Foam spray gun with valve element convenient to replace

Abstract

The utility model relates to the technical field of cleaning equipment, and discloses a foam spray gun with a valve core convenient to replace, which comprises a valve body and a crossover coupling, an outer wall thread, an insertion hole and a threaded hole arranged on the bottom surface of the insertion hole are formed at one end of the valve body; a valve element is connected to the threaded hole in a threaded mode. The conversion joint comprises a quick male joint, a locking nut and a connector which is inserted into the locking nut in a sleeving manner; the locking nut is connected to the outer wall threads in a threaded mode, one end of the connector is inserted into the inserting hole in a sleeved mode, and the other end of the connector is connected with the quick male connector in a threaded mode. The quick male connector is integrated on the conversion connector, and the conversion connector can be conveniently disassembled and assembled in a labor-saving manner, so that the replacement work of the valve core is facilitated, and the replacement efficiency of the valve core is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cleaning equipment technical field, especially relate to a foam spray gun convenient for replacing valve core. BACKGROUND

[0002] Foam spray gun is a device for generating and spraying foam. CN 112024147 A discloses a foam generator, including a plastic kettle, the top of the plastic kettle is connected with a foam kettle nut, the top of the foam kettle nut is connected with a main body, the inner cavity of the main body is embedded with a nozzle I, the left end of the main body is connected with a 1 / 4 external plug. The existing foam spray gun is screwed on the valve body (i.e. the main body) by the quick male connector (i.e. the 1 / 4 external plug), and the valve core (i.e. the nozzle I) is located on the inside of the quick male connector. In order to improve the sealing performance, raw material tape or thread glue is generally wound on the threads of the quick male connector. When the valve core needs to be replaced, the worker needs to use a wrench and apply a large force to detach the quick male connector from the valve body, so that the valve core can be replaced. When reinstalling, the raw material tape or thread glue needs to be wound again, and the wrench needs to be used again to tighten it. The steps of replacing the valve core are very cumbersome and must be assisted by a tool. The valve core is difficult to replace, inconvenient and inefficient. SUMMARY

[0003] The utility model aims at providing a foam spray gun convenient for replacing valve core, by integrating the quick male connector on the conversion connector, and the conversion connector can be conveniently and labor-savingly detached and installed, so that the replacement of the valve core is facilitated, and the replacement efficiency of the valve core is improved.

[0004] The above technical purpose of the utility model is realized by the following technical scheme:

[0005] A foam spray gun convenient for replacing valve core, comprising a valve body and a conversion connector, one end of the valve body is formed with an outer wall thread, a jack and a threaded hole arranged on the bottom surface of the jack; a valve core is screwed on the threaded hole;

[0006] The conversion connector comprises a quick male connector, a locking nut and a connecting head sleeved on the locking nut; the locking nut is screwed on the outer wall thread, one end of the connecting head is sleeved in the jack, the other end of the connecting head is screwed with the quick male connector, and the connecting head and the quick male connector are connected by thread glue or raw material tape.

[0007] When the valve core needs to be replaced, the worker holds the locking nut and rotates the locking nut to detach the conversion connector from the valve body. At this time, the valve core is exposed in the jack, so that the valve core can be conveniently replaced. The locking nut can be locked or detached by hand, without the need for a tool, which is more convenient. The quick male connector is connected to the water pipe through the quick female connector.

[0008] The utility model further sets up: the one end of locking nut is formed with the inner flanging away from valve body,

[0009] The mouth of the jack is formed with a tapered hole;

[0010] The middle part of the connector is formed with a hemispherical part, the plane of the hemispherical part is attached to the inner flanging, and the arc outer wall of the hemispherical part is pressed against the tapered surface of the tapered hole;

[0011] The connector is formed with an inner wall thread at the extending end of the locking nut, and the quick male connector is screwed on the inner wall thread. The outer wall of the hemispherical part is attached to the tapered surface of the tapered hole, which can form a sealing band and improve the sealing performance between the connector and the valve body, thereby preventing water leakage.

[0012] The utility model further sets up: the one end of the connector away from the inner wall thread is formed with a hexagonal hole, and a hexagonal wrench is inserted into the hexagonal hole, which can facilitate the locking work of the connector and the quick male connector.

[0013] The utility model further sets up: the connector is formed with a clamping groove at the extending end of the locking nut, and a retaining ring is sleeved in the clamping groove. The retaining ring can limit the movement range of the connector in the locking nut, thereby preventing the connector of the disassembled adapter from being separated from the locking nut.

[0014] The utility model further sets up: the end of the connector inserted into the jack is sleeved with an O-ring, and the O-ring is attached to the inner wall of the jack. The O-ring can further improve the sealing performance between the connector and the valve body.

[0015] The utility model further sets up: the locking nut is covered in a plastic shell;

[0016] A plurality of circumferentially distributed grooves are formed on the outer wall of the plastic shell.

[0017] The plastic shell can increase the effective part for holding, increase the frictional resistance, and facilitate and save labor for disassembling or installing the locking nut.

[0018] The utility model has the following advantages:

[0019] Compared with the prior art, the quick male connector is integrated into the adapter, and the adapter can be conveniently and labor-savingly disassembled and installed, thereby facilitating the replacement of the valve core and improving the replacement efficiency of the valve core.

[0020] The contact sealing of the hemispherical part and the tapered hole and the sealing of the O-ring can be higher or maintain the sealing performance of the raw material band and the thread glue.

[0021] The plastic shell can further facilitate and save labor for rotating the locking nut. Attached Figure Description

[0022] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0023] Fig. 2 This is a schematic diagram of the structure of the adapter of this utility model;

[0024] Fig. 3 This is a schematic diagram of the valve body of this utility model.

[0025] Reference numerals: 10, valve body; 101, external thread; 102, insertion hole; 103, threaded hole; 104, tapered hole;

[0026] 1011. Left large diameter hole; 1012. Left medium diameter hole; 1013. Small diameter hole; 1014. Right medium diameter hole; 1015. Right large diameter hole;

[0027] 20. Adapter; 201. Quick-connect male; 202. Locking nut; 203. Connector; 204. Retaining ring; 205. O-ring; 206. Plastic housing; 2061. Groove;

[0028] 2021, Inward Flanging;

[0029] 2031, Hemispherical part; 2032, Hexagonal hole; 2033, Internal wall thread; 2034, Slot. Detailed Implementation

[0030] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0031] The following is for reference Figs. 1 to 3 The present invention will be described as follows:

[0032] A foam spray gun with a convenient valve core replacement includes a valve body 10 and a conversion connector 20. One end of the valve body 10 is formed with an outer wall thread 101, an insertion hole 102 and a threaded hole 103 provided on the bottom surface of the insertion hole 102; a valve core 30 is screwed onto the threaded hole 103.

[0033] The adapter 20 includes a quick-connect male connector 201, a locking nut 202, and a connector 203 inserted into the locking nut 202; the locking nut 202 is screwed onto the outer wall thread 101, one end of the connector 203 is inserted into the insertion hole 102, and the other end of the connector 203 is screwed onto the quick-connect male connector 201. The part where the connector and the quick-connect male connector are connected is provided with thread-locking adhesive or Teflon tape.

[0034] When the valve core needs to be replaced, the worker holds the locking nut, rotates the locking nut to detach the adapter from the valve body, at this time the valve core is exposed in the insertion hole, so the valve core can be conveniently replaced, and the locking nut can be locked or detached by hand without the aid of tools, which is more convenient. The male quick connector is connected to the water inlet pipe through the female quick connector.

[0035] The locking nut 202 of the embodiment is formed with an inverted edge 2021 at one end away from the valve body 10;

[0036] The mouth of the insertion hole 102 is formed with a tapered hole 104;

[0037] The middle part of the connector 203 is formed with a hemispherical part 2031, the plane of the hemispherical part 2031 abuts against the inverted edge 2021, and the arc-shaped outer wall of the hemispherical part 2031 abuts against the tapered surface of the tapered hole 104;

[0038] The connector 203 is formed with an inner wall thread 2033 at the protruding end of the locking nut 202, and the male quick connector 201 is screwed on the inner wall thread 2033. The outer wall of the hemispherical part abuts against the tapered surface of the tapered hole to form a sealing band, improving the sealing between the connector and the valve body, and preventing water leakage.

[0039] The connector 203 of the embodiment is formed with a hexagonal hole 2032 at one end away from the inner wall thread 2033, and a hexagonal wrench is inserted into the hexagonal hole to facilitate the locking work of the connector and the male quick connector.

[0040] The connector 203 of the embodiment is formed with a clamping groove 2034 at the protruding end of the locking nut 202, and a retaining ring 204 is sleeved in the clamping groove 2034. The movement range of the connector in the locking nut is limited by the retaining ring, preventing the connector of the detached adapter from being separated from the locking nut.

[0041] The end of the connector 203 of the embodiment is sleeved with an O-ring 205 into the insertion hole 102, and the O-ring 205 abuts against the inner wall of the insertion hole 102. The sealing between the connector and the valve body is further improved by the O-ring.

[0042] The locking nut 202 of the embodiment is covered in a plastic shell 206;

[0043] The outer wall of the plastic shell 206 is formed with a plurality of circumferentially distributed grooves 2061.

[0044] By providing a plastic shell, the effective part for holding can be increased, and the frictional resistance can be increased, making it more convenient and labor-saving to detach or install the locking nut.

[0045] The above merely is the preferred embodiment of the present application, it should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the present application, under the premise of, can also make a number of improvements and variations, the above assumptions these improvements and variations should also be considered as the protection scope of the present application.

Claims

1. A foam lance with easy replacement of the valve core, comprising a valve body (10) and a swivel (20), characterized in that: One end of the valve body (10) is formed with an outer wall thread (101), a socket (102) and a threaded hole (103) arranged on the bottom surface of the socket (102); the threaded hole (103) is screwed with a valve core (30); The conversion joint (20) comprises a male quick connector (201), a locking nut (202) and a connecting head (203) sleeved on the locking nut (202); the locking nut (202) is screwed on the outer wall thread (101), one end of the connecting head (203) is sleeved in the socket (102), and the other end of the connecting head (203) is screwed with the male quick connector (201).

2. A foam lance with a valve core that is easy to replace, according to claim 1, characterized in that: One end of the locking nut (202) away from the valve body (10) is formed with an inverted edge (2021); The mouth of the socket (102) is formed with a tapered hole (104); The middle part of the connecting head (203) is formed with a hemispherical part (2031), the plane of the hemispherical part (2031) abuts against the inverted edge (2021), and the arc-shaped outer wall of the hemispherical part (2031) abuts against the tapered surface of the tapered hole (104); The connecting head (203) is formed with an inner wall thread (2033) at the end extending through the locking nut (202), and the male quick connector (201) is screwed on the inner wall thread (2033).

3. A foam lance with a cartridge that is easy to replace according to claim 2, characterized in that: One end of the connecting head (203) away from the inner wall thread (2033) is formed with a hexagonal hole (2032).

4. A foam spray gun with a cartridge that is easy to replace, according to claim 2, characterized in that: The connecting head (203) is formed with a clamping groove (2034) at the end extending through the locking nut (202), and a check ring (204) is sleeved in the clamping groove (2034).

5. A foam spray gun with a cartridge that is easy to replace according to claim 2, characterized in that: The end of the connecting head (203) extending into the socket (102) is sleeved with an O-ring (205), and the O-ring (205) abuts against the inner wall of the socket (102).

6. A foam spray gun with a cartridge that is easy to replace, according to claim 1, characterized in that: The locking nut (202) is covered in a plastic shell (206); The outer wall of the plastic shell (206) is formed with a plurality of circumferentially distributed grooves (2061).

Images