Sanitary single-screw pump

Abstract

The utility model relates to the technical field of single-screw pumps, in particular to a sanitary single-screw pump which comprises a shell body, a base is installed at the bottom of the shell body, one end of the shell body is connected with a bearing seat in a clamped mode through an installation mechanism, and a motor is installed at one end of the bearing seat. The mounting mechanism comprises a butt joint assembly, a rotary extrusion assembly and an abutting assembly, the butt joint assembly is used for preliminarily abutting the bearing seat to the shell body, the rotary extrusion assembly is used for being matched with the butt joint assembly to unlock the position of the bearing seat, and the abutting assembly is used for being matched with the rotary assembly to lock the position of the bearing seat. The butt joint assembly comprises a movable rod which is slidably connected to the interior of the shell body. The tool is simple in structure and convenient to operate, a worker can assemble and disassemble parts through pressing and pulling operation, the worker does not need to twist bolts one by one for disassembly and overhaul, the labor amount of the worker is reduced, and the disassembly and overhaul efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of single screw pumps, in particular to a sanitary single screw pump. Background Art

[0002] At present, sanitary pumps are widely used in the field of medicine and food. They are used to transport liquid food and medicine. Centrifugal pumps and rotor pumps are used on the market to transport sanitary media, but these pumps have large pulsations, and certain working conditions may even affect the characteristics of the medium. The pulsation-free characteristics of single-screw pumps meet the needs of these working conditions. Conventional single-screw pumps are supported by bearing seats, and their internal bearings need to be lubricated with lubricating oil. The lubricating oil is easy to leak and pollute the production environment. In addition, the transmission universal joint connection part of the single-screw pump is lubricated with grease. Once it leaks, it will inevitably contaminate the medium. Therefore, conventional single-screw pumps are not suitable for transporting sanitary media.

[0003] In order to solve the above technical problems, a Chinese patent with announcement number CN218439737U in the prior art discloses a sanitary single-screw pump, including a feed shell, one end of which is connected to a discharge shell through a stator, and the other end of the feed shell is connected to a bearing seat, and both ends of the bearing seat are respectively sealed and connected to a transmission shaft through a dustproof component and a double seal, and one end of the transmission shaft extending into the feed shell is connected to a rotor through a flexible connecting rod, and the rotor cooperates with the stator.

[0004] Although the above-mentioned prior art solution avoids the contamination of the medium by the universal joint connection part and is suitable for conveying sanitary-grade media, the feed shell and the bearing seat are fixedly connected by multiple sets of screws after being fitted together. When inspecting the internal parts, the staff needs to turn each set of screws one by one to lock and unlock them. The disassembly and assembly operation is relatively cumbersome, which increases the workload of the staff and affects the efficiency of disassembly and assembly and maintenance. Utility Model Content

[0005] The utility model aims to provide a sanitary single screw pump to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A sanitary single-screw pump comprises a shell body, a base is installed at the bottom of the shell body, one end of the shell body is connected to a bearing seat through a mounting mechanism, one end of the bearing seat is installed with a motor, the mounting mechanism comprises a docking assembly, a rotary extrusion assembly and an abutment assembly, the docking assembly is used to preliminarily dock the bearing seat on the shell body, the rotary extrusion assembly is used to cooperate with the docking assembly to unlock the position of the bearing seat, and the abutment assembly is used to cooperate with the rotating assembly to lock the position of the bearing seat.

[0008] As a preferred solution of the utility model, the docking assembly includes a movable rod slidably connected to the inside of the shell body, a rotating groove is opened inside the shell body on the outside of the movable rod, a rotating plate is slidably connected to the inside of the rotating groove, the rotating plate and the movable rod are rotatably connected, a first spring is installed between the two ends of one side of the rotating plate and the inner wall of the rotating groove, a retraction groove is opened outside the shell body on the outside of the movable rod, a clamping block is installed at one end of the movable rod, a docking groove is opened on one side of the bearing seat, a clamping block is installed at one end of the movable rod, and the docking groove and the clamping block are slidably connected.

[0009] As a preferred solution of the utility model, the rotary extrusion assembly includes a mounting groove opened at one end of the bearing seat, the inner side of the mounting groove is rotatably connected to a chassis, second springs are installed at both ends of the top of the chassis, a docking plate is installed at the top of the second spring, a positioning block is installed on the top of the docking plate, and a positioning groove is opened at the bottom of the blocking block to be engaged with the positioning block.

[0010] As a preferred solution of the utility model, the abutment assembly includes abutment grooves opened at both ends of the inner wall of the installation groove, a third spring is installed on the inner side of the abutment groove, an abutment block is installed at one end of the third spring, the abutment block and the abutment groove are snap-fitted and connected, fixed blocks are installed at both ends of the top of the snap block, and a fixing groove is opened at the bottom end of the abutment block to be snap-fitted with the fixed block.

[0011] As a preferred solution of the utility model, an extension groove is provided on the other side of the shell body, and the end of the movable rod extending to the inner side of the extension groove is rotatably connected to a pull ring, and both ends of the clamping block and the opposite ends of the two groups of abutment blocks are provided with inclined surfaces, the cross-section of the clamping block is T-shaped, and the two groups of inclined surfaces fit each other.

[0012] As a preferred solution of the utility model, a closing groove is provided on the outside of the shell body on one side of the extension groove, a closing plate is slidably connected to the inner side of the closing groove, a buckle and pull groove is provided on one side of the closing plate, a limiting groove extending to the inner wall of the extension groove is provided on one side of the inner wall of the closing groove, and a limiting block slidably connected to the limiting groove is installed on one side of the closing plate.

[0013] As a preferred solution of the utility model, a magnetic strip is embedded in the bottom end of the closing plate, the extension groove is connected to the inner side of the closing groove, and an iron block adsorbed by the magnetic strip is embedded in the inner wall of the extension groove.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] In the utility model, the bearing seat is preliminarily docked on the shell body through the docking assembly, the rotating extrusion assembly cooperates with the docking assembly to unlock the position of the bearing seat, and the abutment assembly cooperates with the rotating assembly to lock the position of the bearing seat. The structure is simple and the operation is convenient. The staff can install and disassemble the components by pressing and pulling operations, and there is no need for personnel to twist the bolts one by one for disassembly and maintenance, which reduces the workload of the staff and improves the efficiency of disassembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a partial cross-sectional structural diagram of the connection between the housing body and the bearing seat of the utility model;

[0018] Figure 3 For this utility model Figure 1 Schematic diagram of the enlarged structure of part A.

[0019] In the figure: 1. Shell body; 2. Base; 3. Bearing seat; 4. Iron block; 5. Rotating plate; 6. Retraction groove; 7. Block; 8. Docking groove; 9. Chassis; 10. Docking plate; 11. Positioning block; 12. Abutment groove; 13. Abutment block; 14. Fixed block; 15. Closing groove; 16. Closing plate; 17. Limiting block; 18. Inclined surface; 19. Magnetic strip. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] Example:

[0022] See also Figure 1-Figure 3 , the utility model provides a technical solution:

[0023] A sanitary single-screw pump comprises a shell body 1, a base 2 is installed at the bottom of the shell body 1, one end of the shell body 1 is connected with a bearing seat 3 through a mounting mechanism, one end of the bearing seat 3 is installed with a motor, the mounting mechanism comprises a docking assembly, a rotating extrusion assembly and an abutting assembly, the docking assembly is used to initially dock the bearing seat 3 on the shell body 1, the rotating extrusion assembly is used to cooperate with the docking assembly to unlock the position of the bearing seat 3, and the abutting assembly is used to cooperate with the rotating assembly to lock the position of the bearing seat 3. When in use, the pump body can initially dock the bearing seat 3 on the shell body 1 through the docking assembly, the rotating extrusion assembly cooperates with the docking assembly to unlock the position of the bearing seat 3, and the abutting assembly cooperates with the rotating assembly to lock the position of the bearing seat 3. The pump body has a simple structure and is easy to operate. The staff can install and disassemble the components by pressing and pulling operations, and there is no need for the staff to twist the bolts one by one for disassembly and maintenance, which reduces the workload of the staff and improves the efficiency of disassembly and maintenance.

[0024] In this embodiment, if Figure 1 , Figure 2 and Figure 3 As shown, the docking assembly includes a movable rod slidably connected to the inside of the shell body 1, a rotating groove is opened inside the shell body 1 on the outside of the movable rod, a rotating plate 5 is slidably connected to the inside of the rotating groove, the rotating plate 5 is rotatably connected to the movable rod, and a first spring is installed between the two ends of one side of the rotating plate 5 and the inner wall of the rotating groove, a retraction groove 6 is opened outside the shell body 1 on the outside of the movable rod, a clamping block 7 is installed at one end of the movable rod, a docking groove 8 is opened on one side of the bearing seat 3, a clamping block 7 is installed at one end of the movable rod, and the docking groove 8 and the clamping block 7 are slidably connected. First, one end of the bearing seat 3 is inserted into the inner side of the shell body 1. At this time, the clamping block 7 is retracted inside the retraction groove 6 and does not hinder the bearing seat 3 from being pushed in and engaged.

[0025] In this embodiment, if Figure 1 , Figure 2 and Figure 3 As shown, the rotary extrusion assembly includes a mounting groove opened at one end of the bearing seat 3, and the inner side of the mounting groove is rotatably connected to the chassis 9, and the second springs are installed at both ends of the top of the chassis 9, and the top of the second spring is installed with a docking plate 10, and the top of the docking plate 10 is installed with a positioning block 11. The bottom end of the clamping block 7 is provided with a positioning groove that is engaged with the positioning block 11. Then, the movable rod is pressed to drive the clamping block 7, the docking plate 10 and the first spring to move downward, and then the chassis 9 is rotated. After the abutment block 13 is offset, the outer side of the bearing seat 3 is held and pulled to move it away from the shell body 1. The docking groove 8 and the mounting groove are both circular grooves, so that the clamping block 7 can be pulled out from the end of the docking groove 8.

[0026] In this embodiment, if Figure 1 , Figure 2 and Figure 3As shown, the abutment assembly includes an abutment groove 12 provided at both ends of the inner wall of the installation groove, a third spring is installed inside the abutment groove 12, an abutment block 13 is installed at one end of the third spring, the abutment block 13 is connected with the abutment groove 12 by snapping, both ends of the top of the block 7 are installed with fixed blocks 14, the bottom end of the abutment block 13 is provided with a fixed groove that is snapped with the fixed block 14, an extension groove is provided on the other side of the shell body 1, and a pull ring is rotatably connected to one end of the movable rod extending to the inner side of the extension groove, and inclined surfaces 18 are provided at both ends of the block 7 and the opposite ends of the two groups of abutment blocks 13, and the cross-section of the block 7 is T-shaped, and the two groups of inclined surfaces 18 fit each other. Further, hold the pull ring and continue to press the movable rod downward, driving the rotating plate 5 to stretch the first spring, and the two ends of the clamping block 7 contact the abutting blocks 13 on both sides. The inclined surfaces 18 of the two contact each other, and the abutting block 13 is squeezed to drive the third spring to retract. After the clamping block 7 and the fixed block 14 installed thereon continue to move downward and stagger the abutting block 13, the abutting block 13 rebounds. At this time, the positioning block 11 is inserted into the positioning groove, and the docking plate 10 compresses the second spring to retract, and then pulls back a distance, and the fixed block 14 is inserted into the inner side of the fixed groove, and the abutting block 13 and the docking plate 10 press the clamping block 7 tightly to complete the positioning and installation of the bearing seat 3.

[0027] In this embodiment, if Figure 1 , Figure 2 and Figure 3 As shown, a closing groove 15 is provided on the outside of the shell body 1 at one side of the extension groove, and a closing plate 16 is slidably connected to the inner side of the closing groove 15. A buckle groove is provided on one side of the closing plate 16, and a limiting groove extending to the inner wall of the extension groove is provided on one side of the inner wall of the closing groove 15. A limiting block 17 slidably connected to the limiting groove is installed on one side of the closing plate 16. A magnetic strip 19 is embedded in the bottom end of the closing plate 16, and the extension groove is connected to the inner side of the closing groove 15. An iron block 4 adsorbed by the magnetic strip 19 is embedded in the inner wall of the extension groove. Furthermore, the buckle groove limit block 17 drives the closing plate 16 to move along the limiting groove on the inner side of the closing groove 15 until it moves to the inner side of the extension groove, so that the magnetic strip 19 and the iron block cover the pull ring after adsorption to prevent the parts from loosening due to accidental touching by personnel after assembly.

[0028] The implementation principle of a sanitary single-screw pump in the embodiment of the present application is as follows: insert one end of the bearing seat 3 into the inner side of the shell body 1. At this time, the block 7 shrinks inside the retraction groove 6 and does not hinder the bearing seat 3 from being pushed in and engaged. Press the movable rod to drive the block 7, the docking plate 10 and the first spring to move downward, and then cooperate with the chassis 9 to rotate. After the abutment block 13 is offset, hold the outer side of the bearing seat 3 and pull it to move it away from the shell body 1. Both the docking groove 8 and the installation groove are circular grooves, so that the block 7 is pulled out from the end of the docking groove 8. Hold the pull ring and continue to press the movable rod downward to drive the rotating plate 5 to stretch the first spring. The two ends of the block 7 contact the abutment blocks 13 on both sides, and the inclined surfaces 18 of the two are connected to each other. The abutment block 13 is squeezed and drives the third spring to retract. After the clamping block 7 and the fixed block 14 installed thereon continue to move downward and stagger the abutment block 13, the abutment block 13 rebounds. At this time, the positioning block 11 is inserted into the positioning groove, and the docking plate 10 compresses the second spring to retract, and then pulls back a distance. The fixed block 14 is inserted into the inner side of the fixed groove, and the abutment block 13 and the docking plate 10 press the clamping block 7 tightly to complete the positioning and installation of the bearing seat 3. The buckle and pull groove limit block 17 drives the closing plate 16 to move along the limit groove on the inner side of the closing groove 15 until it moves to the inner side of the extension groove, so that the magnetic strip 19 and the iron block are adsorbed and cover the pull ring to prevent the parts from loosening due to accidental touch by personnel after assembly.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sanitary single screw pump, comprising a housing body (1), characterized in that: A base (2) is installed at the bottom of the shell body (1); one end of the shell body (1) is connected to a bearing seat (3) through a mounting mechanism; one end of the bearing seat (3) is installed with a motor; the mounting mechanism comprises a docking assembly, a rotating extrusion assembly and an abutment assembly; the docking assembly is used to initially dock the bearing seat (3) on the shell body (1); the rotating extrusion assembly is used to cooperate with the docking assembly to unlock the position of the bearing seat (3); and the abutment assembly is used to cooperate with the rotating assembly to lock the position of the bearing seat (3).

2. A sanitary single screw pump according to claim 1, characterized in that: The docking assembly comprises a movable rod slidably connected to the inside of the shell body (1); a rotating groove is provided inside the shell body (1) on the outside of the movable rod; a rotating plate (5) is slidably connected to the inside of the rotating groove; the rotating plate (5) is rotatably connected to the movable rod; a first spring is installed between the two ends of one side of the rotating plate (5) and the inner wall of the rotating groove; a retraction groove (6) is provided outside the shell body (1) on the outside of the movable rod; a clamping block (7) is installed at one end of the movable rod; a docking groove (8) is provided on one side of the bearing seat (3); a clamping block (7) is installed at one end of the movable rod; the docking groove (8) and the clamping block (7) are slidably connected.

3. A sanitary single screw pump according to claim 2, characterized in that: The rotary extrusion assembly comprises a mounting groove formed at one end of the bearing seat (3), a chassis (9) being rotatably connected to the inner side of the mounting groove, second springs being installed at both ends of the top of the chassis (9), a docking plate (10) being installed at the top of the second spring, a positioning block (11) being installed at the top of the docking plate (10), and a positioning groove for engaging with the positioning block (11) being formed at the bottom end of the clamping block (7).

4. A sanitary single screw pump according to claim 3, characterized in that: The abutment assembly comprises an abutment groove (12) provided at both ends of the inner wall of the installation groove, a third spring is installed inside the abutment groove (12), an abutment block (13) is installed at one end of the third spring, the abutment block (13) is connected to the abutment groove (12) in a snap-fitting manner, both ends of the top of the clamping block (7) are provided with a fixing block (14), and a fixing groove is provided at the bottom end of the abutment block (13) for snap-fitting with the fixing block (14).

5. A sanitary single screw pump according to claim 4, characterized in that: An extension groove is provided on the other side of the shell body (1); one end of the movable rod extending to the inner side of the extension groove is rotatably connected to a pull ring; both ends of the clamping block (7) and the opposite ends of the two groups of abutment blocks (13) are provided with inclined surfaces (18); the cross section of the clamping block (7) is T-shaped, and the two groups of inclined surfaces (18) are fitted together.

6. A sanitary single screw pump according to claim 5, characterized in that: The outer part of the shell body (1) is provided with a closing groove (15) on one side of the extension groove, the inner side of the closing groove (15) is slidably connected with a closing plate (16), one side of the closing plate (16) is provided with a buckle groove, one side of the inner wall of the closing groove (15) is provided with a limiting groove extending to the inner wall of the extension groove, and one side of the closing plate (16) is provided with a limiting block (17) slidably connected with the limiting groove.

7. A sanitary single screw pump according to claim 6, characterized in that: A magnetic strip (19) is embedded in the bottom end of the closing plate (16), the extension groove is connected to the inner side of the closing groove (15), and an iron block (4) adsorbed by the magnetic strip (19) is embedded in the inner wall of the extension groove.

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