Mixing machine hopper cover positioning and locking structure

Abstract

The invention relates to the technical field of hopper butt joint, in particular to a mixer hopper cover positioning and locking structure which comprises a rack, a top plate is fixed to the top end of the rack, stand columns are fixed to the outer side of the rack, an adjusting assembly is fixed to the top ends of the stand columns, a stirring assembly is arranged at the top end of the top plate, and a hopper is arranged at the bottom end of the stirring assembly. A hopper cover is fixed to the top end of the hopper and comprises an upper cover and a lower sealing part which are connected, and an upper inflation sealing ring and a lower inflation sealing ring are arranged on the periphery of the outer side face of the lower sealing part. The stirring assembly comprises a mounting plate, a stirring motor fixed to the top end of the mounting plate, positioning cylinders fixed to the two ends of the inner side of the mounting plate and outer probe rods arranged in the middles of the positioning cylinders, centering and sealing of the hopper cover and the hopper of the mixing machine are achieved, and the sealing effect of a lower inflation sealing ring can be ensured through first inflation and second inflation; the device is exquisite in structure, convenient to operate and reliable in work, the main structure basically adopts an assembly type structure, and disassembly, installation and maintenance are convenient.

Description

Technical Field

[0001] The invention relates to the technical field of hopper docking technology, and in particular to a positioning and locking structure for a mixer hopper cover. Background Art

[0002] When the automatic lifting mixer is working, the hopper filled with materials needs to be placed in the mixer frame first, and then the frame is automatically lifted and finally positioned and locked with the hopper cover. During the lifting process, the mixer holds the hopper tightly through the rotating frame and rotates along the mixing rotating axis to achieve mixing of the materials in the hopper. Therefore, a reliable positioning and locking mechanism is required to fix the hopper cover on the hopper to meet the mixing requirements.

[0003] Since the mixer hopper cover equipped with a stirring assembly is not easy to replace, and the hopper often has a small error in its diameter during processing, and the lifting mechanism of the automatic lifting mixer is difficult to completely ensure that the hopper mouth and the hopper cover are exactly concentric when lifting the hopper, in order to ensure that the mixer hopper cover and each hopper on the lifting mechanism can be well sealed;

[0004] And when in use, the stirring process of the hopper needs to be improved during operation;

[0005] There is a lack of tensioning structure between the external driving structures, and there is a lack of structure for adjusting the distance and height between the frame and the hopper. Summary of the invention

[0006] Technical issues solved

[0007] In view of the above-mentioned shortcomings of the prior art, the present invention provides a mixer hopper cover positioning and locking structure, which can effectively solve the problems in the prior art that the hopper cover is inconvenient to replace, the stirring effect needs to be improved, and the distance between the frame and the hopper needs to be adjusted.

[0008] Technical Solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] The present invention provides a positioning and locking structure for a mixer hopper cover, comprising a frame, a top plate fixed on the top of the frame, a column fixed on the outside of the frame, and an adjustment component fixed on the top of the column, a stirring component is arranged on the top of the top plate, a hopper is arranged on the bottom of the stirring component, a hopper cover is fixed on the top of the hopper, the hopper cover comprises an upper cover and a lower sealing part connected to each other, an upper inflatable sealing ring and a lower inflatable sealing ring are arranged around the outer side surface of the lower sealing part, the stirring component comprises a mounting plate, a stirring motor fixed to the top of the mounting plate, a positioning cylinder fixed to the two ends of the inner side of the mounting plate, and an outer probe rod arranged in the middle of the positioning cylinder, a circular hole is opened in the middle of the outer probe rod, and the upper The two ends of the lower part are fixed with an engaging cylinder, the adjusting assembly includes two groups of base plates, a base fixed to the top base plate, a sliding plate arranged on the base and a driving motor arranged at the bottom of the sliding plate, two groups of auxiliary rods and screws are fixed between the two groups of base plates, the engaging cylinder is sleeved on the outside of the screw, and a positioning pin is fixed on the top of the top base plate, one end of the positioning pin is connected to the side wall top cover of the sliding plate through a hinge seat, the top end of the screw passes through the base plate and is fixedly connected to the pulley, and the top end of the driving motor is also transmission-connected with a pulley, and power transmission is realized between the two groups of pulleys through belts, the bottom output end of the stirring assembly is transmission-connected to the stirring rod, and the bottom end of the stirring rod is fixedly connected to the stirring disk.

[0011] Furthermore, the maximum diameter of the lower sealing portion of the hopper cover is not greater than the caliber of the hopper.

[0012] Furthermore, an inner groove is opened in the middle of the frame, and hydraulic cylinders are fixed at the four corners of the top of the frame. The output end of the hydraulic cylinder is transmission-connected to the top of the hydraulic rod, and the bottom end of the hydraulic rod is fixedly connected to the ground.

[0013] Furthermore, the frame is fixedly connected to the top of the hopper through a connecting structure, and the connecting structure includes a positioning plate fixed to the bottom end of the frame, an outer cylinder fixed to the bottom end of the positioning plate, and an inner cylinder sleeved in the outer cylinder, the inner cylinder and the inner side walls of the outer cylinder are fixedly connected by a spring, and the bottom end of the inner cylinder is fixedly connected to the top of the hopper through an angle code.

[0014] Furthermore, both ends of the screw are fixedly connected to the bottom plate via a bearing seat structure, and the screw is meshed and fixed with the inner side wall of the meshing cylinder.

[0015] Furthermore, the frame is connected to the hopper cover by at least three steel cables, and the at least three steel cables are evenly distributed on the outside of the hopper cover, the diameter of the upper cover of the hopper cover is larger than the diameter of the lower sealing part, so that the outer edge of the upper cover protrudes from the lower sealing part and covers the hopper mouth, and a sealing gasket is arranged on the lower surface of the flange of the upper cover protruding from the lower sealing part, and the upper end of the sealing gasket is embedded in the positioning groove on the lower surface of the flange, and the hopper mouth of the hopper extends outward to form an annular plane, and the lower end of the sealing gasket protrudes from the lower surface of the flange and abuts against the upper surface of the annular plane, and the hopper includes a neck and an expansion part extending downward from the neck; the height of the neck is smaller than the height of the lower sealing part, so that the lower inflatable sealing ring is at least partially sealed with the inner wall of the expansion part, and the upper inflatable sealing ring and the lower inflatable sealing ring are respectively embedded in the first annular groove and the second annular groove of the lower sealing part.

[0016] Furthermore, a plurality of groups of holes and grooves are provided on the side wall of the neck, and the sizes of the holes and grooves are adapted to the sizes of the steel cable.

[0017] Furthermore, the hinge seat of the base plate at the top is an iron structure with a threaded hole in the middle, the bottom of which is fixed to the base plate, and the surface of the positioning pin shaft is provided with a groove structure engaged with the threaded hole, and two groups of hinge seat structures are symmetrically arranged.

[0018] Furthermore, the two groups of positioning tubes are sleeved on the outside of the auxiliary rod.

[0019] Beneficial Effects

[0020] Compared with the known public technology, the technical solution provided by the present invention has the following beneficial effects:

[0021] The hopper and its structure provided in the present invention, when in use, first inflate the upper inflatable sealing ring, and then center the hopper cover which is not concentric with the hopper mouth. After the hopper cover is aligned, the lower inflatable sealing ring is inflated to play a sealing and locking role. The technical scheme realizes the centering and sealing of the mixer hopper cover and the hopper through the double-inflated sealing ring structure, and the first and the second inflation can ensure the sealing effect of the lower inflatable sealing ring. The device has a sophisticated structure, is easy to operate, and works reliably. The main structure basically adopts an assembled structure, which is easy to disassemble, install, and repair.

[0022] In this device, through the provision of hydraulic cylinders, hydraulic rods, feet and frames, the user can drive the hydraulic rods at the bottom through the hydraulic cylinder structures at the four corners, move the frame and its auxiliary structural parts to the top / bottom end, adjust the distance from the hopper, and adjust the position of the stirring rod in the hopper to achieve the function of sufficient stirring.

[0023] In this device, through the provided stirring assembly and adjustment assembly structure, the user can realize power transmission through the driving motor structure-pulley on one side, drive the screw at the bottom to rotate, and through the meshing relationship of the outer probe rod-meshing cylinder, drive the outer probe rod and the mounting plate and its attached structure to move, thereby drive the stirring rod and the stirring plate to adjust the height, and the stirring motor drives the stirring plate to rotate through the stirring plate, and on the sliding plate, through the provided positioning pin structure, the user can drive the sliding plate to move on the hinged seat by rotating the positioning pin structure, and the sliding plate moves on the base at the bottom, which plays the function of adjusting the spacing of the pulleys, satisfies the function of adjusting the tension, and prolongs the use time.

[0024] In this device, through the provided connection structure, the user can pass through the structure of the inner cylinder and the outer cylinder, and the interior thereof is connected and fixed by a spring structure, so the frame structure can be connected and fixed with the angle code and the hopper at the bottom through the connection structure, and the inner cylinder and the outer cylinder maintain contact. The internal spring can play an auxiliary connection effect and enhance the connectivity. When the internal hopper shakes, the inner cylinder and the outer cylinder can move relative to each other, and the spring is compressed and expanded to play a shock-absorbing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 It is a structural front view of the present invention;

[0028] Figure 3 for Figure 2 The structural diagram at A in the middle;

[0029] Figure 4 for Figure 3 A magnified view of the structure at B in the middle;

[0030] Figure 5 It is a structural decomposition diagram of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the stirring component and the adjusting component in the present invention;

[0032] Figure 7 It is a structural schematic diagram of the stirring assembly in the present invention;

[0033] Figure 8 It is a structural disassembly diagram of the hydraulic cylinder and the frame in the present invention;

[0034] Fig. 9 It is a structural cross-sectional view of the connection structure in the present invention.

[0035] The numbers in the figure represent: 1, hopper cover; 101, upper inflatable sealing ring; 102, lower inflatable sealing ring; 11, upper cover; 111, sealing pad; 112, flange; 12, lower sealing part; 121, first ring groove; 122, second ring groove; 13, hydraulic cylinder; 131, hydraulic rod; 132, foot; 14, top plate; 15, connecting structure; 151, positioning plate; 152, outer cylinder; 153, spring; 154, outer cylinder; 155, angle code; 16, inner groove; 2. Frame; 21. Steel rope; 3. Hopper; 31. Neck; 311. Hole groove; 32. Expansion part; 33. Annular plane; 4. Stirring assembly; 41. Stirring motor; 42. Mounting plate; 43. Positioning cylinder; 44. External probe rod; 45. Engaging cylinder; 46. Screw; 47. Auxiliary rod; 48. Stirring disk; 49. Stirring rod; 5. Adjustment assembly; 51. Bottom plate; 52. Base; 53. Sliding plate; 54. Positioning pin; 55. Drive motor; 56. Pulley. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] The present invention will be further described below in conjunction with the embodiments.

[0038] Embodiment: A positioning and locking structure for a mixer hopper cover, see the attached Figure 1 -Attached Fig. 9, comprising a frame 2, a top plate 14 is fixed to the top of the frame 2, a column is fixed to the outside of the frame 2, and an adjustment component 5 is fixed to the top of the column, a stirring component 4 is arranged at the top of the top plate 14, a hopper 3 is arranged at the bottom of the stirring component 4, a hopper cover 1 is fixed to the top of the hopper 3, and the hopper cover 1 comprises an upper cover 11 and a lower sealing part 12 connected to each other, and an upper inflatable sealing ring 101 and a lower inflatable sealing ring 102 are arranged around the outer side surface of the lower sealing part 12, and the stirring The mixing assembly 4 includes a mounting plate 42, a mixing motor 41 fixed to the top of the mounting plate 42, a positioning tube 43 fixed to the inner ends of the mounting plate 42, and an outer probe rod 44 arranged in the middle of the positioning tube 43, a circular hole is opened in the middle of the outer probe rod 44, and the upper and lower ends of the outer probe rod 44 are fixed with an engagement tube 45, and the adjustment assembly 5 includes two sets of bottom plates 51, a base 52 fixed to the top bottom plate 51, a sliding plate 53 arranged on the base 52, and a driving motor arranged at the bottom of the sliding plate 53 55, two groups of auxiliary rods 47 and screws 46 are fixed between the two groups of bottom plates 51, the meshing cylinder 45 is sleeved on the outside of the screw 46, and a positioning pin 54 is fixed on the top of the top bottom plate 51, one end of the positioning pin 54 is connected to the side wall top cover of the sliding plate 53 through a hinge seat, the top end of the screw 46 passes through the bottom plate 51, and is fixedly connected to the pulley 56, and the top end of the driving motor 55 is also connected to the pulley 56, and the power transmission between the two groups of pulleys 56 is realized through the belt The bottom output end of the stirring assembly 4 is transmission-connected to the stirring rod 49, and the bottom end of the stirring rod 49 is fixedly connected to the stirring disk 48; through the hydraulic cylinder 13-hydraulic rod 131-foot 132 and the frame 2, the user can drive the hydraulic rod 131 at the bottom through the hydraulic cylinder 13 structure at the four corners, move the frame 2 and its auxiliary structural parts to the top / bottom end, adjust the distance between the hopper 3, and adjust the position of the stirring rod 49 in the hopper 3 to achieve the function of sufficient stirring.

[0039] The maximum diameter of the lower sealing portion 12 of the hopper cover 1 is not greater than the diameter of the hopper 3 .

[0040] The middle part of the frame 2 is provided with an inner groove 16, and the four corners of the top of the frame 2 are fixed with a hydraulic cylinder 13, the output end of the hydraulic cylinder 13 is transmission-connected to the top of the hydraulic rod 131, and the bottom end of the hydraulic rod 131 is fixedly connected to the foot 132; the frame 2 is fixedly connected to the top of the hopper 3 through a connecting structure 15, and the connecting structure 15 includes a positioning plate 151 fixed to the bottom end of the frame 2, an outer cylinder 152 fixed to the bottom end of the positioning plate 151, and an inner cylinder 154 sleeved in the outer cylinder 152, the inner cylinder 154 and the inner side wall of the outer cylinder 152 are fixedly connected by a spring 153, and the bottom end of the inner cylinder 154 is fixedly connected to the top of the hopper 3 by an angle code 155; the two ends of the screw 46 are fixedly connected to the bottom plate 51 through a bearing seat structure, and the screw 46 and the meshing cylinder The inner wall of 45 is meshed and fixed; through the set stirring component 4 and adjustment component 5 structure, the user can realize power transmission through the driving motor 55 structure-pulley 56 on one side, drive the screw 46 at the bottom to rotate, and through the meshing relationship of the outer probe rod 44-engaging tube 45, drive the outer probe rod 44 and the mounting plate 42 and its affiliated structures to move, and then drive the stirring rod 49 and the stirring disk 48 to adjust the height, and the stirring motor 41 drives the stirring disk 48 to rotate through the stirring plate, and on the sliding plate 53, through the set positioning pin 54 structure, the user can drive the sliding plate 53 to move on the hinge seat by rotating the positioning pin 54 structure, and the sliding plate 53 moves on the base 52 at the bottom, which plays the function of adjusting the spacing of the pulleys 56, satisfies the function of adjusting the tension, and prolongs the use time.

[0041] The frame 2 is connected to the hopper cover 1 through at least three steel cables 21, and the at least three steel cables 21 are evenly distributed on the outside of the hopper cover 1. The diameter of the upper cover 11 of the hopper cover 1 is larger than the diameter of the lower sealing portion 12, so that the outer edge of the upper cover 11 protrudes from the lower sealing portion 12 and covers the hopper 3 mouth. A sealing gasket 111 is provided on the lower surface of the flange 112 of the upper cover 11 protruding from the lower sealing portion 12, and the upper end of the sealing gasket 111 is embedded in the positioning groove on the lower surface of the flange 112. The hopper mouth of the hopper 3 extends outward to form an annular plane 33, and the lower end of the sealing gasket 111 protrudes from the lower surface of the flange 112 and contacts with the upper surface of the annular plane 33. The hopper 3 includes a neck 31 and an expansion portion 32 extending downward from the neck 31; the height of the neck 31 is smaller than that of the lower sealing portion 12, so that the lower inflatable sealing ring 102 at least partially seals with the inner wall of the expansion part 32, and the upper inflatable sealing ring 101 and the lower inflatable sealing ring 102 are respectively embedded in the first annular groove 121 and the second annular groove 122 of the lower sealing part 12; the hopper 3 and its structure are provided, when in use, the upper inflatable sealing ring 101 is first inflated, and the hopper cover 1 that is not concentric with the hopper mouth is centered, and after the hopper cover 1 is centered, the lower inflatable sealing ring 102 is inflated to play a sealing and locking role; the technical solution realizes the centering and sealing of the mixer hopper cover 1 and the hopper 3 through the double-inflated sealing ring structure, and the first and last inflation can ensure the sealing effect of the lower inflatable sealing ring 102; the device has a sophisticated structure, is easy to operate, and works reliably. The main structure basically adopts an assembled structure, which is easy to disassemble, install, and repair.

[0042] The side wall of the neck 31 is provided with a plurality of groups of holes 311, and the size of the holes 311 is adapted to the size of the steel cable 21; the hinge seat of the bottom plate 51 at the top is an iron structure with a threaded hole in the middle, the bottom of which is fixed on the bottom plate 51, and the surface of the positioning pin shaft 54 ​​is provided with a groove structure meshing with the threaded hole, and the hinge seat structure is symmetrically arranged with two groups; the two groups of positioning cylinders 43 are sleeved on the outside of the auxiliary rod 47 to facilitate power transmission between the two; through the connection structure provided Structure 15, the user can pass through the structure of the inner cylinder and the outer cylinder 154, and the interior thereof is connected and fixed by the spring 153 structure, so the frame 2 structure can be connected and fixed to the hopper 3 through the connecting structure 15 and the angle code 155 at the bottom, and the inner cylinder and the outer cylinder 154 maintain contact, and the internal spring 153 can play an auxiliary connection effect, strengthen the connectivity, and when the internal hopper 3 shakes, the inner cylinder and the outer cylinder 154 can move relative to each other, and the spring 153 is compressed and relaxed, which has a shock-absorbing effect.

[0043] The upper inflatable sealing ring 101 and the lower inflatable sealing ring 102 are respectively embedded in the first annular groove 121 and the second annular groove 122 of the lower sealing part 12, so that the inflatable sealing ring is retracted into the annular groove when not inflated to avoid wear and aging; the hopper mouth of the hopper 3 extends outward to form an annular plane 33, and the lower end of the sealing gasket 111 protrudes from the lower surface of the flange 112 and contacts with the upper surface of the annular plane 33; the steel cable connects the hopper cover so that the hopper cover has a movable space during assembly, which accommodates the assembly error of the lifting mechanism and the hopper This causes the vertical positions of the hopper and the hopper cover to be non-concentric; when the lifting assembly of the mixer fixes the hopper, the lower sealing part of the hopper cover is located in the hopper mouth, and the stirring knife component extends into the hopper. First, the upper inflatable sealing ring is inflated to straighten and center the hopper cover that is non-concentric with the hopper mouth. After the hopper cover is straightened, the lower inflatable sealing ring is inflated to play a sealing and locking role. The technical solution achieves the centering and sealing of the mixer hopper cover and the hopper through a double-inflated sealing ring structure, and the first and last inflation can ensure the sealing effect of the lower inflatable sealing ring.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A positioning and locking structure for a mixer hopper cover, characterized in that: The invention comprises a frame (2), a top plate (14) being fixed at the top of the frame (2), a column being fixed on the outside of the frame (2), and an adjustment assembly (5) being fixed at the top of the column, a stirring assembly (4) being arranged at the top of the top plate (14), a hopper (3) being arranged at the bottom of the stirring assembly (4), a hopper cover (1) being fixed at the top of the hopper (3), the hopper cover (1) comprising an upper cover (11) and a lower sealing part (12) being connected to each other, and an upper inflatable sealing ring (101) and a lower inflatable sealing ring (102) being arranged around the outer side surface of the lower sealing part (12); The stirring assembly (4) comprises a mounting plate (42), a stirring motor (41) fixed to the top of the mounting plate (42), a positioning tube (43) fixed to the inner ends of the mounting plate (42), and an outer probe rod (44) arranged in the middle of the positioning tube (43), a circular hole is opened in the middle of the outer probe rod (44), and engaging tubes (45) are fixed to the upper and lower ends of the outer probe rod (44); The adjustment assembly (5) comprises two groups of base plates (51), a base (52) fixed to the top base plate (51), a sliding plate (53) arranged on the base (52) and a driving motor (55) arranged at the bottom of the sliding plate (53). Two groups of auxiliary rods (47) and screw rods (46) are fixed between the two groups of base plates (51). The engagement cylinder (45) is sleeved on the outside of the screw rod (46). A positioning pin shaft (54) is fixed on the top of the top base plate (51). The positioning pin shaft (54) is fixed on the top of the top base plate (51). One end of the pin shaft (54) is connected to the side wall top cover of the sliding plate (53) through a hinge seat, the top end of the screw rod (46) passes through the bottom plate (51) and is fixedly connected to the pulley (56), and the top end of the driving motor (55) is also transmission-connected to the pulley (56), and power transmission is achieved between the two sets of pulleys (56) through a belt, the bottom output end of the stirring assembly (4) is transmission-connected to the stirring rod (49), and the bottom end of the stirring rod (49) is fixedly connected to the stirring disk (48).

2. A mixer hopper cover positioning and locking structure according to claim 1, characterized in that: The maximum diameter of the lower sealing portion (12) of the hopper cover (1) is not greater than the diameter of the hopper (3).

3. A mixer hopper cover positioning and locking structure according to claim 1, characterized in that: An inner groove (16) is provided in the middle of the frame (2), and a hydraulic cylinder (13) is fixed at the four corners of the top end of the frame (2). The output end of the hydraulic cylinder (13) is transmission-connected to the top end of a hydraulic rod (131), and the bottom end of the hydraulic rod (131) is fixedly connected to a foot (132).

4. A mixer hopper cover positioning and locking structure according to claim 1, characterized in that: The frame (2) is fixedly connected to the top of the hopper (3) via a connecting structure (15); the connecting structure (15) comprises a positioning plate (151) fixed to the bottom of the frame (2), an outer cylinder (152) fixed to the bottom of the positioning plate (151), and an inner cylinder (154) sleeved in the outer cylinder (152); the inner cylinder (154) and the inner side wall of the outer cylinder (152) are fixedly connected via a spring (153), and the bottom end of the inner cylinder (154) is fixedly connected to the top of the hopper (3) via an angle code (155).

5. A mixer hopper cover positioning and locking structure according to claim 4, characterized in that: Both ends of the screw rod (46) are fixedly connected to the bottom plate (51) via a bearing seat structure, and the screw rod (46) is meshed and fixed with the inner side wall of the meshing cylinder (45).

6. A mixer hopper cover positioning and locking structure according to claim 1, characterized in that: The frame (2) is connected to the hopper cover (1) via at least three steel cables (21), and the at least three steel cables (21) are evenly distributed on the outside of the hopper cover (1). The diameter of the upper cover (11) of the hopper cover (1) is greater than the diameter of the lower sealing portion (12), so that the outer edge of the upper cover (11) protrudes from the lower sealing portion (12) and covers the opening of the hopper (3). A sealing gasket (111) is provided on the lower surface of a flange (112) of the upper cover (11) protruding from the lower sealing portion (12), and the upper end of the sealing gasket (111) is embedded in a positioning groove on the lower surface of the flange (112). The hopper opening of the hopper (3) extends outward to form a sealing gasket. The hopper (3) is a hopper that is provided with a plurality of sealing members and a plurality of sealing members. The hopper (3) is provided with a plurality of sealing members and a plurality of sealing members. The hopper (3) is provided with a plurality of sealing members and a plurality of sealing members. The hopper (3) is provided with a plurality of sealing members and a plurality of sealing members. The hopper (3) is provided with a plurality of sealing members and a plurality of sealing members. The hopper (3) is provided with a plurality of sealing members and a plurality of sealing members. The hopper (3) is provided with a plurality of sealing members and a plurality of sealing members. The hopper (3) is provided with a plurality of sealing members and a plurality of sealing members. The hopper (3) is provided with a plurality of sealing members and a plurality of sealing members. The hopper (3) is provided with a plurality of sealing members and a plurality of sealing members. The hopper (3) is provided with a plurality of sealing members and a plurality of sealing members.

7. A mixer hopper cover positioning and locking structure according to claim 6, characterized in that: A plurality of groups of holes (311) are provided on the side wall of the neck (31), and the size of the holes (311) is adapted to the size of the steel cable (21).

8. A mixer hopper cover positioning and locking structure according to claim 1, characterized in that: The hinge seat of the bottom plate (51) at the top is an iron structure with a threaded hole in the middle, and its bottom is fixed on the bottom plate (51). The surface of the positioning pin shaft (54) is provided with a groove structure meshing with the threaded hole, and two groups of hinge seat structures are symmetrically arranged.

9. A mixer hopper cover positioning and locking structure according to claim 1, characterized in that: The two groups of positioning cylinders (43) are sleeved on the outside of the auxiliary rod (47).

Images