Ultrafiltration equipment in fructose diphosphate processing technology

By designing ultrafiltration equipment in the fructose sodium diphosphate processing process, using the drive parts and piston plates to generate high and negative pressure, the rapid filtration of fructose sodium diphosphate solution is achieved, and the filter element is automatically detected through the locking mechanism to change the resistance in time, and the filter element is replaced in time. The problem of difficult to judge the service life of the filter element in the prior art is improved, and the filtration efficiency and effect are improved.

CN119113799APending Publication Date: 2024-12-13ZHANGJIAGANG HUATIAN PHARM CO LTD
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Patent Information

Application Number
CN202411333978.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-24
Publication Date
2024-12-13

AI Technical Summary

Technical Problem

In the prior art, the service life of the filter element is difficult to judge when filtration of fructose sodium diphosphate solution, resulting in slow filtration rate and low efficiency. The filter element needs to be replaced in time to maintain the filter effect, but the method of how to judge the state of the filter element is unclear.

Method used

An ultrafiltration device is designed, including an ultrafiltration cartridge, a driving member, a piston plate, a partition, a connecting column and a locking mechanism. The telescopic rod is driven by the driving member to slide the piston plate forward and backward, generating high pressure and negative pressure, and promoting rapid solution. Filter and automatically detect the resistance changes through the locking mechanism and replace the filter element in time.

Benefits of technology

The rapid filtration of fructose sodium diphosphate solution is achieved, the filtration rate is improved, and the filter element is replaced in time through the automatic locking mechanism, which solves the problem of judging the service life of the filter element and ensures the sustainability of the filtration effect.

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Abstract

The invention discloses ultrafiltration equipment in a fructose sodium diphosphate processing technology, and relates to the field of fructose sodium diphosphate processing, the ultrafiltration equipment comprises an ultrafiltration cylinder, an ultrafiltration element is arranged in the ultrafiltration cylinder, the ultrafiltration cylinder further comprises a liquid inlet pipe communicated with an ultrafiltration cylinder cavity on the front side of the ultrafiltration element and a liquid outlet pipe communicated with an ultrafiltration cylinder cavity on the rear side of the ultrafiltration element, and the liquid inlet pipe is communicated with a liquid outlet pipe. A check valve is arranged on the liquid inlet pipe; the telescopic rod is driven by the driving piece to drive the piston plate to slide back and forth, then high pressure and negative pressure are generated in the ultrafiltration cylinder cavity on the front side, the high pressure promotes an original solution to quickly pass through the ultrafiltration element, and the speed is increased. And the negative pressure sucks in a new original solution to be filtered through a liquid inlet pipe communicated with the cavity. A connecting rod and a connecting cylinder are arranged at the bottom of a connecting column, and along with continuous use of the ultrafiltration element, the resistance passing through a solution is larger and larger until the connecting rod triggers a lock catch mechanism, and the opportunity for replacing the filter element is determined.
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Description

Technical Field

[0001] The invention relates to the field of sodium fructose diphosphate processing, and in particular to ultrafiltration equipment in the sodium fructose diphosphate processing technology. Background Art

[0002] The production of sterile sodium fructose diphosphate powder is generally obtained by dissolving, sterilizing and filtering, crystallizing, solid-liquid separation, drying, sieving and weighing, and finally packaging the sterilized sodium fructose diphosphate powder. In the prior art, ordinary activated carbon filters or more advanced ultrafiltration membranes / filter elements are generally used for sterilizing and filtering. Among them, the activated carbon filter can only remove relatively large particles of impurities in the solution, and the filtering effect is not good. Although the filtering effect of the ultrafiltration element is very good, the rate at which the solution passes through the filter element is very slow and the efficiency is poor.

[0003] As the filter element is used continuously, more and more impurities will be filtered out. This will not only reduce the filtering effect of the filter element, but also make the solution flow more difficult. Therefore, it is necessary to replace the filter element in time to ensure the filtering effect. However, it is difficult to determine the status of the filter element and determine the time to replace the filter element. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide an ultrafiltration device in the processing technology of sodium fructose diphosphate to solve the technical problems of slow filtering rate of sodium fructose diphosphate solution through filter element and how to replace the filter element in time in the prior art.

[0005] Based on the above purpose, the present invention provides an ultrafiltration device in the processing technology of sodium fructose diphosphate, including an ultrafiltration cartridge, wherein an ultrafiltration element is provided in the ultrafiltration cartridge for filtering a sodium fructose diphosphate raw material solution, and the ultrafiltration device also includes:

[0006] A liquid inlet pipe communicated with the ultrafiltration cartridge chamber on the front side of the ultrafiltration cartridge and a liquid outlet pipe communicated with the ultrafiltration cartridge chamber on the rear side of the ultrafiltration cartridge, wherein a check valve is provided on the liquid inlet pipe;

[0007] A piston plate slidably connected to the ultrafiltration cartridge chamber at the front side of the liquid inlet pipe, wherein the front side of the piston plate is fixedly connected to a telescopic rod;

[0008] A driving chamber connected to the front side of the ultrafiltration cartridge via a connecting pipe is connected to the driving chamber with a driving member for driving the telescopic rod to extend forward and backward. A transmission assembly connecting the driving member and the telescopic rod is also provided in the driving chamber.

[0009] Furthermore, a ring is provided on the outer side of the ultrafiltration element, and a connecting column is provided at the center of the ultrafiltration element. A partition is also provided between the ultrafiltration element and the piston plate. The partition is fixedly connected to the ultrafiltration cylinder and a through opening is provided at the center of the partition. The inner diameter of the through opening is equal to the diameter of the connecting column, and the connecting column is slidably connected in the through opening.

[0010] Furthermore, a cover plate is detachably connected to the bottom of the ultrafiltration cartridge, and the liquid outlet pipe is fixedly connected to the cover plate.

[0011] Furthermore, the ultrafiltration element is slidably connected in the ultrafiltration cartridge, and a return spring is provided at the rear end of the ultrafiltration element, and the other end of the return spring is fixedly connected to the cover plate.

[0012] Furthermore, a connecting rod is provided at the bottom of the ultrafiltration element, a connecting cylinder is provided on the cover plate, the connecting rod is slidably connected in the connecting cylinder, and a locking mechanism is provided between the connecting rod and the connecting cylinder.

[0013] Furthermore, the locking mechanism includes a movable groove arranged in the connecting tube, in which a movable lock is slidably connected, a locking groove matching the movable lock is provided in the connecting rod, and a locking spring is also provided in the movable groove, and the two ends of the locking spring are respectively connected to the inner end of the movable lock and the bottom of the movable groove.

[0014] Furthermore, a limiting slide is slidably connected in the connecting tube, one end of the limiting slide is located outside the movable lock buckle and blocks the movable lock buckle, and the other end of the limiting slide is provided with a protrusion protruding toward the inner cavity of the connecting tube.

[0015] Furthermore, the transmission assembly includes a driving bevel gear connected to the output shaft of the driving member and a screw rod fixedly connected to the telescopic rod, a driven gear is threadedly connected to the screw rod, and the driven gear is meshed with the driving bevel gear.

[0016] Furthermore, a connecting plate is fixedly connected in the driving chamber, the driven gear is rotatably connected to the connecting plate, and the screw rod is also slidably connected to the driving chamber via a sliding groove thereon.

[0017] The advantages of the present invention are: 1. The driving member drives the telescopic rod to slide the piston plate forward and backward. The forward sliding of the piston plate will pressurize the original solution in the ultrafiltration cartridge chamber on the front side of the ultrafiltration element, promote the original solution to quickly pass through the ultrafiltration element, and increase the rate.

[0018] 2. The backward sliding of the piston plate will generate negative pressure in the ultrafiltration cartridge chamber on the front side of the ultrafiltration element, and then suck in new filtered original solution through the liquid inlet pipe connected to the chamber, and a check valve is set on the liquid inlet pipe to prevent the solution from being squeezed out when the piston plate slides forward.

[0019] 3. The ultrafiltration element is designed to be slidable, and a reset spring is provided at the rear end of the ultrafiltration element. The connecting column at the center of the ultrafiltration element can block the opening at the center of the partition. When the piston plate slides forward, the ultrafiltration element and the connecting column will be pushed to slide forward, exposing the opening to facilitate the original solution to pass through the ultrafiltration element; when the piston plate slides backward, the connecting column will re-block the opening under the action of negative pressure and the reset spring to prevent the solution from flowing back.

[0020] 4. A connecting rod and a connecting cylinder are provided at the bottom of the connecting column. With the continuous use of the ultrafiltration element, more and more impurities will be filtered out. This causes the ultrafiltration element to be blocked, so the resistance to the solution will become greater and greater. When the piston plate slides forward, the distance that the ultrafiltration element and the connecting column slide forward will increase, until the connecting rod presses the protrusion of the limit slide plate and pushes the limit slide plate to slide, so that the active lock is released. When the connecting rod slides back, the active lock will automatically snap into the lock groove under the action of the lock spring and lock the connecting rod. This makes the ultrafiltration cartridge stop working, and the ultrafiltration element can be replaced in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structural principle of the present invention.

[0023] Figure 2 It is a side view of the present invention.

[0024] Figure 3 It is a schematic structural diagram of the screw rod and telescopic rod part in the present invention.

[0025] Figure 4 Schematic diagram of the internal structure of the device of the present invention.

[0026] Figure 5 for Figure 4 Enlarged view of part A.

[0027] Marked in the figure: 101, ultrafiltration cartridge, 102, drive chamber, 103, drive member, 104, connecting pipe, 105, liquid inlet pipe, 106, check valve, 107, cover plate, 108, liquid outlet pipe, 109, active bevel gear, 110, driven gear, 111, connecting plate, 112, screw rod, 113, telescopic rod, 114, slide groove, 115, piston plate, 116, partition, 117, through port, 118, connecting column, 119, ultrafiltration element, 120, connecting rod, 121, connecting cylinder, 122, reset spring, 123, locking groove, 124, movable groove, 125, locking spring, 126, movable lock, 127, limiting slide plate.

[0028] Specific implementation method and principle

[0029] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0030] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0031] A first aspect of the present invention, as Figure 1 and Figure 2 As shown, the filtering mechanism for filtering the dissolved solution of sodium fructose diphosphate raw material (sodium fructose diphosphate with bacterial powder) in the ultrafiltration device of the present invention is the ultrafiltration cartridge 101 and the structure inside the ultrafiltration cartridge 101, mainly the ultrafiltration element 119. The original solution enters the chamber of the ultrafiltration cartridge 101 on the front side of the ultrafiltration element 119 through the liquid inlet pipe 105, enters the chamber of the ultrafiltration cartridge 101 on the rear side of the ultrafiltration element 119 after being filtered by the ultrafiltration element 119, and finally is discharged through the liquid outlet pipe 108, thereby filtering the dissolved solution of sodium fructose diphosphate raw material.

[0032] In order to allow the original solution to pass through the ultrafiltration element 119 quickly and achieve efficient filtration, a piston plate 115 is slidably connected in the chamber of the ultrafiltration cartridge 101 on the front side of the liquid inlet pipe 105, and a driving chamber 102 is provided on one side of the ultrafiltration cartridge 101, and a driving member 103 is connected to the driving chamber 102. The driving member 103 is used to drive the piston plate 115 to slide back and forth through the telescopic rod 113. The forward sliding of the piston plate 115 will pressurize the original solution in the chamber of the ultrafiltration cartridge 101 on the front side of the ultrafiltration element 119, thereby promoting the original solution to quickly pass through the ultrafiltration element 119 and increase the rate.

[0033] Specifically, Figure 4 As shown, the output shaft of the driving member 103 is fixedly connected with a driving bevel gear 109, and a screw 112 is provided in the driving chamber 102. The screw 112 is fixedly connected with the telescopic rod 113, and the screw 112 is slidably connected with the driving chamber 102, and can only slide forward and backward but cannot rotate. A driven gear 110 is threadedly connected to the screw 112, and the driven gear 110 is meshed with the driving bevel gear 109. Therefore, the forward or reverse rotation of the driving member 103 can drive the driving bevel gear 109 to rotate forward or reverse, and the driving force is transmitted to the screw 112, so that the screw 112 moves forward and backward, and then drives the piston plate 115 to slide forward and backward through the telescopic rod 113.

[0034] The driving element 103 is preferably a servo motor or a stepper motor.

[0035] Preferably, Figure 3 and Figure 4 As shown, the screw rod 112 is slidably connected to the driving chamber 102 through the slide groove 114 thereon, and a small slider is provided at the connection between the driving chamber 102 and the screw rod 112, and the small slider is fixedly connected to the driving chamber 102, and the small slider is located in the slide groove 114 and slidably connected thereto, so that the screw rod 112 and the driving chamber 102 can only slide forward and backward and cannot rotate. In addition, a connecting plate 111 is also fixedly connected in the driving chamber 102, and the driven gear 110 is rotatably connected to the connecting plate 111 to ensure the stability of the driven gear 110 when it rotates.

[0036] Preferably, a partition 116 is fixedly provided in the chamber of the ultrafiltration cartridge 101 on the front side of the ultrafiltration element 119, and a through hole 117 is provided at the center of the partition 116, and the through hole 117 is used to allow the original solution to pass through. In addition, the liquid inlet pipe 105 is between the partition 116 and the piston plate 115. Therefore, when the piston plate 115 slides backward, a negative pressure will be generated in the chamber of the ultrafiltration cartridge 101 on the front side of the ultrafiltration element 119, and then the new filtered original solution will be sucked in through the liquid inlet pipe 105 connected to the chamber, and a check valve 106 is provided on the liquid inlet pipe 105 to prevent the solution from being squeezed out when the piston plate 115 slides forward.

[0037] Another convenience, such as Figure 4 and Figure 5 As shown, a layer of collar is provided on the outer side of the ultrafiltration element 119, and a connecting column 118 is provided at the center of the ultrafiltration element 119. A partition 116 is also provided between the ultrafiltration element 119 and the piston plate 115. The partition 116 is fixedly connected to the ultrafiltration cartridge 101 and a through hole 117 is provided at the center of the partition 116. The inner diameter of the through hole 117 is equal to the diameter of the connecting column 118, and the connecting column 118 is slidably connected in the through hole 117. The bottom of the ultrafiltration cartridge 101 is detachably connected with a cover plate 107, and the liquid outlet pipe 108 is fixedly connected to the cover plate 107. In addition, the ultrafiltration element 119 is slidably connected in the ultrafiltration cartridge 101, and a reset spring 122 is provided at the rear end of the ultrafiltration element 119, and the other end of the reset spring 122 is fixedly connected to the cover plate 107.

[0038] Therefore, the connecting column 118 at the center of the ultrafiltration element 119 can block the opening 117 at the center of the partition 116. When the piston plate 115 slides forward, it will push the ultrafiltration element 119 and the connecting column 118 to slide forward, so that the opening 117 is exposed, making it convenient for the original solution to pass through the ultrafiltration element 119; and when the piston plate 115 slides backward, the connecting column 118 will re-block the opening 117 under the action of negative pressure and the return spring 122 to prevent the solution from flowing back.

[0039] In addition, a connecting rod 120 is provided at the bottom of the ultrafiltration element 119 , a connecting cylinder 121 is provided on the cover plate 107 , the connecting rod 120 is slidably connected in the connecting cylinder 121 , and a locking mechanism is provided between the connecting rod 120 and the connecting cylinder 121 .

[0040] The locking mechanism includes a movable groove 124 provided in the connecting tube 121, a movable lock 126 is slidably connected in the movable groove 124, a locking groove 123 matching the movable lock 126 is provided in the connecting rod 120, a locking spring 125 is also provided in the movable groove 124, and the two ends of the locking spring 125 are respectively connected to the inner side end of the movable lock 126 and the bottom of the movable groove 124. A limiting slide 127 is slidably connected in the connecting tube 121, one end of the limiting slide 127 is located on the outer side of the movable lock 126 and blocks the movable lock 126, and the other end of the limiting slide 127 is provided with a protrusion protruding toward the inner cavity of the connecting tube 121.

[0041] This part of the structure solves the problem of how to replace the filter element in time. With the continuous use of the ultrafiltration element 119, more and more impurities will be filtered out. As a result, the ultrafiltration element 119 is blocked, so the resistance to the solution will become greater and greater. When the piston plate 115 slides forward, the distance that the ultrafiltration element 119 and the connecting column 118 slide forward will be greater, until the connecting rod 120 presses on the protrusion of the limit slide 127, and pushes the limit slide 127 to slide, so that the movable lock 126 is released. When the connecting rod 120 slides back, the movable lock 126 will automatically snap into the lock groove 123 under the action of the lock spring 125, and lock the connecting rod 120. The ultrafiltration cartridge 101 is not working, and the staff is reminded to replace the ultrafiltration element 119 in time.

[0042] On the other hand, Figure 1 and Figure 2 As shown, the driving member 103 moves the screw rod 112 forward or backward by rotating forward or reverse, and then drives the piston plate 115 to slide forward and backward through the telescopic rod 113. Therefore, two filtering mechanisms can be symmetrically arranged on both sides of the driving chamber 102, and when the piston plate 115 in the filtering mechanism on one side slides forward, the piston plate 115 in the filtering mechanism on the other side slides backward, and the two filtering mechanisms are used crosswise in this way, so as to further improve the filtering efficiency. DETAILED DESCRIPTION

[0043] After the fructose diphosphate sodium powder is dissolved, the dissolved liquid is placed in a storage tank and connected to the ultrafiltration cartridge 101 through a liquid inlet pipe 105 .

[0044] When filtering, the driving member 103 is started, and the driving member 103 periodically rotates forward and reverse. When the driving member 103 rotates forward, the active bevel gear 109 rotates forward and drives the screw rod 112 to move forward through the driven gear 110, and drives the piston plate 115 to move forward through the telescopic rod 113.

[0045] When the piston plate 115 moves forward, it pushes the ultrafiltration element 119 and the connecting column 118 to slide forward, exposing the through-port 117, promoting the original solution to quickly pass through the ultrafiltration element 119 and increasing the rate. When the piston plate 115 slides backward, negative pressure is generated in the ultrafiltration cartridge 101 chamber on the front side of the ultrafiltration element 119, and then new filtered original solution is sucked in through the liquid inlet pipe 105 connected to the chamber, and a check valve 106 is set on the liquid inlet pipe 105 to prevent the solution from being squeezed out when the piston plate 115 slides forward. In addition, when the piston plate 115 slides backward, the connecting column 118 will re-block the through-port 117 under the action of negative pressure and the return spring 122 to prevent the solution from flowing back.

[0046] After a certain amount of impurities accumulate on the ultrafiltration element 119, when the piston plate 115 slides forward, the distance that the ultrafiltration element 119 and the connecting column 118 slide forward will reach the threshold, that is, the connecting rod 120 presses on the protrusion of the limit slide 127, and pushes the limit slide 127 to slide, so that the movable lock 126 is released. When the connecting rod 120 slides back, the movable lock 126 will automatically snap into the lock groove 123 under the action of the lock spring 125, locking the connecting rod 120. The ultrafiltration cartridge 101 is not working, and then the staff comes to remove the cover plate 107, replace the ultrafiltration element 119, and then reset the movable lock 126. The movable lock 12 is semicircular, and the left and right sides of the movable lock 126 are arc surfaces. Therefore, when disassembling, you only need to rotate the connecting rod 120 to force the movable lock 126 to return to the active groove 124.

[0047] Based on the above, the present invention drives the telescopic rod 113 to slide forward and backward with the piston plate 115 through the driving member 103, thereby generating high pressure and negative pressure in the chamber of the ultrafiltration cartridge 101 on the front side. The high pressure promotes the original solution to pass through the ultrafiltration element 119 quickly, thereby increasing the rate. The negative pressure sucks in new filtered original solution through the liquid inlet pipe 105 connected to the chamber. In addition, the ultrafiltration element 119 is set to be slidable. When the piston plate 115 slides forward, it will push the ultrafiltration element 119 and the connecting column 118 to slide forward, so that the through-port 117 is exposed, which is convenient for the original solution to pass through the ultrafiltration element 119; and when the piston plate 115 slides backward, the connecting column 118 will block the through-port 117 again under the action of the negative pressure and the reset spring 122 to prevent the solution from flowing back. A connecting rod 120 and a connecting cylinder 121 are provided at the bottom of the connecting column 118. As the ultrafiltration element 119 is continuously used, it becomes clogged, so the resistance to the solution passing through becomes greater and greater until the connecting rod 120 triggers the locking mechanism, and the ultrafiltration element 119 is replaced in time.

[0048] It should be understood by those skilled in the art that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention, including the claims, is limited to these examples; within the context of the present invention, the technical features in the above embodiments or in different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0049] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An ultrafiltration device in a sodium fructose diphosphate processing technology, comprising an ultrafiltration cartridge (101), wherein an ultrafiltration element (119) is provided in the ultrafiltration cartridge (101) for filtering a sodium fructose diphosphate raw material solution, characterized in that: The ultrafiltration device also includes: a liquid inlet pipe (105) communicating with the chamber of the ultrafiltration cartridge (101) on the front side of the ultrafiltration cartridge (119) and a liquid outlet pipe (108) communicating with the chamber of the ultrafiltration cartridge (101) on the rear side of the ultrafiltration cartridge (119), wherein a check valve (106) is provided on the liquid inlet pipe (105); A piston plate (115) slidably connected to the chamber of the ultrafiltration cartridge (101) at the front side of the liquid inlet pipe (105), wherein the front side of the piston plate (115) is fixedly connected to a telescopic rod (113); A driving chamber (102) is connected to the front side of the ultrafiltration cartridge (101) via a connecting pipe (104); a driving member (103) is connected to the driving chamber (102); the driving member (103) is used to drive a telescopic rod (113) to extend forward and backward; and a transmission assembly connecting the driving member (103) and the telescopic rod (113) is also provided in the driving chamber (102).

2. The ultrafiltration equipment in the processing technology of sodium fructose diphosphate according to claim 1, characterized in that: A collar is provided on the outer side of the ultrafiltration element (119), and a connecting column (118) is provided at the center of the ultrafiltration element (119). A partition (116) is also provided between the ultrafiltration element (119) and the piston plate (115). The partition (116) is fixedly connected to the ultrafiltration cartridge (101) and a through opening (117) is provided at the center of the partition (116). The inner diameter of the through opening (117) is equal to the diameter of the connecting column (118), and the connecting column (118) is slidably connected in the through opening (117).

3. The ultrafiltration equipment in the processing technology of sodium fructose diphosphate according to claim 1, characterized in that: The bottom of the ultrafiltration cartridge (101) is detachably connected to a cover plate (107), and the liquid outlet pipe (108) is fixedly connected to the cover plate (107).

4. The ultrafiltration equipment in the processing technology of sodium fructose diphosphate according to claim 3, characterized in that: The ultrafiltration element (119) is slidably connected in the ultrafiltration cartridge (101), and a return spring (122) is provided at the rear end of the ultrafiltration element (119), and the other end of the return spring (122) is fixedly connected to the cover plate (107).

5. The ultrafiltration equipment in the processing technology of sodium fructose diphosphate according to claim 3, characterized in that: A connecting rod (120) is provided at the bottom of the ultrafiltration element (119), a connecting cylinder (121) is provided on the cover plate (107), the connecting rod (120) is slidably connected in the connecting cylinder (121), and a locking mechanism is provided between the connecting rod (120) and the connecting cylinder (121).

6. The ultrafiltration equipment in the processing technology of sodium fructose diphosphate according to claim 5, characterized in that: The locking mechanism comprises a movable groove (124) arranged in the connecting tube (121), a movable lock (126) being slidably connected in the movable groove (124), a locking groove (123) matching with the movable lock (126) being arranged in the connecting rod (120), a locking spring (125) being further arranged in the movable groove (124), and two ends of the locking spring (125) being respectively connected to the inner side end of the movable lock (126) and the bottom of the movable groove (124).

7. The ultrafiltration equipment in the processing technology of sodium fructose diphosphate according to claim 6, characterized in that: A limiting slide plate (127) is slidably connected inside the connecting tube (121), one end of the limiting slide plate (127) is located outside the movable lock buckle (126) and blocks the movable lock buckle (126), and the other end of the limiting slide plate (127) is provided with a protruding portion protruding toward the inner cavity of the connecting tube (121).

8. The ultrafiltration equipment in the processing technology of sodium fructose diphosphate according to claim 1, characterized in that: The transmission assembly comprises a driving bevel gear (109) connected to the output shaft of the driving member (103) and a screw rod (112) fixedly connected to the telescopic rod (113); a driven gear (110) is threadedly connected to the screw rod (112); and the driven gear (110) is meshed with the driving bevel gear (109).

9. The ultrafiltration equipment in the processing technology of sodium fructose diphosphate according to claim 8, characterized in that: A connecting plate (111) is fixedly connected in the driving chamber (102), the driven gear (110) is rotatably connected to the connecting plate (111), and the screw rod (112) is slidably connected to the driving chamber (102) via a sliding groove (114) thereon.