A contact thermal filling valve

Abstract

The present invention discloses a contact thermal filling valve, comprising: a valve body with a valve cavity, an inlet and a valve port are provided on the valve body, a valve port gasket is arranged at the bottom of the valve port, a valve stem axially penetrates through the valve cavity, a valve core is arranged at the lower end of the valve stem in the valve cavity, the valve stem is driven by a driving mechanism, and the driving mechanism drives the valve stem to move to open or close the valve. A fixture is arranged below the valve port, and the fixture can drive the container it holds to move upward until the mouth of the container presses against the bottom of the valve port, or move downward to separate the container from the bottom of the valve port. A return material channel is arranged in the side wall of the valve body, one end of the return material channel is communicated with the valve cavity, and the other end of the return material channel is connected with a return material control valve. A return air channel is arranged in the valve stem, and the upper end of the return air channel is communicated with an exhaust channel. The advantages of the present invention are: to provide a contact thermal filling valve structure with a novel structure, which can effectively reduce the generation of foam, thereby improving the filling stability.

Description

Technical Field

[0001] The present invention relates to the technical field of hot filling valves, and particularly to a contact type hot filling valve. Background Art

[0002] Traditional hot filling production of beverages mainly uses non-contact hot filling valves. The structure of a non-contact hot filling valve includes: a valve body with a valve cavity, a feed port is arranged on the valve body, a valve port is arranged at the bottom of the valve body, a valve core is arranged in the valve cavity, the upper end of the valve core extends out of the valve body and is driven by a driving mechanism. Under the drive of the driving mechanism, the valve core moves up and down, so that the valve port can be connected with the valve cavity to open the valve, or the valve port can be separated from the valve cavity to close the valve.

[0003] In order to meet the filling requirements of different materials and further improve the production efficiency of hot filling, our company has developed a contact type hot filling valve. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: to provide a contact type hot filling valve with a simple structure and high filling efficiency.

[0005] To solve the above problems, the technical solution adopted by the present invention is: a contact type hot filling valve, including: a valve body with a valve cavity, a feed port and a valve port are opened on the valve body, the valve port is located at the bottom of the valve cavity, a valve port gasket is arranged at the bottom of the valve port, a valve rod axially penetrates through the valve cavity, a valve core is arranged at the lower end of the valve rod in the valve cavity, the upper end of the valve rod extends out of the valve body and is driven by a driving mechanism, and the driving mechanism can drive the valve core to move up and down through the valve rod, so that the valve port is connected with the valve cavity to open the valve, or the valve port is separated from the valve cavity to close the valve. A fixture for clamping a container is arranged directly below the valve port, and the fixture is connected to a lifting driving mechanism on the frame. Under the drive of the lifting driving mechanism, the fixture can drive the clamped container to move upward until the mouth of the container presses against the bottom of the valve port, or move downward so that the container is separated from the bottom of the valve port. A return material channel is arranged in the side wall of the valve body, one end of the return material channel is communicated with the valve cavity, and the other end of the return material channel is connected to a return material control valve. The return material control valve is arranged on the outer wall of the valve body. A return air channel is arranged in the valve rod, the return air channel axially penetrates through the valve rod, and the upper end of the return air channel is communicated with an exhaust channel.

[0006] Further, for a contact thermal filling valve as described above, the drive mechanism includes: a valve cover is provided at the top of the valve body, an installation groove recessed downward is provided at the top of the valve cover, the upper end of the valve stem extends out of the installation groove, a connecting sleeve is sleeved on the valve stem at the top of the valve body, a spring seat is provided outside the connecting sleeve, the spring seat is fixed in the installation groove, a connecting ring is provided at the top of the connecting sleeve, a compression spring is provided between the connecting ring and the spring seat, a pressing block is provided at the top of the connecting sleeve, and the pressing block, the connecting sleeve and the valve stem are hermetically fixed to each other; a valve closing cylinder is provided above the pressing block, the valve closing cylinder is installed on the frame, the piston rod of the valve closing cylinder extends downward and can press against the top of the pressing block, driving the pressing block to drive the connecting sleeve and the valve stem to move downward together, so as to drive the valve core to move downward until the valve port is separated from the valve cavity to close the valve; after that, when the piston rod of the valve closing cylinder retracts upward and is separated from the pressing block, under the elastic force of the compression spring, the pressing block, the connecting sleeve and the valve stem move upward to return to the initial position, and the valve core moves upward to make the valve port communicate with the valve cavity to open the valve.

[0007] Furthermore, for a contact thermal filling valve as described above, the connection structure between the pressing block, the connecting sleeve and the valve stem includes: a tapered connection groove with a gradually decreasing inner diameter from top to bottom is provided at the upper end of the connecting sleeve, a tapered expansion sleeve is provided in the tapered connection groove, the tapered expansion sleeve is sleeved on the valve stem, a sealing ring is sleeved on the valve stem above the tapered expansion sleeve, the sealing ring makes the pressing block, the connecting sleeve and the valve stem airtight, and a locking bolt is provided between the connecting ring of the pressing block and the connecting sleeve. Tightening the locking bolt can make the tapered expansion sleeve expand and tighten in the tapered connection groove, so as to fix the pressing block, the connecting sleeve and the valve stem to each other; an exhaust passage is provided in the pressing block and communicates with an exhaust port on the outer wall of the pressing block, and the top end of the air return passage is connected to the exhaust passage.

[0008] Furthermore, for a contact thermal filling valve as described above, a limiting groove is provided on the connecting sleeve, a limiting shaft is provided in the limiting groove, and the limiting shaft is fixed to the spring seat and the valve cover.

[0009] Further, for a contact thermal filling valve as described above, a dust-proof sleeve is provided outside the compression spring, and the upper end of the dust-proof sleeve is fixedly connected to the pressing block.

[0010] Further, for a contact thermal filling valve as described above, a tapered section of the valve cavity with a gradually decreasing inner diameter from top to bottom is provided at the lower end of the valve cavity, the inner wall of the tapered section of the valve cavity is arc-transitioned to the inner wall of the valve port, a sealing pad is provided at the lower end of the valve core, when the valve stem moves downward, the sealing pad on the valve core can be hermetically blocked on the inner wall of the tapered section of the valve cavity to close the valve, and when the valve stem moves upward, the sealing pad on the valve core can be separated from the inner wall of the tapered section of the valve cavity to open the valve.

[0011] Further, for a contact thermal filling valve described above, an elastic corrugated pipe is sleeved on the valve stem in the valve cavity, sealing rings are respectively arranged at the upper and lower ends of the elastic corrugated pipe, the sealing ring at the upper end of the elastic corrugated pipe is hermetically fixed to the top of the valve body, and the sealing ring at the lower end of the elastic corrugated pipe is hermetically fixed to the top of the valve core.

[0012] Further, for a contact thermal filling valve described above, a flow guide sleeve capable of guiding materials to move towards the inner wall of the valve cavity is arranged outside the valve core.

[0013] Still further, for a contact thermal filling valve described above, the structure of the flow guide sleeve includes: a sleeve body, and a plurality of flow guide ribs spirally downward and gradually guiding towards the inner wall of the valve cavity are further arranged on the outer wall of the sleeve body, and a flow guide channel for guiding the liquid material to spiral downward and flow towards the inner wall of the valve cavity is formed between adjacent flow guide ribs.

[0014] Further, for a contact thermal filling valve described above, the lower port of the reflux channel is communicated with the bottom of the valve cavity.

[0015] The advantages of the present invention are as follows: First, a contact thermal filling valve with a novel structure is provided, and a new filling method for thermal filling is provided. The contact filling shortens the distance between the valve port and the container port, thereby effectively reducing the generation of foam and improving the stability of thermal filling. Second, materials that do not meet the temperature requirements can be discharged through the return material channel, which effectively ensures the filling quality. Third, the structure is simple and practical, and the manufacturing cost is low. Fourth, the setting of the flow guide sleeve guides the materials towards the inner wall of the valve cavity, which can further reduce the generation of foam and thus further improve the thermal filling effect. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of a contact thermal filling valve described in the present invention.

[0017] Figure 2 is Figure 1 a three-dimensional structural diagram of the flow guide sleeve in Detailed Description of the Invention

[0018] The present invention will be further described in detail below with reference to the drawings and preferred embodiments.

[0019] Such as Figure 1 、 Figure 2As shown in the figure, a contact thermal filling valve includes: a valve body 1 with a valve cavity 11, an inlet 12 and a valve port 13 are provided on the valve body 1. The valve port 13 is located at the bottom of the valve cavity 11, and a valve port gasket 14 is provided at the bottom of the valve port 13. A valve rod 2 is axially arranged through the valve cavity 11, and a valve core 21 is provided at the lower end of the valve rod 2 in the valve cavity 11. The upper end of the valve rod 2 extends out of the valve body 1 and is driven by a driving mechanism. The driving mechanism can drive the valve core 21 to move up and down through the valve rod 2, so that the valve port 13 is communicated with the valve cavity 11 to open the valve, or the valve port 13 is separated from the valve cavity 111 to close the valve.

[0020] A fixture 5 for clamping the container is provided directly below the valve port 13. The fixture 5 is connected to a lifting driving mechanism on the frame. Driven by the lifting driving mechanism, the fixture 5 can drive the clamped container to move upward until the mouth of the container is hermetically pressed against the valve port gasket 14 at the bottom of the valve port 13, or move downward so that the container is separated from the valve port gasket 14. In this embodiment, the lifting driving mechanism includes a lifting cylinder 6, and the lifting cylinder 6 is connected to the fixture 5 through a pull rod 61.

[0021] In this embodiment, an elastic bellows 18 is sleeved on the valve rod 2 in the valve cavity 11. Sealing rings 181 are respectively provided at the upper and lower ends of the elastic bellows 18. The sealing ring 181 at the upper end of the elastic bellows 18 is hermetically fixed to the top of the valve body 1, and the sealing ring 181 at the lower end of the elastic bellows 18 is hermetically fixed to the top of the valve core 21. The elastic bellows 18 is sleeved on the valve rod 2, which plays a good sealing role and does not affect the movement of the valve rod 2 at the same time.

[0022] A return material channel 15 is provided in the side wall of the valve body 1. One end of the return material channel 15 is communicated with the valve cavity 11, and the other end of the return material channel 15 is connected to a return material control valve 16. The return material control valve 16 is provided on the outer wall of the valve body 1. The lower port of the return material channel 15 is communicated with the bottom of the valve cavity 11. A return air channel 3 is provided in the valve rod 2. The return air channel 3 is axially arranged through the valve rod 2, and the upper end of the return air channel 3 is communicated with an exhaust channel 91. During filling, the gas in the container can be quickly discharged from the exhaust channel 91. The function of setting the return material channel 15 is that when the temperature of the material entering the valve cavity 11 does not meet the filling temperature, the material in the valve cavity 11 can be discharged through the return material channel 15. The lower port of the return material channel 15 is communicated with the bottom of the valve cavity 11, which can ensure that the material at the bottom of the valve cavity 11 is discharged through the return material channel 15. The return material control valve 16 is used to control the on-off of the return material channel 15.

[0023] In this embodiment, the driving mechanism includes: a valve cover 4 is arranged on the top of the valve body 1, an installation groove 41 sunken downward is arranged on the top of the valve cover 4, the upper end of the valve rod 2 extends out of the installation groove 41, a connecting sleeve 7 is sleeved on the valve rod 2 on the top of the valve body 1, a spring seat 8 is arranged outside the connecting sleeve 7, the spring seat 8 is fixed in the installation groove 41, a connecting ring 71 is arranged on the top of the connecting sleeve 7, a compression spring 81 is arranged between the connecting ring 71 and the spring seat 8, and a pressing block 9 is arranged on the top of the connecting sleeve 7. The pressing block 9, the connecting sleeve 7 and the valve rod 2 are hermetically fixed to each other. A closing valve cylinder 10 is arranged above the pressing block 9, the closing valve cylinder 10 is installed on the frame, the piston rod 101 of the closing valve cylinder 10 extends downward and can press against the top of the pressing block 9, driving the pressing block 9 to drive the connecting sleeve 7 and the valve rod 2 to move downward together, so as to drive the valve core 21 to move downward until the valve port 13 is separated from the valve cavity 11 to close the valve; after that, after the piston rod 101 of the closing valve cylinder 10 retracts upward and is separated from the pressing block 9, under the elastic force of the compression spring 81, the pressing block 9, the connecting sleeve 7 and the valve rod 2 move upward to return to the initial position, and the valve core 21 moves upward to make the valve port 13 communicate with the valve cavity 11 to open the valve.

[0024] Specifically, a tapered valve cavity section 111 with an inner diameter gradually decreasing from top to bottom is arranged at the lower end of the valve cavity 11. The inner wall of the tapered valve cavity section 111 is arc-transitioned to the inner wall of the valve port 13. A sealing gasket 211 is arranged at the lower end of the valve core 21. When the valve rod 2 moves downward, the sealing gasket 211 on the valve core 21 can be hermetically blocked on the inner wall of the tapered valve cavity 11 to close the valve, and when the valve rod 2 moves upward, the sealing gasket 211 on the valve core 21 can be separated from the inner wall of the tapered valve cavity section 111 to open the valve.

[0025] In this embodiment, the connection structure among the pressing block 9, the connecting sleeve 7 and the valve rod 2 includes: a tapered connection groove 72 with an inner diameter gradually decreasing from top to bottom is arranged at the upper end of the connecting sleeve 7, a tapered expansion sleeve 73 is arranged in the tapered connection groove 72, the tapered expansion sleeve 73 is sleeved on the valve rod 2, a sealing ring 22 is sleeved on the valve rod 2 above the tapered expansion sleeve 73, the sealing ring 22 makes the pressing block 9, the connecting sleeve 7 and the valve rod 2 sealed, and a locking bolt 74 is arranged between the pressing block 9 and the connecting ring 71 of the connecting sleeve 7. Tightening the locking bolt 74 can make the tapered expansion sleeve 73 expand and tighten in the tapered connection groove 72, so as to fix the pressing block 9, the connecting sleeve 7 and the valve rod 2 to each other. The exhaust passage 91 is arranged in the pressing block 9 and communicated with the exhaust port 92 on the outer wall of the pressing block. The top end of the air return passage 3 is connected to the exhaust passage 91. The connection structure among the pressing block 9, the connecting sleeve 7 and the valve rod 2 adopting the expansion connection method can offset the cumulative errors in processing, installation, etc., so as to facilitate installation and ensure the installation stability of the valve.

[0026] In this embodiment, a limiting groove 701 is provided on the connecting sleeve 7, and a limiting shaft 702 is arranged in the limiting groove 701. The limiting shaft 702 is connected to the spring seat 8 and the valve cover 4.

[0027] In addition, a dust-proof sleeve 17 is arranged outside the compression spring 81, and the upper end of the dust-proof sleeve 17 is fixedly connected to the pressing block 9. The dust-proof sleeve 17 can play a very good role in dust prevention.

[0028] A diversion sleeve 19 for guiding the material to move towards the inner wall of the valve cavity 11 is arranged outside the valve core 21. The structure of the diversion sleeve 19 includes: a sleeve body 191, and a plurality of diversion ribs 192 which are spirally downward and gradually guide towards the inner wall of the valve cavity 11 are further arranged on the outer wall of the sleeve body 191. A diversion channel 193 for guiding the liquid material to flow spirally downward and towards the inner wall of the valve cavity 11 is formed between adjacent diversion ribs 192. Under the guidance of the diversion sleeve 19, the material flows downward along the inner wall of the valve cavity 11, which can effectively reduce the generation of foam and thus improve the filling stability.

[0029] The advantages of the present invention are as follows: First, a contact type hot filling valve with a novel structure is provided, and a new filling method for hot filling is provided. The contact type filling shortens the distance between the valve port 13 and the container port, thereby effectively reducing the generation of foam and improving the hot filling stability. Second, the material that does not meet the temperature requirements can be discharged through the return channel 15, which effectively ensures the filling quality. Third, the structure is simple and practical, and the manufacturing cost is low. Fourth, the arrangement of the diversion sleeve 19 guides the material towards the inner wall of the valve cavity 11, which can further reduce the generation of foam and thus further improve the hot filling effect.

Claims

1. A contact thermal filling valve, comprising: The valve body with a valve cavity is provided with a feed port and a valve port on the valve body. The valve port is located at the bottom of the valve cavity. The valve stem axially penetrates through the valve cavity. A valve core is arranged at the lower end of the valve stem in the valve cavity. The upper end of the valve stem extends out of the valve body and is driven by a driving mechanism. The driving mechanism can drive the valve core to move up and down through the valve stem, so that the valve port is communicated with the valve cavity to open the valve, or the valve port is separated from the valve cavity to close the valve. A fixture for clamping a container is arranged directly below the valve port. The fixture is connected to a lifting driving mechanism on the rack. Driven by the lifting driving mechanism, the fixture can drive the clamped container to move upward until the mouth of the container presses against the bottom of the valve port, or move downward so that the container is separated from the bottom of the valve port. It is characterized in that: a return material channel is arranged in the side wall of the valve body. One end of the return material channel is communicated with the valve cavity, and the other end of the return material channel is connected to a return material control valve. The return material control valve is arranged on the outer wall of the valve body. A return air channel is arranged in the valve stem and axially penetrates through the valve stem. The upper end of the return air channel is communicated with an exhaust channel. The driving mechanism includes: a valve cover is arranged on the top of the valve body. A downwardly concave installation groove is arranged on the top of the valve cover. The upper end of the valve stem extends out of the installation groove. A connecting sleeve is sleeved on the valve stem at the top of the valve body. A spring seat is arranged outside the connecting sleeve and fixed in the installation groove. A connecting ring is arranged at the top of the connecting sleeve. A compression spring is arranged between the connecting ring and the spring seat. A pressing block is arranged at the top of the connecting sleeve. The pressing block, the connecting sleeve and the valve stem are hermetically fixed to each other. A closing valve cylinder is arranged above the pressing block. The closing valve cylinder is installed on the rack. The piston rod of the closing valve cylinder extends downward and can press against the top of the pressing block, driving the pressing block to drive the connecting sleeve and the valve stem to move downward together, so as to drive the valve core to move downward until the valve port is separated from the valve cavity to close the valve. After that, after the piston rod of the closing valve cylinder retracts upward and is separated from the pressing block, under the elastic force of the compression spring, the pressing block, the connecting sleeve and the valve stem move upward to return to the initial position, and the valve core moves upward to make the valve port communicate with the valve cavity to open the valve. The connection structure between the pressing block, the connecting sleeve and the valve stem includes: a tapered connection groove with a gradually decreasing inner diameter from top to bottom is arranged at the upper end of the connecting sleeve. A tapered expansion sleeve is arranged in the tapered connection groove. The tapered expansion sleeve is sleeved on the valve stem. A sealing ring is sleeved on the valve stem above the tapered expansion sleeve. The sealing ring makes the pressing block, the connecting sleeve and the valve stem airtight. A locking bolt is arranged between the pressing block and the connecting ring of the connecting sleeve. Tightening the locking bolt can make the tapered expansion sleeve expand tightly in the tapered connection groove, so as to fix the pressing block, the connecting sleeve and the valve stem to each other. The exhaust channel is arranged in the pressing block and communicated with an exhaust port on the outer wall of the pressing block. The top end of the return air channel is communicated with the exhaust channel. A limiting groove is arranged on the connecting sleeve, and a limiting shaft is arranged in the limiting groove. The limiting shaft is fixed to the spring seat and the valve cover.

2. The contact thermal filling valve according to claim 1, characterized in that: A dust-proof sleeve is arranged outside the compression spring. The upper end of the dust-proof sleeve is fixedly connected to the pressing block.

3. The contact thermal filling valve according to claim 1 or 2, characterized in that: A conical section valve cavity with a gradually decreasing inner diameter from top to bottom is provided at the lower end of the valve cavity. The inner wall of the conical section valve cavity is arc-transitioned to the inner wall of the valve port. A sealing gasket is provided at the lower end of the valve core. When the valve stem moves downward, the sealing gasket on the valve core can be sealed and blocked on the inner wall of the conical section valve cavity to close the valve. When the valve stem moves upward, the sealing gasket on the valve core can be separated from the inner wall of the conical section valve cavity to open the valve.

4. The contact thermal filling valve according to claim 1 or 2, characterized in that: An elastic corrugated pipe is sleeved on the valve stem in the valve cavity. Sealing rings are respectively provided at the upper and lower ends of the elastic corrugated pipe. The sealing ring at the upper end of the elastic corrugated pipe is hermetically fixed to the top of the valve body, and the sealing ring at the lower end of the elastic corrugated pipe is hermetically fixed to the top of the valve core.

5. The contact thermal filling valve according to claim 1 or 2, characterized in that: A flow guide sleeve is provided outside the valve core to guide the material to move towards the inner wall of the valve cavity.

6. The contact thermal filling valve according to claim 5, characterized in that: The structure of the flow guide sleeve includes: a sleeve body, and a plurality of flow guide ribs spiraling downward and gradually guiding towards the inner wall of the valve cavity are further provided on the outer wall of the sleeve body. A flow guide channel for guiding the liquid material to spiral downward and flow towards the inner wall of the valve cavity is formed between adjacent flow guide ribs.

7. The contact thermal filling valve according to claim 1 or 2, characterized in that: The lower port of the return material channel is communicated with the bottom of the valve cavity.

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