Electric actuator for water injection valve for lime milk preparation

Abstract

The utility model discloses an electric actuator component of a water injection valve for preparing lime milk, comprising a fan-shaped worm wheel and a worm, the fan-shaped worm wheel is engaged with the worm, the fan-shaped worm wheel and the worm are engaged with teeth at the extreme positions, the side ends of the teeth are fitted and connected with reinforcing teeth, the reinforcing teeth can be engaged with the worm at the extreme positions of the fan-shaped worm wheel and the worm, the reinforcing teeth are positioned and fixedly connected with the side surface of the fan-shaped worm wheel through a positioning component, the utility model increases the engagement margin at the extreme position, that is, increases the number of teeth engaged at the extreme position of the fan-shaped worm wheel, effectively increases the load bearing capacity, and can also maintain a stable meshing state, so that it can withstand a large load and reduce the wear speed of the worm wheel and worm, thereby extending the life of the water injection valve.

Description

Technical field:

[0001] The utility model relates to the technical field of water injection valves, in particular to an electric actuator assembly of a water injection valve for preparing lime milk. Background technology:

[0002] During the production process of the ore dressing plant, the pH value of the ore pulp must be stable within a certain range so that the flotation reagent can maintain sufficient activity and produce a good separation effect; the pH value of the ore pulp after grinding can only be adjusted to an appropriate range to minimize the chemical corrosion of the ore dressing equipment. The most economical way to adjust the pH value of the ore pulp is to add a certain amount of lime milk.

[0003] The water used in the lime milk preparation system is production return water, which is prone to scaling and has high water pressure. The life of the preparation tank injection valve is short (the shortest is 3 days and the longest is one month), which seriously affects the production of the concentrator.

[0004] There are many reasons that affect the short life of the water injection valve. The main one is that the electric actuator is limited by the characteristics of the motor. The motor torque is unstable at low speed, and a worm gear mechanism with a large speed ratio must be used. This mechanism has a mechanical gap. During the switching process, the action of crossing the gap produces an impact. The impact of the impact on the life cannot be slowed down or eliminated by lubrication. Therefore, the impact and grinding suffered by this mechanism are the main reasons affecting the life of the water injection valve.

[0005] like Figure 4 The prior art drawings shown in the drawings show that at the extreme position of the worm gear, the sector worm wheel 1 engages with the worm 2 at the extreme position, and the sector worm wheel 1 has fewer teeth 3 engaged at the extreme position, and bears less load, so the tooth edges are easily broken or worn prematurely. Utility model content:

[0006] Therefore, the utility model provides an electric actuator assembly of a water injection valve for preparing lime milk, so as to overcome the existing problems.

[0007] The utility model is implemented by the following technical solutions:

[0008] The electric actuator of the water injection valve for preparing lime milk includes a fan-shaped worm wheel and a worm, the fan-shaped worm wheel is engaged with the worm, the fan-shaped worm wheel and the worm are engaged with teeth at the extreme position, the side ends of the teeth are fitted with reinforcing teeth, the reinforcing teeth can be engaged with the worm at the extreme position of the fan-shaped worm wheel and the worm, the reinforcing teeth are positioned and fixedly connected to the side surface of the fan-shaped worm wheel through a positioning assembly, the reinforcing teeth and the teeth are set with the same specifications, the positioning assembly includes a positioning plate, the positioning plate is fixed to the bottom of the reinforcing teeth, the positioning plate is fixedly connected to the side surface of the fan-shaped worm wheel through a connecting assembly, the connecting assembly includes a trapezoidal iron block, the trapezoidal iron block is fixed to the side surface of the positioning plate, the trapezoidal iron block can be fitted and inserted into the trapezoidal positioning groove, the trapezoidal positioning groove is fixed with a magnet block, and the trapezoidal positioning groove is fixed on the side surface of the fan-shaped worm wheel.

[0009] Preferably, the connection assembly can be connected by integral casting or welding.

[0010] Preferably, the connection assembly may also adopt a detachable connection method.

[0011] Preferably, the connecting assembly includes a connecting plate, the connecting plate is fixed on the side of the positioning plate, bolts are screwed on the connecting plate, and the bolts can be screwed to the fan-shaped worm gear.

[0012] The advantages of the utility model are as follows: by increasing the engagement margin at the extreme position, that is, increasing the number of meshing teeth at the extreme position of the sector worm gear, the load bearing capacity is effectively increased while maintaining a stable meshing state. This allows the utility model to withstand larger loads while reducing the wear rate of the worm gear, thereby extending the life of the water injection valve. Description of the drawings:

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a structural schematic diagram of embodiment 1 of the connection assembly of the utility model;

[0016] Figure 3 This is a structural schematic diagram of Embodiment 2 of the connection assembly of the utility model;

[0017] Figure 4 It is a schematic diagram of the prior art structure.

[0018] In the figure: sector worm gear 1, worm 2, teeth 3, reinforcing teeth 4, positioning plate 5, trapezoidal iron block 6, magnet block 7, connecting plate 8, bolt 9. Specific implementation method:

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figure 1 As shown, the electric actuator assembly includes a fan-shaped worm wheel 1 and a worm 2, the fan-shaped worm wheel 1 is engaged with the worm 2, a tooth 3 is engaged with the fan-shaped worm wheel 1 at the extreme position of the worm 2, and a reinforcing tooth 4 is attached to the side end of the tooth 3, and the reinforcing tooth 4 can be engaged with the worm 2 at the extreme position of the fan-shaped worm wheel 1 and the worm 2, and a positioning plate 5 is fixedly connected to the bottom of the reinforcing tooth 4, and the positioning plate 5 is fixedly connected to the side of the fan-shaped worm wheel 1 through a connecting assembly.

[0021] The connection components can be connected by integral casting or welding.

[0022] During use, when the water injection valve is started and stopped, the electric actuator cooperates to perform corresponding actions, and the fan-shaped worm wheel 1 and the worm 2 rotate to the extreme position. Because the reinforcing teeth 4 can bite into the worm 2 at the extreme position of the fan-shaped worm wheel 1 and the worm 2, this can effectively increase the bite margin of the fan-shaped worm wheel 1 and the worm 2 at the extreme position and increase the load-bearing capacity.

[0023] The connection component can also adopt a detachable connection mode.

[0024] In embodiment 1, a trapezoidal iron block 6 is fixed on the side of the positioning plate 5, and the trapezoidal iron block 6 can be inserted into the trapezoidal positioning groove, and a magnet block 7 is fixed on the trapezoidal positioning groove, and the trapezoidal positioning groove is fixed on the side of the fan-shaped worm gear 1;

[0025] During use, the trapezoidal iron block 6 is directly inserted into the trapezoidal positioning groove, and the magnet block 7 generates an interaction force with the trapezoidal iron block 6 to achieve the positioning and installation of the reinforcement teeth 4.

[0026] In Embodiment 2, a connecting plate 8 is fixed to the side of the positioning plate 5, a bolt 9 is screwed on the connecting plate 8, and the bolt 9 can be screwed to the fan-shaped worm gear 1;

[0027] During use, the bolts 9 are screwed onto the connecting plate 8 and can be screwed onto the fan-shaped worm gear 1 at the same time, so that the reinforcing teeth 4 can be positioned and installed.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric actuator assembly for a water injection valve for preparing lime milk, comprising a fan-shaped worm gear and a worm, wherein the fan-shaped worm gear is engaged with the worm, and is characterized in that: The fan-shaped worm wheel and the worm are engaged with teeth at the extreme positions, and the side ends of the teeth are fitted with reinforcing teeth. The reinforcing teeth can be engaged with the worm at the extreme positions of the fan-shaped worm wheel and the worm. The reinforcing teeth are positioned and fixedly connected to the side surfaces of the fan-shaped worm wheel through a positioning component. The reinforcing teeth and the teeth are set with the same specifications. The positioning component includes a positioning plate, which is fixed to the bottom of the reinforcing teeth. The positioning plate is fixedly connected to the side surfaces of the fan-shaped worm wheel through a connecting component. The connecting component includes a trapezoidal iron block, which is fixed to the side surfaces of the positioning plate. The trapezoidal iron block can be fitted and inserted into the trapezoidal positioning groove, and a magnet block is fixed to the trapezoidal positioning groove, which is fixed to the side surfaces of the fan-shaped worm wheel.

2. The electric actuator of the water injection valve for preparing lime milk according to claim 1, characterized in that: The connection assembly can be connected by integral casting or welding.

3. The electric actuator of the water injection valve for preparing lime milk according to claim 2, characterized in that: The connection assembly may also be detachably connected.

4. The electric actuator of the water injection valve for preparing lime milk according to claim 3, characterized in that: The connecting assembly comprises a connecting plate, the connecting plate is fixed on the side of the positioning plate, bolts are screwed on the connecting plate, and the bolts can be screwed on the fan-shaped worm gear.

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