Molecular sieve compression device and adsorption tower of oxygen production device
By designing a compression assembly containing elastic compensation parts, the problem of easy powderization of the molecular sieve of the adsorption tower is solved, automatic compression is achieved, cost is reduced, and the service life of the device is improved.
Patent Information
- Application Number
- CN202421479661.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-26
AI Technical Summary
In the existing oxygen-making device, the molecular sieve of the adsorption tower is easily powdered, resulting in a shortening of the operating life of the device and a high cost or unreliable compression method.
A compression assembly including a fixed base, a compression bolt, a compression link and an elastic compensator is designed. The elastic force of the elastic compensator is transmitted to the compression link through the elastic force of the elastic compensator, and the compression screen plate is automatically pressed to ensure the stable compression of the molecular sieve.
Automatic compression of molecular sieve is achieved, production costs are reduced, molecular sieve powdering is avoided, and the service life of the device is improved. By observing the length changes of the compression link, the compression force is conveniently adjusted to ensure uniform compression of molecular sieve.
Smart Images
Figure CN222738809U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of oxygen production devices, in particular to a structural improvement of a molecular sieve pressing device of an adsorption tower of an oxygen production device and an adsorption tower comprising the pressing device. Background Art
[0002] The adsorption tower and the molecular sieve filled inside are the core equipment of the pressure swing adsorption oxygen production device, accounting for about 30% to 40% of the investment proportion of the entire device. The molecular sieve adsorbs nitrogen in the air and oxygen passes through. After the nitrogen is saturated, it is vacuumed and analyzed. One of the two adsorption towers adsorbs and produces oxygen, while the other adsorption tower vacuums and analyzes. They operate alternately, resulting in continuous oxygen output.
[0003] When the pressure swing adsorption oxygen generator is working, the system operating pressure changes alternately from positive pressure to negative pressure. If the molecular sieve compression device of the adsorption tower is not well designed, the molecular sieve will easily pulverize, which will seriously affect the operating life of the device.
[0004] At present, in the industry, the compression methods of the pressurized material sieve plate on the molecular sieve mainly adopt the following two methods:
[0005] The first method is to add a counterweight to the pressing sieve plate. The pressing sieve plate continues to be pressed tightly on the molecular sieve by the gravity of the counterweight. The molecular sieve has no room to jump, thus avoiding the pulverization phenomenon.
[0006] The second method is to use bolts to directly press the press screen plate onto the molecular sieve.
[0007] The counterweight method is used to compress the pressing screen plate, which requires the use of steel balls weighing about 0.5-2 tons. The investment cost is high, and when checking and observing the condition of the top molecular sieve, it is necessary to enter the barrel to clean the counterweight before proceeding. Although the molecular sieve with a bolt compression structure has a low cost, it is only manually compressed and filled during the initial loading. When the system is running, the molecular sieve will inevitably create space due to sedimentation, and it is necessary to enter the barrel to check and adjust the compression. The molecular sieve will be powdered due to jumping and wear in the space, and the service life of the device is significantly reduced. Summary of the invention
[0008] The utility model provides a molecular sieve pressing device for an adsorption tower of an oxygen production device and an adsorption tower, which have low cost and reliable pressing, can understand the molecular sieve height from outside the cylinder, and can adjust the pressure, and are easy to operate.
[0009] In order to achieve the above technical purpose, the technical solution of the molecular sieve pressing device for the adsorption tower of the oxygen production device of the utility model is that the molecular sieve pressing device for the adsorption tower of the oxygen production device comprises:
[0010] Adsorption tower cylinder;
[0011] A material pressing screen plate is arranged in the cylinder of the adsorption tower, and an installation hole is arranged on the upper cover of the cylinder of the adsorption tower;
[0012] A molecular sieve, which is arranged in the cylinder of the adsorption tower and below the press sieve plate;
[0013] A clamping assembly, which is installed on the upper head through the mounting hole, includes a fixed base, a clamping bolt, a clamping connecting rod and an elastic compensating member in a compressed state; the fixed base is fixedly inserted in the mounting hole and has a vertical through threaded hole; the clamping bolt is threadedly installed in the through threaded hole, and the clamping bolt has a vertical through light hole; the clamping connecting rod is inserted in the through light hole and slidably cooperates with the through light hole, and the bottom end of the clamping connecting rod is exposed downward from the clamping bolt; the elastic compensating member is arranged between the bottom end of the clamping bolt and the bottom end of the clamping connecting rod, and its elastic force drives the bottom end of the clamping connecting rod to press down against the pressing screen plate.
[0014] There are multiple clamping assemblies, which are dispersedly arranged on the upper head, and the mounting holes are arranged in a one-to-one correspondence with the clamping assemblies.
[0015] A lower limit portion is formed on the bottom end of the clamping connecting rod, and the elastic compensation member is a spring, which is sleeved on the clamping connecting rod, and two ends of the spring respectively abut against the bottom end surface of the clamping bolt and the top end surface of the lower limit portion.
[0016] The bottom end of the pressing connecting rod is detachably connected to the material pressing screen plate as a whole.
[0017] The top end of the clamping connecting rod is exposed upward from the clamping bolt, and an upper limit portion is detachably mounted on the top end of the clamping connecting rod for limiting the clamping connecting rod from sliding downward and disengaging from the clamping bolt when the molecular sieve is not filled.
[0018] The fixed base is sealed in cooperation with the mounting hole, the top end of the clamping bolt is exposed upward from the fixed base, a sealing sleeve with a closed top end and an open bottom end is fixed above the fixed base, the sealing sleeve covers the top of the clamping bolt and the top of the clamping connecting rod, and the bottom end of the sealing sleeve is sealed in cooperation with the fixed base.
[0019] The sealing sleeve is detachably connected to the fixed base.
[0020] The utility model also provides an adsorption tower, which comprises the molecular sieve pressing device of the adsorption tower of the oxygen production device.
[0021] Compared with the prior art, the utility model has the following advantages and positive effects:
[0022] 1. The compression device of the oxygen production device adsorption tower of the utility model compresses the elastic compensating part through the compression nut, and the elastic force of the elastic compensating part is transmitted to the compression connecting rod to compress the pressing sieve plate, thereby realizing the automatic compression of the molecular sieve, and no counterweight is required for compression, which is beneficial to reducing production costs; and when the molecular sieve settles during the operation of the oxygen production device, the elastic compensating part extends downward to compensate for the space generated by the settlement, thereby preventing the molecular sieve from jumping and powdering, and the compression is reliable;
[0023] 2. After the oxygen generator has been working for a period of time, the sedimentation inside the adsorption tower can be judged by observing the change in the length of the top end of the clamping rod. Then, according to the sedimentation situation, the pressure of the elastic compensation part on the clamping rod can be adjusted by rotating and tightening the clamping bolt, thereby adjusting the pressure on the pressure screen plate.
[0024] The advantages and positive effects of the present invention will be described in more detail in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 This is a schematic cross-sectional view of a molecular sieve pressing device for an adsorption tower of an oxygen production device in an embodiment of the utility model;
[0026] Figure 2 This is a schematic diagram of the internal structure of the clamping assembly in the embodiment of the utility model;
[0027] Figure 3 It is a schematic diagram of a distribution structure of multiple pressing components on the upper end cap of the adsorption tower cylinder according to an embodiment of the utility model from one perspective;
[0028] Figure 4 It is a schematic diagram from another perspective of the distribution structure of multiple clamping components on the upper head of the adsorption tower cylinder in an embodiment of the utility model.
[0029] In the figure, 100, adsorption tower body; 110, upper head; 111, mounting hole; 200, pressing screen plate; 210, detachable cover plate; 300, molecular sieve; 400, clamping assembly; 410, fixed base; 411, through threaded hole; 420, clamping bolt; 421, through light hole; 430, clamping connecting rod; 431, lower limit part; 432, external thread; 433, rectangular protrusion; 440, elastic compensation part; 450, sealing sleeve; 451, external flange. DETAILED DESCRIPTION
[0030] The specific implementation of the utility model will be further described in detail below in conjunction with the accompanying drawings.
[0031] Reference Figure 1 and Figure 2In some embodiments of the present application, a molecular sieve pressing device for an adsorption tower of an oxygen production device includes an adsorption tower cylinder 100, a pressing sieve plate 200, a molecular sieve 300 and a pressing assembly 400.
[0032] The pressing screen plate 200 is arranged in the adsorption tower cylinder 100 , and the adsorption tower cylinder 100 at least includes an upper head 110 , an intermediate cylinder (omitted) and a lower head (omitted), and the upper head 110 is provided with a mounting hole 111 .
[0033] The molecular sieve 300 is disposed in the adsorption tower cylinder 100 and is located below the press sieve plate 200 .
[0034] The clamping assembly 400 is installed on the upper head 110 through the mounting hole 111 , and includes a fixing base 410 , a clamping bolt 420 , a clamping connecting rod 430 and an elastic compensating member 440 .
[0035] The fixed base 410 is fixedly inserted in the mounting hole 111, the upper part of the fixed base 410 is exposed above the outside of the upper head 110, and the lower part extends into the adsorption tower cylinder 100. The fixed base 410 has a vertical through threaded hole 411, that is, the through threaded hole 411 is a through internal threaded hole and has a vertical axis.
[0036] The clamping bolt 420 has an external thread that matches the through threaded hole 411, and is threadedly installed in the through threaded hole 411. Accordingly, the upper part of the clamping bolt 420 is located above the outside of the upper head 110, and the lower part extends into the adsorption tower cylinder 100. The clamping bolt 420 has a vertical through light hole 421.
[0037] The clamping link 430 is inserted into the through light hole 421 and slidably cooperates with the through light hole 421, that is, the clamping link 430 can slide along the through light hole 421 relative to the clamping bolt 420, the upper part of the clamping link 430 is located above the outside of the upper head 110, and the lower part extends into the adsorption tower cylinder 100, and the bottom end of the clamping link 430 is exposed downward from the clamping bolt 420.
[0038] The elastic compensating member 440 is disposed between the bottom end of the clamping bolt 420 and the bottom end of the clamping connecting rod 430 . The elastic compensating member 440 is in a compressed state, and its elastic force drives the bottom end of the clamping connecting rod 430 to press down against the press screen plate 200 .
[0039] In this embodiment, the compression device of the adsorption tower of the oxygen production device compresses the elastic compensating member 440 through the compression nut, and the elastic force of the elastic compensating member 440 is transmitted to the compression connecting rod 430 to compress the material pressing sieve plate 200, thereby realizing automatic compression of the molecular sieve 300, without setting a counterweight for compression, which is beneficial to reducing production costs; and when the molecular sieve 300 settles during the operation of the oxygen production device, the elastic compensating member 440 extends downward to compensate for the space generated by the settlement, thereby preventing the molecular sieve 300 from jumping and powdering, and the compression is reliable; after the oxygen production device has been working for a period of time, the sedimentation of the molecular sieve 300 inside the adsorption tower can be judged by observing the length change of the upper part of the compression connecting rod 430 (the part located outside the upper head 110), and then the pressure of the elastic compensating member 440 on the compression connecting rod 430 can be adjusted by rotating and tightening the compression bolt 420 according to the sedimentation situation, and then the pressure on the material pressing sieve plate 200 can be adjusted, so that the compression adjustment of the molecular sieve 300 is convenient and quick.
[0040] Since the cross-sectional area of the adsorption tower cylinder 100 is usually large, the pressing screen plate area is large. In order to further improve the pressing reliability, in some embodiments of the present utility model, reference is made to Figure 3 and Figure 4 There are multiple pressing assemblies 400, and the multiple pressing assemblies 400 are dispersedly arranged on the upper head 110. Accordingly, the mounting holes 111 are arranged one by one with the pressing assemblies 400. By dispersing multiple pressing assemblies 400, the pressing force on the pressing screen plate 200 can be increased, thereby ensuring that the pressing screen plate 200 is reliably pressed on the molecular sieve 300. The multiple pressing assemblies 400 disperse the pressure on the pressing screen plate 200 at multiple points, so that the pressing screen plate 200 is pressed evenly at various locations as much as possible, thereby making the pressure on the top surface of the molecular sieve 300 evenly at various locations as much as possible, avoiding the existence of sedimentation space at local locations, and effectively preventing the molecular sieve 300 from jumping and pulverizing.
[0041] like Figure 3 and Figure 4 As shown, there are four clamping assemblies 400, but the number is not limited to four and depends on specific working conditions.
[0042] In some embodiments of the present application, the elastic compensating member 440 is a spring, which is sleeved on the clamping link 430. A lower limit portion 431 is formed on the bottom end of the clamping link 430, and the top end of the spring abuts against the bottom end surface of the clamping bolt 420, and the bottom end abuts against the top end surface of the lower limit portion 431.
[0043] Specifically, Figure 2 As shown, the lower limit portion 431 is an annular boss formed on the bottom end of the clamping link 430, and the spring is restricted between the lower limit portion 431 and the bottom end surface of the clamping bolt 420, which can effectively prevent it from falling off and ensure reliable clamping effect.
[0044] Of course, the elastic compensation member 440 may also be other structural components, such as an elastic sleeve, an elastic rubber block, etc., and no specific limitation is made here.
[0045] In order to smoothly transmit the elastic force of the elastic compensating member 440 on the pressing link 430 to the press screen plate 200, in some embodiments of the present application, the bottom end of the pressing link 430 is detachably connected to the press screen plate 200 as a whole, such as by screw connection, so that as long as the elastic force of the elastic compensating member 440 can act on the pressing link 430, the pressing link 430 can provide pressure to the press screen plate 200 under the action of this elastic force. The bottom end of the pressing link 430 is detachably connected to the press screen plate 200, and it can also be conveniently disassembled for maintenance and repair.
[0046] Since the molecular sieve 300 is the last one to be filled into the adsorption tower cylinder 100, the removable cover 210 on the pressing sieve plate 200 is opened to expose the feeding port on the pressing sieve plate 200 and the material is filled to the bottom of the pressing sieve plate 200 through the feeding port. After the molecular sieve 300 is filled, the removable cover 210 is closed. Before the molecular sieve 300 is filled, it is necessary to ensure that the pressing sieve plate 200 is suspended and fixed in the adsorption tower cylinder 100, and the bottom end of the clamping connecting rod 430 is detachably connected to the pressing sieve plate 200 as a whole. Then, the clamping connecting rod 430 also needs to be suspended and fixed, and the clamping connecting rod 430 can slide up and down relative to the clamping bolt 420. In order to prevent the clamping connecting rod 430 from sliding downward and disengaging from the clamping bolt 420 under the action of its own gravity and the gravity of the pressing sieve plate 200, as Figure 1 and Figure 2 As shown, the top end of the clamping link 430 is exposed upward from the clamping bolt 420, and an upper limit portion is detachably installed on the top end of the clamping link 430 to limit the clamping link 430 from sliding downward and disengaging from the clamping bolt 420 when the molecular sieve 300 is not filled.
[0047] As an implementation method, Figure 2 As shown, the top of the clamping connecting rod 430 has an external thread 432, where a nut can be installed. The outer diameter of the nut is larger than the outer diameter of the top of the clamping bolt 420. The nut is used as an upper limit (not shown) to prevent the clamping connecting rod 430 from being separated from the clamping nut before the molecular sieve 300 is not filled. Tightening the nut can also put the elastic compensating member 440 in a pre-tightened state, so that the clamping connecting rod 430 drives the press screen plate 200 to a higher position, providing a filling space for the molecular sieve 300. After the molecular sieve 300 is filled and compacted, the nut can be removed, and the pre-tightening force of the elastic compensating member 440 drives the clamping connecting rod 430 and the press screen plate 200 to further press the molecular sieve 300.
[0048] In order to prevent the clamping connecting rod 430 from rotating with the nut when the nut is installed, causing the nut to be unable to be screwed in normally for installation, a rectangular protrusion 433 is formed on the top of the clamping connecting rod 430 above its external thread 432, as shown in FIG. Figure 2 As shown, when tightening the nut, the rectangular protrusion 433 can be clamped with a wrench to ensure that the clamping connecting rod 430 is fixed, so that the nut can be tightened smoothly.
[0049] Of course, the upper limit portion may also be other structures, such as a pin inserted into the top of the clamping link 430.
[0050] In order to prevent gas leakage in the cylinder when the adsorption tower is working, in some embodiments of the present application, the fixed base 410 is sealed with the mounting hole 111. Specifically, welding connection can be used to achieve sealing between the outer wall of the fixed base 410 and the mounting hole 111. The top of the clamping bolt 420 is exposed upward from the fixed base 410. A sealing sleeve 450 with a closed top and an open bottom is fixed above the fixed base 410. Figures 1 to 4 As shown, the sealing sleeve 450 covers the top of the clamping bolt 420 and the top of the clamping connecting rod 430 , and the bottom end of the sealing sleeve 450 is sealed and matched with the fixed base 410 .
[0051] Specifically, the bottom end of the sealing sleeve 450 has an outer flange 451, and the outer flange 451 is screw-connected to the top end of the clamping bolt 420. A sealing gasket can be sandwiched between the outer flange 451 and the top end surface of the clamping bolt 420 to achieve sealing.
[0052] Furthermore, the sealing sleeve 450 is detachably connected to the fixed base 410 to facilitate opening of the sealing sleeve 450. After the sealing sleeve 450 is opened, the internal sedimentation of the molecular sieve 300 in the cylinder can be judged by observing the length change of the exposed portion of the top of the clamping connecting rod 430, and the clamping nut can be tightened according to the sedimentation condition to adjust the pressure on the pressing sieve plate 200 and the molecular sieve 300.
[0053] In some embodiments of the present application, an adsorption tower is also proposed, including the above-mentioned oxygen production device adsorption tower molecular sieve pressing device, the oxygen production device adsorption tower molecular sieve pressing device refers to the description of the oxygen production device adsorption tower molecular sieve pressing device in some embodiments of the present application, and the attached Figures 1 to 4 , I will not go into details here.
[0054] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.
Claims
1. A molecular sieve pressing device for an adsorption tower of an oxygen production device, characterized in that: include: Adsorption tower cylinder; A material pressing screen plate, which is arranged in the adsorption tower cylinder, and an installation hole is arranged on the upper cover of the adsorption tower cylinder; A molecular sieve, which is arranged in the cylinder of the adsorption tower and below the press sieve plate; A clamping assembly, which is installed on the upper head through the mounting hole, includes a fixed base, a clamping bolt, a clamping connecting rod and an elastic compensating member in a compressed state; the fixed base is fixedly inserted in the mounting hole and has a vertical through threaded hole; the clamping bolt is threadedly installed in the through threaded hole, and the clamping bolt has a vertical through light hole; the clamping connecting rod is inserted in the through light hole and slidably cooperates with the through light hole, and the bottom end of the clamping connecting rod is exposed downward from the clamping bolt; the elastic compensating member is arranged between the bottom end of the clamping bolt and the bottom end of the clamping connecting rod, and its elastic force drives the bottom end of the clamping connecting rod to press down against the pressing screen plate.
2. The molecular sieve pressing device for the adsorption tower of the oxygen production device according to claim 1, characterized in that: There are multiple clamping assemblies, which are dispersedly arranged on the upper head, and the mounting holes are arranged in a one-to-one correspondence with the clamping assemblies.
3. The molecular sieve pressing device for the adsorption tower of the oxygen production device according to claim 1, characterized in that: A lower limit portion is formed on the bottom end of the clamping connecting rod, and the elastic compensation member is a spring, which is sleeved on the clamping connecting rod, and two ends of the spring respectively abut against the bottom end surface of the clamping bolt and the top end surface of the lower limit portion.
4. The molecular sieve pressing device for the adsorption tower of the oxygen production device according to claim 3, characterized in that: The bottom end of the pressing connecting rod is detachably connected to the material pressing screen plate as a whole.
5. The molecular sieve pressing device for the adsorption tower of the oxygen production device according to claim 4, characterized in that: The top end of the clamping connecting rod is exposed upward from the clamping bolt, and an upper limit portion is detachably mounted on the top end of the clamping connecting rod for limiting the clamping connecting rod from sliding downward and disengaging from the clamping bolt when the molecular sieve is not filled.
6. The molecular sieve pressing device for the adsorption tower of the oxygen production device according to claim 1, characterized in that: The fixed base is sealed in cooperation with the mounting hole, the top end of the clamping bolt is exposed upward from the fixed base, a sealing sleeve with a closed top end and an open bottom end is fixed above the fixed base, the sealing sleeve covers the top of the clamping bolt and the top of the clamping connecting rod, and the bottom end of the sealing sleeve is sealed in cooperation with the fixed base.
7. The molecular sieve pressing device for the adsorption tower of the oxygen production device according to claim 6, characterized in that: The sealing sleeve is detachably connected to the fixed base.
8. An adsorption tower, characterized in that: The invention comprises the molecular sieve compression device of the adsorption tower of the oxygen production device according to any one of claims 1 to 7.