Discharging valve structure capable of finely adjusting gap

Abstract

The utility model relates to a discharge valve structure capable of finely adjusting a gap, which comprises a discharge valve shell and an impeller which is rotatably connected in the discharge valve shell to open and close a discharge valve, the impeller comprises a shaft sleeve and impeller plates which are fixedly connected on the shaft sleeve at intervals, the outer ends of the impeller plates are connected with wear-resisting plates and pressing plates through bolts, and the wear-resisting plates are connected with the pressing plates through bolts. The abrasion-resistant plates protrude out of the impeller plate so as to abut against the inner wall of the discharging valve shell, a plurality of adjusting holes used for adjusting the abrasion-resistant plates in a telescopic mode are formed in the abrasion-resistant plates, and bolts sequentially penetrate through the pressing plate, the adjusting holes and the impeller plate to clamp and fix the abrasion-resistant plates. Meanwhile, the discharging valve can be adjusted and used repeatedly, and the service life of the discharging valve is prolonged.

Description

Technical Field

[0001] The utility model relates to a discharging valve structure with fine gap adjustment. Background Art

[0002] The discharging valve is also known as a closed blower, a shut-off blower, and a star-shaped discharging machine. The discharging valve is an important device in the pneumatic conveying and ventilation dust removal network. Its main function is to continuously and timely discharge the materials in the discharger or dust collector, while ensuring that the pressure in the equipment is not exposed to the atmospheric environment. It is widely applicable to the pneumatic conveying of equipment in industries such as rice milling, flour milling, feed, machinery, chemical industry, medicine, tobacco, metallurgy, cement, and dust removal, and the discharging of the pipe network pressure state. However, the existing discharging valve and impeller are integral. During the feeding and discharging processes, it will cause wear of the discharging valve shell and the impeller, which will further lead to an increase in the gap between the discharging valve shell and the impeller, thereby reducing the sealing effect and service life of the discharging valve. Moreover, since the discharging valve shell and the impeller are integral, replacing the discharging valve requires overall replacement, resulting in a large economic investment. At present, some impeller structures on the shut-off blowers have been disclosed. Although they have the effect of reducing the gap, if used for a long time, the gap will increase after the wear-resistant blocks are worn, that is, the wear-resistant blocks still need to be replaced again, and the cost is relatively high. Content of the Utility Model

[0003] In view of the deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a discharging valve structure with fine gap adjustment, which is not only reasonable in structure but also cost-saving.

[0004] To solve the above technical problem, the technical solution of the utility model is: a discharging valve structure with fine gap adjustment, including a discharging valve shell and an impeller rotatably connected in the discharging valve shell to open and close the discharging valve. The impeller includes a shaft sleeve and impeller plates spaced and fixedly connected to the shaft sleeve. Wear-resistant plates and pressing plates are connected to the outer ends of the impeller plates by bolts. The wear-resistant plates protrude from the impeller plates to abut against the inner wall of the discharging valve shell. A plurality of adjustment holes for telescopic adjustment of the wear-resistant plates are formed in the wear-resistant plates, and the wear-resistant plates are clamped by bolts passing through the pressing plates, the adjustment holes, and the impeller plates in sequence.

[0005] Further, a plurality of screw holes are evenly distributed along the length direction of the outer ends of the impeller plates, and through holes corresponding to the screw holes one by one are formed in the pressing plates.

[0006] Further, the adjustment holes are all strip-shaped holes and the extending direction is consistent with the width direction of the wear-resistant plates.

[0007] Further, wheel frame plates are fixedly arranged on both sides of the impeller plate along its length direction. The wheel frame plates are coaxially arranged with the shaft sleeve and fixedly connected together.

[0008] Further, the wear-resistant plates are of the same length as the impeller plates.

[0009] Furthermore, a rotating shaft for driving the rotation is arranged inside the shaft sleeve, and the end of the rotating shaft penetrates through the housing of the discharging valve and is connected to the motor via a speed reducer.

[0010] Furthermore, a feed inlet is provided at the top of the housing of the discharging valve, a discharge outlet is provided at the bottom, and a chamber for installing the impeller is provided inside. Both the feed inlet and the discharge outlet are communicated with the chamber.

[0011] Compared with the prior art, the present utility model has the following beneficial effects: The structure of the discharging valve with finely adjustable clearance effectively ensures the sealing effect, and at the same time, it can be adjusted and used multiple times, prolonging the service life of the discharging valve, effectively saving costs, and being convenient for disassembly and assembly.

[0012] The following further describes the present utility model in detail with reference to the drawings and specific embodiments. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0014] Figure 2 is Figure 1 a cross-sectional view taken along A-A in

[0015] Figure 3 is a schematic structural diagram of the impeller in an embodiment of the present utility model;

[0016] Figure 4 is a schematic structural diagram of the cross-section of the impeller in an embodiment of the present utility model;

[0017] Figure 5 is Figure 4 an enlarged schematic view of B in

[0018] Figure 6 is a schematic structural diagram of the wear-resistant plate in an embodiment of the present utility model;

[0019] Figure 7 is a schematic structural diagram of the pressing plate in an embodiment of the present utility model;

[0020] Figure 8 is a schematic diagram of the use state of an embodiment of the present utility model.

[0021] In the figure: 1 - housing of the discharging valve, 2 - discharging valve, 3 - impeller, 4 - shaft sleeve, 5 - impeller plate, 6 - bolt, 7 - wear-resistant plate, 8 - pressing plate, 9 - adjusting hole, 10 - screw hole, 11 - through hole, 12 - wheel frame plate, 13 - rotating shaft, 14 - speed reducer, 15 - motor, 16 - feed inlet, 17 - discharge outlet, 18 - chamber, 19 - screw conveyor. Detailed Embodiments

[0022] To make the above features and advantages of the present utility model more obvious and understandable, specific embodiments are hereinafter given and detailed descriptions are made in conjunction with the accompanying drawings as follows.

[0023] As Figures 1-8 shown, a discharge valve structure with finely adjustable clearance includes a discharge valve housing 1 and an impeller 3 rotatably connected within the discharge valve housing to open and close the discharge valve 2. The impeller includes a shaft sleeve 4 and impeller plates 5 fixedly connected to the outer periphery of the shaft sleeve at equal angular intervals. The outer ends of the impeller plates are each connected with a wear-resistant plate 7 and a pressing plate 8 through bolts 6. The wear-resistant plates protrude from the impeller plates to abut against the inner wall of the discharge valve housing. A number of adjustment holes 9 for telescopic adjustment of the wear-resistant plates are provided on the wear-resistant plates, and the wear-resistant plates are clamped by sequentially passing bolts through the through holes of the stacked pressing plates, the adjustment holes of the wear-resistant plates, and the impeller plates. The material of the wear-resistant plates is polytetrafluoroethylene, which can not only ensure the sealing performance but also avoid scratching the inner wall of the discharge valve housing.

[0024] In the embodiment of the present utility model, a number of screw holes 10 are evenly distributed along the length direction at the outer ends of the impeller plates, and through holes 11 corresponding to the screw holes one by one are provided on the pressing plates.

[0025] In the embodiment of the present utility model, the adjustment holes are all strip-shaped holes and the extending direction is the same as the width direction of the wear-resistant plates.

[0026] In the embodiment of the present utility model, wheel support plates 12 are fixedly provided on both sides of the impeller plate along its length direction. The wheel support plates are coaxially arranged with the shaft sleeve and fixedly connected together.

[0027] In the embodiment of the present utility model, the wear-resistant plates are of the same length as the impeller plates.

[0028] In the embodiment of the present utility model, a rotating shaft 13 for driving its rotation is arranged within the shaft sleeve. The end of the rotating shaft penetrates through the discharge valve housing and is connected with a speed reducer 14 and a motor 15.

[0029] In the embodiment of the present utility model, a feed inlet 16 is provided at the top of the discharge valve housing, a discharge outlet 17 is provided at the bottom, and a chamber 18 for installing the impeller is provided inside. The feed inlet and the discharge outlet are both communicated with the chamber. The feed inlet is docked with the output port of a screw conveyor 19 to receive materials.

[0030] Working principle of the embodiment of the utility model: First, install each wear-resistant plate and the pressing plate on the impeller plate so that the wear-resistant plates can all abut against the inner wall of the chamber. Then start the motor, and the impeller starts to work. The wear-resistant plates on the impeller plate conduct sealing friction with the inner wall of the discharge valve. By keeping the wear-resistant plates closely attached to the inner wall of the valve body, the sealing performance between the impeller plate and the discharge valve is maintained, and the valve is flipped to open and close for discharging. After long-term use, the wear-resistant plates are worn, increasing the gap between the wear-resistant plates and the inner wall of the discharge valve housing, that is, the sealing performance deteriorates, resulting in problems such as material leakage or inability to discharge due to internal negative pressure. At this time, the bolts can be loosened, and the wear-resistant plates can be finely adjusted outward through the adjustment holes so that the wear-resistant plates abut against the inner wall of the discharge valve housing again, completing the adjustment of the sealing performance, extending the service life of the discharge valve, and also ensuring the sealing and dust removal effect.

[0031] The utility model is not limited to the above best embodiment, and anyone can obtain other various forms of discharge valve structures with finely adjustable gaps under the inspiration of the utility model. All equal changes and modifications made according to the scope of the patent application of the utility model shall fall within the scope covered by the utility model.

Claims

1. The structure of a discharge valve with finely adjustable clearance, characterized in that: It includes a discharge valve housing and an impeller rotatably connected within the discharge valve housing to open and close the discharge valve. The impeller consists of a shaft sleeve and impeller plates fixedly connected to the shaft sleeve at intervals. Wear-resistant plates and pressing plates are bolted to the outer ends of the impeller plates. The wear-resistant plates protrude from the impeller plates to abut against the inner wall of the discharge valve housing. A number of adjustment holes for telescopic adjustment of the wear-resistant plates are provided on the wear-resistant plates, and the wear-resistant plates are clamped by bolts passing through the pressing plates, adjustment holes, and impeller plates in sequence.

2. The structure of the discharge valve with a finely adjustable gap according to claim 1, characterized in that: A number of screw holes are evenly distributed along the length direction at the outer ends of the impeller plates, and through holes corresponding to the screw holes one by one are provided on the pressing plates.

3. The structure of the discharge valve with finely adjustable clearance according to claim 1, characterized in that: The adjustment holes are all strip-shaped holes and the extending direction is the same as the width direction of the wear-resistant plates.

4. The structure of the discharge valve with a finely adjustable gap according to claim 1, characterized in that: Wheel support plates are fixedly provided on both sides of the impeller plate along its length direction. The wheel support plates are coaxially arranged with the shaft sleeve and fixedly connected together.

5. The structure of the discharge valve with finely adjustable clearance according to claim 1, characterized in that: The wear-resistant plates are the same length as the impeller plates.

6. The structure of the discharge valve with finely adjustable clearance according to claim 1, characterized in that: A rotating shaft for driving its rotation is arranged within the shaft sleeve. The end of the rotating shaft penetrates through the discharge valve housing and is connected to a motor through a speed reducer.

7. The structure of the discharge valve with finely adjustable clearance according to claim 1, characterized in that: A feed inlet is provided at the top of the discharge valve housing, a discharge outlet is provided at the bottom, and a chamber for installing the impeller is provided inside. The feed inlet and the discharge outlet are both communicated with the chamber.

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