Single-screw pump for conveying food pulp

Abstract

The utility model relates to the technical field of single-screw pumps, in particular to a single-screw pump for conveying food pulp, which comprises a feed pipe, a shaft seat fixedly mounted at the front end of the feed pipe, a transmission shaft rotatably connected inside the shaft seat, a discharge shell fixedly mounted at the rear end of the feed pipe, and a screw body mounted inside the discharge shell. A connecting shaft is installed in the feeding pipe and located between the screw rod body and the transmission shaft. The transmission shaft and the screw rod body are fixedly connected with the connecting shaft through a connecting mechanism. The connecting mechanism comprises connectors fixedly connected to the two ends of the connecting shaft, butt joints are fixedly connected to the ends, close to the connectors, of the transmission shaft and the screw body, linear pins are inserted into the butt joints and the connectors, and first rubber sealing sleeves are in threaded connection with the outer sides of the two connectors correspondingly. By means of the design, pollution can be avoided when food pulp is conveyed, the sanitary requirement is met, and the practicability of the single-screw pump is improved.

Description

Technical Field

[0001] This utility model relates to the field of single screw pump technology, specifically to a single screw pump for conveying food slurry. Background Technology

[0002] A single-screw transfer pump's main working components are an eccentric helical screw and a screw bushing with a double-helix inner surface. Its working principle is that when the motor drives the pump shaft to rotate, the screw rotates around its own axis while simultaneously rolling along the inner surface of the bushing, thus forming a sealed chamber. Each rotation of the screw propels the liquid in the sealed chamber forward by one screw pitch. With continuous screw rotation, the liquid spirals from one sealed chamber to another, finally being expelled from the pump body.

[0003] The existing single screw pump technology has the following problems: Due to the high hygiene requirements of food slurries, the universal joint of the traditional single screw pump currently consists of a pin, pin sleeve, pin ring, retaining ring, and rubber sleeve. The pin, pin sleeve, and pin ring are all made of tool steel and lubricated with grease. The transported food slurry will be contaminated, which does not meet the hygiene requirements and reduces the practicality of the single screw pump.

[0004] Therefore, it is of great importance to design a single screw pump for conveying food slurry to solve the above-mentioned defects. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model designs a single-screw pump for conveying food slurry. This single-screw pump aims to solve the technical problem that existing single-screw pumps are prone to contamination when conveying food slurry, failing to meet hygiene requirements and reducing the practicality of single-screw pumps.

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

[0007] A single screw pump for conveying food slurry includes a feed pipe, a bearing fixedly mounted at the front end of the feed pipe, a drive shaft rotatably connected inside the bearing, a discharge shell fixedly mounted at the rear end of the feed pipe, a screw body installed inside the discharge shell, and a connecting shaft installed inside the feed pipe between the screw body and the drive shaft. The drive shaft and the screw body are both fixedly connected to the connecting shaft through a connecting mechanism.

[0008] The connecting mechanism includes connectors fixedly connected to both ends of the connecting shaft. The drive shaft and the screw body are both fixedly connected to a connector at the end near the connector. A pin is inserted into the inside of the connector and the connector. A first rubber sealing sleeve is threaded to the outside of both sets of connectors. A second rubber sealing sleeve is threaded to the outside of both sets of connectors.

[0009] As a preferred embodiment of this utility model, a mating groove is provided inside the connector at a position corresponding to the connector head, and slots are provided inside both the connector head and the connector at positions corresponding to the pins.

[0010] As a preferred embodiment of this utility model, a first rubber sealing ring is fitted on the outer side of the connector and on the inner side of the first rubber sealing sleeve, and a second rubber sealing ring is fitted on the outer side of the connector and on the inner side of the second rubber sealing sleeve.

[0011] As a preferred embodiment of this utility model, a feed connector is fixedly connected to the outside of the feed pipe, and a first cleaning cap and a second cleaning cap are respectively threaded to both ends of the feed pipe.

[0012] As a preferred embodiment of this utility model, the drive shaft is rotatably connected to the shaft seat through two sets of bearings, and a shaft seal is installed on the outer end of the drive shaft near the feed pipe.

[0013] As a preferred embodiment of this utility model, a discharge cover is fixedly installed at the rear end of the discharge shell, and the discharge cover has a trumpet-shaped structure design. A bushing is installed inside the discharge shell and on the outside of the screw body.

[0014] As a preferred embodiment of this utility model, a connecting sleeve is fixedly connected to the outer side of the connecting shaft, and a spiral blade is fixedly connected to the outer side of the connecting sleeve.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] In this invention, the connecting mechanism is designed so that the connectors at both ends of the connecting shaft are inserted into the interior of the mating joint, and then a slotted pin is inserted for connection. A first rubber sealing sleeve and a second rubber sealing sleeve are then threaded onto the joint. The first rubber sealing sleeve seals the connection between the connector and the mating joint. Simultaneously, the first rubber sealing sleeve is elastic, allowing the connector to move freely without being restricted, thus enabling the screw body to operate normally. The second rubber sealing sleeve seals the outside of the slotted pin. The first rubber sealing ring, in conjunction with the first rubber sealing sleeve, forms a double seal, thereby improving the sealing performance between the connector and the mating joint. The second rubber sealing ring further enhances the sealing performance of the inner side of the second rubber sealing sleeve, thus preventing contamination during the transport of food slurry, meeting hygiene requirements, and improving the practicality of the single screw pump. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall internal structure of this utility model;

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0020] In the diagram: 1. Feed pipe; 101. Feed connector; 102. First cleaning cap; 103. Second cleaning cap; 2. Shaft seat; 3. Drive shaft; 301. Bearing; 302. Shaft seal; 4. Discharge shell; 401. Discharge cover; 402. Bushing; 5. Screw body; 6. Connecting shaft; 601. Connecting sleeve; 602. Spiral blade; 7. Connecting mechanism; 701. Connector; 702. Butt joint; 703. Slotted pin; 704. First rubber sealing sleeve; 705. Second rubber sealing sleeve; 706. Butt groove; 707. Slot; 708. First rubber sealing ring; 709. Second rubber sealing ring. Detailed Implementation

[0021] 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.

[0022] Example: Please refer to Figures 1-3 This utility model provides a technical solution:

[0023] A single screw pump for conveying food slurry includes a feed pipe 1, a bearing seat 2 fixedly installed at the front end of the feed pipe 1, a drive shaft 3 rotatably connected inside the bearing seat 2, a discharge shell 4 fixedly installed at the rear end of the feed pipe 1, a screw body 5 installed inside the discharge shell 4, and a connecting shaft 6 installed inside the feed pipe 1 and between the screw body 5 and the drive shaft 3. The drive shaft 3 and the screw body 5 are both fixedly connected to the connecting shaft 6 through a connecting mechanism 7.

[0024] First, in this embodiment, the specific structure of the connecting mechanism 7 is as follows:

[0025] The connecting mechanism 7 includes connectors 701 fixedly connected to both ends of the connecting shaft 6. A mating joint 702 is fixedly connected to the end of the drive shaft 3 and the screw body 5 near the connectors 701. A slotted pin 703 is inserted into the interior of the mating joint 702 and the connectors 701. A first rubber sealing sleeve 704 is threaded onto the outer side of both sets of connectors 701, and a second rubber sealing sleeve 705 is threaded onto the outer side of both sets of mating joints 702. The connectors 701 at both ends of the connecting shaft 6 are inserted into the interior of the mating joint 702, and then the slotted pin 703 is inserted for connection. The first rubber sealing sleeve 704 and the second rubber sealing sleeve 705 are installed. The first rubber sealing sleeve 704 seals the connection between the connector 701 and the mating joint 702. At the same time, the first rubber sealing sleeve 704 is elastic, and the connector 701, which has a certain degree of mobility, is not restricted by the first rubber sealing sleeve 704, allowing the screw body 5 to work normally. The second rubber sealing sleeve 705 seals the outside of the slotted pin 703, thereby preventing contamination when conveying food slurry, meeting hygiene requirements, and improving the practicality of the single screw pump.

[0026] Furthermore, a mating groove 706 is provided inside the connector 702 at a position corresponding to the connector 701. Slots 707 are provided inside both the connector 701 and the connector 702 at positions corresponding to the pin 703. The connector 701 is inserted into the connector 702 through the mating groove 706 for easy mating. After mating, the pin 703 is inserted into the slot 707 to facilitate connection between the connector 701 and the connector 702.

[0027] Then, a first rubber sealing ring 708 is fitted on the outside of the connector 702 and on the inside of the first rubber sealing sleeve 704, and a second rubber sealing ring 709 is fitted on the outside of the connector 702 and on the inside of the second rubber sealing sleeve 705. The first rubber sealing ring 708 and the first rubber sealing sleeve 704 form a double seal, thereby improving the sealing performance between the connector 701 and the connector 702, while the second rubber sealing ring 709 improves the sealing performance of the inside of the second rubber sealing sleeve 705.

[0028] Furthermore, a feed connector 101 is fixedly connected to the outside of the feed pipe 1. A first cleaning cap 102 and a second cleaning cap 103 are threaded to both ends of the feed pipe 1, respectively. Food slurry is introduced into the feed pipe 1 through the feed connector 101. The first cleaning cap 102 and the second cleaning cap 103 at both ends of the feed pipe 1 can be unscrewed, so that water can be introduced to clean the inside of the feed pipe 1 without disassembly when it is not working, which further improves the practicality of the single screw pump.

[0029] The drive shaft 3 is rotatably connected to the bearing seat 2 via two sets of bearings 301. A shaft seal 302 is installed on the outer end of the drive shaft 3 near the feed pipe 1. The outer end of the drive shaft 3 located on the outside of the bearing seat 2 is connected to the motor via a coupling. The drive shaft 3 is driven to rotate by the motor. The drive shaft 3 rotates inside the bearing seat 2 via the bearings 301, and the shaft seal 302 ensures the sealing of the connection between the bearing seat 2 and the feed pipe 1.

[0030] Secondly, a discharge cover 401 is fixedly installed at the rear end of the discharge shell 4, and the discharge cover 401 has a trumpet-shaped structure design. A bushing 402 is installed inside the discharge shell 4 and outside the screw body 5. The screw body 5 conveys the food slurry by rotating inside the bushing 402, and finally extrudes it through the discharge cover 401. When discharging the food slurry, the trumpet-shaped discharge cover 401 can effectively improve the discharge efficiency and avoid blockage.

[0031] Finally, a connecting sleeve 601 is fixedly connected to the outside of the connecting shaft 6, and a spiral blade 602 is fixedly connected to the outside of the connecting sleeve 601. The connecting sleeve 601 is fixedly connected to the outside of the connecting shaft 6. When the connecting shaft 6 rotates, the spiral blade 602 on the outside of the connecting sleeve 601 rotates accordingly. The spiral blade 602 can provide additional thrust to the food slurry, thereby improving the conveying efficiency of the food slurry.

[0032] In this embodiment, the specific implementation scenario is as follows: the connectors 701 at both ends of the connecting shaft 6 are inserted into the interior of the mating connector 702, followed by the insertion of a slotted pin 703 for connection. A first rubber sealing sleeve 704 and a second rubber sealing sleeve 705 are then threaded onto the shaft. The first rubber sealing sleeve 704 seals the connection between the connector 701 and the mating connector 702. Simultaneously, the first rubber sealing sleeve 704 is elastic, ensuring that the connector 701, which has a certain degree of mobility, is not restricted by it, allowing the screw body 5 to function normally. The second rubber sealing sleeve 705... To seal the outer side of the pin 703, a double seal is formed by the first rubber sealing ring 708 and the first rubber sealing sleeve 704, thereby improving the sealing performance between the connector 701 and the mating joint 702. The second rubber sealing ring 709 improves the sealing performance of the inner side of the second rubber sealing sleeve 705, thus preventing contamination and meeting hygiene requirements when conveying food slurry. The entire operation process is simple and convenient. This utility model, through its design, can prevent contamination and meet hygiene requirements when conveying food slurry, and improves the practicality of the single screw pump.

[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 single screw pump for conveying food slurry, comprising a feed pipe (1), characterized in that: A bearing seat (2) is fixedly installed at the front end of the feed pipe (1), and a drive shaft (3) is rotatably connected inside the bearing seat (2). A discharge shell (4) is fixedly installed at the rear end of the feed pipe (1), and a screw body (5) is installed inside the discharge shell (4). A connecting shaft (6) is installed inside the feed pipe (1) and between the screw body (5) and the drive shaft (3). The drive shaft (3) and the screw body (5) are both fixedly connected to the connecting shaft (6) through a connecting mechanism (7). The connecting mechanism (7) includes connectors (701) fixedly connected to both ends of the connecting shaft (6). The drive shaft (3) and the screw body (5) are both fixedly connected to a connector (702) near the connector (701). A pin (703) is inserted into the inside of the connector (702) and the connector (701). The outer sides of the two sets of connectors (701) are threaded with a first rubber sealing sleeve (704), and the outer sides of the two sets of connectors (702) are threaded with a second rubber sealing sleeve (705).

2. A single screw pump for conveying food slurry according to claim 1, characterized in that: The mating joint (702) has a mating groove (706) at the position corresponding to the connector (701) inside, and slots (707) are provided at the positions corresponding to the pin (703) inside both the connector (701) and the mating joint (702).

3. A single screw pump for conveying food slurry according to claim 1, characterized in that: A first rubber sealing ring (708) is fitted on the outside of the connector (702) and on the inside of the first rubber sealing sleeve (704), and a second rubber sealing ring (709) is fitted on the outside of the connector (702) and on the inside of the second rubber sealing sleeve (705).

4. A single screw pump for conveying food slurry according to claim 1, characterized in that: The feed pipe (1) is fixedly connected to the outside of the feed connector (101), and the two ends of the feed pipe (1) are respectively threaded with a first cleaning cap (102) and a second cleaning cap (103).

5. A single screw pump for conveying food slurry according to claim 1, characterized in that: The drive shaft (3) is rotatably connected to the bearing seat (2) through two sets of bearings (301), and a shaft seal (302) is installed on the outer side of the drive shaft (3) near the feed pipe (1).

6. A single screw pump for conveying food slurry according to claim 1, characterized in that: The discharge shell (4) is fixedly installed with a discharge cover (401) at its rear end, and the discharge cover (401) is designed in a trumpet shape. A bushing (402) is installed inside the discharge shell (4) and outside the screw body (5).

7. A single screw pump for conveying food slurry according to claim 1, characterized in that: A connecting sleeve (601) is fixedly connected to the outside of the connecting shaft (6), and a spiral blade (602) is fixedly connected to the outside of the connecting sleeve (601).

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