Anti-blocking spiral slag extruding machine
By designing the transmission structure and scraper frame, the problem of easy clogging of the screen in the screw slag extruder was solved, achieving stable operation and efficient solid-liquid separation of the screw slag extruder and ensuring the normal separation of the extract from the residue of traditional Chinese medicine.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-03-31
AI Technical Summary
During the operation of existing spiral slag extruders, the screen mesh is easily clogged by fine debris, which prevents the liquid from being discharged normally and affects the solid-liquid separation efficiency.
A clogging-resistant spiral slag extruder was designed. Through the combined use of the transmission structure and scraper frame, it is ensured that the residue will not remain on the top surface of the screen during the rotation of the screen belt. The screen belt is driven to rotate by the transmission shaft and the auxiliary shaft rod. Solid-liquid separation is achieved in conjunction with the drain pipe of the bottom box. The material on the inner wall of the trapezoidal frame is cleaned by the scraper frame to avoid clogging.
Stable operation of the screw extruder was achieved, screen clogging was avoided, solid-liquid separation was ensured, and the stability and separation efficiency of the material feeding process were improved.
Smart Images

Figure CN224060539U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of spiral slag extruder technology, specifically an anti-clogging spiral slag extruder. Background Technology
[0002] A screw press is a device used for solid-liquid separation, typically for processing solid waste and liquid mixtures in industrial production processes. For example, after extraction of traditional Chinese medicine raw materials, the residue, after filtration, often still contains a large amount of extract liquid, resulting in low material utilization. A screw press can be used to separate the solid and liquid components of this residue. The main components of a screw press include a feed inlet, a screw shaft, a screen, and a discharge outlet. Its working principle is to separate solid particles from the liquid in the mixture by the screw's propulsion, thereby achieving solid waste treatment and liquid recycling. Specifically, the mixture is fed into the screw press through the feed inlet. The rotation of the screw shaft propels the mixture forward, gradually squeezing and compacting the solid particles onto the screen around the screw shaft, while the liquid is discharged through the screen, achieving solid-liquid separation. As the screw shaft continues to rotate, the solid waste gradually forms dry, lumpy material, which is discharged through the discharge outlet, while the clean liquid is collected for further reuse or treatment.
[0003] When the above-mentioned screw extruder is in use, after the material enters the screw shaft through the feed port, the material will be gradually squeezed out as the screw feeds. Some fine fragments will seep onto the screen along with the squeezed liquid during the screw feeding process, which will cause the screen pores to become blocked, preventing the separated liquid from being discharged normally and affecting the normal use of the extruder. Utility Model Content
[0004] Purpose of the utility model: In order to solve the problems existing in the prior art, the purpose of this utility model is to provide a clogging-resistant spiral slag extruder. This spiral slag extruder is not easy to clog, is convenient and efficient to use, and can be used for the separation of extracts from Chinese herbal medicine residues.
[0005] Technical solution: To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A clog-resistant spiral crusher includes a main body. A liquid storage box is connected to one side of the bottom end of the main body, and a feed rack is provided on one side of the top end. The main body has a cylindrical pressing chamber inside, and a horizontally arranged spiral shaft is installed inside the pressing chamber. A main gear is connected to the outer wall of one end of the spiral shaft, and a drive motor is connected to the end of the main gear. A secondary gear meshes with the bottom end of the main gear, and a secondary shaft is connected to the axis of the secondary gear. The liquid storage box includes a bottom box, a drain pipe is connected to the bottom end of the bottom box, and the top end is connected to the bottom end of the main body. A screen belt is installed inside the bottom of the pressing chamber and completely covers the opening. The surface of the screen belt is in close contact with the bottom opening of the pressing chamber. The screen belt is connected to the secondary shaft, and the rotation of the secondary shaft can drive the screen belt to rotate in a direction perpendicular to the secondary shaft.
[0007] The drive shaft forms a transmission structure with the main gear through a secondary shaft and a secondary gear. The drive motor rotates the helical shaft, which in turn rotates the main gear.
[0008] As a specific implementation plan, the main body includes an outer frame, a support, and a slag discharge pipe. The bottom two ends of the outer frame are connected to the support, one end of the outer frame is connected to the slag discharge pipe, and the top of the other end is connected to the feeding rack. The pressing chamber is opened around the inner wall of the outer frame.
[0009] As a specific implementation, the liquid storage box also includes a drive shaft and a driven shaft arranged in parallel. The screen belt is sleeved on the outer wall of the drive shaft and the driven shaft. The drive shaft is connected to a secondary shaft rod, which can drive the drive shaft to rotate.
[0010] As a specific implementation scheme, the feeding rack includes a trapezoidal frame, a slot, a scraper frame, and a handle. The bottom end of the trapezoidal frame is connected to the main body, and a slot is provided at the bottom end, which is connected to the feeding port of the main body. The inner wall of the trapezoidal frame is fitted with a scraper frame, and handles are connected to both ends of the scraper frame.
[0011] As a further embodiment, the outer walls at both ends of the scraper frame are fixedly connected to the handle, and the scraper frame is trapezoidally inclined and fits against the inner and outer walls of the trapezoidal frame.
[0012] In a specific implementation, the drive motor is located outside the main body and inside a motor protective housing; the main gear and the auxiliary gear are located between the main body and the drive motor.
[0013] In a specific implementation, the main gear and the auxiliary gear are both housed in the gear protective housing.
[0014] Beneficial effects: Compared with the prior art, the present invention has the following advantages:
[0015] When the spiral shaft of this utility model spiral extruder is driven by the drive motor, it will synchronously drive the meshing auxiliary gear through the main gear. The auxiliary shaft connected to the auxiliary gear will keep the screen belt that is in contact with the outer wall of the transmission shaft in transmission while performing screening. The residue will not stay on the top surface of the screen belt, but will be continuously scraped and left on the inner wall of the pressing chamber as the transmission continues, thereby avoiding partial blockage of the screen belt. It works in conjunction with the drain pipe of the bottom box to achieve normal solid-liquid separation.
[0016] The outer frame of the screw press is connected by brackets welded to both sides at the bottom, which can keep the overall device stable. The pressing chamber inside the outer frame is connected to the slag discharge pipe, which can keep the material discharged stably after pressing.
[0017] When feeding materials into this spiral slag extruder, such as Chinese medicine residues containing extract, some of the material will stick to the inner wall of the trapezoidal frame because the material is in a moist state. The user can use the scraper frame to slide along the trapezoidal frame to scrape it off, quickly cleaning the trapezoidal frame and maintaining the stability of the material feeding process. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the spiral slag extruder of this utility model;
[0019] Figure 2 This is a side view of the internal structure of the spiral slag extruder of this utility model;
[0020] Figure 3 This is a front view schematic diagram of the internal structure of the spiral slag extruder of this utility model;
[0021] Figure 4 This is a three-dimensional structural diagram of the feed rack in the spiral slag extruder of this utility model.
[0022] In the diagram: 1. Main body; 101. Outer frame; 102. Support; 103. Slag discharge pipe; 2. Liquid storage box; 201. Bottom box; 202. Drain pipe; 203. Screen belt; 204. Drive shaft; 205. Driven shaft; 3. Feed rack; 301. Trapezoidal frame; 302. Grooved section; 303. Scraper rack; 304. Handle; 4. Pressing chamber; 401. Spiral shaft; 402. Main gear; 403. Secondary gear; 404. Secondary shaft; 5. Drive motor; 6. Motor protective shell; 7. Gear protective shell. Detailed Implementation
[0023] The present invention will be further described below with reference to the accompanying drawings.
[0024] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.
[0025] A clog-resistant screw press, such as Figure 1-4 As shown, it includes a main body 1, a liquid storage box 2 connected to one side of the bottom end of the main body 1, a feeding rack 3 set on one side of the top end, and a cylindrical pressing chamber 4 inside.
[0026] like Figure 2 and Figure 3 As shown, a horizontally arranged spiral shaft 401 is installed inside the pressing chamber 4. A main gear 402 is connected to the outer wall of one end of the spiral shaft 401, and a drive motor 5 is connected to the end of this end. A secondary gear 403 meshes with the bottom end of the main gear 402, and a secondary shaft 404 is connected to the shaft of the secondary gear 403. The liquid storage box 2 includes a bottom box 201, a drain pipe 202 is connected to the bottom end of the bottom box 201, and the top end is connected to the bottom end of the main body 1. A screen belt 203 is installed inside the bottom of the pressing chamber 4. The screen belt 203 is fitted to the bottom opening of the pressing chamber 4 and completely covers the opening. The surface of the screen belt 203 is in contact with the bottom opening of the pressing chamber 4. The liquid storage box 2 also includes a drive shaft 204 and a driven shaft 205 arranged in parallel. The screen belt 203 is sleeved on the outer wall of the drive shaft 204 and the driven shaft 205. The drive shaft 204 is connected to the auxiliary shaft 404. The auxiliary shaft 404 can drive the drive shaft 204 to rotate. Through the rotation of the auxiliary shaft 404, the screen belt 203 can be driven to rotate in a direction perpendicular to the auxiliary shaft 404.
[0027] The aforementioned drive shaft 204 forms a transmission structure with the main gear 402 via a secondary shaft 404 and a secondary gear 403. The drive motor 5 rotates the helical shaft 401, which in turn rotates the main gear 402. The drive motor 5 is located outside the main body 1 and is housed within a motor protective housing 6. The main gear 402 and the secondary gear 403 are located between the main body 1 and the drive motor 5, and both are housed within a gear protective housing 7.
[0028] In the above design, when the spiral shaft 401 is driven by the drive motor 5, it will synchronously drive the meshing secondary gear 403 through the main gear 402. The secondary shaft rod 404 connected to the secondary gear 403 will keep the screen belt 203, which is in contact with the outer wall of the transmission shaft 204, in the process of screening and filtering. The residue will not stay on the top surface of the screen belt 203, but will be continuously scraped and left on the inner wall of the pressing chamber 4 as the transmission continues, thereby avoiding partial blockage of the screen belt 203. This, together with the drain pipe 202 of the bottom box 201, ensures normal solid-liquid separation.
[0029] like Figure 1 As shown, the main body 1 includes an outer frame 101, a support 102, and a slag discharge pipe 103. The support 102 is connected to both ends of the bottom of the outer frame 101, the slag discharge pipe 103 is connected to one end of the outer frame 101, and the feed rack 3 is connected to the top of the other end. The pressing chamber 4 is opened around the inner wall of the outer frame 101. This design can maintain the stability of the overall device.
[0030] like Figure 4 As shown, the feed rack 3 includes a trapezoidal frame 301, a slot 302, a scraper frame 303, and a handle 304. The bottom end of the trapezoidal frame 301 is connected to the outer frame 101, and the bottom end is provided with a slot 302, which communicates with the feed inlet of the main body 1. The scraper frame 303 is attached to the inner wall of the trapezoidal frame 301, and the handles 304 are connected to both ends of the scraper frame 303. Specifically, the outer walls at both ends of the scraper frame 303 are fixedly connected to the handles 304, and the scraper frame 303 is trapezoidally inclined and attached to the inner and outer walls of the trapezoidal frame 301. When the spiral slag extruder is feeding material, since the material is in a wet state, some of it will stick to the inner wall of the trapezoidal frame 301. The user can slide the scraper frame 303 along the trapezoidal frame 301 to achieve the scraping process, quickly complete the cleaning of the trapezoidal frame 301, and thus maintain the stability of the material feeding process.
[0031] The working process and principle of the above-mentioned screw extruder are as follows:
[0032] When using this spiral extruder, taking traditional Chinese medicine residue as an example, the user first feeds the residue into the trapezoidal frame 301. At this time, the drive motor 5 is turned on, which drives the connected spiral shaft 401 and main gear 402 to rotate. After the residue enters the pressing chamber 4 through the slot 302 of the trapezoidal frame 301, it is continuously spiraled forward by the spiral shaft 401. As the spiral thrust is applied, the liquid remains at the bottom screen belt 203, while some residue remains on the surface of the screen belt 203. At this time, the main gear 402 synchronously drives the meshing secondary gear 403. The secondary shaft 404 connected to the secondary gear 403 drives the transmission shaft 204 to rotate. The transmission shaft 204, in conjunction with the screen belt 203 attached to the outer wall, maintains transmission while performing filtration. The residue on the top surface of the screen belt 203 is scraped off by the inner wall of the opening of the pressing chamber 4 as it is driven, thus completing a continuous and unblocked solid-liquid separation process and separating the extract from the traditional Chinese medicine residue.
[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A clog-resistant screw press, comprising a body (1), characterized in that: The bottom end side of the main body (1) is connected with a liquid storage box (2), the top end side is provided with a feeding rack (3), the inside is provided with a cylindrical structure of a squeezing bin (4), the inside of the squeezing bin (4) is provided with a horizontally arranged spiral shaft (401), one end of the spiral shaft (401) is connected with a main gear (402), and the end is connected with a driving motor (5), the bottom end of the main gear (402) is engaged with a secondary gear (403), and the shaft of the secondary gear (403) is connected with a secondary shaft (404); the liquid storage box (2) comprises a bottom box (201), the bottom end of the bottom box (201) is connected with a liquid discharge pipe (202), the top end is connected with the bottom end of the main body (1), the inside is provided with a screen belt (203), the screen belt (203) is located at the bottom opening of the squeezing bin (4) and completely covers the opening, the surface of the screen belt (203) is in a state of adhesion with the bottom opening of the squeezing bin (4), the screen belt (203) is connected with the secondary shaft (404), and the rotation of the secondary shaft (404) can drive the screen belt (203) to rotate in a direction perpendicular to the secondary shaft (404).
2. The anti-jamming screw press of claim 1, wherein: The main body (1) comprises an outer frame (101), a support (102) and a slag discharge pipe (103), both ends of the bottom of the outer frame (101) are connected with the support (102), one end of the outer frame (101) is connected with the slag discharge pipe (103), and the other end is connected with the feeding rack (3); the squeezing bin (4) is opened along the inner wall of the outer frame (101).
3. The anti-jamming screw press of claim 1, wherein: The liquid storage box (2) further comprises a driving shaft (204) and a driven shaft (205) arranged in parallel, the screen belt (203) is sleeved on the outer wall of the driving shaft (204) and the driven shaft (205), the driving shaft (204) is connected with the secondary shaft (404), and the secondary shaft (404) can drive the driving shaft (204) to rotate.
4. The anti-jamming screw press according to claim 1, characterized in that: The feeding rack (3) comprises a trapezoidal frame (301), a slot (302), a scraper frame (303) and a handle (304), the bottom end of the trapezoidal frame (301) is connected with the main body (1), the bottom end is provided with a slot (302), and the slot (302) is communicated with the feeding port of the main body (1); the inner wall of the trapezoidal frame (301) is attached with the scraper frame (303), and the both ends of the scraper frame (303) are connected with the handle (304).
5. A clog resistant screw press de-watering machine according to claim 4 wherein: The both end outer walls of the scraper frame (303) are fixedly connected with the handle (304), and the scraper frame (303) is in a trapezoidal inclined state and attached with the inner and outer walls of the trapezoidal frame (301).
6. The anti-jamming screw press of claim 1, wherein: The driving motor (5) is arranged outside the main body (1) and in the motor protection shell (6); the main gear (402) and the secondary gear (403) are arranged between the main body (1) and the driving motor (5).
7. The anti-jamming screw press of claim 1, wherein: The main gear (402) and the secondary gear (403) are arranged in the gear protection shell (7) at the same time.