JPS60123397A - Operating device for bottom valve of tank lorry - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

The present invention relates to a bottom valve operating device for a tank lorry, which is equipped with a fluid operating device for opening a bottom valve against a bomb. Conventionally, in the bottom valve operating device of a tank truck IJ- equipped with a fluid actuated device that opens and closes with a fluid such as air pressure, the valve body of the bottom valve is closed by a bullet, and the fluid actuated device For example, when air pressure is used, the air pressure is usually extracted from an air tank for the air brake of a tank lorry. If for some reason the air pressure in this air tank decreases, or if the bottom valve cannot be opened due to equipment failure in the air piping system, the loaded liquid in the tank chamber cannot be unloaded. However, this poses a serious problem in that it may not be possible to repair the malfunctioning part, so there has always been concern about the use of fluid-operated bottom valves. For this reason, by installing a fluid operating device that opens the bottom valve and a manual operating device, in the event of a failure of the fluid operating device, the bottom valve can be opened and unloaded using the manual opening/closing device that can operate reliably. However, in the unlikely event that a fire breaks out during unloading, the main operating device, the fluid operating device, is configured to release air urgently and close the bottom valve in an emergency manner. No emergency closure was contemplated for the manual actuator of the auxiliary actuator. The present invention provides a fluid actuation device that opens a bottom valve and a manual actuation device, and also provides an emergency closing device that closes the bottom valve opened by the fluid actuation device or the manual actuation device flK. In the event of equipment failure,
The bottom valve is opened and unloaded using a manual opening/closing device that can be operated reliably, and even if the bottom valve is opened by either a fluid-operated device or a manual-operated device, it can be closed in an emergency, preventing the occurrence of a fire during unloading. The aim is to prevent serious accidents during accidents. Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. In FIGS. 1 to 6, l indicates a tank lorry, and a tank 5 for storing liquid is mounted on the chassis 3, and the tank 5 is separated by partition plates 7, 7.
It is divided into 9 + 91C. Reference numeral 11 designates an inlet provided at the top of each tank chamber 9; reference numeral 13 designates a bottom valve provided at the 11 portion of each tank chamber 90; and reference numeral 15 designates a pipe that communicates each bottom valve 13 with the discharge valve 17. 19 controls the opening operation of the bottom valve 13'
Solenoid on-off valve, S. S' is an operation switch provided at the top and bottom of the tank 5, respectively, to open and close the electromagnetic on-off valve 19, and the switch is fixed to the plate 20. 25 is an air tank, 2
7 is a ladder. FIG. 2 shows the bottom valve 13, which is constructed as follows. That is, the valve body 29 is fixed to the bottom of the tank 5 and communicates with the pipe J5. 31 is a valve body that is fixed to a valve rod 33K that fits into the valve body 29 in the vertical direction;
9σ) Valve seat 35 opens and closes. Reference numeral 36 denotes a fluid operating device, and 414 is constructed as follows. In other words, 37 is fixed to the lower end of the valve stem 33? - a piston which is slidably fitted into a cylinder portion 39 provided at the lower part of the valve body 29. 41 is an air pipe communicating with the chamber 43 below the piston 37, and 45 is an elastic force that biases the valve body 31 in the direction of closing. Reference numeral 47 denotes a manual operating device, which is constructed as follows. That is, 49 has a screw 51 attached to the lower end of the cylinder part 39.
．． The valve body 31 is raised and lowered by being rotated by a handle 55 using a screw screw screwed into a bottom cover 53 fixed by a screw 51, and its upper end is brought into contact with the lower end of the valve rod 33 to raise the valve body 31. Reference numeral 57 denotes an oil seal fitted to the outer periphery of the screw punch 49, which maintains airtightness around the screw punch 49 when the screw punch 49 is lowered. Reference numeral 59 is an emergency chain device constructed as follows. That is, 6J is a flange portion connected to the pipe 15 of the bottom valve J3, and a valve seat 63 is formed on the end face of the pipe 15. Reference numeral 65 opens and closes the valve seat 63 by a valve body which is fixed to a horizontal shaft 67 and pivoted to an arm 69 that can swing up and down. An arm 71 is fixed to the outer end of the shaft 67, and is connected via a rod 73 to an emergency lever 751C at the rear. Reference numeral 77 denotes a bullet having one end locked to the arm 71 and the other end locked to the side surface of the valve body 29, which biases the valve body 65 to be held in the open and closed positions, respectively. FIG. 3 shows the on-off valve 19, which is constructed as follows. That is, 79 is the valve body 8j.
A spool 83 is slidably fitted inside the spool 79.
The bullet that urges the silk lure 9 to the right in Figure 3, SQL is a solenoid, and by passing electricity, the bullet 83
3 to the left in FIG. The structure and operation of the solenoid SQL are the same as those commonly used, so a detailed explanation will be omitted here. When the scale lure 9 is at position a, which is moved to the right as shown in FIG.
The pipe 41 communicates with the air tank 25 through the communication hole 85 which opens to the atmosphere, and the pipe 87vL when the pipe 41 is in the position b moved to the left. FIG. 5 shows the electric circuit. , Fig. 6 shows the air circuit.The solenoid SQL of the electromagnetic on-off valve 19 is set to 5Q according to the arrangement order of the 1st, 2nd, and 3rd tanks.
L-1, 5QL-2, and 5QL-3. Similarly, the operation switches S and S' are set to S-1 in the order of tank chamber 19.
, S-2, 8-3 and S'-1, S'-2, S'-
3, and is further divided into a push-button type for current connection and a push-button type for *current disconnection, and are given the symbols a and b, respectively, and distinguished by -C. That is, Sa-1, Sa-2, 8a-3
is the operation switch for connection on the top of the tank, Sb-1, 5
b-2 and 5b-3 are disconnection operation switches on the top of the tank;
S'a i, +s'a: 2+S'a-3 is the operation switch for connecting the current at the bottom of the tank, S'b-1, 8' h-
2, 8' b-3 indicates the ji4 provided at the bottom of the tank and an operation switch for cutting off the flow. Further r ] +
r 2 r r 3 and r/ -1+r' 2+r
' 3 are contacts of relays R-1, R-2, and R-3, respectively, and 89 is a battery. In addition, the compressor 91 and the air tank 25 are mounted on the chassis.
It also serves as the one used for the air brake in No. 3. In the following embodiment, for example, in order to open the first tank chamber 90 valve 13, the operating switch 5R-1 or S' located at the lower part of the tank chamber 5 is pressed.
When pressing a-1 and connecting the circuit, relay 1t-1 is energized, contact r'] is connected and the self-holding loop is connected, contact r-1 is connected and solenoid 5QL-1 is energized, Switch the 11L magnetic on-off valve 19 to the 1 position or the 1) ■ position. Therefore, the pressurized air generated by the compressor 91 is sent to the cylinder part 39 of the bottom valve J3 through the air tank 25 and the electromagnetic on-off valve 19, and pushes up the piston 37 against the bomb 45, causing the valve body 31 to move to the valve seat. 35, the bottom valve 3 opens, and the liquid in the tank chamber 9 flows to the pipe 15.
The water is discharged through the discharge valve 17. To close the bottom valve 13, press the operation switch 5b- at the top or bottom of the tank 5.
When you press 1 or s'b-i to disconnect the circuit, the current in relay R-1 is interrupted, contact r/-1 is disconnected and self-holding is released, contact r-1 is disconnected and 5QL-1
When the current is cut off, the electromagnetic on-off valve 19 is returned from the position b to the position a by the bullet 83, and the air in the cylinder part 39 is pushed out by the bomb 45Vc via the piston 37, and the electromagnetic on-off valve 19 is released into the atmosphere from the communication hole 85,
Bottom valve 13 is closed. Similarly, the bottom valves 13 of the second and third tank chambers 9 can be opened and closed. If the bottom valve 13 cannot be opened by the fluid actuator 36 after loading due to lack of pressure in the air tank 25 or failure of the electric circuit or electric circuit, the screwdriver 49 can be assisted by the nondle 55. [Then, the screw punch 49 rises and pushes up the valve body 31 via the valve stem 33 to open the bottom valve]
The result is 0) by opening 3. In case of an emergency such as a fire occurring while the bottom valve 13 is opened and the liquid is being drained, operate the emergency relay <-75 and move the rod 7:3 in the direction of arrow A in Figure 2. When operated, arm 69
rotates and the valve body 65 comes into contact with the valve seat 63.

[5 valves + 3
is closed, and the bottom valve 13 is fluid-operated 1%:ll'
t 36 and manual actuator 47 1. - Even if it is opened by the misalignment device t1, it can be closed in an emergency. In addition, there is a bow 4 that is not shown. , 1 person 1
/bar 75 is linked to the bottom valve 13 of each tank chamber 9 -4-
Be C0') Mr. J valve 13 is set to close at the same time.
It's okay. Also, emergency reno <-75 and Vci 5 molten 1
An emergency device may be provided so that when the emergency Renocou 75 cannot be operated, the i5J melt melts and activates the -C emergency closing device 59. 13 shows a second embodiment, which is constructed as follows. Note that the same reference numerals as those shown in FIGS. 1 to 6 represent the same components. That is, the valve hole 95 that opens in the valve body 93 fixed to the bottom of the tank chamber 9 communicates with the piping 15. Reference numeral 99 is a valve body that opens and closes the valve seat 97 around the valve hole 95. It is fixed to the lower end of a valve stem 103 that is supported in a vertically movable manner by a support 101 fixed to the upper part of the valve stem 103.
1.07 is the valve stem 10
The piston is fixed to the upper end of the support body 01 and is slidably molded onto the cylinder 109 fixed to the upper part of the support body ]01. ] 11 is a communicating hole passing through the valve body 103, and a piston];
The square valve body 93 of the chamber 1]3 on the top surface of 07 and the valve body 99
It communicates with the inside of the tank to balance the pressure. Reference numeral 115 denotes a bullet that urges the valve body 99 to press against the valve seat 97. Reference numeral 117 denotes an arm pivotally connected to the valve body 93 by a shaft 119 so as to be able to freely swing up and down, and is provided so as to be able to freely suppress the lower end of the valve stem 103. Reference numeral 121 denotes an arm M1-' which is fixed to the outer end of the shaft 119, and one end of the operating wire 123 is connected to the end, and the operating wire 123 is guided by the arrow B in FIG.
The arm 117 is arranged to raise the valve stem 103 and open the valve hole 95 by pulling in the direction. In this embodiment, the manual actuator 47 is constructed as follows. In other words, 125 has the support shaft 1 on the main body 127.
29, which is pivotally attached to the operating lever, and is provided corresponding to each bottom valve 13. 131 has one end as axis 1
33 to the operating lever 125, and the other end is connected to the operating wire via the fluid actuation device 36]2
It is connected to 3. The fluid actuator 36 is constructed as follows. That is, 135 is a cylinder whose bottom part is connected to the other end of the curved link 131 by a shaft 137, and a piston rod 139 is fixed to a piston (not shown) that is slidably fitted inside. A control wire 123 is connected to the control wire 123. The cylinder 135 communicates with the air pipe 41, and when pressurized air is sent, the piston rod 139 contracts and the operation wire 12
3 to open the bottom valve 13. ] 41 is a guide rod whose parallel nine ends are fixed to the cylinder 135,
It is supported by a shaft portion 143 fixed to the main body 127 so as to be slidable in the horizontal direction. The emergency closing device 59 is constructed as follows. In other words, 145 is the support shaft 129&CI
Emergency arm pivoted at the end, operating lever 1 arranged side by side
25, 125° 125, and the other end is fixed integrally with the horizontal locking rod 147. Reference numeral 149 denotes a protrusion projecting upward from the emergency arm 145, to which an emergency wire 151 connected to the emergency lever 75 is connected. 153 is a bullet that urges the emergency arm 145 downward. Reference numeral 155 is an actuation piece fixed to the tip of the emergency arm 145, and is used to push up and operate the actuation arm 159 of the emergency operation valve 157 when the emergency arm 145 is raised. Reference numeral 161 denotes an automatic emergency arm, which is pivotally connected to the main body 127 by a shaft 162 so as to be able to swing up and down, and a roller 163 rotatably provided at the tip comes into contact with the lower surface of the emergency arm 145 and is biased in the direction of pressing by the ammunition 165. has been done. 167 is the other end of the automatic emergency arm 161 and the main body 127
A fusible piece connects the automatic emergency arm 161 in place against the projectile 165. The emergency operation valve 157 is configured as follows. That is, 16
Reference numeral 9 denotes a rubber valve body provided in the valve body 171, which opens and closes a passage 177 connecting an air pipe 173 communicating with the electromagnetic on-off valve 19 and a filtered air pipe 175 communicating with the air tank 25. A rubber valve element 179 opens and closes a passage 181 that branches from the passage 177 and communicates with the atmosphere.It is fixed to the valve element 169 by a rod 183, and is alternately opened and closed by raising and lowering the rod 183. It's a bastard. 1
85 is a bullet that urges the rod 183 upward. 1
87 is a bracket protruding from the upper part of the valve body 171;
Reference numeral 9 denotes a cam portion provided at the lower part of the actuating Qi II arm 159 which is pivotally attached to the bracket 87 by a shaft 191. By rotating the actuating arm 159 in the direction of arrow C in FIG. The upper end is configured to be pushed down. 193 is a stopper. In the above embodiment, for example, when opening the bottom valve 13 of the first tank chamber 9, the operation switch 3a-1 at the upper or lower part of the tank chamber 9 is operated as in the first embodiment.
Or, when you press S/a-1 to connect the circuit, the electromagnetic on-off valve 19 switches from the a position to the b position and pressurized air is sent to the cylinder 135. When the piston rod 139 contracts, the operating wire 123 is pulled. The arm 117 rotates upward to push up the valve body 99 and open the bottom valve 13, and the liquid in the tank chamber 9 is discharged from the pipe 15 through the discharge valve 17. Also, the operation switch 5b-1 or S'b-1
When the circuit is disconnected by pressing , the electromagnetic on-off valve 19 switches from the b position to the a position, the air in the cylinder 135 is released, the piston rod 139 returns and extends, and the bottom valve 13
will be closed. If the bottom valve 13 cannot be opened by the fluid actuator 36VC after loading due to lack of pressure in the air tank 25 or failure of the air circuit or electric circuit, etc., move the operating lever 125 in the direction of the arrow in FIG. When the shaft 133 is rotated -4'' to the position where it contacts the locking rod 147, the shaft 133 becomes lower than the straight line connecting the l1qh centers of the shaft 137 and the support shaft 129, and the operating lever 125 remains in its position even if you release your hand. In this state, the cylinder 13
5. Sweeping wire 123 via piston rod 139
is pulled, and the same 4yi Ii<valve J3 as mentioned above is opened. In the event of an emergency such as a fire occurring while the bottom valve 3 is open and the liquid is being drained, the emergency wire 1.51 will be pulled by moving the emergency lever 75 in the direction of arrow Er in Fig. 13. He Cs
The arm 145 rotates upward, and the hand ii'J
By J "[11 When the bottom valve 13 is opened by the device mechanism 47, when the locking rod 147 pushes up the operating lever 125, the operating lever 25 returns to its original position by the bottom valve 130 bullet 45 and the bottom valve is opened. 13 is closed. Also, the fluid operated device ff36
When valve J is opened, the actuating piece 155 pushes up the actuating arm 159 to switch the emergency operation valve 157 and release the air in the cylinder 135, and the piston rod 139 extends to open the bottom valve. 13 will be closed. When the emergency lever 75 etc. cannot be operated due to a fire, when the fusible piece 167 is melted by heat, the automatic emergency arm 161 is rotated upward by the bullet 165 and the roller 163
pushes the emergency arm 145 upward, and the bottom valve 13 is closed in the same manner as described above. Since the present invention has the configuration as described in the claims,
In the event of a failure of the fluid-operated device, the bottom valve can be reliably opened and unloaded using the manual operating device, and therefore the fluid-operated device, which is easy to work with, can be used without anxiety, and the fluid-operated device 2 Even if the bottom valve is opened using any of the manually operated devices, it can be closed immediately to prevent serious accidents from occurring. Incidentally, the term "parallelly installed" in the present invention means that they are provided together, and is not limited to providing them in parallel. Furthermore, manual operation means operation by manual operation without fluid operation, and does not include operation in which a fluid-operated device is operated by manually operating an operating valve. Further, in the above-described embodiment, the fluid-operated FRb device is electrically operated by an electric switch, but the fluid-operated device may be operated by an operating valve. Furthermore, a manual actuator may be provided to be operated from the riB on the tank. In the above-mentioned embodiment, the bottom valve is opened by air pressure, and a two-position electromagnetic on-off valve is used, or hydraulic pressure may be used for fluid pressure, and the electromagnetic on-off valve has three positions.
It is also possible to use a positional one, and both of them are applicable to the present invention. In the first embodiment, the emergency closing device 5-9 may be formed separately from the valve body 29 and fixed to the valve body 29 integrally, or the emergency closing device may include a butterfly valve. may also be used. That is, one embodiment of the present invention is one in which a butterfly-type emergency closing device 59 is sandwiched and fixed between the valve body 29 and the pipe 15. It should be noted that the present invention is not limited to the above-mentioned embodiments, but can be implemented in other embodiments as well.・t,
The reference numerals shown in the claims do not limit the technical scope of the present invention.

[Brief explanation of the drawing]

Fig. 1 is a side view of a tank truck equipped with an embodiment of the present invention, Fig. 2 is a side sectional view of an embodiment of the invention, Fig. 3 is a side sectional view of an electromagnetic shut-off valve, and Fig. 4 is a side sectional view of a tank truck equipped with an embodiment of the present invention. 5 is an electric circuit diagram of one embodiment of the present invention, FIG. 6 is a fluid circuit diagram of the same, FIG. 7 is a side view of a tank truck equipped with the second embodiment, and FIG. 9 is a side sectional view of the main part of the second embodiment, FIG. 9 is a side sectional view of the emergency operation valve, FIG. 10 is a fluid circuit diagram of the same, and FIGS. 11 and 12 are of the second embodiment. The side view, front sectional view, and FIG. 13 are side views of the emergency lever. (Explanation of symbols representing main parts in the drawings) 13...bottom valve, 36...fluid actuator, 45...munition machine, 4
7...Manual actuation device, 59...Emergency closing device patent applicant Showa Aircraft Industry Co., Ltd.5. ...-. Representative Patent Attorney Yasuo Miyoshi 'Te Figure 10', '-12-

Claims (1)

[Claims] A fluid actuation device 36 for opening the bottom valve 13 against the bomb 45 and a manual actuation device 47 for opening the bottom valve 13 by manual operation are provided, and the fluid actuation device 36 and the manual actuation device A bottom valve operation device for a tank truck, characterized in that an emergency closing device 59 is provided to close the bottom valve 13 opened by the bottom valve 47.