Anti-offset dried bean curd sauce brewing sugar degree detector

Abstract

The utility model relates to the field of sugar degree detectors, in particular to an anti-deviation sugar degree detector for brewing dried bean curd sauce. The technical problems that in the prior art, a sugar degree measuring instrument is generally lack of an anti-deviation protection mechanism, stable placement of a container is difficult to achieve, and the overall stability of the sugar degree measuring instrument is difficult to improve are solved. According to the technical scheme, the offset-preventing dried bean curd sauce brewing sugar degree detector comprises a supporting assembly; the device further comprises a detection assembly, a rotating assembly, an anti-toppling assembly, a mounting assembly and a temporary storage assembly. The movable frame is placed on the outer wall of the fixed block, the lower end of the movable frame makes contact with the ground, the movable frame has a certain weight, and therefore the stability of the bearing plate can be improved when the bearing plate is placed, and the stability of the device can be improved by using the cushion disc and the supporting legs to support the device.

Description

Technical Field

[0001] The utility model belongs to the field of sugar content detectors, and in particular relates to a sugar content detector for brewing dried tea and sauces which can prevent deviation. Background Art

[0002] In the brewing industry, especially in the production of dried tea sauces, sugar content is one of the important indicators for measuring product quality. Accurate detection of sugar content is of great significance for ensuring product quality, improving production efficiency and reducing costs. In the traditional production of dried tea sauces, sugar content detection is often carried out manually, using a refractometer or a handheld saccharimeter to measure, or placing the liquid to be tested in a measuring slot on the saccharimeter for testing. For multiple liquids to be tested, the liquids are usually temporarily stored in a container. After the test is completed, the previous measuring slot is cleaned, and the liquid in the container is poured into the measuring slot for measurement. However, the saccharimeter in the prior art usually lacks an anti-drift protection mechanism, which makes it difficult to achieve stable placement of the container and to improve the overall stability of the saccharimeter, and further improvement is needed. Utility Model Content

[0003] In order to overcome the problem that the sugar content measuring instrument in the prior art usually lacks an anti-drift protection mechanism, it is difficult to achieve stable placement of the container and it is difficult to improve the overall stability of the sugar content detector.

[0004] The technical solution of the utility model is: a tea dry sauce brewing sugar content detector that prevents deviation, including a support component; also including a detection component, a rotating component, an anti-dumping component, a mounting component and a temporary storage component; the upper end of the support component is provided with a detection component; the left end of the support component is provided with a rotating component; the lower part of the support component is provided with an anti-dumping component for reinforcing the support component; the support component is provided with a mounting component; the mounting component is provided with a temporary storage component for temporarily storing liquid.

[0005] Preferably, when in use, the liquid is placed on the temporary storage component, which is then positioned, and then the mounting component is installed on the support component, thereby achieving rapid and stable temporary storage and stable placement of multiple liquids. The anti-dumping component is installed on the support component to improve the overall stability of the support component. The liquid is placed on the detection component for detection, and the detection component is shielded by rotating the rotating component during detection, which can prevent impurities from entering the detection component, thereby improving the accuracy of detection. This solves the problem that the sugar content measuring instrument in the prior art usually lacks an anti-drift protection mechanism, making it difficult to achieve stable placement of the container and to improve the overall stability of the sugar content detector.

[0006] Preferably, the supporting assembly includes a supporting plate, a first threaded column, a pad, a protective block and a supporting leg; the first threaded column is installed with through-threads at the four corner edges at the upper and lower ends of the supporting plate; the lower end of the first threaded column is fixedly connected to the pad; the supporting legs are fixedly connected to the four corner edges at the lower end of the supporting plate, and the first threaded column can be threadedly moved up and down on the supporting plate, thereby facilitating the adjustment of the height of the pad, and the stability of the device can be improved by supporting the device with the pad and the supporting legs.

[0007] Preferably, the detection component includes a sugar content detector, a detection slot and a limiting groove; the sugar content detector is fixedly connected to the upper end of the supporting plate; a detection slot is provided at the upper end of the sugar content detector; a circular and evenly distributed limiting groove is provided at the upper end of the sugar content detector, and liquid is placed in the detection slot and the sugar content detector is turned on to detect the liquid.

[0008] Preferably, the rotating assembly includes a first L-shaped block, a first slot body, a rotating column, a second L-shaped block, a first through hole, a movable column, a limiting cylinder, a screw hole, a second threaded column, a pressure plate and a first limiting column; the left end of the bearing plate is fixedly connected to the first L-shaped block; the upper end of the first L-shaped block is provided with a first slot body; the inner wall of the first slot body is movably provided with a rotating column; the upper end of the rotating column is fixedly connected to the second L-shaped block; the upper and lower ends of the second L-shaped block are penetrated by a first through hole; the inner wall of the first through hole is movably provided with a movable column; the outer wall of the movable column is fixedly connected to the limiting cylinder; the movable column is penetrated by a screw hole; the screw hole is located below the limiting cylinder; the lower end face of the limiting cylinder is in contact with the upper end face of the second L-shaped block; the inner wall of the screw hole is threadedly installed with the second threaded column; A pressure plate is fixedly connected to the lower end; a first limiting column is fixedly connected to the lower end of the pressure plate in a circular and evenly distributed shape; the first limiting column and the limiting groove are adapted to each other, and the first limiting column is placed on the inner wall of the limiting groove, so that the pressure plate can be quickly and stably placed on the upper end of the sugar content detector. When the pressure plate needs to be removed, the second threaded column is first removed from the inner wall of the screw hole, and then the movable column is manually lifted upward so that the screw hole is lifted above the top surface of the second L-shaped block, and then the second threaded column is threadedly installed on the inner wall of the screw hole, and the second threaded column can be used to block the upper end of the second L-shaped block to fix the pressure plate at a certain height, and then the second L-shaped block is manually rotated to make the rotating column rotate along the inner wall of the first slot body, so that the pressure plate can be conveniently removed from the first slot body.

[0009] Preferably, the anti-dumping assembly includes a fixed block and a movable frame; the lower end of the supporting plate is fixedly connected to two fixed blocks symmetrically about the center of the lower end surface of the supporting plate; the outer wall of the fixed block is movably provided with a movable frame, and the movable frame is placed on the outer wall of the fixed block so that the lower end of the movable frame contacts the ground. Since the movable frame has a certain weight, the stability of the supporting plate when it is placed can be improved.

[0010] Preferably, the installation assembly includes a second slot body, a mounting block, a third slot body and a second limiting column; the second slot body is penetrated at both ends of the left and right ends of the supporting plate; the inner wall of the second slot body is movably provided with a mounting block; the third slot body is provided at the upper end of the mounting block; the bottom surface of the inner wall of the third slot body is fixedly connected to the second limiting column, and the mounting block can be inserted into the inner wall of the second slot body to realize the quick installation and placement of the mounting block.

[0011] Preferably, the temporary storage component includes a sleeve block, a fixed plate, a first positioning hole, a test tube, a slot, an insert plate, a second positioning hole, a positioning column, a limiting ring, a solid plate and a third positioning hole; the outer wall of the second limiting column is sleeved with a sleeve block; the front end of the sleeve block is fixedly connected to a uniformly distributed fixed plate; the upper and lower ends of the fixed plate are penetrated with uniformly distributed first positioning holes; the inner wall of the first positioning hole is movably provided with a test tube; the front and rear ends of the fixed plate are penetrated with slots; the interior of the slot and the interior of the first positioning hole are interconnected; the inner wall of the slot is movably provided with an insert plate; the upper and lower ends of the insert plate are penetrated with second positioning holes; the inner wall of the second positioning hole is movably provided with a positioning column; the upper outer wall of the positioning column is fixedly connected to a limiting ring; the limiting The lower end face of the positioning ring fits with the upper end face of the top plug-in plate; a solid plate is fixedly connected to the lower front end of the sleeve block; third positioning holes are provided at the upper and lower ends of the solid plate; the inner wall of the third positioning hole is flush with the inner wall of the second positioning hole; the lower end of the positioning column passes through the third positioning hole and extends to the bottom of the solid plate, the plug-in plate is placed on the inner wall of the slot, and the test tube is placed on the inner wall of the first positioning hole, so that the upper end of the plug-in plate supports the test tube, and then the positioning column is passed from top to bottom through multiple second positioning holes and one third positioning hole, so that the lower end face of the limiting ring fits with the upper end face of the top plug-in plate, so that the plug-in plate can be stably placed, thereby improving the stability of the test tube when placed and facilitating the removal of the test tube.

[0012] Beneficial effects of the utility model:

[0013] 1. By placing the movable frame on the outer wall of the fixed block, the lower end of the movable frame is in contact with the ground. Since the movable frame has a certain weight, the stability of the load-bearing plate when placed can be improved. The mounting block is inserted into the inner wall of the second slot body, so that the mounting block can be quickly installed and placed. The first threaded column can move up and down on the load-bearing plate, so as to facilitate the adjustment of the height of the pad. The pad and the supporting legs are used to support the device, which can improve the stability of the device, and solve the problem that the sugar content measuring instrument in the prior art is usually difficult to improve the overall stability of the sugar content detector;

[0014] 2. By placing the plug plate on the inner wall of the slot and placing the test tube on the inner wall of the first positioning hole, the upper end of the plug plate supports the test tube, and then the positioning column passes through the plurality of second positioning holes and a third positioning hole from top to bottom, so that the lower end surface of the limiting ring and the upper end surface of the uppermost plug plate fit together, the plug plate can be stably placed, thereby improving the stability of the test tube when placed, and facilitating the taking of the test tube, solving the problem that the sugar content measuring instrument in the prior art usually lacks an anti-deviating protection mechanism and is difficult to achieve stable placement of the container;

[0015] 3. By placing the first limiting column on the inner wall of the limiting groove, the pressure plate can be quickly and stably placed on the upper end of the sugar content tester. When the pressure plate needs to be removed, first remove the second threaded column from the inner wall of the screw hole, and then manually lift the movable column upward so that the screw hole is lifted above the top surface of the second L-shaped block, and then thread the second threaded column on the inner wall of the screw hole. The second threaded column can be used to block the upper end of the second L-shaped block to fix the pressure plate at a certain height. Then manually rotate the second L-shaped block to make the rotating column rotate along the inner wall of the first slot body, so that the pressure plate can be easily removed from the first slot body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a three-dimensional structural schematic diagram of a tea and sauce brewing sugar content detector that prevents deviation according to the utility model;

[0017] Figure 2 The present invention shows a schematic diagram of the three-dimensional disassembly structure of a supporting component, a detection component and a rotating component of a tea and sauce brewing sugar content detector that prevents deviation;

[0018] Figure 3 The present invention shows a schematic diagram of a three-dimensional disassembly structure of an anti-dumping component of a tea and sauce brewing sugar content detector that prevents deviation;

[0019] Figure 4 Shown is a three-dimensional structural schematic diagram of an installation assembly of a tea and sauce brewing sugar content detector that prevents deviation according to the utility model;

[0020] Figure 5 Shown is a three-dimensional disassembled structural schematic diagram of a temporary storage component of a tea and sauce brewing sugar content detector that prevents deviation according to the utility model.

[0021] The marks in the attached drawings are: 1. Support assembly; 101. Loading plate; 102. First threaded column; 103. Pad; 104. Protective block; 105. Support leg; 2. Detection assembly; 201. Sugar content detector; 202. Detection slot; 203. Limiting groove; 3. Rotation assembly; 301. First L-shaped block; 302. First slot body; 303. Rotation column; 304. Second L-shaped block; 305. First through hole; 306. Movable column; 307. Limiting cylinder; 308. Screw hole; 309. Second threaded column; 31 0. Pressure plate; 311. First limiting column; 4. Anti-dumping assembly; 401. Fixed block; 402. Movable frame; 5. Mounting assembly; 501. Second slot; 502. Mounting block; 503. Third slot; 504. Second limiting column; 6. Temporary storage assembly; 601. Set block; 602. Fixed plate; 603. First positioning hole; 604. Test tube; 605. Slot; 606. Insert plate; 607. Second positioning hole; 608. Positioning column; 609. Limiting ring; 610. Solid plate; 611. Third positioning hole. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] See also Figure 1 The utility model provides an embodiment: a tea dry sauce brewing sugar content detector that prevents deviation, including a support component 1; also including a detection component 2, a rotating component 3, an anti-dumping component 4, a mounting component 5 and a temporary storage component 6; the detection component 2 is arranged at the upper end of the support component 1; the rotating component 3 is arranged at the left end of the support component 1; the anti-dumping component 4 for reinforcing the support component 1 is arranged below the support component 1; the mounting component 5 is arranged on the support component 1; the temporary storage component 6 for temporarily storing liquid is arranged on the mounting component 5.

[0024] See also Figure 2In this embodiment, the support assembly 1 includes a carrier plate 101, a first threaded column 102, a pad 103, a protective block 104 and a support leg 105; the first threaded column 102 is installed with through-threads at the four corners of the upper and lower ends of the carrier plate 101; the pad 103 is fixedly connected to the lower end of the first threaded column 102; the support leg 105 is fixedly connected to the four corners of the lower end of the carrier plate 101; the detection assembly 2 includes a sugar content detector 201, a detection slot 202 and a limit groove 203; the upper end of the carrier plate 101 is fixedly connected with a sugar content detector 201; the upper end of the sugar content detector 201 is provided with a detection slot 202; the upper end of the sugar content detector 201 is provided with a circular evenly distributed limiting groove 203; the rotating assembly 3 includes a first L-shaped block 301, a first slot body 302, a rotating column 303, a second L-shaped block 304, a first through hole 305, a movable column 306, a limiting cylinder 307, a screw hole 308, a second threaded column 309, and a pressure plate 3 10 and the first limiting column 311; the left end of the carrier plate 101 is fixedly connected with a first L-shaped block 301; the upper end of the first L-shaped block 301 is provided with a first slot 302; the inner wall of the first slot 302 is movably provided with a rotating column 303; the upper end of the rotating column 303 is fixedly connected with a second L-shaped block 304; the upper and lower ends of the second L-shaped block 304 are penetrated with a first through hole 305; the inner wall of the first through hole 305 is movably provided with a movable column 306; the outer wall of the movable column 306 is fixedly connected with There is a limiting cylinder 307; a screw hole 308 is opened through the movable column 306; the screw hole 308 is located below the limiting cylinder 307; the lower end surface of the limiting cylinder 307 is fitted with the upper end surface of the second L-shaped block 304; the inner wall of the screw hole 308 is threadedly installed with a second threaded column 309; the lower end of the movable column 306 is fixedly connected to a pressure plate 310; the lower end of the pressure plate 310 is fixedly connected to the first limiting columns 311 which are evenly distributed in a circular shape; the first limiting columns 311 are adapted to the limiting groove 203.

[0025] See also Figure 3 In this embodiment, the anti-dumping assembly 4 includes a fixed block 401 and a movable frame 402; the lower end of the supporting plate 101 is fixedly connected to two fixed blocks 401 symmetrical about the center of the lower end surface of the supporting plate 101; the outer wall of the fixed block 401 is movably provided with a movable frame 402.

[0026] See also Figure 4 In this embodiment, the mounting assembly 5 includes a second slot body 501, a mounting block 502, a third slot body 503 and a second limiting column 504; the second slot body 501 is penetrated at both ends of the supporting plate 101; the mounting block 502 is movably provided on the inner wall of the second slot body 501; the third slot body 503 is provided at the upper end of the mounting block 502; the second limiting column 504 is fixedly connected to the bottom surface of the inner wall of the third slot body 503.

[0027] See also Figure 5In this embodiment, the temporary storage component 6 includes a sleeve block 601, a fixing plate 602, a first positioning hole 603, a test tube 604, a slot 605, an insert plate 606, a second positioning hole 607, a positioning column 608, a limiting ring 609, a solid plate 610 and a third positioning hole 611; the outer wall of the second limiting column 504 is sleeved with the sleeve block 601; the front end of the sleeve block 601 is fixedly connected with a uniformly distributed fixing plate 602; the upper and lower ends of the fixing plate 602 are penetrated with uniformly distributed first positioning holes 603; the inner wall of the first positioning hole 603 is movably provided with a test tube 604; the front and rear ends of the fixing plate 602 are penetrated with slots 605; the interior of the slot 605 and the first positioning hole 611 are connected to each other. 03 are interconnected; an insert plate 606 is movably provided on the inner wall of the slot 605; a second positioning hole 607 is penetrated at the upper and lower ends of the insert plate 606; a positioning column 608 is movably provided on the inner wall of the second positioning hole 607; a limiting ring 609 is fixedly connected to the outer wall of the upper end of the positioning column 608; the lower end face of the limiting ring 609 is fitted with the upper end face of the uppermost insert plate 606; a solid plate 610 is fixedly connected to the lower front end of the sleeve block 601; a third positioning hole 611 is penetrated at the upper and lower ends of the solid plate 610; the inner wall of the third positioning hole 611 is flush with the inner wall of the second positioning hole 607; the lower end of the positioning column 608 penetrates the third positioning hole 611 and extends to the bottom of the solid plate 610.

[0028] When working, first, manually rotate the first threaded column 102 to make it move up and down on the carrier plate 101, so as to facilitate the adjustment of the height of the pad 103. The device is supported by the pad 103 and the supporting legs 105 to improve the stability of the device. The movable frame 402 is placed on the outer wall of the fixed block 401 so that the lower end of the movable frame 402 is in contact with the ground. Since the movable frame 402 has a certain weight, the stability of the carrier plate 101 when placed can be improved.

[0029] Next, the mounting block 502 is inserted into the inner wall of the second slot 501, the inserting plate 606 is placed on the inner wall of the slot 605, and the test tube 604 is placed on the inner wall of the first positioning hole 603, so that the upper end of the inserting plate 606 supports the test tube 604, and then the positioning column 608 is passed through the plurality of second positioning holes 607 and a third positioning hole 611 from top to bottom, so that the lower end surface of the limiting ring 609 and the upper end surface of the uppermost inserting plate 606 are fitted, so that the inserting plate 606 can be stably placed, thereby improving the stability of the test tube 604 when placed, and facilitating the taking of the test tube 604;

[0030] Afterwards, the first limiting column 311 is placed on the inner wall of the limiting groove 203, so that the pressure plate 310 can be quickly and stably placed on the upper end of the sugar content detector 201. When the pressure plate 310 needs to be removed, the second threaded column 309 is first removed from the inner wall of the screw hole 308, and then the movable column 306 is manually lifted upward so that the screw hole 308 is lifted above the top surface of the second L-shaped block 304, and then the second threaded column 309 is threadedly installed on the inner wall of the screw hole 308, and the second threaded column 309 can be used to block the upper end of the second L-shaped block 304 to fix the pressure plate 310 at a certain height, and then the second L-shaped block 304 is manually rotated to make the rotating column 303 rotate along the inner wall of the first slot body 302, so that the pressure plate 310 can be easily removed from the first slot body 302, and finally, the liquid is placed in the detection slot 202, and the sugar content detector 201 is turned on to detect the liquid.

[0031] Through the above steps, when in use, the liquid is placed on the temporary storage component 6, and then the temporary storage component 6 is positioned, and then the installation component 5 is installed on the support component 1, so that multiple liquids can be quickly and stably stored and stably placed. The anti-dumping component 4 is installed on the support component 1, which can improve the overall stability of the support component 1. The liquid is placed on the detection component 2 for detection. During the detection, the rotating component 3 is rotated to cover the detection component 2, which can prevent impurities from entering the detection component 2, thereby improving the accuracy of the detection, and solving the problem that the sugar content measuring instrument in the prior art usually lacks an anti-drift protection mechanism, making it difficult to achieve stable placement of the container and difficult to improve the overall stability of the sugar content detector.

[0032] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A tea and sauce brewing sugar content detector that prevents deviation, comprising a support assembly (1); characterized in that: The invention also comprises a detection component (2), a rotation component (3), an anti-dumping component (4), a mounting component (5) and a temporary storage component (6); the detection component (2) is arranged at the upper end of the support component (1); the rotation component (3) is arranged at the left end of the support component (1); the anti-dumping component (4) for reinforcing the support component (1) is arranged below the support component (1); the mounting component (5) is arranged on the support component (1); and the temporary storage component (6) for temporarily storing liquid is arranged on the mounting component (5).

2. The anti-deviating sugar content detector for dried tea and sauce brewing according to claim 1, characterized in that: The support assembly (1) comprises a bearing plate (101), a first threaded column (102), a pad (103), a protective block (104) and a support leg (105); the first threaded column (102) is threadedly installed at the four corner edges of the upper and lower ends of the bearing plate (101); the pad (103) is fixedly connected to the lower end of the first threaded column (102); and the support leg (105) is fixedly connected to the four corner edges of the lower end of the bearing plate (101).

3. The anti-deviating sugar content detector for dried tea and sauce brewing according to claim 1, characterized in that: The detection assembly (2) comprises a sugar content detector (201), a detection groove (202) and a limiting groove (203); the upper end of the carrier plate (101) is fixedly connected to the sugar content detector (201); the upper end of the sugar content detector (201) is provided with a detection groove (202); the upper end of the sugar content detector (201) is provided with a circular and evenly distributed limiting groove (203).

4. The anti-deviating sugar content detector for dried tea and sauce brewing according to claim 1, characterized in that: The rotating assembly (3) comprises a first L-shaped block (301), a first groove body (302), a rotating column (303), a second L-shaped block (304), a first through hole (305), a movable column (306), a limiting cylinder (307), a screw hole (308), a second threaded column (309), a pressure plate (310) and a first limiting column (311); the left end of the bearing plate (101) is fixedly connected to the first L-shaped block (301); the upper end of the first L-shaped block (301) is provided with a first groove body (302); the inner wall of the first groove body (302) is movably provided with a rotating column (303); the upper end of the rotating column (303) is fixedly connected to the second L-shaped block (304); the upper and lower ends of the second L-shaped block (304) are penetrated by the opening A first through hole (305) is provided; a movable column (306) is movably provided on the inner wall of the first through hole (305); the outer wall of the movable column (306) is fixedly connected to a limiting cylinder (307); a screw hole (308) is provided through the movable column (306); the screw hole (308) is located below the limiting cylinder (307); the lower end surface of the limiting cylinder (307) is fitted with the upper end surface of the second L-shaped block (304); a second threaded column (309) is threadedly installed on the inner wall of the screw hole (308); a pressure plate (310) is fixedly connected to the lower end of the movable column (306); a first limiting column (311) evenly distributed in a circular shape is fixedly connected to the lower end of the pressure plate (310); the first limiting column (311) and the limiting groove (203) are adapted to each other.

5. The anti-deviating sugar content detector for dried tea and sauce brewing according to claim 1, characterized in that: The anti-dumping assembly (4) comprises a fixed block (401) and a movable frame (402); the lower end of the carrying plate (101) is fixedly connected to two fixed blocks (401) symmetrical about the center of the lower end surface of the carrying plate (101); and the outer wall of the fixed block (401) is movably provided with a movable frame (402).

6. The anti-deviating sugar content detector for dried tea and sauce brewing according to claim 3, characterized in that: The mounting assembly (5) comprises a second slot body (501), a mounting block (502), a third slot body (503) and a second limiting column (504); the second slot body (501) is penetrated through the left and right ends of the bearing plate (101); the mounting block (502) is movably arranged on the inner wall of the second slot body (501); the third slot body (503) is arranged at the upper end of the mounting block (502); and the second limiting column (504) is fixedly connected to the bottom surface of the inner wall of the third slot body (503).

7. The anti-deviating sugar content detector for dried tea and sauce brewing according to claim 1, characterized in that: The temporary storage component (6) comprises a sleeve block (601), a fixing plate (602), a first positioning hole (603), a test tube (604), a slot (605), an insert plate (606), a second positioning hole (607), a positioning column (608), a limiting ring (609), a solid plate (610) and a third positioning hole (611); the sleeve block (601) is sleeved on the outer wall of the second limiting column (504); the front end of the sleeve block (601) is fixedly connected with the fixing plate (602) which is evenly distributed; the upper and lower ends of the fixing plate (602) are penetrated with the first positioning holes (603) which are evenly distributed; the inner wall of the first positioning hole (603) is movably provided with the test tube (604); the front and rear ends of the fixing plate (602) are penetrated with the slot (605); the interior of the slot (605) and the first positioning hole (611) are connected to each other. 03) are interconnected; an insert plate (606) is movably provided on the inner wall of the slot (605); a second positioning hole (607) is penetrated through the upper and lower ends of the insert plate (606); a positioning column (608) is movably provided on the inner wall of the second positioning hole (607); a limit ring (609) is fixedly connected to the outer wall of the upper end of the positioning column (608); the lower end surface of the limit ring (609) is in contact with the upper end surface of the uppermost insert plate (606); a solid plate (610) is fixedly connected to the lower front end of the sleeve block (601); a third positioning hole (611) is penetrated through the upper and lower ends of the solid plate (610); the inner wall of the third positioning hole (611) is flush with the inner wall of the second positioning hole (607); the lower end of the positioning column (608) penetrates the third positioning hole (611) and extends to the bottom of the solid plate (610).

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