Upright and inverted pistol pump

Abstract

The utility model discloses an upright and inverted pistol pump which comprises a pump body, a liquid spraying channel is arranged in the pump body, a liquid outlet channel and a liquid inlet channel which are vertically separated are arranged in the pump body, the liquid outlet channel is communicated with the liquid spraying channel, and a liquid guiding cavity is arranged on the side of the liquid outlet channel and the side of the liquid inlet channel. The upper portion of the liquid guide cavity is always communicated with the liquid outlet channel through a normal opening, a suction plug is arranged in the liquid guide cavity, a trigger capable of driving the suction plug to do left-right piston motion in the liquid guide cavity is hinged to the pump body, and an elastic arm capable of abutting against the pump body and driving the trigger to drive the suction plug to reset is arranged on the trigger. And an inverted spraying device for realizing forward spraying and inverted spraying functions of the pistol pump is inserted into one side, facing the liquid container, of the liquid inlet channel. Due to the fact that the inverted spraying device is additionally arranged, the function of spraying liquid in the liquid container can be achieved when the pistol pump is in an upright state or an inverted state. In addition, a ventilation non-return device is further integrated in the inverted spraying device, and the internal structure is effectively simplified while the normal ventilation and liquid feeding functions are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pistol pump related technical field, especially a kind of right and upside-down pistol pump. BACKGROUND

[0002] Pistol pump is a kind of spray pump fixed on container, when using, it is made to enter the liquid in bottle into pump body inside and is sprayed according to predetermined form by trigger according to predetermined number of times, has been widely applied in medicine, daily use chemical, industry etc.

[0003] The pistol pump design on market currently, only allow when container remains vertical and pump head is positive (i.e. pistol pump is in right position), liquid in bottle is successfully released by pressing trigger. Conversely, when needing to spray to lower position, in the state of holding container upside down (i.e. pistol pump is in upside-down position), even if trigger is pressed, it cannot be normally used.

[0004] The utility model is made based on this situation. UTILITY MODEL CONTENT

[0005] The utility model aims at overcoming the insufficient of prior art, provide a kind of right and upside-down pistol spray pump, with the characteristics of simple structure, can be realized in right and upside-down state both container liquid spray.

[0006] The utility model provides a kind of right and upside-down pistol pump to solve its technical problem, and the technical scheme is:

[0007] A kind of right and upside-down pistol pump, including pump body, the pump body is equipped with liquid spray channel, the pump body is equipped with the liquid outlet channel and liquid inlet channel separated upwards and downwards, wherein the liquid outlet channel is communicated with liquid spray channel, liquid guide cavity is equipped in the side of liquid outlet channel and liquid inlet channel, the upper portion of liquid guide cavity is always communicated with liquid outlet channel by normally open port, suction plug is equipped in the liquid guide cavity, trigger that can drive suction plug to make left-right piston movement in liquid guide cavity is hinged on the pump body, the trigger is equipped with elastic arm that can be pressed on the pump body and drive trigger to drive suction plug reset, longitudinal one-way valve that only supplies liquid from liquid outlet channel to liquid spray channel is equipped between the liquid outlet channel and liquid spray channel, lateral one-way valve that can open and connect liquid guide cavity and liquid inlet channel when suction plug resets movement is equipped between liquid guide cavity and liquid inlet channel, air inlet for making outside air enter liquid container is equipped on the pump body, the side of liquid inlet channel towards liquid container is inserted with upside-down spray device that realizes right and upside-down pistol pump right spray, upside-down spray function.

[0008] Preferably, the reverse spraying device comprises a universal seat which is clamped with the liquid inlet channel, the universal seat is provided with a liquid inlet opening which is communicated with the liquid inlet channel on one side of the pump body, and is provided with a normal liquid inlet channel on the other side; the universal seat is further provided with a one-way reverse spraying valve and a side liquid inlet hole, the one-way reverse spraying valve is provided with an inverted liquid inlet channel inside, the liquid inlet opening, the normal liquid inlet channel and the inverted liquid inlet channel are communicated with each other, and the one-way reverse spraying valve is used for controlling the on-off between the side liquid inlet hole and the inverted liquid inlet channel.

[0009] Preferably, the one-way reverse spraying valve comprises a reverse spraying valve seat and a pump bead which is movably arranged inside the reverse spraying valve seat, in the normal state of the hand gun pump, the pump bead blocks the communication between the inverted liquid inlet channel and the side liquid inlet hole, and the liquid in the liquid container can only enter the liquid inlet channel through the liquid inlet opening via the normal liquid inlet channel; in the inverted state of the hand gun pump, the inverted liquid inlet channel is communicated with the side liquid inlet hole, and the liquid in the liquid container can enter the liquid inlet channel through the liquid inlet opening via the inverted liquid inlet channel.

[0010] Preferably, the inner side wall of the reverse spraying valve seat is provided with a first protruding abutting portion, and the first protruding abutting portion is abutted with the pump bead in the inverted state of the hand gun pump.

[0011] Preferably, the reverse spraying device is provided with a gas exchange check device, the gas exchange check device comprises a gas exchange valve seat and a gas exchange check bead which is movably arranged inside the gas exchange valve seat, the gas exchange valve seat is provided with a gas exchange channel inside, the gas exchange channel is communicated with the air inlet opening, and the gas exchange channel and the air inlet opening jointly form a gas channel, and the gas exchange check bead is used for controlling the on-off between the gas exchange channel and the inside of the liquid container.

[0012] Preferably, the inner side wall of the gas exchange valve seat is provided with a second protruding abutting portion, and the second protruding abutting portion is abutted with the gas exchange check bead in the normal state of the hand gun pump.

[0013] Preferably, the lower end of the pump body is connected with a bottle locking cap which is used for connecting with the liquid container, and a sealing ring is arranged between the bottle locking cap and the pump body.

[0014] Preferably, the pump body is inserted with a nozzle, the nozzle is communicated with the liquid spraying channel, and the front end of the nozzle is provided with a detachable spray head.

[0015] Preferably, the elastic arms are integrally injection molded with the trigger, the elastic arms are two and are respectively arranged on the left and right sides of the pump body, the elastic arms are upward protruding curved structures, the rear end of the elastic arms is provided with a clamping hook, and the rear part of the pump body is provided with a hook groove which is matched with the clamping hook.

[0016] Preferably, the whole hand gun pump is made of plastic material.

[0017] Compared with the prior art, the utility model has the beneficial effects that

[0018] 1. The utility model adds the reverse spraying device, under the normal state of the pistol pump, the liquid in the liquid container enters the pistol pump through the normal liquid inlet channel of the reverse spraying device to complete normal spraying, under the upside-down state of the pistol pump, the liquid in the liquid container can enter the pistol pump through the upside-down liquid inlet channel to complete reverse spraying, in addition, the reverse spraying device also integrates the air exchange check valve, which effectively simplifies the internal structure while ensuring normal air exchange and liquid functions.

[0019] 2. All parts of the utility model are plastic materials, which can be recycled without disassembly and separation, reducing the difficulty and cost of recycling and utilization, and being environmentally friendly and energy-saving.

[0020] 3. By setting the lateral check valve between the liquid introduction cavity and the liquid inlet channel, when the suction plug moves outward, the volume of the liquid introduction cavity increases, negative pressure is generated, and directly acts on the lateral check valve, opens the lateral check valve, and the liquid in the liquid container enters the liquid introduction cavity through the suction pipe and the liquid inlet channel, and the liquid inlet efficiency is high. When the trigger is pressed, the solution in the liquid introduction cavity can quickly push the lateral check valve to close, avoiding the backflow of the liquid into the liquid container, and the always-open port is connected with the liquid introduction cavity and the liquid outlet channel, which can increase the explosive force of the solution flowing from the liquid introduction cavity to the liquid outlet channel when the trigger is pressed. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the overall structure schematic view of the utility model;

[0022] Figure 2 It is the sectional view of the utility model;

[0023] Figure 3 It is the exploded structure schematic view of the utility model;

[0024] Figure 4 It is the structure schematic view of the universal seat in the utility model;

[0025] Figure 5 It is the sectional view of the universal seat when the pistol pump is normal in the utility model;

[0026] Figure 6 It is the sectional view of the universal seat when the pistol pump is upside down in the utility model; Figure 5

[0027] Figure 7 It is the sectional view of the universal seat when the pistol pump is upside down in the utility model;

[0028] Figure 8 It is the sectional view of the universal seat when the pistol pump is upside down in the utility model; Figure 7

[0029] ​​Figure 9 is a structure schematic diagram of the present utility model when the pistol pump is right spraying;

[0030] Figure 10 is a structure schematic diagram of the present utility model when the pistol pump is upside down spraying. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings.

[0032] With reference to Figures 1 to 3 , the present utility model discloses a kind of right upside-down pistol pump, including pump body 1, spray liquid passage 11 is equipped in pump body 1, upper and lower separation outlet liquid passage 12 and liquid inlet passage 13 are equipped in pump body 1, wherein outlet liquid passage 12 is communicated with spray liquid passage 11, liquid guide cavity 14 is equipped in the side of outlet liquid passage 12 and liquid inlet passage 13, the upper portion of liquid guide cavity 14 is always communicated with outlet liquid passage 12 by normally open port 15, suction plug 3 is equipped in liquid guide cavity 14, trigger 4 that can drive suction plug 3 in liquid guide cavity 14 do left and right piston movement is hinged on pump body 1, pop arm 41 that can be pressed on pump body 1 and drive trigger 4 to drive suction plug 3 reset is equipped on trigger 4, longitudinal one-way valve 5 that only supplies liquid from outlet liquid passage 12 to spray liquid passage 11 is equipped between outlet liquid passage 12 and spray liquid passage 11, lateral one-way valve 6 that can open and connect liquid guide cavity 14 and liquid inlet passage 13 when suction plug 3 reset movement is equipped between liquid guide cavity 14 and liquid inlet passage 13, air inlet 16 for making external air enter liquid container is equipped on pump body 1, one realizes pistol pump right spraying, upside-down spraying function's upside-down spraying device is inserted on the side of liquid inlet passage 13 towards liquid container.

[0033] As Figure 2 shown, upside-down spraying device is communicated with suction tube 9 inserted in liquid container, by being provided with lateral one-way valve 6 between liquid guide cavity 14 and liquid inlet passage 13, when pop arm 41 pops trigger 4 and makes suction plug 3 move outward, liquid guide cavity 14 volume becomes larger, generates negative pressure, and directly acts on lateral one-way valve 6, so that lateral one-way valve 6 opens, so that the liquid in liquid container enters liquid guide cavity 14 through suction tube 9, upside-down spraying device, liquid inlet passage 13, and the liquid inlet efficiency is high.And when trigger 4 is pressed, under the push of suction plug 3, the solution in liquid guide cavity 14 can also quickly push lateral one-way valve 6 to close, to avoid liquid backflow to liquid container;And always connect liquid guide cavity 14 and outlet liquid passage 12 by normally open port 15, when trigger 4 is pressed, can increase the explosive force when solution flows from liquid guide cavity 14 to outlet liquid passage 12, beneficial to improve the explosive force of spray.

[0034] As Figure 2 , Figures 4 to 8As shown, the reverse injection device comprises a universal seat 7 connected with the liquid inlet channel 13, the universal seat 7 is provided with a liquid inlet 71 connected with the liquid inlet channel 13 on one side of the pump body 1, and is provided with a normal liquid inlet channel 72 on the other side; the universal seat 7 is further provided with a one-way reverse injection valve 73 and a side liquid inlet hole 74, the one-way reverse injection valve 73 is provided with an inverted liquid inlet channel 731 inside, the liquid inlet 71, the normal liquid inlet channel 72 and the inverted liquid inlet channel 731 are in communication, and the one-way reverse injection valve 73 is used for controlling the on-off between the side liquid inlet hole 74 and the inverted liquid inlet channel 731.

[0035] As shown in Figure 2 , Figure 5 , Figure 7 , Figure 9 and Figure 10 , the one-way reverse injection valve 73 comprises a reverse injection valve seat 732 and a pump bead 733 movably arranged inside the reverse injection valve seat 732, in the normal state of the hand gun pump, the pump bead 733 blocks the port of the reverse injection valve seat 732 under the action of gravity, and the communication between the inverted liquid inlet channel 731 and the side liquid inlet hole 74 is blocked, the liquid in the liquid container can only enter the liquid inlet channel 13 through the liquid inlet 71 via the normal liquid inlet channel 72, and then enter the liquid guiding cavity 14 via the liquid inlet channel 13; in the inverted state of the hand gun pump, the pump bead 733 leaves the port of the reverse injection valve seat 732 under the action of gravity, the inverted liquid inlet channel 731 is in communication with the side liquid inlet hole 74, and the liquid in the liquid container can enter the liquid inlet channel 13 through the liquid inlet 71 via the inverted liquid inlet channel 731.

[0036] As shown in Figure 5 and Figure 7 , the inner side wall of the reverse injection valve seat 732 is provided with a first abutting portion 734 protruding, in the inverted state of the hand gun pump, the pump bead 733 leaves the port of the reverse injection valve seat 732 under the action of gravity, the first abutting portion 734 abuts against the pump bead 733, and the pump bead 733 is limited, so as to avoid the pump bead 733 from falling out of the reverse injection valve seat 732.

[0037] As shown in Figures 5 to 8As shown, the back spray device is provided with a ventilation check device 75, which includes a ventilation valve seat 751 and a ventilation check ball 752 movably arranged in the ventilation valve seat 751, and the ventilation valve seat 751 is provided with a ventilation passage 753; the ventilation passage 753 is connected with the air inlet 16 to form a gas passage together, and the ventilation check ball 752 is used to control the connection or disconnection between the ventilation passage 753 and the inside of the liquid container. When the hand pump is used, the ventilation check ball 752 can reciprocate in the ventilation valve seat 751 under the action of gravity or air pressure to make the ventilation passage 753 connected or disconnected with the inside of the liquid container, so as to open or close the gas passage. When the gas passage is opened, the outside air can enter the inside of the liquid container through the ventilation passage 753 to form the air inlet or air return between the outside air and the inside of the liquid container, so as to increase or decrease the air pressure in the liquid container and form the equal pressure state with the outside, thereby ensuring the suction and spraying of the liquid.

[0038] As shown in Figures 5 to 8 , the inside wall of the ventilation valve seat 751 is provided with a second abutting portion 754, and in the upright state of the hand pump, the ventilation check ball 752 is away from the port of the ventilation valve seat 751 under the action of gravity, the second abutting portion 754 abuts against the ventilation check ball 752 to limit the pump ball 733, so as to avoid the ventilation check ball 752 from falling out of the ventilation valve seat 751.

[0039] As shown in Figure 2 and Figure 3 , the lower end of the pump body 1 is connected with a bottle locking cap 8 for connecting with the liquid container, and the bottle locking cap 8 is provided with a sealing ring 17 between the pump body 1, so as to seal the liquid in the liquid container and prevent the liquid from leaking.

[0040] The pump body 1 is inserted with a nozzle 2, which is connected with the liquid spraying passage 11, and the front end of the nozzle 2 is provided with a detachable spray head 21. In this embodiment, the spray head 21 is a spray head, which can realize the spraying effect. In actual application, the spray head 21 can be provided as a foaming spray head to realize the foam spraying. Since the spray head 21 is detachable, the spraying or foam spraying effect can be realized by replacing the spray head 21.

[0041] As shown in Figure 3 , the trigger arm 41 is integrally injection molded with the trigger 4, and the trigger arm 41 has two and is located on the left and right sides of the pump body 1 respectively. The trigger arm 41 is a curved structure protruding upward, and the rear end of the trigger arm 41 is provided with a clamping hook 42. The rear part of the pump body 1 is provided with a hook groove 19 matched with the clamping hook 42. The structure is simple, the number of parts is reduced, the manufacturing cost is reduced, and the assembly efficiency is improved.

[0042] The pistol pump is entirely made of plastic material, avoiding the corrosion problem caused by metal components such as metal springs, and the recovery of the pistol pump does not need to remove the metal components on the pistol pump, so the recovery efficiency is very high.

[0043] As shown in Figures 1 to 3 , in the embodiment, the pump body 1 is sleeved with the shell 18, and the pump body 1 is independent of the shell 18, and the independent design of the pump body 1 can realize matching different types of shells 18.

[0044] As shown in Figure 2 , Figure 5 , Figure 6 and Figure 9 , when the pistol pump is used in an upright state, the liquid container and the pistol pump are both in an upright position, and the pump bead 733 blocks the communication between the inverted liquid inlet channel 731 and the side liquid inlet hole 74; the air exchange check bead 752 is away from the port of the air exchange valve seat 751 under the action of gravity, and the gas channel is opened. When the trigger 4 is pressed, the trigger 4 will push the suction plug 3, so as to extrude the liquid in the liquid guiding cavity 14, and the liquid enters the liquid outlet channel 12 from the liquid guiding cavity 14 through the always-open hole 15, and then enters the liquid spraying channel 11 through the longitudinal one-way valve 5 from the liquid outlet channel 12, and finally is sprayed out through the nozzle 2. At this time, due to the spraying of the liquid, the pressure in the liquid container becomes smaller, the external air enters the air inlet 16, and then enters the air exchange channel 753 of the air exchange valve seat 751 through the gas channel, and then enters the inside of the liquid container, so that the internal pressure of the liquid container is consistent with the external atmospheric pressure, thereby facilitating the use of the pistol pump to draw the liquid in the liquid container. After the trigger 4 is released, the trigger 4 is pulled up by the elastic arm 41, so that the suction plug 3 moves outward, the volume of the liquid guiding cavity 14 becomes larger, a negative pressure is generated, and directly acts on the side one-way valve 6, so that the side one-way valve 6 is opened, the liquid in the liquid container is guided into the liquid guiding cavity 14 through the suction pipe 9 and the upright liquid inlet channel 72, and then enters the liquid guiding cavity 14 through the liquid inlet channel 13, a new liquid filling is completed, and the above steps are repeated, so that continuous spraying is realized.

[0045] As shown in Figure 7 , Figure 8 and Figure 10As shown, when the pistol pump is used in an inverted state, the liquid container and the pistol pump are both in an inverted position, and when the liquid container is not full of liquid, the liquid level in the liquid container is lower than the port of the suction pipe 9 under the influence of gravity, the liquid in the liquid container cannot flow into the suction pipe 9, and at this time, the position of the side liquid inlet hole 74 is lower than the liquid level in the liquid container, and the liquid in the liquid container flows to the side liquid inlet hole 74; the pump bead 733 is away from the port of the reverse injection valve seat 732 under the action of gravity, and the inverted liquid inlet channel 731 is communicated with the side liquid inlet hole 74; the air exchange check bead 752 is in abutment and sealing with the port of the air exchange valve seat 751 under the action of gravity, the gas channel is closed, and the liquid in the liquid container is prevented from flowing into the pump body 1 through the gas channel when the liquid container is inverted. When the trigger 4 is pressed, the trigger 4 pushes the suction plug 3, so as to extrude the liquid in the liquid guiding cavity 14, the liquid enters the liquid outlet channel 12 from the liquid guiding cavity 14 through the always-open port 15, and then enters the liquid injection channel 11 from the liquid outlet channel 12 through the longitudinal one-way valve 5, and finally is sprayed out through the nozzle 2. At this time, due to the spraying of the liquid, the pressure in the liquid container becomes small, and the external air enters the air inlet 16, at this time, the external air pressure at the air exchange valve seat 751 is higher than the internal air pressure, so that the air pressure lifts the air exchange check bead 752 to make the air exchange check bead 752 away from the port of the air exchange valve seat 751, the gas channel is opened, and then the air enters the air exchange channel 753 of the air exchange valve seat 751 through the gas channel, and then enters the liquid container, so that the internal air pressure of the liquid container is consistent with the external atmospheric pressure, thereby facilitating the use of the pistol pump to draw the liquid in the liquid container. After the trigger 4 is released, the air exchange check bead 752 falls back under the action of gravity and abuts and seals with the port of the air exchange valve seat 751, the gas channel is closed, and at the same time, the trigger 4 is lifted by the elastic arm 41 to make the suction plug 3 move outward, the volume of the liquid guiding cavity 14 becomes larger, a negative pressure is generated, and directly acts on the lateral one-way valve 6, so that the lateral one-way valve 6 is opened, the liquid in the liquid container enters the inverted liquid inlet channel 731 through the side liquid inlet hole 74, enters the liquid guiding cavity 14 through the liquid inlet channel 13, and completes a new liquid feeding, and the above steps are repeated, so that continuous spraying is realized.

[0046] The above is only a preferred embodiment of the utility model, and any technical solution that realizes the purpose of the utility model by basically the same means belongs to the protection scope of the utility model.

Claims

1. A right way up and upside down pistol pump characterised in that, The pump body (1) is provided with a liquid injection channel (11), an upper and lower separated liquid outlet channel (12) and a liquid inlet channel (13), wherein the liquid outlet channel (12) is communicated with the liquid injection channel (11), a liquid guide cavity (14) is arranged at the side of the liquid outlet channel (12) and the liquid inlet channel (13), the upper part of the liquid guide cavity (14) is always communicated with the liquid outlet channel (12) through a normally open port (15), a suction plug (3) is arranged in the liquid guide cavity (14), a trigger (4) is hinged on the pump body (1) and can drive the suction plug (3) to make left and right piston movements in the liquid guide cavity (14), the trigger (4) is provided with a spring arm (41) which can be pressed on the pump body (1) and drive the trigger (4) to drive the suction plug (3) to reset, a longitudinal one-way valve (5) is arranged between the liquid outlet channel (12) and the liquid injection channel (11) and only allows liquid to flow from the liquid outlet channel (12) to the liquid injection channel (11), a lateral one-way valve (6) is arranged between the liquid guide cavity (14) and the liquid inlet channel (13) and can open to communicate the liquid guide cavity (14) and the liquid inlet channel (13) when the suction plug (3) resets, an air inlet (16) is arranged on the pump body (1) and is used for allowing external air to enter a liquid container, and a reverse injection device is inserted on the side of the liquid inlet channel (13) towards the liquid container and is used for realizing normal injection and reverse injection functions of the hand gun pump.

2. A positive and negative pistol pump according to claim 1, characterized in that The reverse injection device comprises a universal seat (7) which is clamped with the liquid inlet channel (13), the universal seat (7) is provided with a liquid inlet port (71) communicated with the liquid inlet channel (13) on the side towards the pump body (1) and is provided with a normal liquid inlet channel (72) on the other side, the universal seat (7) is further provided with a one-way reverse injection valve (73) and a side liquid inlet hole (74), the one-way reverse injection valve (73) is provided with an inverted liquid inlet channel (731) inside, the liquid inlet port (71), the normal liquid inlet channel (72) and the inverted liquid inlet channel (731) are communicated with each other, and the one-way reverse injection valve (73) is used for controlling the on-off of the side liquid inlet hole (74) and the inverted liquid inlet channel (731).

3. A positive and negative pistol pump according to claim 2, characterized in that The one-way reverse injection valve (73) comprises a reverse injection valve seat (732) and a pump bead (733) movably arranged inside the reverse injection valve seat (732), in the normal state of the hand gun pump, the pump bead (733) blocks the communication between the inverted liquid inlet channel (731) and the side liquid inlet hole (74), and the liquid in the liquid container can only enter the liquid inlet channel (13) through the liquid inlet port (71) via the normal liquid inlet channel (72), in the inverted state of the hand gun pump, the inverted liquid inlet channel (731) is communicated with the side liquid inlet hole (74), and the liquid in the liquid container can enter the liquid inlet channel (13) through the liquid inlet port (71) via the inverted liquid inlet channel (731).

4. A reversible pistol pump according to claim 3, wherein The inner side wall of the reverse injection valve seat (732) is provided with a first abutting part (734), in the inverted state of the hand gun pump, the first abutting part (734) abuts with the pump bead (733).

5. A reversible pistol pump according to claim 1, wherein The back spray device is provided with a ventilation check device (75), which comprises a ventilation valve seat (751) and a ventilation check ball (752) movably arranged in the ventilation valve seat (751), the ventilation valve seat (751) is internally provided with a ventilation channel (753) in communication with the air inlet (16) to jointly form a gas channel, and the ventilation check ball (752) is used for controlling the ventilation channel (753) and the inside of the liquid container.

6. A positive and negative pistol pump according to claim 5, characterized in that The inner side wall of the ventilation valve seat (751) is provided with a convex second abutting portion (754), which abuts against the ventilation check ball (752) in the normal state of the hand gun pump.

7. A reversible pistol pump according to claim 1, wherein The lower end of the pump body (1) is connected with a bottle locking cap (8) for connecting with the liquid container, and a sealing ring (17) is arranged between the bottle locking cap (8) and the pump body (1).

8. A reversible pistol pump according to claim 1, wherein, The pump body (1) is inserted with a nozzle (2) in communication with the liquid spray channel (11), and the front end of the nozzle (2) is provided with a detachable spray head (21).

9. A reversible pistol pump according to claim 1, wherein, The elastic arms (41) are integrally injection molded with the trigger (4), the elastic arms (41) are two and are respectively arranged on the left and right sides of the pump body (1), the elastic arms (41) are upwardly convex curved structures, the rear end of the elastic arms (41) is provided with a clamping hook (42), and the rear part of the pump body (1) is provided with a hook groove (19) matched with the clamping hook (42).

10. A reversible pistol pump according to any one of claims 1 to 9, wherein, The hand gun pump is entirely made of plastic material.

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