Carbon dioxide supercharging device of foaming equipment

Abstract

The utility model provides a foaming equipment carbon dioxide supercharging device which comprises a gas tank, one end of the gas tank is connected with a gas conveying pipe, the gas conveying pipe is connected with a main valve and a first pressure gauge close to the gas tank in series, the gas tank is connected with a supercharging cylinder through a first one-way gas supplementing pipeline, and the supercharging cylinder is connected with a buffer tank through a second one-way gas supplementing pipeline. A self-adaptive plug disc is arranged in the buffer tank, air inlet transfer pipes are arranged at the two ends of the buffer tank, and a first control valve is connected to the air inlet transfer pipes in series. According to the utility model, through the arrangement of the pressure cylinder, the one-way gas supplementing pipeline I, the one-way gas supplementing pipeline II and the buffer tank, the pressure cylinder can continuously supplement carbon dioxide gas into the gas tank during reciprocating motion, so that the gas pressure in the gas tank is in a relatively stable state; therefore, the flow of the carbon dioxide gas output by the gas tank through the gas delivery pipe is in a stable state.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid carbon dioxide pressurization, in particular to a carbon dioxide pressurization device for foaming equipment. Background Art

[0002] EVA materials are widely used in daily life products, such as shoes, packaging materials, sports equipment, sound insulation and thermal insulation products. Foaming EVA materials is one of the important links in the production process of EVA materials. The existing EVA foaming process uses chemical foaming agents for foaming. The foaming agent contains formamide, which is harmful to human health, and emits a strong pungent odor after foaming, which affects the use of the product and endangers the health of users.

[0003] In order to solve the above problems, supercritical carbon dioxide is usually used to foam EVA materials. The production of supercritical carbon dioxide requires a low temperature and pressurized environment. For this reason, such equipment needs to use carbon dioxide boosting equipment to obtain liquid carbon dioxide.

[0004] The utility model with publication number CN212987772U proposes a booster device for liquefied carbon dioxide, which belongs to the technical field of carbon dioxide equipment; it includes a carbon dioxide gas source, a delivery pipe, a booster pump, and a main valve, the carbon dioxide gas source is connected to the outside through the delivery pipe, the booster pump is installed on the delivery pipe, and a main valve is arranged between the carbon dioxide gas source and the booster pump; it also includes a branch pipe, a branch valve and a compressor, the branch pipe is connected to the delivery pipe between the main valve and the booster pump, the branch valve and the compressor are installed on the branch pipe in sequence, and the outlet end of the branch pipe is connected to the inlet end of the booster pump; the booster device of the utility model reduces the waste of the remaining amount of the carbon dioxide cylinder, avoids its discharge into the air to pollute the environment, has a high recycling rate, and is economical and environmentally friendly.

[0005] However, the above-mentioned prior art still has the following deficiencies when used: 1. It uses a compressor to assist in pressurizing the gas source carbon dioxide, so that the booster pump can operate normally, but this type of pressurization method has the problem of poor continuity of liquid carbon dioxide supply, that is, the compressor is not started until the gas source pressure drops to a certain value, and when the compressor starts, it will form an air pressure shock to the booster pump, making it impossible for the booster pump to output gas stably; 2. When the compressor starts, it will directly suck the gas in the gas source at negative pressure. Due to the large space in the gas source, the load of the compressor's air extraction increases, which will reduce the service life of the compressor.

[0006] To this end, the utility model provides a carbon dioxide boosting device for foaming equipment. Utility Model Content

[0007] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a carbon dioxide boosting device for foaming equipment to solve the problems raised in the above-mentioned background technology. The utility model greatly reduces the influence of the reduction of external gas source pressure on the stable output of liquid carbon dioxide, has the advantage of stable output of liquid carbon dioxide, and can achieve the boosting function without an air compressor, thereby reducing the cost investment.

[0008] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a carbon dioxide booster device for foaming equipment, including a gas tank, one end of the gas tank is connected to a gas supply pipe, the gas supply pipe is serially connected to a main valve and a pressure gauge close to the gas tank, the gas tank is connected to a booster cylinder through a one-way gas supply pipeline, the booster cylinder is connected to a buffer tank through a one-way gas supply pipeline, an adaptive plug disk is arranged in the buffer tank, and air intake transfer pipes are arranged at both ends, and a control valve is serially connected to the air intake transfer pipe.

[0009] Furthermore, the boost cylinder includes a cylinder body and a piston driving disk located in the cylinder body, and the number of the one-way air supply pipelines is two, and one end of each pipeline is respectively connected to the cavities on both sides of the piston driving disk in the cylinder body.

[0010] Furthermore, the one-way air supply pipeline II includes a main pipe, a shunt pipe and a drainage pipe. The outer wall of the shunt pipe is connected through the outer wall of the main pipe and the drainage pipe, and the inner cavities of the three are connected. Both ends of the shunt pipe are provided with one-way air outlet pipes respectively connected to the cavities on both sides of the piston driving disk in the cylinder body. The two ends of the drainage pipe are respectively connected to the inner cavities on both sides of the adaptive plug disk in the buffer tank. The drainage pipe is serially connected with a control valve II located on both sides of the main pipe.

[0011] Furthermore, a second pressure gauge is connected in series to the drainage pipe and is close to the buffer tank.

[0012] Furthermore, a lead screw is rotatably connected to the outer wall of the cylinder body, one side of the piston driving disk is fixedly connected to a traction plate located outside the cylinder body through a transmission shaft, and one end of the lead screw is rotatably connected to one side of the traction plate.

[0013] Furthermore, a control motor is fixedly connected to the outer peripheral wall of the cylinder body, and an output shaft of the control motor is rotatably connected to one end of the lead screw.

[0014] Furthermore, the control valve 1 is a one-way air supply valve.

[0015] The beneficial effects of the utility model are as follows:

[0016] 1. The utility model provides a booster cylinder, a one-way air supply pipeline 1, a one-way air supply pipeline 2 and a buffer tank, so that the booster cylinder can continuously add carbon dioxide gas to the gas tank during reciprocating motion, so that the gas pressure in the gas tank is in a relatively stable state, thereby making the flow rate of carbon dioxide gas output by the gas tank through the gas pipe in a stable state.

[0017] 2. In the utility model, an adaptive plug disc is arranged in the buffer tank. When the boost cylinder is in action, when the gas on one side of the adaptive plug disc in the buffer tank is inhaled through two pairs of one-way air supply pipelines, the adaptive plug disc will adaptively move to reduce the intake space, which can not only output the gas in the intake space to the maximum extent, but also reduce the load of the boost cylinder, which has the advantage of maximizing the use of the gas in the gas source and reducing waste.

[0018] 3. In the utility model, when the adaptive plug disc in the buffer tank moves, the cavities on both sides of the adaptive plug disc in the buffer tank will present a state of one enlarging and one shrinking. When the cavity enlarges, the flow rate of one of the gas sources to supplement the gas in the cavity will be accelerated, so that the buffer tank has the function of buffering gas supply and improves the stability of the gas supply from the buffer tank to the boost cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a carbon dioxide booster device for foaming equipment of the utility model;

[0020] Figure 2 for Figure 1 A top view of

[0021] Figure 3 The utility model is a schematic diagram of the cooperation between a lead screw and a boosting cylinder of a carbon dioxide boosting device of a foaming equipment.

[0022] In the figure: 1. gas tank; 2. one-way air supply pipeline 1; 3. booster cylinder; 31. cylinder body; 311. lead screw; 32. piston drive plate; 321. traction plate; 4. one-way air supply pipeline 2; 41. main pipe; 42. diverter pipe; 421. one-way air outlet pipe; 43. drainage pipe; 431. control valve 2; 432. pressure gauge 2; 5. buffer tank; 6. adaptive plug disc; 7. air intake transfer pipe; 71. control valve 1; 8. air supply pipe; 81. pressure gauge 1; 82. main valve; 9. control motor. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] See also Figures 1 to 3The utility model provides a technical solution: a carbon dioxide booster device for foaming equipment, including a gas tank 1, which is a turnover tank of carbon dioxide gas, one end of which is connected to a gas pipe 8, and a booster pump and a condenser far away from the gas tank 1 are also connected in series on the gas pipe 8, the purpose is to pressurize and cool the carbon dioxide, and finally make liquid carbon dioxide. This part can adopt the structure in the patent document mentioned in the background technology. A main valve 82 and a pressure gauge 81 close to the gas tank 1 are connected in series on the gas pipe 8, and the pressure gauge 81 is used to display the air pressure in the gas tank 1. The function of the main valve 82 is to control the on and off of the gas tank 1 and the external booster pump.

[0025] In the present technical solution, the gas tank 1 is connected to the booster cylinder 3 through a one-way gas supply pipeline 2. The function of the booster cylinder 3 is to add carbon dioxide gas to the gas tank 1 so that the pressure in the gas tank 1 is always in a stable state. After the air pressure in the gas tank 1 is stabilized, the flow rate of the liquid carbon dioxide gas output by the booster pump and the condenser is in a stable state.

[0026] The boost cylinder 3 is connected to a buffer tank 5 through a one-way air supply pipeline 4. The function of the buffer tank 5 is to provide carbon dioxide gas to the boost cylinder 3. An adaptive plug disc 6 is arranged in the buffer tank 5, and air intake transfer pipes 7 are arranged at both ends. One air intake transfer pipe 7 is connected to a corresponding carbon dioxide gas source, which can be a carbon dioxide gas cylinder. A control valve 71 is connected in series to the air intake transfer pipe 7. When the control valve 71 is opened, the two carbon dioxide gas sources will be connected to the inner cavities on both sides of the adaptive plug disc 6 in the buffer tank 5. When an inner cavity in the buffer tank 5 is exhausted to the outside, the adaptive plug disc 6 will automatically move to shrink the inner cavity so that the gas in the inner cavity can be extracted to the maximum extent. At the same time, another inner cavity in the buffer tank 5 will increase the characteristic of producing suction, thereby improving the efficiency of the buffer tank 5 in supplying air to the boost cylinder 3 and reducing the resistance to air supply.

[0027] Specifically, the boost cylinder 3 includes a cylinder body 31 and a piston driving disk 32 located in the cylinder body 31. There are two one-way air supply pipelines 2, and one end of each of them is respectively connected to the cavities on both sides of the piston driving disk 32 in the cylinder body 31. A one-way valve is arranged on the one-way air supply pipeline 2. When the piston driving disk 32 reciprocates, the two one-way air supply pipelines 2 will take turns to replenish the missing carbon dioxide gas in the gas tank 1.

[0028] Furthermore, the one-way air supply pipeline 24 includes a main pipe 41, a shunt pipe 42 and a drainage pipe 43. The outer wall of the shunt pipe 42 is connected through the outer wall of the main pipe 41 and the drainage pipe 43, and the inner cavities of the three are connected. Both ends of the shunt pipe 42 are provided with one-way air outlet pipes 421 respectively connected to the cavities on both sides of the piston drive disk 32 in the cylinder body 31. A one-way valve is also connected in series to the one-way air outlet pipe 421, so that the gas in the one-way air outlet pipe 421 can only flow into the cylinder body 31. The two ends of the drainage pipe 43 are respectively connected to the inner cavities on both sides of the adaptive plug disk 6 in the buffer tank 5. The drainage pipe 43 is connected in series with a control valve 2 431 located on both sides of the main pipe 41. Preferably, the control valve 1 71 is a one-way air supply valve, that is, the drainage pipe 43 can only flow in the direction of the main pipe 41.

[0029] In this embodiment, a second pressure gauge 432 is connected in series to the drainage tube 43 and is close to the buffer tank 5 . The function of the second pressure gauge 432 is to monitor the air pressure in the inner cavities on both sides of the adaptive plug disc 6 in the buffer tank 5 .

[0030] In this embodiment, a lead screw 311 is rotatably connected to the outer wall of the cylinder body 31, and one side of the piston driving disk 32 is fixedly connected to a traction plate 321 located outside the cylinder body 31 through a transmission shaft. One end of the lead screw 311 is rotatably connected to one side of the traction plate 321. When the lead screw 311 rotates forward and reverse, it will drive the traction plate 321 to move, and then drive the piston driving disk 32 to reciprocate in the cylinder body 31.

[0031] Furthermore, a control motor 9 is fixedly connected to the outer peripheral wall of the cylinder body 31, and an output shaft of the control motor 9 is rotatably connected to one end of the lead screw 311. The control motor 9 provides a driving force for the rotation of the lead screw 311.

[0032] Working principle: When it is necessary to pressurize and convert the carbon dioxide gas, open the main valve 82, start the external booster pump and condensing device, and output the carbon dioxide gas from the gas tank 1 to the booster cylinder 3 through the gas pipe 8. The gas in the gas tank 1 decreases, and the reading of the pressure gauge 81 decreases. At this time, start the control motor 9, the screw 311 rotates through the traction plate 321 to drive the piston drive disk 32 to move in the cylinder 31, and a cavity in the cylinder 31 is reduced. The carbon dioxide gas in the reduced cavity enters the gas tank 1 to supplement the missing gas. At the same time, the gas in a cavity in the buffer tank 5 will supplement the gas in the main pipe 41 through one of the shunt pipes 42 and the one-way gas outlet pipe 421 on the shunt pipe 42, and then enter the cavity with an increased volume in the cylinder 31. The reciprocating motion of the piston drive disk 32 will cause the carbon dioxide gas in the two cavities in the buffer tank 5 to be transmitted to the gas tank 1 in turn.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A carbon dioxide booster device for a foaming device, comprising a gas tank (1), one end of the gas tank (1) being connected to a gas delivery pipe (8), the gas delivery pipe (8) being serially connected to a main valve (82) and a pressure gauge (81) close to the gas tank (1), characterized in that: The gas tank (1) is connected to a booster cylinder (3) via a one-way gas supply pipeline (2), and the booster cylinder (3) is connected to a buffer tank (5) via a one-way gas supply pipeline (4). An adaptive plug disc (6) is provided in the buffer tank (5), and both ends of the buffer tank (5) are provided with an air intake transfer pipe (7), and a control valve (71) is connected in series to the air intake transfer pipe (7).

2. A carbon dioxide boosting device for foaming equipment according to claim 1, characterized in that: The boost cylinder (3) comprises a cylinder body (31) and a piston drive disk (32) located in the cylinder body (31); the number of the one-way air supply pipelines (2) is two, and one end of each of the two pipelines is respectively connected to the cavities on both sides of the piston drive disk (32) in the cylinder body (31).

3. A carbon dioxide boosting device for foaming equipment according to claim 2, characterized in that: The one-way air supply pipeline (4) comprises a main pipe (41), a shunt pipe (42) and a drainage pipe (43); the outer wall of the shunt pipe (42) is connected through the outer walls of the main pipe (41) and the drainage pipe (43), and the inner cavities of the three are connected; both ends of the shunt pipe (42) are provided with one-way air outlet pipes (421) respectively connected to the cavities on both sides of the piston drive disk (32) in the cylinder body (31); both ends of the drainage pipe (43) are respectively connected to the inner cavities on both sides of the adaptive plug disk (6) in the buffer tank (5); and the drainage pipe (43) is connected in series with a control valve (431) located on both sides of the main pipe (41).

4. A carbon dioxide boosting device for foaming equipment according to claim 3, characterized in that: A second pressure gauge (432) is connected in series to the drainage pipe (43) and is close to the buffer tank (5).

5. The carbon dioxide boosting device for foaming equipment according to claim 2, characterized in that: The outer wall of the cylinder body (31) is rotatably connected to a lead screw (311); one side of the piston drive plate (32) is fixedly connected to a traction plate (321) located outside the cylinder body (31) via a transmission shaft; one end of the lead screw (311) is rotatably connected to one side of the traction plate (321).

6. A carbon dioxide boosting device for foaming equipment according to claim 5, characterized in that: A control motor (9) is fixedly connected to the outer peripheral wall of the cylinder body (31), and an output shaft of the control motor (9) is rotatably connected to one end of a lead screw (311).

7. The carbon dioxide boosting device for foaming equipment according to claim 1, characterized in that: The control valve 1 (71) is a one-way air supply valve.

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