve body (1), the diameter of the valve ball (103) being higher in the middle and lower at both ends, an inclined surface (101) is arranged between the middle and both ends of the (103), the inclination of the inclined surface (101) is 1.5°, a rotation groove is provided at the bottom of the valve ball (103), a fixing rod is installed on the outer wall of the valve ball (103) and extends to the inside of the rotation groove, a stuffing valve cover (106) is slidably mounted on the top of the valve body (1), a valve stem (104) is slidably connected to the inside of the stuffing valve cover (106), a groove is provided at the top of the valve ball (103), and the lower end of the valve stem (104) is fixed inside the groove; A cleaning mechanism is provided on the outer wall of the valve body (1), and the cleaning mechanism comprises a guide tube (2) and an electric push rod (203) symmetrically fixed on the outer wall of the valve body (1); a moving rod (201) is slidably inserted in the guide tube (2); the end of the moving rod (201) is fixedly connected to a motor; an extension groove (204) is provided on the inner wall of the valve body (1); the driving shaft of the motor passes through the outer wall of the valve body (1) and extends into the extension groove (204); and a plurality of silicone scrapers (205) are fixedly connected to the outer wall; a groove (206) is provided on the outer wall of the guide tube (2); the outer wall of the moving rod (201) is fixedly connected to a limiting slide rod (202) sliding in the groove (206); and the driving shaft of the electric push rod (203) is fixedly connected to the outer wall of the limiting slide rod (202).

2. A clean ball valve without dead zone and residue according to claim 1, characterized in that: A hexagon socket bolt is rotatably mounted on the top of the packing valve cover (106) and extends to the inside of the valve body (1). A positioning piece is fixedly mounted on the outside of the valve stem (104).

3. A clean ball valve without dead zone and residue according to claim 1, characterized in that: A handle (107) is fixedly mounted on the top of the valve stem (104), a rubber sleeve is sleeved on the outer side of the handle (107), and an upper packing, a middle packing and a lower packing are fixedly mounted inside the packing valve cover (106).

4. A clean ball valve without dead zone and residue according to claim 1, characterized in that: A sealing ring is fixedly mounted on the contact surface between the valve stem (104) and the handle (107), and a gasket is fixedly mounted on the contact surface between the valve body (1) and the bearing seat (102).

5. The clean ball valve without dead zone and residue according to claim 1, characterized in that: The valve ball (103) is provided with a cavity (110) at both the upper and lower ends thereof and connected to the rotating groove and the groove. The cavity (110) is provided with a knocking mechanism, and the knocking mechanism includes a connecting pipe (112) fixedly formed integrally with the bottom wall of the cavity. An annular groove is provided on the outer wall of the connecting pipe (112), and a worm gear ring (113) is sleeved on the annular groove. A motor is fixedly embedded in the inner wall of the cavity, and a driving end of the motor is fixedly connected to a worm (111) meshing with the worm gear ring (113). Two parallel guide rods (114) are fixedly provided on the bottom wall of the cavity, and a sliding sleeve is provided at the end of the guide rod (114). The guide rod (114) is provided with a telescopic spring on its outer wall, and the two ends of the telescopic spring are respectively fixedly connected to the outer wall of the guide rod (114) and the end of the sliding tube (115). The outer wall of the sliding tube (115) is fixedly connected with a right angle plate (116), and the end of the right angle plate (116) is fixedly connected with a knocking ball (117). The outer wall of the sliding tube (115) is provided with a notch (105). The outer wall of the worm gear ring (113) is fixedly connected with a top plate (108), and a slope (109) is cut on the upper surface of the top plate (108) on the side close to the sliding tube (115).

6. A clean ball valve without dead zone and residue according to claim 1, characterized in that: The limiting sliding rod (202) is arranged in a long rectangular shape.

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