Tail gas buffering device for safe production of food-grade dry ice

Abstract

The utility model discloses a tail gas buffering device for safe production of food-grade dry ice, and relates to the technical field of dry ice production. A cylinder cover is in threaded connection with the upper portion of the gas collection cylinder, a storage tank is arranged on the side of the gas collection cylinder, a buffering assembly is arranged in the middle of the lower portion of the cylinder cover and comprises a U-shaped gas pipe arranged below the cylinder cover, and a movable plate arranged below the U-shaped gas pipe is movably connected with the inner side wall of the gas collection cylinder. Through holes are formed in the upper portion of the movable plate in an annular array mode, a second connecting rod is fixedly connected to the middle of the lower portion of a second piston abutting against the lower end of one side in the U-shaped air pipe, the lower end of the second connecting rod is connected with one side of the upper portion of the movable plate, and a first connecting rod is fixedly connected to the middle of the lower portion of a first piston abutting against the upper portion of the other side in the U-shaped air pipe. A material guiding assembly is arranged on the inner bottom side wall of the storage tank. According to the utility model, the buffering effect on tail gas is effectively improved, the protection effect on the buffering assembly is improved, the use amount of electric energy is reduced, and the purpose of saving energy is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of dry ice production, and particularly relates to an exhaust gas buffer device for the safe production of food-grade dry ice. Background Technique

[0002] During the safe production of food-grade dry ice, exhaust gas will be generated. In order to reduce the damage of the exhaust gas to the environment, the staff operate the exhaust gas recovery equipment to collect and reprocess the exhaust gas uniformly. However, the gaseous carbon dioxide exhaust gas generated during the preparation of food-grade dry ice will increase rapidly in a short period of time, which will cause the processing pressure of the exhaust gas recovery equipment to increase rapidly, resulting in the processing load of the exhaust gas recovery equipment exceeding its processing capacity, easily causing damage to the exhaust gas recovery equipment. It is necessary to install an exhaust gas buffer device inside the exhaust gas recovery equipment to reduce the adverse impact of the exhaust gas on the exhaust gas recovery equipment.

[0003] After retrieval, a patent document with the patent publication number CN219473410U discloses an exhaust gas buffer device for dry ice production, which relates to the technical field of dry ice production; the buffering effect of the dry ice exhaust gas is not ideal, and a large amount of exhaust gas cannot be effectively dispersed and buffered. It includes a gas collection cylinder, and a waste collection cylinder is arranged at the bottom end inside the gas collection cylinder. A filter screen is horizontally installed on the top of the waste collection cylinder. A buffer chamber is arranged directly above the top end face of the filter screen. A conical cover is sleeved on the outer circle of the bottom end of the buffer chamber. An air flow hole is opened in the middle of the bottom end face of the buffer chamber. A hollow buffer plate is arranged directly above the air flow hole. The outer circle of the hollow buffer plate is in sliding contact with the inner wall of the buffer chamber; the pressure generated by the aggregation of the exhaust gas pushes the hollow buffer plate to move upward, and the hydraulic cylinder installed between the top end face and the inner wall of the buffer chamber is compressed to achieve a buffering effect, and the exhaust gas is dispersed by combining with the flow dividing plate to prevent a large amount of exhaust gas from aggregating to generate a large pressure.

[0004] However, it still has the following drawbacks in actual use:

[0005] 1. For the existing exhaust gas buffer device for dry ice production, during use, through the buffer chamber and the hollow buffer plate cooperating with the hydraulic cylinder, the upward moving exhaust gas inside the gas collection cylinder is buffered, but it can only buffer the exhaust gas in a single direction, resulting in an unsatisfactory buffering effect on the exhaust gas, and even having an adverse impact on the components for buffering the exhaust gas, which will further reduce the buffering effect of the exhaust gas;

[0006] 2. For the existing exhaust gas buffer device for dry ice production, during use, the motor drives a series of connecting components to rotate, driving the rotating nozzle to rotate, so as to disperse the exhaust gas inside the storage tank, reduce the large pressure generated by the exhaust gas, but it increases the power consumption, cannot utilize the kinetic energy of the exhaust gas, is not conducive to achieving the purpose of saving energy, and is not convenient for discharging the materials inside the storage tank. Summary of the Utility Model

[0007] The purpose of the present utility model is to provide a tail gas buffer device for the safe production of food-grade dry ice, which solves the problems of poor buffering effect of the existing tail gas buffer device for dry ice production on tail gas and large power consumption.

[0008] To solve the above technical problems, the present utility model is realized through the following technical solutions:

[0009] The present utility model is a tail gas buffer device for the safe production of food-grade dry ice, including a gas collecting cylinder, a cylinder cover is threadedly connected above the gas collecting cylinder, a storage tank is arranged on the side of the gas collecting cylinder, a buffer assembly is arranged in the middle below the cylinder cover, the buffer assembly includes a U-shaped air pipe arranged below the cylinder cover, a movable plate arranged below the U-shaped air pipe is movably connected with the inner side wall of the gas collecting cylinder, through holes are arranged in a circular array above the movable plate, a second connecting rod is fixedly connected to the middle below a second piston abutted against the lower end of one side inside the U-shaped air pipe, the lower end of the second connecting rod is connected to one side above the movable plate, a first connecting rod is fixedly connected to the middle below a first piston abutted against the upper part of the other side inside the U-shaped air pipe, and a circular seat fixedly connected to the lower end of the first connecting rod is located on the other side above the movable plate; a feeding guide assembly is arranged on the inner bottom side wall of the storage tank, and the feeding guide assembly includes a spiral rod rotatably connected to the inner bottom side wall of the storage tank, and fan blades are annularly and arrayedly connected to the upper part of the outer side wall of the spiral rod.

[0010] Further, a first valve is connected to the intake pipe communicated with the lower part of the outer side wall of the gas collecting cylinder.

[0011] Further, a filter plate connected to the inner side wall of the gas collecting cylinder is located above the intake pipe and below the movable plate.

[0012] Further, connecting shafts are symmetrically connected to the left and right below the cylinder cover, and the left and right ends of the upper part of a connecting plate fixedly connected to the upper part of the U-shaped air pipe are connected to the lower ends of the connecting shafts.

[0013] Further, a second spring arranged on one side below the U-shaped air pipe is sleeved outside the second connecting rod, the upper end of the second spring is connected to one side below the U-shaped air pipe, and the lower end of the second spring is connected to one side above the movable plate.

[0014] Further, a first spring arranged on the other side below the U-shaped air pipe is sleeved outside the first connecting rod, the upper end of the first spring is connected to the other side below the U-shaped air pipe, and the lower end of the first spring is connected to the anti-slip seat on the circular seat.

[0015] Further, pump seats are symmetrically connected to the left and right below a pump arranged above the cylinder cover, the pump seats are connected below to the upper part of the cylinder cover, a second connecting pipe communicated with the lower part of the pump is communicated with the cylinder cover, a first connecting pipe communicated with the upper end of the pump is communicated with the upper part of the outer side wall of the storage tank, and the position of the outlet end of the first connecting pipe corresponds to the position of the fan blades.

[0016] Further, a tank cover is threadedly connected above the storage tank. Bearings are press-fitted in the middle below the tank cover and in the middle of the inner bottom side wall of the storage tank. The two bearings are rotatably connected to both ends of the screw rod. A second valve is connected to the discharge pipe communicating with the lower part of the outer side wall of the storage tank.

[0017] The utility model has the following beneficial effects:

[0018] By setting the buffer assembly in the utility model, the buffering effect on the upward moving tail gas inside the air collecting cylinder is improved, the adverse effects caused by the tail gas on the buffer assembly are effectively reduced, the protection effect on the buffer assembly is improved, and the service life of the buffer assembly is prolonged.

[0019] By setting the material guiding assembly in the utility model, it is convenient to drive the screw rod to rotate by using the movement energy of the tail gas, the loss of energy is saved, the power consumption is reduced, the purpose of energy conservation is realized, and the impact force caused by the tail gas on the storage tank is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below.

[0021] Figure 1 FIG. 1 is a three-dimensional schematic diagram of a tail gas buffering device for the safe production of food-grade dry ice;

[0022] Figure 2 FIG. 2 is a connection schematic diagram of the cylinder cover and the pump;

[0023] Figure 3 FIG. 3 is a connection schematic diagram of the first connecting pipe, the tank cover, the storage tank and the material guiding assembly;

[0024] Figure 4 FIG. 4 is a sectional connection schematic diagram of the air collecting cylinder, the cylinder cover and the buffer assembly.

[0025] In the drawings, the list of components represented by each reference numeral is as follows:

[0026] 1. Air collecting cylinder; 11. Intake pipe; 111. First valve; 12. Filter plate; 2. Cylinder cover; 3. Pump; 31. Pump base; 32. First connecting pipe; 33. Second connecting pipe; 4. Storage tank; 41. Discharge pipe; 411. Second valve; 5. Tank cover; 51. Bearing; 6. Material guiding assembly; 61. Screw rod; 611. Fan blade; 7. Buffer assembly; 71. Movable plate; 711. Through hole; 72. U-shaped air pipe; 721. Connecting plate; 722. Connecting shaft; 73. First connecting rod; 731. First piston; 732. First spring; 733. Circular seat; 74. Second connecting rod; 741. Second piston; 742. Second spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0028] Please refer to Figure 1 、 4 As shown, the present utility model is a tail gas buffer device for the safe production of food-grade dry ice, including a gas collecting cylinder 1. A cylinder cover 2 is threadedly connected above the gas collecting cylinder 1. A storage tank 4 is arranged on the side of the gas collecting cylinder 1. A buffer assembly 7 is arranged in the middle below the cylinder cover 2. The buffer assembly 7 includes a U-shaped air pipe 72 arranged below the cylinder cover 2. A movable plate 71 arranged below the U-shaped air pipe 72 is movably connected to the inner side wall of the gas collecting cylinder 1. A plurality of through holes 711 are formed in a circular array above the movable plate 71. A second piston rod 74 is fixedly connected to the middle of the lower part of one side inside the U-shaped air pipe 72. The lower end of the second piston rod 74 is connected to one side above the movable plate 71. A first piston rod 73 is fixedly connected to the middle of the lower part of the other side above the U-shaped air pipe 72. A circular seat 733 fixedly connected to the lower end of the first piston rod 73 is located on the other side above the movable plate 71, effectively improving the buffering effect on the upward movement of the tail gas inside the gas collecting cylinder 1, effectively reducing the impact force caused by the upward moving tail gas inside the gas collecting cylinder 1 on the movable plate 71, avoiding excessive impact force on the buffer assembly 7 caused by the tail gas, playing a good protective effect on the buffer assembly 7, and being beneficial to improving the service life of the buffer assembly 7;

[0029] A first valve 111 is connected to an air inlet pipe 11 communicating with the lower part of the outer side wall of the gas collecting cylinder 1, facilitating the entry of the tail gas generated during the safe production of food-grade dry ice into the gas collecting cylinder 1 by opening the first valve 111; conversely, blocking the entry of the tail gas into the gas collecting cylinder 1. A filter plate 12 connected to the inner side wall of the gas collecting cylinder 1 is located above the air inlet pipe 11 and below the movable plate 71, and the filter plate 12 filters the tail gas entering the gas collecting cylinder 1;

[0030] Connecting shafts 722 are symmetrically connected to the left and right below the cylinder cover 2. The left and right ends of the upper part of a connecting plate 721 fixedly connected to the U-shaped air pipe 72 are connected to the lower ends of the connecting shafts 722, facilitating the threaded connection of the cylinder cover 2 above the gas collecting cylinder 1 to limit the position of the U-shaped air pipe 72 inside the gas collecting cylinder 1 and improving the stability of the U-shaped air pipe 72 inside the gas collecting cylinder 1;

[0031] The second spring 742 provided on one side below the U-shaped air pipe 72 is sleeved outside the second connecting rod 74. The upper end of the second spring 742 is connected to one side below the U-shaped air pipe 72, and the lower end of the second spring 742 is connected to one side above the movable plate 71. The existence of the second spring 742 further buffers the thrust exerted on the movable plate 71 when the tail gas moves upward, facilitating the upward movement of the movable plate 71 that moves upward to a certain height and then moving downward to return to its original position, facilitating the movable plate 71 to buffer the tail gas of the next batch;

[0032] The first spring 732 provided on the other side below the U-shaped air pipe 72 is sleeved outside the first connecting rod 73. The upper end of the first spring 732 is connected to the other side below the U-shaped air pipe 72, and the lower end of the first spring 732 is connected to the upper part of the circular seat 733. The existence of the first spring 732 buffers the thrust exerted on the movable plate 71 when the tail gas moves upward, facilitating the downward movement of the circular seat 733 that moves downward to a moving height and then moving upward to return to its original position, which is beneficial for the movable plate 71 to buffer the tail gas of the next batch;

[0033] When the above settings are in use, the tail gas entering the inside of the air collecting cylinder 1 moves upward, passes through the filter plate 12 for filtration. After filtration, part of the tail gas passes through the through hole 711 and moves upward, and the remaining tail gas will exert an upward thrust on the movable plate 71. The second spring 742 contracts, the second connecting rod 74 moves upward, the second piston 741 moves upward, the first spring 732 extends, the first piston 731 moves downward, the first connecting rod 73 moves downward, and the circular seat 733 moves downward, slowing down the thrust exerted by the tail gas on the movable plate 71. When the circular seat 733 contacts the movable plate 71, the movable plate 71 and the circular seat 733 exert reaction forces on each other. When the upward thrust of the movable plate 71 is less than the downward thrust, the first spring 732 and the second spring 742 gradually return to their original states, the first piston 731 moves upward, the second piston 741 moves downward, and the movable plate 71 moves downward, facilitating the movable plate 71 to buffer the tail gas of the next batch.

[0034] Among them, as Figure 1 、 3 shown, a material guiding component 6 is provided on the inner bottom side wall of the storage tank 4. The material guiding component 6 includes a screw rod 61 rotatably connected to the inner bottom side wall of the storage tank 4. The upper part of the outer side wall of the screw rod 61 is annularly and arrayedly connected with fan blades 611, which is convenient for driving the fan blades 611 to rotate by the kinetic energy of the tail gas, driving the screw rod 61 to rotate to transport the tail gas entering the inside of the storage tank 4, realizing energy saving while buffering the impact force of the tail gas on the storage tank 4, and also facilitating the discharge of the materials inside the storage tank 4 through the rotating screw rod 61;

[0035] Among them, as Figure 1 、 2As shown in the figure, pump seats 31 are symmetrically connected to the left and right below the pump 3 arranged above the cylinder cover 2. The pump seats 31 are connected below to the upper part of the cylinder cover 2. The second connecting pipe 33 communicated with the lower part of the pump 3 is communicated with the cylinder cover 2. The first connecting pipe 32 communicated with the upper end of the pump 3 is communicated with the upper part of the outer side wall of the storage tank 4. The position of the outlet end of the first connecting pipe 32 corresponds to the position of the fan blade 611, which facilitates controlling the pump 3 to introduce the tail gas inside the gas collecting cylinder 1 into the storage tank 4. The tail gas entering the storage tank 4 pushes the fan blade 611 to rotate;

[0036] As shown in Figure 3 the figure, a tank cover 5 is threadedly connected above the storage tank 4. Bearings 51 are press-fitted in the middle of the lower part of the tank cover 5 and the middle of the inner bottom side wall of the storage tank 4. The two bearings 51 are rotatably connected to both ends of the screw rod 61. The presence of the bearings 51 is beneficial to the rotation of the screw rod 61 inside the storage tank 4 and is beneficial to the rotating screw rod 61 to guide the tail gas entering the storage tank 4 to the inner bottom of the storage tank 4 one by one; A second valve 411 is connected to the discharge pipe 41 communicated with the lower part of the outer side wall of the storage tank 4, which facilitates opening the second valve 411 to discharge the materials stored inside the storage tank 4;

[0037] When the above settings are in use, after the tail gas inside the first connecting pipe 32 enters the storage tank 4, the fan blade 611 is pushed, the fan blade 611 rotates, the screw rod 61 rotates, and the rotating screw rod 61 transports the tail gas entering the storage tank 4 downward one by one, buffering the impact force caused by the downward movement of the tail gas on the storage tank 4.

[0038] The above are only the preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the foregoing embodiments, any equivalent replacement of some technical features, and any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. An exhaust gas buffer device for safe production of food-grade dry ice, comprising a gas collecting cylinder (1), a cylinder cover (2) being threadedly connected to the top of the gas collecting cylinder (1), and a storage tank (4) being arranged on the side of the gas collecting cylinder (1), characterized in that: A buffer assembly (7) is provided in the middle of the lower part of the cylinder cover (2), and the buffer assembly (7) includes a U-shaped air pipe (72) provided below the cylinder cover (2), a movable plate (71) provided below the U-shaped air pipe (72) is movably connected to the inner wall of the gas collecting cylinder (1), and through holes (711) are provided in a circular array above the movable plate (71), a second connecting rod (74) is fixedly connected to the middle of the lower part of the second piston (741) abutted by the lower end of one side of the interior of the U-shaped air pipe (72), and the lower end of the second connecting rod (74) is connected to one side of the upper part of the movable plate (71), and a first connecting rod (73) is fixedly connected to the middle of the lower part of the first piston (731) abutted by the upper part of the other side of the interior of the U-shaped air pipe (72), and a circular seat (733) fixedly connected to the lower end of the first connecting rod (73) is located on the other side of the upper part of the movable plate (71); The inner bottom side wall of the storage tank (4) is provided with a material guide assembly (6), the material guide assembly (6) comprising a screw rod (61) rotatably connected to the inner bottom side wall of the storage tank (4), and the upper part of the outer side wall of the screw rod (61) is connected to fan blades (611) in a circular array.

2. The tail gas buffer device for safe production of food-grade dry ice according to claim 1, characterized in that: A first valve (111) is connected to an air intake pipe (11) connected to the lower portion of the outer wall of the air collecting cylinder (1).

3. The tail gas buffer device for safe production of food-grade dry ice according to claim 2, characterized in that: The filter plate (12) connected to the inner wall of the gas collecting cylinder (1) is located above the air inlet pipe (11), and the filter plate (12) is located below the movable plate (71).

4. The tail gas buffer device for safe production of food-grade dry ice according to claim 1, characterized in that: A connecting shaft (722) is symmetrically connected to the bottom of the cylinder cover (2), and the upper left and right ends of the connecting plate (721) fixedly connected to the top of the U-shaped air pipe (72) are connected to the lower end of the connecting shaft (722).

5. The tail gas buffer device for safe production of food-grade dry ice according to claim 4, characterized in that: The second spring (742) provided on the lower side of the U-shaped air pipe (72) is sleeved on the outside of the second connecting rod (74), the upper end of the second spring (742) is connected to the lower side of the U-shaped air pipe (72), and the lower end of the second spring (742) is connected to the upper side of the movable plate (71).

6. The tail gas buffer device for safe production of food-grade dry ice according to claim 5, characterized in that: The first spring (732) provided on the other side below the U-shaped air pipe (72) is sleeved on the outside of the first connecting rod (73), the upper end of the first spring (732) is connected to the other side below the U-shaped air pipe (72), and the lower end of the first spring (732) is anti-connected to the circular seat (733).

7. The tail gas buffer device for safe production of food-grade dry ice according to claim 4, characterized in that: A pump seat (31) is symmetrically connected to the bottom of the pump (3) arranged above the barrel cover (2); the bottom of the pump seat (31) is connected to the top of the barrel cover (2); a second connecting pipe (33) connected to the bottom of the pump (3) is connected to the barrel cover (2); a first connecting pipe (32) connected to the upper end of the pump (3) is connected to the upper part of the outer wall of the storage tank (4); the outlet end position of the first connecting pipe (32) corresponds to the position of the fan blade (611).

8. The tail gas buffer device for safe production of food-grade dry ice according to claim 7, characterized in that: A tank cover (5) is threadedly connected to the top of the storage tank (4); a bearing (51) is interference-connected between the middle portion of the bottom of the tank cover (5) and the middle portion of the inner bottom side wall of the storage tank (4); the two bearings (51) are rotatably connected to the two ends of the spiral rod (61); and a second valve (411) is connected to the discharge pipe (41) connected to the lower portion of the outer side wall of the storage tank (4).

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