A twin screw sanitary pump
By introducing a stirring and cleaning component into the twin-screw pump, the problem of uneven mixing of disinfectant and water in the storage tank was solved, achieving uniform mixing and convenient cleaning, thus improving the disinfection effect and cleanliness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI YUANAN FLUID EQUIP TECH CO LTD
- Filing Date
- 2025-08-19
- Publication Date
- 2026-07-21
AI Technical Summary
The storage tank of the existing twin-screw pump lacks a stirring function, resulting in uneven mixing of disinfectant and water, which affects the disinfection effect.
A stirring and cleaning assembly is designed into the twin-screw pump, including a storage tank, a telescopic motor, a stirring motor, a rotating rod, and a stirring rod. The motor drives the stirring rod to stir the disinfectant and water in the storage tank, and the stirring rod is raised and lowered through a threaded rod and slider structure, which works in conjunction with the cleaning brush to clean the inner wall.
It achieves uniform mixing of disinfectant and water source, improves the disinfection effect of twin-screw pump, and the stirring rod is easy to disassemble and clean, improving cleanliness.
Smart Images

Figure CN224524532U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of twin-screw pump technology, and in particular to a twin-screw sanitary pump. Background Technology
[0002] A twin-screw pump is formed by a pair of meshing screws (driving screw and driven screw) rotating in the pump body to create a continuous sealed chamber.
[0003] As described in announcement number CN218118026U, a novel sanitary twin-screw pump includes a base; a twin-screw pump body is mounted on the top outer wall of the base, and a motor is mounted on the top outer wall of the base. One end of the motor's output shaft is connected to a connecting shaft. A linkage disinfection screw assembly is installed inside the twin-screw pump body, and linkage dust-proof blowing assemblies are installed on both outer walls of the base. The pump body and screw of this twin-screw pump are made of titanium alloy, enabling it to meet food-grade hygiene standards. Through the linkage disinfection screw assembly, the twin-screw pump operates in conjunction with the turbine. The centrifugal force generated by the turbine pumps the disinfectant solution in the tank, injecting it into the end pipe through a bent pipe and a rotating sleeve connector, and atomizing it at the spray branch pipe. This, combined with the rotation of the screw, thoroughly disinfects the inner wall of the pump body and the screw. This structure allows for disinfection during the cleaning and maintenance of the twin-screw pump.
[0004] This patent can achieve disinfection during the cleaning process of a twin-screw pump. However, the storage tank of the existing device does not have a stirring function. When both disinfectant and water are poured into the storage tank, the mixing is not uniform due to the lack of a stirring function, which affects the disinfection effect on the twin-screw pump. Utility Model Content
[0005] The purpose of this invention is to solve the problem that the storage tank of existing devices does not have a stirring function. When disinfectant and water are poured into the storage tank, the mixing is not uniform due to the lack of a stirring function, which affects the disinfection effect of the twin-screw pump.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a twin-screw sanitary pump, comprising a twin-screw pump body, a support plate connected to the front end of the twin-screw pump body, a stirring and cleaning component connected to the center of the surface of the support plate, the stirring and cleaning component including a storage box, a support frame connected to the upper end of the support plate, a telescopic motor connected to the center of the surface of the support frame, a threaded rod connected to the output end of the telescopic motor, grooves formed on both sides of the inner wall of the support plate, a fixing frame connected to the surface of the threaded rod, a threaded hole formed inside the fixing frame, a lifting platform connected to the bottom of the fixing frame, sliders connected to both sides of the lifting platform, a stirring motor connected to the center of the surface of the lifting platform, a rotating rod connected to the output end of the stirring motor, a stirring rod connected to the bottom of the rotating rod, slots formed on both sides of the stirring rod, a spring connected inside the slots, a top block connected to one side of the spring, and a cleaning brush connected to the outer surface of the top block.
[0007] Furthermore, both the telescopic motor and the stirring motor are connected to an external power supply via a control switch. The output end of the stirring motor is fixedly connected to the rotating rod, and the output end of the telescopic motor is fixedly connected to the threaded rod.
[0008] Furthermore, the threaded rod is connected to the fixed frame via a threaded hole, the outer surface of the slider is in contact with the inner wall of the groove, and a sliding connection is formed between the slider and the groove.
[0009] Furthermore, the top block has a T-shaped shape, and an elastic structure is formed between the top block and the spring.
[0010] Furthermore, the bristles of the cleaning brush are positioned to fit against the inner wall of the storage box, and the support frame is inverted U-shaped.
[0011] Furthermore, the bottom surface of the rotating rod is provided with a disassembly assembly, which includes four sets of threaded grooves, which are circumferentially formed on the bottom surface of the rotating rod.
[0012] Furthermore, a connecting frame is fixedly connected to the top of the stirring rod, and four sets of sleeves are circumferentially connected to the bottom surface of the connecting frame.
[0013] Furthermore, each set of sleeves has a hand-tightening bolt inserted inside, and a limit block is fixedly connected to the surface of the hand-tightening bolt.
[0014] Furthermore, the outer surface of the limiting block is in contact with the inner wall of the sleeve, and the hand-tightening bolt passes through the sleeve and forms a threaded connection with the threaded groove.
[0015] Furthermore, the surface of the connecting frame is in contact with the bottom of the rotating rod, and the four sets of hand-tightened bolts are matched with the four sets of threaded grooves.
[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0017] 1. In this utility model, after the disinfectant and water are poured into the storage tank, the telescopic motor can be turned on to drive the threaded rod to rotate in both directions, thereby causing the stirring rod to retract inside the storage tank. Then, the stirring motor can be turned on to drive the stirring rod to mix the disinfectant and water, thus avoiding the problem of insufficient mixing of disinfectant and water, which would affect the disinfection effect of the twin-screw pump.
[0018] 2. In this utility model, when it is necessary to clean the stirring rod, it can be disassembled by simply turning the hand-tightening bolt, which is convenient and quick, avoiding the problem that the stirring rod cannot be disassembled and cleaned after it is fixed, and improving the cleanliness of the stirring rod. Attached Figure Description
[0019] Figure 1 A three-dimensional structural diagram of a twin-screw sanitary pump is provided for this utility model;
[0020] Figure 2 This utility model presents a three-dimensional structural diagram of a twin-screw sanitary pump from another angle.
[0021] Figure 3 This utility model provides a partial explosion structure diagram of a twin-screw sanitary pump;
[0022] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle;
[0023] Figure 5 A partial cross-sectional structural diagram of a twin-screw sanitary pump is provided for this utility model;
[0024] Figure 6 This invention provides a partial exploded structural diagram of a twin-screw sanitary pump.
[0025] Legend: 1. Twin-screw pump body; 2. Support plate; 3. Mixing and cleaning assembly; 301. Storage tank; 302. Support frame; 303. Telescopic motor; 304. Threaded rod; 305. Slide groove; 306. Lifting platform; 307. Slider; 308. Fixing frame; 309. Threaded hole; 310. Mixing motor; 311. Rotating rod; 312. Mixing rod; 313. Groove; 314. Spring; 315. Top block; 316. Cleaning brush; 4. Disassembly and assembly assembly; 401. Threaded groove; 402. Connecting frame; 403. Sleeve; 404. Hand-tightening bolt; 405. Limit block. Detailed Implementation
[0026] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0028] Example 1, as Figure 1 - Figure 5 As shown, this utility model provides a twin-screw sanitary pump, including a twin-screw pump body 1. A support plate 2 is connected to the front end of the twin-screw pump body 1. A stirring and cleaning component 3 is connected to the center of the surface of the support plate 2. The stirring and cleaning component 3 includes a storage tank 301. A support frame 302 is connected to the upper end of the support plate 2. A telescopic motor 303 is connected to the center of the surface of the support frame 302. A threaded rod 304 is connected to the output end of the telescopic motor 303. Sliding grooves 305 are provided on the inner walls of both sides of the support plate 2. A fixing frame 308 is connected to the surface of the threaded rod 304. A threaded hole 309 is provided inside the fixing frame 308. A lifting platform 306 is connected to the bottom of the fixing frame 308. Slider blocks 307 are connected to both sides of the lifting platform 306. A stirring motor 310 is connected to the center of the surface of the lifting platform 306. A rotating rod 311 is connected to the output end of the stirring motor 310. A stirring rod 311 is connected to the bottom of the rotating rod 311. The rod 312 has slots 313 on both sides, and a spring 314 is connected inside the slot 313. A top block 315 is connected to one side of the spring 314, and a cleaning brush 316 is connected to the outer surface of the top block 315. The telescopic motor 303 and the stirring motor 310 are both connected to the external power cord through a control switch. The output end of the stirring motor 310 is fixedly connected to the rotating rod 311, and the output end of the telescopic motor 303 is fixedly connected to the threaded rod 304. The threaded rod 304 is threadedly connected to the fixed frame 308 through the threaded hole 309. The outer surface of the slider 307 is in contact with the inner wall of the slide groove 305, and the slider 307 and the slide groove 305 are slidably connected. The top block 315 is T-shaped and forms an elastic structure with the spring 314. The brush of the cleaning brush 316 is in contact with the inner wall of the storage box 301. The support frame 302 is U-shaped.
[0029] The effect achieved in Embodiment 1 is as follows: after both disinfectant and water are poured into the storage tank 301, the stirring motor 310 can be turned on, allowing the stirring motor 310 to drive the stirring rod 312 to stir within the storage tank 301 via the rotating rod 311, thus mixing the disinfectant and water. Then, the telescopic motor 303 is turned on. Upon activation, the telescopic motor 303 will first activate its reverse function, causing the output end of the telescopic motor 303 to drive the threaded rod 304 to reverse. When the threaded rod 304 reverses, it will rotate in the opposite direction through the threaded hole 309 and the fixed frame 308. This reverse rotation will then drive the fixed frame 308 downwards, allowing the fixed frame 308 to push the lifting platform 306 downwards, thereby moving the slider 307. Sliding within the chute 305, the stirring rod 312 descends to the bottom of the storage tank 301 for stirring. Then, the telescopic motor 303 automatically activates its forward rotation function, causing the threaded rod 304 to rotate forward. This allows the threaded rod 304 to move the lifting platform 306 upwards via the forward thread rotation, thereby causing the stirring rod 312 to mix the disinfectant and water in the upper part of the storage tank 301. While the stirring rod 312 is stirring, the spring 314 also pushes the top block 315 with its elasticity, causing the cleaning brush 316 to adhere tightly to the inner wall of the storage tank 301, thus cleaning the inner wall and improving its cleanliness. This prevents uneven mixing of the disinfectant and water, which could affect the disinfection effect of the twin-screw pump.
[0030] Example 2, as Figure 1 and Figure 6 As shown, the bottom surface of the rotating rod 311 is provided with a disassembly assembly 4, which includes four sets of threaded grooves 401. The four sets of threaded grooves 401 are circumferentially formed on the bottom surface of the rotating rod 311. The top of the stirring rod 312 is fixedly connected to a connecting frame 402. The bottom surface of the connecting frame 402 is circumferentially connected to four sets of sleeves 403. Each set of sleeves 403 has a hand-tightening bolt 404 inserted inside. The surface of the hand-tightening bolt 404 is fixedly connected to a limiting block 405. The outer surface of the limiting block 405 is in contact with the inner wall of the sleeve 403. The hand-tightening bolt 404 passes through the sleeve 403 and forms a threaded connection with the threaded groove 401. The surface of the connecting frame 402 is in contact with the bottom of the rotating rod 311. The four sets of hand-tightening bolts 404 and the four sets of threaded grooves 401 are all matched.
[0031] The effect achieved in Embodiment 2 is that when it is necessary to clean the stirring rod 312 or replace the cleaning brush 316, first turn off the power to the telescopic motor 303 and the stirring motor 310. Then, remove the screws on one side of the top cover of the storage box 301 and open the top cover. Next, reverse the hand-tightening bolt 404 with your fingers so that the front end of the hand-tightening bolt 404 can be removed from the threaded groove 401 at the bottom of the rotating rod 311. After removing the front ends of all four sets of hand-tightening bolts 404 from the threaded groove 401, tilt the stirring rod 312 outward and pull it upward to stir. The stirring rod 312, along with the cleaning brush 316, can be removed from the storage box 301. The cleaning brush 316 is fixed to the top block 315 with screws, which allows for the replacement of the cleaning brush 316. At the same time, the surface of the stirring rod 312 can be cleaned. After cleaning, the stirring rod 312 is pushed into the bottom end of the rotating rod 311, and the hand-tightening bolt 404 is turned clockwise so that the hand-tightening bolt 404 can enter the thread groove 401, thereby fixing the stirring rod 312. This avoids the problem of the stirring rod 312 being unable to be disassembled and cleaned after it is fixed, and improves the cleanliness of the stirring rod 312.
[0032] Working principle: After the disinfectant and water are poured into the storage tank 301, the telescopic motor 303 can be turned on to drive the threaded rod 304 to rotate in both directions, thereby causing the stirring rod 312 to retract within the storage tank 301. Then, the stirring motor 310 is turned on to drive the stirring rod 312 to mix the disinfectant and water. This avoids the problem of uneven mixing of disinfectant and water affecting the disinfection effect of the twin-screw pump. When it is necessary to clean the stirring rod 312, it can be disassembled by simply turning the hand-tightening bolt 404, which is convenient and quick. This avoids the problem of the stirring rod 312 being unable to be disassembled and cleaned after it is fixed, thus improving the cleanliness of the stirring rod 312.
[0033] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.
Claims
1. A twin-screw sanitary pump, comprising a twin-screw pump body (1), characterized in that: The front end of the twin-screw pump body (1) is connected to a support plate (2), and a stirring and cleaning component (3) is connected to the center of the surface of the support plate (2); The stirring and cleaning assembly (3) includes a storage tank (301), a support frame (302) is connected to the upper end of the support plate (2), a telescopic motor (303) is connected to the center of the surface of the support frame (302), a threaded rod (304) is connected to the output end of the telescopic motor (303), a sliding groove (305) is provided on the inner walls of both sides of the support plate (2), a fixing frame (308) is connected to the surface of the threaded rod (304), a threaded hole (309) is provided inside the fixing frame (308), and a lifting platform (306) is connected to the bottom of the fixing frame (308). The lifting platform (306) has sliders (307) connected to both sides. A stirring motor (310) is connected to the center of the surface of the lifting platform (306). A rotating rod (311) is connected to the output end of the stirring motor (310). A stirring rod (312) is connected to the bottom of the rotating rod (311). A slot (313) is opened on both sides of the stirring rod (312). A spring (314) is connected inside the slot (313). A top block (315) is connected to one side of the spring (314). A cleaning brush (316) is connected to the outer surface of the top block (315).
2. The twin-screw sanitary pump according to claim 1, characterized in that: Both the telescopic motor (303) and the stirring motor (310) are connected to an external power supply via a control switch. The output end of the stirring motor (310) is fixedly connected to the rotating rod (311), and the output end of the telescopic motor (303) is fixedly connected to the threaded rod (304).
3. A twin-screw sanitary pump according to claim 2, characterized in that: The threaded rod (304) is threadedly connected to the fixed frame (308) through the threaded hole (309), the outer surface of the slider (307) is in contact with the inner wall of the slide groove (305), and the slider (307) and the slide groove (305) are in sliding connection.
4. A twin-screw sanitary pump according to claim 3, characterized in that: The top block (315) is T-shaped, and the top block (315) and the spring (314) form an elastic structure.
5. A twin-screw sanitary pump according to claim 4, characterized in that: The cleaning brush (316) is positioned to fit against the inner wall of the storage box (301), and the support frame (302) is U-shaped.
6. A twin-screw sanitary pump according to claim 1, characterized in that: The bottom surface of the rotating rod (311) is provided with a disassembly assembly (4), which includes four sets of threaded grooves (401) that are circumferentially formed on the bottom surface of the rotating rod (311).
7. A twin-screw sanitary pump according to claim 6, characterized in that: The top of the stirring rod (312) is fixedly connected to a connecting frame (402), and the bottom surface of the connecting frame (402) is circumferentially connected to four sets of sleeves (403).
8. A twin-screw sanitary pump according to claim 7, characterized in that: Each sleeve (403) is fitted with a hand-tightening bolt (404), and a limit block (405) is fixedly connected to the surface of the hand-tightening bolt (404).
9. A twin-screw sanitary pump according to claim 8, characterized in that: The outer surface of the limiting block (405) is in contact with the inner wall of the sleeve (403), and the hand-tightening bolt (404) passes through the sleeve (403) and forms a threaded connection with the threaded groove (401).
10. A twin-screw sanitary pump according to claim 9, characterized in that: The surface of the connecting frame (402) is in contact with the bottom of the rotating rod (311), and the four sets of hand-tightening bolts (404) are matched with the four sets of threaded grooves (401).