CN201143711Y - Timber internal micro blasting device - Google Patents

Abstract

A wood internal micro blasting device, the front end cover is used to place wood in the cylinder body, and is fixed on the cylinder body by fastening bolts, and the rear end cover is fixed on the cylinder body by fastening bolts. There is a partition in the cylinder, the partition has a central hole, and there is a quick exhaust hole on the wall of the cylinder. The piston can move in the cylinder and has a damping hole. The front and rear positions are limited by the partition and the rear end cover. The cover has intake and exhaust holes, which are connected with the air compressor and the exhaust valve. The cylinder body is divided into left and right chambers, which are separated by a partition. The left cavity is the working cavity, which is used to pressurize the wood and is in a sealed state when working. The right chamber is a piston cylinder, and the built-in piston is used to open or close the left working chamber, and the working chamber can be filled with high-pressure gas through the damping hole in the center of the piston. Under the condition of maintaining the physical and mechanical properties and appearance of the wood itself, the device improves the permeability of the wood and creates the basic conditions for realizing the high performance and multifunctionality of the wood.

Description

Timber internal micro blasting device

technical field

The utility model relates to a wood internal micro blasting device which fully or partially opens the blocked tissues, cells and pits inside the wood under the condition of maintaining the physical and mechanical properties and appearance of the wood itself, which belongs to wood science and technology field.

Background technique

Wood is composed of tissues and cells with different sizes, shapes and structures, and the communication between them depends on pit pairs. Therefore, the permeability of tissues, cells and pit pairs is the key factor affecting the permeability of wood and wood modification. more crucial factors. In the traditional wood permeability improvement methods, methods such as cold and hot water immersion, boiling, steaming, and organic solvent extraction are usually used to improve wood permeability. As far as the devices used are concerned, the devices are simple and the effect is poor. , the device is complicated and the effect is obvious. The operation process of such complex equipment is generally dangerous, and the investment and operation costs are relatively high. Chinese patent: 97197707.0 relates to a device for rock blasting, which is suitable for open-pit cast iron ore blasting devices; 200510045893.8 relates to a method of detonating by using an electric spark device to store flammable gas in a closed container; 89106544.X relates to A direct conversion of electrical energy into mechanical energy (moisture expansion) is suitable for the construction of various blasting projects and the construction of flammable bodies; 02238058.2 involves a method of using high-pressure liquid medium (pure water) to release instantaneously to blast cell walls, applicable In the process of breaking the wall of Chinese herbal medicine raw materials. Patents applicable to micro-explosive devices inside wood were not found. The utility model relates to the condition of maintaining the physical and mechanical properties of the wood itself and the appearance integrity, through the instantaneous release of high-pressure gas and part of high-pressure water inside the wood, the high-speed airflow rushes out from the inside of the wood to dredge the internal tissue of the wood, Cells and pit pairs can also destroy the structure of pit plugs, thereby fully improving the permeability of wood and creating basic conditions for realizing high-performance and multi-functional wood. This device can also realize the improvement of the permeability of different layers of wood by controlling the change of technological factors.

Contents of the invention

Technical problem: The purpose of this utility model patent is to overcome the shortcomings and deficiencies of the above-mentioned technologies, and provide a special device for internal micro-blasting of wood with small investment, low operating cost, good operability and good effect.

Technical solution: This utility model is mainly composed of cylinder body 2, front end cover 1, rear end cover 7, partition plate 4, piston 6 and other parts. The front end cover is used to place timber in the cylinder body, and is fixed on the cylinder body by fastening bolts, and the rear end cover 7 is fixed on the cylinder body by fastening bolts 3 . There is a partition in the cylinder, the partition has a central hole, and there is a quick exhaust hole on the wall of the cylinder. The piston can move in the cylinder and has a damping hole. The front and rear positions are limited by the partition and the rear end cover. The cover has intake and exhaust holes, which are connected with the air compressor and the exhaust valve.

The cylinder body is divided into left and right chambers, which are separated by a dividing plate 4 . The left cavity is the working cavity, which is used to pressurize the wood and is in a sealed state when working. The right chamber is a piston cylinder, and the built-in piston is used to open or close the left working chamber, and the working chamber can be filled with high-pressure gas through the damping hole in the center of the piston.

The working principle of the device is: in order to realize the internal micro blasting of wood, firstly, high pressure must be generated inside the wood. For this reason, the wood should be placed in a closed container, and high-pressure gas should be filled into the container. After holding the pressure for a certain period of time, the internal pressure of the wood and the gas pressure in the container will reach equilibrium, and the internal pressure of the wood will rise. The container is then opened momentarily, the gas inside is released quickly and the pressure is reduced. The wood completes the micro blasting process under the action of the internal and external pressure difference.

Beneficial effects: the device has good operability, low cost and good blasting effect.

Description of drawings

Figure 1 Structural principle diagram of special device for internal micro-blasting of wood (pressurized state)

Fig. 2 Structural principle diagram of special device for internal micro-blasting of wood (pressure relief state)

1- Front end cover 2- Cylinder body 3- Fastening screw 4- Partition plate 5- Gasket 6- Piston 7- Rear end cover 8- Intake and exhaust holes 9- Rubber pad 10- Damping hole 11- Quick exhaust hole 12 - center hole of the partition

Detailed ways

An embodiment of the present utility model is further described below in conjunction with accompanying drawing:

The device is mainly composed of cylinder body 2, front end cover 1, rear end cover 7, dividing plate 4, piston 6 and other parts. The front end cover is used to place timber in the cylinder body, and is fixed on the cylinder body by fastening bolts, and the rear end cover 7 is fixed on the cylinder body by fastening bolts 3 . There is a partition in the cylinder, the partition has a central hole, and there is a quick exhaust hole on the wall of the cylinder. The piston can move in the cylinder and has a damping hole. The front and rear positions are limited by the partition and the rear end cover. The cover has intake and exhaust holes, which are connected with the air compressor and the exhaust valve.

The cylinder body is divided into left and right chambers, which are separated by a dividing plate 4 . The left cavity is the working cavity, which is used to pressurize the wood and is in a sealed state when working. The right chamber is a piston cylinder, and the built-in piston is used to open or close the left working chamber, and the working chamber can be filled with high-pressure gas through the damping hole in the center of the piston.

The working process of the device is:

When the wood is pressurized as shown in Figure 1, the high-pressure gas enters from the intake and exhaust holes 8, and the piston 6 is pushed to move to the left, extruding the gasket 5, so that the space where the wood is located is disconnected from the quick exhaust hole 11. The pressure gas enters the working chamber composed of the front end cover 1, the cylinder body 2, the partition plate 4 and the piston 6 from the damping hole 10, until the pressure in the inner space of the device reaches balance, and the air pressure on both sides of the piston 6 is equal. Because the force-bearing areas on both sides of the piston are different, the force-bearing area on the right side is larger than that on the left side, so the rightward force on the piston is less than the leftward force at this time, resulting in a resultant force to the left, making the piston tight Press tightly on the sealing gasket 5 to play a good sealing effect. The wood bears the action of high-pressure gas in the working chamber, so that its internal pressure is balanced with the external pressure.

When the pressure is released quickly as shown in Figure 2, the high-pressure gas on the right side of the piston is discharged from the intake and exhaust holes 8, and the pressure drops rapidly. At this time, the gas on the left side of the piston will also be discharged to the left from the damping hole. Due to the effect of the damping hole, the gas pressure on the left side will drop slowly. Make the rightward force on the piston become smaller and larger until it exceeds the leftward force, resulting in a rightward resultant force, forcing the piston to move quickly to the right, opening the center hole 12 of the partition, and allowing the gas in the working chamber to flow quickly. The rapid exhaust hole 11 is discharged, the pressure in the working chamber drops sharply, and the pressure gas inside the wood diffuses outward rapidly, realizing micro blasting. The rubber pad 9 has a buffering effect on the piston 6 moving to the right.

Claims (2)

1. the inner micro-explosion device of a timber, comprise cylinder body, drive end bearing bracket, rear end cap, dividing plate, piston, drive end bearing bracket is fixed on the cylinder body by fastening bolt, and rear end cap also is fixed on the cylinder body by fastening bolt, dividing plate is arranged in the cylinder body, dividing plate has centre bore, and quick steam vent is arranged on the cylinder wall, and piston can move in cylinder body, and have a damping hole, front and back position is by dividing plate and rear end cap restriction, and port is stamped in the rear end, links with air compressor machine and air bleeding valve.

2. the inner micro-explosion device of timber as claimed in claim 1 is characterized in that: two chambeies about cylinder body divides, separate by dividing plate, and left chamber is a working chamber, right chamber is a piston cylinder, built-in piston.

Images