Foam pump

Abstract

The utility model discloses a foam pump which comprises a pump body, the pump body is provided with a cylinder body, a valve plate and a base plate, the cylinder body and the valve plate are pulled and abut against each other through a connecting assembly, the connecting assembly comprises a plurality of bottom holes formed in the valve plate, a plurality of top holes formed in the cylinder body and an embedding groove formed in the valve plate, and the embedding groove is connected with an elastic belt in an embedded mode. The bottom holes are located in the outer side of the caulking groove, correspond to the top holes one by one and are connected through traction pieces, the base plate is fixedly connected to a shell of the pump body, the base plate transversely extends, and at least one positioning hole is formed in the base plate and used for allowing a connecting piece to penetrate through; the pump main body is arranged in a matched range hood, the pump main body and the range hood are installed by penetrating a connecting piece into a positioning hole in a base plate, the corresponding top hole and the positioning hole drive a cylinder body and a valve plate to achieve stable connection through a traction piece, the fragility condition is not prone to occurring, the cylinder body is connected with an elastic belt in a pressing mode when abutting against the valve plate, and the sealing performance is effectively improved; and oil fume is prevented from entering the pump main body.

Description

Technical Field

[0001] The utility model relates to the technical field of foam pumps, in particular to a foam pump. Background Art

[0002] A foam pump is a pump body that can produce foam. It is widely used in products such as hand washing, bathing and some beauty equipment. The principle of a foam pump is to mix working liquids such as hand soap, bath soap or face cleanser with gas to generate foam and then pump it out.

[0003] The foam pumps currently used are in a relatively good environment. When used in conjunction with a range hood, they need to face a high temperature, high humidity, and oil fume environment. Not only is it inconvenient to install, but the sealing effect is poor and it is easy for oil fume to enter and damage it. At the same time, ultrasonic welding is used between the cylinder body and the valve plate of the existing foam pump. After a long time, the plastic parts will age, and there is a chance of brittle cracks at the welding position, causing water leakage. Therefore, the utility model proposes a foam pump that can solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a foam pump to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a foam pump, comprising a pump body, the pump body having a cylinder, a valve plate and a pad, the cylinder and the valve plate being pulled against each other by a connecting assembly;

[0006] The connecting assembly includes a plurality of bottom holes arranged on the valve plate, a plurality of top holes arranged on the cylinder body, and an embedding groove arranged on the valve plate, wherein the embedding groove is embedded with an elastic band, and the plurality of bottom holes are located outside the embedding groove, and the bottom holes correspond to the top holes one by one and are connected by a pulling member;

[0007] The backing plate is fixedly connected to the outer shell of the pump body, the backing plate extends transversely, and at least one positioning hole is arranged on the backing plate, and the positioning hole is used for inserting the connecting piece.

[0008] As a preferred technical solution, the pad is provided with a side hole on one side of each positioning hole, and the side hole is open.

[0009] As a preferred technical solution, the elastic band is connected end to end, and the elastic band protrudes from the embedding groove and can contact the bottom wall of the cylinder body.

[0010] As a preferred technical solution, the embedding groove has a plurality of concave circles recessed toward the center of the valve plate, and each bottom hole is distributed outside a concave circle and is arranged concentrically with the concave circle.

[0011] As a preferred technical solution, a plurality of reinforcing ribs are arranged on the rear side of the pad.

[0012] As a preferred technical solution, each of the bottom holes is provided with a guide hole, and each of the top holes is connected with a tube rod, which is inserted into the guide hole.

[0013] As a preferred technical solution, the cylinder body is provided with a groove above each top hole, and the groove is used to accommodate the pulling member.

[0014] As a preferred technical solution, each of the pulling members is provided with an elastic ring, which can abut against the bottom wall of the groove to block the top hole.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The pump body shell, gasket, cylinder body and valve plate are made of PA66+30% GF material, which is temperature resistant to 250℃ and suitable for use in high temperature environment;

[0017] The pump body is inside the matching range hood, and the pump is installed with the range hood by inserting the connector through the positioning hole on the pad, solving the problem of difficult installation.

[0018] When the pump body is assembled, the corresponding top holes and positioning holes drive the cylinder body and the valve plate to achieve a stable connection through the pulling pieces, which is not prone to brittleness. When the cylinder body and the valve plate are against each other, the elastic band is crimped to effectively improve the sealing performance and prevent oil smoke from entering the inside of the pump body. It has a long service life and is not easy to be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the pad of the utility model;

[0021] Figure 3 This is a schematic diagram of the cylinder structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the valve plate structure of the utility model;

[0023] Figure 5 This is a schematic diagram of the connection relationship between the cylinder body and the backing plate of the utility model;

[0024] In the figure: 10, pump body; 11, cylinder body; 111, top hole; 112, cylinder rod; 113, groove; 12, valve plate; 121, bottom hole; 122, embedded groove; 123, concave ring; 124, guide hole; 125, elastic band; 13, pad; 131, positioning hole; 132, side hole; 133, reinforcing rib; 14, pulling piece; 141, elastic ring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-5

[0027] Example 1

[0028] A foam pump is provided, comprising a pump body 10, wherein the pump body 10 has a cylinder body 11, a valve plate 12 and a gasket 13, and the cylinder body 11 and the valve plate 12 are pulled against each other through a connecting assembly;

[0029] The connecting assembly includes a plurality of bottom holes 121 disposed on the valve plate 12 , a plurality of top holes 111 disposed on the cylinder body 11 , and an embedding groove 122 disposed on the valve plate 12 .

[0030] An elastic band 125 is embedded in the embedding groove 122, and multiple bottom holes 121 are located on the outside of the embedding groove 122, and the bottom holes 121 correspond to the top holes 111 one by one, and are connected by a pulling member 14, and the pulling member 14 is preferably a screw. The elastic band 125 is connected end to end, and the elastic band 125 protrudes from the embedding groove 122 and can contact the bottom wall of the cylinder body 11.

[0031] The backing plate 13 is fixedly connected to the outer shell of the pump body 10. The backing plate 13 extends transversely and is provided with a positioning hole 131. The positioning hole 131 is used to insert a connecting piece. The connecting piece is preferably a bolt, etc., by which the pump body 10 can be fixed.

[0032] Example 2

[0033] A foam pump is provided, comprising a pump body 10, wherein the pump body 10 has a cylinder body 11, a valve plate 12 and a gasket 13, and the cylinder body 11 and the valve plate 12 are pulled against each other through a connecting assembly;

[0034] The connecting assembly includes a plurality of bottom holes 121 disposed on the valve plate 12 , a plurality of top holes 111 disposed on the cylinder body 11 , and an embedding groove 122 disposed on the valve plate 12 .

[0035] An elastic band 125 is embedded in the embedding groove 122, and multiple bottom holes 121 are located on the outside of the embedding groove 122, and the bottom holes 121 correspond to the top holes 111 one by one, and are connected by a pulling member 14, and the pulling member 14 is preferably a screw. The elastic band 125 is connected end to end, and the elastic band 125 protrudes from the embedding groove 122 and can contact the bottom wall of the cylinder body 11.

[0036] The backing plate 13 is fixedly connected to the outer shell of the pump body 10. The backing plate 13 extends transversely and is provided with a positioning hole 131. The positioning hole 131 is used to insert a connecting piece. The connecting piece is preferably a bolt, etc., by which the pump body 10 can be fixed.

[0037] The backing plate 13 is provided with a side hole 132 on one side of each positioning hole 131 . The side hole 132 is open, so that the connector can be inserted into the positioning hole 131 through the side hole 132 , which is convenient for operation.

[0038] A plurality of reinforcing ribs 133 are provided at the rear side of the pad 13 to increase the strength of the pad 13 and prevent it from deforming during installation.

[0039] Example 3

[0040] A foam pump is provided, comprising a pump body 10, wherein the pump body 10 has a cylinder body 11, a valve plate 12 and a gasket 13, and the cylinder body 11 and the valve plate 12 are pulled against each other through a connecting assembly;

[0041] The connecting assembly includes a plurality of bottom holes 121 disposed on the valve plate 12 , a plurality of top holes 111 disposed on the cylinder body 11 , and an embedding groove 122 disposed on the valve plate 12 .

[0042] An elastic band 125 is embedded in the embedding groove 122, and multiple bottom holes 121 are located on the outside of the embedding groove 122, and the bottom holes 121 correspond to the top holes 111 one by one, and are connected by a pulling member 14, and the pulling member 14 is preferably a screw. The elastic band 125 is connected end to end, and the elastic band 125 protrudes from the embedding groove 122 and can contact the bottom wall of the cylinder body 11.

[0043] The backing plate 13 is fixedly connected to the outer shell of the pump body 10. The backing plate 13 extends transversely and is provided with a positioning hole 131. The positioning hole 131 is used to insert a connecting piece. The connecting piece is preferably a bolt, etc., by which the pump body 10 can be fixed.

[0044] A guide hole 124 is provided on each bottom hole 121 , and a tube rod 112 is connected to each top hole 111 . The tube rod 112 is inserted into the guide hole 124 , so that when the pump body 10 is assembled, the tube rod 112 is inserted into the guide hole 124 to achieve preliminary positioning.

[0045] The embedding groove 122 has a plurality of concave circles 123 that are recessed toward the center of the valve plate 12. Each bottom hole 121 is distributed outside a concave circle 123 and is concentrically arranged with the concave circle 123, thereby improving the compactness of the structure of the pump body 10 and making the layout reasonable.

[0046] The cylinder body 11 is provided with a groove 113 above each top hole 111 , and the groove 113 is used to accommodate the pulling member 14 , that is, to prevent the pulling member 14 from protruding from the pump body 10 and being broken by collision.

[0047] An elastic ring 141 is disposed on each pulling member 14 . The elastic ring 141 can abut against the bottom wall of the groove 113 to block the top hole 111 , thereby improving the sealing performance of the pump body 10 .

[0048] Specific:

[0049] The existing foam pump shell is made of POM / POC material, which is resistant to temperatures of 80-100°C. The pump body 10 shell, gasket 13, cylinder body 11 and valve plate 12 of the present application are made of PA66+30% GF material, which is resistant to temperatures of 250°C and is suitable for use in high temperature environments.

[0050] The pump body 10 is installed in the matching range hood by inserting the connector into the positioning hole 131 on the pad 13 to solve the problem of difficult installation;

[0051] When the pump body 10 is assembled, the corresponding top hole 111 and the positioning hole 131 drive the cylinder body 11 and the valve plate 12 to achieve a stable connection through the pulling piece 14, and it is not easy to be brittle. When the cylinder body 11 and the valve plate 12 are against each other, the elastic band 125 is crimped, which effectively improves the sealing performance and prevents oil smoke from entering the interior of the pump body 10. It has a long service life and is not easy to be damaged.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A foam pump, characterized in that: The pump body (10) comprises a cylinder body (11), a valve plate (12) and a gasket (13), wherein the cylinder body (11) and the valve plate (12) are pulled against each other by a connecting assembly; The connection assembly comprises a plurality of bottom holes (121) arranged on the valve plate (12), a plurality of top holes (111) arranged on the cylinder body (11), and an embedding groove (122) arranged on the valve plate (12), wherein the embedding groove (122) is embedded with an elastic band (125), the plurality of bottom holes (121) are located outside the embedding groove (122), and the bottom holes (121) correspond to the top holes (111) one by one, and are connected via a pulling member (14); The backing plate (13) is fixedly connected to the outer shell of the pump body (10), the backing plate (13) extends transversely, and at least one positioning hole (131) is provided on the backing plate (13), and the positioning hole (131) is used to penetrate the connecting piece.

2. A foam pump according to claim 1, characterized in that: The pad (13) is provided with a side hole (132) on one side of each positioning hole (131), and the side hole (132) is in an open state.

3. A foam pump according to claim 1, characterized in that: The elastic band (125) is connected end to end, and the elastic band (125) protrudes from the embedding groove (122) and can contact the bottom wall of the cylinder body (11).

4. A foam pump according to claim 1, characterized in that: The embedding groove (122) has a plurality of concave circles (123) recessed toward the center of the valve plate (12), and each bottom hole (121) is distributed outside a concave circle (123) and is arranged concentrically with the concave circle (123).

5. A foam pump according to claim 1, characterized in that: A plurality of reinforcing ribs (133) are arranged on the rear side of the pad (13).

6. A foam pump according to claim 1, characterized in that: Each of the bottom holes (121) is provided with a guide hole (124), and each of the top holes (111) is connected with a tube rod (112), and the tube rod (112) is inserted into the guide hole (124).

7. A foam pump according to claim 1, characterized in that: The cylinder body (11) is provided with a groove (113) above each top hole (111), and the groove (113) is used to accommodate the pulling member (14).

8. A foam pump according to claim 1, characterized in that: Each pulling member (14) is provided with an elastic ring (141), and the elastic ring (141) can abut against the bottom wall of the groove (113) to block the top hole (111).

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