A screw pump with a reinforced screw structure

Abstract

The present invention relates to the technical field of screw pumps, and in particular to a screw pump with a reinforced screw structure. It comprises: a feed pump body, which is composed of a feed part and a storage part; a feed pipe, which is fixedly connected and communicated with the storage part of the feed pump body; a servo motor, which is fixedly connected to the feed pump body; an adjustment shell, which is fixedly connected and communicated with the storage part of the feed pump body, and the adjustment shell is sealingly and slidably connected with a piston shaft; a first elastic push rod, the adjustment shell is fixedly connected with a first connecting piece, the first elastic push rod is fixedly connected to the first connecting piece of the adjustment shell, and the telescopic end of the first elastic push rod is fixedly connected to the piston shaft. The present invention makes the piston shaft slide downward when the clot is deposited between the screw and the bushing, thereby reducing the material entering the sealing chamber, reducing the contact area between the material and the screw, reducing the degree of screw wear and the motor running load, improving the sealing degree of the screw to the bushing, and extending the service life of the motor.

Description

Technical Field

[0001] The invention relates to the technical field of screw pumps, and in particular to a screw pump with a reinforced screw structure. Background Art

[0002] A screw pump is a positive displacement pump, mainly used to transport various viscous media, such as oil, resin, paint, food slurry, etc. It can also be used to transport liquids containing solid particles. Different fields and different needs use different types of screw pumps. Screw pumps are mainly divided into single screw pumps, twin screw pumps and three screw pumps. The main working parts of a single screw pump are the eccentric spiral screw (called the rotor) and the screw bushing (called the stator) with a double-line spiral surface on the inner surface. On the one hand, the screw rotates around its own axis, and on the other hand, it rolls along the inner surface of the bushing, thus forming a continuous sealed chamber. For every rotation of the screw, the liquid in the sealed chamber advances one pitch forward. As the screw rotates continuously, Finally, the pump body is extruded to realize the transportation of materials. Some viscous substances will show colloidal characteristics in a humid environment, causing the materials to attract each other and form clots. When the screw pump is used to transport such materials in a humid environment, external moisture can easily penetrate into the interior of the viscous substance, causing the viscous substance to combine with water to form clots. The clots will be deposited between the screw and the bushing during transportation and cannot be discharged, increasing the feeding resistance, thereby increasing the wear of the screw and the load of the motor, resulting in a loose fit between the screw and the bushing, and the motor is damaged due to being in a high load environment for a long time. In view of this, the present invention proposes a screw pump with a strengthened screw-to-bushing sealing structure and reduced motor load to solve the above problems. Summary of the invention

[0003] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides a screw pump with a reinforced screw structure.

[0004] The technical solution is: a screw pump with a reinforced screw structure, comprising:

[0005] The feeding pump body is composed of a feeding part and a storage part;

[0006] A feed pipe, fixedly connected to and communicated with the material storage portion of the feed pump body;

[0007] A servo motor is fixedly connected to the feed pump body and is used to drive the feed pump body to feed materials;

[0008] An adjusting shell is fixedly connected to and communicated with the material storage portion of the material delivery pump body, and the adjusting shell is sealingly and slidably connected to the piston shaft;

[0009] A first elastic push rod, the outside of the adjusting shell is fixedly connected with a first connecting piece, the first elastic push rod is fixedly connected to the first connecting piece of the adjusting shell, and the telescopic end of the first elastic push rod is fixedly connected to the piston shaft;

[0010] A material maintenance component, arranged on the feed pipe, for maintaining the content of the material in the material storage part of the feed pump body;

[0011] The load detection component is arranged at the power input end of the feed pump body and is used to detect the load during the operation of the servo motor.

[0012] Furthermore, the material maintenance component includes:

[0013] A valve, arranged on the feed pipe, for adjusting the injection speed of the material in the material storage part of the feed pump body;

[0014] The rack frame is fixedly connected to the telescopic end of the first elastic push rod, the handle of the valve is fixedly connected to the first gear, and the rack frame is meshed with the first gear.

[0015] Furthermore, the load detection component includes:

[0016] A spline shaft, arranged on the output shaft of the servo motor;

[0017] A docking ring is arranged on the spline shaft, the docking ring is rotatably connected to the power input end of the feed pump body, and the spline shaft is spline-connected to the docking ring;

[0018] A trigger rod, fixedly connected to the docking ring;

[0019] The transmission assembly is arranged on the input end of the feed pump body and is used to drive the telescopic end of the first elastic push rod to extend out.

[0020] Furthermore, the transmission assembly includes:

[0021] An oil storage shell is fixedly connected to the input end of the feed pump body, a liquid bag is arranged inside the oil storage shell, and the liquid bag of the oil storage shell is squeezed and matched with the trigger rod;

[0022] A fixing ring, the feed pump body is fixedly connected with a second connecting piece, and the fixing ring is fixedly connected to the second connecting piece of the feed pump body;

[0023] The inner ring is sealingly rotatably connected to the fixed ring, and the two cooperate to form a closed cavity, the oil storage shell is connected to the closed cavity, and the fixed part of the first elastic push rod is fixedly connected to the closed cavity and is connected by a connecting pipe;

[0024] The first locking assembly is arranged on the rack frame and is used to maintain the extended state of the telescopic end of the first elastic push rod.

[0025] Furthermore, the first locking assembly includes:

[0026] A first limiting shaft is slidably connected to the rack frame, the adjusting housing is fixedly connected to a sawtooth rod via a first connecting member, and the first limiting shaft is limitedly matched with the sawtooth rod;

[0027] The first elastic element is arranged between the rack frame and the first limiting shaft.

[0028] Furthermore, it also includes:

[0029] A second elastic push rod is fixedly connected to the second connecting piece of the material storage part of the material feeding pump body, the fixing part of the second elastic push rod is fixedly connected and communicated with the connecting pipe, the telescopic end of the second elastic push rod is limitedly slidably connected with the spline shaft, the spline shaft is spline-connected to the output shaft of the servo motor, and the spline shaft is spline-connected to the docking ring;

[0030] The second locking assembly is arranged on the telescopic end of the second elastic push rod and is used for maintaining the separation state of the spline shaft and the docking ring.

[0031] Furthermore, the elastic force of the first elastic push rod is smaller than the elastic force of the second elastic push rod.

[0032] Furthermore, the second locking assembly includes:

[0033] A clamping block, fixedly connected to the telescopic end of the second elastic push rod;

[0034] A second limiting shaft is slidably connected to the second connecting piece of the feed pump body, and the clamping block is limitedly matched with the second limiting shaft;

[0035] The second elastic element is arranged between the second limiting shaft and the second connecting piece of the feed pump body.

[0036] Furthermore, it also includes:

[0037] A rotating assembly is disposed in the adjusting shell and is used to drive the material in the adjusting shell to rotate. The rotating assembly includes:

[0038] An electric swivel, fixedly connected to the adjusting housing;

[0039] A plurality of rotating shafts are fixedly connected to the output end of the electric swivel, the rotating shafts are slidably connected to the piston shaft, and the piston shaft is rotatably connected to the telescopic end of the first elastic push rod;

[0040] The regulating component is arranged on the feeding pump body and is used for regulating the rotation frequency of the rotating shaft driven by the electric swivel.

[0041] Furthermore, the adjustment component includes:

[0042] A gear adjustment device, fixedly connected to the feed pump body, the gear adjustment device is electrically connected to the electric swivel;

[0043] The second gear is fixedly connected to the input end of the gear adjustment device, and the second gear is meshed with the rack.

[0044] The beneficial effects are: 1. When the clot is deposited between the screw and the bushing, the adjusting shell slides downward along the piston shaft, reducing the material entering the sealing chamber, reducing the contact area between the material and the screw and the bushing, reducing the degree of screw wear and the running load of the motor, improving the sealing degree of the screw to the bushing, and extending the service life of the motor.

[0045] 2. The piston shaft drives the rack to move downward synchronously, so that the valve reduces the injection aperture of the feed pipe, thereby reducing the injection speed in the material chamber. The injection speed of the feed pipe is consistent with the feeding speed of this device, thereby maintaining the material liquid level in the storage part of the feeding pump body.

[0046] 3. When the screw is stuck or the clots are deposited to a certain content, the spline shaft is separated from the docking ring, and the output shaft of the servo motor is idle, so that the screw in the feed pump body stops rotating, thereby reducing the wear of the screw and avoiding damage to the servo motor.

[0047] 4. Stir the deposited material in the regulating shell by rotating the shaft to make it flow. At the same time, adjust the rotation frequency of the shaft linearly according to the sliding amplitude of the piston shaft to prevent the material from being solidified in the regulating shell for a long time, so that the downward movement of the piston shaft cannot change the material liquid level in the storage part of the feed pump body. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0049] Figure 2 It is a three-dimensional structural schematic diagram of the rack rack and the first gear of the present invention;

[0050] Figure 3 It is a schematic diagram of the three-dimensional structure of the adjusting shell and the first elastic push rod of the present invention;

[0051] Figure 4 It is a schematic cross-sectional view of the three-dimensional structure of the regulating shell of the present invention;

[0052] Figure 5It is a three-dimensional structural schematic diagram of the spline shaft and the fixing ring of the present invention;

[0053] Figure 6 It is a schematic cross-sectional view of the three-dimensional structure of the fixing ring and the inner ring of the present invention;

[0054] Figure 7 It is a schematic diagram of the three-dimensional structure of the trigger rod and the oil storage shell of the present invention;

[0055] Figure 8 It is a schematic diagram of the three-dimensional structure of the second elastic push rod and the clamping block of the present invention;

[0056] Fig. 9 It is a schematic diagram of the three-dimensional structure of the electric rotating ring and the rotating shaft of the present invention.

[0057] In the accompanying drawings: 1-feeding pump body, 2-feeding pipe, 3-servo motor, 4-adjusting shell, 5-piston shaft, 6-first elastic push rod, 7-valve, 8-rack rack, 9-first gear, 201-spline shaft, 202-docking ring, 203-trigger rod, 204-oil storage shell, 205-fixing ring, 206-inner ring, 207-connecting pipe, 301-first limiting shaft, 302-sawtooth rod, 303-first elastic element, 401-second elastic push rod, 402-block, 403-second limiting shaft, 404-second elastic element, 501-electric swivel, 502-rotating shaft, 503-gear adjustment device, 504-second gear. DETAILED DESCRIPTION

[0058] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0059] Some sticky substances will show colloidal characteristics in a humid environment, causing the materials to attract each other and form clots. When the screw pump is used to transport such materials in a humid environment, external moisture can easily penetrate into the interior of the sticky substance, causing the sticky substance to combine with water to form clots. These clots may accumulate between the screw and the pump body lining during the conveying process and are difficult to remove, which not only increases the resistance to conveying materials, but also aggravates the wear of the screw and increases the load on the motor. As a result, the fit between the screw and the lining may become loose, and the motor may be overloaded for a long time, eventually leading to damage.

[0060] A screw pump with a reinforced screw structure, such as Figure 1-Figure 4As shown, it includes: a feeding pump body 1, which is composed of a feeding part and a storage part; a feeding pipe 2, which is fixedly connected and communicated with the storage part of the feeding pump body 1; a servo motor 3, which is fixedly connected to the feeding pump body 1 and is used to drive the feeding pump body 1 to feed; an adjusting shell 4, which is fixedly connected and communicated with the storage part of the feeding pump body 1, and the adjusting shell 4 is sealingly and slidably connected with a piston shaft 5; a first elastic push rod 6, the outside of the adjusting shell 4 is fixedly connected with a first connecting piece, the first elastic push rod 6 is fixedly connected to the first connecting piece on the adjusting shell 4, and the telescopic end of the first elastic push rod 6 is fixedly connected to the piston shaft 5; a material maintaining component, which is arranged on the feeding pipe 2, and is used to maintain the content of the material in the storage part of the feeding pump body 1; a load detection component, which is arranged at the power input end of the feeding pump body 1, and is used to detect the load of the servo motor 3 during the operation.

[0061] In the above scheme, the feed pump body 1 is composed of a storage part and a feed part, wherein the feed part is composed of a bushing, a screw and a transmission mechanism of the screw, and the feed pipe 2 is located above the storage part of the feed pump body 1, and is used to inject material into the storage part of the feed pump body 1. The adjusting shell 4 is located below the storage part of the feed pump body 1, so that the material in the storage part of the feed pump body 1 can enter the adjusting shell 4 under gravity, and the piston shaft 5 slides downward along the adjusting shell 4, thereby changing the material entering each sealing cavity, reducing the contact area between the material and the screw and the bushing, reducing the wear degree of the screw and the running load of the motor, improving the sealing degree of the screw to the bushing, and extending the service life of the motor. The fixed part of the first elastic push rod 6 is filled with hydraulic oil, which is used to drive the piston shaft 5 to slide downward along the adjusting shell 4, and the telescopic end of the first elastic push rod 6 is in a non-extended state.

[0062] Specifically, Figure 2-Figure 4 As shown, the material maintenance component includes: a valve 7, which is arranged on the feed pipe 2 and is used to adjust the material injection speed in the material storage part of the feed pump body 1; a rack rack 8, which is fixedly connected to the telescopic end of the first elastic push rod 6, and the handle of the valve 7 is fixedly connected to the first gear 9, and the rack rack 8 is meshed with the first gear 9.

[0063] In the above scheme, the valve 7 is a gate valve or a butterfly valve, which has a simple structure and is easy to clean and maintain. The meshing position of the rack 8 and the first gear 9 is located at the lower side of its teeth, so that the rack 8 has enough tooth length to drive the first gear 9 to rotate. A shielding shell (such as Figure 1 As shown), and the shielding shell passes through the feed pipe 2, which is used to block external impurities from entering the meshing area between the rack rack 8 and the first gear 9, causing the two to get stuck. The rack rack 8 and the piston shaft 5 move downward synchronously, so that the rack rack 8 adjusts the opening degree of the valve 7 through the first gear 9, thereby changing the injection speed of the feed pipe 2, so that the injection speed of the feed pipe 2 is consistent with the feeding speed of the device, thereby maintaining the liquid level of the material in the storage part of the feeding pump body 1.

[0064] Specifically, Figure 5-Figure 7 As shown, the load detection component includes: a spline shaft 201, which is arranged on the output shaft of the servo motor 3; a docking ring 202, which is arranged on the spline shaft 201, the docking ring 202 is rotatably connected to the power input end of the feed pump body 1, and the spline shaft 201 and the docking ring 202 are spline-connected; a trigger rod 203, which is fixedly connected to the docking ring 202; a transmission component, which is arranged on the input end of the feed pump body 1, and is used to drive the telescopic end of the first elastic push rod 6 to extend.

[0065] In the above scheme, the output shaft of the servo motor 3 drives the input end of the feed pump body 1 to rotate through the spline shaft 201, the docking ring 202 and the trigger rod 203. The output shaft, spline shaft 201 and docking ring 202 of the servo motor 3 are all made of high-strength steel to improve their own structural strength, so as to avoid the output shaft of the servo motor 3 driving the docking ring 202 to rotate for a long time through the spline shaft 201, and the splines on the outside of the output shaft of the servo motor 3 and the spline shaft 201 and the splines inside the docking ring 202 are broken. The screw in the feed part of the feed pump body 1 is rotated to transport the material, and the relative sliding of the trigger rod 203 and the docking ring 202 detects the load of the servo motor 3.

[0066] Specifically, Figure 5-Figure 7 As shown, the transmission assembly includes: an oil storage shell 204, which is fixedly connected to the input end of the feed pump body 1, and a liquid bag is arranged inside the oil storage shell 204, and the liquid bag of the oil storage shell 204 is squeezed and matched with the trigger rod 203; a fixed ring 205, to which the feed pump body 1 is fixedly connected with a second connecting piece, and the fixed ring 205 is fixedly connected to the second connecting piece of the feed pump body 1; an inner ring 206, which is sealingly rotatably connected to the fixed ring 205, and the two cooperate to form a closed cavity, the oil storage shell 204 is connected to the closed cavity, the fixed part of the first elastic push rod 6 is fixedly connected to the closed cavity and is connected by a connecting pipe 207; a first locking assembly, which is arranged on the rack frame 8, and is used to maintain the extended state of the telescopic end of the first elastic push rod 6.

[0067] In the above scheme, the liquid bag of the oil storage shell 204 is filled with hydraulic oil, and the closed cavity formed by the fixed ring 205 and the inner ring 206 and the connecting pipe 207 are filled with hydraulic oil. The connecting point between the connecting pipe 207 and the fixed part of the first elastic push rod 6 is located on the side away from its telescopic end, so that the trigger rod 203 squeezes the liquid bag in the oil storage shell 204. The liquid bag is squeezed to press the internal hydraulic oil into the closed cavity, and then enters the fixed part of the first elastic push rod 6 along the closed cavity and the connecting pipe 207 in turn, so that the hydraulic oil in the fixed part of the first elastic push rod 6 pushes its telescopic end to slide downward.

[0068] Specifically, Figure 3 and Figure 4As shown, the first locking assembly includes: a first limiting shaft 301, which is slidably connected to the rack frame 8, the adjusting shell 4 is fixedly connected to the sawtooth rod 302 through a first connecting piece, and the first limiting shaft 301 and the sawtooth rod 302 are limitedly matched; a first elastic element 303, which is arranged between the rack frame 8 and the first limiting shaft 301.

[0069] In the above scheme, the first limiting shaft 301 has a wedge-shaped structure, the serrated rod 302 is composed of a plurality of wedge-shaped blocks, and the wedge-shaped blocks on the first limiting shaft 301 and the wedge-shaped blocks on the serrated rod 302 can cooperate with each other, and the first elastic element 303 is a spring, which is used to drive the first limiting shaft 301 to reset, so that the serrated rod 302 can unidirectionally limit the rack rack 8 through the first limiting shaft 301, so as to avoid the servo motor 3 load recovery after the liquid level of the feed pump body 1 is lowered, resulting in the retractable end of the first elastic push rod 6 being reset, causing the liquid level of the material in the storage chamber of the feed pump body 1 to be in a fluctuating state.

[0070] When the staff needs to convey viscous materials through this device, the material enters the storage chamber of the feeding pump body 1 along the feed pipe 2 until the material is stored in the storage chamber of the feeding pump body 1 to the required content, and then the servo motor 3 is turned on, and the output shaft of the servo motor 3 drives the spline shaft 201 to rotate, and the spline shaft 201 drives the docking ring 202 to rotate synchronously, so that the docking ring 202 drives the trigger rod 203 to rotate, and the trigger rod 203 drives the input end of the feeding pump body 1 to rotate through the oil storage shell 204, and the input end of the feeding pump body 1 starts to rotate and drives the internal screw to start rotating, and then starts to convey the material, and this is done until the material conveying is completed.

[0071] Since the material will form clots when combined with water, during the transportation of the device, the clots will remain between the screw and the bushing and cannot be discharged, thereby increasing the conveying resistance between the screw and the bushing, which not only increases the wear of the screw and the bushing, but also increases the load of the servo motor 3. At this time, due to the increase in the load of the servo motor 3, the output shaft of the servo motor 3 drives the trigger rod 203 to slide relatively along the input end of the feed pump body 1 through the spline shaft 201, so that the trigger rod 203 squeezes the hydraulic oil in the oil storage shell 204. At this time, the hydraulic oil in the oil storage shell 204 is squeezed into the closed cavity formed by the fixed ring 205 and the inner ring 206, and the hydraulic oil in the closed cavity is discharged along the connecting Tube 207 enters the fixed part of the first elastic push rod 6. At this time, the hydraulic oil in the fixed part of the first elastic push rod 6 pushes its telescopic end to slide downward, so that the telescopic end of the first elastic push rod 6 drives the piston shaft 5 to slide downward along the adjusting shell 4. At this time, the material located in the material storage part of the feeding pump body 1 will enter the adjusting shell 4, so that the material liquid level in the material storage part of the feeding pump body 1 is reduced, thereby reducing the material content entering the sealing cavity between the screw and the bushing of the feeding pump body 1, reducing the contact area between the material and the screw and the bushing, thereby reducing the conveying resistance of the device to the material, reducing the wear degree of the screw and the running load of the motor, improving the sealing degree of the screw to the bushing, and extending the service life of the motor.

[0072] When the piston shaft 5 slides downward along the adjusting shell 4, the telescopic end of the first elastic push rod 6 drives the rack 8 to move downward synchronously, so that the rack 8 drives the first gear 9 to rotate, and the first gear 9 drives the input end of the valve 7 to rotate synchronously, so that the valve 7 reduces the injection aperture of the feed pipe 2, thereby reducing the injection speed in the material cavity, so that the injection speed of the feed pipe 2 is consistent with the feeding speed of the device, thereby maintaining the material liquid level in the storage part of the feeding pump body 1, avoiding the injection speed of the feed pipe 2 being greater than the feeding speed of the device, and restoring the material liquid level in the storage part of the feeding pump body 1.

[0073] When the telescopic end of the first elastic push rod 6 moves downward, the telescopic end of the first elastic push rod 6 drives the rack frame 8 to move downward synchronously. At this time, the rack frame 8 drives the first limiting shaft 301 thereon to move downward synchronously. At this time, the sawtooth rod 302 squeezes the first limiting shaft 301, so that the first limiting shaft 301 slides along the rack frame 8 under the squeezing force. At this time, the first elastic element 303 is compressed until the rack frame 8 stops moving. The first elastic element 303 is reset and drives the first limiting shaft 301 to reset synchronously, so that the first limiting shaft 301 and the sawtooth rod 302 contact and limit each other. The rack frame 8 is locked by the cooperation of the first limiting shaft 301 and the sawtooth rod 302, and then the telescopic end of the first elastic push rod 6 is locked to prevent the servo motor 3 from recovering its load after the liquid level of the feeding pump body 1 is lowered, resulting in the telescopic end of the first elastic push rod 6 being reset, causing the liquid level of the material in the storage chamber of the feeding pump body 1 to be in a fluctuating state.

[0074] In the above embodiment, the connection relationship between the spline shaft 201 and the output shaft of the servo motor 3 is a fixed connection, and the connection relationship between the spline shaft 201 and the docking ring 202 is a fixed connection, but it is limited to the above embodiment. In other subsequent embodiments, the connection relationship between the spline shaft 201 and the output shaft of the servo motor 3 is a spline connection, and the connection relationship between the spline shaft 201 and the docking ring 202 is a spline connection. Please refer to the specific description in the subsequent embodiments.

[0075] In a further embodiment, Figure 5 and Figure 8 As shown, it also includes: a second elastic push rod 401, which is fixedly connected to the second connecting piece of the material storage part of the feeding pump body 1, the fixed part of the second elastic push rod 401 is fixedly connected and communicated with the connecting pipe 207, the telescopic end of the second elastic push rod 401 is limitedly slidably connected with the spline shaft 201, the spline shaft 201 and the output shaft of the servo motor 3 are splined, and the spline shaft 201 and the docking ring 202 are splined; a second locking assembly is arranged on the telescopic end of the second elastic push rod 401, and is used to maintain the separation state of the spline shaft 201 and the docking ring 202; the elastic force of the first elastic push rod 6 is less than the elastic force of the second elastic push rod 401.

[0076] In the above scheme, the fixed part of the second elastic push rod 401 is filled with hydraulic oil, the telescopic end of the second elastic push rod 401 is initially in an extended state, and the connection between the connecting pipe 207 and the fixed part of the second elastic push rod 401 is located on the side close to the telescopic end. When the hydraulic oil in the connecting pipe 207 enters the fixed part of the second elastic push rod 401, the telescopic end of the second elastic push rod 401 slides into its fixed part, and the telescopic end of the second elastic push rod 401 drives the spline shaft 201 and the docking ring 202 to separate, so that the output shaft of the servo motor 3 is idle, that is, the feeding The screw in the pump body 1 stops rotating, thereby reducing the degree of wear of the screw and avoiding damage to the servo motor. The elastic force of the first elastic push rod 6 is smaller than the elastic force of the second elastic push rod 401, so that the hydraulic oil in the connecting tube 207 preferentially enters the fixed part of the first elastic push rod 6. When the hydraulic oil fills the fixed part of the first elastic push rod 6, the hydraulic oil in the connecting tube 207 enters the fixed part of the second elastic push rod 401, and the hydraulic oil content in the liquid bag of the oil storage shell 204 is sufficient to fill the fixed part of the first elastic push rod 6 and the fixed part of the second elastic push rod 401.

[0077] Specifically, Figure 8 As shown, the second locking assembly includes: a block 402, fixedly connected to the telescopic end of the second elastic push rod 401; a second limiting shaft 403, slidably connected to the second connecting piece of the feed pump body 1, and the block 402 and the second limiting shaft 403 are limitedly matched; a second elastic element 404, arranged between the second limiting shaft 403 and the second connecting piece.

[0078] In the above scheme, the blocking block 402 has a wedge-shaped structure, the second limiting shaft 403 has a wedge-shaped structure, and the wedge-shaped surfaces of the two cooperate with each other. The second elastic element 404 is a tension spring, and the second elastic element 404 is used to drive the second limiting shaft 403 to reset. The blocking block 402 cooperates with the second limiting shaft 403 to prevent the telescopic end of the second elastic push rod 401 from driving the spline shaft 201 and the docking ring 202 to dock.

[0079] In the process of conveying materials by the device, as the clots gradually settle between the screw and the bushing, the load of the motor will increase continuously, that is, the telescopic end of the first elastic push rod 6 will move downward continuously until the liquid level in the feeding pump body 1 is lower than the set value, that is, after the telescopic end of the first elastic push rod 6 slides to the limit state, when the load of the servo motor 3 increases again (the gradual deposition of clots or the solid particles in the material directly cause the screw to get stuck), the trigger rod 203 pushes the hydraulic oil in the oil storage shell 204 into the fixed ring 205 and the inner ring 206 formed by the cooperation The hydraulic oil in the closed cavity enters the fixed part of the second elastic push rod 401 along the connecting pipe 207, and the hydraulic oil in the fixed part of the second elastic push rod 401 drives its telescopic end to move, so that the telescopic end of the second elastic push rod 401 drives the spline shaft 201 to slide inward along the output shaft of the servo motor 3 until the spline shaft 201 is separated from the docking ring 202, so that the output shaft of the servo motor 3 is idle, and the screw in the feeding pump body 1 stops rotating, thereby reducing the wear degree of the screw and the damage degree of the servo motor 3, and extending the service life of both.

[0080] When the telescopic end of the second elastic push rod 401 drives the spline shaft 201 to separate from the docking ring 202, the telescopic end of the second elastic push rod 401 drives the block 402 to move synchronously, and the block 402 squeezes the second limiting shaft 403, causing the second limiting shaft 403 to slide along the second connecting piece, and the second elastic element 404 is compressed. When the block 402 bypasses the second limiting shaft 403, the spline shaft 201 is separated from the docking ring 202. At this time, the second elastic element 404 is reset and drives the second limiting shaft 403 to reset. At this time, the second limiting shaft 403 limits the block 402 to prevent the telescopic end of the second elastic push rod 401 from driving the spline shaft 201 to dock with the docking ring 202 again. Then the staff turns off the servo motor 3, disassembles the device, cleans the clots or impurities deposited inside, and then reassembles the device to the initial state to continue the material transportation.

[0081] In the above two embodiments, the connection relationship between the piston shaft 5 and the telescopic end of the first elastic push rod 6 is a fixed connection, but it is limited to the above two embodiments. In other subsequent embodiments, the connection relationship between the piston shaft 5 and the telescopic end of the first elastic push rod 6 is a rotational connection. Please refer to the specific description in the subsequent embodiments.

[0082] In a further embodiment, Figure 2 , Figure 3 and Fig. 9 As shown, it also includes: a rotating component, which is arranged in the adjusting shell 4 and is used to drive the material in the adjusting shell 4 to rotate, and the rotating component includes: an electric swivel 501, which is fixedly connected to the adjusting shell 4; a rotating shaft 502, which has a plurality of parts and is fixedly connected to the output end of the electric swivel 501, and the rotating shaft 502 is slidably connected to the piston shaft 5, and the piston shaft 5 is rotatably connected to the telescopic end of the first elastic push rod 6; an adjusting component, which is arranged on the feed pump body 1 and is used to adjust the rotation frequency of the electric swivel 501 driving the rotating shaft 502.

[0083] In the above scheme, the number of rotating shafts 502 can be adjusted according to the viscosity of the conveyed material, and when the material solidifies, the rotating shaft 502 can be externally connected to a heating device. The rotating shaft 502 is made of a heat-conducting material, so that the rotating shaft 502 heats the material deposited in the adjusting shell 4 to prevent it from solidifying. The electric rotating ring 501 periodically drives the rotating shaft 502 to rotate. The rotation mode can be unidirectional rotation (clockwise or counterclockwise rotation) and alternating rotation (clockwise and counterclockwise rotation). The rotation duration and rotation speed are adjusted accordingly according to the viscosity of the material, stirring the material deposited in the adjusting shell 4 to make it flow, thereby avoiding long-term accumulation in the adjusting shell and solidification.

[0084] Specifically, Figure 2 and Figure 3 As shown, the adjustment component includes: a gear adjustment device 503, fixedly connected to the feed pump body 1, and the gear adjustment device 503 is electrically connected to the electric swivel 501; a second gear 504, fixedly connected to the input end of the gear adjustment device 503, and the second gear 504 is meshed with the rack 8.

[0085] In the above scheme, the rack rack 8 has two groups of teeth that are symmetrically distributed, one group of teeth is meshed with the first gear 9, and the other group of teeth is meshed with the second gear 504. The gear adjustment device 503 is used to adjust the periodic interval of the electric rotating ring 501 to drive the rotating shaft 502 to rotate. When the amount of material deposited in the adjustment shell 4 increases, the rotation interval of the rotating shaft 502 is shortened to further reduce the probability of material solidification.

[0086] When the material is conveyed by the feeding pump body 1, the electric rotating ring 501 will be opened intermittently, and the output end of the electric rotating ring 501 drives the several rotating shafts 502 thereon to rotate, so that the rotating shafts 502 rotate and stir the material in the adjusting shell 4 to make it flow, so as to avoid long-term accumulation in the adjusting shell 4 and solidification, causing the piston shaft 5 to move downward, and unable to change the material liquid level in the material storage part of the feeding pump body 1. At the same time, when the telescopic end of the first elastic push rod 6 gradually drives the piston shaft 5 to move downward, the rack rack 8 moves downward synchronously to drive the second gear 504 to rotate. The rotation of the second gear 504 drives the input end of the gear adjustment device 503 to rotate, so that the gear adjustment device 503 adjusts the rotation interval of the electric rotating ring 501. Since the longer the distance the piston shaft 5 moves downward, the more material is deposited in the adjusting shell 4, and the probability of its solidification gradually increases, by adjusting the rotation interval of the rotating shaft 502, the probability of its solidification is reduced, ensuring that the material liquid level in the feeding pump body 1 can be adjusted down on time.

[0087] What has been described above are only preferred specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, can make equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A screw pump with a reinforced screw structure, Its characteristics include: The material conveying pump body (1) is composed of a material conveying part and a material storage part; A feed pipe (2) fixedly connected to and in communication with the material storage portion of the feed pump body (1); A servo motor (3) is fixedly connected to the material delivery pump body (1) and is used to drive the material delivery pump body (1) to deliver material; An adjusting shell (4) is fixedly connected to and communicated with the material storage portion of the material delivery pump body (1); the adjusting shell (4) is sealingly and slidably connected to a piston shaft (5); a first elastic push rod (6), the outside of the adjusting shell (4) being fixedly connected to a first connecting piece, the first elastic push rod (6) being fixedly connected to the first connecting piece of the adjusting shell (4), and the telescopic end of the first elastic push rod (6) being fixedly connected to the piston shaft (5); A material maintenance component, arranged on the feed pipe (2), and used for maintaining the content of the material in the material storage portion of the feed pump body (1); A load detection component, arranged at the power input end of the feed pump body (1), and used for detecting the load of the servo motor (3) during operation; The material maintenance component includes: A valve (7) is arranged on the feed pipe (2) and is used to adjust the injection speed of the material in the material storage part of the feed pump body (1); A rack frame (8) is fixedly connected to the telescopic end of the first elastic push rod (6); the handle of the valve (7) is fixedly connected to a first gear (9); the rack frame (8) is meshed with the first gear (9); The load detection component comprises: A spline shaft (201) is arranged on an output shaft of the servo motor (3); A docking ring (202) is arranged on the spline shaft (201), the docking ring (202) is rotatably connected to the power input end of the feed pump body (1), and the spline shaft (201) and the docking ring (202) are spline-connected; A trigger rod (203) fixedly connected to the docking ring (202); A transmission assembly, arranged on the input end of the feed pump body (1), and used for driving the telescopic end of the first elastic push rod (6) to extend out; The transmission assembly comprises: An oil storage shell (204) is fixedly connected to the input end of the feed pump body (1), a liquid bag is arranged inside the oil storage shell (204), and the liquid bag of the oil storage shell (204) is squeezed and matched with the trigger rod (203); A fixing ring (205), the feed pump body (1) being fixedly connected to a second connecting piece, the fixing ring (205) being fixedly connected to the second connecting piece of the feed pump body (1); The inner ring (206) is sealingly rotatably connected to the fixing ring (205), and the two cooperate to form a closed cavity, the oil storage shell (204) is connected to the closed cavity, and the fixing portion of the first elastic push rod (6) is fixedly connected to the closed cavity and is connected via a connecting pipe (207); A first locking assembly, arranged on the rack frame (8), and used to maintain the extended state of the telescopic end of the first elastic push rod (6); Also included are: A second elastic push rod (401) is fixedly connected to a second connecting piece of the material storage portion of the material delivery pump body (1); the fixed portion of the second elastic push rod (401) is fixedly connected to and communicates with the connecting pipe (207); the telescopic end of the second elastic push rod (401) is limitedly slidably connected to the spline shaft (201); the spline shaft (201) is spline-connected to the output shaft of the servo motor (3); and the spline shaft (201) is spline-connected to the docking ring (202); A second locking assembly is arranged on the telescopic end of the second elastic push rod (401) and is used to maintain the separation state of the spline shaft (201) and the docking ring (202).

2. A screw pump with a reinforced screw structure according to claim 1, characterized in that: The first locking assembly comprises: A first limiting shaft (301) is slidably connected to the rack frame (8); the adjusting housing (4) is fixedly connected to a sawtooth rod (302) via a first connecting member; the first limiting shaft (301) and the sawtooth rod (302) are in limiting cooperation; The first elastic element (303) is arranged between the rack frame (8) and the first limiting shaft (301).

3. A screw pump with a reinforced screw structure according to claim 1, characterized in that: The elastic force of the first elastic push rod (6) is smaller than the elastic force of the second elastic push rod (401).

4. A screw pump with a reinforced screw structure according to claim 3, characterized in that: The second locking assembly comprises: A clamping block (402) fixedly connected to the telescopic end of the second elastic push rod (401); A second limiting shaft (403) is slidably connected to a second connecting piece of the feed pump body (1), and the clamping block (402) is in limiting cooperation with the second limiting shaft (403); The second elastic element (404) is arranged between the second limiting shaft (403) and the second connecting piece of the material conveying pump body (1).

5. A screw pump with a reinforced screw structure according to claim 4, characterized in that: Also included are: A rotating assembly is arranged in the adjusting shell (4) and is used to drive the material in the adjusting shell (4) to rotate. The rotating assembly comprises: An electric swivel (501) fixedly connected to the adjustment housing (4); A plurality of rotating shafts (502) are fixedly connected to the output end of the electric rotating ring (501); the rotating shaft (502) is slidably connected to the piston shaft (5); and the piston shaft (5) is rotatably connected to the telescopic end of the first elastic push rod (6); An adjustment component is arranged on the feed pump body (1) and is used to adjust the rotation frequency of the electric rotating ring (501) driving the rotating shaft (502).

6. A screw pump with a reinforced screw structure according to claim 5, characterized in that: The adjustment component includes: A gear adjustment device (503) is fixedly connected to the feed pump body (1), and the gear adjustment device (503) is electrically connected to the electric swivel (501); The second gear (504) is fixedly connected to the input end of the gear adjustment device (503), and the second gear (504) is meshed with the rack (8).

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