CN211082231U

CN211082231U - PTFE check valve for metering pump

Info

Publication number: CN211082231U
Application number: CN201921392051.8U
Authority: CN
Inventors: 黄世强; 常驰; 于洪伟; 郑伟; 杨威; 赵明鑫
Original assignee: Prominent Fluid Control Dalian Co ltd
Current assignee: Prominent Fluid Control Dalian Co ltd
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-07-24
Anticipated expiration: 2029-08-26

Abstract

The utility model discloses a PTFE check valve for metering pump, concretely relates to measuring pump field, including the PTFE pump head, the top and the bottom of PTFE pump head all are equipped with check valve mechanism, check valve mechanism includes the PTFE check valve body, the inside cover of PTFE check valve body is equipped with PTFE check valve outer lane layer, the inner chamber of PTFE check valve body is from last to being equipped with outlet groove, first movable groove and second movable groove down in proper order, the bottom in second movable groove is equipped with the entrance groove, the entrance groove sets up the inner chamber bottom at the PTFE check valve body. The utility model discloses a set up check valve mechanism, when liquid reflux problem appears, borosilicate glass valve ball moves to the direction of dog, because the diameter ratio borosilicate glass valve ball of entrance chamber is little, so can reach the effect that prevents the backward flow, solved the one-way accurate problem of carrying the fluid of being not convenient for of check valve mechanism.

Description

PTFE check valve for metering pump

Technical Field

The utility model relates to a measuring pump technical field, more specifically say, the utility model relates to a PTFE check valve for measuring pump.

Background

The check valve is commonly called as a check valve, is also called as a check valve or a check valve and is used for preventing reverse flow of oil flow in a hydraulic system or preventing reverse flow of compressed air in a pneumatic system, and has a straight-through type and a right-angle type, wherein the straight-through type check valve is installed on a pipeline by threaded connection, and the right-angle type check valve has three forms of threaded connection, plate type connection and flange connection.

One-way valves are often used in engineering and domestic water, but the one-way valve mechanism is not convenient for one-way precision fluid delivery.

Disclosure of Invention

In order to overcome the above-mentioned defect of prior art, the embodiment of the utility model provides a PTFE check valve for metering pump, through having set up check valve mechanism, when the backward flow problem appears in liquid, borosilicate glass valve ball is to the direction motion of dog, because the diameter ratio borosilicate glass valve ball of entrance chamber is little, so can reach the effect that prevents the backward flow to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a PTFE one-way valve for a metering pump comprises a PTFE pump head, wherein the top and the bottom of the PTFE pump head are respectively provided with a one-way valve mechanism;

Check valve mechanism includes the one-way valve body of PTFE, the inside cover of the one-way valve body of PTFE is equipped with the outer circle layer of PTFE one-way valve, the inner chamber of the one-way valve body of PTFE is from last to being equipped with export groove, first movable groove and second movable groove down in proper order, the bottom in second movable groove is equipped with the entrance groove, the entrance groove sets up the inner chamber bottom at the one-way valve body of PTFE, the export chamber has been run through to the inside in export groove, first movable groove and second movable groove and has been seted up, the entrance chamber has been seted up to the inner chamber in entrance groove, the export chamber is linked together with the inner chamber in entrance chamber, the inside in entrance groove is equipped with the dog, the dog sets up.

In a preferred embodiment, the number of the outer ring layers of the PTFE check valve is two, and the two outer ring layers of the PTFE check valve are arranged in mirror symmetry with respect to a horizontal center line of the PTFE check valve body.

In a preferred embodiment, the outer wall of the PTFE pump head is provided with a glass cover.

In a preferred embodiment, the top and the bottom of the PTFE pump head are threaded.

In a preferred embodiment, a borosilicate glass valve ball, a PTFE one-way valve outer ball seat and a PTFE sealing gasket are arranged between the top of the PTFE pump head and a one-way valve mechanism arranged on the top of the PTFE pump head from top to bottom in sequence.

In a preferred embodiment, each of the one-way valve mechanism, borosilicate glass valve ball and PTFE seal gasket are provided in one set, and in total in two sets.

In a preferred embodiment, the two PTFE seal gaskets are arranged in mirror symmetry about a horizontal centerline of the PTFE pump head.

In a preferred embodiment, the PTFE seal gasket has a PTFE one-way valve internal ball seat mounted therein.

The utility model discloses a technological effect and advantage:

1. The utility model is provided with the one-way valve mechanism, the borosilicate glass valve ball is driven by the water pressure to move towards the top of the PTFE one-way valve body, because the outlet of the outlet groove is arranged in a quadrangular plum blossom shape, therefore, the borosilicate glass valve ball can not completely block the outlet cavity, when the liquid has the backflow problem, the borosilicate glass valve ball moves towards the direction of the stop block, because the diameter of the inlet cavity is smaller than that of the borosilicate glass valve ball, therefore, the borosilicate glass valve ball can be clamped in the inner cavity of the inlet cavity to prevent liquid from moving from the inner cavity of the outlet cavity to the inner cavity of the inlet cavity, the inner cavity liquid flow channel of the one-way valve mechanism is more reasonable in design, the guide effect of the borosilicate glass valve ball is obvious, the spherical design of the inner ball seat of the PTFE one-way valve and the sealing effect of the borosilicate glass valve ball are better, thereby achieving the function of one-way precise fluid conveying, and greatly improving the practicability of the utility model in practical use compared with the prior art;

2. The utility model discloses a thread groove has been set up, install borosilicate glass valve ball in the inner chamber of check valve mechanism, so that one-way accurate fluid delivery, the borosilicate glass valve ball that the inside PTFE check valve inner ball seat that sets up of outer ball seat of rethread PTFE check valve carries on spacingly to the setting of check valve mechanism inner chamber, prevent that borosilicate glass valve ball from appearing the problem that drops at the motion process, at last with the laminating of PTFE sealing gasket in the thread groove that PTFE pump head top was seted up, install, compare with prior art, there is the effect of the dismouting maintenance PTFE pump head of being convenient for, promoted greatly the utility model discloses convenience during the in-service use.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the check valve mechanism of the present invention.

Fig. 3 is a schematic structural view of the outer ball seat of the check valve of the present invention.

Fig. 4 is a front sectional view of the check valve mechanism of the present invention.

Fig. 5 is a cross sectional view of the check valve mechanism of the present invention.

The reference signs are: 1 PTFE pump head, 2 check valve mechanisms, 21 PTFE check valve body, 22 PTFE check valve outer ring layer, 23 outlet groove, 24 first movable groove, 25 second movable groove, 26 inlet groove, 27 outlet cavity, 28 inlet cavity, 29 check block, 3 glass outer cover, 4 thread groove, 5 borosilicate glass valve ball, 6 PTFE check valve outer ball seat, 7 PTFE sealing gasket, 8 PTFE check valve inner ball seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model discloses a PTFE check valve for metering pump of embodiment can include PTFE pump head 1, the top and the bottom of PTFE pump head 1 all are equipped with check valve mechanism 2.

Referring to the attached drawings 1-5 in the specification, the check valve mechanism 2 of the PTFE check valve for the metering pump of the embodiment includes a PTFE check valve body 21, the PTFE check valve body 21 is internally sleeved with a PTFE check valve outer ring layer 22, an inner cavity of the PTFE check valve body 21 is sequentially provided with an outlet groove 23, a first movable groove 24 and a second movable groove 25 from top to bottom, the bottom of the second movable groove 25 is provided with an inlet groove 26, the inlet groove 26 is arranged at the bottom of the inner cavity of the PTFE check valve body 21, the outlet groove 23, the first movable groove 24 and the second movable groove 25 are internally penetrated to form an outlet cavity 27, the inner cavity of the inlet groove 26 is provided with an inlet cavity 28, the outlet cavity 27 is communicated with the inner cavity of the inlet cavity 28, the inner part of the inlet groove 26 is provided with a stopper 29, and the stopper 29 is arranged in the inner cavity of the inlet cavity 28.

Further, the number of the outer circle layers 22 of the PTFE check valve is two, and the two outer circle layers 22 of the PTFE check valve are arranged in mirror symmetry relative to the horizontal center line of the PTFE check valve body 21.

The implementation scenario is specifically as follows: in actual use, firstly, the PTFE check valve outer ring layer 22 is installed on the outer wall of the corresponding PTFE check valve body 21 so as to connect other components, in the process of installing the PTFE check valve outer ring layer 22 and the PTFE check valve body 21, the borosilicate glass valve ball 5 is taken out, the borosilicate glass valve ball 5 is placed in an inlet cavity 28 formed in the PTFE check valve body 21, because the outlet cavity 27 is communicated with the inlet cavity 28, the borosilicate glass valve ball 5 can move in the inner cavities of the outlet cavity 27 and the inlet cavity 28, when water enters from the inlet of the inlet cavity 28, the borosilicate glass valve ball 5 is driven by water pressure to move towards the top of the PTFE check valve body 21, because the outlet of the outlet groove 23 is set in a quadrangular plum blossom shape, the borosilicate glass valve ball 5 cannot completely block the outlet cavity 27, so that water can normally circulate, when liquid has a backflow problem, the borosilicate glass valve ball 5 moves towards the direction of the stopper 29, since the diameter of the inlet cavity 28 is smaller than that of the borosilicate glass valve ball 5, the borosilicate glass valve ball 5 can block the inner cavity of the inlet cavity 28, and liquid is prevented from moving from the inner cavity of the outlet cavity 27 to the inner cavity of the inlet cavity 28, and the embodiment specifically solves the problem that the unidirectional precise fluid conveying cannot be realized in the prior art.

Referring to the attached figures 1-5 of the specification, the outer wall of the PTFE pump head 1 of the PTFE check valve for the metering pump of this embodiment is provided with a glass housing 3.

Further, thread grooves 4 are formed in the top and the bottom of the PTFE pump head 1 in a penetrating manner.

Further, a borosilicate glass valve ball 5, a PTFE one-way valve outer ball seat 6 and a PTFE sealing gasket 7 are sequentially arranged between the top of the PTFE pump head 1 and the one-way valve mechanism 2 arranged on the top of the PTFE pump head 1 from top to bottom.

Further, each of the check valve mechanism 2, the borosilicate glass valve ball 5, and the PTFE seal packing 7 is provided in one set, and two sets are provided.

Further, two PTFE seal gaskets 7 are arranged in mirror symmetry about the horizontal center line of the PTFE pump head 1.

Further, a PTFE one-way valve inner ball seat 8 is arranged inside the PTFE sealing gasket 7.

The implementation scenario is specifically as follows: in practical use, all components of the utility model are taken out firstly, the borosilicate glass valve ball 5 is arranged in the inner cavity of the one-way valve mechanism 2 to facilitate one-way precise fluid conveying, then the borosilicate glass valve ball 5 arranged in the inner cavity of the one-way valve mechanism 2 is limited by the PTFE one-way valve inner ball seat 8 arranged in the PTFE one-way valve outer ball seat 6 to prevent the borosilicate glass valve ball 5 from falling off in the movement process, finally the PTFE sealing gasket 7 is attached in the thread groove 4 arranged at the top of the PTFE pump head 1, the PTFE one-way valve outer ball seat 6 is in threaded connection with the thread groove 4 by threads, the PTFE sealing gasket 7 is arranged to prevent the leakage problem in the liquid conveying process, the PTFE sealing gasket 7 is attached on the other thread groove 4 arranged at the bottom of the PTFE pump head 1 to facilitate installation with the other one-way valve mechanism 2, this embodiment specifically solves the problem that the check valve mechanism 2 is not convenient to disassemble, assemble and maintain in the prior art.

In summary, the following steps: the utility model discloses a having set up check valve mechanism 2, when liquid reflux problem appears, borosilicate glass valve ball 5 is little to dog 29's direction motion because the diameter ratio borosilicate glass valve ball 5 of entrance chamber 28's diameter, so can reach the effect that prevents the backward flow, solved the one-way accurate problem of carrying the fluid of being not convenient for of check valve mechanism 2.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

Secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

And finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a PTFE check valve for metering pump, includes PTFE pump head (1), its characterized in that: the top and the bottom of the PTFE pump head (1) are both provided with a one-way valve mechanism (2);

The one-way valve mechanism (2) comprises a PTFE one-way valve body (21), a PTFE one-way valve outer ring layer (22) is sleeved in the PTFE one-way valve body (21), an outlet groove (23), a first movable groove (24) and a second movable groove (25) are sequentially arranged in the inner cavity of the PTFE one-way valve body (21) from top to bottom, an inlet groove (26) is formed in the bottom of the second movable groove (25), the inlet groove (26) is formed in the bottom of an inner cavity of the PTFE one-way valve body (21), an outlet cavity (27) is arranged in the outlet groove (23), the first movable groove (24) and the second movable groove (25) in a penetrating way, an inlet cavity (28) is arranged in the inner cavity of the inlet groove (26), the outlet cavity (27) is communicated with the inner cavity of the inlet cavity (28), a stop block (29) is arranged inside the inlet groove (26), and the stop block (29) is arranged in the inner cavity of the inlet cavity (28).

2. The PTFE check valve for a metering pump of claim 1, wherein: the PTFE check valve outer ring layer (22) is two in number, and the PTFE check valve outer ring layer (22) is arranged in mirror symmetry with respect to the horizontal center line of the PTFE check valve body (21).

3. The PTFE check valve for a metering pump of claim 1, wherein: the outer wall of the PTFE pump head (1) is provided with a glass outer cover (3).

4. The PTFE check valve for a metering pump of claim 1, wherein: threaded grooves (4) are formed in the top and the bottom of the PTFE pump head (1) in a penetrating mode.

5. The PTFE check valve for a metering pump of claim 1, wherein: and a borosilicate glass valve ball (5), a PTFE one-way valve outer ball seat (6) and a PTFE sealing gasket (7) are sequentially arranged between the top of the PTFE pump head (1) and the one-way valve mechanism (2) arranged at the top of the PTFE pump head (1) from top to bottom.

6. The PTFE check valve for a metering pump of claim 5, wherein: each one-way valve mechanism (2), the borosilicate glass valve ball (5) and the PTFE sealing gasket (7) are arranged into one group, and two groups are arranged.

7. The PTFE check valve for a metering pump of claim 5, wherein: the two PTFE sealing gaskets (7) are arranged in mirror symmetry about the horizontal center line of the PTFE pump head (1).

8. The PTFE check valve for a metering pump of claim 5, wherein: and an inner ball seat (8) of the PTFE one-way valve is arranged in the PTFE sealing gasket (7).