A bottle holder device in an isobaric filling machine

Abstract

The application discloses a bottle supporting device in an isobaric filling machine, an upper mounting plate is arranged on the outer wall of the upper part of a liquid cylinder, an upper mounting hole is arranged in the upper mounting plate, an upper sliding sleeve is inserted into the upper mounting hole, a sliding cylinder is arranged above the upper mounting plate, a piston and a sliding rod are arranged in the sliding cylinder, the upper end of the sliding rod is fixed with the piston, the lower end of the sliding rod is downwardly penetrated through the upper mounting plate via the upper sliding sleeve and is provided with a bottle clamp, a lifting block is fixed to the lower part of the sliding rod, a roller corresponding to the lifting block and moving along a cam guide is arranged on the lifting block, a lower sealing element is arranged between the lower end of the sliding cylinder and the sliding rod, the upper end surface of the piston and the inner wall of the sliding cylinder jointly form an upper chamber, the lower end surface of the piston, the inner wall of the sliding cylinder, the outer wall of the sliding rod and the lower sealing element jointly form a lower chamber which is opposite to the upper chamber, an oil inlet and outlet hole connected with a hydraulic station is arranged on the side wall of the sliding cylinder where the lower chamber is located, and a rotation stopping mechanism is arranged between the sliding rod and the liquid cylinder. The application has the advantages of high stability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of isobaric filling equipment, in particular to a bottle supporting device in an isobaric filling machine. BACKGROUND

[0002] Isobaric filling, also known as pressure gravity filling, is a commonly used filling method. During filling, a gas with a pressure greater than atmospheric pressure is filled into a bottle to be filled, and the liquid cylinder also has the same pressure. The material flows into the bottle to be filled by gravity. The bottle supporting device is an important component of the isobaric filling machine. It corresponds to the filling valve located above. Its role is to lift the bottle to be filled to close contact with the filling head at the filling station for filling, and then lower it back after the filling process is completed. The structure of the bottle supporting device currently used includes: an upper mounting plate is arranged on the outer wall of the upper part of the liquid cylinder, an upper mounting hole is arranged on the upper mounting plate, an upper sliding sleeve is arranged in the upper mounting hole, a sliding cylinder is installed at the bottom of the upper mounting plate, the lower cylinder port of the sliding cylinder is closed and the upper cylinder port is open, the upper cylinder port of the sliding cylinder is vertically installed at the bottom of the upper mounting plate and faces upward to the upper mounting hole, a piston and a sliding rod are arranged in the sliding cylinder, the piston separates the sliding cylinder into an upper cavity and a lower cavity, the lower end of the sliding rod passes through the sliding sleeve and the upper mounting plate, the lower end of the sliding rod passes out of the sliding cylinder and is provided with a bottle clamp, a lifting block is fixed on the sliding rod, a roller corresponding upward and moving along the cam guide is installed on the lifting block, and an oil inlet and outlet hole connected with the hydraulic station is arranged on the side wall of the lower cavity of the sliding cylinder. The bottle supporting device has the following disadvantages: (1) during the filling process, beverage and other filling liquids will inevitably splash onto the top of the upper mounting plate. The filling liquid splashed onto the top of the upper mounting plate will gradually corrode the upper sliding sleeve and the sliding rod, causing a gap between the upper sliding sleeve and the sliding rod, and entering the sliding cylinder from the gap between the upper sliding sleeve and the sliding rod, and corroding the sliding cylinder and the piston, resulting in unstable sliding of the sliding rod, and in severe cases, the sliding rod cannot slide; (2) the up and down position of the bottle clamp cannot be adjusted, which is inconvenient to use. SUMMARY

[0003] The purpose of the present application is to provide a bottle supporting device in an isobaric filling machine with high stability.

[0004] To achieve the above object, the present application adopts the following technical scheme: a bottle supporting device in an isobaric filling machine, an upper mounting plate is arranged on the outer wall of the upper part of a liquid cylinder, an upper mounting hole is arranged in the upper mounting plate, an upper sliding sleeve is inserted into the upper mounting hole, a sliding cylinder with a closed upper end and an open lower end is arranged above the upper mounting plate, the lower end of the sliding cylinder is vertically mounted on the top of the upper mounting plate and faces the upper mounting hole, a piston and a sliding rod are arranged in the sliding cylinder, the piston is in contact with the inner wall of the sliding cylinder, the upper end of the sliding rod is fixed with the piston, the lower end of the sliding rod passes through the upper mounting plate downwardly and is mounted with a bottle clamp, a lifting block is fixed on the lower part of the sliding rod which passes through the upper mounting plate, a roller is mounted on the lifting block and moves along the cam guide rail, a lower sealing element is arranged between the lower end of the sliding cylinder and the sliding rod to seal the gap between them, the upper end surface of the piston and the inner wall of the sliding cylinder jointly form an upper chamber, the lower end surface of the piston, the inner wall of the sliding cylinder, the outer wall of the sliding rod and the lower sealing element jointly form a lower chamber which is independent of the upper chamber, an oil inlet and outlet hole connected with a hydraulic station is arranged on the side wall of the sliding cylinder where the lower chamber is located, and a rotation stopping mechanism is arranged between the sliding rod and the liquid cylinder to prevent the rotation of the sliding rod during lifting.

[0005] Further, the bottle supporting device in the isobaric filling machine, wherein: the structure of the rotation stopping mechanism comprises: a lower mounting plate is arranged on the outer wall of the lower part of the liquid cylinder, a vertical rotation stopping groove plate is fixed on the lower mounting plate, a vertical long hole is arranged on the rotation stopping groove plate, a rotation stopping guide wheel is fixed on one side of the lifting block and extends into the vertical long hole of the rotation stopping groove plate and can move along the vertical long hole.

[0006] Further, the bottle supporting device in the isobaric filling machine, wherein: a lower mounting hole is arranged on the lower mounting plate, a lower sliding sleeve is inserted into the lower mounting hole, and the lower end of the sliding rod passes through the upper sliding sleeve and the lower sliding sleeve in sequence and is mounted with the bottle clamp.

[0007] Further, the bottle supporting device in the isobaric filling machine, wherein: the structure of the lower sealing element comprises: a lower sealing ring groove is arranged on the inner wall of the lower part of the sliding cylinder, a lower sealing ring is placed in the lower sealing ring groove, the inner circumferential surface of the lower sealing ring is in contact with the outer wall of the sliding rod, the outer circumferential surface of the lower sealing ring is in contact with the inner wall of the sliding cylinder, a first V-shaped groove with a V-shaped cross section is arranged on the upper end surface of the lower sealing ring, the first V-shaped groove divides the upper part of the lower sealing ring into a first inner sealing part in contact with the outer wall of the sliding rod and a first outer sealing part in contact with the inner wall of the sliding cylinder, and the first V-shaped groove is connected with the lower chamber upwardly.

[0008] Further, the bottle holder device of the isobaric filling machine, wherein the piston is in contact with the inner wall of the slide cylinder through the upper sealing element, the structure of the upper sealing element comprises: an upper sealing ring groove is arranged on the outer wall of the piston, an upper sealing ring is arranged in the upper sealing ring groove, the inner circumferential surface of the upper sealing ring is in contact with the outer wall of the piston, the outer circumferential surface of the upper sealing ring is in contact with the inner wall of the slide cylinder, a second V-shaped notch with V-shaped cross section is arranged on the lower end surface of the upper sealing ring, the second V-shaped notch divides the lower part of the upper sealing ring into a second inner sealing part in contact with the outer wall of the piston and a second outer sealing part in contact with the inner wall of the slide cylinder, and the second V-shaped notch is in communication with the lower chamber.

[0009] Further, the bottle holder device of the isobaric filling machine, wherein the specific mounting structure of the bottle clamp on the slide rod comprises: a threaded hole for the compression bolt is arranged on the lower end surface of the slide rod, an adjustable sleeve is fixed on the lower end of the slide rod, an external thread is arranged on the lower part of the outer wall of the adjustable sleeve, a threaded ring is threadedly connected to the external thread of the adjustable sleeve so that the threaded ring can move upward or downward relative to the adjustable sleeve, a bottle clamp plate is arranged on the bottle clamp, a first through hole is arranged on the end of the bottle clamp plate, the bottle clamp plate is sleeved on the slide rod through the first through hole and abuts against the lower end surface of the threaded ring, a compression gasket is arranged below the bottle clamp plate, a recess is arranged on the upper end surface of the compression gasket for the lower end of the slide rod to be inserted, a second through hole is arranged on the bottom wall of the recess of the compression gasket for the compression bolt to pass through, the compression gasket is sleeved on the lower end of the slide rod through the recess, and the bolt of the compression bolt is screwed into the threaded hole on the lower end surface of the slide rod through the second through hole of the compression gasket, when the compression bolt is screwed upward, the compression bolt can clamp and fix the bottle clamp plate on the threaded ring through the compression gasket, so as to fix the bottle clamp on the slide rod.

[0010] Through implementation of the technical scheme, the beneficial effects of the present application are: (1) the slide cylinder is arranged above the upper mounting plate and sleeved outside the upper slide sleeve, which not only facilitates maintenance, but also avoids corrosion of the filling liquid to the upper slide sleeve and the slide rod, effectively prevents the filling liquid from entering the inside of the slide cylinder, ensures the sliding stability of the slide rod, and further improves the overall use stability of the device; (2) the oil inlet and outlet hole is arranged on the side wall of the slide cylinder where the lower chamber is located, which is more convenient for oiling, and the hydraulic station supplies oil to or discharges oil from the lower chamber through the oil inlet and outlet hole during work, so that the lower chamber maintains a certain oil pressure, and the piston and the slide rod always have a tendency to move upward, and further the roller can always move upward along the cam rail, and due to the existence of the oil pressure in the lower chamber, the filling liquid is also effectively prevented from entering the inside of the slide cylinder through the gap between the slide cylinder and the upper slide sleeve and the gap between the upper slide sleeve and the slide rod, further improving the overall use stability of the device; (3) the V-shaped structure design of the lower sealing element improves the sealing performance between the slide cylinder and the slide rod, further prevents the filling liquid from entering the inside of the slide cylinder through the gap between the slide cylinder and the upper slide sleeve and the gap between the upper slide sleeve and the slide rod, and further improves the overall use stability of the device; (4) the up-and-down position of the bottle clamp can be finely adjusted, which is more convenient to use; (5) through the design of the rotation stopping groove plate, the rotation of the slide rod during lifting or lowering is effectively prevented, and the use stability of the equipment is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a structure schematic view of a bottle support device in the isobaric filling machine.

[0012] Figure 2 It is a structure schematic view of a bottle support device in the isobaric filling machine. Figure 1 It is an enlarged structure schematic view of E part shown in the isobaric filling machine.

[0013] Figure 3 It is an enlarged structure schematic view of F part shown in the isobaric filling machine. Figure 1

[0014] Figure 4 It is a structure schematic view of the rotation stopping groove plate.

[0015] Figure 5 It is a structure schematic view of the lower sealing element.

[0016] Figure 6 It is a structure schematic view of the upper sealing element. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples.

[0018] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 ​、 Figure 6 As shown in the figure, the bottle holder device in the isobaric filling machine is provided with an upper mounting plate 2 on the outer wall of the upper part of the liquid cylinder 1, an upper mounting hole is arranged in the upper mounting plate 2, an upper sliding sleeve 4 is inserted into the upper mounting hole, a sliding cylinder 3 with a closed upper end and an open lower end is arranged above the upper mounting plate, the lower end of the sliding cylinder 3 is opposite to the upper mounting hole and is vertically mounted on the top of the upper mounting plate 2 by being sleeved on the outside of the upper sliding sleeve 4, a piston 5 and a sliding rod 6 are arranged in the sliding cylinder 3, the piston 5 is in contact with the inner wall of the sliding cylinder 3 to seal it, the upper end of the sliding rod 6 is fixed with the piston 5, the lower end of the sliding rod 6 penetrates the upper mounting plate downward through the upper sliding sleeve 4 and is mounted with a bottle clamp 7, a lifting block 8 is fixed on the lower part of the sliding rod 6 which penetrates the upper mounting plate 2, a roller 10 which moves along the cam guide rail 9 in correspondence with the lifting block 8 is mounted on the lifting block 8, a lower sealing element 11 is arranged between the lower end of the sliding cylinder 3 and the sliding rod 6 to seal the gap between them, the upper end surface of the piston 5 and the inner wall of the sliding cylinder 3 jointly form an upper chamber 12, the lower end surface of the piston 5, the inner wall of the sliding cylinder 3, the outer wall of the sliding rod 6 and the lower sealing element 11 jointly form a lower chamber 13 which is independent of the upper chamber 12, an inlet and outlet oil hole 14 connected with the hydraulic station is arranged on the side wall of the sliding cylinder 3 where the lower chamber 13 is located, and a rotation stopping mechanism is arranged between the sliding rod 6 and the liquid cylinder 1 to prevent the sliding rod 6 from rotating during lifting and lowering; during operation, the hydraulic station fills or discharges oil to the lower chamber 13 through the inlet and outlet oil hole 14, so that the lower chamber 13 maintains a certain oil pressure, and the piston 5 and the sliding rod 6 always have a tendency to move upward, and then the roller 10 can always move upward along the cam guide rail 9, during the lifting or lowering of the roller 10 along the cam guide rail 9, the sliding rod 6 will be lifted or lowered with the roller 10, synchronously driving the bottle clamp 7 to be lifted or lowered, and then driving the bottle to be lifted to closely contact with the filling head for filling or to be lowered to reset and leave the filling head;

[0019] In the embodiment, the structure of the rotation stopping mechanism includes that a lower mounting plate 15 is arranged on the outer wall of the lower part of the liquid cylinder 1, a vertical rotation stopping groove plate 16 is fixed on the lower mounting plate 15, a vertical long hole 17 is arranged on the rotation stopping groove plate 16, and a rotation stopping guide wheel 18 is fixed on one side of the lifting block 8, the rotation stopping guide wheel 18 extends into the vertical long hole 17 of the rotation stopping groove plate 16 and can move along the vertical long hole 17, the above rotation stopping mechanism has simple structure and is convenient to install and maintain, can effectively prevent the sliding rod 6 from rotating during lifting or lowering, and ensures the stability of the equipment during use; in the embodiment, a lower mounting hole is arranged on the lower mounting plate 15, a lower sliding sleeve 19 is inserted into the lower mounting hole, and the lower end of the sliding rod 6 is sequentially inserted into the upper sliding sleeve 4 and the lower sliding sleeve 19 and then mounted with the bottle clamp 7, so that the stability of the sliding rod 6 during lifting and lowering can be improved;

[0020] In the embodiment, the structure of the lower seal 11 comprises: a lower seal ring groove is arranged on the inner wall of the lower part of the slide cylinder 3, a lower seal ring 111 is placed in the lower seal ring groove, the inner circumferential surface of the lower seal ring 111 is in contact with the outer wall of the slide rod 6 for sealing, the outer circumferential surface of the lower seal ring 111 is in contact with the inner wall of the slide cylinder 3 for sealing, a first V-shaped groove 112 with a V-shaped cross section is arranged on the upper end surface of the lower seal ring 111, the first V-shaped groove 112 divides the upper part of the lower seal ring 111 into a first inner sealing part 113 in contact with the outer wall of the slide rod 6 and a first outer sealing part 114 in contact with the inner wall of the slide cylinder 3, and the first V-shaped groove 112 is in communication with the lower chamber 13 upward; due to the fact that a certain oil pressure is always maintained in the lower chamber 13, under the action of the oil pressure, the first inner sealing part 113 and the first outer sealing part 114 of the lower seal ring 111 will be respectively expanded to the inner and outer sides, so that the first inner sealing part 113 is tightly in contact with the outer wall of the slide rod 6 inward, and at the same time, the first outer sealing part 114 is tightly in contact with the inner wall of the slide cylinder 3 outward, thereby effectively sealing the gap between the slide rod 6 and the slide cylinder 3, achieving good sealing effect, avoiding the splashed beverage from entering the inside of the slide cylinder through the gap between the slide rod and the slide cylinder, preventing the inside of the slide cylinder from being corroded by the beverage, improving the use stability, and further improving the use stability because the oil pressure in the lower chamber can also prevent the beverage from entering the inside of the slide cylinder through the gap between the slide rod and the slide cylinder.

[0021] In the embodiment, the piston 5 is in contact with the inner wall of the slide cylinder 3 through the upper seal 20, and the structure of the upper seal 20 comprises: an upper seal ring groove is arranged on the outer wall of the piston 5, an upper seal ring 201 is placed in the upper seal ring groove, the inner circumferential surface of the upper seal ring 201 is in contact with the outer wall of the piston 5 for sealing, the outer circumferential surface of the upper seal ring 201 is in contact with the inner wall of the slide cylinder 3 for sealing, a second V-shaped groove 202 with a V-shaped cross section is arranged on the lower end surface of the upper seal ring 201, the second V-shaped groove 202 divides the lower part of the upper seal ring 201 into a second inner sealing part 203 in contact with the outer wall of the piston 5 and a second outer sealing part 204 in contact with the inner wall of the slide cylinder 3, and the second V-shaped groove 202 is in communication with the lower chamber 13 downward; due to the fact that a certain oil pressure is always maintained in the lower chamber 13, under the action of the oil pressure, the second inner sealing part 203 and the second outer sealing part 204 of the upper seal ring 201 will be respectively expanded to the inner and outer sides, so that the second inner sealing part 203 is tightly in contact with the outer wall of the piston 5 inward, and at the same time, the second outer sealing part 204 is tightly in contact with the inner wall of the slide cylinder 3 outward, thereby effectively sealing the gap between the piston 5 and the slide cylinder 3, achieving good sealing effect.

[0022] In the embodiment, the specific mounting structure of the bottle clamp 7 on the slide rod 6 comprises: a threaded hole for the compression bolt 21 to be screwed into is arranged on the lower end face of the slide rod 6, an adjustable sleeve 22 is fixed on the lower end of the slide rod 6, an external thread is arranged on the lower part of the outer wall of the adjustable sleeve 22, a threaded ring 23 is threadedly connected to the external thread of the adjustable sleeve 22 so that the threaded ring 23 can move upward or downward relative to the adjustable sleeve 22, a bottle clamp plate 24 is arranged on the bottle clamp 7, a first through hole into which the slide rod 6 is to be fitted is arranged on the end of the bottle clamp plate 24, the bottle clamp plate 24 is fitted into the slide rod 6 through the first through hole and abuts against the lower end face of the threaded ring 23 upwardly, a compression gasket 25 is arranged below the bottle clamp plate 24, a recess 251 into which the lower end of the slide rod 6 is to be inserted is arranged on the upper end face of the compression gasket 25, the recess 251 is used to ensure that the compression gasket 25 has a margin for moving upward along the slide rod 6, a second through hole through which the compression bolt 21 is to pass is arranged on the recess bottom wall of the compression gasket 25, the compression gasket 25 is fitted on the lower end of the slide rod 6 through the recess 251, the bolt of the compression bolt 21 is screwed into the threaded hole on the lower end face of the slide rod 6 through the second through hole of the compression gasket 25, when the compression bolt 21 is screwed upward, the compression bolt 21 can clamp and fix the bottle clamp plate 24 on the threaded ring 23 through the compression gasket 25, thereby fixing the bottle clamp 7 on the slide rod 6, the bottle clamp mounting structure is simple, convenient to disassemble and assemble, the up-down position of the bottle clamp can be finely adjusted, and the bottle clamp is more convenient to use.

[0023] The advantages of the present application are: (1) the slide cylinder is arranged above the upper mounting plate and outside the upper slide sleeve, which not only facilitates maintenance, but also avoids corrosion of the upper slide sleeve and the slide rod by the filling liquid, effectively prevents the filling liquid from entering the inside of the slide cylinder, ensures the stability of the slide of the slide rod, and further improves the overall use stability of the device; (2) the oil inlet and outlet holes are arranged on the side wall of the slide cylinder where the lower chamber is located, which not only makes oiling more convenient, but also enables the hydraulic station to fill or drain the lower chamber through the oil inlet and outlet holes during work, so that the lower chamber maintains a certain oil pressure, the piston and the slide rod always have a tendency to move upward, and the roller always moves upward along the cam guide, and due to the existence of the oil pressure in the lower chamber, the filling liquid is also effectively prevented from entering the inside of the slide cylinder through the gap between the slide cylinder and the upper slide sleeve and the gap between the upper slide sleeve and the slide rod, further improving the overall use stability of the device; (3) the V-shaped structure design of the lower sealing element improves the sealing performance between the slide cylinder and the slide rod, further prevents the filling liquid from entering the inside of the slide cylinder through the gap between the slide cylinder and the upper slide sleeve and the gap between the upper slide sleeve and the slide rod, and further improves the overall use stability of the device; (4) the up-down position of the bottle clamp can be finely adjusted, and the bottle clamp is more convenient to use; (5) through the design of the rotation stopping groove plate, the rotation of the slide rod during lifting or lowering can be effectively prevented, and the use stability of the equipment is ensured.

[0024] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any other form, and any modification or equivalent variation made according to the technical essence of the present application still falls within the scope of the present application.

Claims

1. A bottle support device in an isobaric filling machine, characterized in that: An upper mounting plate is provided on the outer wall of the upper part of the liquid cylinder, an upper mounting hole is provided in the upper mounting plate, an upper sliding sleeve is inserted into the upper mounting hole, a sliding cylinder with an upper cylinder mouth closed and a lower cylinder mouth open is provided above the upper mounting plate, the lower cylinder mouth of the sliding cylinder faces downward to the upper mounting hole and is sleeved on the outside of the upper sliding sleeve and vertically installed on the top of the upper mounting plate, a piston and a sliding rod are provided in the sliding cylinder, the piston is in contact and sealed with the inner wall of the sliding cylinder, the upper end of the sliding rod is fixed to the piston, the lower end of the sliding rod passes through the upper mounting plate downward through the upper sliding sleeve and is installed with a bottle clamp, and the sliding rod that passes through the upper mounting plate A lifting block is fixed to the lower part of the rod, and a roller corresponding upward and moving along the cam guide is installed on the lifting block. A lower seal is provided between the lower end of the slide and the slide rod to seal the gap between the two. The upper end surface of the piston and the inner wall of the slide together form an upper chamber. The lower end surface of the piston, the inner wall of the slide, the outer wall of the slide and the lower seal together form a lower chamber relatively independent of the upper chamber. The side wall of the slide where the lower chamber is located is provided with oil inlet and outlet holes connected to the hydraulic station. A rotation-stop mechanism is provided between the slide rod and the hydraulic cylinder to prevent the slide rod from rotating during the lifting process. The specific installation structure of the bottle clamp on the slide bar includes: a threaded hole for screwing a tightening bolt is provided on the lower end surface of the slide bar, an adjustable sleeve is fixed on the lower end of the slide bar, an external thread is provided on the lower outer wall of the adjustable sleeve, the thread ring is threadedly connected to the external thread of the adjustable sleeve so that the thread ring can move upward or downward relative to the adjustable sleeve, a bottle clamp is provided on the bottle clamp, a first through hole that can be inserted into the slide bar is provided at the end of the bottle clamp, the bottle clamp is upwardly inserted into the slide bar through the first through hole and presses upward against the thread ring The lower end surface is provided with a compression gasket under the bottle clamping plate, a groove for inserting the lower end of the slide rod is provided on the upper end surface of the compression gasket, and a second through hole for passing the compression bolt is provided on the bottom wall of the groove of the compression gasket. The compression gasket is sleeved on the lower end of the slide rod through the groove, and the bolt of the compression bolt is screwed into the threaded hole on the lower end surface of the slide rod through the second through hole of the compression gasket. When the compression bolt is tightened upward, the compression bolt can clamp the bottle clamping plate on the threaded ring through the compression gasket, thereby fixing the bottle clamp on the slide rod; The structure of the anti-rotation mechanism includes: a lower mounting plate is provided on the outer wall of the lower part of the hydraulic cylinder, a vertical anti-rotation groove plate is fixed on the lower mounting plate, a vertical long hole is provided on the anti-rotation groove plate, and an anti-rotation guide wheel is fixed on one side of the lifting block, and the anti-rotation guide wheel extends into the vertical long hole of the anti-rotation groove plate and can move along the vertical long hole.

2. The bottle support device in the isobaric filling machine according to claim 1, characterized in that: A lower mounting hole is provided on the lower mounting plate, a lower sliding sleeve is inserted into the lower mounting hole, and the lower end of the slide rod is sequentially passed through the upper sliding sleeve and the lower sliding sleeve and then a bottle clamp is installed.

3. The bottle support device in the isobaric filling machine according to claim 1, characterized in that: The structure of the lower seal includes: a lower sealing ring groove is provided on the lower inner wall of the slide, a lower sealing ring is placed in the lower sealing groove, the inner peripheral surface of the lower sealing ring is in contact and sealed with the outer wall of the slide rod, the outer peripheral surface of the lower sealing ring is in contact and sealed with the inner wall of the slide, and a first V-shaped notch with a V-shaped cross-section is provided on the upper end face of the lower sealing ring. The first V-shaped notch divides the upper part of the lower sealing ring into a first inner sealing part in contact with the outer wall of the slide rod, and a first outer sealing part in contact with the inner wall of the slide, and the first V-shaped notch is connected to the lower chamber upward.

4. The bottle support device in the isobaric filling machine according to claim 1, characterized in that: The piston is in contact and sealed with the inner wall of the slide cylinder through an upper seal. The structure of the upper seal includes: an upper sealing ring groove is provided on the outer wall of the piston, an upper sealing ring is placed in the upper sealing groove, the inner peripheral surface of the upper sealing ring is in contact and sealed with the outer wall of the piston, the outer peripheral surface of the upper sealing ring is in contact and sealed with the inner wall of the slide cylinder, and a second V-shaped groove with a V-shaped cross-section is provided on the lower end surface of the upper sealing ring. The second V-shaped groove divides the lower part of the upper sealing ring into a second inner sealing part contacting the outer wall of the piston and a second outer sealing part contacting the inner wall of the slide cylinder. The second V-shaped groove is downwardly connected to the lower chamber.

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