Filtering device for water outlet of freeze dryer
By setting coarse and fine filter screens in the filter device at the drain outlet of the freeze dryer, and combining them with the design of threaded grooves, threaded rods and rubber sealing rings, the problem of poor filtration effect in the existing technology is solved, achieving effective filtration and convenient cleaning of impurities of different specifications, and preventing pipe blockage.
Patent Information
- Application Number
- CN202422896204.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-27
AI Technical Summary
The existing freeze dryer drain filter is ineffective and cannot effectively filter impurities of different sizes, leading to pipe blockage and burden on the sewage treatment system.
A coarse filter and a fine filter are installed in the filter device at the drain outlet of the freeze dryer, and are fixedly connected by a threaded groove and a threaded rod. Combined with the design of a rubber sealing ring and a fixing groove, the sealing performance and convenience of the device are improved, and it is easy to clean.
It achieves effective filtration of impurities of different specifications, prevents pipe blockage, improves the filtration effect and practicality of the device, and enhances sealing and ease of cleaning.
Smart Images

Figure CN223490539U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of freeze dryer technology, specifically to a freeze dryer drain outlet filter device. Background Technology
[0002] During the use of a freeze dryer, wastewater containing impurities is often discharged from the drain outlet. These impurities may include solid particles, sediments, etc. If they are not filtered, they can easily clog the drain pipes and may also burden the subsequent wastewater treatment system, affecting the normal operation of the entire freeze dryer system.
[0003] The existing technology CN213853337U describes a freeze dryer drain outlet filter device. This utility model provides a freeze dryer drain outlet filter device, belonging to the field of freeze dryer technology. It includes a mounting plate and a filter cover. The mounting plate is fixedly installed at the bottom of the freeze dryer housing. The mounting plate has mounting holes, and a slot is formed circumferentially around the mounting holes on its upper surface. A retaining platform is formed circumferentially on the upper end of the filter cover. The filter cover passes through the mounting holes from top to bottom and is secured in the slot by the retaining platform. The upper end of the filter cover is open, and multiple filter holes are formed circumferentially and at the bottom of the filter cover. This utility model describes a freeze dryer drain outlet filter device where the mounting plate is located at the bottom of the freeze dryer housing, and the mounting plate has mounting holes. The filter cover is inserted into the mounting hole from top to bottom and secured in the circumferential groove at the top of the mounting hole by a locking platform on the upper part of the filter cover. The filter cover is stabilized by its own weight. Liquid and impurities in the freeze dryer enter the filter cover through the mounting hole at the bottom of the freeze dryer housing, and are discharged through multiple filter holes from the open end of the filter cover, while the impurities are blocked inside the filter cover. The freeze dryer drain outlet filter device provided by this utility model does not require the use of threaded holes for fixing. Instead, it uses the locking platform of the filter cover and the groove of the mounting plate for fixing, and relies on the weight of the filter cover for fixation. This makes it easy to clean and disassemble. Cleaning is convenient, and the debris will be concentrated inside the filter cover, which can be dealt with at the same time when cleaning the filter cover. The operation is convenient.
[0004] In practical use, existing freeze dryer drain outlet filtration devices mainly filter impurities in water by having multiple filter holes on the circumference and bottom of the filter cover. However, they can only filter impurities of the same size, resulting in poor filtration effect and low practicality. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] The purpose of this invention is to provide a filter device for the drain outlet of a freeze dryer to solve the problem of poor filtration effect mentioned in the background art.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: a freeze dryer drain outlet filtration device, comprising a freeze dryer body, a freeze dryer drain outlet body fixedly disposed at the bottom of the freeze dryer body, a pipe mounting plate movably mounted at the lower end of the freeze dryer body, a first freeze dryer drain pipe fixedly mounted at the lower end of the pipe mounting plate, a filter box fixedly mounted at the lower end of the first freeze dryer drain pipe, a coarse filter screen fixedly disposed inside the filter box, a fine filter screen fixedly disposed inside the filter box, and a second freeze dryer drain pipe fixedly mounted at the lower end of the filter box.
[0009] Preferably, the pipe mounting plate has a first threaded groove fixedly provided inside, and four first threaded grooves are fixedly provided.
[0010] Preferably, the bottom of the freeze dryer body is fixedly provided with a second threaded groove, and four second threaded grooves are fixedly provided, and the first threaded groove and the second threaded groove are the same.
[0011] Preferably, a fixed threaded rod is movably installed at the lower end of the pipe mounting plate. The fixed threaded rod passes through the first threaded groove and the second threaded groove, and installs the pipe mounting plate at the lower end of the freeze dryer body. Four fixed threaded rods are fixedly provided.
[0012] Preferably, a rubber sealing ring is fixedly provided at the right end of the filter box, and a fixing groove is fixedly provided at the right end of the filter box.
[0013] Preferably, a debris cleaning door is movably installed at the right end of the filter box, and a fixing block is fixedly provided on the inner side of the debris cleaning door, the fixing block being adapted to the fixing groove.
[0014] Preferably, a convenient handle is fixedly installed on the right end of the impurity cleaning door, and a connecting groove is fixedly provided inside the pipe mounting plate, the connecting groove being connected to the drainage pipe of the first freeze dryer.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. The freeze dryer's drain outlet filtration device, by setting coarse and fine filter screens inside the filter box, can filter out larger and smaller particles in the water, thereby improving the filtration effect of the device, preventing pipe blockage, and thus improving the practicality of the device.
[0017] 2. The freeze dryer's drain outlet filter device has a rubber sealing ring and a fixing groove on the right end of the filter box, and a fixing block is provided on the inner side of the impurity cleaning door, which improves the sealing performance of the device and makes it easier for people to open the impurity cleaning door to clean the coarse and fine filter screens inside the filter box. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the filter box of this utility model;
[0020] Figure 3 This is a three-dimensional structural diagram of the fine filter screen of this utility model;
[0021] Figure 4 This is a three-dimensional structural diagram of the convenient handle of this utility model.
[0022] In the diagram: 1. Freeze dryer body; 2. Freeze dryer drain outlet body; 3. Pipe mounting plate; 4. First freeze dryer drain pipe; 5. Filter box; 6. Coarse filter screen; 7. Fine filter screen; 8. Second freeze dryer drain pipe; 9. First threaded groove; 10. Second threaded groove; 11. Fixed threaded rod; 12. Rubber sealing ring; 13. Fixed groove; 14. Impurity cleaning door; 15. Convenient handle; 16. Connecting groove. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a freeze dryer drain outlet filtration device, including a freeze dryer body 1, a freeze dryer drain outlet body 2 fixedly installed at the bottom of the freeze dryer body 1, a pipe mounting plate 3 movably installed at the lower end of the freeze dryer body 1, a first freeze dryer drain pipe 4 fixedly installed at the lower end of the pipe mounting plate 3, a filter box 5 fixedly installed at the lower end of the first freeze dryer drain pipe 4, a coarse filter screen 6 fixedly installed inside the filter box 5, a fine filter screen 7 fixedly installed inside the filter box 5, and a second freeze dryer drain pipe 8 fixedly installed at the lower end of the filter box 5.
[0025] The pipe mounting plate 3 has four fixed first threaded grooves 9 inside. The bottom of the freeze dryer body 1 has four fixed second threaded grooves 10. The first threaded grooves 9 and the second threaded grooves 10 are the same. A fixed threaded rod 11 is movably installed at the lower end of the pipe mounting plate 3. The fixed threaded rod 11 passes through the first threaded grooves 9 and the second threaded grooves 10 and installs the pipe mounting plate 3 at the lower end of the freeze dryer body 1. There are four fixed threaded rods 11. When the freeze dryer drain outlet filter device is needed, the pipe mounting plate 3 and the first freeze dryer drain pipe 4 are fixedly connected. The pipe mounting plate 3 and the bottom of the freeze dryer body 1 are fixed by the fixed threaded rods 11. The first freeze dryer drain pipe 4 and the filter box 5 are fixedly connected. Water flows through the filter box 5 and finally flows out from the second freeze dryer drain pipe 8. By setting a coarse filter screen 6 and a fine filter screen 7 inside the filter box 5, larger and smaller particles in the water can be filtered out, thereby improving the filtration effect of the device, preventing pipe blockage, and thus improving the practicality of the device.
[0026] A rubber sealing ring 12 is fixedly installed at the right end of the filter box 5, a fixing groove 13 is fixedly installed at the right end of the filter box 5, and an impurity cleaning door 14 is movably installed at the right end of the filter box 5. A fixing block is fixedly installed on the inner side of the impurity cleaning door 14, and the fixing block and the fixing groove 13 are compatible. A convenient handle 15 is fixedly installed at the right end of the impurity cleaning door 14. A connecting groove 16 is fixedly installed inside the pipe mounting plate 3, and the connecting groove 16 is connected to the drainage pipe 4 of the first freeze dryer. The rubber sealing ring 12 and the fixing groove 13 at the right end of the filter box 5, and the fixing block on the inner side of the impurity cleaning door 14, improve the sealing performance of the device and make it easier for people to open the impurity cleaning door 14 to clean the coarse filter screen 6 and fine filter screen 7 inside the filter box 5.
[0027] Working principle: When the freeze dryer drain outlet filter device is needed, the pipe mounting plate 3 and the first freeze dryer drain pipe 4 are fixedly connected. The pipe mounting plate 3 and the bottom of the freeze dryer body 1 are fixed by the fixed threaded rod 11. The first freeze dryer drain pipe 4 and the filter box 5 are fixedly connected. Water flows through the filter box 5 and finally flows out from the second freeze dryer drain pipe 8. By setting coarse filter screen 6 and fine filter screen 7 inside the filter box 5, larger and smaller particles in the water can be filtered out, thereby improving the filtration effect of the device, preventing pipe blockage, and thus improving the practicality of the device. The right end of the filter box 5 is provided with a rubber sealing ring 12 and a fixing groove 13. The inner side of the impurity cleaning door 14 is provided with a fixing block, which improves the sealing of the device and makes it easy for people to open the impurity cleaning door 14 to clean the coarse filter screen 6 and fine filter screen 7 inside the filter box 5.
[0028] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.
Claims
1. A filter device for the drain outlet of a freeze dryer, comprising a freeze dryer body (1), characterized in that: The freeze dryer body (1) is fixedly provided with a freeze dryer drain outlet body (2) at the bottom. A pipe mounting plate (3) is movably installed at the lower end of the freeze dryer body (1). A first freeze dryer drain pipe (4) is fixedly installed at the lower end of the pipe mounting plate (3). A filter box (5) is fixedly installed at the lower end of the first freeze dryer drain pipe (4). A coarse filter screen (6) is fixedly provided inside the filter box (5). A fine filter screen (7) is fixedly provided inside the filter box (5). A second freeze dryer drain pipe (8) is fixedly installed at the lower end of the filter box (5).
2. The freeze dryer drain outlet filter device according to claim 1, characterized in that: The pipe mounting plate (3) is fixedly provided with a first threaded groove (9) inside, and four first threaded grooves (9) are fixedly provided.
3. The freeze dryer drain outlet filter device according to claim 2, characterized in that: The freeze dryer body (1) has a second threaded groove (10) fixedly provided at the bottom. There are four of the second threaded grooves (10). The first threaded groove (9) and the second threaded groove (10) are the same.
4. The freeze dryer drain outlet filter device according to claim 3, characterized in that: The lower end of the pipe mounting plate (3) is movably mounted with a fixed threaded rod (11). The fixed threaded rod (11) passes through the first threaded groove (9) and the second threaded groove (10) and mounts the pipe mounting plate (3) at the lower end of the freeze dryer body (1). Four fixed threaded rods (11) are fixedly provided.
5. A filter device for the drain outlet of a freeze dryer according to claim 4, characterized in that: A rubber sealing ring (12) is fixedly provided at the right end of the filter box (5), and a fixing groove (13) is fixedly provided at the right end of the filter box (5).
6. A filter device for the drain outlet of a freeze dryer according to claim 5, characterized in that: The filter box (5) is movably installed with an impurity cleaning door (14) on the right end. The impurity cleaning door (14) is fixedly provided with a fixing block on the inner side. The fixing block and the fixing groove (13) are compatible.
7. A filter device for the drain outlet of a freeze dryer according to claim 6, characterized in that: A convenient handle (15) is fixedly installed on the right end of the impurity cleaning door (14), and a connecting groove (16) is fixedly provided inside the pipe mounting plate (3). The connecting groove (16) is connected to the first freeze dryer drainage pipe (4).
Citation Information
Patent Citations
Filtering device for water outlet of freeze dryer
CN213853337U