A sealing mechanism of a loss-in-weight scale discharging machine

Abstract

The utility model discloses a sealing mechanism of discharge machine for weightlessness scale, the utility model discloses a multilayer sealing structure, effectively promoted the sealing effect. The conical cylinder of closed cover is welded with the baffle avoidance groove, and sets up the sealing washer, and the connecting part of preliminary closed discharge box and sealing structure, the sealing groove of spacing cover cooperates with the sealing boss of sealing cover, and sets up the sealing washer in the middle, further enhances the sealing property, and temperature sensor can real -time monitoring the temperature change in sealing structure inside, when temperature is abnormally high, timely sends out the alarm, reminds the operator to check the equipment, prevents because temperature anomaly influence equipment normal operation or material property change, and dust concentration sensor can real -time monitoring the dust concentration in sealing structure inside, when detects the dust concentration and exceeds the set value, shows that possibly exists material leakage or dust accumulation problem, and the operator can adopt the measure in time and handle, guarantees the normal operation and production safety of equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of discharge machines for loss-in-weight scales, specifically a sealing mechanism for a discharge machine for loss-in-weight scales. Background Technology

[0002] In practical applications of loss-in-weight weighing discharge machines, the connection between the internal material conveying screw and the drive motor often suffers from poor sealing during operation. Traditional sealing methods are simple in structure but have limited sealing effect and cannot effectively prevent material leakage.

[0003] At the same time, due to the lack of effective monitoring methods, abnormalities inside the sealed structure cannot be detected in a timely manner.

[0004] Therefore, there is an urgent need to design a sealing mechanism for the discharge machine of a loss-in-weight scale that can solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a sealing mechanism for the discharge machine of a loss-in-weight scale to solve the problem.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A sealing mechanism for a discharge machine of a loss-in-weight scale includes a loss-in-weight scale body, a discharge box connected to the bottom outlet of the loss-in-weight scale body, a spiral rod inside the discharge box, spiral blades along the length of the spiral rod, a partition inside the discharge box, a discharge port at the end of the discharge box away from the partition, and the spiral rod connected to the output shaft of a drive motor through a sealing structure.

[0008] The sealing structure includes, from right to left, a closing cover, a limiting cover, a sealing cover, a positioning cover, and an end cover. The positioning cover and the limiting cover form a chamber. A temperature sensor is installed in the chamber, and a dust concentration sensor is symmetrically arranged between the temperature sensor and the end cover.

[0009] Furthermore, the output shaft of the drive motor is provided with a keyway inside, and the screw rod is provided with a convex key on the outside, and the convex key and the keyway are fitted together;

[0010] The above technical solution uses the internal keyway to engage with the external convex key of the screw rod, which transmits the power of the drive motor to the screw rod, causing the screw rod to rotate and thus realizing the material conveying function.

[0011] Furthermore, the partition plate is provided with a clearance groove, the sealing cover includes a conical cylinder welded to the clearance groove, the inside of the conical cylinder is provided with a sealing ring, the sealing cover is fitted and connected to the limiting cover, and the sealing cover and the limiting cover are fixed in position by bolts;

[0012] The above technical solution uses the tapered cylinder and the clearance groove on the partition to initially seal the connection between the discharge box and the sealing structure. The internal sealing ring enhances the sealing performance and is fitted with the limit cover and fixed in position by bolts to ensure a stable connection.

[0013] Furthermore, the inner sidewall of the limiting cover is provided with several sealing grooves, and the limiting cover and the sealing cover are fitted together, and the limiting cover and the positioning cover are fixed in position by bolts.

[0014] The above technical solution is used to fit and fix the sealing cover. The sealing groove on the inner side wall cooperates with the sealing protrusion of the sealing cover to further enhance the sealing effect. At the same time, it is fixed with the positioning cover by bolts, which plays the role of positioning and connecting other components.

[0015] Furthermore, the sealing cover is provided with a sealing protrusion for matching the sealing groove, a sealing gasket is provided between the sealing protrusion and the sealing groove, and a limiting groove is provided on the sealing cover;

[0016] Through the above technical solution, the sealing protrusion is adapted to the sealing groove of the limiting cover, the sealing gasket in the middle improves the sealing performance, and the limiting groove cooperates with the positioning plate of the positioning cover to achieve accurate positioning and prevent relative rotation of the parts.

[0017] Furthermore, the inner side of the positioning cover is provided with a bearing assembly, the positioning cover and the sealing cover are fitted together, the end cover is fixed to the positioning cover by bolts, and one end of the positioning cover is provided with a positioning plate for matching the limiting groove.

[0018] Through the above technical solution, the positioning cover and the limiting cover form a chamber for installing temperature sensors and dust concentration sensors, and the bearing assembly on the inner side supports the output shaft of the drive motor to ensure its smooth rotation.

[0019] Furthermore, the discharge box is provided with several inspection plates, the inspection plates are fixed to the discharge box by bolts, and a sealing ring is provided at the joint between the inspection plate and the discharge box;

[0020] The above technical solution, installed on the discharge box and fixed with bolts, facilitates the inspection, maintenance and cleaning of the inside of the discharge box.

[0021] Furthermore, the inner sidewall of the positioning cover has openings corresponding to the positions of the temperature sensor and the dust concentration sensor, and the probes of the temperature sensor and the dust concentration sensor are respectively embedded in the two openings. The temperature sensor and the dust concentration sensor are fixed to the positioning cover by bolts, and a sealing gasket is provided at the contact point between the temperature sensor, the dust concentration sensor and the positioning cover.

[0022] Through the above technical solution, the temperature sensor is installed in the chamber to monitor the temperature inside the sealed structure, preventing abnormal temperature from affecting the normal operation of the equipment or changing the properties of the material. It is fixed to the positioning cover with bolts, and there is a sealing gasket at the contact point to prevent material leakage or external impurities from entering. The dust concentration sensor monitors the dust concentration inside the sealed structure and can detect possible leaks or dust accumulation problems in a timely manner.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] In this utility model, the sealing mechanism for the discharge machine of the loss-in-weight scale achieves the following effects: 1. This utility model effectively improves the sealing effect through a multi-layer sealing structure. The conical cylinder of the sealing cover is welded to the partition clearance groove and a sealing ring is set to initially seal the connection between the discharge box and the sealing structure; the sealing groove of the limiting cover cooperates with the sealing protrusion of the sealing cover, and a sealing gasket is set in the middle to further enhance the sealing performance; this multi-layer sealing design can block materials and external impurities from entering the interior of the sealing structure from multiple levels, greatly reducing the possibility of material leakage, reducing material waste and environmental pollution, and ensuring the normal operation of the equipment; 2. A temperature sensor and a dust concentration sensor are installed in the cavity formed by the positioning cover and the limiting cover. The temperature sensor can monitor the temperature change inside the sealing structure in real time. When the temperature rises abnormally, an alarm is issued in time to remind the operator to check the equipment and prevent the abnormal temperature from affecting the normal operation of the equipment or changing the properties of the material; the dust concentration sensor can monitor the dust concentration inside the sealing structure in real time. When the dust concentration exceeds the set value, it indicates that there may be a material leakage or dust accumulation problem. The operator can take timely measures to deal with it and ensure the normal operation of the equipment and production safety. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of this utility model sealing device after disassembly.

[0027] Figure 3 This is a schematic diagram of the sealing structure of this utility model.

[0028] In the diagram: 1. Loss-in-weight scale body; 2. Discharge box; 201. Screw rod; 202. Screw blade; 203. Partition plate; 204. Discharge port; 3. Sealing structure; 301. Sealing cover; 302. Limiting cover; 303. Sealing cover; 304. Positioning cover; 305. End cover; 306. Chamber; 307. Temperature sensor; 308. Dust concentration sensor; 31. Conical cylinder; 32. Sealing groove; 33. Sealing protrusion; 333. Limiting groove; 34. Bearing assembly; 4. Drive motor output shaft. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0030] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are provided. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0031] Please see Figure 1-3 This embodiment provides a sealing mechanism for the discharge machine of a loss-in-weight scale. A precise keyway is machined inside the output shaft 4 of the drive motor, and a corresponding key is cast or machined on the outside of the screw rod 201. During equipment assembly, the key of the screw rod 201 is accurately embedded into the keyway of the output shaft 4 of the drive motor. Through this fitting method, when the drive motor starts rotating, the power of the output shaft 4 can be efficiently and stably transmitted to the screw rod 201, causing the screw rod 201 to rotate according to the set speed and direction, thereby achieving stable material conveying.

[0032] like Figure 1 and Figure 2 and Figure 3As shown, the conical cylinder 31 of the sealing cover 301 is manufactured according to the dimensions of the clearance groove on the partition 203. During welding, a suitable welding process, such as argon arc welding, is used to ensure a firm weld and good seal between the conical cylinder 31 and the clearance groove. Meanwhile, the sealing ring installed inside the conical cylinder 31 is made of wear-resistant and corrosion-resistant material, such as a silicone rubber sealing ring, to adapt to the characteristics of different materials and effectively prevent material leakage at the connection between the discharge box 2 and the sealing structure 3. The sealing groove 32 on the inner sidewall of the limiting cover 302 and the sealing protrusion 33 on the sealing cover 303 are precision machined to ensure the fitting accuracy of both. During assembly, the sealing protrusion 33 of the sealing cover 303 is embedded into the sealing groove 32 of the limiting cover 302, and a sealing gasket is placed between them. The sealing gasket is made of a material with good elasticity and sealing performance, such as a polytetrafluoroethylene (PTFE) sealing gasket. This multi-layer sealing structure 3 effectively prevents materials and external impurities from entering the interior of the sealing structure 3, improving sealing reliability. The limiting groove 333 on the sealing cover 303 and the positioning plate at one end of the positioning cover 304 are precisely machined according to design requirements. During assembly, the positioning plate of the positioning cover 304 is accurately embedded into the limiting groove 333 of the sealing cover 303 to achieve precise positioning, prevent relative rotation between components during equipment operation, and ensure the stability and sealing effect of the sealing structure 3.

[0033] like Figure 1 and Figure 3 As shown, openings are precisely made on the inner side wall of the positioning cover 304 corresponding to the positions of the temperature sensor 307 and the dust concentration sensor 308. The size and shape of the openings are designed according to the sensor probe size to ensure that the sensor probes can be tightly embedded inside the openings. When installing the sensors, bolts are used to fix the temperature sensor 307 and the dust concentration sensor 308 to the positioning cover 304, and a sealing gasket is placed at the contact point between the sensor and the positioning cover 304. During the monitoring of the discharge process of powdery materials, the temperature sensor 307 can monitor the temperature change inside the sealing structure 3 in real time. When the temperature rises abnormally, an alarm is issued in time to remind the operator to check whether the equipment is abnormally heated due to friction or other reasons. The dust concentration sensor 308 can monitor the dust concentration in real time. When the dust concentration exceeds the set value, it indicates that there may be a material leakage or dust accumulation problem. The operator can take timely measures to deal with it to ensure the normal operation of the equipment and production safety.

[0034] The working process of this utility model is as follows: When using the sealing mechanism of the discharge machine for the loss-in-weight scale, the material first enters the main body 1 of the loss-in-weight scale for precise measurement. When the set discharge conditions are met, the material flows out from the bottom outlet of the main body 1 and enters the discharge box 2 connected thereto. The drive motor starts, and its output shaft 4 engages with the external convex key of the screw rod 201 through the internal keyway, transmitting power to the screw rod 201, causing the screw rod 201 to start rotating. The spiral blades 202, which are arranged along the length of the screw rod 201, rotate together with the screw rod 201, pushing the material in the discharge box 2 from the end near the partition 203 to the end away from the partition 203 at the discharge port 204. Finally, the material is discharged from the discharge port 204, completing the discharge process.

[0035] During the material discharge process, the sealing structure 3 plays a crucial role. The sealing cover 301 is welded to the clearance groove on the partition plate 203 via a conical cylinder 31, and a sealing ring is provided inside the conical cylinder 31 to initially seal the connection between the discharge box 2 and the sealing structure 3, preventing material leakage. The sealing cover 301 is fitted into the limiting cover 302 and fixed with bolts to ensure a stable connection. The sealing groove 32 on the inner side wall of the limiting cover 302 cooperates with the sealing protrusion 33 on the sealing cover 303, and a sealing gasket is provided in the middle to further enhance the sealing effect. The limiting groove 333 on the sealing cover 303 is adapted to the positioning plate at one end of the positioning cover 304 to achieve accurate positioning and prevent relative rotation of components. The positioning cover 304 and the limiting cover 302 form a chamber 306, in which a temperature sensor 307 and a dust concentration sensor 308 are installed. Temperature sensor 307 is used to monitor the temperature inside the sealing structure 3 to prevent abnormal temperature from affecting the normal operation of the equipment or changing the properties of the materials. Dust concentration sensor 308 is used to monitor the dust concentration inside the sealing structure 3 to detect potential leaks or dust accumulation in a timely manner. The bearing assembly 34 inside the positioning cover 304 supports the output shaft 4 of the drive motor, ensuring its smooth rotation. End cover 305 is fixed to the positioning cover 304 with bolts, sealing one end of the sealing structure 3.

[0036] When the equipment has been running for a period of time, and it is necessary to inspect, repair and clean the inside of the discharge box 2, the discharge box 2 can be opened conveniently by removing the inspection plate that is fixed by bolts on the discharge box 2. The inspection plate is equipped with a sealing ring at the joint between it and the discharge box 2. When the inspection plate is reinstalled after the inspection is completed, the sealing performance can be guaranteed to prevent material leakage and the entry of external impurities.

[0037] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control circuit can be implemented by a person skilled in the art through simple circuit connection, which is common knowledge in the field. Therefore, this application will not explain the control method and circuit connection in detail.

[0038] 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 loss-in-weight feeder seal mechanism, characterized by: The system includes a loss-in-weight scale body (1), the bottom outlet of which is connected to a discharge box (2). The discharge box (2) is provided with a spiral rod (201) inside, and spiral blades (202) are provided along the length of the spiral rod (201). The discharge box (2) is provided with a partition (203) inside, and a discharge port (204) is provided at one end of the discharge box (2) away from the partition (203). The spiral rod (201) is connected to the output shaft (4) of the drive motor through a sealing structure (3). The sealing structure (3) includes, from right to left, a closing cover (301), a limiting cover (302), a sealing cover (303), a positioning cover (304), and an end cover (305). The positioning cover (304) and the limiting cover (302) form a chamber (306). A temperature sensor (307) is provided in the chamber (306), and a dust concentration sensor (308) is symmetrically provided on the temperature sensor (307).

2. A seal mechanism for a loss-in-weight feeder according to claim 1, wherein: The output shaft (4) of the drive motor has a keyway inside, and the screw rod (201) has a convex key on the outside, and the convex key and the keyway are fitted together.

3. A seal mechanism for a loss-in-weight feeder according to claim 1, wherein: The partition (203) is provided with a relief groove, and the sealing cover (301) includes a conical cylinder (31) welded to the relief groove. The conical cylinder (31) is provided with a sealing ring inside. The sealing cover (301) is fitted and connected to the limiting cover (302), and the sealing cover (301) and the limiting cover (302) are fixed in position by bolts.

4. A seal mechanism for a loss-in-weight feeder according to claim 3, wherein: The inner sidewall of the limiting cover (302) is provided with several sealing grooves (32), and the limiting cover (302) and the sealing cover (303) are fitted together. The limiting cover (302) and the positioning cover (304) are fixed in position by bolts.

5. A seal mechanism for a loss-in-weight feeder according to claim 1, wherein: The sealing cover (303) is provided with a sealing protrusion (33) for matching the sealing groove (32), and a sealing gasket is provided between the sealing protrusion (33) and the sealing groove (32). The sealing cover (303) is provided with a limiting groove (333).

6. A seal mechanism for a loss-in-weight feeder according to claim 5, wherein: The inner side of the positioning cover (304) is provided with a bearing assembly (34). The positioning cover (304) and the sealing cover (303) are fitted together. The end cover (305) is fixed to the positioning cover (304) by bolts. One end of the positioning cover (304) is provided with a positioning plate for matching the limiting groove (333).

7. A seal mechanism for a loss-in-weight feeder according to claim 5, wherein: The discharge box (2) is provided with several inspection plates. The inspection plates are fixed to the discharge box (2) by bolts, and a sealing ring is provided at the joint between the inspection plates and the discharge box (2).

8. A seal mechanism for a loss-in-weight feeder according to claim 1, wherein: The inner sidewall of the positioning cover (304) has openings corresponding to the positions of the temperature sensor (307) and the dust concentration sensor (308), and the probes of the temperature sensor (307) and the dust concentration sensor (308) are respectively embedded in the two openings. The temperature sensor (307) and the dust concentration sensor (308) are fixed to the positioning cover (304) by bolts, and a sealing gasket is provided at the contact point between the temperature sensor (307) and the dust concentration sensor (308) and the positioning cover (304).

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