An isobaric electrically controlled mechanical filling valve

Abstract

The present invention relates to an isobaric electrically controlled mechanical filling valve, comprising a valve seat, a valve body vertically fixed on the top of the valve seat, and a valve core vertically inserted in the valve body and capable of sliding up and down; a valve cavity is provided on the top of the valve seat, a comb-shaped sleeve is embedded in the valve cavity, the lower end of the valve core is movably inserted into the comb-shaped sleeve and cooperates with the lower end opening of the valve cavity; the valve also comprises a guide block, a sleeve, a sealing gasket, a return air pipe and a diaphragm valve; the sleeve is vertically and concentrically fixed on the upper end of the valve core, the guide block is sleeved and fixed on the upper end of the valve core and movably embedded in the valve body, and the sealing gasket is sleeved on the outer side of the lower end of the valve core; the return air pipe is vertically plugged into the lower end opening of the vent hole; the present invention effectively eliminates the liquid level deviation in the container after filling and prolongs the service life; in addition, the carbon dioxide gas used for purging is completely recovered for recycling with the help of two diaphragm valves, which not only avoids environmental pollution but also effectively saves resources.

Description

Technical Field

[0001] The invention relates to an isobaric electrically controlled mechanical filling valve. Background Art

[0002] A filling valve is an on-off valve that accurately and quantitatively controls flow and is commonly used in filling equipment. Existing filling valves all use traditional mechanical filling valves, which are widely used in China due to their low cost and simple maintenance. However, the opening and closing of valves, back pressure, exhaust and other actions of traditional mechanical filling valves are all driven by the friction of mechanical parts. When used in high-speed filling equipment, the mechanical friction action is often not in place, causing the liquid poured into the container to bubble, and ultimately resulting in a large deviation in the liquid level in the container after filling. Moreover, the frequent and rapid mechanical friction during high-speed filling causes the filling valve to be easily damaged and has a short service life. In addition, the existing filling valves all need to use carbon dioxide gas to purge the container after a single filling. The carbon dioxide gas after purge is all discharged to the outside and cannot be used any longer, which not only pollutes the environment, but also causes a serious waste of resources, and urgently needs to be solved. Summary of the invention

[0003] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide an isobaric electrically-controlled mechanical filling valve which greatly improves the accuracy of the action to effectively eliminate the liquid level deviation in the container after filling and prolongs the service life, while also being able to recover all the carbon dioxide gas used for purging for recycling to avoid environmental pollution and effectively save resources.

[0004] The technical solution adopted by the present invention to solve the above technical problems is: an isobaric electrically controlled mechanical filling valve, comprising a valve seat, a valve body vertically fixed on the top of the valve seat, and a valve core vertically inserted in the valve body and capable of sliding up and down; a valve cavity is provided on the top of the valve seat, a comb-shaped sleeve is embedded in the valve cavity, the lower end of the valve core is movably inserted into the comb-shaped sleeve and cooperates with the lower end opening of the valve cavity, a vertically distributed air vent is provided in the valve core, and a plurality of liquid inlet holes are provided on the outer wall of the valve body, characterized in that it also comprises a guide block, a sleeve, a sealing gasket, a return air pipe and a diaphragm valve; the sleeve is vertically and concentrically fixed to the upper end of the valve core, the guide block is sleeved and fixed on the upper end of the valve core and movably embedded in the valve body, and the sealing gasket is sleeved on the outer side of the lower end of the valve core; the return air pipe is vertically plugged into the lower end opening of the vent, and two obliquely distributed air channels are provided on the right side of the valve seat, and the inner ends of the two air channels are both aligned with the lower end opening of the valve cavity. The inner walls of the two diaphragm valves are interconnected and are both arranged below the sealing gasket, and the diaphragm valves include two, the two diaphragm valves are fixed on the right side of the valve seat, and the air outlet holes of the two diaphragm valves are respectively connected to the outer ends of the two air passages; the upper end of the sleeve is also provided with an injection mechanism, and the injection mechanism includes a connecting rod seat, a baffle, a connecting rod nut, an injection rod, an injection gasket and an injection spring; the injection rod is vertically arranged in the sleeve and can move up and down, and the injection gasket is embedded in the outer side of the lower end of the injection rod and cooperates with the upper end opening of the vent hole; the connecting rod nut is sleeved on the outer side of the upper end of the sleeve, the connecting rod seat is sleeved and screwed on the top of the connecting rod nut, the baffle is fixed to the upper end of the injection rod and is arranged in the connecting rod seat, the injection spring is vertically arranged in the connecting rod seat, the upper end of the injection spring is pressed against the inner top of the connecting rod seat, and the upper end of the injection spring is pressed against the upper side of the baffle; an air outlet is opened on one side of the connecting rod seat.

[0005] Preferably, it also includes an actuator, which includes a cylinder, a support, a spring seat, a return spring, a fixed seat and a piston rod, the fixed seat is arranged above the connecting rod seat, the piston rod is vertically inserted in the fixed seat and can move up and down, the support is fixed to the top of the fixed seat, the cylinder is fixed to the top of the support, the lower end of the piston rod is fixed to the top of the connecting rod seat, the upper end of the piston rod extends into the support, the spring seat is fixed to the upper end of the piston rod and is arranged in the support, and the return spring is sleeved outside the piston rod and between the spring seat and the fixed seat.

[0006] Preferably, the upper end of the return spring is pressed against the lower side of the spring seat, and the lower end of the return spring is pressed against the top of the fixing seat.

[0007] Preferably, the telescopic end of the cylinder passes vertically downward through the top of the support and is pressed against the upper end of the piston rod.

[0008] Preferably, a bottle mouth sealing gasket is further provided below the valve seat, and the end of the air return pipe extends downward into the bottle mouth sealing gasket.

[0009] Compared with the prior art, the advantages of the present invention are: the present invention uses an actuator and air pressure to drive the movement of the valve core to greatly improve the accuracy of the movement, and even when used in high-speed filling equipment, it will not cause the liquid poured into the container to bubble, thereby effectively eliminating the liquid level deviation in the container after filling and extending the service life; in addition, the carbon dioxide gas used for purging is completely recovered for recycling with the help of two diaphragm valves, which not only avoids environmental pollution but also effectively saves resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a cross-sectional structural diagram of the present invention;

[0011] Figure 2 It is a cross-sectional structural diagram of the present invention before filling;

[0012] Figure 3 This is a cross-sectional structural diagram of the present invention after being connected to the bottle body;

[0013] Figure 4 It is a cross-sectional structural diagram of the gas injection rod of the present invention when it is not raised;

[0014] Figure 5 It is a cross-sectional structural diagram of the present invention when starting to fill;

[0015] Figure 6 This is a cross-sectional structural diagram of the present invention after filling;

[0016] Figure 7 It is a cross-sectional structural diagram of the present invention when starting to purge;

[0017] Figure 8 It is a cross-sectional structural diagram of the present invention when exhaust begins;

[0018] Fig. 9 It is a cross-sectional structural diagram of the present invention after exhaust is completed. DETAILED DESCRIPTION

[0019] like Figures 1-2As shown, an isobaric electrically controlled mechanical filling valve comprises a valve seat 14, a valve body 12 vertically fixed on the top of the valve seat 14, and a valve core 13 vertically inserted in the valve body 12 and capable of sliding up and down; a valve cavity 141 is provided on the top of the valve seat 14, a comb-shaped sleeve 15 is embedded in the valve cavity 141, the lower end of the valve core 13 is movably inserted into the comb-shaped sleeve 15 and cooperates with the lower end opening of the valve cavity 141, a vertically distributed vent hole 131 is provided in the valve core 13, and a plurality of liquid inlet holes 131 are provided on the outer wall of the valve body 12. The valve body 121 further comprises a guide block 11, a sleeve 24, a sealing gasket 16, a return air pipe 20 and a diaphragm valve 17; the sleeve 24 is vertically and concentrically fixed to the upper end of the valve core 13, the guide block 11 is sleeved and fixed to the upper end of the valve core 13 and movably embedded in the valve body 12, and the sealing gasket 16 is sleeved and embedded on the outer side of the lower end of the valve core 13; the return air pipe 20 is vertically plugged into the lower end opening of the vent hole 131, and two obliquely distributed air passages 142 are opened on the right side of the valve seat 14, and the inner ends of the two air passages 142 are connected to the valve cavity 14. The inner walls of the lower end opening of 1 are interconnected and are both arranged below the sealing gasket 16. The diaphragm valve 17 includes two. The two diaphragm valves 17 are fixed to the right outer side of the valve seat 14. The air outlet holes of the two diaphragm valves 17 are respectively connected to the outer ends of the two air passages 142; the upper end of the sleeve 24 is also provided with an air injection mechanism, which includes a connecting rod seat 7, a baffle 8, a connecting rod nut 9, an air injection rod 10, an air injection gasket 21 and an air injection spring 22; the air injection rod 10 is vertically arranged in the sleeve 24 and can move up and down, and the air injection gasket 21 is embedded in the outer side of the lower end of the gas injection rod 10 and cooperates with the upper end opening of the vent hole 131; the connecting rod nut 9 is sleeved on the outer side of the upper end of the sleeve 24, the connecting rod seat 7 is sleeved and screwed on the top of the connecting rod nut 9, the baffle 8 is fixed to the upper end of the gas injection rod 10 and arranged in the connecting rod seat 7, the gas injection spring 22 is vertically arranged in the connecting rod seat 7, the upper end of the gas injection spring 22 is pressed against the inner top of the connecting rod seat 7, and the upper end of the gas injection spring 22 is pressed against the upper side of the baffle 8; an air outlet hole 71 is opened on one side of the connecting rod seat 7.

[0020] An isobaric electrically controlled mechanical filling valve also includes an actuator, which includes a cylinder 1, a support 2, a spring seat 3, a return spring 4, a fixed seat 5 and a piston rod 6. The fixed seat 5 is arranged above the connecting rod seat 7, and the piston rod 6 is vertically inserted in the fixed seat 5 and can move up and down. The support 2 is fixed to the top of the fixed seat 5, the cylinder 1 is fixed to the top of the support 2, the lower end of the piston rod 6 is fixed to the top of the connecting rod seat 7, and the upper end of the piston rod 6 extends into the support 2, the spring seat 3 is fixed to the upper end of the piston rod 6 and is arranged in the support 2, the return spring 4 is sleeved outside the piston rod 6 and is between the spring seat 3 and the fixed seat 5, the upper end of the return spring 4 is pressed against the lower side of the spring seat 3, and the lower end of the return spring 4 is pressed against the top of the fixed seat 5, and the telescopic end of the cylinder 1 vertically passes through the top of the support 2 and is pressed against the upper end of the piston rod 6.

[0021] A bottle mouth sealing gasket 23 is also provided below the valve seat 14 , and the end of the air return pipe 20 extends downward into the bottle mouth sealing gasket 23 .

[0022] Working principle:

[0023] (1) The fixing seat 5 and the valve seat 14 are fixed to the top and bottom of the liquid cylinder 18 respectively, and the valve body 12 is placed inside the liquid cylinder 18. When the bottle body 19 moves to the bottom of the bottle mouth sealing gasket 23, the bottle body 19 is lifted up and moves upward against the bottle mouth sealing gasket 23 until the top of the bottle mouth sealing gasket 23 abuts against the bottom of the valve seat 14. At this time, the return air pipe 20 extends into the bottle body 19 through the bottle mouth of the bottle body 19, as shown in FIG. Figures 3-4 shown.

[0024] (2) The telescopic end of the driving cylinder 1 is retracted inward to leave the piston rod 6, and the return spring 4 uses its own rebound force to push up the spring seat 3, thereby driving the piston rod 6 to move upward, thereby driving the valve core 13 to move upward with the help of the gas injection mechanism and the sleeve 24, so that a gap appears between the lower end of the valve core 13 and the lower end opening of the valve cavity 141 to start filling. The material in the liquid cylinder 18 enters the valve body 12 through the multiple liquid inlet holes 121 and flows downward into the valve cavity 141, and then flows through the multiple circumferentially arranged comb-shaped sleeves 15. The equiangularly distributed fences flow to the lower end of the valve core 13, thereby effectively preventing the occurrence of turbulence and avoiding the generation of filling bubbles. Finally, the material is poured into the bottle body 19 through the gap between the lower end of the valve core 13 and the lower end opening of the valve cavity 141. When the bottle body 19 is filled with the material, the excess material enters the vent 131 upward through the return pipe 20, thereby pushing the gas injection rod 10 upward and entering the connecting rod seat 7 through the space between the gas injection rod 10 and the sleeve 24, and finally discharged into the liquid cylinder 18 through the outlet hole 71. Figure 5 shown.

[0025] (3) When the material in the bottle body 19 approaches the end of the return air pipe 20, the telescopic end of the driving cylinder 1 extends outward to drive the gas injection mechanism to move downward with the help of the piston rod 6, and then drives the valve core 13 to move downward in the same way so that the sealing gasket 16 embedded in the lower end of the valve core 13 is re-sealed and attached to the inner wall of the lower end opening of the valve chamber 141 to cut off the material. Figure 6 shown.

[0026] (4) When filling is completed, one of the diaphragm valves 17 is opened, and the external carbon dioxide gas enters the diaphragm valve 17 through the air inlet of the diaphragm valve 17, and then is introduced into the lower end opening of the valve cavity 141 through the air outlet of the diaphragm valve 17 and a corresponding air channel 142, and then enters the top of the bottle body 19 and upwardly enters the vent 131 through the return air pipe 20, thereby pushing the gas injection rod 10 upwardly and entering the connecting rod seat 7 through the space between the gas injection rod 10 and the sleeve 24, and finally discharged into the liquid cylinder 18 through the air outlet 71. In this way, the carbon dioxide gas can be recycled and the foam and material in the return air pipe 20 are pushed back to the liquid cylinder 18. Figure 7 shown.

[0027] (5) Open the other diaphragm valve 17 to make the pressure in the bottle 19 equal to the atmospheric pressure. At this time, the gas in the bottle 19 will enter the other diaphragm valve 17 through the other air passage 142, and then the foam and material in the bottle 19 will enter the diaphragm valve 17 through the air outlet of the other diaphragm valve 17, and then be discharged and collected outward through the air inlet of the diaphragm valve 17 to avoid entering the filling environment, and finally drive the bottle 19 to descend to leave the bottle mouth sealing gasket 23 and remove the bottle 19. Figures 8-9 shown.

[0028] The present invention uses an actuator and air pressure to drive the action of the valve core 13 to greatly improve the accuracy of the action. Even when used in high-speed filling equipment, it will not cause the liquid poured into the container to bubble, thereby effectively eliminating the liquid level deviation in the container after filling and extending the service life; in addition, the two diaphragm valves 17 are used to recover all the carbon dioxide gas used for purging for recycling, which not only avoids environmental pollution but also effectively saves resources.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An isobaric electrically controlled mechanical filling valve, comprising a valve seat, a valve body vertically fixed on the top of the valve seat, and a valve core vertically inserted in the valve body and capable of sliding up and down; a valve cavity is provided on the top of the valve seat, a comb-shaped sleeve is embedded in the valve cavity, the lower end of the valve core is movably inserted into the comb-shaped sleeve and cooperates with the lower end opening of the valve cavity, a vertically distributed vent hole is provided in the valve core, and a plurality of liquid inlet holes are provided on the outer wall of the valve body, characterized in that: It also includes a guide block, a sleeve, a sealing gasket, a return air pipe and a diaphragm valve; the sleeve is vertically and concentrically fixed to the upper end of the valve core, the guide block is sleeved and fixed to the upper end of the valve core and movably embedded in the valve body, and the sealing gasket is sleeved and embedded on the outer side of the lower end of the valve core; the return air pipe is vertically plugged into the lower end opening of the vent hole, and two obliquely distributed air passages are opened on the right side of the valve seat, and the inner ends of the two air passages are interconnected with the inner wall of the lower end opening of the valve cavity and are both arranged below the sealing gasket, and the diaphragm valve includes two, the two diaphragm valves are fixed to the right side of the valve seat, and the air outlet holes of the two diaphragm valves are respectively connected to the outer ends of the two air passages; the upper end of the sleeve is also An air injection mechanism is provided, which includes a connecting rod seat, a baffle, a connecting rod nut, an air injection rod, an air injection gasket and an air injection spring; the air injection rod is vertically arranged in the sleeve and can move up and down, the air injection gasket is sleeved on the outer side of the lower end of the air injection rod and cooperates with the upper end opening of the air vent; the connecting rod nut is sleeved on the outer side of the upper end of the sleeve, the connecting rod seat is sleeved and screwed on the top of the connecting rod nut, the baffle is fixed to the upper end of the air injection rod and is arranged in the connecting rod seat, the air injection spring is vertically arranged in the connecting rod seat, the upper end of the air injection spring is pressed against the inner top of the connecting rod seat, and the upper end of the air injection spring is pressed against the upper side of the baffle; an air outlet is opened on one side of the connecting rod seat; A bottle mouth sealing pad is also provided below the valve seat, and the end of the air return pipe extends downward into the bottle mouth sealing pad; It also includes an actuator, which includes a cylinder, a support, a spring seat, a return spring, a fixed seat and a piston rod, the fixed seat is arranged above the connecting rod seat, the piston rod is vertically inserted in the fixed seat and can move up and down, the support is fixed to the top of the fixed seat, the cylinder is fixed to the top of the support, the lower end of the piston rod is fixed to the top of the connecting rod seat, the upper end of the piston rod extends into the support, the spring seat is fixed to the upper end of the piston rod and is arranged in the support, and the return spring is sleeved outside the piston rod and between the spring seat and the fixed seat; When the filling is finished, one of the diaphragm valves is opened, and the external carbon dioxide gas enters the diaphragm valve through the air inlet of the diaphragm valve, and then is introduced into the lower end opening of the valve cavity through the air outlet of the diaphragm valve and a corresponding air channel, and then enters the top of the bottle body and enters the vent upward through the return pipe, thereby pushing the gas injection rod upward and entering the connecting rod seat through the space between the gas injection rod and the sleeve, and finally discharged into the liquid cylinder through the air outlet. In this way, the carbon dioxide gas can be recycled and the foam and materials in the return pipe are pushed back to the liquid cylinder; Open the other diaphragm valve to make the pressure in the bottle equal to the atmospheric pressure. At this time, the gas in the bottle will enter the other diaphragm valve through another air channel, and then the foam and material in the bottle will enter the diaphragm valve through the air outlet of the other diaphragm valve, and then be discharged and collected outward through the air inlet of the diaphragm valve to avoid entering the filling environment, and finally drive the bottle body to descend to leave the bottle mouth sealing gasket and remove the bottle body.

2. The isobaric electrically controlled mechanical filling valve according to claim 1, characterized in that: The upper end of the return spring is pressed against the lower side of the spring seat, and the lower end of the return spring is pressed against the top of the fixing seat.

3. The isobaric electrically controlled mechanical filling valve according to claim 1, characterized in that: The telescopic end of the cylinder vertically passes through the top of the support downward and is pressed against the upper end of the piston rod.

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