Food-grade screw pump facilitating angle adjustment of inlet of split type suction cavity

Abstract

The utility model discloses a food-grade screw pump convenient to adjust the inlet angle of a split type suction cavity, which belongs to the field of screw pumps, and comprises a split type suction cavity, the split type suction cavity comprises a first suction cavity and a second suction cavity, a driving motor is connected with one end of the first suction cavity, the other end of the first suction cavity is provided with a first boss, and the other end of the second suction cavity is provided with a second boss. The first boss is a first taper table, the diameter of the end, away from the driving motor, of the first taper table is minimum, the stator is connected with one end of the second suction cavity, the other end of the second suction cavity is provided with a second boss, the end, away from the stator, of the second boss is provided with a second taper hole, and the first taper table can be matched with the second taper hole. External threads are arranged on the side wall of the second boss, a round nut is connected to the side wall of the second boss in a threaded mode, an inner boss is arranged at the end, close to the first boss, of the round nut, the inner boss can be clamped on a step of the first boss, when the round nut is rotated, the round nut enables the second boss to move towards the first boss, and the angle of an inlet of the suction cavity can be adjusted at will.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of screw pump, concretely relates to a food grade screw pump with split type suction chamber inlet angle adjustment. BACKGROUND

[0002] The inlet of the suction chamber of the screw pump is usually fixed, but the actual situation is affected by the installation environment, and the inlet angle of the suction chamber has to be adjusted, especially for large screw pumps, the suction chamber is usually set to a split type structure for convenient maintenance, which facilitates the adjustment of the inlet angle of the suction chamber, but the angle adjustment is limited by the flange mounting hole and cannot be adjusted at any angle.

[0003] In view of the above problems, the utility model discloses a food grade screw pump with split type suction chamber inlet angle adjustment to overcome the above defects. UTILITY MODEL CONTENTS

[0004] For the problems existing in the prior art, the food grade screw pump with split type suction chamber inlet angle adjustment can adjust the inlet angle of the suction chamber at any angle.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a food grade screw pump with split type suction chamber inlet angle adjustment, comprising a split type suction chamber, one end of the split type suction chamber is connected with a driving motor, the other end of the split type suction chamber is connected with a stator;

[0006] The split type suction chamber comprises a first suction chamber and a second suction chamber, the first suction chamber is provided with an inlet, the driving motor is connected with one end of the first suction chamber, the other end of the first suction chamber is provided with a first boss, the first boss is a first taper table, the diameter of the first taper table away from the driving motor is the smallest, the stator is connected with one end of the second suction chamber, the other end of the second suction chamber is provided with a second boss, the second boss is provided with a second taper hole away from the stator, and the first taper table can cooperate with the second taper hole.

[0007] The side wall of the second boss is provided with external threads, the side wall of the second boss is screwed with a round nut, the round nut is provided with an inner boss close to the first boss end, the inner boss can be clamped on the step of the first boss, and when the round nut is rotated, the round nut moves the second boss to the first boss direction.

[0008] Preferably, the inner diameter of the inner boss is smaller than the diameter of the first boss close to the driving motor end.

[0009] Preferably, the minimum aperture of the second tapered hole is larger than the inner diameter of the second suction cavity, and the innermost end face of the second tapered hole is provided with a sealing groove, and a sealing gasket is arranged in the sealing groove;

[0010] The second tapered end portion can abut on the sealing gasket.

[0011] Preferably, the taper of the second tapered hole is the same as the taper of the first tapered end.

[0012] Preferably, the second suction cavity is detachably connected with an anti-rotation foot near one end of the stator, and the anti-rotation foot can abut against the ground.

[0013] Preferably, the stator is provided with a rotor, the split suction cavity is provided with a transmission rod, one end of the transmission rod is connected with a driving motor, the other end of the transmission rod is connected with a connector, and the connector is detachably connected with the end portion of the rotor.

[0014] The connector is provided with a connecting hole near one end of the rotor, the rotor can be inserted into the connecting hole, radial through holes are arranged on the connector and the rotor, a connecting pin is inserted into the radial through holes of the connector and the rotor, a sealing sleeve is arranged on the side wall of the connector corresponding to the position of the radial through hole, and the sealing sleeve can block the radial through hole on the connector.

[0015] Preferably, a first sealing ring groove is arranged on the inner side wall of the connecting hole near the hole along, and a sealing ring is arranged in the first sealing ring groove.

[0016] Limiting structures are arranged on both ends of the sealing sleeve corresponding to the side wall of the connector, and the limiting structures can limit the axial movement of the sealing sleeve on the connector.

[0017] Two second sealing ring grooves are arranged between the sealing sleeve and the connector, the two second sealing ring grooves are arranged on the side wall of the connector on both sides of the radial through hole, and a sealing ring is also arranged in the second sealing ring groove.

[0018] Preferably, the limiting structure is a limiting step and a limiting check ring.

[0019] Preferably, the first suction cavity is provided with a necking structure near one end of the second suction cavity and near one end of the second suction cavity near the first suction cavity, and the first boss and the second boss are arranged on the necking structure.

[0020] The utility model has the advantages of:

[0021] 1. The inlet of the first suction cavity can be adjusted at will, and finally only the circular nut structure with an inner boss is used to drive the second boss to move towards the first boss, so that the first suction cavity and the second suction cavity are fastened.

[0022] 2. Since the stator replacement maintenance frequency is relatively high, in order to avoid the rotation of the round nut during the disassembly process of the stator, the anti-rotation leg originally connected at one end of the stator is transferred to the bottom of the second suction cavity, which not only can also reduce the vibration of the stator, but also can limit the rotation of the second suction cavity.

[0023] 3. The joint structure between the rotor and the transmission rod, by setting multiple sealing rings, avoids the medium from entering the gap, and ensures the food hygiene of the pump.

[0024] 4. The neck structure of the first suction cavity and the second suction cavity reduces the internal storage volume of the suction cavity, can reduce the medium storage amount, reduce the CIP flushing amount, and improves the flushing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0025] Fig. 1 It is a schematic view of a food-grade screw pump with a split type suction cavity inlet angle adjustment;

[0026] Fig. 2 It is a schematic view of the connection position of the first suction cavity and the second suction cavity of the utility model;

[0027] Fig. 3 It is a schematic view of the joint of the utility model.

[0028] In the figure: 1, first suction cavity; 2, second suction cavity; 3, stator; 4, driving motor; 5, rotor; 6, transmission rod; 7, joint; 8, anti-rotation leg; 9, inlet; 10, round nut; 11, first boss; 12, first taper table; 21, second boss; 22, sealing groove; 71, sealing sleeve; 72, connecting pin; 73, first sealing ring groove; 74, second sealing ring groove; 75, limiting structure; 101, inner boss. DETAILED DESCRIPTION

[0029] In order to facilitate those skilled in the art to understand, the utility model will be further described below in combination with the drawings.

[0030] As Figs. 1 to 3 shown, a food-grade screw pump with a split type suction cavity inlet angle adjustment, comprising a split type suction cavity, the split type suction cavity is connected with a driving motor 4 at one end, and the split type suction cavity is connected with a stator 3 at the other end.

[0031] The utility model discloses a split type suction cavity, which comprises a first suction cavity 1 and a second suction cavity 2, the first suction cavity 1 is provided with an inlet 9, the second suction cavity 2 can also be provided with the inlet 9, a driving motor 4 is connected to one end of the first suction cavity 1, the other end of the first suction cavity 1 is provided with a first boss 11, the first boss 11 is provided with a first taper table 12, the diameter of the first taper table 12 far away from the driving motor 4 is the smallest, a stator 3 is connected to one end of the second suction cavity 2, the other end of the second suction cavity 2 is provided with a second boss 21, the second boss 21 is provided with a second taper hole far away from the stator 3, the taper of the second taper hole is the same as that of the first taper table 12, and the first taper table 12 can be matched with the second taper hole.

[0032] In order to ensure that the first suction cavity 1 and the second suction cavity 2 are tightly connected, the side wall of the second boss 21 is provided with external threads, the side wall of the second boss 21 is screwed with a round nut 10, the end of the round nut 10 close to the first boss 11 is provided with an inner boss 101, the inner boss 101 is composed of a plurality of arc-shaped pieces, the arc-shaped pieces can be connected to the end of the first boss 11 through screws, the inner diameter of the inner boss 101 is smaller than the diameter of the end of the first boss 11 close to the driving motor 4, the inner boss 101 can be clamped on the step of the first boss 11, the step refers to the side of the first boss 11 far away from the second suction cavity 2, and when the round nut 10 is rotated, the round nut 10 will move the second boss 21 to the direction of the first boss 11.

[0033] The utility model discloses that the inlet 9 of the first suction cavity 1 can be adjusted at will, finally only need to utilize the round nut 10 structure of taking the inner boss 101 to drive the second boss 21 to move to the direction of the first boss 11, realized the fastening of the first suction cavity 1 and the second suction cavity 2.

[0034] The smallest aperture of the second taper hole is larger than the inner diameter of the second suction cavity 2, the end face of the innermost part of the second taper hole is provided with a sealing groove 22, a sealing gasket is arranged in the sealing groove 22, the end of the second taper table can abut on the sealing gasket, and the sealing property of the connecting position between the first suction cavity 1 and the second suction cavity 2 is ensured.

[0035] The utility model discloses that the end close to the stator 3 of the second suction cavity 2 is detachably connected with an anti-rotation supporting leg 8, and the anti-rotation supporting leg 8 can abut on the ground, which is because the stator 3 has a relatively high frequency of replacement and maintenance, in order to avoid the rotation of the round nut 10 in the process of disassembling the stator 3, the anti-rotation supporting leg 8 originally connected to one end of the stator 3 is transferred to the bottom of the second suction cavity 2, which not only can also reduce the vibration of the stator 3, but also can limit the rotation of the second suction cavity 2.

[0036] The utility model discloses that the stator 3 is provided with a rotor 5, the split type suction cavity is provided with a transmission rod 6, one end of the transmission rod 6 is connected with the driving motor 4, the other end of the transmission rod 6 is connected with a connector 7, and the connector 7 is detachably connected with the end of the rotor 5.

[0037] The joint 7 is provided with a connecting hole near one end of the rotor 5, the rotor 5 can be inserted into the connecting hole, the joint 7 and the rotor 5 are both provided with a radial through hole, a connecting pin 72 is simultaneously inserted into the radial through holes of the joint 7 and the rotor 5, the joint 7 is provided with a sealing sleeve 71 corresponding to the position of the radial through hole on the side wall, and the sealing sleeve 71 can block the radial through hole on the joint 7.

[0038] In order to avoid that the medium enters into the connecting gap and ensure the food hygiene of the pump, the connecting hole is provided with a first sealing ring groove 73 on the inner side wall near the hole along, the first sealing ring groove 73 is provided with a sealing ring, the sealing sleeve 71 is provided with a limiting structure 75 on the side wall corresponding to the joint 7 at both ends, the limiting structure 75 is preferably a limiting step and a limiting check ring, the limiting structure 75 can limit the axial movement of the sealing sleeve 71 on the joint 7, the sealing sleeve 71 and the joint 7 are provided with two second sealing ring grooves 74, the two second sealing ring grooves 74 are arranged on the side wall of the joint 7 on the two sides of the radial through hole, and the second sealing ring grooves 74 are also provided with sealing rings.

[0039] The first suction cavity 1 is preferably provided with a neck-in structure near one end of the second suction cavity 2 and near one end of the second suction cavity 2 close to the first suction cavity 1, the first boss 11 and the second boss 21 are arranged on the neck-in structure, and the above structure reduces the internal storage volume of the suction cavity, can reduce the medium storage amount, reduce the CIP flushing amount, and improve the flushing efficiency.

[0040] It should be understood that the use of these embodiments is only for the purpose of illustrating the present application and is not intended to limit the protection scope of the present application. In addition, it should also be understood that after reading the technical content of the present application, those skilled in the art can make various modifications, modifications and / or variations to the present application, and all these equivalent forms also fall within the protection scope defined by the appended claims of the present application.

Claims

1. A food-grade screw pump with easily adjustable inlet angle for a split-type suction chamber, characterized in that, It includes a split-type suction chamber, one end of which is connected to a drive motor (4), and the other end of which is connected to a stator (3); The split-type suction chamber includes a first suction chamber (1) and a second suction chamber (2). The drive motor (4) is connected to one end of the first suction chamber (1). The other end of the first suction chamber (1) is provided with a first boss (11). The first boss (11) is set as a first tapered platform (12). The diameter of the first tapered platform (12) is the smallest at the end away from the drive motor (4). The stator (3) is connected to one end of the second suction chamber (2). The other end of the second suction chamber (2) is provided with a second boss (21). The end of the second boss (21) away from the stator (3) is provided with a second tapered hole. The first tapered platform (12) can cooperate with the second tapered hole. The second boss (21) has an external thread on its side wall, and a round nut (10) is screwed onto the side wall of the second boss (21). The round nut (10) has an inner boss (101) near the end of the first boss (11). The inner boss (101) can be locked on the step of the first boss (11). When the round nut (10) is rotated, the round nut (10) causes the second boss (21) to move toward the first boss (11).

2. The food-grade screw pump with convenient adjustable inlet angle of the split-type suction chamber according to claim 1, characterized in that, The inner diameter of the inner boss (101) is smaller than the diameter of the first boss (11) near the end of the drive motor (4).

3. A food-grade screw pump with convenient adjustable inlet angle of the split-type suction chamber according to claim 1, characterized in that, The minimum diameter of the second tapered hole is greater than the inner diameter of the second suction chamber (2). The innermost end face of the second tapered hole is provided with a sealing groove (22), and a sealing gasket is provided in the sealing groove (22). The end of the second tapered platform can abut against the sealing gasket.

4. A food-grade screw pump with convenient adjustable inlet angle of the split-type suction chamber according to claim 1, characterized in that, The taper of the second taper hole is the same as the taper of the first taper platform (12).

5. A food-grade screw pump with convenient adjustable inlet angle of the split-type suction chamber according to claim 1, characterized in that, The second suction chamber (2) is detachably connected to an anti-rotation support foot (8) at one end near the stator (3), and the anti-rotation support foot (8) can touch the ground.

6. A food-grade screw pump with convenient adjustable inlet angle of a split-type suction chamber according to claim 1, characterized in that, The stator (3) is provided with a rotor (5), and the split suction chamber is provided with a transmission rod (6). One end of the transmission rod (6) is connected to the drive motor (4), and the other end of the transmission rod (6) is connected to a connector (7). The connector (7) is detachably connected to the end of the rotor (5). The connector (7) has a connecting hole at one end near the rotor (5), and the rotor (5) can be inserted into the connecting hole. Both the connector (7) and the rotor (5) have radial through holes. A connecting pin (72) is inserted into the radial through holes of both the connector (7) and the rotor (5). A sealing sleeve (71) is provided on the side wall of the connector (7) corresponding to the position of the radial through hole. The sealing sleeve (71) can block the radial through hole on the connector (7).

7. A food-grade screw pump with convenient adjustable inlet angle of a split-type suction chamber according to claim 6, characterized in that, The inner wall of the connecting hole near the edge of the hole is provided with a first sealing ring groove (73), and a sealing ring is provided in the first sealing ring groove (73); The sealing sleeve (71) has a limiting structure (75) on the side wall of the connector (7) at both ends. The limiting structure (75) can restrict the sealing sleeve (71) from moving axially on the connector (7). Two second sealing ring grooves (74) are provided between the sealing sleeve (71) and the connector (7). The two second sealing ring grooves (74) are respectively provided on the side wall of the connector (7) on both sides of the radial through hole. A sealing ring is also provided in the second sealing ring groove (74).

8. A food-grade screw pump with convenient adjustable inlet angle of a split-type suction chamber according to claim 7, characterized in that, The limiting structure (75) is configured as a limiting step and a limiting retaining ring.

9. A food-grade screw pump with convenient adjustable inlet angle of a split-type suction chamber according to claim 1, characterized in that, The first suction chamber (1) near the second suction chamber (2) and the second suction chamber (2) near the first suction chamber (1) are both provided with a necking structure, and the first boss (11) and the second boss (21) are both provided on the necking structure.

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