Peristaltic pump with adjustable one-way valve

Abstract

The utility model discloses a peristaltic pump with an adjustable one-way valve. The peristaltic pump comprises a motor, a pump head shell and a blocking piece which are fixedly connected. According to the valve, the valve seat is in threaded connection with the liquid outlet pipe through the pipe threads in the liquid outlet pipe, the valve seat is used for fixing one end of the spring of the valve body, the valve element is fixed to the other end of the spring, the valve element is made of the elastic material, and the elastic material has good sealing performance and elasticity; one-way flowing of liquid can be effectively controlled under the action of the spring, the valve seat can be manually rotated subsequently through a straight screwdriver or tweezers or other tools, the relative position between the valve seat and the liquid outlet pipe is changed, and therefore the compression degree of the spring is changed, namely the pre-tightening force of the spring is adjusted. A user can easily adjust the opening pressure of the one-way valve according to actual requirements, the valve seat is integrally screwed away from the liquid outlet pipe, and then the one-way valve can be taken out.

Description

TECHNICAL FIELD

[0001] The utility model relates to peristaltic pump technical field especially, it relates to a peristaltic pump with adjustable check valve. BACKGROUND

[0002] Peristaltic pump is the pump based on peristalsis principle work, through the alternate compression and release flexible medium to realize the transmission of liquid, the design inspiration of this pump comes from the peristalsis movement of human digestive tract, that is, through the wave -like contraction of muscle to push the contents forward.

[0003] Chinese patent publication number CN203476665U, disclosure time is March 12, 2014, discloses a peristaltic pump head, it includes motor, base, shell, the fixed mechanism of elastic hose, two check valves, eccentric wheel disc and one, two or multiple eccentric wheels;Shell is fixed on the base, motor is fixed on the shell, motor shaft extends to the front end of shell, the center shaft sleeve of eccentric wheel disc rear end is fixed on the motor shaft, eccentric wheel disc front end eccentricity has one, two or multiple eccentric wheel shaft, one, two or multiple eccentric wheels are rotatably installed on the eccentric wheel shaft respectively;The front end of base is fixed with the clamping fixed mechanism of elastic hose, two opening direction consistent check valves are installed on the elastic hose with interval distance.

[0004] Such as the existing liquid outlet pipe inside often integrates check valve, the opening pressure of the existing check valve is mostly fixed, cannot be adjusted according to the nature of actual delivery fluid and the demand of working scene, so there is an urgent need to propose the corresponding peristaltic pump with adjustable check valve to solve the above problems. SUMMARY

[0005] The utility model aims at: in order to solve above -mentioned problem, and propose a kind of peristaltic pump with adjustable check valve.

[0006] To achieve the above object, the utility model has the following technical scheme:

[0007] A kind of peristaltic pump with adjustable check valve, including fixed connection motor, pump head shell and baffle, the pump head shell outer surface wall is fixedly connected with liquid outlet pipe and liquid inlet pipe, the pump head shell inside is integrated with skin bowl, skin bowl separates liquid outlet pipe and liquid inlet pipe, and the motor output end and skin bowl are integrated with peristaltic assembly, the liquid outlet pipe inside is integrated with check valve assembly.

[0008] Preferably, the check valve assembly includes the valve seat that is screwed with the inner surface wall of liquid outlet pipe, the valve core is blocked in the input end of the liquid outlet pipe, and the valve core and the valve seat are fixedly connected with spring, the valve seat is internally provided with cross type hollow.

[0009] Preferably, the liquid outlet pipe and the liquid inlet pipe are integrally formed with the pump head shell.

[0010] Preferably, the valve core cross section is T-shaped structure.

[0011] Preferably, the peristaltic assembly comprises an eccentric wheel fixedly connected with the motor output end, a ball bearing is fixedly connected to the outer wall of the eccentric wheel, and the leather cup is sleeved outside the ball bearing.

[0012] Preferably, the baffle is fixedly connected with the pump head shell by a screw.

[0013] As described above, the beneficial effects of the present application are:

[0014] In the present application, the motor serves as a power source to drive the eccentric wheel to make a circular motion, the ball bearing is fixed on the eccentric wheel, the leather cup is directly sleeved on the bearing, forming an eccentric wheel with bearing, when the eccentric wheel rotates, the outer ring of the bearing contacts the middle part of the leather cup, forming a reciprocating eccentric action, the pump head shell is provided with a liquid inlet and a liquid outlet channel, the two channels are separated by the leather cup, thereby realizing the suction and discharge of the liquid, the valve seat is threadedly connected with the liquid outlet pipe to form a threaded connection with sealing function, one end of the spring for fixing the valve body is fixed on the valve seat, and the other end of the spring is fixed on the valve core, the valve core is made of elastic material, which has good sealing performance and elasticity, and can effectively control the one-way flow of the liquid under the action of the spring, the valve seat can be manually rotated by using a screwdriver or tweezers and the like, the relative position between the valve seat and the liquid outlet pipe changes, thereby changing the compression degree of the spring, i.e. adjusting the pre-tightening force of the spring, in this way, the user can easily adjust the opening pressure of the one-way valve according to actual needs, and the one-way valve can be taken out by rotating the valve seat as a whole from the liquid outlet pipe. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 An overall structure schematic diagram is shown according to the embodiment of the present application;

[0016] Figure 2 An eccentric wheel structure schematic diagram is shown according to the embodiment of the present application;

[0017] Figure 3 A one-way valve assembly structure schematic diagram is shown according to the embodiment of the present application;

[0018] Figure 4 A leather cup structure schematic diagram is shown according to the embodiment of the present application.

[0019] LEGEND:

[0020] 1, motor; 2, pump head shell; 3, liquid outlet pipe; 4, liquid inlet pipe; 5, baffle; 6, screw; 7, leather cup; 8, ball bearing; 9, eccentric wheel; 10, valve seat; 11, spring; 12, valve core. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0022] Please refer to Figures 1-4 The utility model provides a technical scheme:

[0023] A peristaltic pump with adjustable check valve, including fixed connection motor 1, pump head shell 2 and baffle 5, pump head shell 2 outer wall fixedly connected with liquid outlet pipe 3 and liquid inlet pipe 4, pump head shell 2 inside integrated with skin bowl 7, skin bowl 7 separates liquid outlet pipe 3 and liquid inlet pipe 4, and motor 1 output end and skin bowl 7 integrated with peristaltic assembly, liquid outlet pipe 3 inside integrated with check valve assembly;

[0024] Valve seat 10 is connected with liquid outlet pipe 3 through the pipe thread in liquid outlet pipe 3 and forms the threaded connection with sealing function, valve seat 10 is used for fixing one end of spring 11 of valve body, and the other end of spring 11 is fixed with valve core 12, valve core 12 is made of elastic material, and this material has good sealing performance and elasticity, can effectively control the one-way flow of liquid under the action of spring 11, and the relative position between valve seat 10 and liquid outlet pipe 3 changes, so that the compression degree of spring 11 is changed, that is, the pre-tightening force of spring 11 is adjusted, in this way, the user can easily adjust the opening pressure of check valve according to actual demand, and the valve seat 10 is rotated off liquid outlet pipe 3, so that the check valve can be taken out.

[0025] Specifically, as shown in Figure 2 And Figure 4 The check valve assembly includes valve seat 10 that is screw-connected with the inner wall of the liquid outlet pipe 3, the input end of the liquid outlet pipe 3 is blocked by the valve core 12, and the spring 11 is fixedly connected between the valve core 12 and the valve seat 10, the valve seat 10 is internally provided with a cross-shaped hollow to ensure the flow of fluid and facilitate subsequent rotation, the liquid outlet pipe 3 and the liquid inlet pipe 4 are integrally formed with the pump head shell 2, this integrated design not only reduces the leakage points and improves the sealing performance of the equipment, but also makes the structure more compact, facilitating installation and maintenance, the valve core 12 has a T-shaped cross section, and the valve core 12 is made of elastic material, preferably rubber, which has good sealing performance and elasticity and can effectively control the one-way flow of liquid under the action of the spring 11.

[0026] Specifically, as shown inFigure 2 With Figure 3 As shown in the figure, the peristaltic assembly comprises an eccentric wheel 9 fixedly connected with the output end of the motor 1, the eccentric wheel 9 is fixedly connected with a ball bearing 8 on the outer wall, and the rubber bowl 7 is sleeved on the outer side of the ball bearing 8. The motor 1 serves as a power source to drive the eccentric wheel 9 to make a circular motion. The eccentric wheel 9 is fixed with the ball bearing 8, forming a bearing eccentric wheel 9. The rubber bowl 7 is directly sleeved on the bearing. When the eccentric wheel 9 rotates, the outer ring of the bearing contacts the middle part of the rubber bowl 7, forming a reciprocating eccentric action. The pump head shell 2 is provided with a liquid inlet and outlet channel. The two channels are separated by the rubber bowl 7, so as to realize the suction and discharge of the liquid. The baffle 5 is fixedly connected with the pump head shell 2 through the screw 6, ensuring the convenience of disassembly and assembly of the baffle 5.

[0027] It should be noted that the peristaltic assembly herein uses the prior art, and the specific structure of each component will not be described in detail.

[0028] Working principle: the motor 1 serves as a power source to drive the eccentric wheel 9 to make a circular motion. The eccentric wheel 9 is fixed with the ball bearing 8, and the rubber bowl 7 is directly sleeved on the bearing, forming a bearing eccentric wheel 9. When the eccentric wheel 9 rotates, the outer ring of the bearing contacts the middle part of the rubber bowl 7, forming a reciprocating eccentric action. The pump head shell 2 is provided with a liquid inlet and outlet channel. The two channels are separated by the rubber bowl 7, so as to realize the suction and discharge of the liquid. The valve seat 10 is threadedly connected with the outlet pipe 3 to form a threaded connection with sealing function. The valve seat 10 is used to fix one end of the spring 11 of the valve body, and the other end of the spring 11 is fixed with the valve core 12. The valve core 12 is made of elastic material, which has good sealing performance and elasticity, and can effectively control the one-way flow of the liquid under the action of the spring 11. Subsequently, the valve seat 10 can be manually rotated by using a screwdriver or tweezers and the like. The relative position between the valve seat 10 and the outlet pipe 3 changes, thereby changing the compression degree of the spring 11, i.e. adjusting the pre-tightening force of the spring 11. In this way, the user can easily adjust the opening pressure of the one-way valve according to the actual demand. When the valve seat 10 is rotated off the outlet pipe 3, the one-way valve can be taken out.

[0029] The above description of the embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A peristaltic pump with an adjustable check valve, comprising a fixedly connected motor (1), a pump head housing (2), and a baffle (5), characterized in that, The outer wall of the pump head housing (2) is fixedly connected to the outlet pipe (3) and the inlet pipe (4). The pump head housing (2) is integrated with a cup (7), which separates the outlet pipe (3) and the inlet pipe (4). The output end of the motor (1) is integrated with the cup (7) and a peristaltic component. The outlet pipe (3) is integrated with a one-way valve component.

2. A peristaltic pump with an adjustable one-way valve according to claim 1, characterized in that, The one-way valve assembly includes a valve seat (10) that is screwed into the inner wall of the outlet pipe (3). The inlet end of the outlet pipe (3) is sealed with a valve core (12), and a spring (11) is fixedly connected between the valve core (12) and the valve seat (10). The valve seat (10) has a cross-shaped hollow inside.

3. A peristaltic pump with an adjustable one-way valve according to claim 2, characterized in that, The outlet pipe (3) and the inlet pipe (4) are both integrally formed with the pump head housing (2).

4. A peristaltic pump with an adjustable one-way valve according to claim 3, characterized in that, The valve core (12) has a T-shaped cross-section.

5. A peristaltic pump with an adjustable check valve according to claim 4, characterized in that, The peristaltic assembly includes an eccentric wheel (9) fixedly connected to the output end of the motor (1), a ball bearing (8) fixedly connected to the outer wall of the eccentric wheel (9), and a cup (7) sleeved on the outside of the ball bearing (8).

6. A peristaltic pump with an adjustable one-way valve according to claim 5, characterized in that, The baffle (5) is fixedly connected to the pump head housing (2) by screws (6).

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