Three-screw pump for quantitative anti-blocking conveying of materials

Abstract

The invention relates to the technical field of three-screw pumps, and provides a material quantitative anti-blocking conveying three-screw pump which comprises a pump body, a feeding pipe, a material guiding assembly, a spherical shell, a separating and filtering assembly, a driving module, a moving part, a transmission part and a discharging pipe. The material guiding assembly comprises a ball core, a material guiding channel, a fixing shaft and a first annular guide rail, the material guiding channel is formed in the surface of the ball core, the separating and filtering assembly comprises a conical shell and a filter element, a first gear ring is fixedly connected to the outer side of the conical shell, the spherical covers are distributed between the first pipe body and the second pipe body, and conical holes are formed in the surfaces of the spherical covers. The moving part is slidably connected between the first annular guide rail and the conical shell, the transmission part is in transmission connection between the driving module and the first gear ring, the fixed shaft is in transmission connection with the driving module, and the device has the characteristics that the filter element is convenient to disassemble, assemble and replace, and particulate impurities on the surface of the filter element are automatically cleaned before the filter element is replaced.

Description

Technical Field

[0001] The invention relates to the technical field of three-screw pumps, and in particular to a three-screw pump for quantitative anti-blocking transportation of materials. Background Art

[0002] The three-screw pump is a special type of positive displacement pump, mainly used to transport high-viscosity, low-viscosity liquids and fluids containing solid particles. It uses the interaction of three screws to produce the effects of sucking, compressing and discharging fluids. The three-screw pump consists of three screws, usually including a main screw and two auxiliary screws. When the main screw rotates, the auxiliary screws also rotate to form a continuous spiral cavity. The volume of this cavity changes continuously, generating negative pressure, so that the liquid is sucked in through the inlet. The liquid is gradually compressed during the rotation of the screw, the volume of the cavity decreases, and the liquid is pushed forward to flow. When the liquid reaches the outlet of the pump, it forms a high-pressure state and is discharged.

[0003] After searching, the existing announcement number CN116292273B discloses an anti-clogging three-screw pump mechanism, which includes a pump body, a filtering mechanism, a cleaning mechanism and a driving mechanism. The pump body is provided with a water inlet pipe; the filtering mechanism includes a barrel connected between the first tube body and the second tube body, and the barrel body is provided with a filter cavity evenly distributed along its circumference. The filtering mechanism also includes a filter element detachably connected to the filter cavity, and each of the filter elements is provided with a sensing element; the cleaning mechanism is rotatably connected to the barrel body through a rotating shaft; the driving mechanism includes a driving shaft, a base provided at the end of the driving shaft, a pin protruding from the base away from the driving shaft, and a driven block coaxially arranged with the barrel body and sleeved on the outer periphery of the barrel body. The above technical solution is to control the driving mechanism to rotate the filtering mechanism through the sensing element, thereby replacing the filter element that filters the material transported by the first tube body with the next one.

[0004] Although the above anti-clogging three-screw pump can automatically replace the filter element, it still has the following defects when used: on the one hand, before replacing the filter element blocked by particulate impurities, the particulate impurities in the filter element cannot be automatically cleaned out in advance; on the other hand, when disassembling the filter element, the filter element cannot be automatically extended out of the maintenance port, which makes it inconvenient to use tools to disassemble the filter element. Summary of the invention

[0005] The object of the present invention is to provide a three-screw pump for quantitative anti-blocking transportation of materials, aiming to solve the problems existing in the existing anti-blocking three-screw pump.

[0006] To achieve the above object, the present invention provides the following technical solution: a three-screw pump for quantitative material blocking prevention transportation, comprising a pump body and a discharge pipe, wherein the pump body is fixedly connected to the discharge pipe, and further comprising: A feed pipe, the feed pipe comprising a first pipe body, a spherical cover and a second pipe body, the second pipe body is fixedly connected to the pump body, and the spherical cover is distributed between the first pipe body and the second pipe body; A material guide assembly, the material guide assembly comprising a ball core, a material guide channel, a fixed shaft and a first annular guide rail, the fixed shaft and the first annular guide rail are both fixedly connected to the ball core, and a material guide channel is provided on the surface of the ball core; A spherical shell distributed between the spherical cover and the spherical core, wherein the surface of the spherical cover is provided with a conical hole, and the inner side of the conical hole is provided with a slag drop opening; A separation filter assembly, the separation filter assembly comprising a conical housing and a filter element, the conical housing is located in the conical hole, the filter element is fixedly connected in the conical housing, and a first gear ring is fixedly connected to the outer side of the conical housing; A driving module, wherein the driving module is connected to one side of the spherical shell, and the fixed shaft is drivingly connected to the driving module; A moving part penetrating the spherical shell, wherein the moving part is slidably connected between the first annular guide rail and the conical shell; A transmission part connected to the ball shell, wherein the transmission part is transmission-connected between the drive module and the first gear ring.

[0007] As a further solution of the present invention, the moving part includes a second annular guide rail, a sliding rod, a slider, a fixed ring and a second return spring. The sliding rod is fixedly connected between the slider and the second annular guide rail, a rotating ring is fixedly connected to the outer side of the conical shell, and the rotating ring is rotatably connected in the second annular guide rail. The slider is slidably connected to the inner side of the first annular guide rail, the fixed ring is fixedly connected to the sliding rod, the second return spring is movably sleeved on the surface of the sliding rod, and one end of the second return spring is connected to the fixed ring.

[0008] As a further solution of the present invention, the number of the conical holes is six, and the six conical holes are symmetrically distributed about the center of the spherical shell. Two of the conical holes distributed axially along the fixed axis are fixedly connected to a fixing frame, and the fixing frame is fixedly connected to a limiting frame and a ratchet ring. The sliding rod passes through the fixing frame, and the other end of the second return spring is connected to the fixing frame.

[0009] As a further solution of the present invention, a protrusion is provided on the inner side of the first annular guide rail, and two of the protrusions are provided along the direction of the material guiding channel, and the direction of the material guiding channel is consistent with the direction of the first tube body and the second tube body.

[0010] As a further solution of the present invention, the transmission part includes a second gear ring, a driven gear, a transmission rod and a transmission gear. The second gear ring is movably connected in a limit frame, the driven gear and the transmission gear are both fixedly connected to the transmission rod, the transmission rod is connected to a fixed frame, the drive module is transmission connected to the inner side of the second gear ring, the outer side of the second gear ring is transmission connected to the driven gear, and the first gear ring is transmission connected to the transmission gear.

[0011] As a further solution of the present invention, the material guide assembly also includes a toothed disc and a limit disc, both of which are fixedly connected to the fixed shaft, the driving module is fixedly connected to the toothed disc, a pawl is provided on the surface of the limit disc, and the ratchet ring is meshed with the pawl.

[0012] As a further solution of the present invention, the driving module includes a driving motor, a driving shaft, a driving gear, an electromagnet, a first return spring, a limit end and a bracket. The driving motor and the bracket are fixedly connected to the fixed frame, the driving motor is connected to the driving shaft, and the surface and end of the driving shaft are respectively provided with limit ribs and a limit end. The driving gear is slidably connected to the driving shaft and the surface of the limit rib, and the surfaces of the bracket and the driving gear are respectively inlaid with electromagnets and magnetic rings. The first return spring is connected between the driving gear and the bracket, and the second gear ring and the gear disk are both transmission connected to the driving gear.

[0013] As a further solution of the present invention, a maintenance port is provided at a position of the spherical cover corresponding to the moving part, a sealing cover is threadedly connected to the maintenance port, a retaining ring is provided at a position of the inner wall of the spherical cover parallel to the fixed axis, a slag discharge pipe is fixedly connected to the retaining ring.

[0014] As a further solution of the present invention, the inner walls of the four conical holes symmetrically distributed about the fixed axis are each provided with a first sealing ring and a second sealing ring, and the first sealing ring and the second sealing ring are both in contact with the conical shell.

[0015] As a further solution of the present invention, a plurality of slag passing openings are arranged on the surface of the conical shell.

[0016] The beneficial effects of the present invention are that, on the basis of automatically replacing the filter element and aligning it with the material guide channel, it is also possible to control the movement and rotation of the filter element with particulate impurities adhered to it. On the one hand, it is convenient to use tools to disassemble and assemble the filter element that is moved out of the tapered hole for a certain distance. On the other hand, the centrifugal force generated by the rotating filter element can automatically fall off the particulate impurities attached to the surface of the filter element. The fallen particulate impurities enter the residue outlet along the inner wall of the tapered hole and are discharged outwardly. It has the characteristics of easy disassembly and replacement of the filter element and automatic cleaning of particulate impurities on the surface of the filter element before replacing the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereogram of the present invention.

[0018] Figure 2 It is a three-dimensional diagram of a material guiding assembly according to an embodiment of the present invention.

[0019] Figure 3 It is a three-dimensional diagram of a spherical shell according to an embodiment of the present invention.

[0020] Figure 4 It is a cross-sectional view of the feed pipe, the material guide assembly and the spherical shell according to an embodiment of the present invention.

[0021] Figure 5 It is a planar cross-sectional view of the feed tube, the material guide assembly and the spherical shell according to an embodiment of the present invention.

[0022] Figure 6 It is a schematic diagram of disassembling the separation and filtration component according to an embodiment of the present invention.

[0023] Figure 7 Schematic diagram of the disassembly of the driving module according to an embodiment of the present invention.

[0024] Figure 8 It is a three-dimensional diagram of the moving part of an embodiment of the present invention.

[0025] Fig. 9 It is a three-dimensional diagram of the transmission part of an embodiment of the present invention.

[0026] Fig.10 It is a cross-sectional view of a feed pipe, a material guide assembly, a spherical shell, a separation and filtering assembly, a driving module, a moving part and a transmission part according to an embodiment of the present invention.

[0027] Fig.11 For the present invention Fig.10 A partial enlarged view of point a in the middle.

[0028] Fig.12 It is a first plane cross-sectional view of a feed pipe, a material guide assembly, a spherical shell, a separation and filtering assembly, a driving module, a moving part and a transmission part according to an embodiment of the present invention.

[0029] Fig.13 It is a second plane cross-sectional view of the feed pipe, material guide assembly, spherical shell, separation and filtering assembly, driving module, moving part and transmission part of an embodiment of the present invention.

[0030] Fig.14 For the present invention Fig.13 A partial enlarged view of point b in the middle.

[0031] Reference numerals: 1-pump body, 11-feeding pipe, 111-first pipe body, 112-spherical cover, 1121-slag discharge pipe, 1122-retaining ring, 1123-maintenance port, 113-second pipe body, 114-sealing cover, 12-discharge pipe; 2- material guide assembly, 21- ball core, 211- material guide channel, 22- fixed shaft, 23- first annular guide rail, 231- protrusion, 24- toothed disc, 25- limiting disc, 26- locking nut; 3-ball shell, 31-conical hole, 311-slag outlet, 312-first sealing ring, 313-second sealing ring, 32-fixed frame, 321-ratchet ring, 322-limiting frame; 4-separation filter assembly, 41-conical housing, 411-first gear ring, 412-rotating ring, 413-slag outlet, 42-filter element; 5-driving module, 51-driving motor, 52-driving shaft, 53-driving gear, 54-electromagnet, 55-first return spring, 56-limiting end, 57-bracket; 6-moving part, 61-second annular guide rail, 62-sliding rod, 63-sliding block, 64-fixing ring, 65-second return spring; 7-transmission part, 71-second gear ring, 72-driven gear, 73-transmission rod, 74-transmission gear. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0034] See also Figures 1 to 14 In one embodiment of the present invention, a three-screw pump for quantitative material blocking prevention transportation includes a pump body 1 and a discharge pipe 12, wherein the pump body 1 is fixedly connected to the discharge pipe 12, and further includes: A feed pipe 11, the feed pipe 11 comprises a first tube body 111, a spherical cover 112 and a second tube body 113, the second tube body 113 is fixedly connected to the pump body 1, and the spherical cover 112 is distributed between the first tube body 111 and the second tube body 113; A material guide assembly 2, the material guide assembly 2 comprises a ball core 21, a material guide channel 211, a fixed shaft 22 and a first annular guide rail 23, the fixed shaft 22 and the first annular guide rail 23 are both fixedly connected to the ball core 21, the surface of the ball core 21 is provided with a material guide channel 211, and locking nuts 26 are threadedly connected at both ends of the fixed shaft 22; A spherical shell 3 distributed between the spherical cover 112 and the spherical core 21, wherein a conical hole 31 is provided on the surface of the spherical cover 112, and a slag drop opening 311 is provided inside the conical hole 31; A separation filter assembly 4, the separation filter assembly 4 comprises a conical housing 41 and a filter element 42, the conical housing 41 is located in the conical hole 31, the filter element 42 is fixedly connected in the conical housing 41, and a first gear ring 411 is fixedly connected to the outer side of the conical housing 41; A driving module 5, wherein the driving module 5 is connected to one side of the spherical shell 3, and the fixed shaft 22 is in driving connection with the driving module 5; A moving portion 6 penetrating the spherical shell 3, wherein the moving portion 6 is slidably connected between the first annular guide rail 23 and the conical shell 41; The transmission part 7 connected to the ball shell 3 is transmission-connected between the driving module 5 and the first gear ring 411 .

[0035] See also Figure 1 and Fig.11 Furthermore, a maintenance port 1123 is provided at a position corresponding to the spherical cover 112 and the movable part 6, and a sealing cover 114 is threadedly connected to the maintenance port 1123. A retaining ring 1122 is provided at a position parallel to the fixed axis 22 on the inner wall of the spherical cover 112, and a slag discharge pipe 1121 is fixedly connected to the retaining ring 1122.

[0036] See also Figure 3 and Fig.14 Furthermore, the inner walls of the four conical holes 31 symmetrically distributed about the fixed shaft 22 are each provided with a first sealing ring 312 and a second sealing ring 313 , and the first sealing ring 312 and the second sealing ring 313 are both in contact with the conical shell 41 .

[0037] In the embodiment of the present invention, a plurality of slag outlets 413 are provided on the surface of the conical shell 41. The centrifugal force generated by the rotating conical shell 41 and the filter element 42 drives the particulate impurities attached to the surface of the filter element 42 to separate from the filter element 42, and enter the conical hole 31 through the slag outlet 413, and enter the bottom of the spherical cover 112 along the slag outlet 311 in the conical hole 31. The retaining ring 1122 is used to prevent the particulate impurities from contacting the fixed shaft 22 on the one hand, and to drive the particulate impurities into the slag discharge pipe 1121 and be discharged outward on the other hand.

[0038] See also Figure 8 , Fig.10 , Fig.11In one embodiment of the present invention, the moving part 6 includes a second annular guide rail 61, a sliding rod 62, a slider 63, a fixing ring 64 and a second return spring 65. The sliding rod 62 is fixedly connected between the slider 63 and the second annular guide rail 61. A rotating ring 412 is fixedly connected to the outer side of the conical shell 41. The rotating ring 412 is rotatably connected in the second annular guide rail 61. The slider 63 is slidably connected to the inner side of the first annular guide rail 23. The fixing ring 64 is fixedly connected to the sliding rod 62. The second return spring 65 is movably sleeved on the surface of the sliding rod 62. One end of the second return spring 65 is connected to the fixing ring 64.

[0039] See also Figure 2 , convex 3 and Fig.11 Furthermore, the number of the conical holes 31 is six, and the six conical holes 31 are symmetrically distributed about the center of the spherical shell 3. Two of the conical holes 31 axially distributed along the fixed axis 22 are fixedly connected to a fixing frame 32, and the fixing frame 32 is fixedly connected to a limiting frame 322 and a ratchet ring 321. The sliding rod 62 passes through the fixing frame 32, and the other end of the second return spring 65 is connected to the fixing frame 32.

[0040] See also Figure 2 , Fig.12 Furthermore, a protrusion 231 is provided on the inner side of the first annular guide rail 23 , and the two protrusions 231 are arranged along the direction of the material guiding channel 211 , and the direction of the material guiding channel 211 is consistent with the direction of the first tube body 111 and the second tube body 113 .

[0041] In the embodiment of the present invention, each group of moving parts 6 corresponds to a group of separation filter components 4. When a group of conical holes 31 of the spherical shell 3 are aligned with the material guide channel 211, the slider 63 corresponding to the group of conical holes 31 moves to the position of the protrusion 231. Since the protrusion 231 is facing the direction close to the axis of the fixed shaft 22, the protrusion 231 can limit the conical shell 41 and the filter element 42 through the slider 63, the slide rod 62, the second annular guide rail 61 and the rotating ring 412, so as to prevent the conical shell 41 and the filter element 42 from detaching from the conical hole 31. At this time, the conical shell 41 contacts the first sealing ring 312 and the second sealing ring 313 along the axis of the conical hole 31, and the first sealing ring 312 and the second sealing ring 313 play the role of axial limiting and sealing.

[0042] See also Fig. 9 , Fig.10 , Fig.11 and Fig.14In one embodiment of the present invention, the transmission part 7 includes a second gear ring 71, a driven gear 72, a transmission rod 73 and a transmission gear 74, the second gear ring 71 is movably connected in the limiting frame 322, the driven gear 72 and the transmission gear 74 are both fixedly connected to the transmission rod 73, the transmission rod 73 is connected to the fixed frame 32, the driving module 5 is transmission-connected to the inner side of the second gear ring 71, the outer side of the second gear ring 71 is transmission-connected to the driven gear 72, the first gear ring 411 is transmission-connected to the transmission gear 74, and the number of the transmission part 7 is one group.

[0043] See also Figure 2 and Fig.11 Furthermore, the material guide assembly 2 also includes a toothed disc 24 and a limit disc 25, both of which are fixedly connected to the fixed shaft 22, the driving module 5 is fixedly connected to the toothed disc 24, a pawl is provided on the surface of the limit disc 25, and the ratchet ring 321 is meshed with the pawl. The meshing connection between the ratchet ring 321 and the pawl is used to limit the ball shell 3.

[0044] See also Figure 7 and Fig.11 Furthermore, the driving module 5 includes a driving motor 51, a driving shaft 52, a driving gear 53, an electromagnet 54, a first return spring 55, a limit end 56 and a bracket 57. The driving motor 51 and the bracket 57 are both fixedly connected to the fixing frame 32. The driving motor 51 is connected to the driving shaft 52. The surface and end of the driving shaft 52 are respectively provided with limit ribs and a limit end 56. The driving gear 53 is slidably connected to the driving shaft 52 and the surface of the limit rib. The surfaces of the bracket 57 and the driving gear 53 are respectively inlaid with electromagnets 54 and magnetic rings. The first return spring 55 is connected between the driving gear 53 and the bracket 57. The second gear ring 71 and the toothed disc 24 are both transmission-connected to the driving gear 53.

[0045] In an embodiment of the present invention, when the electromagnet 54 is energized, the magnetic attraction between the energized electromagnet 54 and the magnetic ring drives the driving gear 53 to move along the driving shaft 52 and the limiting rib. When the electromagnet 54 is in contact with the magnetic ring, the driving gear 53 is transmission-connected to the second gear ring 71. After the electromagnet 54 is energized, the magnetic ring loses the magnetic attraction of the electromagnet 54. Therefore, the elastic force of the first return spring 55 drives the driving gear 53 to contact the limiting end 56. At this time, the driving gear 53 is transmission-connected to the toothed disc 24.

[0046] Working principle: the material enters the second tube body 113 through the first tube body 111 and a group of tapered holes 31 aligned with the material guide channel 211, and then enters the pump body 1. At this time, the slider 63 in the moving part 6 contacts the protrusion 231, and the first gear ring 411 is separated from the transmission gear 74. The protrusion 231 plays the role of fixing the conical shell 41 and the filter element 42 in the tapered hole 31. The first return spring 55 is in a compressed state. When the pump body 1 detects that the material flow rate or pressure inside the feed pipe 11 is abnormal, the driving motor 51 first controls the driving gear 53 to rotate through the driving shaft 52. The rotating driving gear 53 controls the ball shell 3, the separation filter component 4, and the driving gear 53 through the transmission connection with the toothed disc 24. The module 5, the moving part 6 and the transmission part 7 rotate 90 degrees together with the fixed shaft 22 as the axis, so that the other group of tapered holes 31 is aligned with the material guide channel 211, and the upper group of tapered holes 31 is rotated to a position aligned with the maintenance port 1123. Since the slider 63 in the moving part 6 is disengaged from the protrusion 231 at this time, the elastic force of the first return spring 55 drives the slide bar 62, the second annular guide rail 61, and the tapered housing 41 to move toward the maintenance port 1123 through the fixed ring 64 until the first gear ring 411 is engaged with the transmission gear 74 in the transmission part 7 and stops. Since the moving tapered housing 41 can be closer to the maintenance port 1123 at this time, it is convenient to disassemble and install the filter element 42 in the tapered housing 41; Then, the electromagnet 54 is energized. The energized electromagnet 54 controls the driving gear 53 to move along the driving shaft 52 to a position in contact with the second gear ring 71 by the principle of magnetic adsorption. The ratchet at the position of the retaining ring 1122 limits the ball shell 3 through the ratchet ring 321, so as to prevent the ball shell 3 from deviating from the guide channel 211 due to rotation or vibration. The driving motor 51 rotates through the driving gear 53, the second gear ring 71, the driven gear 72, the transmission rod 73 and the transmission gear 74. The rotating transmission gear 74 controls the cone 53 through the first gear ring 411. The conical shell 41, the filter element 42 and the rotating ring 412 rotate in the second annular guide rail 61. The centrifugal force generated by the rotating conical shell 41 and the filter element 42 drives the particulate impurities attached to the surface of the filter element 42 to separate from the filter element 42, and pass through the residue outlet 413 into the conical hole 31, and finally are discharged outward along the residue outlet 311 in the conical hole 31 and the residue discharge pipe 1121 at the position of the spherical cover 112, thereby realizing the function of automatically cleaning the filter residue on the surface of the filter element 42. On the one hand, it is convenient for the recycling of the filter element 42, and on the other hand, it improves the efficiency of cleaning the filter element 42.

[0047] To summarize, the present application utilizes a structural design in which the material guide component 2, the ball shell 3, the separation filter component 4, the drive module 5, the moving part 6 and the transmission part 7 cooperate with each other. On the basis of automatically replacing the filter element 42 and aligning it with the material guide channel 211, it can also control the movement and rotation of the filter element 42 with particulate impurities adhered to it. On the one hand, it is convenient to use tools to disassemble and remove the filter element 42 that is a certain distance away from the conical hole 31. On the other hand, the centrifugal force generated by the rotating filter element 42 can automatically fall off the particulate impurities attached to the surface of the filter element 42. The fallen particulate impurities enter the residue outlet 311 along the inner wall of the conical hole 31 and are discharged outward. It has the characteristics of easy disassembly and replacement of the filter element 42 and automatic cleaning of particulate impurities on the surface of the filter element 42 before replacing the filter element 42.

[0048] For those skilled in the art, although several embodiments and examples of the present invention have been described, these embodiments and examples are provided as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the scope of the main purpose of the invention.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A three-screw pump for quantitative material blocking prevention transportation, comprising a pump body (1) and a discharge pipe (12), wherein the pump body (1) is fixedly connected to the discharge pipe (12), characterized in that: Also includes: A feed pipe (11), the feed pipe (11) comprising a first pipe body (111), a spherical cover (112) and a second pipe body (113), the second pipe body (113) being fixedly connected to the pump body (1), and the spherical cover (112) being distributed between the first pipe body (111) and the second pipe body (113); A material guide assembly (2), the material guide assembly (2) comprising a ball core (21), a material guide channel (211), a fixed shaft (22) and a first annular guide rail (23), the fixed shaft (22) and the first annular guide rail (23) are both fixedly connected to the ball core (21), and the surface of the ball core (21) is provided with a material guide channel (211); A spherical shell (3) distributed between the spherical cover (112) and the spherical core (21), wherein a conical hole (31) is provided on the surface of the spherical cover (112), and a slag drop opening (311) is provided inside the conical hole (31); A separation filter assembly (4), the separation filter assembly (4) comprising a conical shell (41) and a filter element (42), the conical shell (41) being located in the conical hole (31), the filter element (42) being fixedly connected in the conical shell (41), and a first toothed ring (411) being fixedly connected to the outer side of the conical shell (41); A driving module (5), the driving module (5) being connected to one side of the spherical shell (3), and the fixed shaft (22) being in driving connection with the driving module (5); A moving part (6) penetrating the spherical shell (3), wherein the moving part (6) is slidably connected between the first annular guide rail (23) and the conical shell (41); A transmission part (7) connected to the ball shell (3), wherein the transmission part (7) is transmission-connected between the drive module (5) and the first gear ring (411).

2. A three-screw pump for quantitative material transportation with anti-blocking according to claim 1, characterized in that: The moving part (6) comprises a second annular guide rail (61), a sliding rod (62), a slider (63), a fixed ring (64) and a second return spring (65); the sliding rod (62) is fixedly connected between the slider (63) and the second annular guide rail (61); a rotating ring (412) is fixedly connected to the outer side of the conical shell (41); the rotating ring (412) is rotatably connected in the second annular guide rail (61); the sliding rod (63) is slidably connected to the inner side of the first annular guide rail (23); the fixed ring (64) is fixedly connected to the sliding rod (62); the second return spring (65) is movably sleeved on the surface of the sliding rod (62); and one end of the second return spring (65) is connected to the fixed ring (64).

3. A three-screw pump for quantitative material transportation with anti-blocking according to claim 2, characterized in that: The number of the conical holes (31) is six, and the six conical holes (31) are symmetrically distributed about the center of the spherical shell (3). Two of the conical holes (31) distributed axially along the fixed axis (22) are fixedly connected to a fixing frame (32), and the fixing frame (32) is fixedly connected to a limiting frame (322) and a ratchet ring (321). The sliding rod (62) passes through the fixing frame (32), and the other end of the second return spring (65) is connected to the fixing frame (32).

4. A three-screw pump for quantitative material blocking prevention transportation according to claim 3, characterized in that: A protrusion (231) is provided on the inner side of the first annular guide rail (23), and the two protrusions (231) are arranged along the direction of the material guiding channel (211), and the direction of the material guiding channel (211) is consistent with the direction of the first tube body (111) and the second tube body (113).

5. A three-screw pump for quantitative material transportation with anti-blocking according to claim 4, characterized in that: The transmission part (7) comprises a second gear ring (71), a driven gear (72), a transmission rod (73) and a transmission gear (74); the second gear ring (71) is movably connected in a limiting frame (322); the driven gear (72) and the transmission gear (74) are both fixedly connected to the transmission rod (73); the transmission rod (73) is connected to the fixed frame (32); the drive module (5) is transmission-connected to the inner side of the second gear ring (71); the outer side of the second gear ring (71) is transmission-connected to the driven gear (72); and the first gear ring (411) is transmission-connected to the transmission gear (74).

6. A three-screw pump for quantitative material transportation with anti-blocking according to claim 5, characterized in that: The material guide assembly (2) further comprises a toothed disc (24) and a limiting disc (25), wherein the toothed disc (24) and the limiting disc (25) are both fixedly connected to the fixed shaft (22), the driving module (5) is fixedly connected to the toothed disc (24), a pawl is provided on the surface of the limiting disc (25), and the ratchet ring (321) is meshedly connected to the pawl.

7. A three-screw pump for quantitative material transportation with anti-blocking according to claim 6, characterized in that: The driving module (5) comprises a driving motor (51), a driving shaft (52), a driving gear (53), an electromagnet (54), a first return spring (55), a limit end (56) and a bracket (57); the driving motor (51) and the bracket (57) are both fixedly connected to a fixing frame (32); the driving motor (51) is connected to the driving shaft (52); the surface and end of the driving shaft (52) are respectively provided with limit ribs and a limit end (56); the driving gear (53) is slidably connected to the driving shaft (52) and the surface of the limit ribs; the surfaces of the bracket (57) and the driving gear (53) are respectively inlaid with an electromagnet (54) and a magnetic ring; the first return spring (55) is connected between the driving gear (53) and the bracket (57); the second gear ring (71) and the toothed disc (24) are both drivingly connected to the driving gear (53).

8. A three-screw pump for quantitative material transportation with anti-blocking according to claim 1, characterized in that: A maintenance port (1123) is provided at a position of the spherical cover (112) corresponding to the movable part (6), and a sealing cover (114) is threadedly connected to the maintenance port (1123); a retaining ring (1122) is provided at a position of the inner wall of the spherical cover (112) parallel to the fixed shaft (22), and a slag discharge pipe (1121) is fixedly connected to the retaining ring (1122).

9. A three-screw pump for quantitative material transportation with anti-blocking according to claim 1, characterized in that: The inner walls of the four tapered holes (31) symmetrically distributed about the fixed axis (22) are each provided with a first sealing ring (312) and a second sealing ring (313), and the first sealing ring (312) and the second sealing ring (313) are both in contact with the tapered housing (41).

10. A three-screw pump for quantitative material transportation with anti-blocking according to claim 5, characterized in that: The surface of the conical shell (41) is provided with a plurality of slag passing openings (413).

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