JPS5956044A - Heat insulating cover - Google Patents

Abstract

PURPOSE:To improve the environment of operation and to facilitate operation, by constituting a heat insulating cover of a large tank used as a painting pre- treatment tank or the like by an expanded material having a low coefficient of moisture absorptivity, and dividing the cover into two parts so that it can be opened in a half-folded manner. CONSTITUTION:A heat insulating cover 6 is obtained by attaching a heat insulating plate 25 to iron frames 24, and the heat insulating plate 25 is obtained by laminating panels of colored iron plates 27 to both sides of an expanded heat insulating material 26 having a low moisture absorptivity. The cover 6 can be opened around the pivotal point of a hinge 11 through operation of a hoisting means 14, in the manner that its front cover part 8 is folded downward along a dividing line 16 in a half-folded state. Thus, when a wire or chain 18 is tightened by the weight of the cover 6 and its opening operation proceeds further, the front cover part 8 is moved upward together with the end part of a rear cover 9 with its angle around the hinge 11 being restricted and the cover 6 is opened gradually to a vertical position.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a moisturizing lid that prevents heat radiation from the liquid surface of a heating tank and evaporation loss, and particularly relates to the structure of a large-layer heat-insulating lid.

Large tanks such as pre-painting treatment tanks for degreasing/zinc acid film treatment and paint stripping tanks are heated with steam or electric heaters, but the liquid surface is open to the public. If the upper part is open, heat radiation loss and vaporization latent heat loss due to liquid evaporation are large, which is not preferable from an energy standpoint. As a countermeasure for this, there is a method of floating a liquid float agent 2 or a solid float material 3 in the tank 1, as shown in Figures 1 and 2, but this method may cause quality problems, products or processed materials. There is a problem that the floating material may be taken out, and in the case of a large-sized float material 4 as shown in FIG. 3, there is a problem that stirring of the liquid is obstructed. In order to deal with this problem, even if an attempt was made to adopt a heat-insulating M5 seizo as shown in FIG. 4, the lid 5 itself would become large and the
The large, single-piece heat-insulating lid 5 cannot be used because it cannot be opened or closed if the building is low or there are obstacles above it, and no effective heat-insulating method has been found, and improvements have been desired in terms of energy saving measures.

The present invention aims to suppress heat dissipation and evaporation loss from the liquid surface of the heating tank without causing quality or processing problems, thereby promoting energy saving measures. The purpose is to provide a heat-insulating lid structure that is optimal for use in large tanks.

In order to achieve this objective, in the heat-insulating lid of the present invention, a heat-insulating plate with a closed-cell type foam insulation 144 with low moisture absorption protected by panels on both sides is attached to the lid frame to keep the tank warm. The heat-insulating lid is divided into a front lid and a rear lid at the center. The rear lid is supported by the upper edge so that it can be opened and closed by a hinge, and the front lid and the rear lid are connected by a hinge on the inner side of the insulation lid, so when the rear lid is opened, the front lid is It is supported by a hinge so that it is bent toward the rear lid side at the part where it separates from the rear lid, and is in a half-folded state.

In this J: Tsuna structure, the heat insulating board is made of a material with low moisture absorption and good heat insulation properties with air bubbles inside, laminated with panels on both sides, and waterproof. ,
Since it is constructed with extremely excellent moisture resistance, it not only provides good heat retention performance, but also allows for easy peeling of 1q when increasing in size. In addition, the insulation lid has a two-part structure, and each lid is supported by a hinge so that it is folded in half when opened, which greatly alleviates the space constraints of conventional large lids. (Using method (■), an optimal heat-insulating lid structure can be obtained and the desired purpose can be achieved.

Preferred embodiments of the present invention will be described below with reference to the drawings.

5 to 8 show a heat-insulating lid according to an embodiment of the present invention, and 6 in the figures shows the entire heat-insulating lid that is large enough to cover the entire upper part of the heating tank 7. There is. The heat-insulating lid 6 is divided into two parts at its center, into a front lid 8 and a rear lid 9. The front lid 8 and the rear lid 9 are bent toward the inner surface of the heat-insulating lid 6 by a hinge 1o on the inner side. They are connected so that they can be folded in half. Front lid 8 of rear lid 9
The edge on the opposite side is connected to one upper edge of the heating tank 7 by a hinge 11, and the rear lid 9 can be opened and closed r11 using the hinge 11 as a fulcrum.

To open and close the rear lid 9, use the engaging part 1 provided at the end of the rear lid 9 on the front lid 8 side, for example, by hooking a chino or wire A713 to an eye bolt or round hole, etc.
This is carried out by hoisting or lowering using a hoisting device 14 provided obliquely above and at the rear of the rear cover 9, such as an electric blow block or a hoist. Directly below the hoisting device 14, a guide sprocket or guide pulley 15 is provided so that the wire or wire 13 is hoisted in a vertical direction.

At both side edges of the front lid 8 on the rear lid 9 side, arms 17 are provided that extend from the division t7@16 between the front lid 8 and the rear lid 9 to the rear lid 9 side. One end of a wire or chain 18 is connected to the tip of the arm 17 on the side of the rear lid 9, and the other end of the wire or chain 18 is fixed behind the rear lid 9 and is unrelated to the opening/closing operation of the rear lid 9. part (anchor)
It is connected to 19. Divided portion 1 at the end of the front lid 8 opposite to the rear lid 9 and between the front N8 of the front W8 and the rear lid 9
A guide roller 20 is rotatably supported on both sides of the grooves that are perpendicular to each other. This guide roller 2
A guide rail 21 is provided at the upper end of the heating tank 7 at a position corresponding to position 0, and extends along the upper edge of the heating tank 7 and gradually becomes higher toward the rear lid 9 side. , the guide roller 20 can be moved on the guide rail 21.

A limit switch 22 is attached to the side edge of the rear lid 9 on the front lid 8 side. A confirmation signal for closing the rear cover 9 is issued. The limit switch 22 may be attached and detected by attaching it to the heating tank 7 side and providing a detection bracket on the rear lid 9 side to detect the closing of the rear lid 9.

A limit switch 23 is received so as to be able to come into contact with the upper surface of the rear M9 when the rear lid 9 is completely opened, that is, when the rear lid 9 is in an almost vertical state. It is possible to check the open state of 9.

FIG. 9 shows the cross-sectional structure of the heat-insulating lid 6.
It consists of a frame 24 made of steel and a heat insulating plate 25 stretched over it. The heat insulating plate 25 is made of a closed-cell foam heat insulating material 26 with low hygroscopicity, such as hard foamed urethane, and colored iron plates 27 are laminated on both sides thereof.

In the insulating lid of the present invention having the above-mentioned configuration, the opening and closing operations of the insulating lid 6 are performed as shown in FIG. 7. That is, the opening operation of the heat-insulating lid 6 is performed when the rear lid 9 is operated by the winding device 14.
is opened using the hinge 11 as a fulcrum by winding up the front lid 8.
is bent downward from the dividing line 16 to form a half-folded state. This half-folded state of the front lid 8 progresses as if it were stuck. Warmth) Wai V or Cheno 18, which was relaxed when the insulation lid 6 was opened, became tense when the insulation lid 6 was opened.
When the closing operation of the insulation lid 6 progresses in a tense state, the front lid 8 is moved upward together with the end of the rear lid 9 while the angle around e:Mlo is restricted by the worker or the chino 8, and the front lid 8 is closed. gradually transition from horizontal to vertical. This J: sea urchin front M8 is due to its own weight and wire
While the tension of 1st block 18 is balanced, the rear f1
With the closing operation of 9, it gradually becomes half-folded, so
The front lid 8 does not vibrate or receive shock horns due to rotation of the front portion M8 around the hinge 10, and smooth operation is performed. Moreover, the front end portion of the front lid 8 is supported by the guide roller 20 during the closing operation.
Since the guide roller 20 is guided along the guide rail 21, the front end portion is lifted while being smoothly guided along the upper edge of the heating tank 7. When the rear lid 9 is opened to a nearly vertical position, the front lid 8 is also almost vertically folded, the vertical position of the rear lid 9 is detected by the limit switch 23, and the winding operation of the winding device @14 is stopped. be done. Since the heat retaining lid 6 is in a half-folded state when it is opened, the space occupied by the heat retaining lid 6 in the upward direction is approximately 1/2 that of a single-piece lid, which is significantly reduced.

The closing operation of the heat-insulating lid 6 is completely opposite to the closing operation, and the front lid 8 is gradually lowered from a vertical half-folded state to a horizontal state as the rear portion M9 closes. When the front end of the front lid 8, that is, the guide roller 20 reaches the position of the guide rail 21, the guide roller 20 is guided by the guide rail 21 and rotates around the hinge 10 until the front lid 8 becomes horizontal. Then, the heat-insulating lid 6 is closed. The limit switch 22 detects that the rear lid 9 is completely closed, and the lowering operation of the hoisting device 14 is stopped. Since the front lid 8 is guided by the guide rollers 20 until it is completely closed, it is smoothly closed until the end, that is, until the lower surface of the front lid 8 is completely in close contact with the upper end surface of the heating tank 7. The rear lid 9 is closed by its own weight until it comes into close contact with the upper end surface of the heating tank 7.
Since iΣ is performed by the limit switch 22 at the position where the rear lid 9 has the largest vertical movement, a completely open state is guaranteed. By smoothly closing both the front lid 8.1 and the opening lid 9 until they are completely closed, the sealing rate is close to 100%, and heat radiation and evaporation from the surface of the liquid inside the heating lil 7 are suppressed. ,good? , 7 energy saving effects can be obtained. In addition, the cross-sectional structure of the heat insulating board is IN 3, which is made of foamed heat insulating material 2G with low hygroscopicity and good cross-section with closed cells inside, and further covered with panels 27 on both sides.
Th, extremely excellent heat retention, waterproof and moisture proof properties can be obtained, and since the panel 27 serves not only to protect the heat insulating material 26 but also to reinforce it, it also has excellent strength.

Therefore, the insulation lid 6 is good! ! It is easy to increase the size as well as the temperature performance.

As explained above, when using the heat-insulating lid of the present invention, the jI! of the heat-insulating plate of the heat-insulating lid! t3i! Since i is a foamed moisturizing material with low hygroscopicity protected by panels on both sides, (
7) It has excellent thermal protection, waterproof, and moisture-proof properties, and the heat-insulating lid is divided into two parts so that it can be folded in half, making it easy to use even in low places in the building or in places with obstacles. A heat-insulating lid can be installed, and good heat-insulating performance can be obtained without causing quality or processing problems associated with conventional float types.

In addition, if the front lid of the heat-insulating lid, which is divided into two parts, is made easier to open and close while regulating the opening angle using a wire or china, you can open and close the heat-insulating lid smoothly without applying impact force or vibration. can be done.

Furthermore, a guide roller is installed on the front lid so that when the lid is opened and closed, the guide roller is guided along the guide rail provided at the top of the tank. By providing this, the heat insulating lid can be closed in close contact with the upper end of the tank, and a good seal can be achieved.

With good sealing performance such as good heat retention performance, it is possible to improve the working environment and prevent corrosion of buildings and equipment.
Moreover, since the heat-insulating lid structure was easily adopted and smooth opening operation was possible, it was possible to combine the opening/closing device with control plates such as the workpiece retrieval and loading port, making it possible to fully automate processing and transportation. It becomes possible to measure.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view showing an example of a conventional liquid flow 1- Fig. 2 is a longitudinal cross-sectional view showing an example of a conventional solid 7-day flow -1~ Fig. 3 is a longitudinal cross-sectional view showing an example of a conventional solid flow 1-1 flow! Fig. 4 is a vertical sectional view showing an example of a conventional one-piece thermal insulation lid; Fig. 5 is a plan view of a storage product lid according to an embodiment of the present invention. , Fig. 6 is a front view of the device shown in Fig. 5, Fig. 7 is a side view of the device shown in Fig. 5, Fig. 8 is a partial side view of the device shown in Fig. 5, and Fig. 9 is a sectional view of the insulation lid. , is. 6...Heat insulation lid 7...Heating tank 8...Front lid 9...Rear lid 10.11...... Hinge 12... Engaging portion 13.18...... End or wire 14
......Hoisting device 16...Parting line 17...Arm 19...Fixing part 20... ......Guide roller 21......Guide rail 22.23......Limit switch 24.
・・・・・・・・・Frame 25・・・・・・・・・Heat insulation plate 26・・・・・・・Foam insulation material 27・・・・・・Colored iron plate as panel 5
Figure 6 Figure 8

Claims (4)

[Claims] (1) The heat insulating lid of the tank is constructed by attaching a heat insulating board with closed cell type foam heat insulating material with low moisture absorption protected by panels on both sides of the frame, and the heat insulating lid is connected in the center to the front lid and the rear. The end of the rear lid opposite to the front lid is connected to the upper edge of the tank with a hinge so that the rear lid can be opened and closed, and the front lid and the rear lid are connected with a hinge on the inner side of the insulation lid. A 1L heat-retaining device characterized in that the front lid is connected to form a half-folding structure when the heat-insulating lid is opened. (2) The heat-insulating lid according to claim 1, wherein the front lid side of the rear lid is connected to a winding device provided diagonally above and behind the rear lid via a wire or a chino. (3) An arm extending toward the rear lid from the dividing line between the front lid and the rear lid is received on the rear lid side of the front lid, and one end of a wire or chino is connected to the arm, and the wire A7 or The heat insulating lid according to claim 1, wherein the other end of the chino is connected to a fixed part unrelated to the opening/closing operation of the heat insulating lid. (4) A guide roller is provided at the end of the front lid opposite to the rear lid and at a side edge perpendicular to the dividing line between the front lid and the rear lid, and a guide roller is provided on the upper end surface of the tank. The heat-insulating lid according to claim 1, further comprising a guide rail for the guide roller.