Locking structure of crusher screen

Abstract

The utility model discloses a crusher screen locking structure, the crusher comprises a crushing cavity, a screen bracket and a screen, the locking structure comprises an adjusting part and a connecting part, the adjusting part comprises a base arranged on the outer side of the upper part of the screen, a sliding block, an adjusting screw rod and a locking nut, the surface of the base is provided with a sliding chute, the rear side of the base is provided with a rear baffle plate, the sliding block is arranged in the sliding chute, and the connecting part is connected with the adjusting screw rod. A threaded hole is formed in the rear baffle, the adjusting screw penetrates through the threaded hole, the two locking nuts are arranged on the front side and the rear side of the rear baffle respectively and arranged on the adjusting screw in a sleeving mode, and the front end of the adjusting screw is connected with the sliding block. The connecting part comprises a handle seat fixed on the sliding block, a handle hinged on the handle seat, a pull ring hinged on the handle and a hook seat fixed at the top of the screen support, a hook is fixed on the hook seat, the pull ring is connected with the hook, and the lower end of the screen is hinged at the bottom of the screen support. According to the utility model, the pull ring is hooked on the corresponding hook, and the pull ring and the hook are connected and fastened by pressing down the handle, so that the screen is fixed.

Description

Technical Field

[0001] The utility model relates to the field of grinders, in particular to a locking structure for a grinder screen. Background Art

[0002] A pulverizer is a machine that crushes large-sized solid raw materials into the required size. The pulverizer consists of coarse crushing, fine crushing, wind conveying and other devices. The purpose of the pulverizer is achieved in the form of high-speed impact. The external forces applied to the material during the crushing process are rolling, shearing, impact (striking), and grinding. By installing a screen on the pulverizer, the items inside the pulverizer are screened through the screen when they have not reached the crushing size. Those that do not meet the crushing size requirements will continue to be crushed, and those that meet the crushing requirements will be discharged outside the device through the screen. After the screen is installed and fixed, it needs to maintain a certain degree of elasticity. Therefore, an elastic fine-tuning is required after fixing. Existing screens are often fixed by tightening the chain with a ratchet or by pressing the handle with a spring seat.

[0003] like Figure 4 The ratchet is used to tighten the chain for fixing. After the screen is clamped in place, multiple chains are buckled together, and then a special tool is used to rotate the eccentric capstan. However, this fixing method is more troublesome to debug or disassemble, and the chain is prone to breakage after long-term use.

[0004] The handle is held in place by a spring seat, which causes significant spring fatigue and requires frequent replacement. Furthermore, if the spring is not replaced promptly after fatigue, there is a risk of the crusher popping out during operation. Utility Model Content

[0005] Based on this, in order to solve the above problems, the present invention provides a locking structure for a grinder screen.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] The cam is connected to the top of the screen frame, and the cam is connected to the adjusting screw rod and the adjusting screw rod are connected to the adjusting screw rod respectively.

[0008] Using the above technical solution, the lower end of the screen is hinged to the bottom of the screen bracket, a handle seat is provided on the upper outer side of the screen, and the handle is hinged on the handle seat. During assembly, the handle seat is used as the rotation center to drive the handle to rotate, and the pull ring is driven to rotate, so that the pull ring can be used to connect with the hook on the hook seat. By tightening the adjusting screw, the slider is driven to move, and the handle seat and the pull ring are driven to move synchronously, so that the tensioning force can be contracted more conveniently, thereby realizing the compression and fixation of the screen.

[0009] In a specific implementation manner of the present utility model: the pull ring is installed on the handle through a rotating shaft, and a tightness adjusting mechanism for adjusting the tightness of the pull ring is provided on the rotating shaft.

[0010] In a specific embodiment of the present invention, the tension adjustment mechanism includes a first adjustment nut and a second adjustment nut mounted on a pull ring. The pull ring extends through a through-hole formed in the rotating shaft. The first and second adjustment nuts are threadedly connected to the pull ring, and the rotating shaft is located between the first and second adjustment nuts. Using this technical solution, the tension of the pull ring can be adjusted by synchronously moving the first and second adjustment nuts.

[0011] In a specific implementation manner of the present utility model: a safety nut is sleeved on the pull ring and is located outside the second adjusting nut.

[0012] In a specific implementation manner of the present utility model: the pull ring is a rectangular frame structure.

[0013] In summary, in the present invention, the lower end of the screen is hinged to the bottom of the screen bracket, a handle seat is provided on the upper outer surface of the screen, a handle is hinged on the handle seat, a pull ring is hooked on a corresponding hook, and the handle is pressed down to connect and tighten the pull ring to the hook. By tightening the adjustment screw, the slider is driven to move, and the handle seat and the pull ring are driven to move synchronously, so that the tensioning force is more conveniently contracted, thereby achieving the compression and fixation of the screen, and the operation is convenient. The pull ring can be adjusted to be loose and tight by the synchronous movement of the first adjustment nut and the second adjustment nut, thereby enhancing the locking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a structural diagram of a locking structure of a grinder screen of the utility model;

[0016] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 It is a structural diagram of the adjustment part of the utility model;

[0018] Figure 4 The figure shows the use of a ratchet to tighten the chain to fix the screen. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only 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 making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1 and Figure 2 As shown, the present invention provides a locking structure for a grinder screen. The grinder 9 includes a grinding chamber 8, a screen support 7 disposed within the grinding chamber 8, and screens 6 disposed on either side of the screen support 7. In this embodiment, the screens 6 each have an arcuate surface. The two screens 6 are secured to the screen support 7 via a locking structure. The locking structure includes a connecting portion and an adjusting portion.

[0021] like Figure 2 and Figure 3As shown, the adjustment part includes a base 20, a slider 21, an adjustment screw 22 and a locking nut 23. There are three bases 20, which are fixed on the upper part of the screen 6 at intervals along the axial direction. Each base 20 has side baffles 203 on the left and right sides of the upper surface, and a rear baffle 202 on the rear side. A slide 201 is formed between the two side baffles 203, and both sides of the bottom of the slide 201 have guide positioning grooves 203. The slider 21 is arranged in the slide 201, and the left and right sides of the slider 21 have protrusions 204 that extend into the guide positioning grooves 203 respectively. A threaded hole is opened on the rear baffle 202, and the adjustment screw 22 passes through the threaded hole. Two adjustment screws 22 are arranged on the front and rear sides of the rear baffle 202 and are sleeved on the adjustment screw 22. The front end of the adjustment screw extends forward and is connected to the slider. By adopting the above technical solution, the slider is driven to move by tightening the adjusting screw, and the handle seat and the pull ring are driven to move synchronously, so that the tensioning force can be contracted more conveniently. The adjusting screw is clamped and fixed by the cooperation of two locking nuts to ensure that the subsequent adjusting screw will not loosen due to material impact and vibration.

[0022] The connecting part includes three handle seats 10. Each handle seat 10 is fixed to the corresponding slider 21 by a screw. A handle 11 is provided on each handle seat 10. The front end of each handle is hinged to the handle seat 10 by an axis. A pull ring 13 is hinged to the inner side of the middle of each handle 11 through a rotating shaft 12. The pull ring 13 is a rectangular frame structure. Hook seats 14 are fixed on the top of the screen bracket 7, the number and position of which correspond to the handle seats 10. A hook 15 that matches the pull ring 13 is fixed on each hook seat 14. The lower end of the screen is hinged to the bottom of the screen bracket 7 by a hinge. In this way, the pull ring is hooked on the corresponding hook, and the pull ring is connected and tightened to the hook by pressing down the handle, thereby fixing the screen.

[0023] In this embodiment, a tension adjustment mechanism for adjusting the tightness of the pull ring 13 is provided on the rotating shaft 12 .

[0024] The tension adjustment mechanism includes a first adjustment nut 16 and a second adjustment nut 17 mounted on the pull ring. A through-hole 121 is formed at each end of the rotating shaft 12. The ends of the pull ring 13 extend through the through-holes provided on the rotating shaft, allowing the ends of the pull ring 13 to move on the rotating shaft 12. The first and second adjustment nuts 16, 17 are threadedly connected to the pull ring 13, with the rotating shaft 12 positioned between them. This synchronized movement of the first and second adjustment nuts allows the tension of the pull ring to be adjusted, thereby enhancing the locking effect.

[0025] A safety nut 18 is also provided on the pull ring 13. The safety nut is located outside the second adjusting nut 17.

[0026] In summary, in the present invention, the lower end of the screen is hinged to the bottom of the screen bracket, a handle seat is provided on the upper outer surface of the screen, a handle is hinged on the handle seat, a pull ring is hooked on a corresponding hook, and the handle is pressed down to connect and tighten the pull ring to the hook. By tightening the adjustment screw, the slider is driven to move, and the handle seat and the pull ring are driven to move synchronously, so that the tensioning force is more conveniently contracted, thereby achieving the compression and fixation of the screen, and the operation is convenient. The pull ring can be adjusted to be loose and tight by the synchronous movement of the first adjustment nut and the second adjustment nut, thereby enhancing the locking effect.

[0027] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A locking structure for a grinder screen, the grinder comprising a grinding chamber, a screen support disposed in the grinding chamber, and screens disposed on both sides of the screen support, characterized in that: The locking structure includes an adjusting part and a connecting part, and the adjusting part includes a base, a slider, an adjusting screw and a locking nut arranged on the outer side of the upper part of the screen, the left and right sides of the upper surface of the base are provided with side baffles forming a slide groove, and the rear side is provided with a rear baffle, and both sides of the bottom of the slide groove are provided with guide positioning grooves, the slider is arranged in the slide groove, and the left and right sides have protrusions that extend into the guide positioning grooves respectively, the rear baffle is provided with a threaded hole, the adjusting screw passes through the threaded hole, and two locking nuts are respectively arranged on the front and rear sides of the rear baffle and are sleeved on the adjusting screw, the front end of the adjusting screw is connected to the slider, and the connecting part includes a handle seat fixed on the slider, a handle hinged on the handle seat, a pull ring hinged on the handle and a hook seat fixed on the top of the screen bracket, a hook is fixed on the hook seat, the pull ring is connected to the hook, and the lower end of the screen is hinged to the bottom of the screen bracket.

2. The locking structure of the grinder screen according to claim 1, characterized in that: The pull ring is mounted on the handle via a rotating shaft, and a tightness adjusting mechanism for adjusting the tightness of the pull ring is provided on the rotating shaft.

3. The locking structure of the grinder screen according to claim 2, characterized in that: The tension adjustment mechanism includes a first adjusting nut and a second adjusting nut arranged on the pull ring. A through hole is opened on the rotating shaft, and the pull ring passes through the through hole. The first adjusting nut and the second adjusting nut are both threadedly connected to the pull ring, and the rotating shaft is located between the first adjusting nut and the second adjusting nut.

4. The locking structure of the crusher screen according to claim 3, characterized in that: A safety nut is sleeved on the pull ring and is located outside the second adjusting nut.

5. The locking structure of the grinder screen according to claim 4, characterized in that: The pull ring is a rectangular frame structure.

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