CN222446298U - Stirring device convenient to clean - Google Patents

Abstract

The utility model discloses a stirring device convenient to clean, which relates to the technical field of fried chicken sauce processing and stirring, and comprises a base, support legs are fixedly mounted at four corners of the top of the base, and a top seat is fixedly mounted at the top of each support leg. According to the utility model, the structure is adopted, the telescopic cylinder drives the stirring auger to be inserted into the stirring tank, the sealing effect of the first top cover is matched, the fried chicken sauce is ensured to be uniformly mixed, the fried chicken sauce is conveniently discharged through the discharging electromagnetic valve and the discharging pipe, when the fried chicken sauce is cleaned, the telescopic cylinder and the first motor work cooperatively, the cleaning mechanism is inserted into the stirring tank, the stirring auger is exposed outside, the stirring tank and the stirring auger are convenient to clean at the same time, in addition, the design of the feed hopper and the feed pipe is convenient for adding fried chicken sauce or cleaning liquid, and the sealing in the stirring process is realized through the sealing plug.

Description

Stirring device convenient to clean

Technical Field

The utility model belongs to the technical field of fried chicken sauce processing and stirring, and particularly relates to a stirring device convenient to clean.

Background

The stirring processing of the fried chicken sauce plays a vital role in the fried chicken making process, the process ensures the full fusion of various seasonings, so that the taste and flavor of the fried chicken sauce reach the optimal state, each part of fried chicken sauce meets the specific taste requirement by precisely controlling the proportion of various raw materials, the mixing and stirring of the raw materials are helpful for releasing and fusing the flavor and taste of various food materials in the stirring processing process, so that the salivating fried chicken sauce is created, in addition, the proper stirring processing can ensure the uniform texture of the fried chicken sauce, so that the fried chicken sauce is smoother when being smeared or dipped, and the eating experience is improved, therefore, the stirring processing of the fried chicken sauce is an important ring for ensuring the delicious taste of the fried chicken sauce;

The Chinese patent with publication number of CN205868120U discloses a stirrer convenient to clean, which comprises an inner layer and an outer layer, wherein stirring blades are arranged on the inner layer of a charging barrel, a plurality of spraying holes are formed in the wall of the inner layer of the charging barrel, a spray head is arranged on the outer layer of the charging barrel, the spray heads are respectively arranged in the spraying holes, the front ends of the spray heads are on the same horizontal plane with the wall of the inner layer of the charging barrel, the rear ends of the spray heads are connected with a water main through water pipes, the water main is connected with a high-pressure water pipe outside the charging barrel, a bin gate is arranged at the front ends of the spray heads, a liquid level relay is arranged in the water pipe connected with the spray heads and communicated with the bin gate and used for controlling the bin gate to be opened and closed, and a control valve is arranged on the water main. According to the utility model, the cleaning device is arranged in the stirrer, so that manual cleaning is not needed, and the stirrer can automatically flush in multiple directions, so that the cleaning effect can be effectively improved, and the manpower is saved.

The device is in the use period, although it can assist to stir and mix, adopts the shower nozzle to assist in cleaning in its use, however in its use, the inside of whole agitator tank is in closed state, and it is obviously inconvenient to open and carries out accurate cleanness, and whole cleaning ability is relatively poor, and the screw twist form sets up in its cleaning process, and the surface of screw also very easily adheres to impurity rubbish, and the screw also needs to clean, and it is comparatively loaded down with trivial details inconvenient to see its whole cleanness, consequently needs to improve it.

Disclosure of utility model

Aiming at the problems in the background art, the utility model aims to provide a stirring device convenient to clean, so as to solve the problem that the whole cleaning of the existing equipment is complicated and inconvenient.

The technical aim of the utility model is realized by the following technical scheme:

The utility model provides a convenient abluent agitating unit, includes the base, four equal fixed mounting in corner in top of base have the supporting leg, the top fixed mounting of supporting leg has the footstock, the top fixed mounting of footstock has the agitator tank, the bottom fixed mounting of agitator tank has the row hopper, the bottom fixed mounting of row hopper has row material solenoid valve, the input of row material solenoid valve is linked together with the row hopper of agitator tank bottom, the output fixed mounting of row material solenoid valve has row material pipe, the top rear side middle part fixed mounting of footstock has actuating mechanism, actuating mechanism's top one side fixed mounting has rabbling mechanism, actuating mechanism's top opposite side fixed mounting has clearance mechanism.

As the preferable technical scheme, actuating mechanism includes the fixed plate, fixed plate fixed mounting is in the rear side middle part of footstock, the bottom fixed mounting of fixed plate has first motor, the output of first motor runs through fixed plate fixed mounting has the carousel, the top fixed mounting of carousel has flexible cylinder, the top fixed mounting of flexible cylinder has two sets of link, the outer end and the clearance mechanism fixed connection of one link, the outside and the rabbling mechanism fixed connection of another link.

As the preferable technical scheme, rabbling mechanism includes first top cap, first top cap fixed mounting is in the outer end of a link, the top fixed mounting of first top cap has the second motor, the output of second motor runs through first top cap fixed mounting has the (mixing) shaft, the lower extreme fixed mounting of (mixing) shaft has the stirring auger.

As the preferable technical scheme, the outside of (mixing) shaft is located the equidistant fixed mounting of upper end of stirring auger and has the puddler, the whole cross-section shape of puddler is diamond.

As the preferable technical scheme, the cleaning mechanism comprises a second top cover, the second top cover is fixedly arranged at the outer end of the other connecting frame, a third motor is fixedly arranged at the top of the second top cover, a rotating shaft penetrates through the second top cover and is fixedly arranged at the output end of the third motor, and a cleaning assembly is fixedly arranged at the outer side of the rotating shaft.

As the preferable technical scheme, the top of first top cap and second top cap is all fixed mounting has the inlet pipe, the top fixed mounting of inlet pipe has the feeder hopper, the bottom of inlet pipe runs through first top cap and second top cap.

As the preferred technical scheme, the clearance subassembly includes the connecting rod, the side shape of connecting rod is L shape setting, the spout has all been seted up to the outside lower extreme of connecting rod, the inboard sliding connection of spout has the slide bar, the outside fixed mounting of slide bar has the brush board, the upper end threaded connection of connecting rod has hand formula screw rod, the tip of hand formula screw rod runs through the connecting rod, spacing hole has been seted up to the inboard upper end of slide bar, the tip of hand formula screw rod is pegged graft in the inboard of spacing hole.

In summary, the utility model has the following advantages:

Firstly, in the stirring process, the telescopic cylinder drives the stirring auger to be inserted into the stirring tank and is matched with the sealing effect of the first top cover, so that even mixing of fried chicken sauce is ensured, after stirring is finished, the fried chicken sauce is conveniently discharged through the discharging electromagnetic valve and the discharging pipe, when the fried chicken sauce is cleaned, the telescopic cylinder and the first motor work cooperatively, the cleaning mechanism is inserted into the stirring tank, and meanwhile, the stirring auger is exposed outside, so that the stirring tank and the stirring auger are cleaned conveniently, in addition, the design of the feed hopper and the feed pipe is convenient for adding fried chicken sauce or cleaning liquid, and sealing in the stirring process is realized through the sealing plug;

Second, this equipment has realized the inside high-efficient clearance of agitator tank through being equipped with clearance mechanism, when the second top cap covers in the agitator tank top, clearance mechanism's pivot and brush board can insert inside the agitator tank, rotate through third motor drive pivot, and then drive the brush board and brush the clearance of rubbing the agitator tank inner wall, at the clearance in-process, the accessible feeder hopper adds the washing liquid, brush board rotates and cooperates with the washing liquid, can further promote clean effect, after the clearance is accomplished, through adjustment rabbling mechanism and clearance mechanism's position, can conveniently take out and change the brush board, realize the quick maintenance and the maintenance of equipment, this design is showing and is improving clean efficiency and the convenience of equipment, the cleanliness of agitator tank has been ensured, convenience of customers uses.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of the bottom construction of the present utility model;

FIG. 3 is a schematic view of the cleaning mechanism and stirring structure of the present utility model;

FIG. 4 is a schematic view of the cleaning assembly of the present utility model.

Reference numeral 1, a base; 2, supporting legs, 3, a top seat, 4, a stirring tank, 5, a discharging hopper, 6, a discharging electromagnetic valve, 7, a stirring mechanism, 71, a first top cover, 72, a second motor, 73, a stirring shaft, 74, a stirring auger, 75, a stirring rod, 8, a driving mechanism, 81, a fixed plate, 82, a first motor, 83, a turntable, 84, a telescopic cylinder, 85, a connecting frame, 9, a cleaning mechanism, 91, a second top cover, 92, a third motor, 93, a rotating shaft, 94, a feeding pipe, 95, a feeding hopper, 96, a cleaning component, 961, a connecting rod, 962, a chute, 963, a sliding rod, 964, a brush plate, 965, a hand-screwed screw, 966, a limiting hole and 10, a discharging pipe.

Detailed Description

Examples

Referring to fig. 1 to 4, a stirring device convenient to clean in this embodiment comprises a base 1, supporting legs 2 are fixedly installed at all four corners of the top of the base 1, a footstock 3 is fixedly installed at the top of the supporting legs 2, a stirring tank 4 is fixedly installed at the top of the footstock 3, a discharging hopper 5 is fixedly installed at the bottom of the stirring tank 4, a discharging electromagnetic valve 6 is fixedly installed at the bottom of the discharging hopper 5, an input end of the discharging electromagnetic valve 6 is communicated with the discharging hopper 5 at the bottom of the stirring tank 4, a discharging pipe 10 is fixedly installed at the output end of the discharging electromagnetic valve 6, a driving mechanism 8 is fixedly installed at the middle part of the top rear side of the footstock 3, a stirring mechanism 7 is fixedly installed at one side of the top of the driving mechanism 8, a cleaning mechanism 9 is fixedly installed at the other side of the top of the driving mechanism 8, the bottom of the stirring tank 4 is provided with the discharging hopper 5 for smoothly discharging stirred materials, a discharging electromagnetic valve 6 is arranged below the discharging hopper 5, the input end of the discharging electromagnetic valve is directly communicated with the discharging hopper 5 at the bottom of the stirring tank 4, discharging electromagnetic valve 6 can be accurately controlled by controlling a switch, the output end of the discharging electromagnetic valve 6 is connected with the discharging pipe 10, a guide mechanism 10 is fixedly installed at the other side of the top of the driving mechanism 8, and a cleaning mechanism 7 is completely cleaned by the cleaning mechanism is installed at the other side of the top side of the stirring mechanism 9, and the cleaning mechanism is well-cleaned, and the whole device is well has a well-cleaned, and well-cleaned.

Referring to fig. 2, the driving mechanism 8 includes a fixing plate 81, the fixing plate 81 is fixedly installed at the middle part of the rear side of the top seat 3, a first motor 82 is fixedly installed at the bottom of the fixing plate 81, a rotary table 83 is fixedly installed at the output end of the first motor 82, a telescopic cylinder 84 is fixedly installed at the top of the rotary table 83, two groups of connecting frames 85 are fixedly installed at the top of the telescopic cylinder 84, the outer end of one connecting frame 85 is fixedly connected with the cleaning mechanism 9, the outer side of the other connecting frame 85 is fixedly connected with the stirring mechanism 7, the driving mechanism 8 is composed of the fixing plate 81, the first motor 82, the rotary table 83, the telescopic cylinder 84 and two groups of connecting frames 85, the fixing plate 81 is fixedly installed at the middle part of the rear side of the top seat 3, the first motor 82 is fixed at the bottom of the fixing plate 81, the output end of the first motor 82 penetrates through the fixing plate 81 and is connected with the rotary table 83, a telescopic cylinder 84 is installed at the top of the rotary table 83, two groups of connecting frames 85 are fixedly connected with the cleaning mechanism 9 at the top of the telescopic cylinder 84, the outer end of one connecting frame 85 is fixedly connected with the cleaning mechanism 9, the outer side of the other connecting frame 85 is fixedly connected with the stirring mechanism 7, and the stirring mechanism 7 is fixedly connected with the outer side of the other connecting frame 7, and the stirring mechanism 7 is required to be conveniently cleaned by the cleaning mechanism, the cleaning mechanism is conveniently and flexibly adjusted by the stirring mechanism is required to be lowered to the cleaning mechanism 7.

Referring to fig. 3, the stirring mechanism 7 includes a first top cover 71, the first top cover 71 is fixedly installed at the outer end of a connecting frame 85, a second motor 72 is fixedly installed at the top of the first top cover 71, a stirring shaft 73 is fixedly installed at the output end of the second motor 72 penetrating through the first top cover 71, a stirring auger 74 is fixedly installed at the lower end of the stirring shaft 73, the first top cover 71 is fixedly installed at the outer end of the connecting frame 85, which is used as the upper support of the stirring mechanism 7, and simultaneously ensures the sealing performance of the stirring tank 4 during stirring, a second motor 72 is fixedly installed at the top of the first top cover 71, which is a power source of the stirring mechanism 7, the output end of the second motor 72 penetrates through the first top cover 71 and is tightly connected with the stirring shaft 73, when the second motor 72 is started, the stirring shaft 73 can be driven to rotate in the stirring tank 4, the stirring auger 74 is fixedly arranged at the lower end of the stirring shaft 73, the stirring auger 74 is a key stirring element, materials in the stirring tank 4 can be efficiently stirred along with the rotation of the stirring shaft 73, the uniform mixing of the materials is ensured, the stirring mechanism 7 can fully utilize the power of the second motor 72 through the design, the uniform stirring of the materials is realized through the rotation of the stirring shaft 73 and the stirring action of the stirring auger 74, meanwhile, the sealing performance of the stirring tank 4 is ensured due to the existence of the first top cover 71, the splashing or pollution of the materials in the stirring process is avoided, and the whole stirring mechanism 7 is simple in structure and powerful in function, and provides powerful guarantee for the efficient operation of the stirring device.

Referring to fig. 3, the stirring rod 75 is fixedly installed at the upper end of the stirring auger 74 at equal intervals on the outer side of the stirring shaft 73, the stirring contact area of the stirring rod 75 is increased, the stirring uniformity and efficiency are also improved, it is worth noting that the stirring rod 75 is diamond in overall cross section, the stirring rod 75 is enabled to bear larger stirring force and can be better contacted with materials, the stirring effect is improved, meanwhile, the stirring rod 75 can be better adapted to the flow of the materials in the stirring process, the resistance is reduced, the stirring efficiency is improved, and the optimized stirring mechanism 7 is designed, so that the stirring device is more efficient and uniform in the stirring process, and meanwhile, the durability and the service life of equipment can be further improved, the cost of maintenance and replacement are reduced due to the fact that the stirring rod 75 is diamond in cross section.

Referring to fig. 3, the cleaning mechanism 9 includes a second top cover 91, the second top cover 91 is fixedly mounted at the outer end of another connecting frame 85, a third motor 92 is fixedly mounted at the top of the second top cover 91, a rotating shaft 93 is fixedly mounted at the output end of the third motor 92 penetrating through the second top cover 91, a cleaning component 96 is fixedly mounted at the outer side of the rotating shaft 93, the third motor 92 is fixedly mounted at the top of the second top cover 91, the output end of the third motor 92 penetrates through the second top cover 91 and is tightly connected with the rotating shaft 93, when the third motor 92 is started, the rotating shaft 93 is driven to rotate in the stirring tank 4, a cleaning component 96 is fixedly mounted at the outer side of the rotating shaft 93, which is a key part of cleaning work, along with the rotation of the rotating shaft 93, the cleaning component 96 can clean the inner wall of the stirring tank 4 in an omnibearing manner, the cleaning component 96 is ensured, and the design of the cleaning component 96 can be customized according to specific cleaning requirements, such as using different materials and structures of bristles, scrapers and the like, so as to adapt to different stirring materials and stirring tank 4 materials.

Referring to fig. 3, the top of the first top cover 71 and the second top cover 91 are fixedly provided with a feeding pipe 94, the top of the feeding pipe 94 is fixedly provided with a feeding hopper 95, the bottom of the feeding pipe 94 penetrates through the first top cover 71 and the second top cover 91, the top of the feeding pipe 94 is fixedly provided with the feeding hopper 95, the feeding pipe is smooth when materials are added, splashing or blockage is not easy to occur, the shape and the size of the feeding hopper 95 can be adjusted according to actual needs so as to adapt to the addition of different materials, the bottom of the feeding pipe 94 penetrates through the first top cover 71 and the second top cover 91 and is directly communicated with the inside of the stirring tank 4, the feeding pipe 94 ensures that the materials can directly and quickly enter the stirring tank 4, stirring efficiency is improved, meanwhile, in the cleaning process, a user can also add cleaning liquid into the stirring tank 4 through the feeding pipe 94 to assist in cleaning work, in order to ensure the sealing performance in the stirring or the cleaning process, sealing elements such as rubber sealing rings can be arranged at the joint of the feeding pipe 94 and the first top cover 71 and the second top cover 91, the leakage of materials or the cleaning liquid can be effectively prevented, and the safety and sanitation of the stirring and cleaning process can be ensured.

Referring to fig. 3, the clearance subassembly 96 includes connecting rod 961, the side shape of connecting rod 961 is L shape setting, the spout 962 has all been seted up to the outside lower extreme of connecting rod 961, the inboard sliding connection of spout 962 has slide bar 963, slide bar 963's outside fixed mounting has brush plate 964, connecting rod 961's upper end threaded connection has hand formula screw rod 965, hand formula screw rod 965's tip runs through connecting rod 961, spacing hole 966 has been seted up to slide bar 963's inboard upper end, hand formula screw rod 965's tip grafting is in spacing hole 966's inboard, the side shape of connecting rod 961 is L shape setting, such design makes clearance subassembly 96 can adapt to agitator tank 4's inner structure better, simultaneously also for the installation of spout 962 and slide bar 963 has provided convenience, slide bar 963's outside lower extreme has all been seted up the spout 962, the inboard sliding connection of spout 962 has slide bar 963, the position of adjusting brush plate 964 in slide bar 963 can freely slide in slide bar 962, thereby the position of adaptation agitator tank 964 or different sizes, spacing hole 966 can be realized through the fixed position of the fixed connection of slide bar 963 in the inside end of slide bar 963, can be through the fixed position of the fixed connection rod 965 in order to make the inside end of the fixed connection of slide bar 966, thereby very easy to make the inside end of the connecting rod 963 can be very easy to implement the fixed position of the end of the connecting rod 965, and the inside of the end is very easy to be convenient to implement in the end of the end plate 963.

The use principle and the advantages are that: through setting up the rabbling mechanism 7 for this device is during the use, the accessible starts flexible cylinder 84 operation, can drive link 85 through flexible cylinder 84 operation and drive stirring auger 74 and insert the inside of agitator tank 4, this moment first top cap 71 seals in the top of agitator tank 4, through starting stirring auger 74 auxiliary operation, can stir the inside of agitator tank 4 and mix, after this device stirring mixes, the accessible is opened row material solenoid valve 6, can be discharged the fried chicken sauce during stirring through row material pipe 10, make this device whole can stir and mix from top to bottom, can promote the comparatively even mixing deployment of fried chicken sauce, and after the whole stirring of device is mixed, accessible starts flexible cylinder 84 and drives second top cap 91 and first top cap 71 and move up, at this time, the first motor 82 is started to drive the turntable 83 to rotate, the turntable 83 rotates to rotate the cleaning mechanism 9 and the stirring mechanism 7, so that the cleaning mechanism 9 is inserted into the stirring tank 4, the stirring auger 74 of the stirring mechanism 7 is exposed outside, at this time, on one hand, the cleaning mechanism 9 can be started to clean the inside of the stirring tank 4, and the stirring auger 74 is positioned outside, so that the stirring auger 74 can be cleaned, the device can be cleaned more uniformly and stably, the overall cleaning efficiency and thoroughness of the device can be improved, in addition, the feeding hopper 95 and the feeding pipe 94 are arranged in the using process, the fried chicken sauce or cleaning liquid required to be added can be assisted, and in the stirring process of the fried chicken sauce, the feeding hopper 95 can be sealed in a sealing manner by inserting a sealing plug so as to play a role of sealing and stirring;

Through setting up clearance mechanism 9 for this equipment is in the use, when second top cap 91 covers in agitator tank 4 top, the pivot 93 and the clearance subassembly 96 of second top cap 91 bottom all insert the inside of agitator tank 4, this moment he is through starting third motor 92 operation, utilize third motor 92 drive pivot 93 to rotate, can assist drive connecting rod 961 and the brush board 964 rotation in outside through pivot 93 rotation, can assist the inside to brush the clearance of rubbing agitator tank 4 through brush board 964 rotation, and add the washing liquid at the feeder hopper 95 at stirring in-process accessible inlet pipe 94 top, the rotation setting cooperation washing liquid of its brush board 964 can play further stirring mixing effect, can improve the holistic cleaning performance of this device, after this device clearance is accomplished, start first motor 82 and flexible cylinder 84 operation, insert the inside of agitator tank 4 again with stirring auger 74, alright loose hand screw 965 breaks away from spacing hole 966 department this moment, alright take out the inside slide bar 962 3 of spout, make this device whole be convenient for change brush board 964, this device can be convenient for, this device can carry out high-efficient convenient use.

Claims (7)

1. A stirring device that is easy to clean, comprising a base (1), characterized in that: support legs (2) are fixedly installed at the four corners of the top of the base (1), a top seat (3) is fixedly installed on the top of the support legs (2), a stirring tank (4) is fixedly installed on the top of the top seat (3), a discharge hopper (5) is fixedly installed at the bottom of the stirring tank (4), a discharge solenoid valve (6) is fixedly installed at the bottom of the discharge hopper (5), an input end of the discharge solenoid valve (6) is connected to the discharge hopper (5) at the bottom of the stirring tank (4), a discharge pipe (10) is fixedly installed at the output end of the discharge solenoid valve (6), a driving mechanism (8) is fixedly installed in the middle of the top rear side of the top seat (3), a stirring mechanism (7) is fixedly installed on one side of the top of the driving mechanism (8), and a cleaning mechanism (9) is fixedly installed on the other side of the top of the driving mechanism (8). 2. A stirring device that is easy to clean according to claim 1, characterized in that: the driving mechanism (8) includes a fixed plate (81), the fixed plate (81) is fixedly installed on the middle part of the rear side of the top seat (3), a first motor (82) is fixedly installed at the bottom of the fixed plate (81), the output end of the first motor (82) passes through the fixed plate (81) and is fixedly installed with a turntable (83), a telescopic cylinder (84) is fixedly installed on the top of the turntable (83), two groups of connecting frames (85) are fixedly installed on the top of the telescopic cylinder (84), the outer end of one connecting frame (85) is fixedly connected to the cleaning mechanism (9), and the outer side of the other connecting frame (85) is fixedly connected to the stirring mechanism (7). 3. A stirring device that is easy to clean according to claim 2, characterized in that: the stirring mechanism (7) includes a first top cover (71), the first top cover (71) is fixedly installed on the outer end of a connecting frame (85), a second motor (72) is fixedly installed on the top of the first top cover (71), the output end of the second motor (72) passes through the first top cover (71) and is fixedly installed with a stirring shaft (73), and a stirring auger (74) is fixedly installed at the lower end of the stirring shaft (73). 4. A stirring device that is easy to clean according to claim 3, characterized in that stirring rods (75) are fixedly installed at equal intervals on the outer side of the stirring shaft (73) at the upper end of the stirring auger (74), and the overall cross-sectional shape of the stirring rods (75) is a diamond shape. 5. A stirring device that is easy to clean according to claim 4, characterized in that: the cleaning mechanism (9) includes a second top cover (91), the second top cover (91) is fixedly mounted on the outer end of another connecting frame (85), a third motor (92) is fixedly mounted on the top of the second top cover (91), the output end of the third motor (92) passes through the second top cover (91) and is fixedly mounted with a rotating shaft (93), and a cleaning component (96) is fixedly mounted on the outer side of the rotating shaft (93). 6. A stirring device that is easy to clean according to claim 5, characterized in that: a feed pipe (94) is fixedly installed on the top of the first top cover (71) and the second top cover (91), a feed hopper (95) is fixedly installed on the top of the feed pipe (94), and the bottom of the feed pipe (94) passes through the first top cover (71) and the second top cover (91). 7. A stirring device that is easy to clean according to claim 6, characterized in that: the cleaning component (96) includes a connecting rod (961), the side shape of the connecting rod (961) is L-shaped, the lower end of the outer side of the connecting rod (961) is provided with a slide groove (962), the inner side of the slide groove (962) is slidably connected with a slide rod (963), the outer side of the slide rod (963) is fixedly installed with a brush plate (964), the upper end of the connecting rod (961) is threadedly connected with a hand-tightening screw rod (965), the end of the hand-tightening screw rod (965) passes through the connecting rod (961), and the upper end of the inner side of the slide rod (963) is provided with a limiting hole (966), and the end of the hand-tightening screw rod (965) is inserted into the inner side of the limiting hole (966).