Gypsum filter for dental model production

Abstract

This utility model relates to the field of dental mold production, and in particular to a gypsum filter for dental mold production. It includes a treatment cylinder and a self-cleaning mechanism located inside the treatment cylinder. The self-cleaning mechanism includes a support frame fixed to the upper side of the treatment cylinder. A rotating shaft is rotatably connected to the bottom of the support frame. A filter cylinder is rotatably connected to the top inner side of the treatment cylinder, and a scraper is slidably connected to the outer side of the rotating shaft. The rotating shaft drives the filter cylinder to rotate, accelerating the filtration speed of the gypsum wastewater. Simultaneously, the rotating shaft drives a slider to move upward along a spiral groove, which in turn drives the scraper to scrape upwards the gypsum particles accumulated on the inner wall of the filter cylinder. When the scraper reaches the top of the filter cylinder, it contacts and squeezes against a pressure ring. Two springs then react with the pressure ring, squeezing out the water from the gypsum particles to form a gypsum cake. The gypsum cake is removed and collected, allowing for timely cleaning of the filter cylinder without frequent disassembly and replacement.

Description

Technical Field

[0001] This utility model relates to the field of dental mold production, and in particular to a plaster filter for dental mold production. Background Technology

[0002] According to the patent document with publication number CN212417262U, the wastewater generated after cleaning the denture model is discharged into a filter bag through a drain pipe. The filter bag first filters the wastewater, intercepting particulate matter or debris in the wastewater. Then, the water that has undergone preliminary filtration is allowed to settle in a sedimentation tank for secondary filtration before being discharged. When cleaning the filter bag, the pressure ring is separated from the drain pipe wall by pulling the lever, the spring is compressed and retracted, and then the filter bag is separated from the lower end of the drain pipe for cleaning and replacement.

[0003] The patent document states that after treating a certain amount of wastewater, in order to avoid clogging of the filter bags and ensure the filtration effect, the filter bags need to be frequently replaced and cleaned. Furthermore, the particles or debris trapped inside the filter bags need to be treated separately, making the operation cumbersome. Utility Model Content

[0004] The purpose of this invention is to provide a plaster filter for dental mold production in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A plaster filter for dental mold production includes a processing cylinder and a self-cleaning filter mechanism located inside the processing cylinder.

[0007] The filter self-cleaning mechanism includes a support frame, which is fixed to the upper side of the treatment cylinder. A rotating shaft is rotatably connected to the bottom of the support frame. A filter cylinder is rotatably connected to the top inner side of the treatment cylinder. A scraper is slidably connected to the outside of the rotating shaft. A slider is fixed to the side of the scraper near the rotating shaft. Slide rods are fixed to both sides of the top of the scraper. The two slide rods pass through and are slidably connected to the support frame. A pressure ring is provided between the support frame and the filter cylinder. Springs are fixed between the top two sides of the pressure ring and the bottom of the support frame.

[0008] Preferably, the treatment cylinder is equipped with a water inlet pipe at the top, which is fixed to the top of the support frame. A sewage pipe is fixed at the bottom of the treatment cylinder, and a drain pipe is fixed on one side of the treatment cylinder. Valves are fixedly installed inside both the sewage pipe and the drain pipe.

[0009] Preferably, the top of the support frame has two sliding grooves that respectively cooperate with the two sliding rods.

[0010] Preferably, the rotating shaft is located inside the filter cylinder, and the bottom end of the rotating shaft is fixedly connected to the bottom inner side of the filter cylinder.

[0011] Preferably, the scraper has a trapezoidal cross-section, and the side of the scraper away from the rotating shaft is in contact with the inner wall of the filter cartridge.

[0012] Preferably, the surface of the rotating shaft is provided with a spiral groove that cooperates with the slider, and a motor is fixedly installed at the input end of the rotating shaft.

[0013] Preferably, a rotating ring is fixed on the inner side of the top of the treatment cylinder, and a rotating groove that mates with the rotating ring is opened on the outer side of the top of the filter cylinder.

[0014] The advantages compared with the existing technology are as follows: The rotating shaft drives the filter cylinder to rotate, which accelerates the filtration speed of the filter cylinder for gypsum wastewater. At the same time, the rotating shaft drives the slider to move upward along the spiral groove, which in turn drives the scraper to scrape the gypsum particles attached to the inner wall of the filter cylinder. When the scraper reaches the top of the filter cylinder, it contacts and squeezes the pressure ring. Then, two springs react on the pressure ring, which squeezes out the water in the gypsum particles to form a gypsum cake. The gypsum cake is removed and recycled, and the filter cylinder is cleaned in time without the need for frequent disassembly and replacement of the filter cylinder. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a plaster filter for dental mold production according to the present invention;

[0017] Figure 2 This is a top view of a plaster filter for dental mold production according to the present invention;

[0018] Figure 3 yes Figure 2 Sectional view at point A in the middle;

[0019] Figure 4 yes Figure 3 Enlarged view of point B in the middle;

[0020] Figure 5 This is a schematic diagram of the self-cleaning mechanism of a plaster filter for dental mold production according to the present invention;

[0021] Figure 6 This is a schematic diagram of the support frame and rotating shaft structure of a plaster filter for dental mold production according to the present invention;

[0022] Figure 7 This is a schematic diagram of the scraper and slider structure of a plaster filter for dental mold production according to the present invention.

[0023] The annotations in the attached figures are explained as follows:

[0024] 1. Treatment cylinder; 2. Inlet pipe; 3. Drain pipe; 4. Drain pipe; 5. Filter self-cleaning mechanism; 501. Support frame; 502. Rotating shaft; 503. Motor; 504. Filter cylinder; 505. Scraper frame; 506. Sliding block; 507. Sliding rod; 508. Pressure ring; 509. Spring. Detailed Implementation

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] like Figures 1-7 As shown, a plaster filter for dental mold production includes a processing cylinder 1 and a self-cleaning filter mechanism 5, which is located inside the processing cylinder 1.

[0028] In this embodiment: the filter self-cleaning mechanism 5 includes a support frame 501, which is fixed to the upper side of the processing cylinder 1. A rotating shaft 502 is rotatably connected to the bottom of the support frame 501. A filter cylinder 504 is rotatably connected to the top inner side of the processing cylinder 1. The rotating shaft 502 is located inside the filter cylinder 504, and its bottom end is fixedly connected to the bottom inner side of the filter cylinder 504. A scraper 505 is slidably connected to the outer side of the rotating shaft 502. The scraper 505 has a trapezoidal cross-section, and the side of the scraper 505 away from the rotating shaft 502 is in contact with the inner wall of the filter cylinder 504. A slider 506 is fixed to the side of the scraper 505 near the rotating shaft 502. Slide rods 507 are fixed to both sides of the top of the scraper 505. A spiral groove that cooperates with the slider 506 is opened on the surface of the rotating shaft 502. A motor 503 is fixedly installed at the input end of the rotating shaft 502. The two slide rods 507 pass through and are slidably connected to the support frame 501. A spiral groove that cooperates with the slider 506 is opened on the top of the support frame 501. Two sliding grooves are fitted by two sliding rods 507. A pressure ring 508 is provided between the support frame 501 and the filter cylinder 504. Springs 509 are fixed between the top two sides of the pressure ring 508 and the bottom of the support frame 501. The rotating shaft 502 is driven to rotate by the motor 503, which in turn drives the filter cylinder 504 to rotate. During the process of the gypsum wastewater being thrown out of the filter cylinder 504 by centrifugal motion, the particulate matter in the gypsum wastewater is intercepted on the inner wall of the filter cylinder 504. During this process, the rotation of the rotating shaft 502 drives the slider 506 to move upward along the spiral groove, which in turn drives the scraper 505 and the two sliding rods 507 to move upward. The scraper 505 scrapes the gypsum particulate matter accumulated on the inner wall of the filter cylinder 504 upward. When the scraper 505 reaches the top of the filter cylinder 504, it contacts and squeezes the pressure ring 508. Then, the two springs 509 react with the pressure ring 508, so that the pressure ring 508 squeezes out the water in the gypsum particulate matter to form a gypsum cake.

[0029] In this embodiment: the top of the treatment cylinder 1 is provided with a water inlet pipe 2, which is fixed to the top of the support frame 501. The bottom of the treatment cylinder 1 is fixed with a sewage pipe 3, and a drain pipe 4 is fixed to one side of the treatment cylinder 1. Valves are fixedly installed in both the sewage pipe 3 and the drain pipe 4. A rotating ring is fixed to the inner side of the top of the treatment cylinder 1. A rotating groove that cooperates with the rotating ring is opened on the outer side of the top of the filter cylinder 504. The gypsum wastewater to be filtered is injected into the filter cylinder 504 through the water inlet pipe 2. The filtered gypsum wastewater is allowed to settle through the treatment cylinder 1. The top water after settling is discharged through the drain pipe 4, and the bottom gypsum after settling is discharged through the sewage pipe 3. The rotating ring in the rotating groove allows the filter cylinder 504 to rotate within the limited position of the treatment cylinder 1.

[0030] Working principle: The gypsum wastewater to be filtered is injected into the filter cylinder 504 through the inlet pipe 2. The motor 503 drives the rotating shaft 502 to rotate in the forward direction, which in turn drives the filter cylinder 504 to rotate. During the centrifugal motion of the gypsum wastewater being thrown out of the filter cylinder 504, the particulate matter in the gypsum wastewater is intercepted on the inner wall of the filter cylinder 504. In this process, the rotation of the rotating shaft 502 drives the slider 506 to move upward along the spiral groove, which in turn drives the scraper 505 and the two sliding rods 507 to move upward. The two sliding rods 507 slide in the two sliding grooves respectively. The scraper 505 scrapes the gypsum particulate matter accumulated on the inner wall of the filter cylinder 504 upward. The scraper 505 reaches the top of the filter cylinder 504 and contacts and squeezes the pressure ring 508. Then, the two springs 509 react on the pressure ring 508, so that the pressure ring 508 squeezes out the water in the gypsum particles to form a gypsum cake. The gypsum cake is removed and recycled. The motor 503 drives the rotating shaft 502 to rotate in the opposite direction. The rotation of the rotating shaft 502 drives the scraper 505 and the two slide rods 507 to move downward and reset. This periodic movement causes the filtered gypsum wastewater to settle at the bottom of the treatment cylinder 1. After the settling is complete, the valve of the drain pipe 4 is opened to discharge the water at the top after settling. Then, the valve of the sewage pipe 3 is opened to discharge the gypsum at the bottom after settling.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A plaster filter for dental mold production, comprising a processing cylinder (1), characterized in that: It also includes a filter self-cleaning mechanism (5), which is located inside the processing cylinder (1); The filter self-cleaning mechanism (5) includes a support frame (501), which is fixed to the upper side of the processing cylinder (1). A rotating shaft (502) is rotatably connected to the bottom of the support frame (501). A filter cylinder (504) is rotatably connected to the top of the inner side of the processing cylinder (1). A scraper (505) is slidably connected to the outer side of the rotating shaft (502). A slider (506) is fixed to the side of the scraper (505) near the rotating shaft (502). Slide rods (507) are fixed to both sides of the top of the scraper (505). The two slide rods (507) pass through and are slidably connected to the support frame (501). A pressure ring (508) is provided between the support frame (501) and the filter cylinder (504). Springs (509) are fixed between the top two sides of the pressure ring (508) and the bottom of the support frame (501).

2. A plaster filter for dental mold production according to claim 1, characterized in that: The top of the treatment cylinder (1) is provided with a water inlet pipe (2), which is fixed to the top of the support frame (501). The bottom of the treatment cylinder (1) is fixed with a sewage pipe (3), and a drain pipe (4) is fixed to one side of the treatment cylinder (1). Valves are fixedly installed inside both the sewage pipe (3) and the drain pipe (4).

3. A plaster filter for dental mold production according to claim 1, characterized in that: The top of the support frame (501) has two grooves that respectively cooperate with the two slide rods (507).

4. A plaster filter for dental mold production according to claim 1, characterized in that: The rotating shaft (502) is located inside the filter cylinder (504), and the bottom end of the rotating shaft (502) is fixedly connected to the bottom inner side of the filter cylinder (504).

5. A plaster filter for dental mold production according to claim 1, characterized in that: The scraper (505) has a trapezoidal cross-section, and the side of the scraper (505) away from the rotating shaft (502) is in contact with the inner wall of the filter cylinder (504).

6. A plaster filter for dental mold production according to claim 1, characterized in that: The surface of the rotating shaft (502) is provided with a spiral groove that cooperates with the slider (506), and a motor (503) is fixedly installed at the input end of the rotating shaft (502).

7. A plaster filter for dental mold production according to claim 1, characterized in that: A rotating ring is fixed on the inner side of the top of the processing cylinder (1), and a rotating groove that cooperates with the rotating ring is opened on the outer side of the top of the filter cylinder (504).

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