Gas low-temperature purification equipment

Abstract

The utility model relates to the technical field of purification equipment, and provides low-temperature gas purification equipment which comprises a shell and a molecular sieve filter plate, a gas inlet pipe and a gas outlet pipe are arranged on the two sides of the shell respectively, a first purification cavity and a second purification cavity are formed in the shell, and a partition plate is arranged between the first purification cavity and the second purification cavity. A plurality of communicating pipes are arranged on the partition plate, the first purification cavity is communicated with an air inlet pipe, the second purification cavity is communicated with an air outlet pipe, a refrigerating device is arranged in the second purification cavity, a mounting frame is arranged on the periphery of the molecular sieve filter plate, a mounting plate is arranged at the top of the mounting frame, and an opening is formed in the top of the shell. Sealing grooves are formed in the two sides of the opening, the mounting plate is in sliding connection with the inner walls of the sealing grooves, and a fixing mechanism used for fixing the mounting plate is arranged at the top of the shell. According to the technical scheme, the situation that gas flows out of a gap between the opening and the molecular filter plate to cause leakage is reduced, and the purification efficiency of the gas is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to purification equipment technical field, specifically, relate to a gas low temperature purification equipment. BACKGROUND

[0002] Gas purification equipment is a device specially used for removing impurities and pollutants in gas to improve the purity of gas and meet the specific needs of industry or laboratory. It usually combines various purification technologies, such as adsorption, filtration, condensation and chemical reaction, to efficiently remove impurities, including moisture, carbon dioxide, oxygen, hydrocarbons and other trace pollutants.

[0003] The existing gas purification device for hydrogen purification includes a device shell, a first purification cavity and a second purification cavity are arranged in the interior of the device shell, a filter assembly is arranged in the interior of the first purification cavity, the filter assembly includes a mounting frame and a molecular sieve filter plate, a refrigeration device is arranged in the interior of the second purification cavity.

[0004] The above related technology filters part of the water and carbon dioxide in hydrogen through the molecular sieve filter plate, thereby improving the purity of hydrogen. Then the hydrogen is cooled by the refrigeration device, and the carbon dioxide and water in the hydrogen are changed into solids (dry ice), thereby further improving the purity of hydrogen.

[0005] However, after long-term use, the molecular sieve filter plate will be saturated, so the staff needs to replace it regularly to improve the purity of the gas. Although the above related technology sets an opening in the device shell to facilitate the staff to replace the molecular sieve filter plate, due to the lack of structure to fix the molecular sieve filter plate, the molecular sieve filter plate inside the equipment is easy to move due to air flow impact or equipment vibration. This may cause gas to flow out from the gap between the opening and the molecular filter plate, resulting in leakage, thereby reducing the gas purification efficiency. SUMMARY

[0006] The utility model discloses a gas low temperature purification equipment, which reduces the situation that gas flows out from the gap between the opening and the molecular filter plate, causing leakage, and improves the gas purification efficiency.

[0007] The utility model discloses a technical scheme as follows: a kind of gas low-temperature purification equipment, including shell, molecular sieve filter plate, the both sides of the shell are equipped with inlet pipe, outlet pipe, the inside of the shell is equipped with first purification cavity and second purification cavity, and the first purification cavity is equipped with partition between second purification cavity, the partition is equipped with several communicating pipes, the first purification cavity is communicated with inlet pipe, and the second purification cavity is communicated with outlet pipe, and the inside of second purification cavity is equipped with refrigeration device, the periphery of molecular sieve filter plate is equipped with mounting frame, the top of mounting frame is equipped with mounting plate, the top of shell is equipped with opening, the both sides of opening are equipped with sealing groove, and the mounting plate is slidably connected with the inner wall of sealing groove, the top of shell is equipped with the fixed mechanism for fixed mounting plate, and the sealing mechanism for improving the sealing between mounting plate and opening is arranged in sealing groove.

[0008] Further, the fixed mechanism includes a receiving block, a fixed block, a first elastic member, and a push plate. The receiving block is disposed on the top of the shell and fixedly connected with the top of the shell. The receiving block is internally provided with a sliding groove. The fixed block is disposed inside the sliding groove and slidably connected with the inner wall of the sliding groove. The bottom of the fixed block abuts against the top of the mounting plate. One end of the first elastic member abuts against the side surface of the sliding groove. The other end of the first elastic member abuts against the fixed block. One side of the sliding groove is provided with a connecting groove. One side of the fixed block is fixedly connected with the push plate through a connecting block. The connecting block is slidably connected with the inner wall of the connecting groove.

[0009] Further, the side of the sliding groove opposite to the fixed block is provided with a first mounting groove. The two ends of the first elastic member are respectively fixedly connected with the inside of the corresponding first mounting groove.

[0010] Further, the sealing mechanism includes a sealing plate and a plurality of second elastic members. One end of each of the second elastic members is fixedly connected with the bottom of the sealing groove. The other end of each of the second elastic members is fixedly connected with the bottom of the sealing plate. The sealing plate abuts against the bottom of the mounting plate.

[0011] Further, the top of the sealing plate is provided with a sealing gasket, and the sealing gasket is arranged between the sealing plate and the mounting plate.

[0012] Further, each of the communicating pipes is provided with a one-way valve. The gas inlet of the one-way valve faces the first purification cavity. The gas outlet of the one-way valve faces the second purification cavity.

[0013] Further, the bottom of the first purification cavity is provided with a second mounting groove. The mounting frame is slidably connected with the inner wall of the second mounting groove. The two sides of the second mounting groove are provided with first chamfered surfaces.

[0014] The working principle and beneficial effects of the utility model are as follows:

[0015] The utility model discloses a fixing mechanism can stably fix the molecular sieve filter plate in the inside of shell to prevent the displacement of molecular sieve filter plate under the condition of air flow impact or equipment vibration, ensure the stability of gas purification. Meanwhile, this design can reduce the clearance flow of gas between the opening and molecular sieve filter plate, thereby reducing the risk of leakage and improving the purification efficiency of gas. Through the sealing mechanism that sets up, can reduce the probability of gas from the opening, thereby improving the efficiency of gas purification. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model makes further detailed explanation in combination with the drawings and specific embodiment.

[0017] Figure 1 For the structure diagram of the utility model Figure 1 ;

[0018] Figure 2 For the structure diagram of the utility model Figure 2 ;

[0019] Figure 3 For the sectional view of the utility model;

[0020] Figure 4 For Figure 3 The enlarged diagram of A in the middle;

[0021] Figure 5 For the structure diagram of the utility model;

[0022] Figure 6 For Figure 5 The enlarged diagram of B in the middle.

[0023] In the drawing: 1, shell;101, inlet pipe;102, outlet pipe;103, first purification cavity;104, second purification cavity;105, partition plate;106, communication pipe;107, refrigeration device;108, check valve;109, second installation slot;2, molecular sieve filter plate;201, installation frame;202, installation plate;203, opening;204, sealing groove;3, accommodating block;301, fixed block;302, first elastic part;303, push plate;304, sliding slot;305, connecting groove;306, connecting block;307, first installation slot;308, connecting rod;4, second elastic part;401, sealing plate;402, sealing pad. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor are involved in the protection scope of the utility model.

[0025] Reference Figures 1-6 A kind of gas cryogenic purification equipment, including shell 1, molecular sieve filter plate 2, the two sides of shell 1 are equipped with inlet pipe 101, outlet pipe 102, first purification cavity 103 and second purification cavity 104 are equipped in shell 1 interior, partition 105 is equipped between first purification cavity 103 and second purification cavity 104, partition 105 is equipped with several communication pipes 106, first purification cavity 103 is communicated with inlet pipe 101, second purification cavity 104 is communicated with outlet pipe 102, refrigeration device 107 is equipped in second purification cavity 104 interior, refrigeration device 107 can reduce the temperature in second purification cavity 104 interior, so that some impurities in its gas reach its condensation point or freezing point, separate from gas, which can reduce the content of impurities, improve the purity of gas.

[0026] Molecular sieve filter plate 2 is equipped with mounting frame 201 around, mounting frame 201 top is equipped with mounting plate 202, shell 1 top is equipped with opening 203, both sides of opening 203 are equipped with sealing groove 204, mounting plate 202 and sealing groove 204 inner wall slip connection, the fixing mechanism for fixing mounting plate 202 is equipped in shell 1 top.

[0027] By setting fixing mechanism, molecular sieve filter plate 2 can be stably fixed in shell 1 interior, to prevent molecular sieve filter plate 2 from displacement under the condition of air flow impact or equipment vibration, ensure the stability of gas purification. Simultaneously, this design can reduce the gap between opening 203 and molecular sieve filter plate 2, thereby reducing the risk of leakage, improve the purification efficiency of gas.

[0028] Specifically, the fixing mechanism comprises a containing block 3, a fixing block 301, a first elastic member 302 and a push plate 303. The containing block 3 is arranged at the top of the shell 1 and fixedly connected with the top of the shell 1. The containing block 3 is internally provided with a sliding groove 304. The fixing block 301 is arranged inside the sliding groove 304 and slidably connected with the inner wall of the sliding groove 304. The bottom of the fixing block 301 abuts against the top of the mounting plate 202. One end of the first elastic member 302 abuts against the side of the sliding groove 304. The other end of the first elastic member 302 abuts against the fixing block 301. One side of the sliding groove 304 is provided with a connecting groove 305. One side of the fixing block 301 is fixedly connected with the push plate 303 through a connecting block 306. The connecting block 306 is slidably connected with the inner wall of the connecting groove 305.

[0029] When it is necessary to replace the activated carbon plate, the operator can push the push plate 303. The push plate 303 drives the connecting block 306 to slide in the connecting groove 305. At the same time, the connecting block 306 pushes the fixing block 301 to move in the direction of compressing the first elastic member 302. When the bottom of the fixing block 301 is separated from the surface of the mounting plate 202, the operator can take out the molecular sieve filter plate 2. In this way, the molecular sieve filter plate 2 can be quickly disassembled and installed without the use of tools and with convenient operation, thereby improving the work efficiency of the operator.

[0030] Secondly, the fixing mechanism can be arranged in multiple to improve the fixing effect. The push plates 303 between adjacent fixing mechanisms can be connected through connecting rods 308. In this way, the operator only needs to push one connecting rod 308 to make the fixing blocks 301 in multiple fixing mechanisms separate from the surface of the mounting plate 202, which is convenient for the operator to disassemble.

[0031] In addition, the first installation grooves 307 are arranged on the side of the sliding groove 304 opposite to the fixing block 301. The two ends of the first elastic member 302 are respectively fixedly connected with the inside of the corresponding first installation grooves 307. The arrangement of the first installation grooves 307 provides installation positions for the first elastic member 302, so that it can be embedded in the groove. This reduces the possibility of radial deformation of the first elastic member 302 in the process of being stressed, thereby improving the stability and reliability of the first elastic member 302 in long-term use.

[0032] In the embodiment, the sealing mechanism comprises a sealing plate 401 and a plurality of second elastic members 4 (the first elastic member 302 and the second elastic member 4 are both cylindrical compression springs). One end of each second elastic member 4 is fixedly connected with the bottom of the sealing groove 204. The other end of each second elastic member 4 is fixedly connected with the bottom of the sealing plate 401. The sealing plate 401 abuts against the bottom of the mounting plate 202.

[0033] In the installation of the molecular sieve filter plate 2, first push the push plate 303, push the installation frame 201 into the first purification cavity 103, and make the installation plate 202 compress the sealing plate 401, so that the horizontal height of the installation plate 202 is lower than the horizontal height of the fixed block 301. Then loosen the push plate 303, the first elastic member 302 will restore the deformation, drive the fixed block 301 to contact the top of the installation plate 202, so as to fix the installation plate 202.

[0034] At the same time, since the second elastic member 4 is always in compression, it will drive the sealing plate 401 to continuously apply force to the installation plate 202, ensuring the sealing between the installation plate 202 and the sealing plate 401, thereby improving the overall sealing of the shell 1. In addition, a sealing gasket 402 can be provided on the top of the sealing plate 401 and placed between the sealing plate 401 and the installation plate 202. The sealing gasket 402 can be made of rubber material, which has a certain compressibility and can further ensure the sealing between the sealing plate 401 and the installation plate 202.

[0035] In this embodiment, in order to facilitate the operator to install the molecular sieve filter plate 2, a second installation groove 109 is arranged at the bottom of the first purification cavity 103, the installation frame 201 is in sliding connection with the inner wall of the second installation groove 109, and the two sides of the second installation groove 109 are provided with first chamfered surfaces. The second installation groove 109 provides a fixed position for the molecular sieve filter plate 2, making the installation process more convenient, fast and accurate. By placing the molecular sieve filter plate 2 into the second installation groove 109, the molecular sieve filter plate 2 can be effectively prevented from deviating or tilting, ensuring that the molecular sieve filter plate 2 always remains in the correct working position.

[0036] In this embodiment, a one-way valve 108 is also arranged on each communication pipe 106, the gas inlet of the one-way valve 108 faces the first purification cavity 103, and the gas outlet of the one-way valve 108 faces the second purification cavity 104. The one-way valve 108 can prevent gas backflow caused by pressure fluctuation in the equipment, ensuring that the gas passes through the first purification cavity 103, the communication pipe 106 and the second purification cavity 104 in turn, so that each purification step can play the best function, and the purification capacity of the equipment is enhanced.

[0037] Working principle:

[0038] In use, gas is input into the first purification cavity 103 through the gas inlet pipe 101 and is preliminarily filtered by the molecular sieve filter plate 2. Subsequently, the gas enters the second purification cavity 104 through the connecting pipe 106, and the refrigeration device 107 lowers the temperature in the second purification cavity 104, so that some impurities in the gas reach the condensation point or freezing point and are separated from the gas. This can reduce the impurity content and improve the purity of the gas. Finally, the gas is discharged from the shell 1 through the gas outlet pipe 102 (if necessary, a one-way valve 108 can be arranged on the gas outlet pipe 102 to prevent the cold air in the second purification cavity 104 from leaking out).

[0039] When the activated carbon plate needs to be replaced, the operator can push the push plate 303, and the push plate 303 drives the connecting block 306 to slide in the connecting groove 305, and at the same time, the connecting block 306 pushes the fixed block 301 to move in the direction of compressing the first elastic member 302. When the bottom of the fixed block 301 is separated from the surface of the mounting plate 202, the operator can take out the molecular sieve filter plate 2. This way realizes the quick disassembly and installation of the molecular sieve filter plate 2, without the need for tools, and the operation is convenient, thereby improving the work efficiency of the staff.

[0040] When installing the molecular sieve filter plate 2, first push the push plate 303, push the mounting frame 201 into the first purification cavity 103, and make the mounting plate 202 compress the sealing plate 401, so that the horizontal height of the mounting plate 202 is lower than the horizontal height of the fixed block 301. Then release the push plate 303, and the first elastic member 302 restores the deformation, drives the fixed block 301 to contact the top of the mounting plate 202, thereby fixing the mounting plate 202. Since the opening 203 limits the left and right degrees of freedom of the molecular sieve filter plate 2, and the fixed block 301 limits the up and down degrees of freedom, the molecular sieve filter plate 2 can be stably fixed in the shell 1.

[0041] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A gas cryogenic purification device, comprising a shell (1), a molecular sieve filter plate (2), the shell (1) is respectively provided with an air inlet pipe (101) and an air outlet pipe (102) on both sides, a first purification cavity (103) and a second purification cavity (104) are arranged in the shell (1), a partition plate (105) is arranged between the first purification cavity (103) and the second purification cavity (104), a plurality of communication pipes (106) are arranged on the partition plate (105), the first purification cavity (103) is communicated with the air inlet pipe (101), the second purification cavity (104) is communicated with the air outlet pipe (102), and a refrigeration device (107) is arranged in the second purification cavity (104), characterized in that, The molecular sieve filter plate (2) is provided with a mounting frame (201) around, the top of mounting frame (201) is provided with mounting plate (202), the top of shell (1) is provided with opening (203), both sides of opening (203) are provided with sealing groove (204), mounting plate (202) and sealing groove (204) inner wall slip connection, the top of shell (1) is provided with the fixing mechanism for fixing mounting plate (202), sealing groove (204) is provided with sealing mechanism for improving the sealing property between mounting plate (202) and opening (203).

2. A gas cryogenic purification apparatus according to claim 1, characterized in that: The fixing mechanism comprises accommodating block (3), fixed block (301), first elastic member (302), push plate (303), the accommodating block (3) is arranged at the top of shell (1), and is fixedly connected with the top of shell (1), the inside of accommodating block (3) is provided with sliding groove (304), the fixed block (301) is arranged in sliding groove (304), and is slidably connected with the inner wall of sliding groove (304), and the bottom of fixed block (301) is in abutment with the top of mounting plate (202), one end of first elastic member (302) is in abutement with the side surface of sliding groove (304), the other end of first elastic member (302) is in abutement with fixed block (301), one side of sliding groove (304) is provided with connecting groove (305), one side of fixed block (301) is fixedly connected with push plate (303) through connecting block (306), and connecting block (306) is slidably connected with the inner wall of connecting groove (305).

3. A gas cryogenic purification apparatus according to claim 2, characterized in that: The side surface of sliding groove (304) and the side opposite to fixed block (301) are provided with first mounting groove (307), and the two ends of first elastic member (302) are fixedly connected with the inside of corresponding first mounting groove (307) respectively.

4. A gas cryogenic purification apparatus according to claim 2, characterized in that: The sealing mechanism comprises sealing plate (401) and a plurality of second elastic members (4), one end of each second elastic member (4) is fixedly connected with the bottom of sealing groove (204), the other end of each second elastic member (4) is fixedly connected with the bottom of sealing plate (401), and the bottom of sealing plate (401) is in abutment with the bottom of mounting plate (202).

5. A gas cryogenic purification apparatus according to claim 4, characterized in that: The top of sealing plate (401) is provided with sealing gasket (402), and sealing gasket (402) is arranged between sealing plate (401) and mounting plate (202).

6. A gas cryogenic purification apparatus according to claim 1, characterized in that: Each of the communication pipes (106) is provided with a one-way valve (108), and the air inlet of the one-way valve (108) faces the first purification cavity (103), and the air outlet of the one-way valve (108) faces the second purification cavity (104).

7. A gas cryogenic purification apparatus according to claim 1, characterized in that: The bottom of the first purification cavity (103) is provided with a second mounting groove (109), and the mounting frame (201) is slidably connected with the inner wall of the second mounting groove (109), and the two sides of the second mounting groove (109) are provided with first chamfered surfaces.

Images