JP6704482B1 - Trigger sprayer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use a proper material for each part, prevent a liquid such as a corrosive liquid from contacting a metal part such as a spring, prolong the life of the part, and ensure long-term reliability. SOLUTION: An outer cylinder part 51 is detachably attached to a container body 21 having an opening for accommodating a metal corrosive liquid L, and an outer peripheral wall is provided so as to be insertable into and removable from the outer cylinder part 51. Is disposed with a gap from the inner peripheral wall of the outer tubular portion 51, and has a cylinder body 61 made of a PPS resin material having a hole portion 65a connected to the flow passage 92 side in the bottom lid 65, and the tip is directed toward the cylinder body 61. A piston 71 movably inserted and removed, a manual lever 80 attached to the base end side of the piston 71 to reciprocate the piston 71, a flange portion 72a provided on the base end side of the piston 71, and a flange portion 72a. And a tip end portion of the expanded diameter portion 61b of the cylinder body 61, and a coil spring 75 for urging the piston 71 in a direction to be removed from the cylinder body 61. [Selection diagram]

Description

The present invention relates to a trigger-type atomizer suitable for spraying a strong acid having a property of corroding a metal, a strong alkaline, a metal corrosive liquid such as a sodium hypochlorite solution.

When spraying a liquid such as water or detergent using a sprayer, a pressure sprayer having a structure provided with a pump mechanism for pressurizing the liquid contained in the container is well known. As a mechanism for operating the pump mechanism, a trigger type or the like is generally used (for example, refer to Patent Documents 1 and 2). In the piston-cylinder type and the trigger type, a spring made of a metal material such as stainless steel is used to return the piston and the trigger to their original positions by the spring.

FIG. 8 is a vertical sectional view showing an example of the trigger sprayer 100. The trigger-type sprayer 100 includes a container 120 made of a resin material for containing a metal corrosive liquid L, and a trigger-type pressure structure (manually operated pressure structure) detachably attached to the upper part of the container 120. ) 130 and.

The storage container 120 includes a container main body 121 for storing the metal corrosive liquid L, and an opening 122 provided on the container main body 121 and having an external thread 122a formed on the outer peripheral portion.

The trigger-type pressure structure 130 includes a mounting portion 140 that is detachably mounted on the container body 121, a pressure pump 150 that is integrally provided on an upper portion of the mounting portion 140, and drives the pressure pump 150. The manual lever 160 and the ejection head 170 integrally provided on the pressurizing pump 150 are provided.

The mounting portion 140 is provided with a tubular large diameter mounting large diameter portion 141 and a tubular small diameter mounting small diameter portion 142. On the inner wall surface of the mounting large-diameter portion 141, a female screw 141a that is screwed into the above-mentioned male screw 122a is formed.

A tubular pipe support portion 143 is inserted into the mounting small diameter portion 142. The pipe supporting portion 143 has a male screw 143 a formed on the outer periphery of the pipe supporting portion 143. A sleeve 143b is formed inside the tube support portion 143. The base end side of the suction pipe 144 is inserted into the sleeve 143b so as to be freely inserted and removed. The tip end side of the suction tube 144 is inserted into the container body 121. A small diameter air passage 142a is formed in the mounting small diameter portion 142. The air flow path 142a communicates with the inner surface of the outer cylinder portion 151 described later, and communicates with the outside as it is.

A ball valve 145 is formed on the sleeve 143b.

The pressurizing pump 150 has an outer cylinder part 151 having a cylindrical space, and a cylinder part 152 is formed in the outer cylinder part 151 from the right end side in FIG. The axial length of the cylinder portion 152 is formed to be approximately half the axial length of the outer tubular portion 151. The left end side opening portion of the outer tubular portion 151 in FIG. 8 has a large inner diameter, and a step portion 153 is formed.

A piston 154 is removably inserted into the outer cylinder portion 151. The piston 154 has a shaft 155 formed in the shape of a bottomed cylinder whose left end side is closed in FIG. 8, a base end side is inserted into a hollow portion of the shaft 155, and a tip end side slides on an inner wall surface of the cylinder portion 152. A hollow sliding member 156 and a spacer 157 inserted inside the sliding member 156 are combined.

A flange 155a is formed on the outer periphery of the left end of the shaft 155 in FIG. A coil spring 158 is interposed between the collar portion 155a and the step portion 153 described above. The coil spring 158 biases the piston 154 to the left in FIG. Further, a recess 155b is formed on the left end surface of the shaft 155 in FIG. A working end 162 of a manual lever 160, which will be described later, is in swingable contact with the recess 155b.

A manual lever 160 is provided on the left side of the pressure pump 150 in FIG. 8. The manual lever 160 is provided with a swing shaft on the ejection head 170, and by pressing the operating end 161, the manual lever 160 swings in the arrow P direction in FIG. 8 between the deployed position and the tightening position (see FIG. 1). It is configured. The manual lever 160 is provided with a working end 162, and the tip of the working end 162 is in swingable contact with the recess 155b described above.

The ejection head 170 includes a head body 171 that is formed in a horizontally long shape and is integrated with the upper portion of the outer cylinder portion 151 described above. A flow path 172 for the liquid L is formed inside the head body 171. The lower end of the flow path 172 communicates with the upper end of the pipe support portion 143. The nozzle structure 180 is detachably attached to the head body 171.

A check valve 184 is provided on the tip end side of the flow path 172, and is biased by a compression coil spring in a direction of closing the flow path 172. As a result, the liquid L that has been pressurized by the pressure pump 150 and has reached the tip of the flow path 172 is passed toward the nozzle 183, which will be described later. The check valve 184 prevents the liquid L that has passed toward the nozzle 183 from flowing back into the flow path 172.

The nozzle structure 180 includes a cylindrical nozzle body 181, a nozzle flow path 182 formed in the nozzle body 181, and a nozzle 183 attached to the tip of the nozzle flow path 182.

In the trigger-type sprayer 100 configured as described above, the pressurizing pump 150 operates by repeating the operation of gripping the manual lever 160 and the operation of releasing the manual lever 160, and the liquid L is sucked from the container main body 121 and pressurized, so that the nozzle 183 is pressed. Is spouted from the outside. In addition, the amount of the liquid L reduced from the inside of the container body 121 takes in air from the outside through the air flow path 142a and the outer cylinder portion 151. Since the air passage 142a has a very small diameter, even if the container body 121 is tilted, a large amount of the liquid L does not flow out from the air passage 142a.

JP2012-157817A JP, 2000-176332, A

The atomizer having the above-mentioned piston-cylinder type or trigger type pressurizing structure has the following problems. That is, when the liquid L is a sodium hypochlorite solution or a liquid having a strong acid or strong alkalinity and corroding a metal (hereinafter, referred to as “metal corrosive liquid”), it is shown in FIG. When the container body 121 is tilted from such an air flow path 142b, the liquid L may slightly flow out to the outer cylinder portion 151, and the coil spring may come into contact with the metal corrosive liquid during use. For this reason, the corrosion gradually progresses and may eventually be damaged. Therefore, there is a problem that it is difficult to extend the life of the sprayer.

On the other hand, a structure in which a spring is provided at a position separated from the pump mechanism or a spring is provided in a closed space is also conceivable, but the length and diameter of the spring become large, which shortens the service life, and the pump mechanism becomes complicated, resulting in a sprayer. However, there is a problem such as an increase in size.

Further, the atomizer is entirely formed of resin or the like of the same material in order to reduce costs and simplify the manufacturing process. However, the required material is not necessarily the same for a portion such as a pump mechanism that requires high quality such as wear resistance, and other portions, and usability and durability may deteriorate.

Therefore, the present invention can use an appropriate material for each part, prevent liquid such as metal corrosive liquid from contacting metal parts such as springs, prolong the life of the parts, and It is an object of the present invention to provide a trigger type sprayer which can ensure reliability.

The trigger type sprayer according to the present embodiment includes a storage container having an opening for storing a metal corrosive liquid , and an attachment portion detachably attached to the opening of the storage container and formed of a first material. A suction pipe having a tip extending from the mounting portion into the storage container, a flow path provided at the mounting portion and connected to the other end side of the suction pipe, and integrally with the mounting portion. An outer cylinder portion that is provided with its bottom side facing the flow path side, and that is provided so as to be coaxial with the outer cylinder portion and insertable and removable, and that the outer peripheral wall is the inner peripheral wall of the outer cylinder portion. A cylinder portion formed of a second material , which is an engineering plastic having wear resistance and slipperiness different from the first material, which is disposed with a gap and has an opening portion connected to the flow path side at the bottom portion; The piston is slidably inserted into and removed from the bottom portion of the cylinder portion, and is provided between the outer peripheral wall of the cylinder portion and the inner peripheral surface of the outer cylinder portion, and the gap and the cylinder are provided. An O-ring for liquid-tightly partitioning the opening side of the portion, a manual lever attached to the base end side of the piston for reciprocating the piston, and a flange portion provided on the base end side of the piston, a flange portion disposed between the distal end portion of the cylinder portion, said piston and a metal material made of spring you urged to escape from the cylinder portion, provided in said mounting portion, said container An air flow path communicating with the outer cylinder portion and a nozzle connected to the flow path are provided.

According to the present invention, it is possible to use an appropriate material for each part, prevent a liquid such as a corrosive liquid from contacting a metal part such as a spring, prolong the life of the part, and It becomes possible to secure reliability.

FIG. 1 is a vertical sectional view showing a trigger sprayer according to an embodiment of the present invention. FIG. 2 is a vertical cross-sectional view showing a pump unit incorporated in the trigger sprayer. FIG. 3 is a cross-sectional view showing the pump section. FIG. 4 is a vertical cross-sectional view showing a pressurized state in the pump section. FIG. 5: is a cross-sectional view which shows the pressurization state in the same pump part. FIG. 6 is a side view showing a cylinder incorporated in the pump unit. FIG. 7 is a cross-sectional view showing the cylinder. FIG. 8 is a vertical cross-sectional view showing an example of the trigger sprayer.

A trigger sprayer 10 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 7. In addition, L in the drawing indicates, for example, an aqueous solution of sodium hypochlorite for sterilization, and a metal corrosive liquid such as strong acid or strong alkaline. Further, the members constituting the trigger sprayer 10 are made of polyethylene-based synthetic resin unless otherwise specified. The polyethylene-based synthetic resin material has high chemical resistance, is flexible, and has a long life. It is also inexpensive.

The trigger sprayer 10 includes a container 20 made of a resin material for containing the liquid L, and a trigger type pressure structure (manually operated pressure structure) 30 detachably attached to the upper part of the container 20. I have it.

The storage container 20 includes a container main body 21 for storing the metal corrosive liquid L, and an opening 22 provided on the container main body 21 and having an external thread 22a formed on the outer peripheral portion thereof.

The trigger type pressure structure 30 includes a mounting portion 40 detachably attached to the container body 21, a pressure pump 50 integrally provided on the upper portion of the mounting portion 40, and the pressure pump 50. It is provided with a manual lever 80 and an ejection head 90 which is integrally provided on the upper portion of the pressurizing pump 50.

The mounting portion 40 is provided with a cylindrical large diameter mounting large diameter portion 41 and a cylindrical small diameter mounting small diameter portion 42. On the inner wall surface of the mounting large diameter portion 41, a female screw 41a that is screwed into the above-mentioned male screw 22a is formed. A female screw 42 a is formed on the inner wall surface of the mounting small diameter portion 42.

A tubular pipe support portion 43 is inserted into the mounting small diameter portion 42. The pipe supporting portion 43 is formed with a male screw 43 a on the outer circumference of the pipe supporting portion 43. A sleeve 43b is formed inside the tube support portion 43. A proximal end side of the suction tube 44 is inserted into the sleeve 43b so as to be freely inserted and removed. The tip side of the suction tube 44 is inserted into the container body 21. As shown in FIGS. 2 and 3, a small diameter air passage 42b is formed in the mounting small diameter portion 42. The air flow path 42b communicates with a gap Sa between an inner peripheral surface of the outer cylinder portion 51 and an outer peripheral surface of the cylinder unit 60, which will be described later.

A ball valve 45 is formed on the upper portion of the sleeve 43b. The ball valve 45 is arranged on the valve seat 45a formed on the inner wall surface of the sleeve 43b, the through hole 45b formed at the center of the valve seat 45a, and the valve seat 45a, and is larger than the inner diameter of the through hole 45b. And a spherical body (valve body) 45c made of a ceramic material having a diameter.

As shown in FIGS. 2 and 3, the pressure pump 50 has an outer cylinder portion 51 having a cylindrical space. Inside the outer cylinder portion 51, a cylinder unit 60 and a piston unit 70 are inserted in series from the right end side in FIGS.

The axial length of the cylinder unit 60 is formed to be approximately half the axial length of the outer tubular portion 51. The cylinder unit 60 includes a cylindrical cylinder body 61. A plurality of ribs (projections) 62 are formed on the cylinder body 61 along the outer peripheral direction. The rib 62 has a function of improving the strength of the cylinder body 61 and forming a gap Sa between the outer peripheral surface of the cylinder body 61 and the inner peripheral surface of the outer tubular portion 51. The rib 62 holds the O-ring 63 and the O-ring 64.

The opening 61a on the left end side in FIG. 2 of the cylinder body 61 is provided with an enlarged diameter portion 61b whose inner diameter is slightly increased. A bottom lid 65 is attached to the opening 61c on the right end side of the cylinder body 61 in FIG. A small-diameter hole 65a is formed in the center of the bottom cover 65.

An engagement portion 67 is formed on the bottom lid 65 so as to project toward the flow path 92. The engagement portion 67 may be locked by a pin (not shown) so that the cylinder body 61 does not come off from the outer cylinder portion 51.

As shown in FIGS. 3, 5, 6, and 7, air holes 69 are formed between the ribs 62 on the outer peripheral wall of the cylinder body 61. The air hole 69 communicates the gap Sa with the inside of the cylinder body 61.

The position of the air hole 69 is a position (see FIG. 3) that is closed by the outer circumference of the piston 71 when the piston 71 is extended (a deployed position where the hand is released from the manual lever), and when the piston 71 is compressed ( In the tightening position where the manual lever is gripped), the position (see FIG. 5) faces the outer circumference of the shaft 72. The outer peripheral surface of the shaft 72 is not fitted to the inner peripheral surface of the cylinder body 61 and is not airtight. Therefore, there is a slight gap between the outer peripheral surface of the shaft 72 and the inner peripheral surface of the cylinder body 61, and air can flow therethrough.

With such a configuration, the air holes 69 are closed and opened as the piston 71 expands and compresses. Specifically, when the piston 71 is extended, the air hole 69 does not allow anything to flow. When the piston 71 is compressed, the air hole 69 allows the outer peripheral side of the shaft 72 to communicate with the clearance Sa, and the outside air enters the clearance Sa through the air hole 69.

The cylinder body 61 is made of engineering plastic (second material) having wear resistance and slipperiness. Specifically, it is formed of PPS (polyphenylene sulfide) resin or the like. The PPS resin has excellent chemical resistance, good slipperiness, and excellent wear resistance.

The piston unit 70 is made of PPS resin. The piston unit 70 includes a cylindrical piston 71, a bottomed cylindrical shaft 72 whose left end in FIG. 2 is closed, and a proximal end inserted into a hollow portion of the shaft 72. A hollow sliding member 73, the tip side of which slides on the inner wall surface of the cylinder body 61, and a spacer 74 inserted into the sliding member 73 are combined.

A collar portion 72a is formed on the outer periphery of the left end of the shaft 72 in FIG. A coil spring 75 is interposed between the flange portion 72a and the expanded diameter portion 61b described above. The coil spring 75 biases the piston 71 to the left in FIG. Further, a recess 72b is formed on the left end surface of the shaft 72 in FIG. A working end 82 of a manual lever 80, which will be described later, is in swingable contact with the recess 72b.

A manual lever 80 is provided on the left side of the pressurizing pump 50 in FIG. The manual lever 80 is provided with a swing shaft on the ejection head 90, and presses the operating end 81 to move between the deployed position (see FIG. 2) and the tightening position (see FIG. 4) in the direction of arrow P in FIG. It is configured to swing. The manual lever 80 is provided with a working end 82, and the tip of the working end 82 is in swingable contact with the above-mentioned recess 55b. In the tightening position of the manual lever 80, as shown in FIG. 2, the sliding member 56 is sized to be brought close to the bottom portion of the cylinder unit 60, and the collar portion 72a does not contact the outer cylinder portion 51.

The ejection head 90 includes a head body 91 which is formed in a horizontally long shape and is integrated with the upper portion of the outer cylinder portion 51 described above. A flow path 92 for the liquid L is formed inside the head body 91. The lower end of the flow path 92 communicates with the upper end of the pipe support portion 43. A nozzle structure 85 is detachably attached to the head body 91.

A check valve 99 is provided on the tip end side of the flow passage 92, and is biased by a compression coil spring in a direction of closing the flow passage 92. As a result, the liquid L, which has been pressurized by the pressure pump 50 and has reached the tip of the flow path 92, passes toward the nozzle 98, which will be described later. The check valve 84 prevents the liquid L that has passed toward the nozzle 83 from flowing back into the flow passage 92.

The nozzle structure 95 includes a cylindrical nozzle body 96, a nozzle flow passage 97 formed in the nozzle body 96, and a nozzle 98 attached to the tip of the nozzle flow passage 97.

The trigger sprayer 10 configured as described above sprays the liquid L as follows. That is, the mounting large-diameter portion 41 of the trigger-type pressure structure 30 is removed from the container body 21, and the liquid L is put into the inside through the opening 22. Next, the mounting large diameter portion 41 is screwed into the container body 21 and fixed.

When the manual lever 80 of the trigger-type pressure structure 30 is released (deployed position), the piston 71 is projected from the cylinder unit 60 by the urging force of the coil spring 75 as shown in FIG. At this time, the air hole 69 is closed by the outer periphery of the piston 71, and the air hole 69 does not flow.

Next, when the manual lever 80 is gripped, the working end 82 presses the recess 72b of the piston 71, as shown in FIG. As a result, the piston 71 is inserted into the cylinder body 61 against the biasing force of the coil spring 75. The manual lever 80 stops at the tightening position. At this time, due to the action of the ball valve 45, the air in the cylinder unit 60 is ejected from the nozzle 98 to the outside through the flow passage 92 and the nozzle flow passage 97 without heading to the container body 21 side.

At this time, the air hole 69 faces the outer periphery of the shaft 72, as shown in FIG. Therefore, the outer peripheral side of the shaft 72 communicates with the gap Sa, and the outside air enters the gap Sa through the air holes 69. Since the gap Sa communicates with the container body 21, the inside of the container body 21 is at atmospheric pressure.

Next, when the manual lever 80 is released, the piston 71 projects from the cylinder body 61 due to the biasing force of the coil spring 75, and the inside of the cylinder body 61 becomes negative pressure (less than atmospheric pressure). As a result, the ball valve 45 is opened, the liquid L is sucked up from the container body 21 via the suction pipe 44, and is introduced into the cylinder unit 60 via the flow path 92. The interior of the container main body 21 becomes a negative pressure as much as the liquid L is reduced.

Next, when the manual lever 80 is gripped, the working end 82 presses the concave portion 72b of the piston 71. As a result, the piston 71 is inserted into the cylinder unit 60 against the biasing force of the coil spring 75 and pressurizes the liquid L. At this time, due to the action of the ball valve 45, the liquid L is ejected from the nozzle 98 to the outside through the flow passage 92 and the nozzle flow passage 97 without going to the container body 21 side.

As described above, the outer peripheral side of the shaft 72 communicates with the clearance Sa, and the outside air enters the clearance Sa through the air holes 69. Since the inside of the container main body 21 has a negative pressure, air flows into the container body 21 and becomes atmospheric pressure.

The liquid L can be ejected intermittently from the nozzle 98 by repeating such an operation of gripping and releasing the manual lever 80 (that is, reciprocation between the deployed position and the tightened position).

It should be noted that when the liquid L jets out and the inside of the container main body 21 becomes a negative pressure, the liquid L becomes difficult to jet out, so that it is necessary to take in the jetted air of the volume from the outside. As described above, since it does not flow in from the side of the flow passage 92 due to the action of the ball valve 45, air is taken in from the outside through the air flow passage 42b provided in the small mounting portion 42 and the pressurizing pump 50 described above. Since the air passage 42b has a very small diameter, even if the container body 21 is tilted, a large amount of the liquid L does not flow out from the air passage 42b.

Next, a structure in which the coil spring 75 of the pressurizing pump 50 does not contact the liquid L will be described. If the liquid L is a metal corrosive liquid, the coil spring 75 may be corroded. When the trigger sprayer 10 is placed upright, the liquid L hardly flows into the pressurizing pump 50. On the other hand, when the container body 21 is tilted, the liquid L may flow out little by little through the air flow path 42b. When the liquid L flows out of the container body 21, the inside of the container body 21 has a negative pressure and does not continue to flow out.

When the liquid L little by little flows from the container body 21 to the pressurizing pump 50 via the air flow path 42b, the liquid L reaches the gap Sa between the outer cylinder part 51 and the cylinder unit 60. However, since the O-ring 64 is formed around the cylinder unit 60, the liquid L does not leak from the gap Sa to the coil spring 75 side, and the liquid L does not contact the coil spring 75.

As described above, in the trigger-type sprayer 10 according to the present embodiment, even when the coil spring 75 has a small diameter in order to have a long life and the axial length is shortened and the coil spring 75 is arranged around the piston 71. The O-ring 64 prevents the liquid L, which is a metal corrosive liquid, from touching, and prevents the life of the coil spring 75 from being shortened.

Further, since the cylinder body 61 can be formed of PPS resin having excellent wear resistance, usability and durability are not deteriorated even if other parts are made of inexpensive materials.

In the above-described embodiment, a metal corrosive liquid is illustrated as the liquid L, but the present invention is also applicable to liquids having no corrosiveness such as detergents and water other than the metal corrosive liquid.

The invention of the present application is not limited to the above-described embodiment, and can be variously modified in an implementation stage without departing from the scope of the invention. Further, the respective embodiments may be combined as appropriate as much as possible, in which case the combined effects can be obtained. Further, the embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent elements are deleted from all the constituent elements shown in the embodiment, the problem described in the section of the problem to be solved by the invention can be solved, and the effect described in the section of the effect of the invention When the above is obtained, the configuration in which this constituent element is deleted can be extracted as the invention . The inventions described in the initial claims of the present application will be additionally described below.
[1] An accommodating container having an opening for accommodating a liquid, an attachment part detachably attached to the opening of the accommodating container and formed of a first material, and the attaching part from the inside of the accommodating container A suction pipe having its tip extended to the attachment part, a flow passage provided on the attachment part, and connected to the other end side of the suction pipe, and integrally provided on the attachment part, with the bottom side being on the flow passage side. An outer cylinder portion provided toward the outer cylinder portion, and the outer cylinder portion is provided coaxially with the outer cylinder portion so as to be insertable and removable, and the outer peripheral wall is arranged with a gap between the inner peripheral wall of the outer cylinder portion and the flow path side at the bottom portion. A cylinder portion formed of a second material different from the first material having an opening connected to the piston; and a piston slidably inserted and removed with its tip facing the bottom portion of the cylinder portion, A manual lever attached to the base end side of the piston to reciprocate the piston, a flange portion provided on the base end side of the piston, and arranged between the flange portion and the tip end portion of the cylinder portion. And a coil spring for urging the piston in a direction to be removed from the cylinder portion, an air flow passage provided in the mounting portion and communicating between the storage container and the outer cylinder portion, and connected to the flow passage. And a triggered sprayer.
[2] The trigger sprayer according to [1], wherein the liquid is a metal corrosive liquid, and the coil spring is made of a metal material.
[3] The trigger sprayer according to [1], wherein the first material is a polyethylene resin and the second material is an engineering plastic having wear resistance and slipperiness.
[4] A hole penetrating from the outer peripheral side to the inner side in the cylinder portion, and a protrusion formed in the outer peripheral side along the circumferential direction to form a space between the outer cylindrical portion and the outer periphery of the cylinder portion. And an air flow path communicating with the space and the storage container, the hole portion is a closed position by the piston due to an inserting/removing operation of the piston with respect to the cylinder portion, the space and the external space. The trigger sprayer according to [1], which is formed at a position that enables switching to the flow position of the.

DESCRIPTION OF SYMBOLS 10... Trigger type sprayer, 20... Storage container, 21... Container main body, 22... Opening part, 22a... Male screw, 30... Trigger type pressurization structure (manual operation pressurization structure), 40... Attachment part, 41... Mounting large diameter part, 41a... Female screw, 42... Mounting small diameter part, 42a... Female screw, 42b... Air flow path, 43... Pipe support part, 43a... Male screw, 43b... Sleeve, 44... Suction pipe, 45... Ball Valve, 45a... Valve seat, 45b... Flow hole, 45c... Sphere (valve body), 50... Pressurizing pump, 51... Outer cylinder part, 56... Sliding member, 60... Cylinder unit, 61... Cylinder body, 61b ... expanded part, 62... rib (projection), 63... O ring, 64... O ring, 65... bottom lid, 65a... hole part, 67... engaging part, 69... air hole, 70... piston unit, 71 ... Piston, 72... Shaft, 72a... Collar portion, 72b... Recessed portion, 73... Sliding member, 74... Spacer, 75... Coil spring, 80... Manual lever, 81... Operating end, 82... Working end, 83... Nozzle, 84 ... check valve, 85... nozzle structure, 90... ejection head, 91... head body, 92... flow path, 95... nozzle structure, 96... nozzle body, 97... nozzle flow path, 98... nozzle, 99... reverse Stop valve.

Claims (3)

A storage container having an opening for storing a metal corrosive liquid ,
An attachment portion detachably attached to the opening of the container and formed of a first material;
A suction tube whose tip extends from the mounting portion into the storage container,
A flow path provided on the mounting portion, to which the other end of the suction pipe is connected,
An outer cylinder part provided integrally with the mounting part, the bottom side of which is provided toward the flow path side,
The outer cylinder is provided coaxially with the outer cylinder so that it can be inserted into and removed from the outer cylinder, the outer peripheral wall is arranged with a gap between the inner peripheral wall of the outer cylinder, and the bottom has an opening connected to the flow path side. A cylinder part made of a second material , which is an engineering plastic having wear resistance and slippage different from that of the first material;
An O-ring, which is provided between the outer peripheral wall of the cylinder portion and the inner peripheral surface of the outer cylinder portion and liquid-tightly partitions the gap and the opening side of the cylinder portion,
A piston that is slidably inserted and removed with its tip facing the bottom of the cylinder section;
A manual lever attached to the base end side of the piston to reciprocate the piston,
A collar portion provided on the base end side of the piston,
And the flange portion is disposed between the tip portion of the cylinder portion, and the metallic co Irubane you urged in the direction of disengaging the piston from the cylinder portion,
An air flow path provided in the mounting portion, which communicates between the storage container and the outer tubular portion,
A trigger-type sprayer comprising: a nozzle connected to the flow path. Wherein the first material is a trigger sprayer according to claim 1, wherein the polyethylene resin. In the cylinder portion, a hole portion that penetrates from the outer peripheral side to the inner side,
A ridge formed along the circumferential direction on the outer peripheral side and forming a space between the outer cylinder part and the outer periphery of the cylinder part,
An air flow path communicating with the space and the storage container,
The hole is formed at a position that allows switching between a closed position by the piston and a flow position between the space and the external space by inserting and removing the piston into and from the cylinder. Trigger type sprayer described in.