Pneumatic diaphragm pump with filtering structure

Abstract

The utility model provides a pneumatic diaphragm pump with a filtering structure, which comprises a pneumatic diaphragm pump main body, a liquid inlet pipe and an impurity filtering anti-attachment device, the liquid inlet pipe is communicated with the pneumatic diaphragm pump main body, the impurity filtering anti-attachment device is arranged on the liquid inlet pipe and positioned in the liquid inlet pipe, and the liquid inlet pipe is communicated with the liquid inlet pipe. The impurity filtering and adhesion preventing device comprises a supporting ring plate and a plurality of connecting bases, the supporting ring plate is in threaded connection to the inner wall of the liquid inlet pipe, the connecting bases are arranged on the inner wall of the supporting ring plate, the connecting bases are arranged around the axis of the supporting ring plate at equal intervals, and liquid can be filtered before entering the pneumatic diaphragm pump body; impurities in liquid can be prevented from being attached to the interior of the pneumatic diaphragm pump body, so that the situation that the pneumatic diaphragm pump body is blocked can be reduced after long-term use, and the service life of the pneumatic diaphragm pump body can be prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to pneumatic diaphragm pump technical field, specifically related to a pneumatic diaphragm pump with filter structure. BACKGROUND

[0002] Pneumatic diaphragm pump is a new type of conveying machinery, adopts compressed air as power source, for all kinds of liquid, can be pumped to suck.

[0003] The prior art pneumatic diaphragm pump cannot filter liquid before the liquid enters the pneumatic diaphragm pump body, cannot prevent impurities in the liquid from adhering to the inside of the pneumatic diaphragm pump body, thereby cannot reduce the plugging of the pneumatic diaphragm pump body and cannot prolong the service life of the pneumatic diaphragm pump body after long-term use. UTILITY MODEL CONTENTS

[0004] The utility model discloses a pneumatic diaphragm pump with filter structure to solve the technical problem of the prior art.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A pneumatic diaphragm pump with filter structure, comprising a pneumatic diaphragm pump body, a liquid inlet pipe is communicated and arranged on the pneumatic diaphragm pump body, further comprising a filter and anti-adhesion device, which is arranged on the liquid inlet pipe and located inside the liquid inlet pipe, the filter and anti-adhesion device comprises a support ring plate, which is threadedly connected to the inner wall of the liquid inlet pipe, a plurality of connecting seats are arranged on the inner wall of the support ring plate, and the connecting seats are equidistantly arranged around the axis of the support ring plate, a connecting column is threadedly connected between the connecting seats, and the axis of the connecting column is coincidentally arranged with the axis of the support ring plate, a containing groove is formed on the end face of the connecting column away from the pneumatic diaphragm pump body, a compression spring is fixedly arranged on one end of the connecting column, and the compression spring is located inside the containing groove, a slow-down plate is arranged on the other end of the compression spring, the slow-down plate is located inside the support ring plate, and the slow-down plate is slidably connected with the inner wall of the support ring plate, a plurality of flow-through holes are throughly arranged on the slow-down plate, a filter screen is arranged on the end face of the connecting column close to the pneumatic diaphragm pump body, the filter screen is located inside the liquid inlet pipe, and the filter screen is slidably connected with the inner wall of the liquid inlet pipe.

[0007] Further improvement is that the outside of the slow-down plate is provided with a first auxiliary ring plate with wear resistance, corrosion resistance and self-lubrication, and the first auxiliary ring plate is in sliding connection with the support ring plate; the outside of the filter screen is provided with a second auxiliary ring plate with wear resistance, corrosion resistance and self-lubrication, and the second auxiliary ring plate is in sliding connection with the liquid inlet pipe.

[0008] Further improvement is that the first auxiliary ring plate is an ultrahigh molecular weight polyethylene ring plate, and the second auxiliary ring plate is an ultrahigh molecular weight polyethylene ring plate.

[0009] Further improvement is that an extension column is arranged between the filter screen and the connecting column, one end of the extension column is fixedly arranged on the filter screen, and the other end of the extension column is threadedly connected to the connecting column.

[0010] Further improvement is that a folding sleeve with folding function is arranged between the slow-down plate and the connecting column and outside the compression spring.

[0011] Further improvement is that a buffer ring layer is arranged on the end face of the connecting column close to the slow-down plate, the buffer ring layer is located outside the compression spring, and the buffer ring layer is located inside the folding sleeve.

[0012] Further improvement is that the buffer ring layer is a nitrile rubber ring layer.

[0013] After the above technical scheme is adopted, the liquid can be filtered before entering the pneumatic diaphragm pump body, impurities in the liquid can be prevented from adhering to the inside of the pneumatic diaphragm pump body, the pneumatic diaphragm pump body can be prevented from being blocked after long-term use, and the service life of the pneumatic diaphragm pump body can be prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Fig. 1 is a structural schematic view of the present application;

[0016] Fig. 2 is a sectional view of the present application after hiding the pneumatic diaphragm pump body.

[0017] Explanation of reference numerals in the attached drawings: 1. Pneumatic diaphragm pump body; 2. Inlet pipe; 3. Support ring plate; 4. Connecting seat; 5. Connecting column; 6. Receiving groove; 7. Compression spring; 8. Slowing plate; 9. Flow hole; 10. Filter screen; 11. First auxiliary ring plate; 12. Second auxiliary ring plate; 13. Extension column; 14. Folding sleeve; 15. Shock-absorbing ring layer. Detailed Implementation

[0018] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0019] See Figs. 1-2 As shown, the technical solution adopted in this specific embodiment is:

[0020] A pneumatic diaphragm pump with a filtration structure includes a pneumatic diaphragm pump body 1; an inlet pipe 2 connected to the pneumatic diaphragm pump body 1; and a filter and anti-fouling device disposed on and inside the inlet pipe 2. The filter and anti-fouling device is used to filter the liquid before it enters the pneumatic diaphragm pump body 1 to prevent impurities in the liquid from adhering to the inside of the pneumatic diaphragm pump body 1, thereby reducing the likelihood of blockage in the pneumatic diaphragm pump body 1 after long-term use and extending the service life of the pneumatic diaphragm pump body 1.

[0021] The impurity filtering and anti-adhesion device includes a support ring plate 3, which is threaded to the inner wall of the inlet pipe 2; several connecting seats 4, which are fixedly installed on the inner wall of the support ring plate 3 and are equidistantly arranged around the axis of the support ring plate 3; a connecting column 5, which is threaded between the connecting seats 4 and whose axis coincides with the axis of the support ring plate 3; a receiving groove 6, which is formed on the end face of the connecting column 5 away from the pneumatic diaphragm pump body 1; and a compression spring 7, one end of which is fixed... A compression spring 7 is fixedly mounted on the connecting column 5 and located inside the receiving groove 6; a deceleration plate 8 is fixedly mounted on the other end of the compression spring 7 and located inside the support ring plate 3, with the deceleration plate 8 slidably connected to the inner wall of the support ring plate 3; several flow holes 9 are provided through the deceleration plate 8; a filter screen 10 is provided on the end face of the connecting column 5 near the pneumatic diaphragm pump body 1 and located inside the inlet pipe 2, with the filter screen 10 slidably connected to the inner wall of the inlet pipe 2.

[0022] The buffer plate 8 is externally provided with a first auxiliary ring plate 11, which has wear resistance, corrosion resistance and self-lubricating properties, and the first auxiliary ring plate 11 is slidably connected to the support ring plate 3; the filter screen 10 is externally provided with a second auxiliary ring plate 12, which has wear resistance, corrosion resistance and self-lubricating properties, and the second auxiliary ring plate 12 is slidably connected to the liquid inlet pipe 2; the first auxiliary ring plate 11 is an ultra-high molecular weight polyethylene ring plate; the second auxiliary ring plate 12 is an ultra-high molecular weight polyethylene ring plate.

[0023] An extension post 13 is provided between the filter screen 10 and the connecting post 5. One end of the extension post 13 is fixedly mounted on the filter screen 10, and the other end of the extension post 13 is threadedly connected to the connecting post 5. The filter screen 10 can be removed from the connecting post 5 separately for cleaning to ensure the filtration effect of the filter screen 10.

[0024] A folding sleeve 14 with a folding function is provided between the deceleration plate 8 and the connecting column 5 and outside the compression spring 7. The folding sleeve 14 is used to prevent impurities in the liquid from adhering to the compression spring 7, so as to prevent the compression spring 7 from being unable to deform, thereby preventing the compression spring 7 from being unable to cooperate with the deceleration plate 8 to slow down the flow rate of the liquid.

[0025] A shock-absorbing ring layer 15 is provided on the end face of the connecting post 5 near the deceleration plate 8. The shock-absorbing ring layer 15 is located outside the compression spring 7 and inside the folding sleeve 14. The shock-absorbing ring layer 15 is used to buffer the impact of the deceleration plate 8 on the connecting post 5 to prevent damage to the deceleration plate 8 and / or the connecting post 5. The shock-absorbing ring layer 15 is a nitrile rubber ring layer.

[0026] The working principle of this utility model is as follows: the deceleration plate 8 is used to reduce the flow rate of the liquid entering the inlet pipe 2; the compression spring 7 is used to cooperate with the deceleration plate 8 to reduce the flow rate of the liquid entering the inlet pipe 2; several flow holes 9 are used for the liquid whose flow rate has been reduced by the deceleration plate 8 to pass through; the filter screen 10 is used to filter the liquid whose flow rate has been reduced by the deceleration plate 8 and has passed through several flow holes 9.

[0027] The support ring plate 3 is threaded to the inner wall of the inlet pipe 2, the connecting column 5 is threaded to several connecting seats 4, the damping plate 8 is slidably connected to the inner wall of the support ring plate 3, and the filter screen 10 is slidably connected to the inner wall of the inlet pipe 2. With the above settings, the filter impurity anti-adhesion device can be removed from the inlet pipe 2 after regular use, and the damping plate 8 and the filter screen 10 can be cleaned, thereby extending the service life and performance of the filter impurity anti-adhesion device.

[0028] All content not described in detail in this utility model specification belongs to the prior art known to those skilled in the art. This utility model aims to protect the structure of the product; the model numbers of the components are not the subject of this utility model's protection and are also prior art known to those skilled in the art. Any component on the market that can achieve the above-mentioned functions of this utility model can be selected and used.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions above are only illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A pneumatic diaphragm pump with filter structure, comprising a pneumatic diaphragm pump body; a liquid inlet pipe, which is communicated and arranged on the pneumatic diaphragm pump body; characterized in that: It also includes a filter and anti-fouling device, which is disposed on the inlet pipe and located inside the inlet pipe; the filter and anti-fouling device includes a support ring plate, which is threaded to the inner wall of the inlet pipe; several connecting seats, which are disposed on the inner wall of the support ring plate and are equidistantly arranged around the axis of the support ring plate; a connecting column, which is threaded between the several connecting seats and whose axis coincides with the axis of the support ring plate; and a receiving groove, which is formed on the connecting column away from the main body of the pneumatic diaphragm pump. The pump body has the following components: a compression spring, one end of which is fixedly mounted on the connecting post and located inside the receiving groove; a deceleration plate, located at the other end of the compression spring and inside the support ring plate, which is slidably connected to the inner wall of the support ring plate; several flow holes, which are disposed through the deceleration plate; and a filter screen, located on the end face of the connecting post near the main body of the pneumatic diaphragm pump and inside the inlet pipe, which is slidably connected to the inner wall of the inlet pipe.

2. A pneumatic diaphragm pump with filter structure according to claim 1, characterized in that: The buffer plate is provided with a first auxiliary ring plate with wear resistance, corrosion resistance and self-lubrication properties on its exterior, and the first auxiliary ring plate is slidably connected to the support ring plate; the filter screen is provided with a second auxiliary ring plate with wear resistance, corrosion resistance and self-lubrication properties on its exterior, and the second auxiliary ring plate is slidably connected to the liquid inlet pipe.

3. A pneumatic diaphragm pump with filter structure according to claim 2, characterized in that: The first auxiliary ring plate is an ultra-high molecular weight polyethylene ring plate; the second auxiliary ring plate is an ultra-high molecular weight polyethylene ring plate.

4. A pneumatic diaphragm pump with filter structure according to claim 1, characterized in that: An extension post is provided between the filter screen and the connecting post. One end of the extension post is fixedly disposed on the filter screen, and the other end of the extension post is threadedly connected to the connecting post.

5. A pneumatic diaphragm pump with filter structure according to claim 1, characterized in that: A folding sleeve with a folding function is provided between the deceleration plate and the connecting column and outside the compression spring.

6. A pneumatic diaphragm pump with filter structure according to claim 5, characterized in that: The connecting post has a shock-absorbing ring layer on the end face near the deceleration plate. The shock-absorbing ring layer is located outside the compression spring and inside the folding sleeve.

7. A pneumatic diaphragm pump with filter structure according to claim 6, characterized in that: The impact-absorbing ring layer is a nitrile rubber ring layer.

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