Pump head, pump core with pump head, and palm-pressure building block pump tank with pump core

Abstract

The present application relates to the technical field of daily chemical products, and discloses a pump head, a pump core with the pump head, and a palm-pressure building block pump tank with the pump core, wherein the pump head includes a pump housing, a pumping assembly is arranged in the pump housing, and the pumping assembly includes: a pumping chamber located in the pump housing and unidirectionally connected to an external structure for containing materials, a piston body slidingly sealed with the inner peripheral wall of the pumping chamber, a pressure cover located outside the pumping chamber and driving the piston body to slide in the pumping chamber, and the feed inlet and the discharge port of the pumping chamber are arranged opposite to each other. The feed inlet and the discharge port of the pumping chamber of the present application are arranged opposite to each other, so that the material entering the pumping chamber from the feed inlet is convenient to be directly pumped out from the discharge port, so there is no need to wait for the material to fill the pumping chamber, thereby improving the pumping speed.

Description

Technical Field

[0001] The present application relates to the technical field of daily chemical products, and in particular to a pump head, a pump core having the pump head, and a palm-pressure building block pump tank having the pump core. Background Art

[0002] Products such as toothpaste, facial cleanser, and ointment are usually loaded and contained in soft packaging tubes. When they are needed, the tube body is squeezed to squeeze out the product in the tube. Therefore, when the product is about to run out, the process of taking it out is more laborious, and often the product in the tube cannot be used, resulting in waste.

[0003] In order to improve the problem of laborious product retrieval process and inability to use up all the products, some manufacturers choose to use pump-type packaging tubes to contain products, so as to use the negative pressure principle to pump out the products in the tubes. Compared with traditional packaging tubes, this type of pump-type packaging tube is conducive to improving the thoroughness of product retrieval and simplifying the product retrieval operation.

[0004] However, with respect to the above-mentioned pump packaging tube, the inventor believes that there is a defect in that the pump packaging tube on the market has a slow product extrusion speed when taking the product, especially when it is used for the first time, it needs to be pressed repeatedly for many times before the product can be pumped out. Summary of the invention

[0005] In order to improve the problem of slow extrusion speed of a pump-type packaging tube when taking a product, the present application provides a pump head, a pump core having the pump head, and a palm-pressure building block pump tank having the pump core.

[0006] In a first aspect, the present application provides a pump head.

[0007] A pump head includes a pump casing, in which a pumping assembly is arranged, and the pumping assembly includes: a pumping chamber located in the pump casing and unidirectionally connected to an external structure for containing materials, a piston body slidingly and sealingly matched with the inner peripheral wall of the pumping chamber, and a pressure cover located outside the pumping chamber and driving the piston body to slide in the pumping chamber, and the feed inlet and the discharge port of the pumping chamber are arranged opposite to each other.

[0008] By adopting the above technical solution, the feed port and the discharge port of the extraction chamber are arranged opposite to each other, which makes it convenient for the material entering the extraction chamber from the feed port and then being directly pumped out from the discharge port. Therefore, there is no need to wait for the material to fill the extraction chamber, thereby improving the pumping speed.

[0009] In some embodiments, a partition support is installed in the pump housing, and the partition support includes an outer cylinder and an inner cylinder that are connected to each other as a whole. The outer cylinder is fixed to the pump housing, and the inner cylinder is located in the cavity of the outer cylinder. The inner cavity of the inner cylinder forms the pumping chamber, and one end of the inner cylinder is reduced in diameter inward to form a one-way feed valve plate.

[0010] By adopting the above technical solution, a pumping chamber is formed, and it is beneficial to achieve one-way communication between the feed end of the pumping chamber and the external structure containing materials. The one-way communication here means that materials can only be fed from the external structure to the pumping chamber.

[0011] In some embodiments, the one-way feed valve plate is annular, and includes an annular deformation portion and an annular rigid portion, the rigid portion is located in the inner ring of the deformation portion, and the deformation portion is integrally formed with the inner cylinder.

[0012] By adopting the above technical solution, the one-way feed valve plate is integrally formed with the inner cylinder through its deformation portion, which facilitates the one-way feed valve plate to float after being stressed, thereby facilitating the one-way connection function in cooperation with the discharge port of the external structure.

[0013] In some embodiments, the piston body is sealingly slidably disposed in the inner cylinder cavity, and its sliding direction relative to the inner cylinder is located in the axial direction of the inner cylinder. The extraction chamber is the space between the one-way feed valve plate and the piston body. A discharge hole is penetrated on the piston body along its sliding direction relative to the inner cylinder. The discharge hole is arranged opposite to the inner hole of the rigid part, and a one-way discharge valve component is installed in the discharge hole.

[0014] By adopting the above technical scheme, the one-way feed valve plate and the one-way discharge valve member realize one-way feeding and discharging of the drawing chamber. Therefore, when the drawing chamber space is expanded after being compressed, negative pressure can be formed in the drawing chamber and material can be extracted from the external structure containing the material. Then, when the drawing chamber is compressed again, the material can be squeezed out from the discharge hole of the piston body.

[0015] In some embodiments, the one-way discharge valve component includes: a mounting portion installed in cooperation with the piston body, a valve plate arranged opposite to the mounting portion, and a plurality of deformable support arms connecting the mounting portion and the valve plate, the discharge hole is retracted inwardly near one end port of the one-way feed valve plate to form an abutment surface, and the valve plate is tightly fitted with the abutment surface when in a non-stressed state, and when the valve plate is tightly fitted with the abutment surface, the valve plate completely closes the discharge hole near one end port of the one-way feed valve plate.

[0016] By adopting the above technical solution, when the one-way discharge valve is in a non-stressed state, the valve plate can completely close the discharge hole close to one end port of the one-way feed valve plate, and when the valve plate is stressed, the deformable support arm can deform to make the valve plate break away from the abutment surface, thereby realizing the function of one-way discharge of materials from the discharge hole of the piston body.

[0017] In some embodiments, each of the deformable arms is composed of at least two arm sections, and at least two of the arm sections are not coaxial.

[0018] By adopting the above technical solution, the deformable support arm can be easily deformed after being subjected to force.

[0019] In some embodiments, the pressure cover is installed in cooperation with the piston body, and the pressure cover is penetrated by a discharge channel connected with the discharge hole.

[0020] By adopting the above technical solution, the material pumped out from the discharge hole can be easily pumped out from the discharge channel.

[0021] In some embodiments, an elastic member for providing restoring force to the gland and the piston body is further disposed in the pump housing.

[0022] By adopting the above technical solution, after applying force to the piston body to compress the extraction chamber, the external force on the piston body is released, and the piston body can return to its original position under the action of the elastic member, thereby increasing the space of the extraction chamber and forming a negative pressure in the extraction chamber.

[0023] In a second aspect, the present application provides a pump core.

[0024] A pump core comprises the above-mentioned pump head and a tank body sealed and connected to the pump head, a piston member is sealingly and slidingly arranged in the tank body, one end of the tank body is an air inlet, and the other end is a discharge port, the piston member is located between the air inlet and the discharge port, the discharge port and the piston member are used to fill materials, and the discharge port is provided with a blocking member which cooperates with the one-way feed valve sheet to realize one-way delivery of materials to the pumping chamber.

[0025] By adopting the above technical solution, the output of the material in the tank body also adopts the principle of negative pressure extrusion, that is, negative pressure is formed in the extraction chamber connected to the tank body to suck the material from the tank body, thereby forming a negative pressure in the tank body, and then the external atmospheric pressure pushes the piston to move, thereby realizing the pumping of the material from the tank body into the extraction chamber.

[0026] In some embodiments, the blocking member includes a blocking plate located in the opening area of ​​the discharge port, and a connecting arm connecting the blocking plate and the edge of the discharge port, and a passing gap is left between the blocking plate and the discharge port. After the tank body and the pump head are installed and connected, the blocking plate can be tightly fitted with the rigid part, and the blocking plate completely closes the inner hole of the rigid part. After the one-way feed valve plate is subjected to force, the deformation part can be deformed to make the rigid part break away from the conflict with the blocking plate.

[0027] By adopting the above technical scheme, the blocking member at the discharge port of the tank body cooperates with the one-way feed valve plate. The one-way feed valve plate can float after being subjected to force due to the arrangement of the deformation portion. After negative pressure is formed in the pumping chamber, suction will be formed toward the inner cavity of the pumping chamber. Therefore, the material in the tank body connected to the pumping chamber squeezes the one-way feed valve plate under the action of negative pressure suction, so that the deformation portion is deformed to enable the rigid portion to break away from the conflict with the blocking member, thereby allowing the material to enter the pumping chamber; and when the pumping chamber is compressed again, the one-way feed valve plate is squeezed by the material in the pumping chamber and fits tightly with the blocking member at the discharge port of the tank body, thereby allowing the material to be pumped out only from the discharge hole of the piston body.

[0028] In a third aspect, the present application provides a palm-pressure building block pump tank.

[0029] A palm-pressure building block pump tank comprises the above-mentioned pump core and an outer shell body mounted in cooperation with the pump core, wherein the pump core is located inside the outer shell body, and a pump cover is provided which is linearly slidably matched with the outer shell body, the pump cover is connected to the pressure cover, and the pump cover is provided with a pump-out channel connected to the material extraction chamber.

[0030] By adopting the above technical scheme, an assembled pump tank is provided, which can not only realize the rapid pumping out of materials, but also can manufacture an outer shell body and pump core separately according to design requirements to match the pump core, and the assembly form is similar to building blocks, thereby realizing the diversity of the pump tank appearance; in addition, the pump cover and the outer shell body are matched with linear sliding, so the linear force of palm pressure can realize the compression of the pumping chamber, so the operation is more labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the structure of the pump head provided for this application;

[0032] Figure 2 A schematic diagram of the explosion structure of the pump material assembly in the pump head provided in this application;

[0033] Figure 3 A cross-sectional view of a pump head provided for this application;

[0034] Figure 4 A cross-sectional view of a pump assembly in a pump head provided in the present application;

[0035] Figure 5 This is a schematic diagram of the structure of the one-way discharge valve in the pump head provided in this application;

[0036] Figure 6 A cross-sectional view of the piston and the one-way discharge valve in the pump head provided in the present application after installation;

[0037] Figure 7 A schematic diagram of the explosion structure of the pump core provided for this application;

[0038] Figure 8 A schematic diagram of the explosion structure of the tank in the pump core provided in this application;

[0039] Fig. 9 A cross-sectional view of the pump core provided for this application;

[0040] Fig.10 A cross-sectional view of the palm-pressure building block pump tank provided for this application.

[0041] In the figure, 1, pump housing; 2, pump assembly; 21, pumping chamber; 22, piston body; 221, discharge hole; 2211, abutment surface; 2212, mounting step; 3, gland; 31, discharge channel; 5, partition support; 51, outer cylinder; 52, inner cylinder; 6, one-way feed valve plate; 61, deformation part; 62, rigid part; 7, one-way discharge valve member; 71, mounting part; 72, valve plate; 73, deformation arm; 731, arm part; 8. Elastic part; 9. Tank body; 91. Piston part; 901. Air inlet; 902. Discharge port; 92. Blocking part; 921. Blocking sheet; 93. Connecting pipe section; 94. Labyrinth seal structure; 903. Connecting arm; 904. Feed gap; 10. Outer shell; 101. Card edge; 20. Pump cover; 201. Pump outlet channel; 30. Pump core; 301. Pump head; 9011. Grip; 9012. Air inlet; 9013. Pinch block. DETAILED DESCRIPTION

[0042] The following is combined with Figure 1-10 This application is described in further detail.

[0043] The present application embodiment discloses a pump head, such as Figure 1 As shown, it includes a pump housing 1, a pump material assembly 2 located in the pump housing 1, and a gland 3 passing through the pump housing 1 and cooperating with the pump material assembly 2. Figure 2 and Figure 3 As shown, the pump housing 1 is a cylindrical housing with one end open and the other end closed; the pump assembly 2 is mainly composed of a partition support 5 and a piston body 22 located in the partition support 5 and slidingly matched with the partition support 5. The partition support 5 includes an outer cylinder 51 and an inner cylinder 52 coaxially sleeved, and the inner cylinder 52 and the outer cylinder 51 are connected to each other at one end to form a whole, or the two are formed in one piece. In this embodiment of the present application, we define the partition support 5 as being vertically arranged in its axial direction, and the end at which the inner cylinder 52 and the outer cylinder 51 are connected to each other faces downward, such as Figure 3As shown, the top end of the outer cylinder 51 is engaged with the inner wall of the pump housing 1, and a gap is formed between the outer cylinder 51 and the inner wall of the pump housing 1; the inner peripheral wall of the inner cylinder 52 is slidingly sealed to cooperate with the piston body 22; and the sliding direction of the piston body 22 relative to the inner cylinder 52 is located in the axial direction of the inner cylinder 52; the bottom end of the inner cylinder 52 is reduced in diameter to form a one-way feed valve plate 6, the center of the one-way feed valve plate 6 is the feed hole, and the piston body 22 is penetrated with a discharge hole 221 along its sliding direction relative to the inner cylinder 52, and the discharge hole 221 and the feed hole The holes are arranged opposite to each other, a one-way discharge valve member 7 is installed in the discharge hole 221, and the space between the one-way feed valve plate 6 and the piston body 22 is the extraction chamber 21, and the one-way connection between the extraction chamber 21 and the outside is realized through the one-way feed valve plate 6 and the one-way discharge valve member 7; the pressure cover 3 passes through the closed end of the pump casing 1 to be connected and installed with the piston body 22, and the pressure cover 3 is penetrated by a discharge channel 31 connected with the discharge hole 221, and an elastic member 8 is also installed between the pressure cover 3 and the partition support 5, and the two ends of the elastic member 8 are respectively in contact with the pressure cover 3 and the partition support 5.

[0044] like Figure 4 As shown, the one-way feed valve plate 6 is annular, including an annular deformation portion 61 and an annular rigid portion 62. The deformation portion 61 has a wavy cross-section and has a certain elasticity. The rigid portion 62 is a hard part. The rigid portion 62 is located in the inner ring of the deformation portion 61, and the deformation portion 61 is located in the inner ring of the inner cylinder 52. The rigid portion 62, the deformation portion 61 and the inner cylinder 52 are integrally injection molded.

[0045] like Figure 5 As shown, the one-way discharge valve member 7 comprises: a mounting portion 71 mounted in cooperation with the piston body 22, a valve plate 72 arranged opposite to the mounting portion 71, and a plurality of deformable arms 73 connecting the mounting portion 71 and the valve plate 72. The mounting portion 71 is in a circular ring shape, and the valve plate 72 is in a circular pancake shape. The two are coaxially arranged, and a gap is formed between the two in the axial direction. The deformable arms 73 are circumferentially arrayed between the mounting portion 71 and the valve plate 72. Each deformable arm 73 is composed of at least two arm portions 731, and at least two arm portions 731 are not coaxial, so that the deformable arm 73 can be easily elastically deformed when subjected to force.

[0046] like Figure 5 and Figure 6As shown, the discharge hole 221 on the piston body 22 is retracted to form a mounting step 2212, and the inner diameter of one end of the discharge hole 221 away from the one-way feed valve disc 6 is larger than the inner diameter of the other end thereof. The one-way discharge valve member 7 is installed in the discharge hole 221, and is tightly matched with the mounting step 2212 through the mounting portion 71. The discharge hole 221 is retracted again at one end port close to the one-way feed valve disc 6 to form an abutment surface 2211. When the one-way discharge valve member 7 is installed in the discharge hole 221 until the mounting portion 71 is tightly matched with the mounting step 2212, when the valve disc 72 is in a non-stressed state, the valve disc 72 is tightly matched with the abutment surface 2211, and when the valve disc 72 is tightly matched with the abutment surface 2211, the valve disc 72 completely closes the discharge hole 221.

[0047] The present application also discloses a pump core, such as Figure 7 and Figure 8 As shown, it includes the pump head 301 and a tank body 9 sealed with the pump head 301, combined with Fig. 9 As shown, a piston member 91 is sealingly and slidingly arranged in the tank body 9, one end of the tank body 9 is an air inlet 901, and the other end is a discharge port 902, the piston member 91 is located between the air inlet 901 and the discharge port 902, the space between the discharge port 902 and the piston member 91 is used to fill materials, and a blocking member 92 is formed at the discharge port 902 for cooperating with the one-way feed valve plate 6 to realize one-way delivery of materials to the extraction chamber 21.

[0048] like Figure 7 and Fig. 9As shown, the blocking member 92 includes a blocking sheet 921 located in the opening area of ​​the discharge port 902, and a connecting arm 903 connecting the blocking sheet 921 and the edge of the discharge port 902. The blocking sheet 921 is located at the center of the discharge port 902, and a material passing gap 904 is left between the blocking sheet 921 and the discharge port 902. The connecting arms 903 are arranged in a circumferential array in the material passing gap 904. In addition, after the tank body 9 and the pump head 301 are installed and connected, the blocking sheet 921 can be tightly matched with the rigid part 62, and the blocking sheet 921 completely closes the inner hole of the rigid part 62. After the one-way feed valve sheet 6 is subjected to force, the deformable part 61 can be deformed to make the rigid part 62 break away from the conflict with the blocking sheet 921. Therefore, the blocking piece 92 at the discharge port 902 of the tank body 9 cooperates with the one-way feed valve plate 6. The one-way feed valve plate 6 can float after being subjected to force due to the setting of the deformation part 61. After negative pressure is formed in the pumping chamber 21, suction will be formed toward the inner cavity of the pumping chamber 21. Therefore, the material in the tank body 9 connected to the pumping chamber 21 squeezes the one-way feed valve plate 6 under the action of negative pressure suction, so that the deformation part 61 is deformed to make the rigid part 62 break away from the conflict with the blocking piece 921, thereby allowing the material to enter the pumping chamber 21; and when the pumping chamber 21 is compressed again, the one-way feed valve plate 6 is squeezed by the material in the pumping chamber 21 and fits tightly with the blocking piece 92 at the discharge port 902 of the tank body 9, so that the material can only be pumped out from the discharge hole 221 of the piston body 22.

[0049] In addition, if Fig. 9 As shown, an internal thread is formed on the inner wall of the pump casing 1 of the pump head 301, and the internal thread is located in the gap formed between the outer cylinder 51 and the pump casing 1; one end of the tank body 9 located at the discharge port 902 extends along its axis to form a connecting pipe section 93, and the outer wall of the connecting pipe section 93 is formed with an external thread that matches the above-mentioned internal thread, and the connecting pipe section 93 can be embedded in the gap formed between the outer cylinder 51 and the pump casing 1. Therefore, when connecting the pump head 301 and the tank body 9, align the connecting pipe section 93 with the gap position formed between the outer cylinder 51 and the pump casing 1 and then screw it in.

[0050] After the pump head 301 and the tank body 9 are connected, the bottom surface of the partition support 5 in the pump head 301 is fitted with the end surface of the discharge port 902 of the tank body 9. In order to better achieve a sealed connection between the pump head 301 and the tank body 9, a labyrinth sealing structure 94 is formed between the bottom surface of the partition support 5 and the end surface of the discharge port 902 of the tank body 9.

[0051] The present application also discloses a palm-pressure building block pump tank, such as Fig.10As shown, it includes the pump core 30 and the outer shell 10 installed in cooperation with the pump core 30. The outer shell 10 is a cylindrical structure with two ends through, and one end of the outer shell 10 is inwardly formed with a clamping edge 101. The outer shell 10 is sleeved on the outside of the pump core 30, and the clamping edge 101 is clamped between the pump head 301 and the tank body 9. Therefore, when installing the pump core 30 and the outer shell 10, first insert the pump head 301 into the outer shell 10 from one end of the outer shell 10 until the pump head 301 is tightly against the clamping edge, and then insert the tank body 9 from the other end of the outer shell 10, and screw the tank body 9 and the pump head 301 together, so that the clamping edge 101 is clamped between the pump head 301 and the tank body 9, so that the outer shell 10 and the pump core 30 are installed and fixed.

[0052] like Figures 8 to 10 As shown, in order to make it easier to rotate the tank body 9 during installation, a gripping portion 9011 is also embedded at one end of the air inlet 901 of the tank body 9, and an air inlet hole 9012 is provided on the gripping portion 9011. The gripping portion 9011 is circumferentially positioned and connected to the tank body 9, and a pinching block 9013 for easy pinching is provided on one end face of the gripping portion 9011 facing the outside of the tank body 9. Therefore, the tank body 9 can be rotated by pinching the pinching block 9013. In addition, the pump housing 1 and the outer housing 10 are also positioned and connected in the circumferential direction by means of an embedding method, and one end of the pump housing 1 away from the tank body 9 extends out of the outer housing 10, thereby ensuring that the pump head 301 remains fixed relative to the outer housing 10 when the tank body 9 is rotated. Therefore, it is only necessary to hold the outer housing 10, thereby making the installation process more convenient.

[0053] like Fig.10 As shown, a pump cover 20 is provided which is linearly slidably matched with the outer shell 10 in the axial direction of the outer shell 10 . The pump cover 20 is embedded and connected with the pressure cover 3 , and the pump cover 20 is provided with a pumping channel 201 which is connected with the pumping chamber 21 .

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pump core, characterized in that: It comprises a pump head and a tank body (9) sealedly connected to the pump head; The pump head comprises a pump housing (1), wherein a pump assembly (2) is arranged in the pump housing (1), wherein the pump assembly (2) comprises: a pumping chamber (21) located in the pump housing (1) and unidirectionally connected to an external structure for containing materials, a piston body (22) slidingly and sealingly matched with an inner peripheral wall of the pumping chamber (21), and a pressure cover (3) located outside the pumping chamber (21) and driving the piston body (22) to slide in the pumping chamber (21), wherein a feed inlet and a discharge outlet of the pumping chamber (21) are arranged opposite to each other; A partition support (5) is installed in the pump housing (1), and the partition support (5) comprises an outer cylinder (51) and an inner cylinder (52) which are connected to each other as a whole. The outer cylinder (51) is fixedly installed on the pump housing (1), and the inner cylinder (52) is located in the cavity of the outer cylinder (51). The inner cavity of the inner cylinder (52) forms the material extraction chamber (21). One end of the inner cylinder (52) is inwardly reduced in diameter to form a one-way feed valve plate (6); the one-way feed valve plate (6) is annular, and comprises an annular deformation portion (61) and an annular rigid portion (62). The rigid portion (62) is located inside the deformation portion (61), and the deformation portion (61) and the inner cylinder (52) are integrally formed. A piston member (91) is provided in a sealing and sliding manner in the tank body (9); one end of the tank body (9) is an air inlet (901) and the other end is a material outlet (902); the piston member (91) is located between the air inlet (901) and the material outlet (902); a space between the material outlet (902) and the piston member (91) is used for filling materials; the material outlet (902) is provided with a blocking member (92) which cooperates with the one-way feed valve plate (6) to realize one-way material delivery to the extraction chamber (21); The blocking member (92) comprises a blocking sheet (921) located in the opening area of ​​the discharge port (902), and a connecting arm (903) connecting the blocking sheet (921) and the edge of the discharge port (902); a material passing gap (904) is left between the blocking sheet (921) and the discharge port (902); after the tank body (9) and the pump head are installed and connected, the blocking sheet (921) can be tightly matched with the rigid part (62), and the blocking sheet (921) completely closes the inner hole of the rigid part (62); after the one-way feed valve sheet (6) is subjected to force, the deformable part (61) can be deformed so that the rigid part (62) is separated from the contact with the blocking sheet (921).

2. A pump core according to claim 1, characterized in that: The piston body (22) is sealingly slidably disposed in the cavity of the inner cylinder (52), and its sliding direction relative to the inner cylinder (52) is located in the axial direction of the inner cylinder (52). The extraction chamber (21) is the space between the one-way feed valve plate (6) and the piston body (22). A discharge hole (221) is formed on the piston body (22) along its sliding direction relative to the inner cylinder (52). The discharge hole (221) is arranged opposite to the inner hole of the rigid part (62), and a one-way discharge valve member (7) is installed in the discharge hole (221).

3. A pump core according to claim 2, characterized in that: The one-way discharge valve member (7) comprises: a mounting portion (71) mounted in cooperation with the piston body (22), a valve plate (72) arranged opposite to the mounting portion (71), and a plurality of deformable arms (73) connecting the mounting portion (71) and the valve plate (72); the discharge hole (221) is retracted inwardly near one end of the one-way feed valve plate (6) to form an abutment surface (2211); the valve plate (72) is tightly fitted with the abutment surface (2211) in a non-stressed state; when the valve plate (72) is tightly fitted with the abutment surface (2211), the valve plate (72) completely closes the discharge hole (221) near one end of the one-way feed valve plate (6).

4. A pump core according to claim 3, characterized in that: Each of the deformable support arms (73) is composed of at least two support arm portions (731), and at least two of the support arm portions (731) are not coaxial.

5. A pump core according to claim 3, characterized in that: The pressure cover (3) is mounted in cooperation with the piston body (22), and the pressure cover (3) is penetrated by a discharge channel (31) which is in communication with the discharge hole (221).

6. A pump core according to claim 1, characterized in that: An elastic member (8) is also provided in the pump housing (1) for providing restoring force to the gland (3) and the piston body (22).

7. A palm-pressure building block pump tank, characterized in that: The invention comprises a pump core as claimed in any one of claims 1 to 6, and an outer shell (10) mounted in cooperation with the pump core, wherein the pump core is located inside the outer shell (10), and a pump cover (20) is further provided which is linearly slidably matched with the outer shell (10), wherein the pump cover (20) is connected to the pressure cover (3), and the pump cover (20) is provided with a pumping channel (201) which is connected to the pumping chamber (21).

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