Anti-blocking double-cylinder plunger pump

Abstract

The utility model discloses an anti-blocking double-cylinder plunger pump which comprises a plunger pump shell, a large cylinder body is installed on the upper portion of the inner side of the plunger pump shell, a small cylinder body is installed on the lower portion of the inner side of the plunger pump shell, a piston is arranged on the inner side of the plunger pump shell, a valve body is arranged on the top of the large cylinder body, and a piston rod is arranged on the valve body. The large cylinder body and the valve body are integrally formed, a one-way valve ejector rod is installed on the inner side of the valve body in a buckled mode, the one-way valve ejector rod is provided with an open groove communicated with the liquid inlet nozzle and the large cylinder body, and a glass ball valve element is arranged on the inner side of the liquid inlet nozzle. The top of the one-way valve ejector rod is provided with a first valve element spring abutting against the glass ball valve element, the bottom of the piston is provided with a one-way silica gel valve element, and the bottom of the piston is provided with a second valve element spring abutting against the bottom of the one-way silica gel valve element. The check valve is good in sealing performance, capable of saving assembly cost, capable of avoiding blockage caused by sticking of the one-way silica gel valve element, smooth in liquid inlet and outlet and good in using effect.

Description

Technical Field

[0001] This utility model relates to the field of plunger pump technology, specifically to an anti-clogging dual-cylinder plunger pump. Background Technology

[0002] The working principle of a plunger pump is that the reciprocating motion of the piston, combined with the opening and closing of the inlet and outlet check valves, achieves a change in volume, thereby generating negative pressure and drawing in liquid. Existing plunger pumps in soap dispensers typically use silicone or other rubber materials for the check valves to achieve a good seal. However, silicone or rubber check valves have the following drawbacks: 1. Due to their soft nature and large contact area with the mating plastic parts, if the pump is not used for a long period after drawing soap, the soap dries upon contact with air, causing the check valve to stick to the plastic parts. In this case, the suction force generated by the piston cannot open the stuck check valve, resulting in the inability to draw in liquid, and even pump failure due to motor overload. 2. Rubber materials have poor compatibility with various soap solutions. Soap causes the rubber check valve to contract or expand, resulting in an ineffective seal. The piston movement cannot achieve a change in volume, leading to pump malfunction. Furthermore, existing plunger pumps require the valve body and cylinder body to be separated into two parts for easy installation of the check valve at the bottom of the cylinder block. After the check valve is installed, the cylinder body and valve body are then connected by riveting. To achieve a seal between the cylinder body and valve body, a sealing ring needs to be added at the connection point. This not only increases assembly costs but also poses a risk of leakage between the cylinder body and valve body. Therefore, to avoid the shortcomings of the existing technology, it is necessary to improve it. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings and deficiencies in the existing technology and provide a clog-resistant double-cylinder plunger pump with good sealing performance and smooth liquid inlet and outlet.

[0004] This utility model is achieved through the following technical solution:

[0005] A clog-resistant dual-cylinder plunger pump includes a plunger pump housing. A large cylinder is mounted on the upper part of the inner side of the plunger pump housing, and a small cylinder is mounted on the lower part of the inner side of the plunger pump housing. A piston is disposed inside the plunger pump housing, with the upper part of the piston fitted inside the large cylinder and the lower part fitted inside the small cylinder. A valve body is disposed on the top of the large cylinder, and the large cylinder and the valve body are integrally formed. A one-way valve rod is snap-fitted onto the inner side of the valve body, and an inlet is disposed on the top of the valve body. The rod has a slot connecting the inlet nozzle and the large cylinder. A glass ball valve core is provided on the inner side of the inlet nozzle. A first valve core spring is installed on the top of the one-way valve rod to abut against the glass ball valve core. An inlet channel is provided on the inner side of the piston. A one-way silicone valve core is installed on the bottom of the piston. A second valve core spring is installed on the bottom of the piston to abut against the bottom of the one-way silicone valve core. An eccentric gear is connected to the outer side of the piston to drive the piston to move up and down. An outlet nozzle communicating with the inlet channel is provided at the bottom of the small cylinder.

[0006] Furthermore, a one-way valve cover is installed at the bottom of the piston for mounting the second valve core spring.

[0007] Furthermore, a conical inlet is provided on the inner side of the inlet nozzle.

[0008] Furthermore, a conical liquid outlet is provided on the inner side of the bottom of the piston.

[0009] Furthermore, a first O-ring is fitted on the outer side of the upper part of the piston.

[0010] Furthermore, a second O-ring is fitted on the outer side of the lower part of the piston.

[0011] Furthermore, the plunger pump housing includes a lower plunger pump housing and a middle plunger pump housing that are interlocked with each other.

[0012] Furthermore, a plunger pump upper casing is provided on the right side of the plunger pump housing.

[0013] Furthermore, the top of the one-way valve push rod is provided with a positioning mounting hole for mounting the first valve core spring.

[0014] Furthermore, a bottle mouth sealing ring is installed on the outside of the liquid inlet.

[0015] Compared to existing technologies, this invention features a valve body integrated into the top of a large cylinder. A one-way valve rod is snap-fitted onto the inner side of the valve body. The one-way valve rod has a slot connecting the inlet nozzle to the large cylinder. A glass ball valve core is located inside the inlet nozzle. A first valve core spring is mounted on the top of the one-way valve rod to press against the glass ball valve core. A one-way silicone valve core is mounted at the bottom of the piston, and a second valve core spring is mounted at the bottom of the piston to press against the bottom of the one-way silicone valve core. By replacing the soft silicone or rubber material of the inlet one-way valve with a glass ball, while the outlet one-way valve uses silicone, this design achieves both a good seal for the outlet one-way valve and prevents the inlet one-way valve from becoming stuck due to soap residue. To address the issues of plunger pumps failing to dispense liquid or motor overload damage, the large cylinder and valve body are designed as a single integrated unit, preventing potential liquid leakage. The glass ball valve core and the first valve core spring are assembled inside the large cylinder. The one-way valve push rod is connected to the large cylinder via a full-circle snap-fit ​​connection. This design not only compresses the glass ball valve core but also, when the piston moves towards the bottom dead center, pushes open the one-way silicone valve core mounted at the bottom of the piston. The reciprocating motion of the piston simultaneously draws in liquid and opens the one-way silicone valve core, which might be stuck due to soap residue. This prevents blockages caused by the stuck silicone valve core, saves assembly costs, provides excellent sealing, and ensures smooth liquid inflow and outflow. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the anti-clogging dual-cylinder plunger pump of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the anti-clogging dual-cylinder plunger pump of this utility model when the piston moves downward;

[0019] Figure 3 This is a schematic diagram of the internal structure of the anti-clogging dual-cylinder plunger pump of this utility model when the piston moves upward;

[0020] Figure 4 This is a schematic diagram of the one-way valve push rod of this utility model.

[0021] In the diagram: 1-Large cylinder; 2-Small cylinder; 3-Piston; 4-Valve body; 5-One-way valve rod; 6-Inlet nozzle; 7-Groove; 8-Glass ball valve core; 9-First valve core spring; 10-Inlet channel; 11-One-way silicone valve core; 12-Second valve core spring; 13-Eccentric gear; 14-Outlet nozzle; 15-One-way valve cap; 16-Conical inlet; 17-Conical outlet; 18-First O-ring; 19-Second O-ring; 20-Lower housing of plunger pump; 21-Middle housing of plunger pump; 22-Upper housing of plunger pump; 23-Positioning mounting hole; 24-Bottle mouth sealing ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1 to 4The present invention discloses an anti-clogging dual-cylinder plunger pump, comprising a plunger pump housing, a large cylinder 1 mounted on the upper part of the inner side of the plunger pump housing, a small cylinder 2 mounted on the lower part of the inner side of the plunger pump housing, a piston 3 disposed on the inner side of the plunger pump housing, the upper part of the piston 3 fitting inside the large cylinder 1, and the lower part of the piston 3 fitting inside the small cylinder 2, a valve body 4 disposed on the top of the large cylinder 1, the large cylinder 1 and the valve body 4 being integrally formed, a one-way valve rod 5 being snapped onto the inner side of the valve body 4, and an inlet 6 disposed on the top of the valve body 4. There is a slot 7 connecting the inlet nozzle 6 and the large cylinder 1. A glass ball valve core 8 is provided on the inner side of the inlet nozzle 6. A first valve core spring 9 is installed on the top of the one-way valve rod 5 to abut against the glass ball valve core 8. An inlet channel 10 is provided on the inner side of the piston 3. A one-way silicone valve core 11 is installed on the bottom of the piston 3. A second valve core spring 12 is installed on the bottom of the piston 3 to abut against the bottom of the one-way silicone valve core 11. An eccentric gear 13 is connected to the outer side of the piston 3 to drive the piston 3 to move up and down. An outlet nozzle 14 communicating with the inlet channel 10 is provided at the bottom of the small cylinder 2. A valve body 4 is integrally formed with the large cylinder 1 and the valve body 4, with a one-way valve rod 5 snapped onto the inner side of the valve body 4. The one-way valve rod 5 has a slot 7 connecting the inlet nozzle 6 and the large cylinder 1. A glass ball valve core 8 is installed inside the inlet nozzle 6. A first valve core spring 9 is installed on the top of the one-way valve rod 5 to abut against the glass ball valve core 8. A one-way silicone valve core 11 is installed at the bottom of the piston 3, and a second valve core spring 12 is installed at the bottom of the piston 3 to abut against the bottom of the one-way silicone valve core 11. The inlet one-way valve is changed from soft silicone or rubber material to glass ball, while the outlet one-way valve is made of silicone material. This can ensure the sealing of the outlet one-way valve and prevent the inlet one-way valve from being stuck by soap solution, thus preventing the plunger from being blocked. To address issues such as pump failure or motor overload damage, the large cylinder 1 and valve body 4 are designed as a single integrated unit, preventing potential liquid leakage. The glass ball valve core 8 and the first valve core spring 9 are assembled inside the large cylinder 1. The one-way valve push rod 5 is connected to the large cylinder 1 via a full-circle snap-fit ​​connection. This design not only compresses the glass ball valve core 8 but also allows the one-way valve push rod 5 to open the one-way silicone valve core 5 installed at the bottom of the piston 3 when the piston 3 moves towards the bottom of the cylinder. By utilizing the reciprocating motion of the piston 3 to draw in liquid while simultaneously opening the one-way silicone valve core 5, which may be stuck by soap solution, the pump body is prevented from becoming clogged due to the one-way silicone valve core 5 sticking to it. This saves assembly costs, provides good sealing, and ensures smooth liquid inflow and outflow.

[0024] A one-way valve cover 15 is installed at the bottom of the piston 3 for mounting the second valve core spring 12, which facilitates the positioning and installation of the second valve core spring 12 and makes the reset of the second valve core spring 12 and the one-way silicone valve core 11 more stable.

[0025] The inner side of the inlet nozzle 6 is provided with a conical inlet port 16, which is more conducive to achieving unidirectional liquid inlet sealing and stability.

[0026] A conical liquid outlet 17 is provided on the inner side of the bottom of piston 3, which is more conducive to achieving unidirectional liquid discharge sealing and stability.

[0027] The upper outer side of the piston 3 is fitted with a first O-ring 18 to improve the sealing of the sliding connection between the piston 3 and the large cylinder 1.

[0028] A second O-ring 19 is fitted on the outer side of the lower part of the piston 3 to improve the sealing of the sliding connection between the piston 3 and the small cylinder 2.

[0029] The plunger pump housing includes a lower plunger pump housing 20 and a middle plunger pump housing 21 that are interlocked, facilitating the installation of internal components of the plunger pump.

[0030] A plunger pump upper housing 22 is provided on the right side of the plunger pump housing to facilitate the installation and protection of the motor and gears.

[0031] The top of the one-way valve rod 5 is provided with a positioning mounting hole 23 for the installation of the first valve core spring 9, which facilitates the positioning and installation of the first valve core spring 9 and makes the reset of the first valve core spring 9 and the glass ball valve core 8 more stable.

[0032] A bottle mouth sealing ring 24 is installed on the outside of the liquid inlet 6 to facilitate the sealing connection between the plunger pump and the soap bottle.

[0033] When piston 3 moves downward, the air pressure pushes open the glass ball valve core 8 to allow liquid to enter, and at the same time pushes open the one-way silicone valve core 11 to allow liquid to exit. When piston 3 moves upward, the glass ball valve core 8 stops the liquid entering under the action of the first valve core spring 9. At the same time, the liquid in the large cylinder 1 is pushed open by the pressure of piston 3 to allow the one-way silicone valve core 11 to exit. The liquid exit is smooth and continuous, and the effect is good.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A clog-resistant dual-cylinder plunger pump, characterized in that: The system includes a plunger pump housing. A large cylinder is mounted on the upper part of the inner side of the plunger pump housing, and a small cylinder is mounted on the lower part of the inner side of the plunger pump housing. A piston is located inside the plunger pump housing, with its upper part fitted inside the large cylinder and its lower part fitted inside the small cylinder. A valve body is integrally formed with the large cylinder and the valve body. A one-way valve rod is snap-fitted onto the inner side of the valve body. An inlet nozzle is located on the top of the valve body, and the one-way valve rod has a connecting... The inlet nozzle is slotted into the large cylinder. A glass ball valve core is provided on the inner side of the inlet nozzle. A first valve core spring is installed on the top of the one-way valve rod to abut against the glass ball valve core. An inlet channel is provided on the inner side of the piston. A one-way silicone valve core is installed on the bottom of the piston. A second valve core spring is installed on the bottom of the piston to abut against the bottom of the one-way silicone valve core. An eccentric gear is connected to the outer side of the piston to drive the piston to move up and down. An outlet nozzle communicating with the inlet channel is provided at the bottom of the small cylinder.

2. The anti-clogging dual-cylinder plunger pump according to claim 1, characterized in that: A one-way valve cover is installed at the bottom of the piston for mounting the second valve core spring.

3. The anti-clogging dual-cylinder plunger pump according to claim 1, characterized in that: The inner side of the inlet nozzle is provided with a conical inlet.

4. The anti-clogging dual-cylinder plunger pump according to claim 1, characterized in that: A conical liquid outlet is provided on the inner side of the bottom of the piston.

5. The anti-clogging dual-cylinder plunger pump according to claim 1, characterized in that: The piston is fitted with a first O-ring on the outer side of its upper part.

6. The anti-clogging dual-cylinder plunger pump according to claim 1, characterized in that: A second O-ring is fitted on the outer side of the lower part of the piston.

7. The anti-clogging dual-cylinder plunger pump according to claim 1, characterized in that: The plunger pump housing includes a lower plunger pump housing and a middle plunger pump housing that are interlocked with each other.

8. The anti-clogging dual-cylinder plunger pump according to claim 1, characterized in that: The upper casing of the plunger pump is provided on the right side of the plunger pump housing.

9. The anti-clogging dual-cylinder plunger pump according to claim 1, characterized in that: The top of the one-way valve push rod is provided with a positioning mounting hole for mounting the first valve core spring.

10. The anti-clogging dual-cylinder plunger pump according to claim 1, characterized in that: A bottle mouth sealing ring is installed on the outside of the liquid inlet.

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